Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows

Background/Aims: Dairy cows with clinical ketosis display a negative energy balance and high blood concentrations of non-esterified fatty acids (NEFAs), the latter of which is an important pathological factor of ketosis in cows. The aims of this study were to investigate the inflammatory status of ketotic cows and to determine whether and through what underlying mechanism high levels of NEFAs induce an inflammatory response. Methods: Proinflammatory factors and the nuclear factor kappa B (NF-κB) signaling pathway were evaluated in neutrophils from clinical ketotic and control cows, using methods including western blotting, quantitative real-time polymerase chain reaction, and enzyme-linked immunosorbent assay. In vitro, the effects of NEFAs on the NF-κB signaling pathway in cow neutrophils were also evaluated using the above experimental techniques. Results: Ketotic cows displayed low blood concentrations of glucose and high blood NEFA and β-hydroxybutyrate concentrations. Importantly, Toll-like receptor 2 (TLR2) and TLR4 expression and IκBα and NF-κB p65 phosphorylation levels in neutrophils (PMNs) were significantly higher in ketotic cows than in control cows, indicating over-activation of the TLR2/4-induced NF-κB inflammatory pathway in PMNs in ketotic cows. The blood concentrations of the inflammatory cytokines interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α) were also significantly increased in ketotic cows. Interestingly, we found that NEFAs were positively correlated with proinflammatory cytokines. In vitro, after pharmacological inhibition of TLR2 and TLR4 expression in cow neutrophils, TLR2 and TLR4 expression was significantly decreased, and the phosphorylation level of NF-κB p65 was also reduced. Cow neutrophils were treated with different concentrations of NEFAs and pyrrolidine dithiocarbamate (PDTC; an NF-κB inhibitor). High concentrations of NEFAs (0.5 and 1 mM) significantly increased TLR2 and TLR4 expression, IκBα and NF-κB p65 phosphorylation levels, NF-κB p65 transcriptional activity, and IL-6, IL-1β, and TNF-α synthesis in cow neutrophils. The inhibition of NF-κB by PDTC suppressed the NEFA-induced synthesis of proinflammatory cytokines. Conclusions: High concentrations of NEFAs can over-activate the TLR2/4-mediated NF-κB signaling pathway to induce the over-production of proinflammatory cytokines, thereby increasing inflammation in cows with clinical ketosis. Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Yuming Zhang [verfasserIn] Xiaobing Li [verfasserIn] Haolong Zhang [verfasserIn] Zhibo Zhao [verfasserIn] Zhicheng Peng [verfasserIn] Zhe Wang [verfasserIn] Guowen Liu [verfasserIn] Xinwei Li [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2018

Schlagwörter:	Non-esterified fatty acids NF-κB signaling pathway Inflammation Neutrophils

Übergeordnetes Werk:	In: Cellular Physiology and Biochemistry - Cell Physiol Biochem Press GmbH & Co KG, 2002, 48(2018), 2, Seite 827-837
Übergeordnetes Werk:	volume:48 ; year:2018 ; number:2 ; pages:827-837

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.1159/000491913

Katalog-ID:	DOAJ038870967

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245	1	0	\|a Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows
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520			\|a Background/Aims: Dairy cows with clinical ketosis display a negative energy balance and high blood concentrations of non-esterified fatty acids (NEFAs), the latter of which is an important pathological factor of ketosis in cows. The aims of this study were to investigate the inflammatory status of ketotic cows and to determine whether and through what underlying mechanism high levels of NEFAs induce an inflammatory response. Methods: Proinflammatory factors and the nuclear factor kappa B (NF-κB) signaling pathway were evaluated in neutrophils from clinical ketotic and control cows, using methods including western blotting, quantitative real-time polymerase chain reaction, and enzyme-linked immunosorbent assay. In vitro, the effects of NEFAs on the NF-κB signaling pathway in cow neutrophils were also evaluated using the above experimental techniques. Results: Ketotic cows displayed low blood concentrations of glucose and high blood NEFA and β-hydroxybutyrate concentrations. Importantly, Toll-like receptor 2 (TLR2) and TLR4 expression and IκBα and NF-κB p65 phosphorylation levels in neutrophils (PMNs) were significantly higher in ketotic cows than in control cows, indicating over-activation of the TLR2/4-induced NF-κB inflammatory pathway in PMNs in ketotic cows. The blood concentrations of the inflammatory cytokines interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α) were also significantly increased in ketotic cows. Interestingly, we found that NEFAs were positively correlated with proinflammatory cytokines. In vitro, after pharmacological inhibition of TLR2 and TLR4 expression in cow neutrophils, TLR2 and TLR4 expression was significantly decreased, and the phosphorylation level of NF-κB p65 was also reduced. Cow neutrophils were treated with different concentrations of NEFAs and pyrrolidine dithiocarbamate (PDTC; an NF-κB inhibitor). High concentrations of NEFAs (0.5 and 1 mM) significantly increased TLR2 and TLR4 expression, IκBα and NF-κB p65 phosphorylation levels, NF-κB p65 transcriptional activity, and IL-6, IL-1β, and TNF-α synthesis in cow neutrophils. The inhibition of NF-κB by PDTC suppressed the NEFA-induced synthesis of proinflammatory cytokines. Conclusions: High concentrations of NEFAs can over-activate the TLR2/4-mediated NF-κB signaling pathway to induce the over-production of proinflammatory cytokines, thereby increasing inflammation in cows with clinical ketosis.
