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https://www.readbyqxmd.com/read/28815599/the-reduction-of-intraepidermal-p2x3-nerve-fiber-density-correlates-with-behavioral-hyperalgesia-in-a-rat-model-of-nerve-injury-induced-pain
#1
Malik Bechakra, Barthold N Schüttenhelm, Tiziana Pederzani, Pieter A van Doorn, Chris I de Zeeuw, Joost L M Jongen
Skin biopsies from patients with neuropathic pain often show changes in epidermal innervation, although it remains to be elucidated to what extent such changes can be linked to a particular subgroup of nerve fibers and how these changes are correlated with pain intensity. Here, we investigated to what extent behavioral signs of hyperalgesia are correlated with immunohistochemical changes of peptidergic and non-peptidergic epidermal nerve fibers in a rat model of nerve injury-induced pain. Rats subjected to unilateral partial ligation of the sciatic nerve developed significant mechanical and thermal hyperalgesia as tested by the withdrawal responses of the ipsilateral footpad to von Frey hairs and hotplate stimulation...
August 17, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28745805/tac-302-promotes-neurite-outgrowth-of-isolated-peripheral-neurons-and-prevents-bladder-denervation-related-bladder-dysfunctions-following-bladder-outlet-obstruction-in-rats
#2
Shohei Yoshida, Naoki Orimoto, Hiroshi Tsukihara, Takahisa Noma, Atsushi Hakozaki, Eiji Sasaki
AIMS: To evaluate the ability of TAC-302, a cyclohexenoic fatty alcohol derivative, to enhance neurite outgrowth in cultured rat dorsal root ganglion (DRG) neurons, and the preventive effects of TAC-302 on bladder denervation-related storage and voiding dysfunctions in rats with bladder outlet obstruction (BOO). METHODS: Rat DRG neurons were cultured in the presence of TAC-302. Cell numbers and neurite lengths were quantified after a 24 h culture. BOO was achieved by partial ligature of the proximal urethra in female rats...
July 26, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28708515/stage-specific-expression-of-sal-like-protein-4-in-boar-testicular-germ-cells
#3
Hyun-Jung Park, Ran Lee, Won-Young Lee, Jin-Hoi Kim, Jeong Tae Do, Chankyu Park, Hyuk Song
Spermatogenesis, the complex process of sperm cell development including mitotic cell division and meiosis, relies on spermatogonial stem cells (SSCs). While markers for developing germ cells have been well investigated in mice, developmental stage-specific markers of germ cells in domestic animals have not been identified. Sal-like protein 4 (SALL4) is known as a putative marker for undifferentiated spermatogonia in rodents; however, its expression in domestic animals has not been investigated. The objective of this study was to characterize the expression of SALL4 in the developmental stages of boar testes and SSCs...
June 16, 2017: Theriogenology
https://www.readbyqxmd.com/read/28668079/effects-of-bu-shen-yi-sui-capsule-on-nogoa-ngr-and-its-signaling-pathways-rhoa-rock-in-mice-with-experimental-autoimmune-encephalomyelitis
#4
Ling Fang, Yongqiang Wang, Qi Zheng, Tao Yang, Peiyuan Zhao, Hui Zhao, Qiuxia Zhang, Yuanyuan Zhao, Fang Qi, Kangning Li, Zhenzhen Chen, Junling Li, Nan Zhang, Yongping Fan, Lei Wang
BACKGROUND: Axon growth inhibitory factors NogoA/Nogo receptor (NgR) and its signaling pathways RhoA/Rho kinase (ROCK) play a critical role in the repair of nerve damage in multiple sclerosis (MS). Bu Shen Yi Sui Capsule (BSYSC) is an effective Chinese formula utilized to treat MS in clinical setting and noted for its potent neuroprotective effects. In this study, we focus on the effects of BSYSC on promoting nerve repair and the underlying mechanisms in mice with experimental autoimmune encephalomyelitis (EAE), an animal model of MS...
July 1, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28656682/mechanisms-of-pthrp-induced-inhibition-of-smooth-muscle-contractility-in-the-guinea-pig-gastric-antrum
#5
H Ohguchi, R Mitsui, K Imaeda, T Joh, H Hashitani
BACKGROUND: Parathyroid hormone-related protein (PTHrP) that causes hypercalcemia of malignancy appears to function as an endogenous smooth muscle relaxant. For example, PTHrP released upon bladder wall distension relaxes detrusor smooth muscle to accommodate urine. Here, we explored mechanisms underlying PTHrP-induced suppression of the smooth muscle contractility in the gastric antrum that also undergoes a passive distension. METHODS: Effects of PTHrP on phasic contractions and electrical slow waves in the antral smooth muscle of the guinea pig stomach were studied using isometric tension and intracellular microelectrode recordings, respectively...
