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https://www.readbyqxmd.com/read/28822177/-berberine-regulates-type-2-diabetes-mellitus-related-with-insulin-resistance
#1
REVIEW
Cheng Li, Jin-Zhi He, Xue-Dong Zhou, Xin Xu
Insulin resistance (IR) is defined as a series of clinical manifestations for diminished effectiveness of insulin in lowering blood sugar levels caused by decreased sensitivity to insulin of liver, muscle and adipose tissue. IR is the major contributor to the etiology and pathogenesis of type 2 diabetes mellitus (T2DM). Berberine, a traditional Chinese herb extract, has been shown to be safe and effective in lowering blood sugar, alleviating insulin resistance and moderating type 2 diabetes mellitus and its complications...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28822083/alfalfa-derived-hsp70-administered-intranasally-improves-insulin-sensitivity-in-mice
#2
Michael Tytell, Ashley T Davis, Jareca Giles, Lauren C Snider, Ruoyu Xiao, Stephen G Dozier, Tennille D Presley, Kylie Kavanagh
Heat shock protein (HSP) 70 is an abundant cytosolic chaperone protein that is deficient in insulin-sensitive tissues in diabetes and unhealthy aging, and is considered a longevity target. It is also protective in neurological disease models. Using HSP70 purified from alfalfa and administered as an intranasal solution, we tested in whether the administration of Hsp70 to diet-induced diabetic mice would improve insulin sensitivity. Both the 10 and 40 μg given three times per week for 26 days significantly improved the response to insulin...
August 18, 2017: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/28819906/correlation-between-adrenal-function-growth-hormone-secretion-and-insulin-sensitivity-in-children-with-idiopathic-growth-hormone-deficiency
#3
A Ciresi, S Radellini, E Vigneri, V Guarnotta, J Bianco, M G Mineo, C Giordano
PURPOSE: Patients with growth hormone deficiency (GHD) demonstrate an increased cortisol/cortisone ratio which could potentially explain the metabolic features of GHD, while GH treatment (GHT) could increase the cortisol metabolism. METHODS: In 35 children (27 M, mean age 10.1 years) with idiopathic GHD at baseline and after 12 months of GHT and in 25 controls, in addition to metabolic parameters, we assessed adrenal function by morning serum cortisol, its peak, and its area under the curve (AUCCOR) during insulin tolerance test (ITT)...
August 18, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28819169/cd206-m2-like-macrophages-regulate-systemic-glucose-metabolism-by-inhibiting-proliferation-of-adipocyte-progenitors
#4
Allah Nawaz, Aminuddin Aminuddin, Tomonobu Kado, Akiko Takikawa, Seiji Yamamoto, Koichi Tsuneyama, Yoshiko Igarashi, Masashi Ikutani, Yasuhiro Nishida, Yoshinori Nagai, Kiyoshi Takatsu, Johji Imura, Masakiyo Sasahara, Yukiko Okazaki, Kohjiro Ueki, Tadashi Okamura, Kumpei Tokuyama, Akira Ando, Michihiro Matsumoto, Hisashi Mori, Takashi Nakagawa, Norihiko Kobayashi, Kumiko Saeki, Isao Usui, Shiho Fujisaka, Kazuyuki Tobe
Adipose tissue resident macrophages have important roles in the maintenance of tissue homeostasis and regulate insulin sensitivity for example by secreting pro-inflammatory or anti-inflammatory cytokines. Here, we show that M2-like macrophages in adipose tissue regulate systemic glucose homeostasis by inhibiting adipocyte progenitor proliferation via the CD206/TGFβ signaling pathway. We show that adipose tissue CD206(+) cells are primarily M2-like macrophages, and ablation of CD206(+) M2-like macrophages improves systemic insulin sensitivity, which was associated with an increased number of smaller adipocytes...