650		4	\|a Non-esterified fatty acids
650		4	\|a NF-κB signaling pathway
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700	0		\|a Zhe Wang \|e verfasserin \|4 aut
700	0		\|a Guowen Liu \|e verfasserin \|4 aut
700	0		\|a Xinwei Li \|e verfasserin \|4 aut
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allfields	10.1159/000491913 doi (DE-627)DOAJ038870967 (DE-599)DOAJ0c6cc8e78d734e4587e0a9a9e0962ade DE-627 ger DE-627 rakwb eng QP1-981 QD415-436 Yuming Zhang verfasserin aut Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background/Aims: Dairy cows with clinical ketosis display a negative energy balance and high blood concentrations of non-esterified fatty acids (NEFAs), the latter of which is an important pathological factor of ketosis in cows. The aims of this study were to investigate the inflammatory status of ketotic cows and to determine whether and through what underlying mechanism high levels of NEFAs induce an inflammatory response. Methods: Proinflammatory factors and the nuclear factor kappa B (NF-κB) signaling pathway were evaluated in neutrophils from clinical ketotic and control cows, using methods including western blotting, quantitative real-time polymerase chain reaction, and enzyme-linked immunosorbent assay. In vitro, the effects of NEFAs on the NF-κB signaling pathway in cow neutrophils were also evaluated using the above experimental techniques. Results: Ketotic cows displayed low blood concentrations of glucose and high blood NEFA and β-hydroxybutyrate concentrations. Importantly, Toll-like receptor 2 (TLR2) and TLR4 expression and IκBα and NF-κB p65 phosphorylation levels in neutrophils (PMNs) were significantly higher in ketotic cows than in control cows, indicating over-activation of the TLR2/4-induced NF-κB inflammatory pathway in PMNs in ketotic cows. The blood concentrations of the inflammatory cytokines interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α) were also significantly increased in ketotic cows. Interestingly, we found that NEFAs were positively correlated with proinflammatory cytokines. In vitro, after pharmacological inhibition of TLR2 and TLR4 expression in cow neutrophils, TLR2 and TLR4 expression was significantly decreased, and the phosphorylation level of NF-κB p65 was also reduced. Cow neutrophils were treated with different concentrations of NEFAs and pyrrolidine dithiocarbamate (PDTC; an NF-κB inhibitor). High concentrations of NEFAs (0.5 and 1 mM) significantly increased TLR2 and TLR4 expression, IκBα and NF-κB p65 phosphorylation levels, NF-κB p65 transcriptional activity, and IL-6, IL-1β, and TNF-α synthesis in cow neutrophils. The inhibition of NF-κB by PDTC suppressed the NEFA-induced synthesis of proinflammatory cytokines. Conclusions: High concentrations of NEFAs can over-activate the TLR2/4-mediated NF-κB signaling pathway to induce the over-production of proinflammatory cytokines, thereby increasing inflammation in cows with clinical ketosis. Non-esterified fatty acids NF-κB signaling pathway Inflammation Neutrophils Physiology Biochemistry Xiaobing Li verfasserin aut Haolong Zhang verfasserin aut Zhibo Zhao verfasserin aut Zhicheng Peng verfasserin aut Zhe Wang verfasserin aut Guowen Liu verfasserin aut Xinwei Li verfasserin aut In Cellular Physiology and Biochemistry Cell Physiol Biochem Press GmbH & Co KG, 2002 48(2018), 2, Seite 827-837 (DE-627)300189702 (DE-600)1482056-0 14219778 nnns volume:48 year:2018 number:2 pages:827-837 https://doi.org/10.1159/000491913 kostenfrei https://doaj.org/article/0c6cc8e78d734e4587e0a9a9e0962ade kostenfrei https://www.karger.com/Article/FullText/491913 kostenfrei https://doaj.org/toc/1015-8987 Journal toc kostenfrei https://doaj.org/toc/1421-9778 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_374 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2018 GBV_ILN_2153 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 48 2018 2 827-837
