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Age-dependent change of RFRP-3 neuron numbers and innervation in female mice.
Neuropeptides
April 2022
Institut des Neurosciences Cellulaire et Intégratives (UPR CNRS3212), Université de Strasbourg, 8, allée du Général Rouvillois, 67000 Strasbourg, France. Electronic address:
In female mammals, reproductive senescence is a complex process involving progressive ovarian dysfunction, associated with altered central control of the hypothalamic-pituitary-gonadal axis and desynchronization of the circadian system. The objective of this study was to investigate age-dependent changes in the daily regulation of Arg-Phe amide-related peptide-3 (RFRP-3), a hypothalamic peptide involved in reproduction, in female C57BL/6 J mice of different age groups (4, 13, and 19 months old) sampled at their diestrus stage. We found an age-dependent decrease in the total number of RFRP-3 neurons and in the relative number of activated (i.
View Article and Find Full Text PDFInnervation of the human spleen: A complete hilum-embedding approach.
Brain Behav Immun
March 2019
Department of Anatomy & Embryology, Faculty of Health, Medicine and Life Sciences, Maastricht University, the Netherlands.
Introduction: The spleen is hypothesized to play a role in the autonomic nervous system (ANS)-mediated control of host defence, but the neuroanatomical evidence for this assumption rests on a sparse number of studies, which mutually disagree with respect to the existence of cholinergic or vagal innervation.
Methods: We conducted an immuno- and enzyme-histochemical study of the innervation of the human spleen using a complete hilum-embedding approach to ensure that only nerves that entered or left the spleen were studied, and that all splenic nerves were included in the sampled area. Furthermore, a complete embedded spleen was serially sectioned to prepare a 3D reconstruction of the hilar nerve plexus.
In situ proximity of CX3CR1-positive mononuclear phagocytes and VIP-ergic nerve fibers suggests VIP-ergic immunomodulation in the mouse ileum.
Cell Tissue Res
June 2017
Laboratory of Cell Biology and Histology, Department of Veterinary Sciences, University of Antwerp, Antwerp, Belgium.
Being continuously exposed to a plethora of antigens ranging from food antigens to potential pathogenic organisms, the gastrointestinal (GI) tract harbors the largest collection of immune cells in the mammalian body. This immune system has to maintain a delicate balance between mounting an active immune response and maintaining tolerance. The GI tract is also home to an elaborate intrinsic nervous system, the enteric nervous system (ENS).
View Article and Find Full Text PDFResveratrol promotes myenteric neuroprotection in the ileum of rats after ischemia-reperfusion injury.
Life Sci
December 2016
Department of Morphological Sciences, State University of Maringá, Avenue Colombo, 5790, CEP: 87020-900 Maringá, Paraná, Brazil. Electronic address:
Aims: The present study evaluated the effects of resveratrol in the myenteric plexus after intestinal ischemia-reperfusion (I/R) injury caused by occluding the superior mesenteric artery for 45min, followed by 7days of reperfusion.
Main Methods: Forty-two male Wistar rats were divided into seven groups: control (C group), untreated sham surgery control (SC group), sham surgery control treated with resveratrol before surgery (STA group), sham surgery control treated with resveratrol before and after surgery (STAD group), ischemic control (IRC group), ischemic treated before I/R (IRTA group), and ischemic treated before and after I/R (IRTAD group). Resveratrol (10mg/kg) was administered for 4days and 2h prior to surgery and/or 7days later.
Differences in control of parasympathetic vasodilation between submandibular and sublingual glands in the rat.
Am J Physiol Regul Integr Comp Physiol
December 2015
Division of Physiology, Department of Oral Biology, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido, Japan
We examined blood flow in the submandibular gland (SMGBF) and sublingual gland (SLGBF) during electrical stimulation of the central cut end of the lingual nerve (LN) in the urethane-anesthetized rats using a laser speckle imaging flow meter. LN stimulation elicited intensity- and frequency-dependent SMGBF and SLGBF increases, and the magnitude of the SMGBF increase was higher than that of the SLGBF increase. The increase in both glands was significantly inhibited by intravenous administration of the autonomic cholinergic ganglion blocker hexamethonium.
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