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Neuropeptides

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https://www.readbyqxmd.com/read/28430864/the-gnih-lpxrfa-system-s-regulation-of-reproduction-in-the-brain-pituitary-axis-of-the-zebrafish-danio-rerio
#1
Olivia Smith Spicer, Nilli Zmora, Ten-Tsao Wong, Matan Golan, Berta Levavi-Sivan, Yoav Gothilf, Yonathan Zohar
Gonadotropin-inhibitory hormone (GNIH) was discovered in quail with the ability to reduce gonadotropin expression/secretion in the pituitary. There have been few studies on GNIH orthologs in teleosts (Lpxrfa peptides), which have provided inconsistent results. Therefore, the goal of this study was to determine the roles and modes of action by which Lpxrfa exerts its functions in the brain-pituitary axis of zebrafish (Danio rerio). We localized Lpxrfa soma to the ventral hypothalamus, with fibers extending throughout the brain and to the pituitary...
April 18, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28430617/estrogen-receptors-involvement-in-intervertebral-discogenic-pain-of-the-elderly-women-colocalization-and-correlation-with-the-expression-of-substance-p-in-nucleus-pulposus
#2
Xiao-Xing Song, Sheng Shi, Zhen Guo, Xin-Feng Li, Bu-Wei Yu
Estrogenic modulation of pain is an exceedingly complex phenomenon. However, whether estrogen is involved in discogenic low back pain still remains unclear. Here, immunoreactivity staining technique was used to examine the expression level of the estrogen receptors (ERα and ERβ) and a pain related neuropeptide, Substance P in the lumbar intervertebral discs to analyze the relationship between the ERs and Substance P. Nucleus pulposus tissues of 23 elderly female patients were harvested during spinal surgeries and made to detect the immunoreactivity staining of ERα, ERβ and Substance P...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430154/circadian-rhythm-neuropeptides-in-drosophila-signals-for-normal-circadian-function-and-circadian-neurodegenerative-disease
#3
REVIEW
Qiankun He, Binbin Wu, Jeffrey L Price, Zhangwu Zhao
Circadian rhythm is a ubiquitous phenomenon in many organisms ranging from prokaryotes to eukaryotes. During more than four decades, the intrinsic and exogenous regulations of circadian rhythm have been studied. This review summarizes the core endogenous oscillation in Drosophila and then focuses on the neuropeptides, neurotransmitters and hormones that mediate its outputs and integration in Drosophila and the links between several of these (pigment dispersing factor (PDF) and insulin-like peptides) and neurodegenerative disease...
April 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28427990/neuropeptide-y-not-involved-in-cutaneous-vascular-control-in-young-human-females-taking-oral-contraceptive-hormones
#4
Gary J Hodges, Zachary T Martin, Andrew T Del Pozzi
We previously reported that the cutaneous vasodilator response to local warming in males required noradrenaline (NA) and neuropeptide-Y (NPY). Animal work has shown no role for NPY in female vascular control. We investigated the contribution of NA and NPY in human female cutaneous vascular control. Nine female and nine male participants volunteered. To elucidate whether synthetic oestrogen and progesterone altered cutaneous vascular responses, females were tested in high-hormone (HH) and low-hormone (LH) phases of oral contraceptive pill (OCP)...
April 18, 2017: Microvascular Research
https://www.readbyqxmd.com/read/28426765/allatotropin-a-pleiotropic-neuropeptide-that-elicits-mosquito-immune-responses
#5
Salvador Hernández-Martínez, Minerva Sánchez-Zavaleta, Kevin Brito, Antonia Herrera-Ortiz, Sheila Ons, Fernando G Noriega
Allatotropins (AT) are neuropeptides with pleotropic functions on a variety of insect tissues. They affect processes such as juvenile hormone biosynthesis, cardiac rhythm, oviduct and hindgut contractions, nutrient absorption and circadian cycle. The present work provides experimental evidence that AT elicits immune responses in two important mosquito disease vectors, Anopheles albimanus and Aedes aegypti. Hemocytes and an immune-competent mosquito cell line responded to AT by showing strong morphological changes and increasing bacterial phagocytic activity...