June 28, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28627584/gastric-electrical-stimulation-improves-enteric-neuronal-survival
#6
Nian Wang, Kun Li, Shuangning Song, Jie Chen
Research and clinical experience with vagotomy have confirmed that damage to the central nervous system severely affects physiological movement in the gastrointestinal system. The aim of this study was to investigate the effects of synchronized dual-pulse gastric electrical stimulation (SGES) on the apoptosis of enteric neurons and the possible pathways involved in these effects in vagotomized rats. For this purpose, Male Sprague-Dawley (SD) rats were randomized into a control group, an early subdiaphragmatic vagotomized group (ESDV group), an early subdiaphragmatic vagotomized group with short-term SGES (ESDV + SSGES group), a terminal subdiaphragmatic vagotomized group (TSDV group) and a terminal subdiaphragmatic vagotomized group with long-term SGES (TSDV + LSGES group)...
June 14, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28598015/cutaneous-nerve-biomarkers-in-transthyretin-familial-amyloid-polyneuropathy
#7
Gigi J Ebenezer, Ying Liu, Daniel P Judge, Kelly Cunningham, Shaun Truelove, Noel D Carter, Blessan Sebastian, Kelly Byrnes, Michael Polydefkis
OBJECTIVE: To determine the utility of skin biopsies as a biomarker of disease severity in subjects with amyloid neuropathy. METHODS: Five groups of patients were studied: (1) transthyretin (TTR) familial amyloidotic polyneuropathy (FAP; n = 20), (2) TTR mutation carriers without peripheral neuropathy (TTR-noPN; n = 10), (3) healthy controls (n = 20), (4) diabetic neuropathy disease controls (n = 20), and (5) patients with light-chain (AL) amyloid (n = 2)...
July 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28465081/characterization-of-male-germ-cell-markers-in-canine-testis
#8
Won-Young Lee, Ran Lee, Hyun-Jung Park, Jeong Tae Do, Chankyu Park, Jin-Hoi Kim, Hyunjhung Jhun, Ji-Heon Lee, Taiyoung Hur, Hyuk Song
Spermatogenesis begins at puberty and continues throughout a male's life. This process is initiated and maintained by spermatogonial stem cells in the seminiferous tubules, and these cells produce haploid spermatozoa. Markers of male germ cells have been fully identified in rodents, including mice and rats, but not in canines. To characterize the canine male germ cells, histological and immunohistochemical analyses were performed, using prepubertal (1-3-month-old), early pubertal (4-month-old), and postpubertal (7-month-old) dog testes...
January 12, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28401161/estrogen-replacement-regulates-vaginal-innervations-in-ovariectomized-adult-virgin-rats-a-histological-study
#9
Ting Li, Yuanyuan Ma, Hong Zhang, Ping Yan, Lili Huo, Yongyan Hu, Xi Chen, Ting Li, Miao Zhang, Zhaohui Liu
Background. Our previous Gräfenberg spot findings confirmed that the distal-third areas of the anterior vaginal wall bore a significantly greater number of nerves and sexual hormone may have certain degree of influence on these significant differences. However, the role of estrogen in vaginal innervations remains controversial. Methods. To investigate whether hormonal-neural interactions occur in the vagina, sixty rats were randomly divided into six groups: Sham-operated, ovariectomy, and 4 treatment groups...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28371926/sensory-innervation-of-perivascular-adipose-tissue-a-crucial-role-in-artery-vasodilatation-and-leptin-release
#10
Hamidah Abu Bakar, William Robert Dunn, Craig Daly, Vera Ralevic
Aims: Electrical field stimulation (EFS) elicits robust sensory neurogenic relaxation responses in the rat isolated mesenteric arterial bed but these responses are absent or difficult to demonstrate in isolated arteries. We believe that this mismatch is due to the absence of perivascular adipose tissue (PVAT) as it is conventionally removed in studies on isolated vessels. We aimed to determine whether sensory nerves are expressed in PVAT, their physiological roles and their possible interactions with PVAT-derived adipokines...
