Read by QxMD icon Read

TGF beta

Lijiang Ma, Wendy K Chung
Group 1 pulmonary hypertension or pulmonary arterial hypertension (PAH) is a rare disease characterized by proliferation and occlusion of small pulmonary arterioles, leading to progressive elevation of pulmonary artery pressure and pulmonary vascular resistance, and right ventricular failure. Historically it has been associated with a high mortality rate, although over the last decade, treatment has improved survival. PAH includes idiopathic PAH (IPAH), heritable PAH (HPAH), and PAH associated with certain medical conditions...
October 22, 2016: Journal of Pathology
Long-Xing Xue, Zhong-Hang Xu, Jiao-Qi Wang, Cui Yang, Hong-Yu Liu, Wen-Zhao Liang, Qiu-Ye Ji, Jin-Ting He, Yan-Kun Shao, Jing Mang, Zhong-Xin Xu
Activin A (Act A), a member of the transforming growth factor-beta (TGF-β), reduces neuronal apoptosis during cerebral ischemia through Act A/Smads signaling pathway. However, little is known about the effect of Act A/Smads pathway on autophagy in neurons. Here, we found that oxygen-glucose deprivation (OGD)-induced autophagy was suppressed by exogenous Act A in a concentration-dependent manner and enhanced by Act A/Smads pathway inhibitor (ActRIIA-Ab) in neuronal PC12 cells. These results indicate that Act A/Smads pathway negatively regulates autophagy in OGD-treated PC12 cells...
October 18, 2016: Biochemical and Biophysical Research Communications
Jun Li, Jie Ao, Kai Li, Jie Zhang, Yanyan Li, Le Zhang, Yuyan Wei, Di Gong, Junping Gao, Weiwei Tan, Lugang Huang, Lunxu Liu, Ping Lin, Yuquan Wei
Multidrug resistance (MDR) is one of the most important contributors to the high mortality of cancer and remains a major concern. We previously found that zinc finger protein 32 (ZNF32), an important transcription factor associated with cancer in Homo sapiens, protects tumor cells against cell death induced by oxidative stress and other stimuli. We thus hypothesized that ZNF32 might enable the tolerance of cancer cells to anti-tumor drugs because higher ZNF32 expression has been found in cancer tissues and in drug-resistant lung adenocarcinoma (AC) cells...
October 20, 2016: Cell Death & Disease
Chung-Ching Chio, Mao-Tsun Lin, Ching-Ping Chang, Hung-Jung Lin
BACKGROUND: Transforming growth factor-beta 1 (TGF-β1) regulates many processes after traumatic brain injury (TBI). Both Neuro AiD(™) (MLC601) and Astragaloside (AST) attenuate microglia activation in rats with TBI. The purpose of this study was to investigate whether MLC601 or AST improves output of TBI by affecting microglial expression of TGF-β1. MATERIALS AND METHODS: Adult male Sprague-Dawley rats (120 in number) were used to investigate the contribution of TGF-β1-containing microglia in the MLC601-mediated or the AST-mediated neuroprotection in the brain trauma condition using lateral fluid-percussion injury...
October 19, 2016: European Journal of Clinical Investigation
Mohammad Massumi, Farzaneh Pourasgari, Amarnadh Nalla, Battsetseg Batchuluun, Kristina Nagy, Eric Neely, Rida Gull, Andras Nagy, Michael B Wheeler
The ability to yield glucose-responsive pancreatic beta-cells from human pluripotent stem cells in vitro will facilitate the development of the cell replacement therapies for the treatment of Type 1 Diabetes. Here, through the sequential in vitro targeting of selected signaling pathways, we have developed an abbreviated five-stage protocol (25-30 days) to generate human Embryonic Stem Cell-Derived Beta-like Cells (ES-DBCs). We showed that Geltrex, as an extracellular matrix, could support the generation of ES-DBCs more efficiently than that of the previously described culture systems...
