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Joyce L Covre, Priscila C Cristovam, Renata R Loureiro, Rossen M Hazarbassanov, Mauro Campos, Élcio H Sato, José Álvaro P Gomes
PURPOSE: To culture quiescent human keratocytes and evaluate the effects of ultraviolet light and riboflavin on human corneal keratocytes in vitro. METHODS: Keratocytes were obtained from remaining corneoscleral ring donor corneas previously used in corneal transplant surgeries and cultured in DMEM/F12 with 2% FBS until confluence. Characterization of cultured cells was performed by immunofluorescence analysis for anti-cytokeratin-3, anti-Thy-1, anti-α-smooth muscle actin, and anti-lumican...
May 2016: Arquivos Brasileiros de Oftalmologia
Honglan Piao, Yuan Chi, Xiling Zhang, Zhen Zhang, Kun Gao, Manabu Niimi, Manabu Kamiyama, Jinming Zhang, Masayuki Takeda, Jian Yao
Suramin inhibits immune responses and protects cells against inflammatory cell injury. However, little is known about its mechanisms. Using an in vitro model of glomerular mesangial cell (MC) lysis induced by antibodies plus complement, we investigated the potential protective effects and mechanisms of suramin on immunologic cell injury. Exposure of rat MCs to anti-Thy-1 antibody plus complement or anti-MC rabbit serum caused complement-dependent cell lysis, which was blocked by suramin and its structural analogue NF023 and NF049, but not by PPADS, an antagonist of purinergic receptors...
March 30, 2016: Journal of Pharmacological Sciences
Wenjia Geng, Ribao Wei, Shuwen Liu, Li Tang, Hanyu Zhu, Pu Chen, Jie Wu, Xueguang Zhang, Fei Zhu, Zhong Yin, Xiangmei Chen
BACKGROUND: In China, mesangial proliferative glomerulonephritis (MsPGN) is one of the most common kidney diseases. In this study, we treated a rat model of chronic anti-Thy-1 MsPGN with Shenhua Tablet and evaluated whether the tablet was able to protect the kidney function. Thirty-six Wistar rats were randomly divided into six groups: (1) Sham surgery (Sham); (2) anti-Thy-1 nephritis model (Thy-1); (3) anti-Thy-1 nephritis model + irbesartan-treated (Irb); (4) anti-Thy-1 nephritis model + low-dose of Shenhua Tablet (SHL); (5) anti-Thy-1 nephritis model + medium-dose of Shenhua Tablet (SHM); (6) anti-Thy-1 nephritis model + high-dose of Shenhua Tablet (SHH)...
2016: Biological Research
Jukka M Rintala, Johanna Savikko, Sini E Rintala, Niina Palin, Petri K Koskinen
BACKGROUND: Mesangial proliferative glomerulonephritis is a common glomerular disorder that may lead to end-stage renal disease. Epidermal growth factor (EGF) plays an important role in the regulation of cell growth, proliferation, and differentiation and in the pathology of various renal diseases. Erlotinib is a novel, oral, highly selective tyrosine kinase inhibitor of the EGF receptor. It is clinically used to treat non-small cell lung and pancreatic cancers. Here, we investigated the effect of erlotinib on the progression of mesangioproliferative glomerulonephritis in an experimental model...
June 2016: Journal of Nephrology
Narges Yousefi-Rad, Mohammad Ali Shokrgozar, Mahdi Behdani, Shima Moradi-Kalbolandi, Mahdieh Motamedi-Rad, Mahdi Habibi-Anbouhi
Cluster of Differentiation 90 (CD90, Thy-1) has been proposed as one of the most important biomarkers in several cancer cells including cancer stem cells (CSCs). CD90 is considered as a potential normal stem cell and CSCs biomarker and also has been identified in lung cancer stem cells, hepatocellular carcinoma cells and high-grade gliomas. Using eukaryotic host systems involves complex procedures and frequently results in low protein yields. The expression of recombinant proteins in Escherichia coli is comparatively easier than eukaryotic host cells...
