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Journal of Molecular Histology

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https://www.readbyqxmd.com/read/29330744/c-fos-downregulation-positively-regulates-epha5-expression-in-a-congenital-hypothyroidism-rat-model
#1
Honghua Song, Yuqin Zheng, Fuying Cai, Yanyan Ma, Jingyue Yang, Youjia Wu
The EphA5 receptor is well established as an axon guidance molecule during neural system development and plays an important role in dendritic spine formation and synaptogenesis. Our previous study has showed that EphA5 is decreased in the developing brain of congenital hypothyroidism (CH) and the EphA5 promoter methylation modification participates in its decrease. c-Fos, a well-kown transcription factor, has been considered in association with brain development. Bioinformatics analysis showed that the EphA5 promoter region contained five putative c-fos binding sites...
January 12, 2018: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29330743/acute-downregulation-of-mir-155-leads-to-a-reduced-collagen-synthesis-through-attenuating-macrophages-inflammatory-factor-secretion-by-targeting-ship1
#2
Longlong Yang, Lingying Liu, Huinan Ying, Yonghui Yu, Donghai Zhang, Huping Deng, Haijun Zhang, Jiake Chai
Fibrosis, tightly associated with fibroblasts collagen synthesis, is related closely with inflammatory response. Our previously study found that acute downregulation of miR-155 at wound sites leads to a reduced fibrosis, however its particular mechanism is unclear. Herein, we aimed to explore the mechanism of miR-155 in reducing fibrosis. We first found that down-regulation of miR-155 inhibited macrophages transforming growth factor-β1 (TGF-β1) and IL-1β secretion. Next, we found that co-cultured with macrophages increased the proliferation and collagen synthesis of fibroblasts, and downregulation of miR-155 in macrophages could effectively attenuate the accelerative effects...
January 12, 2018: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29318411/cyclophilin-a-increases-cd68-cell-infiltration-in-rat-experimental-periodontitis
#3
Lande Xue, Linwang Su, Li Zhao, Jianxia Li, Yi Du, Xijiao Yu
Cyclophilin A (CyPA) is a potent chemokine, which can directly induce leukocyte chemotaxis and contribute to the pathogenesis of inflammation-mediated diseases. This study is to observe the expression and distribution of CyPA and CD68+ cells in the histopathogenesis of rat ligation-induced experimental periodontitis, and assess the role of CyPA in CD68+ cell infiltration in rat experimental periodontitis. Experimental periodontitis was induced by ligation according to our previous method. CyPA expression in gingival tissues was detected by western blotting...
January 9, 2018: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29302763/reduced-myofilament-component-in-primary-sj%C3%A3-gren-s-syndrome-salivary-gland-myoepithelial-cells
#4
Margherita Sisto, Loredana Lorusso, Giuseppe Ingravallo, Roberto Tamma, Beatrice Nico, Domenico Ribatti, Simona Ruggieri, Sabrina Lisi
Primary Sjögren's syndrome (pSS) is a solitary poorly understood autoimmune inflammatory disease by involvement of the salivary and lacrimal glands resulting in dry mouth and dry eyes. Myoepithelial cells (MECs) are cells knowing for its hybrid epithelial and mesenchymal phenotype that are important components of the salivary gland (SGs) structure aiding the expulsion of saliva from acinar lobules. In this study we investigate possible alteration in the myofilament component of MECs in SGs specimens obtained from pSS patients in comparison with healthy subjects, to evaluate MECs hypothetical involvement in the pathogenesis of pSS...
January 4, 2018: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29260435/role-of-serotonin-in-the-intestinal-mucosal-epithelium-barrier-in-weaning-mice-undergoing-stress-induced-diarrhea
#5
Yulan Dong, Zixu Wang, Zhuoming Qin, Jing Cao, Yaoxing Chen
Stress-induced diarrhea is a frequent and challenging threat to humans and domestic animals. Serotonin (5-HT) has been shown to be involved in the pathological process of stress-induced diarrhea. However, the role of 5-HT in stress-induced diarrhea remains unclear. A stress-induced diarrhea model was established in 21-day-old ICR weaning mice through an intragastric administration of 0.25 mL of 0.4 g/mL folium sennae and restraint of the hind legs with adhesive tape for 4 h to determine whether 5-HT regulates the mucosal barrier to cause diarrhea...