2016: PloS One
John Chan, Chao-Sheng Lo, Yixuan Shi, Isabelle Chenier, Shao-Ling Zhang
OBJECTIVE: We aimed to investigate whether overexpression of heterogeneous nuclear ribonucleoprotein F (HnRNP F, a transcription factor) in renal proximal tubular cells (RPTCs) prevents systemic hypertension and kidney injury in type 2 diabetic db/db transgenic (Tg) mice and study its underlying mechanism (s) of action. DESIGN AND METHOD: Db/db hnRNP F-Tg mice (BKS strain) were generated by cross-breeding of db/m + mice with Tg mice specifically overexpressing HnRNP F in their RPTCs using kidney-specific androgen-regulated protein promoter (KAP2)...
September 2016: Journal of Hypertension
Ana Vrdoljak, Vanja Ivković, Sandra Karanović, Živka Dika, Ivana Vuković, Jelena Kos, Mario Laganović, Tajana Željković Vrkić, Margareta Fištrek Prlić, Ivan Pećin, Bojan Jelaković
OBJECTIVE: It was observed that glomerular hyperfiltration (GHF) is associated with progression of kidney disease in diabetics, patients in stage 1 hypertension (HT), and we found previously that eGFR decreased faster also in prehypertensives (PHT) with GHF. Here we analyzed whether GHF in PHT is associated with other biomarkers of early renal impairment. DESIGN AND METHOD: From 954 subjects enrolled in ENAH follow-up study, 371(137 m;mean age = 46years) were eligible for further analysis:100 with optimal,72 with normal BP,70 with PHT(high normal BP),and 129 with newly diagnosed untreated HT...
September 2016: Journal of Hypertension
Hisashi Kai
There is increasing evidence that fibro-inflammatory changes play a role in variety of cardiovascular diseases. We created new rat models to investigate the role of fibro-inflammatory changes in the pathophysiology of systolic and diastolic dysfunction in hypertensive heart. (1) a model of a blood pressure (BP) surge was created by performing abdominal aortic constriction in Wistar-Kyoto rats. Aortic constriction rapidly increased BP and the high BP levels sustained. A BP surge transiently induced MCP-1 and TGF-beta induction, angiotensin converting enzyme activation, and macrophage infiltration, followed by left ventricular (LV) hypertrophy and perivascular reactive fibrosis...
September 2016: Journal of Hypertension
Jihee Kim, Zhenlong Zheng, Heesu Kim, Kyung Ae Nam, Kee Yang Chung
BACKGROUND: Owing to its potentially greater mechanical force on the implanted tissue, barbed thread is frequently used in face-lifting procedures. However, the long-term durability thereof remains controversial. Moreover, reports on underlying histologic and molecular changes resulting from face-lifting procedures are scarce. OBJECTIVE: To evaluate histologic and molecular changes induced by absorbable, barbed face-lifting thread in an animal model. MATERIALS AND METHODS: Fragments of monofilament, monodirectionally barbed polydioxanone thread were implanted in dorsal skin from 12 guinea pigs...
September 28, 2016: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
Mehmet Erol Can, Hasan Basri Çakmak, Gamze Dereli Can, Hatice Ünverdi, Yasin Toklu, Sema Hücemenoğlu
Purpose. To investigate the effect of platelet-rich fibrin (PRF) membrane on wound healing. Methods. Twenty-four right eyes of 24 New Zealand rabbits equally divided into 2 groups for the study design. After the creation of 5 × 5 mm conjunctival damage, it was secured with PRF membrane, which was generated from the rabbit's whole blood samples in PRF membrane group, whereas damage was left unsutured in the control group. Three animals were sacrificed in each group on the 1st, 3rd, 7th, and 28th postoperative days...
2016: Journal of Ophthalmology
Piero Pingitore, Paola Dongiovanni, Benedetta Maria Motta, Marica Meroni, Saverio Massimo Lepore, Rosellina Margherita Mancina, Serena Pelusi, Cristina Russo, Andrea Caddeo, Giorgio Rossi, Tiziana Montalcini, Arturo Pujia, Olov Wiklund, Luca Valenti, Stefano Romeo
Liver fibrosis is a pathological scarring response to chronic hepatocellular injury and hepatic stellate cells (HSCs) are key players in this process. PNPLA3 I148M is a common variant robustly associated with liver fibrosis but the mechanisms underlying this association are unknown.We aimed to examine a) the effect of fibrogenic and proliferative stimuli on PNPLA3 levels in HSCs and b) the role of wild type and mutant PNPLA3 overexpression on markers of HSC activation and fibrosis.Here we show that PNPLA3 is upregulated by the fibrogenic cytokine transforming growth factor-beta (TGF-β), but not by platelet-derived growth factor (PDGF), and is involved in the TGF-β-induced reduction in lipid droplets in primary human HSCs...
