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Endocrinology and Diabetology Unit, Diabetology and Metabolic Disease Unit, Endocrinology Unit, Unit of Human Pathology, Surgical Department, Department of Clinical Sciences and Community Health, University of Milan, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Pad.Granelli, Via F. Sforza, 35, 20122 Milan, Italy
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suggested (8) , evidence indicates that the activation of CREB is mainly modulated by cAMP-dependent protein kinase A (PKA) (9) . PKA is a tetrameric enzyme composed of two catalytic and two regulatory subunits. There are four regulatory subunits (R1A, R1B
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protein kinase A (p-PKA) and phosphorylated versions of cAMP response element-binding protein (p-CREB) were purchased from Cell Signaling Technology. The antibodies against NIS were purchased from Proteintech (Chicago, IL, USA). Reverse transcription
Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China
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Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China
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Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China
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National Center of Technology Innovation for Dairy Industry, Hohhot, PR China
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Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China
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Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China
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Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China
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crucial intracellular second messenger that interacts with the regulatory subunits of cAMP-dependent protein kinase (PKA), leading to the activation of PKA activity. Subsequently, it regulates downstream target gene transcription or protein phosphorylation
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cAMP/PKA signaling inhibits the secretion of progesterone via PKA ( 50 ) and the transcription of beta-hCG via CREB ( 49 ). The activated EP3/G i1 can stimulate p-ERK1/2 and p53, which eventually enhance PAI-1 gene transcription ( 52 ). These changes
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of neuroendocrine characteristics via two main mechanisms ( Fig. 10 ), namely a classical pathway that involves the release of the catalytic subunits of PKA and an alternative pathway that promotes the activation of the EPAC pathway ( 13 , 14 , 26
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histopathology showing the absence of fasciculata or reticularis cells together with disorganisation of zona granulosa (ZG) cells ( 16 ). Recent data in mouse models show that PKA signalling overactivation drives the differentiation of a reticularis-like zone in
DFBMC, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
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DFBMC, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
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been implicated in CRHR functions, including ERK1/2 and p38 MAPKs, PKA, Akt, NFkB, GSK-3b/Wnt, RhoA as well as other important signaling molecules such as cAMP, calcium, IP3 and nitric oxide/cGMP ( 10 ). Here, we review the principal characteristics
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Maebashi Hirosegawa Clinic, Maebashi, Gunma, Japan
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-dependent protein kinase (PKA) ( 38 ). PKA has been shown to directly activate LKB1 ( 39 ); hence, PKA may potentially play a role upstream of the LKB1/AMPK pathway in nesfatin-1 receptor signaling in VECs (the proposed signaling pathway is presented in
Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
Danish Diabetes Academy, Odense University Hospital, Odense, Denmark
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Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
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Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
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Department of Biomedicine, Aarhus University, Aarhus, Denmark
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Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
Danish Diabetes Academy, Odense University Hospital, Odense, Denmark
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TGX Stain-Free Precast Gels (Bio-Rad). Levels of GLUT4, phosphorylation of HSL and PKA phosphorylation of PLIN1 were analyzed. Phosphorylation of HSL is expressed as a ratio of total HSL level. The total protein load that was confirmed by statistical
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has been shown to affect the signalling pathway mediated by the cAMP-dependent protein kinase (PKA) activation and cAMP-responsive element-binding protein (CREB) phosphorylation in different cell types ( 12 , 27 ). In hepatocytes, biguanides suppress