December 19, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29243095/ca2-camkk%C3%AE-pathway-is-required-for-adiponectin-induced-secretion-in-rat-submandibular-gland
#6
Chong Ding, Zhi-Hao Du, Sheng-Lin Li, Li-Ling Wu, Guang-Yan Yu
Adiponectin functions as a promoter of saliva secretion in rat submandibular gland via activation of adenosine monophosphate-activated protein kinase (AMPK) and increased paracellular permeability. Ca2+ mobilization is the primary signal for fluid secretion in salivary acinar cells. However, whether intracellular Ca2+ mobilization is involved in adiponectin-induced salivary secretion is unknown. Here, we found that full-length adiponectin (fAd) increased intracellular Ca2+ and saliva secretion in submandibular glands...
December 14, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29224185/tension-force-induced-bone-formation-in-orthodontic-tooth-movement-via-modulation-of-the-gsk-3%C3%AE-%C3%AE-catenin-signaling-pathway
#7
Yelin Mao, Liangliang Wang, Ye Zhu, Yu Liu, Hongwei Dai, Jianping Zhou, Dechun Geng, Lin Wang, Yong Ji
Orthodontic force-induced osteogenic differentiation and bone formation at tension sites play a critical role in orthodontic tooth movement. However, the molecular mechanism underlying this phenomenon is poorly understood. In the current study, we investigated the involvement of the GSK-3β/β-catenin signaling pathway, which is critical for bone formation during tooth movement. We established a rat tooth movement model to test the hypothesis that orthodontic force may stimulate bone formation at the tension site of the moved tooth and promote the rate of tooth movement via regulation of the GSK-3β/β-catenin signaling pathway...
December 9, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29214501/mouse-embryonic-fibroblast-mef-bmp4-conditioned-medium-enhanced-multipotency-of-human-dental-pulp-cells
#8
Lu Liu, Zhengjun Peng, Zhezhen Xu, Haoquan Huang, Xi Wei
Dental pulp cells (DPCs) are valuable cell source for dental regeneration, albeit their application is restricted by limited pluripotency due to current culture condition. Mouse embryonic fibroblasts (MEFs) are served as feeder layer to maintain undifferentiated state of iPSCs and ESCs with long-term in vitro culture. Bone morphogenetic protein 4 (BMP4) plays an important role in the regulation of undifferentiated state and lineage commitment of cells through modulation of microenvironment. However, so far little was known how micro environment affect the multipotency of dental derived cells...
December 6, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29209912/restoration-of-smn-expression-in-mesenchymal-stem-cells-derived-from-gene-targeted-patient-specific-ipscs
#9
Mai Feng, Cong Liu, Yan Xia, Bo Liu, Miaojin Zhou, Zhuo Li, Qianru Sun, Zhiqing Hu, Yanchi Wang, Lingqian Wu, Xionghao Liu, Desheng Liang
Spinal muscular atrophy (SMA) is primarily a neurodegenerative disease caused by the homozygous deletion of the survival motor neuron 1 (SMN1) gene, thereby reducing SMN protein expression. Mesenchymal stem cells (MSCs) have been implicated in the treatment of SMA. In the present study, we overexpressed exogenous SMN1 at the ribosomal DNA (rDNA) locus of induced pluripotent stem cells (iPSCs) generated from a SMA patient using an rDNA-targeting vector. The gene-targeted patient iPSCs differentiated into MSCs (SMN1-MSCs)...
December 5, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29196853/immunohistochemical-characterization-of-brush-cells-in-the-rat-larynx
#10
Yoshio Yamamoto, Yuko Ozawa, Takuya Yokoyama, Nobuaki Nakamuta
The immunohistochemical characteristics of brush cells in the laryngeal mucosa were examined using immunohistochemistry for various immunohistochemical cell markers including villin at the light and electron microscopic levels. Cells that were immunoreactive to villin were barrel-shaped with thick cytoplasmic processes extending toward the lumen of the laryngeal cavity. Immunoelectron microscopic observations revealed thick and short microvilli with long rootlets of microfilaments. Numerous small clear vesicles and small finger-like cytoplasmic processes were observed in the apical process and lateral membrane, respectively...