October 13, 2016: Human Molecular Genetics
Bernardo Sousa-Pinto, Laura Gonçalves, Adriana R Rodrigues, Inês Tomada, Henrique Almeida, Delminda Neves, Alexandra M Gouveia
Transforming growth factor beta (TGF-β) plays an important role in the pathogenesis of obesity, influencing the release of inflammation mediators and promoting remodeling and collagen deposition in the adipose tissue (AT). In this context, this work aims to elucidate whether TGF-β and Smad-dependent or Smad-independent signaling pathways contribute to regional differentiation of AT in high-fat diet (HFD) and energy-restricted (ER) rat models. For this, TGF-β, TGF-β receptors I and II, PAI-1 and GLUT4 mRNA levels were quantified by real-time PCR, and western blotting assays allowed the semiquantification of TGF-β and proteins from Smad3, ERK1/2 and Akt signaling pathways in subcutaneous and visceral (epididymal, retroperitoneal and mesenteric) fat depots from control, HFD and ER-treated rats...
August 26, 2016: Journal of Nutritional Biochemistry
Niina K Palin, Johanna Savikko, Arja Pasternack, Jukka M Rintala, Bhanu Kalra, Shivani Mistry, Ajay Kumar, Marie-Paule Roth, Heikki Helin, Olli Ritvos
BACKGROUND: Activins are members of the TGF-beta superfamily of cytokines. They play critical roles in the onset of acute and chronic inflammatory responses. The aim of this study was to investigate how activin inhibition affects acute kidney injury and inflammation after transplantation. METHODS: The study was done in kidney transplantation and renal ischemia-reperfusion models in the rat. Soluble activin type 2 receptor (sActRIIB-Fc) was used to inhibit activin signaling...
October 12, 2016: Transplant International: Official Journal of the European Society for Organ Transplantation
Aihua Hou, Kai Pong Law, Min Qi Tin, Yoon Pin Lim, Louis Tong
Pterygium is a triangular shaped ocular fibrous surface lesion growing from conjunctiva towards central cornea, causing ocular irritation, astigmatism, and visual disturbance. The condition is characterized by epithelial proliferation, fibrovascular growth, chronic inflammation, and prominent extracellular matrix remodeling. Studies have suggested that aberrant extracellular proteins secreted by fibroblasts lead to abnormal matrix production and tissue invasion contributing to the development of the disease...
October 7, 2016: Experimental Eye Research
Chi-Young Yun, Hwajung Choi, Young-Jae You, Jin-Young Yang, Jin-A Baek, Eui-Sic Cho
Dentin is the major part of tooth and formed by odontoblasts. Under the influence of the inner enamel epithelium, odontoblasts differentiate from ectomesenchymal cells of the dental papilla and secrete pre-dentin which then undergo mineralization into dentin. Transforming growth factor-beta (TGF-β)/bone morphogenetic protein (BMP) signaling is essential for dentinogenesis; however, the precise molecular mechanisms remain unclear. To understand the role of TGF-β/BMP signaling in odontoblast differentiation and dentin formation, we generated mice with conditional ablation of Smad4, a key intracellular mediator of TGF-β/BMP signaling, using Osr2 or OC-Cre mice...