December 2015: Protein Expression and Purification
Ramona Dadu, Mimi I Hu, Charles Cleeland, Naifa L Busaidy, Mouhammed Habra, Steven G Waguespack, Steven I Sherman, Anita Ying, Patricia Fox, Maria E Cabanillas
INTRODUCTION: Medullary thyroid cancer (MTC)-related diarrhea can be debilitating, reduces quality of life (QOL), and may be the only indication for initiating systemic therapy. Conventional antidiarrheal drugs are not always helpful and may have side effects. Calcium aluminosilicate antidiarrheal (CASAD), a natural calcium montmorrilonite clay, safely adsorbs toxins and inflammatory proteins associated with diarrhea. It was hypothesized that CASAD would reduce the severity of diarrhea and improve QOL in MTC patients...
October 2015: Thyroid: Official Journal of the American Thyroid Association
Yu-Ching Chen, Tsung-Lin Tsai, Xin-Hong Ye, Thy-Hou Lin
The antimicrobial and anticancer activities of an antimicrobial peptide (AMP) KL15 obtained through in silico modification on the sequences of 2 previously identified bacteriocins m2163 and m2386 from Lactobacillus casei ATCC 334 by us have been studied. While significant bactericidal effect on the pathogenic bacteria Listeria, Escherichia, Bacillus, Staphylococcus, Enterococcus is exerted by KL15, the AMP can also kill 2 human adenocarcinoma cells SW480 and Caco-2 with measured IC50 as 50 μg/ml or 26.3 μM...
2015: Cancer Biology & Therapy
Claude M Mfunyi, Myriam Vaillancourt, Julien Vitry, Thy-René Nsimba Batomene, Alma Posvandzic, Alexandra A Lambert, Caroline Gilbert
Exosomes are extracellular vesicles (EVs) that play a role in intercellular communication. Stimulation of dendritic cells by the HIV-1 virus triggers their release. HIV-1 binds to dendritic cells via dendritic cell immunoreceptor (DCIR). This study shows that inhibiting the binding to DCIR significantly decreases exosome release by HIV-1-pulsed dendritic cells. In addition, exosome release from Raji-CD4 expressing DCIR cells stimulated by anti-DCIR or HIV-1 is decreased when the immunoreceptor tyrosine-based inhibition motif (ITIM) signaling motif of DCIR is mutated...
October 2015: Virology
Pei-Rong Wang, Hiroshi Kitamura, Akira Shimizu, Nobuaki Yamanaka
BACKGROUND/AIMS: Immunologically and hemodynamically mediated the destruction of glomerular architecture is thought to be the major causes of end-stage renal failure. The purpose of this study is to evaluate the effect of glomerular hypertension on glomerular injury and the progression of glomerular sclerosis after Thy-1 nephritis was induced. METHOD: Thy-1 nephritis was induced in the stroke-prone spontaneously hypertensive rat strain (SHR-SP) (group SP) and in age-matched Wistar-Kyoto (WKY) (group WKY) rats, following unilateral nephrectomy (UNX), and a vehicle was injected alone in UNX SHR-SP as control (group SC)...
2015: Kidney & Blood Pressure Research
Daniel Mathias, Ronald E J Mitchel, Mirela Barclay, Heather Wyatt, Michelle Bugden, Nicholas D Priest, Stewart C Whitman, Markus Scholz, Guido Hildebrandt, Manja Kamprad, Annegret Glasow
Epidemiological studies indicate long-term risks of ionizing radiation on the heart, even at moderate doses. In this study, we investigated the inflammatory, thrombotic and fibrotic late responses of the heart after low-dose irradiation (IR) with specific emphasize on the dose rate. Hypercholesterolemic ApoE-deficient mice were sacrificed 3 and 6 months after total body irradiation (TBI) with 0.025, 0.05, 0.1, 0.5 or 2 Gy at low (1 mGy/min) or high dose rate (150 mGy/min). The expression of inflammatory and thrombotic markers was quantified in frozen heart sections (CD31, E-selectin, thrombomodulin, ICAM-1, VCAM-1, collagen IV, Thy-1, and CD45) and in plasma samples (IL6, KC, MCP-1, TNFα, INFγ, IL-1β, TGFβ, INFγ, IL-10, sICAM-1, sE-selectin, sVCAM-1 and fibrinogen) by fluorescence analysis and ELISA...
