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https://www.readbyqxmd.com/read/29148801/neuropeptidomics-of-the-bed-bug-cimex-lectularius
#1
Reinhard Predel, Susanne Neupert, Christian Derst, Klaus Reinhardt, Christian Wegener
The bed bug Cimex lectularius is a globally distributed human ectoparasite with fascinating biology. It has recently acquired resistance against a broad range of insecticides, causing a worldwide increase in bed bug infestations. The recent annotation of the bed bug genome revealed a full complement of neuropeptide and neuropeptide receptor genes in this species. With regard to the biology of C. lectularius, neuropeptide signalling is especially interesting since it regulates feeding, diuresis, digestion as well as reproduction, and also provides potential new targets for chemical control...
November 17, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/29146410/cart-neurons-in-the-arcuate-nucleus-and-lateral-hypothalamic-area-exert-differential-controls-on-energy-homeostasis
#2
Jackie Lau, Aitak Farzi, Yue Qi, Regine Heilbronn, Mario Mietzsch, Yan-Chuan Shi, Herbert Herzog
OBJECTIVE: The cocaine- and amphetamine-regulated transcript (CART) codes for a pivotal neuropeptide important in the control of appetite and energy homeostasis. However, limited understanding exists for the defined effector sites underlying CART function, as discrepant effects of central CART administration have been reported. METHODS: By combining Cart-cre knock-in mice with a Cart adeno-associated viral vector designed using the flip-excision switch (AAV-FLEX) technology, specific reintroduction or overexpression of CART selectively in CART neurons in the arcuate nucleus (Arc) and lateral hypothalamic area (LHA), respectively, was achieved...
November 8, 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29145926/corrigendum-to-increased-high-molecular-weight-adiponectin-but-decreased-total-adiponectin-and-kisspeptin-in-central-precocious-puberty-compared-with-aged-matched-prepubertal-girls
#3
Chantacha Sitticharoon, Maynart Sukharomana, Supawadee Likitmaskul, Malika Churintaraphan, Pailin Maikaew
The aim of the present study was to compare serum leptin, kisspeptin, total adiponectin, high molecular weight (HMW) adiponectin and neuropeptide Y (NPY) levels between girls with central precocious puberty (CPP; n=26, 7-9.5 years old) and age-matched controls (n=29) including or excluding obese girls. Leptin and NPY levels were comparable between CPP and control girls. Kisspeptin levels were lower in the CPP than control group, and were positively correlated with oestrogen in the control group and with systolic and diastolic blood pressure in the CPP group...
November 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/29144396/salivary-oxytocin-concentration-changes-during-a-group-drumming-intervention-for-maltreated-school-children
#4
Teruko Yuhi, Hiroaki Kyuta, Hisa-Aki Mori, Chihiro Murakami, Kazumi Furuhara, Mari Okuno, Masaki Takahashi, Daikei Fuji, Haruhiro Higashida
Many emotionally-disturbed children who have been maltreated and are legally separated from their parents or primary caregivers live in group homes and receive compulsory education. Such institutions provide various special intervention programs. Taiko-ensou, a Japanese style of group drumming, is one such program because playing drums in a group may improve children's emotional well-being. However, evidence for its efficacy has not been well established at the biological level. In this study, we measured salivary levels of oxytocin (OT), a neuropeptide associated with social memory and communication, in three conditions (recital, practice, and free sessions) in four classes of school-aged children...
November 16, 2017: Brain Sciences
https://www.readbyqxmd.com/read/29143821/erratum-the-neuropeptide-nmu-amplifies-ilc2-driven-allergic-lung-inflammation
#5
Antonia Wallrapp, Samantha J Riesenfeld, Patrick R Burkett, Raja-Elie E Abdulnour, Jackson Nyman, Danielle Dionne, Matan Hofree, Michael S Cuoco, Christopher Rodman, Daneyal Farouq, Brian J Haas, Timothy L Tickle, John J Trombetta, Pankaj Baral, Christoph S N Klose, Tanel Mahlakõiv, David Artis, Orit Rozenblatt-Rosen, Isaac M Chiu, Bruce D Levy, Monika S Kowalczyk, Aviv Regev, Vijay K Kuchroo
This corrects the article DOI: 10.1038/nature24029.
