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https://www.readbyqxmd.com/read/28425848/the-contribution-of-bone-marrow-derived-cells-to-the-human-adipocyte-pool
#1
Peter Arner, Mikael Rydén
White adipose tissue is a remarkably expandable organ with results in the last decade showing that human white adipocytes are continuously turned over during the entire life-span. Data primarily in murine models have demonstrated that adipocytes are derived from precursors present mainly in the perivascular areas of adipose tissue but their precise origin remains unclear. Subsets of cells present in bone marrow display a multipotent differentiation capacity which has prompted the hypothesis that bone marrow-derived cells (BMDCs) may also contribute to the adipocyte pool present in peripheral fat depots...
March 15, 2017: Adipocyte
https://www.readbyqxmd.com/read/28425419/a-rare-bsep-mutation-associated-with-a-mild-form-of-progressive-familial-intrahepatic-cholestasis-type-2
#2
Orith Waisbourd-Zinman, Lea F Surrey, Anna E Schwartz, Pierre A Russo, Jessica Wen
Progressive Familial Intrahepatic Cholestasis type 2 (PFIC2) is a rare cholestatic disorder diagnosed in infancy or childhood that can lead to severe hepatic fibrosis and liver failure. Mutations in the ABCB11 gene result in a deficiency of the bile salt export protein (BSEP) and accumulation of bile inside the hepatocytes. Hepatocellular carcinoma is another condition associated with severe forms of deletion mutations in the ABCB11 gene. Treatment options including ursodeoxycholic acid biliary diversion have mixed outcomes and some patients require liver transplantation...
May 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28423354/cd54-rabbit-adipose-derived-stem-cells-overexpressing-hif-1%C3%AE-facilitate-vascularized-fat-flap-regeneration
#3
De-Quan Li, Guan-Ming Lu, Yi-Dan Liang, Zhi-Jie Liang, Min-Hong Huang, Qi-Liu Peng, Dong-Hua Zou, Rong-He Gu, Fang-Tian Xu, Hui Gao, Zhen-Dong Chen, Guang-Yi Chi, Zhong-Heng Wei, Li Chen, Hong-Mian Li
Fat flap transplantation is frequently performed in patients suffering from soft tissue defects resulting from disease or trauma. This study explored the feasibility of constructing vascularized fat flaps using rabbit adipose-derived stem cells (rASCs) and collagen scaffolds in a rabbit model. We evaluated rASCs proliferation, paracrine function, adipogenesis, vascularization, and CD54 expression, with or without HIF-1α transfection in vitro and in vivo. We observed that adipogenic differentiation potential was greater in rASCs with high CD54 expression (CD54+rASCs) than in those with low expression (CD54-rASCs), both in vitro and in vivo...
April 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28422962/docosahexaenoic-acid-blocks-progression-of-western-diet-induced-nonalcoholic-steatohepatitis-in-obese-ldlr-mice
#4
Kelli A Lytle, Carmen P Wong, Donald B Jump
BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is a major public health concern in western societies. Nonalcoholic steatohepatitis (NASH), the progressive form of NAFLD, is characterized by hepatic steatosis, inflammation, oxidative stress and fibrosis. NASH is a risk factor for cirrhosis and hepatocellular carcinoma. NASH is predicted to be the leading cause of liver transplants by 2020. Despite this growing public health concern, there remain no Food and Drug Administration (FDA) approved NASH treatments...
2017: PloS One
https://www.readbyqxmd.com/read/28412246/absence-of-nucks-augments-paracrine-effects-of-mesenchymal-stem-cells-mediated-cardiac-protection
#5
Yuelin Zhang, Sinming Chiu, Xiaoting Liang, Yuet-Hung Chai, Yiming Qin, Junwen Wang, Xiang Li, Beiying Qiu, Vinay Tergaonkar, Hung-Fat Tse, Qizhou Lian
Bone marrow-derived mesenchymal stem cells (BM-MSCs) contribute to myocardial repair after myocardial infarction (MI) by secreting a panel of growth factors and cytokines. This study was to investigate the potential mechanisms of the nuclear casein kinase and cyclin-dependent kinase substrate 1 (NUCKS) in regulation of the profiles of BM-MSCs secretion and compare the therapeutic efficacy of NUCKS(-/-)- and wide type-BM-MSCs (WT-BM-MSCs) on MI. The secretion profiles between NUCKS(-/-)- and WT-BM-MSCs under hypoxia (1%O2) were analyzed...