2015: PloS One
Yoshiki Higashijima, Tetsuhiro Tanaka, Junna Yamaguchi, Shinji Tanaka, Masaomi Nangaku
Dipeptidyl peptidase (DPP)-4 is an enzyme that cleaves and inactivates incretin hormones capable of stimulating insulin secretion from pancreatic β-cells. DPP-4 inhibitors are now widely used for the treatment of type 2 diabetes. Experimental studies have suggested a renoprotective role of DPP-4 inhibitors in various models of diabetic kidney disease, which may be independent of lowering blood glucose levels. In the present study, we examined the effect of DPP-4 inhibitors in the rat Thy-1 glomerulonephritis model, a nondiabetic glomerular injury model...
April 15, 2015: American Journal of Physiology. Renal Physiology
Daiju Ichikawa, Masanao Asano, Susan A Shinton, Joni Brill-Dashoff, Anthony M Formica, Anna Velcich, Richard R Hardy, Kyoko Hayakawa
Expression of a germline VH3609/D/JH2 IgH in mice results in the generation of B1 B cells with anti-thymocyte/Thy-1 glycoprotein autoreactivity by coexpression of Vk21-5/Jk2 L chain leading to production of serum IgM natural autoantibody. In these same mice, the marginal zone (MZ) B cell subset in spleen shows biased usage of a set of Ig L chains different from B1 B cells, with 30% having an identical Vk19-17/Jk1 L chain rearrangement. This VH3609/Vk19-17 IgM is reactive with intestinal goblet cell granules, binding to the intact large polymatrix form of mucin 2 glycoprotein secreted by goblet cells...
January 15, 2015: Journal of Immunology: Official Journal of the American Association of Immunologists
Dapeng Chen, Ying Li, Yan Mei, Wenjia Geng, Jurong Yang, Quan Hong, Zhe Feng, Guangyan Cai, Hanyu Zhu, Suozhu Shi, Xue-Yuan Bai, Xiangmei Chen
The main pathological characteristic of glomerulonephritis is diffuse mesangial cell proliferation. MiR-34a is associated with the proliferation of various organs and cancer cells. However, the role of miR-34a in renal proliferation diseases is not clear. Therefore, this study aimed to elucidate the mechanism of miR-34a in the regulation of renal mesangial cell proliferation. The miR-34a expression level at different time points in an anti-Thy1 mesangial proliferative nephritis rat model was determined by qRT-PCR...
October 2014: Cellular and Molecular Life Sciences: CMLS
Carlos Martínez-Moreno, Alexis Andres, Daniel Giterman, Edward Karpinski, Steve Harvey
Retinal ganglion cells (RGCs) have been shown to be sites of growth hormone (GH) production and GH action in the embryonic (embryo day 7, ED7) chick neural retina. Primary RGC cell cultures were previously used to determine autocrine or paracrine actions of GH in the retina, but the antibody used in their immunopanning (anti-Thy-1) is no longer available. We have therefore characterized an immortalized neural retina (QNR/D) cell line derived from ED7 embryonic quail as a replacement experimental model. These cells express the GH gene and have GH receptor (GHR)-immunoreactivity...
January 1, 2014: General and Comparative Endocrinology
Hua Liu, Xin-Ping Zhang, Zhu-Wen Yi
OBJECTIVE: The effects of inhibition of monocyte chemoattractant protein-1 (MCP-1) on a rat model of mesangial proliferative glomerulonephritis (MsPGN) were evaluated. METHODS: The anti-Thy-1 MsPGN model was developed by intravenously injecting anti-Thy-1 monoclonal antibodies into rats, followed by an injection of mesangial cells transfected with antisense MCP-1 into the renal artery. Exogenous cells were detected by in situ hybridization. Rats (40 total) were randomly divided into five groups: SO (sham operation), TG (Thy-1 glomerulonephritis model), MC (non-transfected normal rat mesangial cell), BC (pLXSN empty vector or blank control), and AM (antisense MCP-1 transfection) groups...