2017: PloS One
https://www.readbyqxmd.com/read/28425495/the-biglen-gpr171-peptide-receptor-system-within-the-basolateral-amygdala-regulates-anxiety-like-behavior-and-contextual-fear-conditioning
#6
Erin N Bobeck, Ivone Gomes, Darlene Pena, Kirstie A Cummings, Roger L Clem, Mihaly Mezei, Lakshmi A Devi
Studies show that neuropeptide-receptor systems in the basolateral amygdala (BLA) play an important role in the pathology of anxiety and other mood disorders. Since GPR171, a recently deorphanized receptor for the abundant neuropeptide BigLEN, is expressed in the BLA, we investigated its role in fear and anxiety-like behaviors. To carry out these studies we identified small molecule ligands using a homology model of GPR171 to virtually screen a library of compounds. One of the hits, MS0021570_1, was identified as a GPR171 antagonist based on its ability to block (i) BigLEN-mediated activation of GPR171 in heterologous cells, (ii) BigLEN-mediated hyperpolarization of BLA pyramidal neurons, and (iii) feeding induced by DREADD-mediated activation of BigLEN containing AgRP neurons in the arcuate nucleus...
April 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28424618/pharmacological-and-biochemical-characterization-of-tlqp-21-activation-of-a-binding-site-on-cho-cells
#7
Laura Molteni, Laura Rizzi, Elena Bresciani, Roberta Possenti, Pamela Petrocchi Passeri, Corrado Ghè, Giampiero Muccioli, Jean-Alain Fehrentz, Pascal Verdié, Jean Martinez, Robert J Omeljaniuk, Giuseppe Biagini, Anna Binda, Ilaria Rivolta, Vittorio Locatelli, Antonio Torsello
VGF is a propeptide of 617 amino acids expressed throughout the central and the peripheral nervous system. VGF and peptides derived from its processing have been found in dense core vesicles and are released from neuronal and neuroendocrine cells via the regulated secretory pathway. Among VGF-derived neuropeptides, TLQP-21 (VGF(556-576)) has raised a huge interest and is one of most studied. TLQP-21 is a multifunctional neuropeptide involved in the control of several physiological functions, potentially including energy homeostasis, pain modulation, stress responsiveness and reproduction...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28424580/the-role-of-microrna-in-the-modulation-of-the-melanocortinergic-system
#8
REVIEW
Adel Derghal, Mehdi Djelloul, Jérôme Trouslard, Lourdes Mounien
The central control of energy balance involves a highly regulated neuronal network within the hypothalamus and the dorsal vagal complex. In these structures, pro-opiomelanocortin (POMC) neurons are known to reduce meal size and to increase energy expenditure. In addition, leptin, a peripheral signal that relays information regarding body fat content, modulates the activity of melanocortin pathway neurons including POMC-, Agouti-related peptide (AgRP)/Neuropeptide Y (NPY)-, melanocortin receptors (MC3R and MC4R)-expressing neurons...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28424518/the-genetic-basis-of-parental-care-evolution-in-monogamous-mice
#9
Andres Bendesky, Young-Mi Kwon, Jean-Marc Lassance, Caitlin L Lewarch, Shenqin Yao, Brant K Peterson, Meng Xiao He, Catherine Dulac, Hopi E Hoekstra
Parental care is essential for the survival of mammals, yet the mechanisms underlying its evolution remain largely unknown. Here we show that two sister species of mice, Peromyscus polionotus and Peromyscus maniculatus, have large and heritable differences in parental behaviour. Using quantitative genetics, we identify 12 genomic regions that affect parental care, 8 of which have sex-specific effects, suggesting that parental care can evolve independently in males and females. Furthermore, some regions affect parental care broadly, whereas others affect specific behaviours, such as nest building...
April 19, 2017: Nature
https://www.readbyqxmd.com/read/28423914/current-views-on-neuropeptide-y-and-diabetes-related-atherosclerosis
#10
Wei-Wei Sun, Ping Zhu, Yan-Chuan Shi, Chen-Liang Zhang, Xu-Feng Huang, Shi-Yu Liang, Zhi-Yuan Song, Shu Lin
Diabetes-induced atherosclerotic cardiovascular disease is the leading cause of death of diabetic patients. Neuronal regulation plays a critical role in glucose metabolism and cardiovascular function under physiological and pathological conditions, among which, neurotransmitter neuropeptide Y has been shown to be closely involved in these two processes. Elevated central neuropeptide Y level promotes food intake and reduces energy expenditure, thereby increasing adiposity. Neuropeptide Y is co-localized with noradrenaline in central and sympathetic nervous systems...