spelling	10.1159/000491913 doi (DE-627)DOAJ038870967 (DE-599)DOAJ0c6cc8e78d734e4587e0a9a9e0962ade DE-627 ger DE-627 rakwb eng QP1-981 QD415-436 Yuming Zhang verfasserin aut Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background/Aims: Dairy cows with clinical ketosis display a negative energy balance and high blood concentrations of non-esterified fatty acids (NEFAs), the latter of which is an important pathological factor of ketosis in cows. The aims of this study were to investigate the inflammatory status of ketotic cows and to determine whether and through what underlying mechanism high levels of NEFAs induce an inflammatory response. Methods: Proinflammatory factors and the nuclear factor kappa B (NF-κB) signaling pathway were evaluated in neutrophils from clinical ketotic and control cows, using methods including western blotting, quantitative real-time polymerase chain reaction, and enzyme-linked immunosorbent assay. In vitro, the effects of NEFAs on the NF-κB signaling pathway in cow neutrophils were also evaluated using the above experimental techniques. Results: Ketotic cows displayed low blood concentrations of glucose and high blood NEFA and β-hydroxybutyrate concentrations. Importantly, Toll-like receptor 2 (TLR2) and TLR4 expression and IκBα and NF-κB p65 phosphorylation levels in neutrophils (PMNs) were significantly higher in ketotic cows than in control cows, indicating over-activation of the TLR2/4-induced NF-κB inflammatory pathway in PMNs in ketotic cows. The blood concentrations of the inflammatory cytokines interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α) were also significantly increased in ketotic cows. Interestingly, we found that NEFAs were positively correlated with proinflammatory cytokines. In vitro, after pharmacological inhibition of TLR2 and TLR4 expression in cow neutrophils, TLR2 and TLR4 expression was significantly decreased, and the phosphorylation level of NF-κB p65 was also reduced. Cow neutrophils were treated with different concentrations of NEFAs and pyrrolidine dithiocarbamate (PDTC; an NF-κB inhibitor). High concentrations of NEFAs (0.5 and 1 mM) significantly increased TLR2 and TLR4 expression, IκBα and NF-κB p65 phosphorylation levels, NF-κB p65 transcriptional activity, and IL-6, IL-1β, and TNF-α synthesis in cow neutrophils. The inhibition of NF-κB by PDTC suppressed the NEFA-induced synthesis of proinflammatory cytokines. Conclusions: High concentrations of NEFAs can over-activate the TLR2/4-mediated NF-κB signaling pathway to induce the over-production of proinflammatory cytokines, thereby increasing inflammation in cows with clinical ketosis. Non-esterified fatty acids NF-κB signaling pathway Inflammation Neutrophils Physiology Biochemistry Xiaobing Li verfasserin aut Haolong Zhang verfasserin aut Zhibo Zhao verfasserin aut Zhicheng Peng verfasserin aut Zhe Wang verfasserin aut Guowen Liu verfasserin aut Xinwei Li verfasserin aut In Cellular Physiology and Biochemistry Cell Physiol Biochem Press GmbH & Co KG, 2002 48(2018), 2, Seite 827-837 (DE-627)300189702 (DE-600)1482056-0 14219778 nnns volume:48 year:2018 number:2 pages:827-837 https://doi.org/10.1159/000491913 kostenfrei https://doaj.org/article/0c6cc8e78d734e4587e0a9a9e0962ade kostenfrei https://www.karger.com/Article/FullText/491913 kostenfrei https://doaj.org/toc/1015-8987 Journal toc kostenfrei https://doaj.org/toc/1421-9778 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_374 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2018 GBV_ILN_2153 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 48 2018 2 827-837
allfields_unstemmed	10.1159/000491913 doi (DE-627)DOAJ038870967 (DE-599)DOAJ0c6cc8e78d734e4587e0a9a9e0962ade DE-627 ger DE-627 rakwb eng QP1-981 QD415-436 Yuming Zhang verfasserin aut Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background/Aims: Dairy cows with clinical ketosis display a negative energy balance and high blood concentrations of non-esterified fatty acids (NEFAs), the latter of which is an important pathological factor of ketosis in cows. The aims of this study were to investigate the inflammatory status of ketotic cows and to determine whether and through what underlying mechanism high levels of NEFAs induce an inflammatory response. Methods: Proinflammatory factors and the nuclear factor kappa B (NF-κB) signaling pathway were evaluated in neutrophils from clinical ketotic and control cows, using methods including western blotting, quantitative real-time polymerase chain reaction, and enzyme-linked immunosorbent assay. In vitro, the effects of NEFAs on the NF-κB signaling pathway in cow neutrophils were also evaluated using the above experimental techniques. Results: Ketotic cows displayed low blood concentrations of glucose and high blood NEFA and β-hydroxybutyrate concentrations. Importantly, Toll-like receptor 2 (TLR2) and TLR4 expression and IκBα and NF-κB p65 phosphorylation levels in neutrophils (PMNs) were significantly higher in ketotic cows than in control cows, indicating over-activation of the TLR2/4-induced NF-κB inflammatory pathway in PMNs in ketotic cows. The blood concentrations of the inflammatory