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preadipocyte AND diabetes

G L, Yuwei Wang, Zhenhua Wang, Wenna Zhou, Na Hu, Gang Li, Honglun Wang
Fenugreek is a well-known annual herb widely used in both medicine and food. Four flavonoid glycosides have been separated from fenugreek seeds in our previous study. In this study, the effects of the four flavonoid glycosides on regulating glycolipid metabolism and improving mitochondrial function was investigated. Isoorientin showed a very significant activity among these flavonoid glycosides. Firstly, isoorientin decreased the accumulation of lipid droplets in 3T3-L1 preadipocytes by reducing the expression of adipokines including PPARγ, C/EBPα and FAS...
March 10, 2018: Journal of Agricultural and Food Chemistry
Cristina Salmerón
White adipose tissue (AT) is the main lipid storage depot in vertebrates. Initially considered to be a simple lipid store, AT has recently been recognized as playing a role as an endocrine organ that is implicated in processes such as energy homeostasis and as a rich source of stem cells. Interest in adipogenesis has increased not only because of the prevalence of obesity, metabolic syndrome and type 2 diabetes in humans, but also in aquaculture because of the excessive fat deposition experienced in some cultured fish species, which may compromise both their welfare and their final product quality...
March 7, 2018: Journal of Experimental Biology
Emil Andersen, Lars Roed Ingerslev, Odile Fabre, Ida Donkin, Ali Altıntaş, Soetkin Versteyhe, Thue Bisgaard, Viggo B Kristiansen, David Simar, Romain Barrès
BACKGROUND: Deterioration of the adipogenic potential of preadipocytes may contribute to adipose tissue dysfunction in obesity and type 2 diabetes (T2D). Here, we hypothesized that extracellular factors in obesity epigenetically reprogram adipogenesis potential and metabolic function of preadipocytes. METHODS: The transcriptomic profile of visceral adipose tissue preadipocytes collected from Lean, Obese and Obese with T2D was assessed throughout in vitro differentiation using RNA sequencing...
February 20, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Mengle Shao, Lavanya Vishvanath, Napoleon C Busbuso, Chelsea Hepler, Bo Shan, Ankit X Sharma, Shiuhwei Chen, Xinxin Yu, Yu A An, Yi Zhu, William L Holland, Rana K Gupta
Pathologic expansion of white adipose tissue (WAT) in obesity is characterized by adipocyte hypertrophy, inflammation, and fibrosis; however, factors triggering this maladaptive remodeling are largely unknown. Here, we test the hypothesis that the potential to recruit new adipocytes from Pdgfrβ+ preadipocytes determines visceral WAT health in obesity. We manipulate levels of Pparg, the master regulator of adipogenesis, in Pdgfrβ+ precursors of adult mice. Increasing the adipogenic capacity of Pdgfrβ+ precursors through Pparg overexpression results in healthy visceral WAT expansion in obesity and adiponectin-dependent improvements in glucose homeostasis...
March 1, 2018: Nature Communications
Muthukumaran Padmanaban, Thiyagarajan Gopal, Arun Babu Rajendran, Baddireddi Subhadra Lakshmi
Among several metabolic disorders, the pathogenesis of insulin resistance is considered to be multifactorial. Raffinose, an oligosaccharide isolated from the rhizome of Costus speciosus showed ≤50% inhibition of lipid accumulation in differentiated HepG2 and 3T3-L1 cells through exhibiting partial agonism to PPARγ, and, an enhanced secretion of adiponectin in 3T3-L1 adipocytes. Raffinose was also observed to attenuate the expression of SREBP1c, ACC and FAS which are involved in the fatty acid synthesis. A corresponding upregulation of PPARα and ACO involved in fatty acid oxidation was observed in steatotic HepG2 hepatocytes and 3T3-L1 adipocytes...
February 16, 2018: Chemico-biological Interactions
Shu-Fen Li, Cui-Song Zhu, Yu-Meng Wang, Xin-Xin Xie, Liu-Ling Xiao, Zhi-Chun Zhang, Qi-Qun Tang, Xi Li
Protein glycosylation is an important post-translational modification. Aberrant glycosylation has been implicated in many diseases because of associated changes in protein distribution and biological function. We showed that the expression of β1, 4-galactosyltransferase 5 (B4GalT5) was positively correlated with diabetes and obesity. In vivo, B4GalT5 knockdown in subcutaneous adipose tissue alleviated insulin resistance and adipose tissue inflammation, and increased adipogenesis in high-fat diet (HFD)-fed mice and ob/ob mice...
February 7, 2018: Cell Death & Disease
Yongmei Li, Jianying Du, Endong Zhu, Juanjuan Zhang, Jie Han, Wei Zhao, Bei Sun, Derun Tian
Liraglutide, as a glucagon-like peptide‑1 analogue, is used to treat type 2 diabetes mellitus and obesity. Previous findings have demonstrated the effects of liraglutide on adipogenesis; however, the underlying mechanism involved in this process remains to be elucidated. In the present study, to certify the effect of liraglutide on adipogenesis and explore the possible underlying mechanism involved in this process, preadipocyte 3T3‑L1 cells were cultured in adipocyte‑inducing medium and treated with liraglutide...
