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adipocyte differentiation

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https://www.readbyqxmd.com/read/28645103/colxv-promotes-adipocyte-differentiation-via-inhibiting-dna-methylation-and-camp-pka-pathway-in-mice
#1
Guannv Liu, Meihang Li, Yatao Xu, Song Wu, Muhammad Saeed, Chao Sun
Extracellular matrix (ECM), as an essential component of adipose tissue, not only provides mechanical support for adipocyte growth, but also participates in ECM-adipocyte communication via various secreted proteins, including highly enriched collagens. Collagen XV (ColXV) is a secreted non-fibrillar collagen within ECM Basement Membrane (BM) zones and well recognized as a tumor suppressor. However, the role of ColXV in adipose tissue is still unknown. In this study, high fat diet (HFD) fed mice were used as obese model, in which we deeply investigated the interaction between ColXV and adipocyte differentiation or adipose metabolism...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28642596/sgbs-cells-as-a-model-of-human-adipocyte-browning-a-comprehensive-comparative-study-with-primary-human-white-subcutaneous-adipocytes
#2
Chia Rou Yeo, Madhur Agrawal, Shawn Hoon, Asim Shabbir, Manu Kunaal Shrivastava, Shiqi Huang, Chin Meng Khoo, Vanna Chhay, M Shabeer Yassin, E Shyong Tai, Antonio Vidal-Puig, Sue-Anne Toh
The Simpson Golabi Behmel Syndrome (SGBS) pre-adipocyte cell strain is widely considered to be a representative in vitro model of human white pre-adipocytes. A recent study suggested that SGBS adipocytes exhibit an unexpected transient brown phenotype. Here, we comprehensively examined key differences between SGBS adipocytes and primary human white subcutaneous (PHWSC) adipocytes. RNA-Seq analysis revealed that extracellular matrix (ECM)-receptor interaction and metabolic pathways were the top two KEGG pathways significantly enriched in SGBS adipocytes, which included positively enriched mitochondrial respiration and oxidation pathways...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642037/testosterone-regulates-3t3-l1pre-adipocyte-differentiation-and-epididymal-fat-accumulation-in-mice-through-modulating-macrophage-polarization
#3
Xiaojiao Ren, Xiaojian Fu, Xinhua Zhang, Shiqiang Chen, Shuguang Huang, Lun Yao, Guoquan Liu
Low testosterone levels are strongly related to obesity in males. The balance between the classically M1 and alternatively M2 polarized macrophages also plays a critical role in obesity. It is not clear whether testosterone regulates macrophage polarization and then affects adipocyte differentiation. In this report, we demonstrate that testosterone strengthens interleukin (IL) -4-induced M2 polarization and inhibits lipopolysaccharide (LPS) -induced M1 polarization, but has no direct effect on adipocyte differentiation...
June 19, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28641777/role-of-parl-pink1-parkin-pathway-in-adipocyte-differentiation
#4
Ming-Yuh Shiau, Pin-Shen Lee, Ying-Jyun Huang, Ching-Ping Yang, Chiao-Wan Hsiao, Kai-Yun Chang, Huan-Wen Chen, Yih-Hsin Chang
OBJECTIVE: Adipogenesis determines the number of adipocytes which is increased when individuals become obese. Mitochondria undergo remarkable morphological and functional changes during adipogenesis. PTEN-induced kinase 1 (PINK1) is pivotal to maintain mitochondrial homeostasis in neural cells. The present study aimed at investigating effects of PINK1 on adipogenesis and energy metabolism. METHODS: Expression of presenilin associated rhomboid-like protein (PARL), PINK1 and Parkin, as well as the interaction among these proteins was temporally examined during adipogenesis...
July 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28640866/diet-induced-adipose-tissue-expansion-is-mitigated-in-mice-with-a-targeted-inactivation-of-mesoderm-specific-transcript-mest
#5
Rea P Anunciado-Koza, Justin Manuel, Randall L Mynatt, Jingying Zhang, Leslie P Kozak, Robert A Koza
Interindividual variation of white adipose tissue (WAT) expression of mesoderm specific transcript (Mest), a paternally-expressed imprinted gene belonging to the α/β-hydrolase fold protein family, becomes apparent among genetically inbred mice fed high fat diet (HFD) and is positively associated with adipose tissue expansion (ATE). To elucidate a role for MEST in ATE, mice were developed with global and adipose tissue inactivation of Mest. Mice with homozygous (MestgKO) and paternal allelic (MestpKO) inactivation of Mest were born at expected Mendelian frequencies, showed no behavioral or physical abnormalities, and did not perturb expression of the Mest locus-derived microRNA miR-335...