August 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28819133/combined-transcriptome-and-metabolome-analyses-of-metformin-effects-reveal-novel-links-between-metabolic-networks-in-steroidogenic-systems
#5
Sameer S Udhane, Balazs Legeza, Nesa Marti, Damian Hertig, Gaëlle Diserens, Jean-Marc Nuoffer, Peter Vermathen, Christa E Flück
Metformin is an antidiabetic drug, which inhibits mitochondrial respiratory-chain-complex I and thereby seems to affect the cellular metabolism in many ways. It is also used for the treatment of the polycystic ovary syndrome (PCOS), the most common endocrine disorder in women. In addition, metformin possesses antineoplastic properties. Although metformin promotes insulin-sensitivity and ameliorates reproductive abnormalities in PCOS, its exact mechanisms of action remain elusive. Therefore, we studied the transcriptome and the metabolome of metformin in human adrenal H295R cells...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28817801/a-sensitized-igf1-treatment-restores-corticospinal-axon-dependent-functions
#6
Yuanyuan Liu, Xuhua Wang, Wenlei Li, Qian Zhang, Yi Li, Zicong Zhang, Junjie Zhu, Bo Chen, Philip R Williams, Yiming Zhang, Bin Yu, Xiaosong Gu, Zhigang He
A major hurdle for functional recovery after both spinal cord injury and cortical stroke is the limited regrowth of the axons in the corticospinal tract (CST) that originate in the motor cortex and innervate the spinal cord. Despite recent advances in engaging the intrinsic mechanisms that control CST regrowth, it remains to be tested whether such methods can promote functional recovery in translatable settings. Here we show that post-lesional AAV-assisted co-expression of two soluble proteins, namely insulin-like growth factor 1 (IGF1) and osteopontin (OPN), in cortical neurons leads to robust CST regrowth and the recovery of CST-dependent behavioral performance after both T10 lateral spinal hemisection and a unilateral cortical stroke...
August 16, 2017: Neuron
https://www.readbyqxmd.com/read/28817230/recent-findings-on-fulminant-type-1-diabetes
#7
REVIEW
Lan Liu, Ling Zeng, Dan Sang, Zeyuan Lu, Jie Shen
Fulminant type 1 diabetes (fT1D) is a new subtype of type 1 diabetes proposed by Imagawa in 2000. It is a clinical syndrome characterized by a markedly rapid and almost complete destruction of pancreatic β cells. Metabolic derangement is more severe in this subtype than in autoimmune type 1 diabetes. The incidence of fT1D is associated with HLA DRB1*04:05DQB1*04:01, both innate and acquired immune disorders might contribute to the development of fT1D. The presence of specific innate immune responses to enterovirus infection connected with enhanced adoptive immune pathways responsible for aggressive β cell toxicity in fT1D...
August 17, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/28817063/changes-in-lipids-and-inflammatory-markers-after-consuming-diets-high-in-red-meat-or-dairy-for-four-weeks
#8
Kirsty M Turner, Jennifer B Keogh, Peter J Meikle, Peter M Clifton
There is a body of evidence linking inflammation, altered lipid metabolism, and insulin resistance. Our previous research found that insulin sensitivity decreased after a four-week diet high in dairy compared to a control diet and to one high in red meat. Our aim was to determine whether a relationship exists between changes in insulin sensitivity and inflammatory biomarkers, or with lipid species. Fasting Tumor Necrosis Factor alpha (TNF-α), Tumor Necrosis Factor Receptor II (sTNF-RII), C-reactive protein (CRP), and lipids were measured at the end of each diet...
August 17, 2017: Nutrients
https://www.readbyqxmd.com/read/28816105/thiazolidinedione-drugs-in-the-treatment-of-type-2-diabetes-mellitus-past-present-and-future
#9
Melissa A Davidson, Donald R Mattison, Laurent Azoulay, Daniel Krewski
Thiazolidinedione (TZD) drugs used in the treatment of type 2 diabetes mellitus (T2DM) have proven effective in improving insulin sensitivity, hyperglycemia, and lipid metabolism. Though well tolerated by some patients, their mechanism of action as ligands of peroxisome proliferator-activated receptors (PPARs) results in the activation of several pathways in addition to those responsible for glycemic control and lipid homeostasis. These pathways, which include those related to inflammation, bone formation, and cell proliferation, may lead to adverse health outcomes...
