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Journal of Molecular Histology

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https://read.qxmd.com/read/30671880/melatonin-preconditioning-of-bone-marrow-derived-mesenchymal-stem-cells-promotes-their-engraftment-and-improves-renal-regeneration-in-a-rat-model-of-chronic-kidney-disease
#1
Kamran Saberi, Parichehr Pasbakhsh, Ameneh Omidi, Maryam Borhani-Haghighi, Saeid Nekoonam, Negar Omidi, Sodabeh Ghasemi, Iraj Ragerdi Kashani
Bone marrow-derived mesenchymal stem cells (BMMSCs) transplantation has shown to be effective in treating chronic kidney disease. However, the effectiveness of this strategy is constrained by low homing and survival rate of transplanted cells in the injured organs. Therefore, developing strategies to improve homing and cell survival rate and therapeutic potential in cell-based therapies seems necessary. The purpose of this study is to evaluate the effect of pretreating BMMSCs with melatonin (MT) on the prosurvival and renoprotective of transplanted cells into the irreversible model of unilateral ureteral obstruction...
January 22, 2019: Journal of Molecular Histology
https://read.qxmd.com/read/30671879/the-histone-deacetylase-class-i-ii-inhibitor-trichostatin-a-delays-peripheral-neurodegeneration
#2
Muwoong Kim, Chan Park, Junyang Jung, Seung Geun Yeo
Peripheral nerves, which consist of an axon and a unique glial cell called a Schwann cell, transduce signals from the brain and spinal cord to target organs. Peripheral nerve degeneration leads to distal motor or sensory disorders such as diabetic neuropathy, Charcot-Marie-Tooth disease, and Gullain-Barré syndrome, with symptoms such as dysesthesia, speech impairment, vision change, erectile dysfunction, and urinary incontinence. Schwann cells play an important role in peripheral nerve degeneration. Therefore, revealing the characteristics of Schwann cells will be essential in understanding peripheral neurodegeneration-related diseases for which there is currently no effective treatment...
January 22, 2019: Journal of Molecular Histology
https://read.qxmd.com/read/30659402/site-specific-expression-of-iqgap1-in-human-nephrons
#3
Ping Wang, Xiaojie Gong, Peizhong Guan, Dong Ji, Linna Du, Dongmei Xu, Yipeng Liu
IQGAP1 is a multifunctional, 190-kDa scaffolding protein that plays an important role in the regulation of cell adhesion, migration, proliferation, differentiation, polarization and cytoskeletal remodeling. IQGAP1 is ubiquitously expressed in human organs and is highly expressed in the kidney. Currently, the site-specific expression of IQGAP1 in the human nephrons is unclear. We performed Western blotting analysis, immunohistochemistry and double-immunolabeling confocal microscopic analysis of IQGAP1 with specific biomarkers of each nephron segment to study the expression and distribution of IQGAP1 in human nephrons...
January 19, 2019: Journal of Molecular Histology
https://read.qxmd.com/read/30659401/mapping-the-sites-of-localization-of-epithelial-sodium-channel-enac-and-cftr-in-segments-of-the-mammalian-epididymis
#4
Sachin Sharma, Israel Hanukoglu
The sperm produced in the seminiferous tubules pass through the rete testis, efferent ducts, and epididymis. The epididymis has three distinct regions known as caput, corpus, and cauda. The transit through the epididymis is an essential process in sperm maturation. The lumen of each epididymal region has a unique fluid composition regulated by many ion channels and transporters in the epithelial cells. The objective of this study was to map the sites of localization of ion channels ENaC and CFTR along the length of the mouse and rat epididymis using confocal microscopic imaging...
January 18, 2019: Journal of Molecular Histology
https://read.qxmd.com/read/30635760/osteogenic-and-angiogenic-characterization-of-mandible-and-femur-osteoblasts
#5
Xue Yang, Jun Jiang, Ling Zhou, Song Wang, Mengjiao He, Kai Luo, Yuling Chen, Xiongcheng Xu
Craniofacial autologous bone grafts offer superior outcomes to long bone grafts in the reconstruction of maxillofacial bone defects, but the mechanism responsible for this superiority has not yet been illustrated clearly. Osteoblasts play vital roles in bone development and regeneration. However, presently, only a few studies have compared the osteogenic ability of osteoblasts from craniofacial and long bones, and the results are contradictory. Additionally, the angiogenic characteristics of osteoblasts from these different bones remain unknown...