November 15, 2017: Nature
https://www.readbyqxmd.com/read/29141033/transcriptome-profiling-of-claw-muscle-of-the-mud-crab-scylla-paramamosain-at-different-fattening-stages
#6
Qingling Jiang, Chenchang Bao, Ya'nan Yang, An Liu, Fang Liu, Huiyang Huang, Haihui Ye
In crustaceans, muscle growth and development is complicated, and to date substantial knowledge gaps exist. In this study, the claw muscle, hepatopancreas and nervous tissue of the mud crab (Scylla paramamosain) were collected at three fattening stages for sequence by the Illumina sequencing. A total of 127.87 Gb clean data with no less than 3.94 Gb generated for each sample and the cycleQ30 percentages were more than 86.13% for all samples. De Bruijn assembly of these clean data produced 94,853 unigenes, thereinto, 50,059 unigenes were found in claw muscle...
2017: PloS One
https://www.readbyqxmd.com/read/29141003/trpa1-and-trpv1-are-required-for-lidocaine-evoked-calcium-influx-and-neuropeptide-release-but-not-cytotoxicity-in-mouse-sensory-neurons
#7
Mirjam Eberhardt, Thomas Stueber, Jeanne de la Roche, Christine Herzog, Andreas Leffler, Peter W Reeh, Katrin Kistner
BACKGROUND: Local anaesthetics (LA) reduce neuronal excitability by inhibiting voltage-gated Na+ channels. When applied at high concentrations in the direct vicinity of nerves, LAs can also induce relevant irritation and neurotoxicity via mechanisms involving an increase of intracellular Ca2+. In the present study we explored the role of the Ca2+-permeable ion channels TRPA1 and TRPV1 for lidocaine-induced Ca2+-influx, neuropeptide release and neurotoxicity in mouse sensory neurons. METHODS: Cultured dorsal root ganglion (DRG) neurons from wildtype and mutant mice lacking TRPV1, TRPA1 or both channels were explored by means of calcium imaging, whole-cell patch clamp recordings and trypan blue staining for cell death...
2017: PloS One
https://www.readbyqxmd.com/read/29135436/defective-synaptic-transmission-causes-disease-signs-in-a-mouse-model-of-juvenile-neuronal-ceroid-lipofuscinosis
#8
Benedikt Grünewald, Maren D Lange, Christian Werner, Aet O'Leary, Andreas Weishaupt, Sandy Popp, David A Pearce, Heinz Wiendl, Andreas Reif, Hans C Pape, Klaus V Toyka, Claudia Sommer, Christian Geis
Juvenile neuronal ceroid lipofuscinosis (JNCL or Batten disease) caused by mutations in the CLN3 gene is the most prevalent inherited neurodegenerative disease in childhood resulting in widespread central nervous system dysfunction and premature death. The consequences of CLN3 mutation on the progression of the disease, on neuronal transmission, and on central nervous network dysfunction are poorly understood. We used Cln3 knockout (Cln3(Δex7/8)) mice and found increased anxiety-related behavior and impaired aversive learning as well as markedly affected motor function including disordered coordination...
November 14, 2017: ELife
https://www.readbyqxmd.com/read/29134359/anxiety-depression-and-the-microbiome-a-role-for-gut-peptides
#9
REVIEW
Gilliard Lach, Harriet Schellekens, Timothy G Dinan, John F Cryan
The complex bidirectional communication between the gut and the brain is finely orchestrated by different systems, including the endocrine, immune, autonomic, and enteric nervous systems. Moreover, increasing evidence supports the role of the microbiome and microbiota-derived molecules in regulating such interactions; however, the mechanisms underpinning such effects are only beginning to be resolved. Microbiota-gut peptide interactions are poised to be of great significance in the regulation of gut-brain signaling...
November 13, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/29133203/expression-and-functional-characterization-of-tachykinin-related-peptides-in-the-blood-feeding-bug-rhodnius-prolixus
#10
A N S Haddad, M S Defferrari, S Hana, S G Szeto, A B Lange
Tachykinins (tachykinin-related peptides, TRPs) are multifunctional neuropeptides that have widespread distribution in the central nervous system (CNS) and in the gastrointestinal tract of many insects, and most have been shown to stimulate contractions of visceral muscles. Invertebrate TRPs carry a characteristic conserved C-terminal pentapeptide (FXGXR-amide) and most of them share some amino acid sequence similarities (approx. 45%) with the vertebrate and mammalian tachykinin family. We have functionally characterized the tachykinins in R...