cytokines interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α) were also significantly increased in ketotic cows. Interestingly, we found that NEFAs were positively correlated with proinflammatory cytokines. In vitro, after pharmacological inhibition of TLR2 and TLR4 expression in cow neutrophils, TLR2 and TLR4 expression was significantly decreased, and the phosphorylation level of NF-κB p65 was also reduced. Cow neutrophils were treated with different concentrations of NEFAs and pyrrolidine dithiocarbamate (PDTC; an NF-κB inhibitor). High concentrations of NEFAs (0.5 and 1 mM) significantly increased TLR2 and TLR4 expression, IκBα and NF-κB p65 phosphorylation levels, NF-κB p65 transcriptional activity, and IL-6, IL-1β, and TNF-α synthesis in cow neutrophils. The inhibition of NF-κB by PDTC suppressed the NEFA-induced synthesis of proinflammatory cytokines. Conclusions: High concentrations of NEFAs can over-activate the TLR2/4-mediated NF-κB signaling pathway to induce the over-production of proinflammatory cytokines, thereby increasing inflammation in cows with clinical ketosis. Non-esterified fatty acids NF-κB signaling pathway Inflammation Neutrophils Physiology Biochemistry Xiaobing Li verfasserin aut Haolong Zhang verfasserin aut Zhibo Zhao verfasserin aut Zhicheng Peng verfasserin aut Zhe Wang verfasserin aut Guowen Liu verfasserin aut Xinwei Li verfasserin aut In Cellular Physiology and Biochemistry Cell Physiol Biochem Press GmbH & Co KG, 2002 48(2018), 2, Seite 827-837 (DE-627)300189702 (DE-600)1482056-0 14219778 nnns volume:48 year:2018 number:2 pages:827-837 https://doi.org/10.1159/000491913 kostenfrei https://doaj.org/article/0c6cc8e78d734e4587e0a9a9e0962ade kostenfrei https://www.karger.com/Article/FullText/491913 kostenfrei https://doaj.org/toc/1015-8987 Journal toc kostenfrei https://doaj.org/toc/1421-9778 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_374 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2018 GBV_ILN_2153 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 48 2018 2 827-837
allfieldsGer	10.1159/000491913 doi (DE-627)DOAJ038870967 (DE-599)DOAJ0c6cc8e78d734e4587e0a9a9e0962ade DE-627 ger DE-627 rakwb eng QP1-981 QD415-436 Yuming Zhang verfasserin aut Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background/Aims: Dairy cows with clinical ketosis display a negative energy balance and high blood concentrations of non-esterified fatty acids (NEFAs), the latter of which is an important pathological factor of ketosis in cows. The aims of this study were to investigate the inflammatory status of ketotic cows and to determine whether and through what underlying mechanism high levels of NEFAs induce an inflammatory response. Methods: Proinflammatory factors and the nuclear factor kappa B (NF-κB) signaling pathway were evaluated in neutrophils from clinical ketotic and control cows, using methods including western blotting, quantitative real-time polymerase chain reaction, and enzyme-linked immunosorbent assay. In vitro, the effects of NEFAs on the NF-κB signaling pathway in cow neutrophils were also evaluated using the above experimental techniques. Results: Ketotic cows displayed low blood concentrations of glucose and high blood NEFA and β-hydroxybutyrate concentrations. Importantly, Toll-like receptor 2 (TLR2) and TLR4 expression and IκBα and NF-κB p65 phosphorylation levels in neutrophils (PMNs) were significantly higher in ketotic cows than in control cows, indicating over-activation of the TLR2/4-induced NF-κB inflammatory pathway in PMNs in ketotic cows. The blood concentrations of the inflammatory cytokines interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α) were also significantly increased in ketotic cows. Interestingly, we found that NEFAs were positively correlated with proinflammatory cytokines. In vitro, after pharmacological inhibition of TLR2 and TLR4 expression in cow neutrophils, TLR2 and TLR4 expression was significantly decreased, and the phosphorylation level of NF-κB p65 was also reduced. Cow neutrophils were treated with different concentrations of NEFAs and pyrrolidine dithiocarbamate (PDTC; an NF-κB inhibitor). High concentrations of NEFAs (0.5 and 1 mM) significantly increased TLR2 and TLR4 expression, IκBα and NF-κB p65 phosphorylation levels, NF-κB p65 transcriptional activity, and IL-6, IL-1β, and TNF-α synthesis in cow neutrophils. The inhibition of NF-κB by PDTC suppressed the NEFA-induced synthesis of proinflammatory cytokines. Conclusions: High concentrations of NEFAs can