January 16, 2018: Molecular Medicine Reports
Sabbu Satish, Ankita Srivastava, Pragya Yadav, Salil Varshney, Rakhi Choudhary, Vishal M Balaramnavar, Tadigoppula Narender, Anil Nilkanth Gaikwad
Excess adiposity is a hallmark of obesity, which is caused due to an imbalance between energy intake and energy consumed. Obesity is often associated with several metabolic disorders like dyslipidemia, cardiovascular diseases and type 2 diabetes. Earlier, our group had reported natural product Aegeline (amino-alcohol) isolated from the plant Aegle marmelos as an anti-diabetic and anti-dyslipidemic compound. With this background, we synthesized a series of novel amino alcohol and thiazolidinedione hybrid molecules and studied their antiadipogenic activity...
January 1, 2018: European Journal of Medicinal Chemistry
Yit-Lai Chow, Yuko Iwata, Fumihiko Sato
Recently, more studies have aimed at identifying selective peroxisome proliferator-activated receptor gamma (PPARγ) modulators that transactivate the expression of PPARγ-dependent genes as partial agonists to improve diabetic symptoms with fewer side effects compared to classic PPARγ agonists such as thiazolidinediones. We found that dihydrosanguinarine (DHS) treatment induced preadipocyte differentiation and lipid droplet accumulation in 3T3-L1 cells, but this effect is weaker than that elicited by the full PPARγ agonist troglitazone...
October 31, 2017: ACS Omega
Atsuyoshi Nishina, Masaya Itagaki, Daisuke Sato, Hirokazu Kimura, Yasuaki Hirai, Nyunt Phay, Makoto Makishima
The increased number of patients with type 2 diabetes (T2D) has become a worldwide problem, and insulin sensitizers such as thiazolidinediones (TZDs) are used as therapeutic agents. We found that extracts of Vitex trifolia L. (V. trifolia), a medicinal plant from Myanmar, induced adipogenesis similar to rosiglitazone (ROS), which is a TZD, in 3T3-L1 preadipocytes. In the present study, we attempted to isolate from V. trifolia those compounds that showed ROS-like effects. Among the extracts of hexane, ethyl acetate, and methanol obtained from V...
November 22, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
P Ramlagan, P Rondeau, C Planesse, V S Neergheen-Bhujun, E Bourdon, T Bahorun
This study aimed at investigating and comparing the anti-diabetic potential of black and green teas. Biochemical analyses indicate higher antioxidant potency, significantly correlated with the phytochemicals present, in green teas compared to black teas. Both extracts afforded a similar level of protection to erythrocytes against peroxyl radical-induced lysis. Non-cytotoxic concentration of green and black tea extracts significantly reduced the reactive oxygen species (ROS) production (P < 0.01), lowered the oxidation of proteins (P < 0...
October 18, 2017: Food & Function
Xianwei Cui, Lianghui You, Lijun Zhu, Xing Wang, Yahui Zhou, Yun Li, Juan Wen, Yankai Xia, Xinru Wang, Chenbo Ji, Xirong Guo
PURPOSE: Childhood obesity increases susceptibility to type 2 diabetes (T2D) in adults. Circulating microRNAs (miRNAs) in serum have been proposed as potential diagnostic biomarkers, and they may contribute to the progression toward T2D. Here, we investigated the possibility of predicting the future risk of adult T2D in obese children by using circulating miRNAs. BASIC PROCEDURES: We performed miRNA high-throughput sequencing to screen relevant circulating miRNAs in obese children...
September 28, 2017: Metabolism: Clinical and Experimental
Helena H Chowdhury, Jelena Velebit, Igor B Mekjavic, Ola Eiken, Marko Kreft, Robert Zorec
Dipeptidyl peptidase 4 (DPP4) is a transmembrane glycoprotein involved in protein degradation. Due to its action on incretins, which increase insulin secretion, DPP4 is considered a therapeutic target for type 2 diabetes. Here we have studied the role of single and combined effects of hypoxia and inactivity on the expression of DPP4 in human adipose tissue of 12 adult normal-weight males. Fat biopsies were obtained at baseline and after each of three experimental campaigns. The results revealed that in isolated human preadipocytes the expression of DPP4 was significantly increased by exposure of participants to hypoxia...
September 26, 2017: Experimental and Clinical Endocrinology & Diabetes
Sugathan Subi, Sungjin Lee, Supriya Shiwani, Naresh Kumar Singh
Objective: Myogenic satellite cells were isolated from semitendinosus muscle of prepubertal Korean black goat to observe the differential effect of linolenic and retinoic acid in thepresence of thiazolidinediones and also to observe the production insulin sensitive preadipocyte. Methods: Cells were characterized for its stemness with CD 34, CD 13, CD 106, CD44, Vimentin surface markers using flow cytometry. Cells characterized themselves to possess significant (p<0...