December 1, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29189956/changes-of-mitochondrial-respiratory-function-during-odontogenic-differentiation-of-rat-dental-papilla-cells
#11
Fuping Zhang, Liulin Jiang, Yifan He, Wenguo Fan, Xiaoyan Guan, Qianyi Deng, Fang Huang, Hongwen He
Dental papilla cells (DPCs) belong to precursor cells differentiating to odontoblasts and play an important role in dentin formation and reproduction. This study aimed to explore the changes and and involvement of mitochondrial respiratory function during odontogenic differentiation. Primary DPCs were obtained from first molar dental papilla of neonatal rats and cultured in odontogenic medium for 7, 14, 21 days. DPCs, which expressed mesenchymal surface markers CD29, CD44 and CD90, had the capacity for self-renewal and multipotent differentiation...
November 30, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29185229/overexpression-of-insulin-receptor-substrate-4-is-correlated-with-clinical-staging-in-colorectal-cancer-patients
#12
Patricia Sanmartín-Salinas, M Val Toledo-Lobo, Fernando Noguerales-Fraguas, María-Encarnación Fernández-Contreras, Luis G Guijarro
Insulin receptor substrate-4 (IRS-4), a poorly studied member of the IRS family, may play an important role in colorectal cancer (CRC) tumourigenesis. The aim of this pilot study was to elucidate the potential role of IRS-4 in colorectal carcinogenesis by evaluating IRS-4 expression in different types of colorectal tumours (n = 20) and comparing its expression to normal mucosa (n = 20). Tissue samples were collected from 18 patients with CRC and 2 with precancerous lesions (tubulovillous adenomas), all of whom were undergoing potentially curative surgery...
November 28, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29181608/immunolocalization-patterns-of-cytokeratins-during-salivary-acinar-cell-development-in-mice
#13
Nirpesh Adhikari, Sanjiv Neupane, Jiyeon Roh, Jong Hwa Jun, Jae-Kwang Jung, Wern-Joo Sohn, Jae-Young Kim, Ji-Youn Kim
Embryonic development of the mouse salivary glands begins with epithelial thickening and continues with sequential changes from the pre-bud to terminal bud stages. After birth, morphogenesis proceeds, and the glands develop into a highly branched epithelial structure that terminates with saliva-producing acinar cells at the adult stage. Acinar cells derived from the epithelium are differentiated into serous, mucous, and seromucous types. During differentiation, cytokeratins, intermediate filaments found in most epithelial cells, play vital roles...
November 27, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29119279/mechanical-stress-promotes-matrix-synthesis-of-mandibular-condylar-cartilage-via-the-rkip-erk-pathway
#14
Lian Sun, Jing Zhao, Hua Wang, Yongchu Pan, Lin Wang, Wei-Bing Zhang
Mandibular hypoplasia is a common jaw deformity that affects breathing, occlusal function and facial aesthetics. Stimulating mandibular condylar growing with functional appliances is an ordinary but controversial treatment method in orthodontics. Therefore, it is vital to clarify how functional appliances affect condylar growing. Raf-1 kinase inhibitor protein (RKIP), as an endogenous inhibitory molecule of the ERK signaling, is postulated to involve in stress-induced response to articular cartilage. This study was to reveal the role of RKIP in regulating cartilage matrix synthesis with functional appliance treatment...
December 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29094227/down-regulation-of-noggin-and-mir-138-coordinately-promote-osteogenesis-of-mesenchymal-stem-cells
#15
Xing-Kun Sun, Jin Zhou, Lei Zhang, Tian Ma, Yu-Han Wang, Yan-Mei Yang, Yan-Ting Tang, Hong Li, Li-Jun Wang
Mesenchymal stem cells (MSCs) can differentiate to osteocytes under suitable conditions. In recent years, micro-nucleotides have been progressively used to modulate gene expression in cells due to the consideration of safety. Our present study aimed to investigate whether co-delivery of Noggin-siRNA and antimiR-138 enhances the osteogenic effect of MSCs. Using a murine MSC line, C3H/10T1/2 cells, the delivery efficiency of Noggin-siRNA and antimiR-138 into MSCs was evaluated by quantitative real-time polymerase chain reaction (qRT-PCR)...