January 11, 2019: Journal of Molecular Histology
https://read.qxmd.com/read/30604255/sepsis-related-myocardial-injury-is-associated-with-mst1-upregulation-mitochondrial-dysfunction-and-the-drp1-f-actin-signaling-pathway
#6
Xiuling Shang, Jun Li, Rongguo Yu, Pengli Zhu, Yingrui Zhang, Jingqing Xu, Kaihua Chen, Min Li
LPS-induced septic cardiomyopathy has been found to be connected with mitochondrial stress through unknown mechanisms. Mitochondrial fission is an early event in mitochondrial dysfunction. The aim of our study was to determine the role and regulatory mechanism of mitochondrial fission in the progression of LPS-induced septic cardiomyopathy, with a particular focus on Mst1 and F-actin. Our data demonstrated that Mst1 expression was rapidly upregulated in LPS-treated hearts and that increased Mst1 promoted cardiomyocyte death by inducing mitochondrial stress...
January 2, 2019: Journal of Molecular Histology
https://read.qxmd.com/read/30604254/autophagy-promotes-hepatic-differentiation-of-hepatic-progenitor-cells-by-regulating-the-wnt-%C3%AE-catenin-signaling-pathway
#7
Zhenzeng Ma, Fei Li, Liuying Chen, Tianyi Gu, Qidi Zhang, Ying Qu, Mingyi Xu, Xiaobo Cai, Lungen Lu
Hepatic progenitor cells (HPCs) can be activated when the liver suffers persistent and severe damage and can differentiate into hepatocytes to maintain liver regeneration and homeostasis. However, the molecular mechanism underlying the hepatic differentiation of HPCs is unclear. Therefore, in this study, we aimed to investigate the roles of autophagy and the Wnt/β-catenin signaling pathway during hepatic differentiation of HPCs in vivo and in vitro. First, immunohistochemistry, immunofluorescence and electron microscopy showed that Atg5 and β-catenin were highly expressed in human fibrotic liver and mouse liver injury induced by feeding a 50% choline-deficient diet plus 0...
January 2, 2019: Journal of Molecular Histology
https://read.qxmd.com/read/30519900/distinctive-role-of-acvr1-in-dentin-formation-requirement-for-dentin-thickness-in-molars-and-prevention-of-osteodentin-formation-in-incisors-of-mice
#8
Xue Zhang, Ce Shi, Huan Zhao, Yijun Zhou, Yue Hu, Guangxing Yan, Cangwei Liu, Daowei Li, Xinqing Hao, Yuji Mishina, Qilin Liu, Hongchen Sun
Dentin is a major component of teeth that protects dental pulp and maintains tooth health. Bone morphogenetic protein (BMP) signaling is required for the formation of dentin. Mice lacking a BMP type I receptor, activin A receptor type 1 (ACVR1), in the neural crest display a deformed mandible. Acvr1 is known to be expressed in the dental mesenchyme. However, little is known about how BMP signaling mediated by ACVR1 regulates dentinogenesis. To explore the role of ACVR1 in dentin formation in molars and incisors in mice, Acvr1 was conditionally disrupted in Osterix-expressing cells (designated as cKO)...
December 5, 2018: Journal of Molecular Histology
https://read.qxmd.com/read/30511172/periodontal-ligament-associated-protein-1-gets-involved-in-the-development-of-osseous-eruption-canal
#9
Xijiao Yu, Hongmei Liu, Chong Li, Yanmei Du, Yi Du, Shanyong Zhang
Osseous eruption is an important stage of tooth eruption process. The role of periodontal ligament-associated protein-1 (PLAP-1/asporin) in the development of osseous eruption canal remain undefined and were the focus of this study. C57BL/6 mice at postnatal days P11-13 and P 15-16 were chosen. The development of osseous eruption canal of lower first molar was observed and osteoclasts were detected by staining for tartrate-resistant acid phosphatase (TRAP). PLAP-1 expression in the process of osseous eruption (OE, P11-13) and post- osseous eruption (P-OE, P15-16) was assessed by immunohistochemistry, immunofluorescence and western blotting...
December 3, 2018: Journal of Molecular Histology
https://read.qxmd.com/read/30498999/the-inhibition-of-glycosaminoglycan-incorporation-influences-the-cell-proliferation-and-cytodifferentiation-in-cultured-embryonic-mouse-molars
#10
Beizhan Jiang, Fangfang Xu, Lefeng Li, Weiting Chen, Shebin Hong, Rongmei Chen
The extracellular matrix (ECM) contains a variety of complex macromolecules including proteoglycans (PGs) and glycosaminoglycans (GAGs). PG consists of a protein core with covalently attached carbohydrate side chains called GAGs. Several PGs, including versican, biglycan, decorin and syndecan are involved in odontogenesis while the role of GAGs in those PGs in this process remains unclarified. The purpose of this study was to investigate the influence of GAGs on tooth development. The mandibular first molars at early bell stage were cultivated with or without 4-methylumbelliferyl-β-D-xyloside (Xyl-MU)...