over-activate the TLR2/4-mediated NF-κB signaling pathway to induce the over-production of proinflammatory cytokines, thereby increasing inflammation in cows with clinical ketosis. Non-esterified fatty acids NF-κB signaling pathway Inflammation Neutrophils Physiology Biochemistry Xiaobing Li verfasserin aut Haolong Zhang verfasserin aut Zhibo Zhao verfasserin aut Zhicheng Peng verfasserin aut Zhe Wang verfasserin aut Guowen Liu verfasserin aut Xinwei Li verfasserin aut In Cellular Physiology and Biochemistry Cell Physiol Biochem Press GmbH & Co KG, 2002 48(2018), 2, Seite 827-837 (DE-627)300189702 (DE-600)1482056-0 14219778 nnns volume:48 year:2018 number:2 pages:827-837 https://doi.org/10.1159/000491913 kostenfrei https://doaj.org/article/0c6cc8e78d734e4587e0a9a9e0962ade kostenfrei https://www.karger.com/Article/FullText/491913 kostenfrei https://doaj.org/toc/1015-8987 Journal toc kostenfrei https://doaj.org/toc/1421-9778 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_374 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2018 GBV_ILN_2153 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 48 2018 2 827-837
allfieldsSound	10.1159/000491913 doi (DE-627)DOAJ038870967 (DE-599)DOAJ0c6cc8e78d734e4587e0a9a9e0962ade DE-627 ger DE-627 rakwb eng QP1-981 QD415-436 Yuming Zhang verfasserin aut Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background/Aims: Dairy cows with clinical ketosis display a negative energy balance and high blood concentrations of non-esterified fatty acids (NEFAs), the latter of which is an important pathological factor of ketosis in cows. The aims of this study were to investigate the inflammatory status of ketotic cows and to determine whether and through what underlying mechanism high levels of NEFAs induce an inflammatory response. Methods: Proinflammatory factors and the nuclear factor kappa B (NF-κB) signaling pathway were evaluated in neutrophils from clinical ketotic and control cows, using methods including western blotting, quantitative real-time polymerase chain reaction, and enzyme-linked immunosorbent assay. In vitro, the effects of NEFAs on the NF-κB signaling pathway in cow neutrophils were also evaluated using the above experimental techniques. Results: Ketotic cows displayed low blood concentrations of glucose and high blood NEFA and β-hydroxybutyrate concentrations. Importantly, Toll-like receptor 2 (TLR2) and TLR4 expression and IκBα and NF-κB p65 phosphorylation levels in neutrophils (PMNs) were significantly higher in ketotic cows than in control cows, indicating over-activation of the TLR2/4-induced NF-κB inflammatory pathway in PMNs in ketotic cows. The blood concentrations of the inflammatory cytokines interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α) were also significantly increased in ketotic cows. Interestingly, we found that NEFAs were positively correlated with proinflammatory cytokines. In vitro, after pharmacological inhibition of TLR2 and TLR4 expression in cow neutrophils, TLR2 and TLR4 expression was significantly decreased, and the phosphorylation level of NF-κB p65 was also reduced. Cow neutrophils were treated with different concentrations of NEFAs and pyrrolidine dithiocarbamate (PDTC; an NF-κB inhibitor). High concentrations of NEFAs (0.5 and 1 mM) significantly increased TLR2 and TLR4 expression, IκBα and NF-κB p65 phosphorylation levels, NF-κB p65 transcriptional activity, and IL-6, IL-1β, and TNF-α synthesis in cow neutrophils. The inhibition of NF-κB by PDTC suppressed the NEFA-induced synthesis of proinflammatory cytokines. Conclusions: High concentrations of NEFAs can over-activate the TLR2/4-mediated NF-κB signaling pathway to induce the over-production of proinflammatory cytokines, thereby increasing inflammation in cows with clinical ketosis. Non-esterified fatty acids NF-κB signaling pathway Inflammation Neutrophils Physiology Biochemistry Xiaobing Li verfasserin aut Haolong Zhang verfasserin aut Zhibo Zhao verfasserin aut Zhicheng Peng verfasserin aut Zhe Wang verfasserin aut Guowen Liu verfasserin aut Xinwei Li verfasserin aut In Cellular Physiology and Biochemistry Cell Physiol Biochem Press GmbH & Co KG, 2002 48(2018), 2, Seite 827-837 (DE-627)300189702 (DE-600)1482056-0 14219778 nnns volume:48 year:2018 number:2 pages:827-837 https://doi.org/10.1159/000491913 kostenfrei https://doaj.org/article/0c6cc8e78d734e4587e0a9a9e0962ade kostenfrei https://www.karger.com/Article/FullText/491913 kostenfrei https://doaj.org/toc/1015-8987 Journal toc kostenfrei https://doaj.org/toc/1421-9778 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_374 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_2018 GBV_ILN_2153 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 48 2018 2 827-837
