scholarly journals Neuregulin‐4 contributes to the establishment of cutaneous sensory innervation

2020 ◽  
Author(s):  
Laura Howard ◽  
Sean Wyatt ◽  
Alun M. Davies
Keyword(s):  
Sensory Innervation ◽  
Neuregulin 4

High-voltage EM description of the types and distribution of sensory endings in the inner conical body of the rat vibrissal follicle-sinus complex

1990 ◽  
Vol 48 (3) ◽  
pp. 410-411
Author(s):  
Tony M. Mosconi ◽  
Min J. Song ◽  
Frank L. Rice
Keyword(s):  
Mammalian Species ◽  
Dorsal Side ◽  
Hair Shaft ◽  
Sensory Innervation ◽  
Conical Body ◽  
Adult Rats ◽  
Perpendicular Plane ◽  
Ultrastructural Studies ◽  
Unmyelinated Axons ◽  
Sensory Endings

Whiskers or vibrissal follicle-sinus complexes (F-SCs) on the snouts of many mammalian species are structures that have complex, dense sensory innervation. The innervation of F-SCs is remarkably similar in all species with the exception of one site - the inner conical body (ICB). The ICB is an elongated cylindrical structure that encircles the hair shaft near the neck of the follicle. This site has received only cursory attention in ultrastructural studies of the F-SCAdult rats were perfused after the method of Renehan and Munger2. F-SCs were quartered longitudinally and embedded separately in Epon-Araldite. Serial 0.25 μm sections were cut in either the longitudinal or perpendicular plane through the ICB and examined with an AEI EM7 1.2 MV HVEM (Albany, NY) at 1000 KV. Sensory endings were reconstructed from serial micrographs through at least 20 μm in the longitudinal plane and through 10 μm in the perpendicular plane.From two to six small superficial vibrissal nerves converge upon the neck of the F-SC and descend into the ICB. The nerves branch into smaller bundles of myelinated and unmyelinated axons along the dorsal side of the hair shaft.

120 Genicular Nerve Radio-Frequency Ablation in The Treatment of Anterior Knee Pain in Patients with Osteoarthritis of The Knee Joint: Systematic Review

2021 ◽  
Vol 108 (Supplement_2) ◽  
Author(s):  
M Farrugia ◽  
C Tinning
Keyword(s):  
Knee Pain ◽  
Anterior Knee Pain ◽  
Comparative Studies ◽  
Primary Outcome ◽  
Final Analysis ◽  
Primary Outcome Measure ◽  
Sensory Innervation ◽  
Osteoarthritis Of The Knee ◽  
Pain Scores ◽  
Anterior Knee

Abstract Anterior knee pain is one of the main symptoms in osteoarthritis, resulting from the rich sensory innervation of its capsule. Pain control can be difficult to achieve, with non-responders to conservative and medical therapy often requiring a total knee replacement. Radiofrequency ablation (RFA) is a novel technique that could be beneficial in managing anterior knee pain by targeting the genicular nerves around the knee; however, its routine use is not included in current guidelines. A literature search identified fifty-two results, which underwent screening using a study protocol and the final literature sources, of varying levels of evidence, underwent critical appraisal and analysis. The primary outcome included the significant improvement of pain scores from baseline, against their respective control treatments. The ten studies included in the final analysis consisted of seven comparative studies and three non-comparative studies. Literature showed significant improvement in their mean pain scores, all meeting the primary outcome measure. Most studies also showed significant improvement from the control treatments used. Current literature shows evidence that genicular nerve RFA is an effective and safe treatment modality in the management of anterior knee pain secondary to osteoarthritis. However, the literature available is limited and further comparative studies are required.

Bilateral mandibular block improves pain relief and morphine consumption in mandibular osteotomies: a prospective, randomized, double-blind, placebo-controlled clinical trial

2021 ◽  
Vol 46 (4) ◽  
pp. 322-327
Author(s):  
Marina Bertuit ◽  
Francesca Rapido ◽  
Habib Ly ◽  
Charlotte Vannucci ◽  
Jérôme Ridolfo ◽  
...  
Keyword(s):  
Postoperative Analgesia ◽  
Severe Pain ◽  
Postoperative Nausea And Vomiting ◽  
Sensory Innervation ◽  
Morphine Consumption ◽  
Controlled Study ◽  
Controlled Clinical Trial ◽  
Block Group ◽  
Double Blind ◽  
Double Blind Placebo

