Erformed the experiments: TS AU. Analyzed the data: TS AU TN.

Erformed the experiments: TS AU. Analyzed the data: TS AU TN.

Erformed the experiments: TS AU. Analyzed the data: TS AU TN. Contributed reagents/materials/analysis tools: MH NA. Wrote the paper: TS TN.
Inflammation is known as a pivotal pathogenic mechanism of obesity-related disorders such as type 2 diabetes, 79983-71-4 chemical information metabolic syndrome, and atherosclerosis. Adipose tissue functions as a major endocrine organ by adipokine-mediated modulation of a number of signaling cascades in target tissues that exhibit pro-inflammatory or anti-inflammatory activity [1]. Therefore, targeting the molecular mechanism that leads to dysregulated production of adipokines may provide a novel therapeutic strategy for thetreatment of inflammation-related metabolic disorders and cardiovascular disease (CVD) [2]. Progranulin was first purified as a growth factor from conditioned tissue culture media [3] and is known to play a critical role in multiple physiologic and pathologic conditions, including cell growth, wound healing, tumorigenesis and neurodegenerative disease such as fronto-temporal dementia [4]. Recently, Tang el al. demonstrated that progranulin directly binds to tumor necrosis factor receptors (TNFR) and disturbs the TNF-a-TNFR interaction, suggesting its role as a physiologicalProgranulin and CTRP3 in Metabolic Syndromeantagonist of TNF-a signaling [5,6]. However, Matsubara et al. identified progranulin for the first time as a novel proinflammatory purchase 61177-45-5 adipokine by differential proteome analysis of cellular models of insulin resistance [7]. They showed that progranulin expression was induced by TNF-a or dexamethasone and decreased with differentiation of adipocytes [7]. Moreover, ablation of progranulin prevented mice from high fat diet-induced insulin resistance and blocked elevation of an inflammatory cytokine, interleukin-6 (IL-6), 10457188 in adipose tissue [7]. Previously, we have shown that serum progranulin concentrations are significantly higher in subjects with type 2 diabetes and positively correlated with macrophage infiltration in omental adipose tissue [8]. Taken together, progranulin may be an important modulator in a variety of inflammatory processes with specific effect on target tissues. Inflammation plays a crucial role in the pathophysiology of obesity-related disorders such as metabolic syndrome and atherosclerosis. However, to our knowledge, there have been no previous studies to examine circulating progranulin levels in subjects with metabolic syndrome and its relationship with carotid intima media thickness (CIMT), a useful surrogate marker for atherosclerosis. C1q/TNF-related protein-3 (CTRP3) is a novel adipokine that is a structural and functional adiponectin paralog [9]. Peterson et al. demonstrated that administration of recombinant CTRP3 to ob/ob mice significantly lowered blood glucose levels by activation of the Akt signaling pathway and suppression of gluconeogenic enzymes in the liver [10]. Furthermore, CTRP3 exhibited potent anti-inflammatory properties by inhibiting the binding of lipopolysaccharides (LPS) to toll-like receptor 4 (TLR4) [11] and reducing TNF-a and IL-6 secretion in monocytic cells [12]. Recently, we developed an enzyme-linked immunosorbent assay (ELISA) for CTRP3 and reported that CTRP3 concentrations were significantly higher in subjects with type 2 diabetes or prediabetes than subjects in a normal glucose tolerance group [13]. In the present study, we aimed to clarify the clinical significance of progranulin and CTRP-3 in the context of metabolic syndrome and atherosclerosis.Erformed the experiments: TS AU. Analyzed the data: TS AU TN. Contributed reagents/materials/analysis tools: MH NA. Wrote the paper: TS TN.
Inflammation is known as a pivotal pathogenic mechanism of obesity-related disorders such as type 2 diabetes, metabolic syndrome, and atherosclerosis. Adipose tissue functions as a major endocrine organ by adipokine-mediated modulation of a number of signaling cascades in target tissues that exhibit pro-inflammatory or anti-inflammatory activity [1]. Therefore, targeting the molecular mechanism that leads to dysregulated production of adipokines may provide a novel therapeutic strategy for thetreatment of inflammation-related metabolic disorders and cardiovascular disease (CVD) [2]. Progranulin was first purified as a growth factor from conditioned tissue culture media [3] and is known to play a critical role in multiple physiologic and pathologic conditions, including cell growth, wound healing, tumorigenesis and neurodegenerative disease such as fronto-temporal dementia [4]. Recently, Tang el al. demonstrated that progranulin directly binds to tumor necrosis factor receptors (TNFR) and disturbs the TNF-a-TNFR interaction, suggesting its role as a physiologicalProgranulin and CTRP3 in Metabolic Syndromeantagonist of TNF-a signaling [5,6]. However, Matsubara et al. identified progranulin for the first time as a novel proinflammatory adipokine by differential proteome analysis of cellular models of insulin resistance [7]. They showed that progranulin expression was induced by TNF-a or dexamethasone and decreased with differentiation of adipocytes [7]. Moreover, ablation of progranulin prevented mice from high fat diet-induced insulin resistance and blocked elevation of an inflammatory cytokine, interleukin-6 (IL-6), 10457188 in adipose tissue [7]. Previously, we have shown that serum progranulin concentrations are significantly higher in subjects with type 2 diabetes and positively correlated with macrophage infiltration in omental adipose tissue [8]. Taken together, progranulin may be an important modulator in a variety of inflammatory processes with specific effect on target tissues. Inflammation plays a crucial role in the pathophysiology of obesity-related disorders such as metabolic syndrome and atherosclerosis. However, to our knowledge, there have been no previous studies to examine circulating progranulin levels in subjects with metabolic syndrome and its relationship with carotid intima media thickness (CIMT), a useful surrogate marker for atherosclerosis. C1q/TNF-related protein-3 (CTRP3) is a novel adipokine that is a structural and functional adiponectin paralog [9]. Peterson et al. demonstrated that administration of recombinant CTRP3 to ob/ob mice significantly lowered blood glucose levels by activation of the Akt signaling pathway and suppression of gluconeogenic enzymes in the liver [10]. Furthermore, CTRP3 exhibited potent anti-inflammatory properties by inhibiting the binding of lipopolysaccharides (LPS) to toll-like receptor 4 (TLR4) [11] and reducing TNF-a and IL-6 secretion in monocytic cells [12]. Recently, we developed an enzyme-linked immunosorbent assay (ELISA) for CTRP3 and reported that CTRP3 concentrations were significantly higher in subjects with type 2 diabetes or prediabetes than subjects in a normal glucose tolerance group [13]. In the present study, we aimed to clarify the clinical significance of progranulin and CTRP-3 in the context of metabolic syndrome and atherosclerosis.

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