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Marion Souchal, Ludimila Labanca, Sirley Alves da Silva Carvalho, Luciana Macedo de Resende, Christelle Blavignac, Paul Avan, Fabrice Giraudet
Damage to cochlear outer hair cells (OHCs) usually affects frequency selectivity in proportion to hearing threshold increase. However, the current clinical heuristics that attributes poor hearing performance despite near-normal auditory sensitivity to auditory neuropathy or "hidden" synaptopathy overlooks possible underlying OHC impairment. Here, we document the part played by OHCs in influencing suprathreshold auditory performance in the presence of noise in a mouse model of progressive hair cell degeneration, the CD1 strain, at postnatal day 18-30 stages when high-frequency auditory thresholds remained near-normal...
2018: BioMed Research International
Shengpan Chen, Lianhua Zhao, Prativa Sherchan, Yan Ding, Jing Yu, Derek Nowrangi, Jiping Tang, Ying Xia, John H Zhang
BACKGROUND: Neuroinflammation plays an important role in the pathogenesis of intracerebral hemorrhage (ICH)-induced secondary brain injury. Activation of melanocortin receptor 4 (MC4R) has been shown to elicit anti-inflammatory effects in many diseases. The objective of this study was to explore the role of MC4R activation on neuroinflammation in a mouse ICH model and to investigate the contribution of adenosine monophosphate-activated protein kinase (AMPK)/c-Jun N-terminal kinase (JNK)/p38 mitogen-activated protein kinase (p38 MAPK) pathway in MC4R-mediated protection...
April 11, 2018: Journal of Neuroinflammation
Günther Schönrich, Martin J Raftery
Some of the clinically most important viruses persist in the human host after acute infection. In this situation, the host immune system and the viral pathogen attempt to establish an equilibrium. At best, overt disease is avoided. This attempt may fail, however, resulting in eventual loss of viral control or inadequate immune regulation. Consequently, direct virus-induced tissue damage or immunopathology may occur. The cluster of differentiation 1 (CD1) family of non-classical major histocompatibility complex class I molecules are known to present hydrophobic, primarily lipid antigens...
2018: Frontiers in Immunology
Yumiko Yamada, Masumi Endou, Shunichi Morikawa, Jun Shima, Noriko Komatshzaki
The aim of this study was to examine the effect of heat-killed Lactobacillus paracasei NFRI 7415 on kidney and bone in mice fed an ethanol-containing diet with stress. Eight-week-old Cril  :  CD1 mice were fed a control diet (CD), an alcohol diet (AD) (35.8% of total energy from ethanol), or an alcohol diet containing 20% heat-killed Lb. paracasei NFRI 7415 (107  CFU/g) (LD) for 4 weeks. Mice in the AD and LD groups also underwent restraint stress for two weeks from 13 days. The mice were placed in a 50 mL plastic tube, which had a small hole drilled around its base to allow ventilation, and restrained for 1 h every day...
2018: Journal of Nutrition and Metabolism
Gianluca Magi, Giunio Bruto Cherubini, Olivier Taeymans
One cat was presented for investigation of urinary retention and constipation and a second cat was presented with decreased appetite, reluctance to jump, reduced level of activity, and constipation. Magnetic resonance imaging revealed dorsal bulging of the hypo-intense intervertebral disc at S3-Cd1 on fast spin echo T2. Dorsal laminectomy was performed and both cats recovered with resolution of neurological signs.
April 2018: Canadian Veterinary Journal. la Revue Vétérinaire Canadienne
Alessandro Feis, Barry D Howes, Lisa Milazzo, Daniela Coppola, Giulietta Smulevich
The ligand binding characteristics of heme-containing proteins are determined by a number of factors, including the nature and conformation of the distal residues and their capability to stabilize the heme-bound ligand via hydrogen-bonding and electrostatic interactions. In this regard, the heme pockets of truncated hemoglobins (TrHbs) constitute an interesting case study as they share many common features, including a number of polar cavity residues. In this review, we will focus on three proteins of group II TrHbs, from Thermobifida fusca (Tf-HbO) and Pseudoalteromonas haloplanktis TAC125 (Ph-HbO)...
March 30, 2018: Biopolymers
Malte Heykants, Hagen Scherb, Geert Michel, Esther Mahabir
We determined the effect of monogamous or polygamous mating with 2 females on vaginal plug (VP) rate, embryo donors (ED), 2-cell embryo production, and male performance after superovulation of females aging 24d or 45-48d. C57BL/6NCrl (B6N), BALB/cAnCrl (BALB/cN), FVB/NCrl (FVB/N), and Crl:CD1(ICR) (CD-1) females received 5 IU eCG and 5 IU hCG (24d) or 7.5 IU eCG and 7.5 IU hCG (45-48d) 48 h apart. After the hCG injection, females were paired with males, which alternated weekly in monogamous or polygamous mating...