2017: PloS One
https://www.readbyqxmd.com/read/28640098/the-characteristics-of-stem-cells-in-human-degenerative-intervertebral-disc
#6
Lin Liang, Xuefeng Li, Dapeng Li, Weimin Jiang, Heng Wang, Jie Chen, Zhiyong Sun, Niannian Zhang, Yangyi Zhu
BACKGROUND: The aim of this study is to identify which possessed the best stem-cell-like characteristics in 3 kinds of cell in human degenerative intervertebral disc: NPSCs (nucleus pulposus-derived stem cells), AFSCs (annulus fibrosus-derived stem cells), or CESCs (cartilage endplate-derived stem cells). METHODS: We separated the disc samples obtained from 15 surgically treated patients with disc degenerative diseases into nucleus pulposus, annulus fibrosus, and cartilage endplate...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28634560/atypical-lipomatous-tumor-well-differentiated-liposarcoma-developed-in-a-patient-with-progressive-muscular-dystrophy-a-case-report-and-review-of-the-literature
#7
Ryo Miyagi, Toshihiko Nishisho, Shinjiro Takata, Yoshimitsu Shimatani, Shunichi Toki, Koichi Sairyo
BACKGROUND: Atypical lipomatous tumor/well-differentiated liposarcoma (ALT/WDLS) is an intermediate or locally aggressive form of adipocytic soft tissue sarcoma. Muscular dystrophy (MD) is characterized by progressive muscle atrophy and its replacement by adipose and fibrous tissue. Recently, some authors have reported that MD genes are related to neoplastic formation, but there have been no detailed clinical reports of ALT associated with MD. CASE PRESENTATION: A 73-year-old woman with a diagnosis of limb-girdle MD visited our department for recurrence of a huge tumor in her left thigh...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28632950/fibroblastic-connective-tissue-nevus-clinicopathological-and-immunohistochemical-study-of-14-cases
#8
Ilaria Pennacchia, Heinz Kutzner, Dmitry V Kazakov, Thomas Mentzel
BACKGROUND: We present herein a series of 14 lesions showing overlapping features with the newly defined benign cutaneous mesenchymal neoplasm labelled as fibroblastic connective tissue nevus (FCTN). METHODS AND RESULTS: Eight patients were male and five were female, ranging in age from 1 to 56 years. Lesions appeared as isolated nodules or plaques on the trunk (7 cases), the limbs (4 cases) and the neck (2 cases). Histologically, all cases were composed of bundles of bland spindle cells of fibroblastic/myofibroblastic lineage irregularly branching within the reticular dermis and along fibrous septa in the subcutis...
June 20, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28628672/low-dose-exposure-to-bisphenols-a-f-and-s-of-human-primary-adipocyte-impacts-coding-and-non-coding-rna-profiles
#9
Marie Verbanck, Mickaël Canouil, Audrey Leloire, Véronique Dhennin, Xavier Coumoul, Loïc Yengo, Philippe Froguel, Odile Poulain-Godefroy
Bisphenol A (BPA) exposure has been suspected to be associated with deleterious effects on health including obesity and metabolically-linked diseases. Although bisphenols F (BPF) and S (BPS) are BPA structural analogs commonly used in many marketed products as a replacement for BPA, only sparse toxicological data are available yet. Our objective was to comprehensively characterize bisphenols gene targets in a human primary adipocyte model, in order to determine whether they may induce cellular dysfunction, using chronic exposure at two concentrations: a "low-dose" similar to the dose usually encountered in human biological fluids and a higher dose...
2017: PloS One
https://www.readbyqxmd.com/read/28627722/pterostilbene-inhibits-lipogenic-activity-similar-to-resveratrol-or-caffeine-but-differently-modulates-lipolysis-in-adipocytes
#10
Saioa Gomez-Zorita, Chloé Belles, Anaïs Briot, Alfredo Fernández-Quintela, Maria P Portillo, Christian Carpéné
The anti-obesity effects of resveratrol shown in rodents are not transposed into an efficient therapy of human obesity. Consequently, the search for molecules mimicking or surpassing resveratrol actions is ongoing. The natural phenolic compound pterostilbene exhibits beneficial health effects and has the capacity to limit fat mass in animal models. In this study, we tested whether pterostilbene modulates triacylglycerol accumulation/breakdown. Prolonged exposure to pterostilbene or resveratrol inhibited adipocyte differentiation in 3T3-F442A preadipocytes...