September 2016: Anatomy & Cell Biology
Po-Shuen Lin, Hsiao-Hua Chang, Chien-Yang Yeh, Mei-Chi Chang, Chiu-Po Chan, Han-Yueh Kuo, Hsin-Cheng Liu, Wan-Chuen Liao, Po-Yuan Jeng, Sin-Yuet Yeung, Jiiang-Huei Jeng
BACKGROUND/PURPOSE: In order to clarify the role of transforming growth factor beta 1 (TGF-β1) in pulp repair/regeneration responses, we investigated the differential signaling pathways responsible for the effects of TGF-β1 on collagen turnover, matrix metalloproteinase-3 (MMP-3), and tissue inhibitor of metalloproteinase-1 (TIMP-1) production in human dental pulp cells. METHODS: Pulp cells were exposed to TGF-β1 with/without pretreatment and coincubation by 1,4-diamino-2,3-dicyano-1,4-bis(o-aminophenyl mercapto)butadiene (U0126; a mitogen-activated protein kinase kinase [MEK]/extracellular signal-regulated kinase [ERK] inhibitor) and 4-(5-benzol[1,3]dioxol-5-yl-4-pyrldin-2-yl-1H- imidazol-2-yl)-benzamide hydrate (SB431542; an activin receptor-like kinase-5/Smad signaling inhibitor)...
October 6, 2016: Journal of the Formosan Medical Association, Taiwan Yi Zhi
Yuan-Yuan Zhan, Jin-Hui Wang, Xing Tian, Shi-Xiu Feng, Lin Xue, Li-Ping Tian
ETHNOPHARMACOLOGICAL RELEVANCE: Citrullus lanatus ssp. vulgaris var. megalaspermus Lin et Chao, was also known as watermelon belongs to family Cucurbitaceae, variously used as healthy food and in the treatment of liver and lungs problems. Currently, Citrullus lanatus has become a major economic crop of medicinal and edible effects with regional characteristics. AIM: This study was designed to evaluate the hepatoprotective and antioxidant activity of the seed melon (Citrullus lanatus ssp...
October 4, 2016: Journal of Ethnopharmacology
Claudio Corallo, Maurizio Cutolo, Bashar Kahaleh, Gianluca Pecetti, Antonio Montella, Chiara Chirico, Stefano Soldano, Ranuccio Nuti, Nicola Giordano
BACKGROUND: Systemic sclerosis (SSc) is characterized by early vascular abnormalities and subsequent fibroblast activation to myofibroblasts, leading to fibrosis. Recently, endothelial-to-mesenchymal transition (EndoMT), a complex biological process in which endothelial cells lose their specific markers and acquire a mesenchymal or myofibroblastic phenotype, has been reported in SSc. In the present study, we evaluated the ability of endothelin-1 (ET-1) dual receptor antagonists bosentan (BOS) and macitentan (MAC) to antagonize EndoMT in vitro...
October 6, 2016: Arthritis Research & Therapy
Chenghua Du, Pan Pan, Yan Jiang, Qiuli Zhang, Jinsuo Bao, Chang Liu
BACKGROUND: Glioma is one of the most common primary malignancies in the brain or spine. The transcription factor (TF) CCAAT/enhancer binding protein beta (CEBPB) is important for maintaining the tumor initiating capacity and invasion ability. To investigate the regulation mechanism of CEBPB in glioma, microarray data GSE47352 was analyzed. METHODS: GSE47352 was downloaded from Gene Expression Omnibus, including three samples of SNB19 human glioma cells transduced with non-target control small hairpin RNA (shRNA) lentiviral vectors for 72 h (normal glioma cells) and three samples of SNB19 human glioma cells transduced with CEBPB shRNA lentiviral vectors for 72 h (CEBPB-silenced glioma cells)...
October 6, 2016: World Journal of Surgical Oncology
Daniele Pereira Jardim, Paula Cristina Eiras Poço, Alexandre Holthausen Campos
Chronic kidney disease (CKD) is a worldwide public health problem that affects millions of men and women of all ages and racial groups. Loss of mesangial cells (MC) represents an early common feature in the pathogenesis of CKD. Transforming growth factor-β1 (TGF-β1) is a key inducer of kidney damage and triggers several pathological changes in renal cells, notably MC apoptosis. However, the mechanism of MC apoptosis induced by TGF-β1 remains elusive. Here we demonstrate for the first time a novel regulatory pathway in which the disheveled-binding antagonist of beta-catenin 1 (Dact1) gene is upregulated by TGF-β1, inducing MC apoptosis...
October 7, 2016: Journal of Cellular Physiology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"