April 1, 2017: Diabetes & Vascular Disease Research
https://www.readbyqxmd.com/read/28423013/mapping-the-co-localization-of-the-circadian-proteins-per2-and-bmal1-with-enkephalin-and-substance-p-throughout-the-rodent-forebrain
#11
Ariana Frederick, Jory Goldsmith, Nuria de Zavalia, Shimon Amir
Despite rhythmic expression of clock genes being found throughout the central nervous system, very little is known about their function outside of the suprachiasmatic nucleus. Determining the pattern of clock gene expression across neuronal subpopulations is a key step in understanding their regulation and how they may influence the functions of various brain structures. Using immunofluorescence and confocal microscopy, we quantified the co-expression of the clock proteins BMAL1 and PER2 with two neuropeptides, Substance P (SubP) and Enkephalin (Enk), expressed in distinct neuronal populations throughout the forebrain...
2017: PloS One
https://www.readbyqxmd.com/read/28421605/cholinergic-glutamatergic-co-transmission-in-striatal-cholinergic-interneurons-new-mechanisms-regulating-striatal-computation
#12
REVIEW
Ornela Kljakic, Helena Janickova, Vania F Prado, Marco A M Prado
It is well established that neurons secrete neuropeptides and ATP with classical neurotransmitters; however, certain neuronal populations are also capable of releasing two classical neurotransmitters by a process named co-transmission. Although there has been progress in our understanding of the molecular mechanism underlying co-transmission, the individual regulation of neurotransmitter secretion and the functional significance of this neuronal 'bilingualism' is still unknown. Striatal cholinergic interneurons (CINs) have been shown to secrete glutamate (Glu) in addition to acetylcholine (ACh) and are recognized for their role in the regulation of striatal circuits and behavior...
April 18, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28421370/the-current-state-of-knowledge-on-the-neuroactive-compounds-that-affect-the-development-mating-and-reproduction-of-spiders-araneae-compared-to-insects
#13
REVIEW
Marta Sawadro, Agata Bednarek, Agnieszka Babczyńska
The neuroendocrine system of insects, including the presence of the main neuroactive compounds, and their role in ontogenesis are probably best understood of all the arthropods. Development, metamorphosis, the maturation of the gonads, vitellogenesis and egg production are regulated by hormones (juvenile hormones, ecdysteroids) and neuropeptides. However, knowledge about their presence and functions in spiders is fragmentary. In this paper, we present a summary of the current data about the juvenile hormones, ecdysteroids and neuropeptides in selected groups of arthropods, with particular emphasis on spiders...
June 2017: Invertebrate Neuroscience: IN
https://www.readbyqxmd.com/read/28420957/neuropeptide-y-induced-orexigenic-action-is-attenuated-by-the-orexin-receptor-antagonist-in-bullfrog-larvae
#14
Kouhei Matsuda, Kairi Matsumura, Syun-Suke Shimizu, Tomoya Nakamachi, Norifumi Konno
In bullfrog larvae at the pre- and pro-metamorphic stages, feeding behavior is regulated by appetite factors such as orexigenic peptides. In fact, food intake is enhanced by intracerebroventricular (ICV) administration of neuropeptide Y (NPY) and orexin A. Using goldfish, our previous study indicated that the orexigenic action of NPY is mediated by orexin A, suggesting the functional interaction between the two. However, there is little information about whether the action of orexin A mediates the orexigenic action of NPY in bullfrog larvae...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28419831/molecular-phenotyping-of-transient-postnatal-tyrosine-hydroxylase-neurons-in-the-rat-bed-nucleus-of-the-stria-terminalis
#15
David A Carter
The bed nucleus of the stria terminalis (BNST) is a complex integrative centre in the forebrain, composed of multiple sub-nuclei, each with discrete populations of neurons. Progress in understanding BNST function, both in the adult and during postnatal maturation, is dependent upon a more complete characterization of neuronal phenotypes in the BNST. The aim of the current study was to define the molecular phenotype of one postnatal BNST neuronal population, in order to identify molecular factors that may underlie both (protein marker-related) immaturity, and secondly, the transience of this phenotype...