December 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29027601/dnmt1-dnmt3a-and-dnmt3b-proteins-are-differently-expressed-in-mouse-oocytes-and-early-embryos
#16
Fatma Uysal, Saffet Ozturk, Gokhan Akkoyunlu
DNA methylation is one of the epigenetic mechanisms and plays important roles during oogenesis and early embryo development in mammals. DNA methylation is basically known as adding a methyl group to the fifth carbon atom of cytosine residues within cytosine-phosphate-guanine (CpG) and non-CpG dinucleotide sites. This mechanism is composed of two main processes: de novo methylation and maintenance methylation, both of which are catalyzed by specific DNA methyltransferase (DNMT) enzymes. To date, six different DNMTs have been characterized in mammals defined as DNMT1, DNMT2, DNMT3A, DNMT3B, DNMT3C, and DNMT3L...
December 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28988314/the-prostate-response-to-prolactin-modulation-in-adult-castrated-rats-subjected-to-testosterone-replacement
#17
Flávia B Constantino, Ana C L Camargo, Sérgio A A Santos, Ketlin T Colombelli, Laura F Martin, Marcia G Silva, Sérgio L Felisbino, Luis A Justulin
Despite the androgenic dependence, other hormones, growth factors, and cytokines are necessary to support prostatic growth and maintain the glandular structure; among them, prolactin is a non-steroidal hormone secreted mainly by the pituitary gland. However, extra-pituitary expression of prolactin, such as in the prostate, has also been demonstrated, highlighting the paracrine and autocrine actions of prolactin within the prostate. Here, we investigated whether prolactin modulation alters ventral prostate (VP) morphophysiology in adult castrated rats...
December 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28986711/blockade-of-lgr4-inhibits-proliferation-and-odonto-osteogenic-differentiation-of-stem-cells-from-apical-papillae
#18
Meng Zhou, Shuyu Guo, Lichan Yuan, Yuxin Zhang, Mengnan Zhang, Huimin Chen, Mengting Lu, Jianrong Yang, Junqing Ma
During tooth root development, stem cells from apical papillae (SCAPs) are indispensable, and their abilities of proliferation, migration and odontoblast differentiation are linked to root formation. Leucine-rich repeat-containing GPCR 4 (LGR4) modulates the biological processes of proliferation and differentiation in multiple stem cells. In this study, we showed that LGR4 is expressed in all odontoblast cell lineage cells and Hertwig's epithelial root sheath (HERS) during the mouse root formation in vivo. In vitro we determined that LGR4 is involved in the Wnt/β-catenin signaling pathway regulating proliferation and odonto/osteogenic differentiation of SCAPs...
December 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28975535/spatiotemporal-expression-of-proprotein-convertase-subtilisin-kexin-type-5-in-the-development-of-anorectal-malformations-in-fetal-rats
#19
Xiao Bing Tang, Li Chen, Wei Lin Wang, Zheng Wei Yuan, Yu Zuo Bai
This study examined the expression patterns of proprotein convertase subtilisin/kexin type 5 (Pcsk5) during anorectal development in normal and anorectal malformations (ARM) rat embryos, determine the possible role of Pcsk5 in the pathogenesis of ARM. An ARM rat model was developed by the administration of ethylenethiourea gestational day 10 (GD10). Embryos were harvested by surgical excision from GD13 to GD16, and the spatiotemporal expression of Pcsk5 was evaluated, using immunohistochemistry staining, Western blotting and real time RT-PCR...
December 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28905239/expression-and-distribution-of-three-transient-receptor-potential-vanilloid-trpv-channel-proteins-in-human-odontoblast-like-cells
#20
Wen Wen, Kehua Que, Chengcheng Zang, Jing Wen, Guangxu Sun, Zhiying Zhao, Yanzhong Li
Odontoblasts have been suggested to contribute to nociceptive sensation in the tooth via expression of the transient receptor potential (TRP) channels. The TRP channels as a family of nonselective cation permeable channels play an important role in sensory transduction of human. In this study, we examined the expression of transient receptor potential vanilloid-1 (TRPV1), transient receptor potential vanilloid-2 (TRPV2) and transient receptor potential vanilloid-3 (TRPV3) channels in native human odontoblasts (HODs) and long-term cultured human dental pulp cells with odontoblast phenotyoe (LHOPs) obtained from healthy wisdom teeth with the use of immunohistochemistry (IHC), immunofluorescence (IF), quantitative real-time polymerase chain reaction (qRT-PCR),western blotting (WB) and immunoelectron microscopy (IEM) assay...
December 2017: Journal of Molecular Histology
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