language	English
source	In Cellular Physiology and Biochemistry 48(2018), 2, Seite 827-837 volume:48 year:2018 number:2 pages:827-837
sourceStr	In Cellular Physiology and Biochemistry 48(2018), 2, Seite 827-837 volume:48 year:2018 number:2 pages:827-837
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Non-esterified fatty acids NF-κB signaling pathway Inflammation Neutrophils Physiology Biochemistry
isfreeaccess_bool	true
container_title	Cellular Physiology and Biochemistry
authorswithroles_txt_mv	Yuming Zhang @@aut@@ Xiaobing Li @@aut@@ Haolong Zhang @@aut@@ Zhibo Zhao @@aut@@ Zhicheng Peng @@aut@@ Zhe Wang @@aut@@ Guowen Liu @@aut@@ Xinwei Li @@aut@@
publishDateDaySort_date	2018-01-01T00:00:00Z
hierarchy_top_id	300189702
id	DOAJ038870967
language_de	englisch
fullrecord	<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">DOAJ038870967</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230502133710.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">230227s2018 xx \|\|\|\|\|o 00\| \|\|eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1159/000491913</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)DOAJ038870967</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)DOAJ0c6cc8e78d734e4587e0a9a9e0962ade</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="050" ind1=" " ind2="0"><subfield code="a">QP1-981</subfield></datafield><datafield tag="050" ind1=" " ind2="0"><subfield code="a">QD415-436</subfield></datafield><datafield tag="100" ind1="0" ind2=" "><subfield code="a">Yuming Zhang</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2018</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Background/Aims: Dairy cows with clinical ketosis display a negative energy balance and high blood concentrations of non-esterified fatty acids (NEFAs), the latter of which is an important pathological factor of ketosis in cows. The aims of this study were to investigate the inflammatory status of ketotic cows and to determine whether and through what underlying mechanism high levels of NEFAs induce an inflammatory response. Methods: Proinflammatory factors and the nuclear factor kappa B (NF-κB) signaling pathway were evaluated in neutrophils from clinical ketotic and control cows, using methods including western blotting, quantitative real-time polymerase chain reaction, and enzyme-linked immunosorbent assay. In vitro, the effects of NEFAs on the NF-κB signaling pathway in cow neutrophils were also evaluated using the above experimental techniques. Results: Ketotic cows displayed low blood concentrations of glucose and high blood NEFA and β-hydroxybutyrate concentrations. Importantly, Toll-like receptor 2 (TLR2) and TLR4 expression and IκBα and NF-κB p65 phosphorylation levels in neutrophils (PMNs) were significantly higher in ketotic cows than in control cows, indicating over-activation of the TLR2/4-induced NF-κB inflammatory pathway in PMNs in ketotic cows. The blood concentrations of the inflammatory cytokines interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α) were also significantly increased in ketotic cows. Interestingly, we found that NEFAs were positively correlated with proinflammatory cytokines. In vitro, after pharmacological inhibition of TLR2 and TLR4 expression in cow neutrophils, TLR2 and TLR4 expression was significantly decreased, and the phosphorylation level of NF-κB p65 was also reduced. Cow neutrophils were treated with different concentrations of NEFAs and pyrrolidine dithiocarbamate (PDTC; an NF-κB inhibitor). High concentrations of NEFAs (0.5 and 1 mM) significantly increased TLR2 and TLR4 expression, IκBα and NF-κB p65 phosphorylation levels, NF-κB p65 transcriptional activity, and IL-6, IL-1β, and TNF-α synthesis in cow neutrophils. The inhibition of NF-κB by PDTC suppressed the NEFA-induced synthesis of proinflammatory cytokines. Conclusions: High concentrations of NEFAs can over-activate the TLR2/4-mediated NF-κB signaling pathway to induce the over-production of proinflammatory cytokines, thereby increasing inflammation in cows with clinical ketosis.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Non-esterified fatty acids</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">NF-κB signaling pathway</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Inflammation</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Neutrophils</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Physiology</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Biochemistry</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">Xiaobing Li</subfield><subfield code="e">verfasserin</subfield><subfield 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callnumber-first	Q - Science