BackgroundThe sensory innervation of the lower jaw mainly depends on the third root of the trigeminal nerve, the mandibular nerve (V3). The aim of this single-center, prospective, randomized, double-blind, placebo-controlled study was to evaluate the effectiveness of bilateral V3 block for postoperative analgesia management in mandibular osteotomies.Methods107 patients undergoing mandibular surgery (75 scheduled osteotomies and 32 mandible fractures) were randomized in two groups. A bilateral V3 block was performed in each group, either with ropivacaine 0.75% (block group, n=50) or with a placebo (placebo group, n=57). A postoperative multimodal analgesia was equally provided to both groups. The primary outcome was the cumulative morphine consumption at 24 hours. Secondary outcomes were the occurrence of severe pain and the incidence of postoperative nausea and vomiting (PONV) in the first 24 hours. Data were analyzed on an intention-to-treat basis.ResultsThe cumulative morphine consumption at 24 hours was significantly lower in the block group (median 8.0 mg (IQR 2.0–21.3) vs 12.0 mg (IQR 8.0–22.0), p=0.03), as well as the incidence of severe pain during the 24 hours of follow-up (4.0% vs 22.8%, p<0.01). The mandibular block had no impact on the incidence of PONV.ConclusionBilateral V3 block for mandibular osteotomies is an effective opioid-sparing procedure. It provided better postoperative analgesia in the first 24 hours, and it did not affect PONV incidence.Trial registration numberNCT02618993.

Sensory innervation of the Achilles tendon by group III and IV afferent fibers

1985 ◽  
Vol 172 (2) ◽  
pp. 145-156 ◽  
Author(s):  
K. H. Andres ◽  
M. D�ring ◽  
R. F. Schmidt
Keyword(s):  
Achilles Tendon ◽  
Sensory Innervation ◽  
Group Iii ◽  
Afferent Fibers

scholarly journals Renal sensory and sympathetic nerves reinnervate the kidney in a similar time-dependent fashion after renal denervation in rats

2013 ◽  
Vol 304 (8) ◽  
pp. R675-R682 ◽  
Author(s):  
Jan Mulder ◽  
Tomas Hökfelt ◽  
Mark M. Knuepfer ◽  
Ulla C. Kopp
Keyword(s):  
Substance P ◽  
Optical Density ◽  
Renal Denervation ◽  
Time Course ◽  
Sympathetic Nerves ◽  
Sensory Nerves ◽  
Sensory Innervation ◽  
Multiple Time ◽  
Sensory Reinnervation ◽  
Renal Sympathetic

Efferent renal sympathetic nerves reinnervate the kidney after renal denervation in animals and humans. Therefore, the long-term reduction in arterial pressure following renal denervation in drug-resistant hypertensive patients has been attributed to lack of afferent renal sensory reinnervation. However, afferent sensory reinnervation of any organ, including the kidney, is an understudied question. Therefore, we analyzed the time course of sympathetic and sensory reinnervation at multiple time points (1, 4, and 5 days and 1, 2, 3, 4, 6, 9, and 12 wk) after renal denervation in normal Sprague-Dawley rats. Sympathetic and sensory innervation in the innervated and contralateral denervated kidney was determined as optical density (ImageJ) of the sympathetic and sensory nerves identified by immunohistochemistry using antibodies against markers for sympathetic nerves [neuropeptide Y (NPY) and tyrosine hydroxylase (TH)] and sensory nerves [substance P and calcitonin gene-related peptide (CGRP)]. In denervated kidneys, the optical density of NPY-immunoreactive (ir) fibers in the renal cortex and substance P-ir fibers in the pelvic wall was 6, 39, and 100% and 8, 47, and 100%, respectively, of that in the contralateral innervated kidney at 4 days, 4 wk, and 12 wk after denervation. Linear regression analysis of the optical density of the ratio of the denervated/innervated kidney versus time yielded similar intercept and slope values for NPY-ir, TH-ir, substance P-ir, and CGRP-ir fibers (all R2 > 0.76). In conclusion, in normotensive rats, reinnervation of the renal sensory nerves occurs over the same time course as reinnervation of the renal sympathetic nerves, both being complete at 9 to 12 wk following renal denervation.

scholarly journals Association of circulating neuregulin 4 with metabolic syndrome in obese adults: a cross-sectional study

BMC Medicine ◽  
2016 ◽  
Vol 14 (1) ◽  
Author(s):  
Chengfu Cai ◽  
Mingzhu Lin ◽  
Yanfang Xu ◽  
Xuejun Li ◽  
Shuyu Yang ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Obese Adults ◽  
Cross Sectional ◽  
Neuregulin 4

Sensory innervation of the anal canal and anorectal line in Hirschsprung’s disease: histological evidence from mouse models

2017 ◽  
Vol 33 (8) ◽  
pp. 883-886 ◽  
Author(s):  
Masahiro Takeda ◽  
Katsumi Miyahara ◽  
Chihiro Akazawa ◽  
Geoffrey J. Lane ◽  
Atsuyuki Yamataka
Keyword(s):  
Anal Canal ◽  
Mouse Models ◽  
Hirschsprung's Disease ◽  
Hirschsprung’S Disease ◽  
Sensory Innervation ◽  
Histological Evidence
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