September 18, 2017: Asian-Australasian Journal of Animal Sciences
Yu-Feng Zhou, Zi-Yi Fu, Xiao-Hui Chen, Yan Cui, Chen-Bo Ji, Xi-Rong Guo
Obesity is a confirmed risk factor for hyperlipidemia, type‑II diabetes, hypertension, and cardiovascular disease. MicroRNAs (miRs) have emerged as an important field of study within energy metabolism and obesity. A previous study demonstrated miR‑1275 to be markedly down‑regulated during maturation of human preadipocytes. It has been reported that miR‑1275 dysregulates expression in several types of cancer and infections. Little is currently known about the regulation of miR‑1275 transcription. The aim of the current study was to explore the mechanism underlying the expression of miR‑1275 in mature human adipocytes...
November 2017: Molecular Medicine Reports
Kristiaan Wouters, Yann Deleye, Sarah A Hannou, Jonathan Vanhoutte, Xavier Maréchal, Augustin Coisne, Madjid Tagzirt, Bruno Derudas, Emmanuel Bouchaert, Christian Duhem, Emmanuelle Vallez, Casper G Schalkwijk, François Pattou, David Montaigne, Bart Staels, Réjane Paumelle
The genomic CDKN2A/B locus, encoding p16(INK4a) among others, is linked to an increased risk for cardiovascular disease and type 2 diabetes. Obesity is a risk factor for both cardiovascular disease and type 2 diabetes. p16(INK4a) is a cell cycle regulator and tumour suppressor. Whether it plays a role in adipose tissue formation is unknown. p16(INK4a) knock-down in 3T3/L1 preadipocytes or p16(INK4a) deficiency in mouse embryonic fibroblasts enhanced adipogenesis, suggesting a role for p16(INK4a) in adipose tissue formation...
November 2017: Diabetes & Vascular Disease Research
Joanna Góralska, Agnieszka Śliwa, Anna Gruca, Urszula Raźny, Monika Chojnacka, Anna Polus, Bogdan Solnica, Małgorzata Malczewska-Malec
Glucagon-like peptide 1 receptor agonists (GLP-1RAs) are relatively new pharmacological agents used to normalize glucose level in type 2 diabetes. Recently, GLP-1RAs have been approved for the treatment of obesity to reduce body weight in non-diabetic patients. The extra-pancre-atic effects of GLP-1RAs, as well as their molecular mechanism of action, are still poorly understood. Thus this study was aimed to verify the hypothesis that the mechanism of action of the GLP-1RAs involves mitochondria and that GLP-1RAs administration can improve mitochondrial functions...
2017: Acta Biochimica Polonica
Tania Paul, Kishori G Apte, Pradeep B Parab, Biswadeep Das
BACKGROUND: Adiantum philippense (AP) is a pteridophyte that shows antihyperglycemic activity in vivo diabetic model, but the mechanism of action is unknown. OBJECTIVE: AP was found to play a pivotal role in minimizing the high blood glucose in alloxan-induced diabetic rats. Simultaneously, it was observed that it could maintain the normal lipid profile even in diabetic condition. To investigate its insulin-like activity along with its inhibitory role on adipocyte differentiation became the objective of our present study...
July 2017: Pharmacognosy Magazine
Junna Yamaguchi, Tetsuhiro Tanaka, Hisako Saito, Seitaro Nomura, Hiroyuki Aburatani, Hironori Waki, Takashi Kadowaki, Masaomi Nangaku
Obesity is a risk factor for many diseases including diabetes, cancer, cardiovascular disease, and chronic kidney disease. Obesity is characterized by the expansion of white adipose tissue (WAT). Hypertrophy and hyperplasia of adipocytes cause tissue hypoxia followed by inflammation and fibrosis. Its trigger, preadipocyte differentiation into mature adipocytes, is finely regulated by transcription factors, signal molecules, and cofactors. We found that echinomycin, a potent HIF-1 inhibitor, completely inhibited adipogenesis in 3T3-L1 WAT preadipocytes by affecting the early phase of mitotic clonal expansion...
July 26, 2017: Scientific Reports
Xia Guo, Feifei Li, Zaiyan Xu, Amelia Yin, Hang Yin, Chenxiao Li, Shi-You Chen
Obesity is the major risk factor for type 2 diabetes, cardiovascular disorders, and many other diseases. Adipose tissue inflammation is frequently associated with obesity and contributes to the morbidity and mortality. Dedicator of cytokinesis 2 (DOCK2) is involved in several inflammatory diseases, but its role in obesity remains unknown. To explore the function of DOCK2 in obesity and insulin resistance, WT and DOCK2-deficient (DOCK2(-/-)) mice were given chow or high-fat diet (HFD) for 12 weeks followed by metabolic, biochemical, and histologic analyses...
September 2017: Journal of Lipid Research
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