author	Yuming Zhang
spellingShingle	Yuming Zhang misc QP1-981 misc QD415-436 misc Non-esterified fatty acids misc NF-κB signaling pathway misc Inflammation misc Neutrophils misc Physiology misc Biochemistry Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows
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topic_title	QP1-981 QD415-436 Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows Non-esterified fatty acids NF-κB signaling pathway Inflammation Neutrophils
topic	misc QP1-981 misc QD415-436 misc Non-esterified fatty acids misc NF-κB signaling pathway misc Inflammation misc Neutrophils misc Physiology misc Biochemistry
topic_unstemmed	misc QP1-981 misc QD415-436 misc Non-esterified fatty acids misc NF-κB signaling pathway misc Inflammation misc Neutrophils misc Physiology misc Biochemistry
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title	Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows
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title_full	Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows
author_sort	Yuming Zhang
journal	Cellular Physiology and Biochemistry
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author_browse	Yuming Zhang Xiaobing Li Haolong Zhang Zhibo Zhao Zhicheng Peng Zhe Wang Guowen Liu Xinwei Li
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class	QP1-981 QD415-436
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author-letter	Yuming Zhang
doi_str_mv	10.1159/000491913
author2-role	verfasserin
title_sort	non-esterified fatty acids over-activate the tlr2/4-nf-κb signaling pathway to increase inflammatory cytokine synthesis in neutrophils from ketotic cows
callnumber	QP1-981
title_auth	Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows
abstract	Background/Aims: Dairy cows with clinical ketosis display a negative energy balance and high blood concentrations of non-esterified fatty acids (NEFAs), the latter of which is an important pathological factor of ketosis in cows. The aims of this study were to investigate the inflammatory status of ketotic cows and to determine whether and through what underlying mechanism high levels of NEFAs induce an inflammatory response. Methods: Proinflammatory factors and the nuclear factor kappa B (NF-κB) signaling pathway were evaluated in neutrophils from clinical ketotic and control cows, using methods including western blotting, quantitative real-time polymerase chain reaction, and enzyme-linked immunosorbent assay. In vitro, the effects of NEFAs on the NF-κB signaling pathway in cow neutrophils were also evaluated using the above experimental techniques. Results: Ketotic cows displayed low blood concentrations of glucose and high blood NEFA and β-hydroxybutyrate concentrations. Importantly, Toll-like receptor 2 (TLR2) and TLR4 expression and IκBα and NF-κB p65 phosphorylation levels in neutrophils (PMNs) were significantly higher in ketotic cows than in control cows, indicating over-activation of the TLR2/4-induced NF-κB inflammatory pathway in PMNs in ketotic cows. The blood concentrations of the inflammatory cytokines interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α) were also significantly increased in ketotic cows. Interestingly, we found that NEFAs were positively correlated with proinflammatory cytokines. In vitro, after pharmacological inhibition of TLR2 and TLR4 expression in cow neutrophils, TLR2 and TLR4 expression was significantly decreased, and the phosphorylation level of NF-κB p65 was also reduced. Cow neutrophils were treated with different concentrations of NEFAs and pyrrolidine dithiocarbamate (PDTC; an NF-κB inhibitor). High concentrations of NEFAs (0.5 and 1 mM) significantly increased TLR2 and TLR4 expression, IκBα and NF-κB p65 phosphorylation levels, NF-κB p65 transcriptional activity, and IL-6, IL-1β, and TNF-α synthesis in cow neutrophils. The inhibition of NF-κB by PDTC suppressed the NEFA-induced synthesis of proinflammatory cytokines. Conclusions: High concentrations of NEFAs can over-activate the TLR2/4-mediated NF-κB signaling pathway to induce the over-production of proinflammatory cytokines, thereby increasing inflammation in cows with clinical ketosis.