March 17, 2018: Theriogenology
Pragya D Yadav, Vimal Kumar, Sandeep Kumar, Chandrashekhar S Mote, Triparna D Majumdar, Mangesh Gokhale, Pravin Kore, Devendra T Mourya
OBJECTIVES: The objective of this study was to understand natural disease progression in infant CD1 mice after the bite of Aedes aegypti mosquitoes infected by the Zika virus (ZIKV, MR-766 strain). METHODS: A. aegypti mosquitoes were experimentally infected with ZIKV MR-766 strain via the oral feeding route. Infected mosquitoes were allowed to feed on infant CD1 mice. Sick mice were euthanized, and their organs were collected and subjected to real-time RT-PCR, histo-pathology, and immunohistochemistry...
March 29, 2018: Intervirology
Jun Zhang, Yan Wang, Lin Fu, Yu-Jie Feng, Yan-Li Ji, Hua Wang, De-Xiang Xu
Cadmium (Cd) is a persistent environmental and occupational contaminant that accumulates in humans and shows adverse effects on health. Accumulating evidence reveals that environmental Cd exposure is associated with hepatic lipid accumulation and metabolic alterations in adult male mice. However, whether Cd exposure induces hepatic lipid accumulation and metabolic alterations in female mice remains poorly understood. In the present study, we aimed to investigate the effects of Cd exposure on insulin resistance, hepatic lipid accumulation and associated metabolic pathways...
March 24, 2018: Journal of Applied Toxicology: JAT
Akhil Jain, Pierrick G J Fournier, Vladimir Mendoza-Lavaniegos, Prakhar Sengar, Fernando M Guerra-Olvera, Enrique Iñiguez, Thomas G Kretzschmar, Gustavo A Hirata, Patricia Juárez
BACKGROUND: Breast cancer is the second leading cause of cancer death among women and represents 14% of death in women around the world. The standard diagnosis method for breast tumor is mammography, which is often related with false-negative results leading to therapeutic delays and contributing indirectly to the development of metastasis. Therefore, the development of new tools that can detect breast cancer is an urgent need to reduce mortality in women. Here, we have developed Gd2 O3 :Eu3+ nanoparticles functionalized with folic acid (FA), for breast cancer detection...
March 22, 2018: Journal of Nanobiotechnology
Alba Finocchiaro, Sara Marinelli, Federica De Angelis, Valentina Vacca, Siro Luvisetto, Flaminia Pavone
Clinical use of neurotoxins from Clostridium botulinum is well established and is continuously expanding, including in treatment of pain conditions. Background : The serotype A (BoNT/A) has been widely investigated, and current data demonstrate that it induces analgesia and modulates nociceptive processing initiated by inflammation or nerve injury. Given that data concerning the serotype B (BoNT/B) are limited, the aim of the present study was to verify if also BoNT/B is able not only to counteract neuropathic pain, but also to interfere with inflammatory and regenerative processes associated with the nerve injury...
March 18, 2018: Toxins
Luc Teyton
Research to connect lipids with immunology is growing, but details about the specific roles of lipid transfer proteins in antigen presentation remain unclear. A single class of major histocompatibility class-like molecules, called CD1 molecules, can present lipids and glycolipids to the immune system. These molecules all have a common hydrophobic antigen-binding groove. The loading of this groove with various lipids throughout the life of a CD1 molecule defines the immune recognition of lipids by T cells. At each location of residence, CD1 molecules are exposed to particular physico-chemical conditions, particular collections of lipids, and unique combinations of lipid transfer proteins that will define which lipid binds to CD1 and which do not...
March 19, 2018: Journal of Lipid Research
Marilena Marraudino, Mariangela Martini, Sara Trova, Alice Farinetti, Giovanna Ponti, Stefano Gotti, GianCarlo Panzica
The kisspeptin system is clustered in two main groups of cell bodies (the periventricular region, RP3V and the arcuate nucleus, ARC) that send fibers mainly to the GnRH neurons and in a few other locations, including the paraventricular nucleus, PVN. In physiological conditions, gonadal hormones modulate the kisspeptin system with expression changes according to different phases of the estrous cycle: the highest being in estrus phase in RP3V and PVN (positive feedback), and in ARC during the diestrus phase (negative feedback)...
March 16, 2018: Brain Research
Vanessa L Oliver, Sarah E Thurston, Jennifer L Lofgren
Recent studies have revealed some of the most frequently used analgesics in mice are not effectively treating postoperative pain. Our laboratory sought to compare and assess the validity and reliability of 2 cageside pain assessments that we recently developed for use in mice-nesting consolidation and grooming transfer tests. We then applied these tests to compare the efficacy of commonly used analgesics-buprenorphine (0.1 mg/kg SC every 12 h for 48 h) and carprofen (30 mg/kg in drinking water for 72 h)-alone and in multimodal combination as a refinement for treating postoperative pain in mice...