November 10, 2017: Peptides
https://www.readbyqxmd.com/read/29132420/substance-p-and-patterned-silk-biomaterial-stimulate-periodontal-ligament-stem-cells-to-form-corneal-stroma-in-a-bioengineered-three-dimensional-model
#11
Jialin Chen, Wei Zhang, Peyman Kelk, Ludvig J Backman, Patrik Danielson
BACKGROUND: We aimed to generate a bioengineered multi-lamellar human corneal stroma tissue in vitro by differentiating periodontal ligament stem cells (PDLSCs) towards keratocytes on an aligned silk membrane. METHODS: Human PDLSCs were isolated and identified. The neuropeptide substance P (SP) was added in keratocyte differentiation medium (KDM) to evaluate its effect on keratocyte differentiation of PDLSCs. PDLSCs were then seeded on patterned silk membrane and cultured with KDM and SP...
November 13, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29132311/weighted-gene-co-expression-network-analysis-of-expression-data-of-monozygotic-twins-identifies-specific-modules-and-hub-genes-related-to-bmi
#12
Weijing Wang, Wenjie Jiang, Lin Hou, Haiping Duan, Yili Wu, Chunsheng Xu, Qihua Tan, Shuxia Li, Dongfeng Zhang
BACKGROUND: The therapeutic management of obesity is challenging, hence further elucidating the underlying mechanisms of obesity development and identifying new diagnostic biomarkers and therapeutic targets are urgent and necessary. Here, we performed differential gene expression analysis and weighted gene co-expression network analysis (WGCNA) to identify significant genes and specific modules related to BMI based on gene expression profile data of 7 discordant monozygotic twins. RESULTS: In the differential gene expression analysis, it appeared that 32 differentially expressed genes (DEGs) were with a trend of up-regulation in twins with higher BMI when compared to their siblings...
November 13, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29131290/nesfatin-1-levels-in-patients-with-slow-coronary-flow
#13
Mevlüt Serdar Kuyumcu, Aliye Kuyumcu, Çağrı Yayla, Mustafa Bilal Özbay, Mehmet Alagöz, Sefa Ünal, Burak Açar, Özcan Özeke, Gülhan Samur
BACKGROUND: Nesfatin-1 is a novel found anorectic neuropeptide with potent metabolic regulatory effects. AIM: We aimed to evaluate the relationship between Nesfatin-1 levels and slow coronary flow (SCF). METHODS: A total of 60 consecutive patients with SCF and 60 consecutive patients with the normal coronary flow (NCF) were enrolled into the study. Nesfatin-1 level was measured from blood serum samples using enzyme-linked immunosorbent assay test...
November 13, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/29131060/aging-induced-modulation-of-pituitary-adenylate-cyclase-activating-peptide-and-vasoactive-intestinal-peptide-induced-vasomotor-responses-in-the-arteries-of-mice
#14
Ivan Ivic, Margit Solymar, Balazs D Fulop, Hitoshi Hashimoto, Gabor Toth, Andrea Tamas, Tamas Juhasz, Akos Koller, Dora Reglodi
Pituitary adenylate cyclase-activating peptide (PACAP; 1-38 and 1-27) and vasoactive intestinal peptide (VIP) are related neuropeptides of the secretin/glucagon family. Overlapping signaling through G-protein-coupled receptors mediates their vasomotor activity. We previously showed that PACAP deficiency (PACAP-KO) shifts the mechanisms of vascular response and maintains arterial relaxation through the VIP backup mechanism and (mainly) its VPAC1R, but their age-dependent modulation is still unknown. We hypothesized that backup mechanisms exist, which maintain the vasomotor activity of these peptides also in older age...
November 9, 2017: Journal of Vascular Research
https://www.readbyqxmd.com/read/29130940/neuropeptide-y-regulates-a-vascular-gateway-for-hematopoietic-stem-and-progenitor-cells
#15
Pratibha Singh, Jonathan Hoggatt, Malgorzata M Kamocka, Khalid S Mohammad, Mary R Saunders, Hongge Li, Jennifer Speth, Nadia Carlesso, Theresa A Guise, Louis M Pelus
Endothelial cells (ECs) are components of the hematopoietic microenvironment and regulate hematopoietic stem and progenitor cell (HSPC) homeostasis. Cytokine treatments that cause HSPC trafficking to peripheral blood are associated with an increase in dipeptidylpeptidase 4/CD26 (DPP4/CD26), an enzyme that truncates the neurotransmitter neuropeptide Y (NPY). Here, we show that enzymatically altered NPY signaling in ECs caused reduced VE-cadherin and CD31 expression along EC junctions, resulting in increased vascular permeability and HSPC egress...