March 23, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28270361/morphological-and-immunohistochemical-comparison-of-intrapancreatic-nerves-between-chronic-pancreatitis-and-type-1-autoimmune-pancreatitis
#11
Kota Kato, Tsukasa Ikeura, Masato Yanagawa, Takashi Tomiyama, Toshiro Fukui, Kazushige Uchida, Makoto Takaoka, Akiyoshi Nishio, Yoshiko Uemura, Sohei Satoi, Hisao Yamada, Kazuichi Okazaki
OBJECTIVES: The abdominal pain associated with chronic pancreatitis (CP) may be related to the increased number and size of intrapancreatic nerves. On the other hand, patients with type 1 autoimmune pancreatitis (AIP) rarely suffer from the pain syndrome, and there are no previous studies concerning the histopathological findings of intrapancreatic nerves in patients with type 1 AIP. The current study is aimed at investigating the differences in the histopathological and immunohistochemical findings of intrapancreatic nerves in patients with CP and type 1 AIP...
February 20, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28152579/5htr3a-driven-gfp-labels-immature-olfactory-sensory-neurons
#12
Thomas E Finger, Dianna L Bartel, Nicole Shultz, Noah B Goodson, Charles A Greer
The ionotropic serotonin receptor, 5-HT3 , is expressed by many developing neurons within the central nervous system. Since the olfactory epithelium continues to generate new olfactory sensory neurons (OSNs) throughout life, we investigated the possibility that 5-HT3 is expressed in the adult epithelium. Using a transgenic mouse in which the promoter for the 5-HT3a subunit drives expression of green fluorescent protein (GFP), we assessed the expression of this marker in the olfactory epithelium of adult mice...
February 2, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28090391/neurotoxin-induced-catecholaminergic-loss-in-the-colonic-myenteric-plexus-of-rhesus-monkeys
#13
Jeanette M Shultz, Henry Resnikoff, Viktorya Bondarenko, Valerie Joers, Andres Mejia, Heather Simmons, Marina E Emborg
OBJECTIVE: Constipation is a common non-motor symptom of Parkinson's disease (PD). Although pathology of the enteric nervous system (ENS) has been associated with constipation in PD, the contribution of catecholaminergic neurodegeneration to this symptom is currently debated. The goal of this study was to assess the effects of the neurotoxin 6-hydroxydopamine (6-OHDA) on the colonic myenteric plexus and shed light on the role of catecholaminergic innervation in gastrointestinal (GI) function...
November 2016: Journal of Alzheimer's Disease and Parkinsonism
https://www.readbyqxmd.com/read/28066953/diabetic-and-idiopathic-gastroparesis-is-associated-with-loss-of-cd206-positive-macrophages-in-the-gastric-antrum
#14
M Grover, C E Bernard, P J Pasricha, H P Parkman, S J Gibbons, J Tonascia, K L Koch, R W McCallum, I Sarosiek, W L Hasler, L A B Nguyen, T L Abell, W J Snape, M L Kendrick, T A Kellogg, T J McKenzie, F A Hamilton, G Farrugia
BACKGROUND: Animal studies have increasingly highlighted the role of macrophages in the development of delayed gastric emptying. However, their role in the pathophysiology of human gastroparesis is unclear. Our aim was to determine changes in macrophages and other cell types in the gastric antrum muscularis propria of patients with diabetic and idiopathic gastroparesis. METHODS: Full thickness gastric antrum biopsies were obtained from patients enrolled in the Gastroparesis Clinical Research Consortium (11 diabetic, 6 idiopathic) and 5 controls...
June 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28053620/establishment-of-a-surgically-induced-cryptorchidism-canine-recipient-model-for-spermatogonial-stem-cell-transplantation
#15
Won-Young Lee, Ran Lee, Hyuk Song, Tai-Young Hur, Seunghoon Lee, Jiyun Ahn, Hyunjhung Jhun
Transplantation of spermatogonial stem cells (SSCs) in experimental animal models has been used to study germ line stem cell biology and to produce transgenic animals. The species-specific recipient model preparation is important for the characterization of SSCs and the production of offspring. Here, we investigated the effects of surgically induced cryptorchidism in dog as a new recipient model for spermatogonial stem cell transplantation. Artificially unilateral or bilateral cryptorchidism was induced in ten mature male dogs by surgically returning the testis and epididymis to the abdominal cavity...