March 1, 2018: Journal of the American Association for Laboratory Animal Science: JAALAS
Amy L Robinson-Junker, Bruce F O'hara, Brianna N Gaskill
Sleep disruption in humans, caused by shift work, can be detrimental to physical and behavioral health. Nocturnal laboratory mice may experience a similar disruption caused by human daytime activities, but whether this disruption affects their welfare is unknown. We used 48 mice (CD1, C57BL/6, and BALB/c of both sexes) in a factorial design to test a sleep disruption treatment, in which mice were disturbed by providing routine husbandry at either 1000 or 2200 during a 12:12-h light:dark cycle, with lights on at 0700...
March 1, 2018: Journal of the American Association for Laboratory Animal Science: JAALAS
Francesco Spinelli, Ahmed Haider, Annamaria Toscano, Maria Laura Pati, Claudia Keller, Francesco Berardi, Nicola Antonio Colabufo, Carmen Abate, Simon M Ametamey
The Sigma-1 receptor (Sig-1R) has been described as a pluripotent modulator of distinct physiological functions and its involvement in various central and peripheral pathological disorders has been demonstrated. However, further investigations are required to understand the complex role of the Sig-1R as a molecular chaperon. A specific PET radioligand would provide a powerful tool in Sig-1R related studies. As part of our efforts to develop a Sig-1R PET radioligand that shows antagonistic properties, we investigated the suitability of 1-(4-(6-methoxynaphthalen-1-yl)butyl)-4-methylpiperidine (designated PB212) for imaging Sig-1R...
2018: American Journal of Nuclear Medicine and Molecular Imaging
Frederick Bonsack, Catherine A Foss, Ali S Arbab, Cargill H Alleyne, Martin G Pomper, Sangeetha Sukumari-Ramesh
Intracerebral hemorrhage (ICH) is a fatal stroke subtype with significant public health impact. Although neuroinflammation is a leading cause of neurological deficits after ICH, no imaging tool is currently available to monitor brain inflammation in ICH patients. Given the role of TSPO in neuroinflammation, herein we investigate whether a second-generation TSPO ligand, [125 I]IodoDPA-713 can be used to monitor the changes in TSPO expression in a preclinical model of intracerebral hemorrhage. Male CD1 mice were subjected to ICH/Sham...
2018: Frontiers in Neuroscience
Matthew C Altman, Elizabeth Whalen, Alkis Togias, George T O'Connor, Leonard B Bacharier, Gordon R Bloomberg, Meyer Kattan, Robert A Wood, Scott Presnell, Petra LeBeau, Katy Jaffee, Cynthia M Visness, William W Busse, James E Gern
BACKGROUND: Childhood asthma in inner city populations is a major public health burden and understanding early life immune mechanisms that promote asthma onset is key to disease prevention. Children who develop asthma demonstrate a high prevalence of aeroallergen sensitization and T helper 2 (Th2)-type inflammation, however the early life immune events that lead to Th2 skewing and disease development are unknown. OBJECTIVE: We sought to use RNA sequencing of peripheral blood mononuclear cells (PBMCs) collected at age 2 to determine networks of immune responses that occur in children who develop allergy and asthma...
March 5, 2018: Journal of Allergy and Clinical Immunology
Antonio Garrido, Julia Cruces, Noemí Ceprián, Mónica De la Fuente
The social environment can affect the regulatory systems, and cohabitation with sick subjects is a negative factor for the nervous and immune systems, compromising the lifespan. Nevertheless, the possible beneficial effects of a positive social environment on nervous and immune functions and longevity have not yet been studied. The aim of the present work was to analyze several behavioral and immune function parameters and lifespan in old mice after their cohabitation with adult animals. Old and adult ICR-CD1 female mice were divided into three experimental groups: adult controls, old controls and a social environment experimental group...
March 1, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
Sílvia Castany, Georgia Gris, José Miguel Vela, Enrique Verdú, Pere Boadas-Vaello
Sigma-1 receptor (σ1 R) knockout (KO) CD1 mice, generated by homologous recombination, and separate pharmacological studies in wild type (WT) mice were done to investigate the role of this receptor in the development of pain-related behaviours (thermal hyperalgesia and mechanical allodynia) in mice after spinal cord contusion injury (SCI) - a model of central neuropathic pain. The modulatory effect of σ1 R KO on extracellular mediators and signalling pathways in the spinal cord was also investigated. In particular, changes in the expression of inflammatory cytokines (tumour necrosis factor TNF-α, interleukin IL-1β) and both the expression and activation (phosphorylation) of the N-methyl-D-aspartate receptor subunit 2B (NR2B-NMDA) and extracellular signal-regulated kinases (ERK1/2) were analysed...
March 1, 2018: Scientific Reports
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