April 15, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28419227/neural-programmatic-role-of-leptin-tnf%C3%AE-melanocortin-and-glutamate-in-blood-pressure-regulation-versus-obesity-related-hypertension-in-male-c57bl-6-mice
#16
Bin Yu, Dongsheng Cai
Continuous nutritional surplus sets the stage for hypertension development. While moderate dietary obesity in mice is normotensive, the homeostatic balance is disrupted concurrent with an increased risk of hypertension, but it remains unclear how the obesity-associated pre-hypertensive state is converted into overt hypertension. Here, using mice with high-fat-diet (HFD) feeding-induced moderate obesity vs. control-diet (CD) feeding lean mice, we comparatively studied the effects of central leptin and TNFα as well as the involvement of the neuropeptide melanocortin pathway versus the neurotransmitter glutamate pathway...
April 13, 2017: Endocrinology
https://www.readbyqxmd.com/read/28418399/restoring-effects-of-oxytocin-on-the-attentional-preference-for-faces-in-autism
#17
M Kanat, I Spenthof, A Riedel, L T van Elst, M Heinrichs, G Domes
Reduced attentional preference for faces and symptoms of social anxiety are common in autism spectrum disorders (ASDs). The neuropeptide oxytocin triggers anxiolytic functions and enhances eye gaze, facial emotion recognition and neural correlates of face processing in ASD. Here we investigated whether a single dose of oxytocin increases attention to faces in ASD. As a secondary question, we explored the influence of social anxiety on these effects. We tested for oxytocin's effects on attention to neutral faces as compared to houses in a sample of 29 autistic individuals and 30 control participants using a dot-probe paradigm with two different presentation times (100 or 500 ms)...
April 18, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28418087/traumatic-stress-induced-persistent-changes-in-dna-methylation-regulate-neuropeptide-y-expression-in-rat-jejunum
#18
S Sagarkar, S Mahajan, A G Choudhary, C D Borkar, D M Kokare, A J Sakharkar
BACKGROUND: Stress-induced chronic neuropsychiatric conditions such as anxiety are often co-morbid with gastrointestinal malfunctions. While we find enduring anxiety-like symptoms following minimal traumatic brain injury (MTBI) in rats, gastrointestinal consequences of MTBI remain elusive. METHODS: In this study, we examined the effects of MTBI on a major gut peptide, neuropeptide Y (NPY) and gut motility. DNA methylation was studied as a possible epigenetic mechanism operative in the regulation of NPY expression in the gut...
April 18, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28417590/calcitonin-gene-related-peptide-cgrp-a-novel-target-for-alzheimer-s-disease
#19
REVIEW
Yogendra Singh, Gaurav Gupta, Birendra Shrivastava, Rajiv Dahiya, Juhi Tiwari, Madhu Ashwathanarayana, Rakesh Kumar Sharma, Mohit Agrawal, Anurag Mishra, Kamal Dua
Alzheimer's disease (AD) is leading cause of death among older characterized by neurofibrillary tangles, oxidative stress, progressive neuronal deficits, and increased levels of amyloid-β (Aβ) peptides. Cholinergic treatment could be the best suitable physiological therapy for AD. Calcitonin gene-related peptide (CGRP) is a thirty-seven-amino acid regulatory neuropeptide resulting from different merging of the CGRP gene, which also includes adrenomedullin, amylin, calcitonin, intermedin, and calcitonin receptor-stimulating peptide...
April 17, 2017: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/28417205/an-eclosion-hormone-like-gene-participates-in-the-molting-process-of-palaemonid-shrimp-exopalaemon-carinicauda
#20
Lihong Zhou, Shihao Li, Zhiwei Wang, Fuhua Li, Jianhai Xiang
Molting behavior is an important physiological process related to metamorphosis, growth, and reproduction in crustaceans. Previous studies indicated that the molting process was controlled by 20-hydroxyecdysone (20E) and upstream hormones, peptides, and environmental factors, which regulate 20E function. Eclosion hormone (EH) in insect is a kind of neuropeptide that is regulated by 20E and triggers ecdysis behavior at the end of molting process. However, the function of eclosion hormone gene during the molting process in crustaceans is still largely unknown...
April 18, 2017: Development Genes and Evolution
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