April 12, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28390845/prevalence-of-malnutrition-in-adult-patients-previously-treated-with%C3%A2-allogeneic-hematopoietic-stem-cell-transplantation
#6
Thibault Brotelle, Richard Lemal, Aurélie Cabrespine, Cécile Combal, Eric Hermet, Aurélie Ravinet, Jacques-Olivier Bay, Corinne Bouteloup
INTRODUCTION: Malnutrition is common after allogeneic hematopoietic stem cell transplantation (allo-HSCT), and is a well-known prognostic factor for survival. The nutritional status of patients in a long term after allo-HSCT is less well documented. The main objective of this study was to evaluate the prevalence of malnutrition in adult patients who underwent allo-HSCT more than one year ago. Secondary objectives were to assess body composition, muscle strength, and factors associated with malnutrition...
March 28, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28379854/clinical-usefulness-of-controlled-attenuation-parameter-to-screen-hepatic-steatosis-for-potential-donor-of-living-donor-liver-transplant
#7
Young Mi Hong, Ki Tae Yoon, Mong Cho, Chong Woo Chu, Je Ho Rhu, Kwang Ho Yang, Jun Woo Lee
OBJECTIVE: Hepatic steatosis is associated with an increased risk of graft loss. Although the controlled attenuation parameter (CAP), a process based on transient elastography, has been suggested as a noninvasive method of assessing hepatic steatosis, to date, there is no study on the usefulness of CAP as a single screening tool for detecting hepatic steatosis in potential living donor liver. We evaluated the accuracy of CAP for detecting hepatic steatosis in potential liver donors. PATIENTS AND METHODS: All potential donors of living-donor liver transplantation who underwent a CAP assessment and ultrasonography-guided liver biopsy were enrolled...
April 4, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28369017/autologous-fat-transfer-for-thumb-carpometacarpal-joint-osteoarthritis-a-prospective-study
#8
Christian Herold, Hans-Oliver Rennekampff, Robert Groddeck, Sixtus Allert
BACKGROUND: Most surgeries for CMC joint osteoarthritis of the thumb irreversibly alter or destroy the anatomy. There is a high demand for minimal invasive alternatives. We report the results of autologous fat transfer for treatment of thumb CMC joint osteoarthritis. METHODS: In a prospective study 50 patients with thumb CMC joint osteoarthrits were observed for one year after autologous fat transfer. Manual liposuction and centrifugation was performed. Pain rating as per visual analog pain scale (VAS), objective force of pinch grip and fist closure and DASH scores before and after the treatment were analysed...
March 31, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28356441/left-ventricular-dysfunction-switches-mesenchymal-stromal-cells-toward-an-inflammatory-phenotype-and-impairs-their-reparative-properties-via-toll-like-receptor-4
#9
Nili Naftali-Shani, La-Paz Levin-Kotler, Dahlia Palevski, Uri Amit, David Kain, Natalie Landa, Edith Hochhauser, Jonathan Leor
Background -Little is known about the potentially unfavorable effects of mesenchymal stromal cell (MSC) activation on the heart. MSCs can respond to tissue injury by anti or pro-inflammatory activation. We sought to study the potential negative interaction between left ventricular dysfunction (LVD) and MSC activation. Methods -We isolated MSCs from cardiac (c) and subcutaneous (sc) fat tissues of mice with LVD, 28 days after myocardial infarction (MI), or sham operation. To evaluate the effect of LVD on MSCs, we characterized cMSCs and scMSCs in vitro Subsequently, we injected MSCs or saline into the infarcted myocardium of mice and evaluated left ventricular (LV) remodeling, and function, 28 days after MI...
March 29, 2017: Circulation
https://www.readbyqxmd.com/read/28356345/mtor-activation-protects-liver-from-ischemia-reperfusion-induced-injury-through-nf-%C3%AE%C2%BAb-pathway
#10
Ziru Li, Jing Zhang, Michael Mulholland, Weizhen Zhang
Hepatic steatosis renders liver more vulnerable for ischemia/reperfusion injury (IRI), which commonly occurs in transplantation, trauma, and liver resection. The underlying mechanism is not fully characterized. We aimed to clarify the role of mechanistic target of rapamycin (mTOR) signaling in hepatic ischemia/reperfusion injury (HIRI) in normal and steatotic liver using Alb-TSC1(-/-) (AT) and Alb-mTOR(-/-) (Am) transgenic mice. Steatotic liver induced by high-fat diet was more vulnerable to IRI. Activation of hepatic mTOR in AT mice decreased lipid accumulation attenuated HIRI as measured by terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) staining, circulating levels of alanine aminotransferase and lactate dehydrogenase, and inflammatory mediators such as monocyte chemoattractant protein 1 (MCP-1), TNF-α, and IL-6 and hepatic cleaved caspase 3 in mice fed either a normal chow diet or a high-fat diet...