November 29, 2018: Journal of Molecular Histology
https://read.qxmd.com/read/30535733/subcellular-localization-of-sterol-biosynthesis-enzymes
#11
Katalin Koczok, Channabasavaiah B Gurumurthy, István Balogh, Zeljka Korade, Károly Mirnics
Cholesterol synthesis is a complex, coordinated process involving a series of enzymes. As of today, our understanding of subcellular localization of cholesterol biosynthesis enzymes is far from complete. Considering the complexity and intricacies of this pathway and the importance of functions of DHCR7, DHCR24 and EBP enzymes for human health, we undertook a study to determine their subcellular localization and co-localization. Using expression constructs and antibody staining in cell cultures and transgenic mice, we found that all three enzymes are expressed in ER and nuclear envelope...
February 2019: Journal of Molecular Histology
https://read.qxmd.com/read/30317407/favorable-outcomes-of-metformin-on-coronary-microvasculature-in-experimental-diabetic-cardiomyopathy
#12
Ahmed A M Abdel-Hamid, Alaa El-Din L Firgany
Although metformin is widely prescribed in diabetes, its use with associated cardiac dysfunction remains debatable. In the current study, we investigated the effect of metformin on coronary microvasculature in experimental diabetic cardiomyopathy (DCM) induced by streptozotocin. Administration of metformin after induction of DCM, reversed almost all cardiomyocyte degenerative changes induced by DCM. Metformin diminished the significantly increased (p < 0.05) collagen deposited in the DCM. In addition metformin had improved the density of the significantly decreased arteriolar (αSMA+ ) and capillary (CD31+ ) coronary microvasculature compared to that of the DCM and non-diabetics (ND) with downregulation of the significantly increased expression (p < 0...
December 2018: Journal of Molecular Histology
https://read.qxmd.com/read/30306356/electron-microscopic-study-of-golgi-impregnated-and-gold-toned-neurons-and-fibers-in-the-claustrum-of-the-cat
#13
Dimka Hinova-Palova, Alexandar Iliev, Lawrence Edelstein, Boycho Landzhov, Georgi Kotov, Adrian Paloff
The claustrum is a subcortical nucleus found in the telencephalon of all placental mammals. It is a symmetrical, thin and irregular sheet of grey matter which lies between the inner surface of the insular cortex and the outer surface of the putamen. The claustrum has extensive connections with the visual, auditory, somatosensory and motor regions of the cortex, as well as with subcortical and allocortical regions. The aim of this study was to provide a detailed description of the morphology of different types of Golgi-impregnated and gold-toned neurons and fibers in the dorsal claustrum of the cat employing the combined Golgi-electron microscope Fairén method...
December 2018: Journal of Molecular Histology
https://read.qxmd.com/read/30302594/first-ovarian-response-to-gonadotrophin-stimulation-in-rats-exposed-to-neonatal-androgen-excess
#14
Rebeca Chávez-Genaro, Gabriel Anesetti
This study analyzes the effects of neonatal androgenization on follicular growth and first ovulation in response to gonadotrophins, using a model of exogenous stimulation or the use of subcutaneous ovary grafts in castrated animals to replace the hypothalamus-pituitary signal. Neonatal rats (days 1-5) were treated with testosterone, dihydrotestosterone or vehicle. At juvenile period, rats were stimulated with PMSG, hCG (alone or combined) or used as ovarian donors to be grafted on castrated adult female rats...
December 2018: Journal of Molecular Histology
https://read.qxmd.com/read/30298449/nur77-promotes-cerebral-ischemia-reperfusion-injury-via-activating-inf2-mediated-mitochondrial-fragmentation
#15
Hao Zhao, Wenlong Pan, Lihua Chen, Yongchun Luo, Ruxiang Xu
Mitochondrial fragmentation drastically regulates mitochondrial homeostasis in brain illness. However, the role of mitochondrial fragmentation in cerebral ischemia-reperfusion (IR) injury remains unclear. Nur77, a regulator of mitochondrial homeostasis, is associated with heart and liver IR injury, but its effects on mitochondrial function in cerebral IR injury has not been studied intensively. The aim of our study is to explore whether cerebral IR injury is modulated by Nur77 via modification of mitochondrial homeostasis...