abstractGer	Background/Aims: Dairy cows with clinical ketosis display a negative energy balance and high blood concentrations of non-esterified fatty acids (NEFAs), the latter of which is an important pathological factor of ketosis in cows. The aims of this study were to investigate the inflammatory status of ketotic cows and to determine whether and through what underlying mechanism high levels of NEFAs induce an inflammatory response. Methods: Proinflammatory factors and the nuclear factor kappa B (NF-κB) signaling pathway were evaluated in neutrophils from clinical ketotic and control cows, using methods including western blotting, quantitative real-time polymerase chain reaction, and enzyme-linked immunosorbent assay. In vitro, the effects of NEFAs on the NF-κB signaling pathway in cow neutrophils were also evaluated using the above experimental techniques. Results: Ketotic cows displayed low blood concentrations of glucose and high blood NEFA and β-hydroxybutyrate concentrations. Importantly, Toll-like receptor 2 (TLR2) and TLR4 expression and IκBα and NF-κB p65 phosphorylation levels in neutrophils (PMNs) were significantly higher in ketotic cows than in control cows, indicating over-activation of the TLR2/4-induced NF-κB inflammatory pathway in PMNs in ketotic cows. The blood concentrations of the inflammatory cytokines interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α) were also significantly increased in ketotic cows. Interestingly, we found that NEFAs were positively correlated with proinflammatory cytokines. In vitro, after pharmacological inhibition of TLR2 and TLR4 expression in cow neutrophils, TLR2 and TLR4 expression was significantly decreased, and the phosphorylation level of NF-κB p65 was also reduced. Cow neutrophils were treated with different concentrations of NEFAs and pyrrolidine dithiocarbamate (PDTC; an NF-κB inhibitor). High concentrations of NEFAs (0.5 and 1 mM) significantly increased TLR2 and TLR4 expression, IκBα and NF-κB p65 phosphorylation levels, NF-κB p65 transcriptional activity, and IL-6, IL-1β, and TNF-α synthesis in cow neutrophils. The inhibition of NF-κB by PDTC suppressed the NEFA-induced synthesis of proinflammatory cytokines. Conclusions: High concentrations of NEFAs can over-activate the TLR2/4-mediated NF-κB signaling pathway to induce the over-production of proinflammatory cytokines, thereby increasing inflammation in cows with clinical ketosis.
abstract_unstemmed	Background/Aims: Dairy cows with clinical ketosis display a negative energy balance and high blood concentrations of non-esterified fatty acids (NEFAs), the latter of which is an important pathological factor of ketosis in cows. The aims of this study were to investigate the inflammatory status of ketotic cows and to determine whether and through what underlying mechanism high levels of NEFAs induce an inflammatory response. Methods: Proinflammatory factors and the nuclear factor kappa B (NF-κB) signaling pathway were evaluated in neutrophils from clinical ketotic and control cows, using methods including western blotting, quantitative real-time polymerase chain reaction, and enzyme-linked immunosorbent assay. In vitro, the effects of NEFAs on the NF-κB signaling pathway in cow neutrophils were also evaluated using the above experimental techniques. Results: Ketotic cows displayed low blood concentrations of glucose and high blood NEFA and β-hydroxybutyrate concentrations. Importantly, Toll-like receptor 2 (TLR2) and TLR4 expression and IκBα and NF-κB p65 phosphorylation levels in neutrophils (PMNs) were significantly higher in ketotic cows than in control cows, indicating over-activation of the TLR2/4-induced NF-κB inflammatory pathway in PMNs in ketotic cows. The blood concentrations of the inflammatory cytokines interleukin-6 (IL-6), IL-1β, and tumor necrosis factor-α (TNF-α) were also significantly increased in ketotic cows. Interestingly, we found that NEFAs were positively correlated with proinflammatory cytokines. In vitro, after pharmacological inhibition of TLR2 and TLR4 expression in cow neutrophils, TLR2 and TLR4 expression was significantly decreased, and the phosphorylation level of NF-κB p65 was also reduced. Cow neutrophils were treated with different concentrations of NEFAs and pyrrolidine dithiocarbamate (PDTC; an NF-κB inhibitor). High concentrations of NEFAs (0.5 and 1 mM) significantly increased TLR2 and TLR4 expression, IκBα and NF-κB p65 phosphorylation levels, NF-κB p65 transcriptional activity, and IL-6, IL-1β, and TNF-α synthesis in cow neutrophils. The inhibition of NF-κB by PDTC suppressed the NEFA-induced synthesis of proinflammatory cytokines. Conclusions: High concentrations of NEFAs can over-activate the TLR2/4-mediated NF-κB signaling pathway to induce the over-production of proinflammatory cytokines, thereby increasing inflammation in cows with clinical ketosis.
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title_short	Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows
url	https://doi.org/10.1159/000491913 https://doaj.org/article/0c6cc8e78d734e4587e0a9a9e0962ade https://www.karger.com/Article/FullText/491913 https://doaj.org/toc/1015-8987 https://doaj.org/toc/1421-9778
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author2	Xiaobing Li Haolong Zhang Zhibo Zhao Zhicheng Peng Zhe Wang Guowen Liu Xinwei Li
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Non-Esterified Fatty Acids Over-Activate the TLR2/4-NF-Κb Signaling Pathway to Increase Inflammatory Cytokine Synthesis in Neutrophils from Ketotic Cows

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