June 19, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28626403/a-twenty-four-year-old-woman-with-left-flank-lipoma-like-hibernoma
#11
R E Shackelford, M Al Shaarani, J Ansari, E Wei, J Cotelingam
A 24-year-old woman presented with a 5-month history of a left flank mass that was painful on palpation. Magnetic resonance imaging revealed a 10.0 × 6.0 × 2.5 cm mass consistent with lipoma. A fatty lobulated mass was excised and subjected to H&E staining and immunohistochemical analyses. The specimen consisted of mature univacuolated adipocytic cells, with intermixed multivacuolated eosinophilic granular cells. No atypia or hyperchromasia was identified. Most of the cells were S100 positive and Ki-67 immunonegative...
May 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28626214/growth-hormone-releasing-hormone-is-produced-by-adipocytes-and-regulates-lipolysis-through-growth-hormone-receptor
#12
F Rodríguez-Pacheco, C Gutierrez-Repiso, S García-Serrano, A Ho-Plagaro, J M Gómez-Zumaquero, S Valdes, M Gonzalo, J Rivas-Becerra, C Montiel-Casado, G Rojo-Martínez, E García-Escobar, E Garcia-Fuentes
BACKGROUND: Growth hormone-releasing hormone (GHRH) plays a crucial role in growth hormone (GH) secretion, but little is known about its production by adipocytes and its involvement in adipocyte metabolism. OBJECTIVES: To determine if GHRH and its receptor (GHRH-R) are present in human adipocytes and to study their levels in obesity. Also, to analize the effects of GHRH on human adipocyte differentiation and lipolysis. METHODS: GHRH/GHRH-R and GH/GH-R mRNA expression levels were analyzed in human mature adipocytes from non-obese and morbidly obese subjects...
June 19, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28625492/cbmg-a-novel-derivative-of-mansonone-g-suppresses-adipocyte-differentiation-via-suppression-of-ppar%C3%AE-activity
#13
Hyo Kyeong Kim, Rita Hairani, Hana Jeong, Mi Gyeong Jeong, Warinthorn Chavasiri, Eun Sook Hwang
Mansorins and mansonones have been isolated from Mansonia gagei heartwoods, a traditional herbal medicine used to treat heart failure, and characterized to have anti-oxidant, anti-bacterial, anti-tumor, and anti-estrogenic activities. However, there is as yet no information on their effects on adipogenesis and lipid storage associated with heart disease. In this study, we investigated the effects of naturally occurring compounds on adipogenic differentiation and sought to develop more potent anti-adipogenic compound...
June 15, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28623308/improved-growth-patterns-in-cystic-fibrosis-mice-after-loss-of-histone-deacetylase-6
#14
Sharon M Rymut, Deborah A Corey, Dana M Valerio, Bernadette O Erokwu, Chris A Flask, Thomas J Kelley, Craig A Hodges
Growth failure in cystic fibrosis (CF) patients has been well-documented and shown to correlate with poorer disease outcomes. This observation is also true in CF animal models, including mouse, pig, rat, and ferret. The etiology underlying growth deficits is unknown, and our previous work demonstrated reduced tubulin acetylation in CF cell models and tissue that is correctable by inhibition of histone deacetylase-6 (HDAC6). Here, we hypothesize that loss of HDAC6 will improve growth phenotype in a CF mouse model...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28623133/prostaglandin-d2-enhances-lipid-accumulation-through-suppression-of-lipolysis-via-dp2-crth2-receptors-in-adipocytes
#15
Eri Wakai, Kosuke Aritake, Yoshihiro Urade, Ko Fujimori
Prostaglandin (PG) D2 enhanced lipid accumulation in adipocytes. However, its molecular mechanismremains unclear. In this study, we investigated the regulatory mechanisms of PGD2-elevated lipid accumulation in mouse adipocytic 3T3-L1 cells. The Gi-coupled DP2 (CRTH2) receptors (DP2R), one of the two-types of PGD2 receptors were dominantly expressed in adipocytes. A DP2R antagonist, CAY10595, but not DP1 receptor antagonist, BWA868C cleared the PGD2-elevated intracellular triglyceride level. While, a DP2R agonist, 15R-15-methyl PGD2 (15R) increased the mRNA levels of the adipogenic and lipogenic genes, and decreased the glycerol release level...