August 17, 2017: Critical Reviews in Toxicology
https://www.readbyqxmd.com/read/28814962/circulating-zinc-%C3%AE-2-glycoprotein-levels-are-low-in-newly-diagnosed-patients-with-metabolic-syndrome-and-correlate-with-adiponectin
#10
Lu Lei, Kejia Li, Ling Li, Xia Fang, Tingting Zhou, Cheng Zhang, Yong Luo, Hua Liu, Xiaoqiang Li, Hongting Zheng, Lin Zhang, Gangyi Yang, Lin Gao
BACKGROUND: Zinc-α2-glycoprotein (ZAG) is a novel adipokine that reduces insulin resistance, protecting against type 2 diabetes. However, past studies have been contradictory. This cross-sectional study aims to investigate the association of circulating ZAG with metabolic syndrome (MetS) in middle-aged and older Chinese adults. METHODS: Four hundred eighty nine individuals (234 healthy controls and 255 MetS patients) were examined. All individuals were screened for MetS according to the diagnostic guidelines of the United States National Cholesterol Education Program (NCEP) Expert Panel Adult Treatment Panel (ATP) III criteria...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28814745/suppression-of-grk2-expression-reduces-endothelial-dysfunction-by-restoring-glucose-homeostasis
#11
Kumiko Taguchi, Mari Hida, Mami Hasegawa, Haruka Narimatsu, Takayuki Matsumoto, Tsuneo Kobayashi
Despite the associations between diabetic complications and vascular endothelial dysfunction, a direct therapeutic method targeting endothelial dysfunction remains poorly characterized. We have previously shown that chemical inhibition of G-protein-coupled receptor kinase 2 (GRK2) slightly enhances insulin sensitivity and reduces endothelial dysfunction in type 2 diabetic mice. In this study, we identified GRK2 as a novel therapeutic target of diabetic endothelial dysfunction and investigated the effect on diabetic endothelial dysfunction through the systemic administration of GRK2 siRNA using a hydrodynamic-based procedure, resulting in suppression of increased GRK2 protein levels in the liver...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28814391/filling-the-void-a-role-for-exercise-induced-bdnf-and-brain-amyloid-precursor-protein-processing
#12
Rebecca Ek MacPherson
Inactivity, obesity, and insulin resistance are significant risk factors for the development of Alzheimer's disease (AD). Several studies have demonstrated that diet induced obesity, inactivity, and insulin resistance exacerbates neuropathological hallmarks of AD. The aggregation of beta-amyloid peptides is one of these hallmarks. Beta-site amyloid precursor protein cleaving enzyme 1 (BACE1) is the rate-limiting enzyme in amyloid precursor protein (APP) processing, leading to beta-amyloid peptide formation...
August 16, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28812576/docosahexaenoic-acid-enrichment-in-nafld-is-associated-with-improvements-in-hepatic-metabolism-and-hepatic-insulin-sensitivity-a-pilot-study
#13
L Hodson, L Bhatia, E Scorletti, D E Smith, N C Jackson, F Shojaee-Moradie, M Umpleby, P C Calder, C D Byrne
This corrects the article DOI: 10.1038/ejcn.2017.9.
August 16, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28812446/higher-dietary-intake-of-vitamin-d-may-influence-total-cholesterol-and-carbohydrate-profile-independent-of-body-composition-in-men-with-chronic-spinal-cord-injury
#14
Christopher Beal, Ashraf Gorgey, Pamela Moore, Nathan Wong, Robert A Adler, David Gater
STUDY DESIGN: A case-control design. OBJECTIVES: To determine the effects of dietary vitamin D intake on insulin sensitivity (Si), glucose effectiveness (Sg), and lipid profile in individuals with spinal cord injury (SCI). METHODS: 20 male, paraplegic (T3-L1) with chronic (> one year) motor complete SCI (AIS A or B) were recruited. Three-day dietary records were analyzed for dietary vitamin D (calciferol), and participants were assigned to one of two groups, a high vitamin D intake group and a low vitamin D intake group based on the mid-point of vitamin D frequency distribution...
August 16, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28812049/importance-of-adiponectin-activity-in-the-pathogenesis-of-alzheimer-s-disease
#15
REVIEW
Masaaki Waragai, Gilbert Ho, Yoshiki Takamatsu, Kazunari Sekiyama, Shuei Sugama, Takato Takenouchi, Eliezer Masliah, Makoto Hashimoto
A recent study suggested that insulin resistance may play a central role in the pathogenesis of Alzheimer's disease (AD). In this regard, it is of note that upregulation of plasma adiponectin (APN), a benign adipokine that sensitizes the insulin receptor signaling pathway and suppresses inflammation, has recently been associated with the severities of amyloid deposits and cognitive deficits in the elderly, suggesting that APN may enhance the risk of AD. These results are unanticipated because AD has been linked to type II diabetes and other metabolic disorders in which hypoadiponectinemia has been firmly established, and because APN ameliorated neuropathological features in a mouse model of neurodegeneration...