March 29, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28329521/a-rare-case-of-cutaneous-acanthamoebiasis-in-a-renal-transplant-patient
#11
Frank Winsett, Jessica Dietert, Jaime Tschen, Michael Swaby, Carolyn A Bangert
A 35-year-old woman receiving immunosuppressionfor renal transplantation presented with a onemonthhistory of tender skin nodules on herbilateral upper extremities. A skin biopsy revealedgranulomatous inflammation in the deep dermisand the subcutaneous fat with foci of necrosis.Within the foci of necrosis were large histiocytoidstructures with prominent nuclei. Periodic acid-Schiffstain revealed a round organism with a thick capsule,consistent with amoebal trophozoites. Testing withthe Center for Disease Control revealed the organismto be Acanthamoeba...
March 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28328145/short-range-dispersal-maintains-a-volatile-marine-metapopulation-the-brown-alga-postelsia-palmaeformis
#12
Robert T Paine, Eric R Buhle, Simon A Levin, Peter Kareiva
The annual brown alga Postelsia palmaeformis is dependent for its survival on short-distance dispersal (SDD) where it is already established, as well as occasional long-distance colonization of novel sites. To quantify SDD, we transplanted Postelsia to sites lacking established plants within ≥10 m. The spatial distribution of the first naturally produced sporophyte generation was used to fit dispersal kernels in a hierarchical Bayesian framework. Mean dispersal distance within a year ranged from 0.16 to 0...
March 22, 2017: Ecology
https://www.readbyqxmd.com/read/28320625/low-osmolality-and-shear-stress-during-liposuction-impair-cell-viability-in-autologous-fat-grafting
#13
T Ismail, J Bürgin, A Todorov, R Osinga, N Menzi, R D Largo, M Haug, I Martin, A Scherberich, D J Schaefer
BACKGROUND: Liposuction and subsequent autologous fat grafting have become essential techniques for fat augmentation in plastic surgery. However, standard harvesting techniques that ensure the survival of adipocytes and stromal vascular fraction (SVF) cells and thus preserve the transplanted fat volume are lacking. In particular, the effect of different parameters of the tumescent solution has not been studied in this context. We hypothesized that the osmolality of the tumescent solution could have a significant effect on the survival of adipocytes and SVF cells...
May 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28303876/-ultrasonic-examination-of-the-breast-adipose-grafts-after-mammoplasty
#14
E P Fisenko, O I Startseva, D V Mel'nikov, A S Zakharenko, K A Kirillova, A G Ivanova, E D Pishchikova
AIM: To present the results of PRP-adipose grafts implanatation. MATERIAL AND METHODS: The study included 25 patients after transplantation of autologous adipose tissue. Autotransplantation was performed to correct volume defects of breast and to restore lost volume after polyacrylamide gel removal in 4 patients; after mastectomy in 6 cases; after complicated replacement using silicone endoprostheses in 11 patients; after previous reduction in 2 cases; after augmentation mammoplasty in 2 cases...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28299640/the-role-of-transplanted-visceral-fat-from-the-long-lived-growth-hormone-receptor-knockout-mice-on-insulin-signaling
#15
Mohammed T Bennis, Augusto Schneider, Berta Victoria, Andrew Do, Denise S Wiesenborn, Lina Spinel, Adam Gesing, John J Kopchick, Shadab A Siddiqi, Michal M Masternak
Growth hormone receptor knockout mice (GHRKO) are characterized by high insulin sensitivity and extended lifespan. Interestingly, the secretory activity of visceral fat in GHRKO mice is altered, stimulating whole body insulin sensitivity. In this study, we transplanted normal (N) mice with visceral fat pads from GHRKO or N mice to determine the role of visceral fat on the insulin signaling. We found that the transplant of visceral fat from GHRKO mice to N mice (N-GHRKO) improved whole body insulin sensitivity when comparing with sham-operated mice (N-S) and with mice that received visceral fat from N mice (N-N)...