December 2016: Laboratory Animal Research
https://www.readbyqxmd.com/read/28028361/characterization-of-smooth-muscle-enteric-nerve-interstitial-cells-of-cajal-and-fibroblast-like-cells-in-the-gastric-musculature-of-patients-with-diabetes-mellitus
#16
Kyung Sik Park, Kwang Bum Cho, Il Seon Hwang, Jae Hyung Park, Byung Ik Jang, Kyeong Ok Kim, Sung Woo Jeon, Eun Soo Kim, Chang Sik Park, Joong Goo Kwon
AIM: To investigate histologic abnormalities in the gastric smooth muscle of patients with diabetes mellitus (DM). METHODS: Full-thickness gastric specimens were obtained from patients undergoing surgery for gastric cancer. H&E stain and Masson's Trichrome stain were performed to assess the degree of fibrosis. Immunohistochemical staining using various antibodies was also performed [antibodies against protein gene product 9.5 (PGP9.5), neuronal nitric oxide synthase (nNOS), vasoactive intestinal peptide (VIP), neurokinin-1 (NK1) receptor, c-Kit, and platelet-derived growth factor receptor-alpha, (PDGFRα)]...
December 14, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28013333/semaphorin-3a-expression-following-intestinal-ischemia-reperfusion-injury-in-sox10-venus-mice
#17
Masahiro Takeda, Katsumi Miyahara, Manabu Okawada, Chihiro Akazawa, Geoffrey J Lane, Atsuyuki Yamataka
PURPOSE: Semaphorin 3A (Sema3A) is a protein secreted during development of the nervous system that plays an important role in neuronal pathophysiology. However, there is no known correlation between Sema3A and intestinal ischemia/reperfusion (I/R) injury. We assessed Sema3A expression and distribution in relation to enteric nervous system (ENS) damage seen after intestinal I/R injury in Sox10-Venus mice. METHODS: Intestinal I/R injury was induced by vascular occlusion for 3 h...
March 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28002923/tendinopathic-supraspinatus-tenocytes-may-have-a-neuroendocrine-like-function-secreting-cgrp-sp-and-vegf-a-pilot-immunohistochemistry-study
#18
R Sahemey, P Malliaras, J S Lewis, G J Michael, P Shortland, D Morrissey, N Maffulli
We wanted to observe and compare the appearance of neurovascular tissue from tendon ex vivo, in patients with and without painful rotator cuff tendinopathy. Supraspinatus tendons were biopsied from 5 participants with painful tendinopathy and normal tendon from a young male. Slides were stained with haematoxylin and eosin and toluidine blue for histological assessment. Immunohistochemical markers for general nerves (protein gene-product 9.5 and synaptophysin), sensory nerves (calcitonin gene-related peptide; substance-P) and vascularisation (vascular endothelial growth factor) were used...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/27914685/protein-gene-product-9-5-pgp9-5-expression-in-benign-cutaneous-mesenchymal-histiocytic-and-melanocytic-lesions-comparison-with-cellular-neurothekeoma
#19
COMPARATIVE STUDY
Grace Y Wang, Rosalynn M Nazarian, Lili Zhao, Alexandra C Hristov, Rajiv M Patel, Douglas R Fullen, May P Chan
Cellular neurothekeoma (CNTK) frequently enters the differential diagnosis of a benign dermal cellular proliferation. Diagnosis often relies on immunohistochemistry including the use of protein gene product 9.5 (PGP9.5). A previous study demonstrated PGP9.5 expression across a wide variety of soft tissue neoplasms. We explored the utility of this antibody in distinguishing CNTK from other benign dermal-based lesions. A cohort of CNTK (n=7) and benign cutaneous lesions of neural (n=28), fibrohistiocytic (n=23), fibroblastic (n=25), histiocytic (n=18), myofibroblastic (n=7), smooth muscle (n=14), and melanocytic (n=12) differentiations were immunostained with PGP9...
January 2017: Pathology
https://www.readbyqxmd.com/read/27865118/dienogest-reduces-proliferation-ngf-expression-and-nerve-fiber-density-in-human-adenomyosis
#20
Arisa Takeuchi, Kaori Koga, Mariko Miyashita, Tomoko Makabe, Fusako Sue, Miyuki Harada, Tetsuya Hirata, Yasushi Hirota, Tomoyuki Fujii, Yutaka Osuga
OBJECTIVES: To evaluate the in vivo effect of dienogest on proliferation, apoptosis, aromatase expression, vascular density, nerve growth factor (NGF) expression and nerve fiber density in human adenomyosis tissue. STUDY DESIGN: Twelve women who underwent hysterectomy for adenomyosis were enrolled. Six patients received dienogest treatment prior to hysterectomy (dienogest group), and age-matched six patients who had not received any hormonal treatment for ≥3 months before surgery (control group)...
December 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
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