August 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/28811653/meal-timing-effects-on-insulin-sensitivity-and-intrahepatic-triglycerides-during-weight-loss
#16
R I Versteeg, M T Ackermans, A J Nederveen, E Fliers, M J Serlie, S E la Fleur
BACKGROUND: Several human and rodent studies suggest that in addition to the amount of energy consumed, timing of food intake contributes to body weight regulation. Consuming most energy in the morning has favorable effects on weight loss and weight maintenance. Whether this also affects glucose metabolism and liver fat independently from weight loss is unknown. OBJECTIVE: We hypothesized that during weight loss, consuming most energy in the morning improves insulin sensitivity and reduces hepatic fat content more than consuming most energy in the evening...
August 16, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28811651/inkt-cells-prevent-obesity-induced-hepatic-steatosis-in-mice-in-a-c-c-chemokine-receptor-7-dependent-manner
#17
H M Kim, R Lee, E S Lee, M H Kwon, J H Huh, B-E Kwon, E-K Park, S-Y Chang, M-N Kweon, P-H Kim, H-J Ko, C H Chung
Non-alcoholic fatty liver disease and non-alcoholic steatohepatitis are characterized by an increase in hepatic triglyceride content with infiltration of immune cells, which can cause steatohepatitis and hepatic insulin resistance. C-C chemokine receptor 7 (CCR7) is primarily expressed in immune cells, and CCR7 deficiency leads to the development of multi-organ autoimmunity, chronic renal disease, and autoimmune diabetes. Here, we investigated the effect of CCR7 on hepatic steatosis in a mouse model and its underlying mechanism...
August 16, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28811650/diet-induced-obesity-leads-to-metabolic-dysregulation-in-offspring-via-endoplasmic-reticulum-stress-in-a-sex-specific-manner
#18
J H Park, Y Yoo, M Cho, J Lim, A M Lindroth, Y J Park
BACKGROUND/OBJECTIVES: Exposure to metabolic stress has been suggested to influence the susceptibility to metabolic disorders in offspring according to epidemiological and animal studies. Nevertheless, molecular mechanisms remain unclear. We investigated impacts of diet-induced paternal obesity on metabolic phenotypes in offspring and its underlying molecular mechanism. SUBJECTS/METHODS: Male founder mice (F0), fed with control diet (CD) or high fat diet (HFD), were mated with CD-fed females...
August 16, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28811274/hypoxia-in-combination-with-muscle-contraction-improves-insulin-action-and-glucose-metabolism-in-human-skeletal-muscle-via-the-hif-1%C3%AE-pathway
#19
Sven W Görgens, Tim Benninghoff, Kristin Eckardt, Christian Springer, Alexandra Chadt, Anita Melior, Jakob Wefers, Andrea Cramer, Jørgen Jensen, Kåre I Birkeland, Christian A Drevon, Hadi Al-Hasani, Jürgen Eckel
Skeletal muscle insulin resistance is the hallmark of type 2 diabetes, and develops long before the onset of the disease. It is well accepted that physical activity improves glycemic control but the knowledge on underlying mechanisms mediating the beneficial effects remains incomplete. Exercise is accompanied by a decrease in intramuscular oxygen levels resulting in induction of HIF-1α. HIF-1α is a master regulator of gene expression and might play an important role in skeletal muscle function and metabolism...
August 15, 2017: Diabetes
https://www.readbyqxmd.com/read/28811203/bpn-a-marine-derived-ptp1b-inhibitor-activates-insulin-signaling-and-improves-insulin-resistance-in-c2c12-myotubes
#20
Qi Xu, Jiao Luo, Ning Wu, Renshuai Zhang, Dayong Shi
Insulin resistance is a key feature of type 2 diabetes mellitus (T2DM) and is characterized by defects in insulin signaling. Protein tyrosine phosphatase 1B (PTP1B) is a major negative regulator of insulin signaling cascade and has attracted intensive investigation in recent T2DM therapy study. BPN, a marine-derived bromophenol compound, was isolated from the red alga Rhodomela confervoides. This study investigated the effects of BPN on the insulin signaling pathway in insulin-resistant C2C12 myotubes by inhibiting PTP1B...
August 12, 2017: International Journal of Biological Macromolecules
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