February 2017: GeroScience
https://www.readbyqxmd.com/read/28293494/survival-and-inflammatory-response-in-adipose-derived-mesenchymal-stem-cell-enriched-mouse-fat-grafts
#16
Anadi Begic, Björn L Isfoss, Linn K Lønnerød, Alexander Vigen, Jan Ø Moskaug
BACKGROUND: Adipose tissue-derived mesenchymal stem cells (ATMSCs) are currently used in grafting procedures in a number of clinical trials. The reconstructive role of such cells in fat graft enrichment is largely unclear. This study was undertaken to assess survival and inflammatory response in fat grafts enriched with ATMSCs in mice. METHODS: ATMSC-enriched adipose tissue was grafted subcutaneously in a clinically relevant manner in mice, and survival and inflammatory response were determined by bioluminescence imaging of transgenic tissue constitutively expressing luciferase or driven by inflammation in wild-type animals...
December 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28260479/peripheral-muscle-strength-indicates-respiratory-function-testing-in-renal-recipients
#17
Gaye Ulubay, Saliha Uyanik, Balam Er Dedekarginoglu, Irem Serifoglu, Elif Kupeli, Serife Savas Bozbas, Siren Sezer, Mehmet Haberal
OBJECTIVES: Muscle wasting occurs in renal recipients due to decreased physical performance, and decreased respiratory muscle strength may occur due to changes in structure and function. Data are scarce regarding the roles of sarcopenia and nutritional status on respiratory muscle function in these patients. Here, we evaluated interactions among peripheral muscle strength, sarcopenia, nutritional parameters, and respiratory muscle function in renal transplant recipients. MATERIALS AND METHODS: Ninety-nine patients were prospectively enrolled between September and April 2016 at Baskent University...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28258089/oncostatin-m-receptor-%C3%AE-deficiency-attenuates-atherogenesis-by-inhibiting-jak2-stat3-signaling-in-macrophages
#18
Xin Zhang, Jing Li, Juan-Juan Qin, Wen-Lin Cheng, Xueyong Zhu, Fu-Han Gong, Zhigang She, Zan Huang, Hao Xia, Hongliang Li
Oncostatin M (OSM) is a secreted cytokine mainly involved in chronic inflammatory and cardiovascular diseases through binding to OSM receptor β(OSMR-β). Recent studies demonstrated that the presence of OSM contributed to the destabilization of atherosclerotic plaque. To investigate whether OSMR-β deficiency affects atherosclerosis, male OSMR-β-/-ApoE-/- mice were generated and utilized. Here we observed OSMR-β expression was remarkably up-regulated in both human and mouse atherosclerotic lesions, which was mainly located in macrophages...
March 3, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28256569/aggressive-non-alcoholic-steatohepatitis-following-rapid-weight-loss-and-or-malnutrition
#19
Jia-Huei Tsai, Linda D Ferrell, Vivian Tan, Matthew M Yeh, Monika Sarkar, Ryan M Gill
While non-alcoholic steatohepatitis is a slowly progressive disease, patients may rarely present in acute liver failure. We describe six patients who developed severe hepatic dysfunction following rapid weight loss or malnutrition. Rapid weight loss (18 to 91 kg) occurred after Roux-en-Y gastric bypass in four patients and starvation-like dieting or hypoalbuminemia was noted in two patients. Four patients either died or received an urgent liver transplant. Pathologic findings were characterized by advanced alcoholic steatohepatitis-like features, including extensive/circumferential centrizonal pericellular fibrosis, central scar with perivenular sclerosis/veno-occlusion with superimposed hepatocellular dropout, abundant/prominent hepatocellular balloons, and numerous Mallory-Denk bodies, but there was no history of excess alcohol consumption...
March 3, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28254844/vegf-a-expressing-adipose-tissue-shows-rapid-beiging-enhanced-survival-after-transplantation-and-confers-il4-independent-metabolic-improvements
#20
Jiyoung Park, Min Kim, Kai Sun, Yu Aaron An, Xue Gu, Philipp E Scherer
Adipocyte-derived VEGF-A plays a crucial role in angiogenesis and contributes to adipocyte function and systemic metabolism, such as insulin resistance, chronic inflammation and beigeing of subcutaneous adipose tissue. Utilizing a doxycycline (Dox)-inducible adipocyte-specific VEGF-A overexpressing mouse model, we investigated the dynamics of local VEGF-A effects on tissue beiging of adipose tissue transplants. VEGF-A overexpression in adipocytes triggers angiogenesis. We also observe a rapid appearance of beige fat cells in subcutaneous white adipose tissue (sWATs) within as early as 2 days post induction of VEGF-A...
March 2, 2017: Diabetes
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