2013: Renal Failure
Chie Kato, Atsuhiko Kato, Kenji Adachi, Etsuko Fujii, Kaori Isobe, Tomochika Matsushita, Takeshi Watanabe, Masami Suzuki
Some therapeutic antibodies as anticancer agents exert their effects through the host immune system, but the factors that predict their cytotoxicity, including complement-dependent cytotoxicity (CDC), are unclear. In the present study, we attempted to elucidate some of these factors in a preclinical model. CDC-related mesangiolysis caused by administration of the anti-Thy-1.1 antibody can be studied in the rat anti-Thy-1 glomerulonephritis model, so the model was used in this study. Three animals each were sacrificed at 0...
March 2013: Journal of Toxicologic Pathology
Atsuhiko Ichimura, Sachiko Matsumoto, Shinobu Suzuki, Takashi Dan, Satoshi Yamaki, Yayoi Sato, Hideyasu Kiyomoto, Naoto Ishii, Kiyotaka Okada, Osamu Matsuo, Fan-Fan Hou, Douglas E Vaughan, Charles van Ypersele de Strihou, Toshio Miyata
OBJECTIVE: Macrophage (Mϕ) migration rests on the adhesion/detachment between Mϕ surface components and extracellular matrixes, and the contribution of numerous inflammatory disorders. Plasminogen activator inhibitor (PAI)-1, a serine protease inhibitor, influences Mϕ motility through an action distinct from its classical modulation of the plasmin-based fibrinolytic process. We rely here on a small molecule PAI-1 inhibitor (TM5275) to investigate the role of PAI-1 in Mϕ migration in the pathogenesis of renal injury...
May 2013: Arteriosclerosis, Thrombosis, and Vascular Biology
Bagher Minaee Zanganeh, Tayebeh Rastegar, Mehryar Habibi Roudkenar, Iraj Ragerdi Kashani, Fardin Amidi, Farid Abolhasani, Mohammad Barbarestani
Spermatogonial stem cells (SSCs) maintain spermatogenesis throughout life in the male. Maintenance of SSCs and induction of spermiogenesis in vitro may provide a therapeutic strategy to treat male infertility. This study investigated in vitro differentiation of mouse SSCs in presence or absence of Sertoli cells, hormones and vitamins. Spermatogonial populations were enriched from testes of 4-6 week old males by magnetic activated cell sorting and anti-Thy-1 antibody. Sertoli cells isolated from 6-8 week old testes were enriched using lectin-DSA-coated plates...
2013: Acta Medica Iranica
Martina Mihalj, Zoltán Kellermayer, Peter Balogh
Although a substantial number of T cells may escape depletion following in vivo mAb treatment in patients undergoing immunosuppression, their specific tissue location and phenotypic characteristics in different peripheral lymphoid tissues have not been analyzed in detail. Here we investigated the survival of CD4(+) T cells immediately following anti-Thy-1 mAb treatment in mice. We found a preferential survival of CD4(+) T cells expressing Thy-1 antigen in the Peyer's patches (PP) and also in mesenteric lymph nodes (MLN), where the relative majority of the surviving CD4(+) T cells displayed CD44(high)/CD62L(-) phenotype corresponding to effector memory T-cell features...
July 2013: International Immunology
M Hisada, Y Ota, X Zhang, A M Cameron, B Gao, R A Montgomery, G M Williams, Z Sun
Livers from Lewis rats fed with 7% alcohol for 5 weeks were used for transplantation. Reduced sized (50%) livers or whole livers were transplanted into normal DA recipients, which, in this strain combination, survive indefinitely when the donor has not been fed alcohol. However, none of the rats survived a whole fatty liver transplant while six of seven recipients of reduced sized alcoholic liver grafts survived long term. SDF-1 and HGF were significantly increased in reduced size liver grafts compared to whole liver grafts...
December 2012: American Journal of Transplantation
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