November 13, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29130939/open-the-gates-vascular-neurocrine-signaling-mobilizes-hematopoietic-stem-and-progenitor-cells
#16
Tomer Itkin, Jésus María Gómez-Salinero, Shahin Rafii
Mobilization of hematopoietic stem and progenitor cells (HSPCs) from the bone marrow (BM) into the peripheral blood is a complex process that is enhanced dramatically under stress-induced conditions. A better understanding of how the mobilization process is regulated will likely facilitate the development of improved clinical protocols for stem cell harvesting and transplantation. In this issue of the JCI, Singh et al. (1) showed that the truncated cleaved form of neurotransmitter neuropeptide Y (NPY) actively promotes a breach of BM vascular sinusoidal portals, thereby augmenting HSPC trafficking to the circulation...
November 13, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29129776/glucagon-like-peptide-1-glp-1-and-neurotransmitters-signaling-in-epilepsy-an-insight-review
#17
REVIEW
Prashant Koshal, Sumit Jamwal, Puneet Kumar
Epilepsy is one of the most prevalent neurological disorder affecting more than 50 million people worldwide. Numerous studies have suggested that an imbalance in glutamatergic (excitatory) and GABAergic (inhibitory) neurotransmitter system is one of the dominating pathophysiological mechanisms underlying the occurrence and progression of seizures. Further, this alteration in GABAergic and glutamatergic system disrupts the delicate balance of other neurotransmitters system in the brain. Emerging strides have documented the protective role of GLP-1 signaling on altered neurotransmitters signaling in Epilepsy and associated co-morbidities...
November 9, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29129406/neuropeptide-y-y2-antagonist-treated-ovariectomized-mice-exhibit-greater-bone-mineral-density
#18
K L Seldeen, P G Halley, C H Volmar, M A Rodríguez, M Hernandez, M Pang, S K Carlsson, L J Suva, C Wahlestedt, B R Troen, S P Brothers
Osteoporosis, a disease characterized by progressive bone loss and increased risk of fracture, often results from menopausal loss of estrogen in women. Neuropeptide Y has been shown to negatively regulate bone formation, with amygdala specific deletion of the Y2 receptor resulting in increased bone mass in mice. In this study, ovariectomized (OVX) mice were injected once daily with JNJ-31020028, a brain penetrant Y2 receptor small molecule antagonist to determine the effects on bone formation. Antagonist treated mice had reduced weight and showed increased whole-body bone mineral density compared to vehicle-injected mice...
November 7, 2017: Neuropeptides
https://www.readbyqxmd.com/read/29129052/synthesis-and-evaluation-of-orexin-1-receptor-antagonists-with-improved-solubility-and-cns-permeability
#19
David A Perrey, Ann M Decker, Yanan Zhang
Orexins are hypothalamic neuropeptides playing important roles in many functions including the motivation of addictive behaviors. Blockade of the orexin-1 receptor has been suggested as a potential strategy for the treatment of drug addiction. We have previously reported OX1 receptor antagonists based on the tetrahydroisoquinoline scaffold with excellent OX1 potency and selectivity; however, these compounds had high lipophilicity (clogP > 5) and low to moderate solubility. In an effort to improve their properties, we have designed and synthesized a series of analogs where the 7-position substituents known to favor OX1 potency and selectivity were retained, and groups of different nature were introduced at the 1-position where substitution was generally tolerated as demonstrated in previous studies...
November 11, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29128909/central-noradrenergic-activity-affects-analgesic-effect-of-neuropeptide-s
#20
Kei Jinushi, Tetsuya Kushikata, Takashi Kudo, Girolamo Calo, Remo Guerrini, Kazuyoshi Hirota
BACKGROUND: Neuropeptide S (NPS) is an endogenous neuropeptide controlling anxiolysis, wakefulness, and analgesia. NPS containing neurons exist near to the locus coeruleus (LC) involved in the descending anti-nociceptive system. NPS interacts with central noradrenergic neurons; thus brain noradrenergic signaling may be involved in NPS-induced analgesia. We tested NPS analgesia in noradrenergic neuron-lesioned rats using a selective LC noradrenergic neurotoxin, N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine (DSP-4)...
November 11, 2017: Journal of Anesthesia
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