December 2018: Journal of Molecular Histology
https://read.qxmd.com/read/30298448/decreased-autophagy-was-implicated-in-the-decreased-apoptosis-during-decidualization-in-early-pregnant-mice
#16
Qiutong Chen, Rufei Gao, Yanqing Geng, Xuemei Chen, Xueqing Liu, Lei Zhang, Xinyi Mu, Yubin Ding, Yingxiong Wang, Junlin He
Folate deficiency is a major risk factor of birth defects. Mechanistic studies on folate deficiency resulting in birth defects have mainly focused on fetal development. There have been few studies on folate deficiency from the point of view of the mother's uterus. In our previous study, we demonstrated that folate deficiency inhibits apoptosis of decidual cells, thereby restraining decidualization of the endometrium and impairing pregnancy. In this study, we further investigated the potential mechanism by which folate deficiency decreases endometrial apoptosis during decidualization...
December 2018: Journal of Molecular Histology
https://read.qxmd.com/read/30251185/mechanism-of-fibrogenesis-in-submandibular-glands-in-patients-with-igg4-rd
#17
Ryoto Yajima, Kenichi Takano, Takumi Konno, Takayuki Kohno, Yakuto Kaneko, Takuya Kakuki, Kazuaki Nomura, Akito Kakiuchi, Tetsuo Himi, Takashi Kojima
The aim of this study was to investigate the mechanisms driving fibrosis in the submandibular glands (SMG) of patients with IgG4-related disease (IgG4-RD). Immunohistochemistry showed that many fibroblast-like cells expressing IL-6, IL-18, TSLP, IL-33, and MMP1 were present in SMG from the affected patients. SMG fibroblasts were derived from patients with or without IgG4-RD and were cultured in vitro. Expression of IL-6, IL-18, TSLP, IL-33 and MMP1, the secretion of IL-6 and G2/M phase were upregulated in the fibroblasts from the affected patients...
December 2018: Journal of Molecular Histology
https://read.qxmd.com/read/30238337/time-course-of-differentiation-of-different-cell-types-in-3d-reconstructed-eccrine-sweat-glands
#18
Mingjun Zhang, Haihong Li, Sitian Xie, Liyun Chen
Epidermal basal cells invaginate into the dermis to form sweat ducts, which then grow downwards further to form secretory coils during the ontogenesis of eccrine sweat glands, but the time course of differentiation of different cell types in 3D-reconstructed eccrine sweat glands remain unclear. In this study, secretory cell-specific marker K7, clear secretory cell-specific marker CA II, dark secretory cell-specific marker GCDFP-15, myoepithelial cell-specific marker α-SMA, inner duct cell-specific marker S100P and outer duct cell-specific marker S100A2 were detected by immunofluorescence staining...
December 2018: Journal of Molecular Histology
https://read.qxmd.com/read/30225683/chrysin-attenuates-interstitial-fibrosis-and-improves-cardiac-function-in-a-rat-model-of-acute-myocardial-infarction
#19
Mei Yang, Jun Xiong, Qiang Zou, Dan-Dan Wang, Cong-Xin Huang
Interstitial fibrosis after acute myocardial infarction (MI) leads to cardiac structural remodeling and dysfunction. The peroxisome proliferator-activated receptor-gamma (PPAR-γ) agonist chrysin has been shown to protect injured myocardium through suppression of oxidative stress and inflammation. This study was designed to investigate the effect and mechanism of chrysin on myocardial fibrosis. A rat MI model was created by ligating the left coronary artery. The rats with MI were treated with chrysin (40 mg/kg/day) or 0...
December 2018: Journal of Molecular Histology
https://read.qxmd.com/read/30430402/hormonal-control-of-vas-deferens-fluid-volume-and-aquaporin-expression-in-rats
#20
Nur Siti Khadijah Ramli, Nelli Giribabu, Kamarulzaman Karim, Naguib Salleh
Precise regulation of vas deferens fluid volume which is important for sperm survival might be influenced by testosterone. In order to investigate changes in vas deferens fluid volume and aquoporins (AQP) isoforms expression under testosterone influence, orchidectomized Sprague-Dawley rats were given 125 and 250 µg/kg/day testosterone with or without flutamide, an androgen receptor blocker or finasteride, a 5alpha-reductase inhibitor for seven consecutive days. Following treatment completion, vas deferens was perfused and changes in the fluid secretion rate and osmolality were determined in the presence of acetazolamide...
November 14, 2018: Journal of Molecular Histology
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