June 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28622294/hepatocyte-nuclear-factor-1b-is-a-novel-negative-regulator-of-white-adipocyte-differentiation
#16
Xin Wang, Hao Wu, Weihua Yu, Jiangzheng Liu, Jie Peng, Nai Liao, Jieling Zhang, Xiaodi Zhang, Chunxu Hai
Hepatocyte nuclear factor 1b (HNF1b) is a transcription factor belonging to the HNF family. We aimed to investigate the role of HNF1b in white adipocyte differentiation. The expression of HNF1b was reduced in white adipose tissue (WAT) of both diet-induced and genetic obese mice and decreased during the process of 3T3-L1 adipocyte differentiation. Downregulation of HNF1b enhanced 3T3-L1 adipocyte differentiation and upregulation of HNF1b inhibited this process. Upregulation of HNF1b inhibited peroxisome proliferator-activated receptor γ (PPARγ) and its target gene expression, while downregulation of HNF1b increased those genes expression...
June 16, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28620299/the-alkamide-trans-pellitorine-targets-ppar%C3%AE-via-trpv1-and-trpa1-to-reduce-lipid-accumulation-in-developing-3t3-l1-adipocytes
#17
Barbara Lieder, Mathias Zaunschirm, Ann-Katrin Holik, Jakob P Ley, Joachim Hans, Gerhard E Krammer, Veronika Somoza
Adipose tissue is an important endocrine organ in the human body. However, pathological overgrowth is associated with chronic illness. Regulation of adipogenesis and maturation of adipocytes via bioactive compounds in our daily diet has been in focus of research in the past years and showed promising results for agonists of the ion channels transient receptor potential channel (TRP) V1 and A1. Here, we investigated the anti-adipogenic potential and underlying mechanisms of the alkamide trans-pellitorine present in Piper nigrum via TRPV1 and TRPA1 in 3T3-L1 cells...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28616781/impact-of-hyperglycemia-on-cystathionine-%C3%AE-lyase-expression-during-resuscitated-murine-septic-shock
#18
Tamara Merz, Josef A Vogt, Ulrich Wachter, Enrico Calzia, Csaba Szabo, Rui Wang, Peter Radermacher, Oscar McCook
BACKGROUND: Cystathionine-γ-lyase (CSE) was shown to have a regulatory role in glucose metabolism. Circulatory shock can induce metabolic stress, thereby leading to hyperglycemia and mitochondrial dysfunction. In vitro data suggest an effect of high glucose on CSE expression. Therefore, the aim of this study was to investigate the effects of hyperglycemia on CSE expression in resuscitated murine septic shock. METHODS: Normo- (80-150 mg/dl) and hyperglycemic (>200 mg/dl) male C57/BL6J mice (n = 5-6 per group) underwent cecal ligation and puncture (CLP)-induced polymicrobial sepsis or sham procedure (n = 6 per group) and, 15 h afterwards, were anesthetized again, surgically instrumented and received intensive care treatment, including antibiotics, lung protective mechanical ventilation, circulatory support, and intravenous (i...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28614778/the-human-immunodeficiency-virus-hiv1-protease-inhibitor-sanquinavir-activates-autophagy-and-removes-lipids-deposited-in-lipid-droplets
#19
A Polus, M Bociaga-Jasik, U Czech, J Goralska, U Cialowicz, M Chojnacka, M Polus, K Jurowski, A Dembinska-Kiec
Reduction in mortality and increased average life span of the human immunodeficiency virus (HIV)-infected patients treated with antiretroviral therapy (ART) are associated with the risk of unwanted effects, such as insulin resistance and dyslipidemia with cardiovascular complications. Antiretroviral therapy may also be associated with lipodystrophy characterized as peripheral lipoatrophy with central fat accumulation. Understanding the molecular mechanisms of lipodystrophy caused by ART is important for therapeutic strategy and the prediction of side-effects...
April 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28613919/hypercapnia-accelerates-adipogenesis-a-novel-role-of-high-co2-in-exacerbating-obesity
#20
Ryota Kikuchi, Takao Tsuji, Osamu Watanabe, Kazuhiro Yamaguchi, Kinya Furukawa, Hiroyuki Nakamura, Kazutetsu Aoshiba
Obesity is a major risk factor for the development of obstructive sleep apnea (OSA) and obesity hypoventilation syndrome (OHS), which manifest as intermittent hypercapnia and sustained plus intermittent hypercapnia, respectively. In this study, we investigated whether CO2 affects adipocyte differentiation (adipogenesis) and maturation (hypertrophy). Human visceral or subcutaneous preadipocytes were grown to confluence and then induced to differentiate to adipocytes under hypocapnia, normocapnia, and hypercapnia with or without hypoxia...
June 14, 2017: American Journal of Respiratory Cell and Molecular Biology
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