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https://www.readbyqxmd.com/read/29148216/reproductive-and-neurobehavioral-effects-of-maternal-exposure-to-ethiprole-in-f1-generation-mice
#1
Toyohito Tanaka, Toshinari Suzuki, Akiko Inomata
BACKGROUND: Few published studies are reported for neurobehavioral toxicity of the phenylpyrazole insecticide ethiprole in mammals. This study was designed to evaluate the reproductive and neurobehavioral effects of maternal exposure to ethiprole in mice. METHODS: Ethiprole was given in the diet to provide levels of 0 (control), 0.0002, 0.001, and 0.005% during the gestation and lactation periods. Selected reproductive and neurobehavioral parameters were measured in the F1 generation...
November 17, 2017: Birth defects research
https://www.readbyqxmd.com/read/29146463/age-dependent-in-vitro-metabolism-of-bifenthrin-in-rat-and-human-hepatic-microsomes
#2
Gopinath C Nallani, Appavu Chandrasekaran, Kelem Kassahun, Li Shen, Shaaban F ElNaggar, Zhiwei Liu
Bifenthrin, a pyrethroid insecticide, undergoes oxidative metabolism leading to the formation of 4'-hydroxy-bifenthrin (4'-OH-BIF) and hydrolysis leading to the formation of TFP acid in rat and human hepatic microsomes. In this study, age-dependent metabolism of bifenthrin in rats and humans were determined via the rates of formation of 4'-OH-BIF and TFP acid following incubation of bifenthrin in juvenile and adult rat (PND 15 and PND 90) and human (<5years and >18years) liver microsomes. Furthermore, in vitro hepatic intrinsic clearance (CLint) of bifenthrin was determined by substrate consumption method in a separate experiment...
November 13, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29146408/paroxetine-blunts-the-corticosterone-response-to-swim-induced-stress-and-increases-depressive-like-behavior-in-a-rat-model-of-postpartum-depression
#3
Agnete Overgaard, Stephanie E Lieblich, Robin Richardson, Liisa A M Galea, Vibe G Frokjaer
Perinatal depression (PND) affects 15% of women. During the perinatal period both stress- and gonadal hormones fluctuate widely. Putatively, these fluctuations are involved in PND disease mechanisms. The serotonin system is sensitive to such hormone fluctuations, and serotonin reuptake inhibitors (SSRIs) are used to treat PND, although treatment is suboptimal and it is not known at which peripartum time-point SSRI treatment may be most efficacious. In this study, we investigate the effect of the SSRI paroxetine (5mg/kgs...
October 31, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29131068/maternal-cannabinoid-use-alters-cannabinoid-cb1-and-endothelin-etb-receptor-expression-in-the-brains-of-dams-but-not-their-offspring
#4
Aarti Amlani, Mary G Hornick, Kevin Cooper, Preetha Prazad, Ramona Donovan, Anil Gulati
According to the 2015 National Survey on Drug Use and Health, cannabis (marijuana) is the most commonly used recreational drug in the US. Among pregnant women aged 14-55 years, 3.4% were cannabis users. Presently, little is known about the neurodevelopmental effect of cannabis use during pregnancy and/or nursing on neonates. Endothelin (ET) is essential for normal development of the central nervous system (CNS). Decreases in ETB receptor expression correlate with a decline in nerve growth factor (NGF) and an increase in vascular endothelial growth factor (VEGF) in postnatal brain...
November 4, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/29124982/pre-gestational-thalassemia-screening-in-mainland-china-the-first-two-years-of-a-preventive-program
#5
Fan Jiang, Gui-Lan Chen, Jian Li, Xing-Mei Xie, Jian-Ying Zhou, Can Liao, Dong-Zhi Li
In this study, we report the experience of a pre gestational thalassemia screening program at a single center in Southern China. Free thalassemia screening, genetic counseling and prenatal diagnosis (PND) for couples planning pregnancy were implemented over a 2-year period. Among a total of 83,062 screened individuals (41,531 couples), the allele frequencies of β-thalassemia (β-thal), - -(SEA) and - -(THAI) deletions were 3.79, 5.75 and 0.028%, respectively. Out of the 41,531 couples, 11,039 couples had at least one partner who had a positive screening test; of these, 455 at-risk couples (1...
November 10, 2017: Hemoglobin
https://www.readbyqxmd.com/read/29121436/association-of-dental-and-maxillary-sinus-pathologies-with-ear-nose-and-throat-symptoms
#6
Rachel Horwitz Berkun, David Polak, Lior Shapira, Ron Eliashar
OBJECTIVES: To investigate the correlation between cone beam computerized tomography (CBCT) findings in the maxillary sinus, Ear-Nose-Throat (ENT) symptoms and dental pathologies in asymptomatic patients. MATERIALS AND METHODS: A total 81 patients were referred for CBCT and filled a standard ENT visual analog scale (VAS) questionnaire. CBCT images were analyzed for sinus ostium obstruction, Schneiderian membrane thickening, sinus floor turbidity and the presence of polyps...
November 9, 2017: Oral Diseases
https://www.readbyqxmd.com/read/29121345/early-postnatal-exposure-to-airborne-fine-particulate-matter-induces-autism-like-phenotypes-in-male-rats
#7
Kang Li, Li Li, Bo Cui, Zhihui Gai, Qiuyue Li, Shumei Wang, Jun Yan, Bencheng Lin, Lei Tian, Huanliang Liu, Xiaohua Liu, Zhuge Xi
Epidemiological studies have revealed that ambient fine particulate matter (PM2.5) exposure is closely associated with autism spectrum disorder (ASD). However, there is a relative paucity of laboratory data to support this epidemic finding. In order to assess the relationship between PM2.5 exposure and ASD, neonatal male Sprague-Dawley (SD) rats were chosen and exposed to PM2.5 (2 or 20 mg/kg body weight, once a day) by intranasal instillation from postnatal day (PND) 8 to 22. It was found that when exposed to PM2...
November 7, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29116466/breast-cancer-related-paraneoplastic-neurologic-disease
#8
Brittany L Murphy, Nicholas L Zalewski, Amy C Degnim, Andrew McKeon, Eoin P Flanagan, Sean J Pittock, Elizabeth B Habermann
PURPOSE: Paraneoplastic neurologic disease (PND) is an aberrant immune-mediated response against the nervous system triggered by malignancy. Given the rarity, a paucity of data describing breast cancer-related PND (BC-PND) exists; we sought to further examine this specific patient population. METHODS: We retrospectively identified patients at our institution from 1997 to 2016 with BC-PND. Retrospective review with a descriptive analysis determined factors associated with PND and BC, which were compared to national breast cancer median of age (61 years) and average stage at diagnosis (60% local disease)...
November 7, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29109058/homer2-within-the-central-nucleus-of-the-amygdala-modulates-withdrawal-induced-anxiety-in-a-mouse-model-of-binge-drinking
#9
K M Lee, M A Coelho, K R Sern, K K Szumlinski
A history of binge-drinking decreases protein expression of the glutamate-related scaffolding protein Homer2 within the central nucleus of the amygdala (CEA), coinciding with behavioral signs of negative affect. To assess the functional relevance of this protein change for withdrawal-induced hyper-anxiety, adult (PND 56) and adolescent (PND 28) male C57BL/6J mice were administered an intra-CEA infusion of an adeno-associated viral vector (AAV) carrying either cDNA to express Homer2 (H2-cDNA) or GFP as control...
November 3, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29107676/perinatal-exposure-to-low-dose-2-2-4-4-tetrabromodiphenyl-ether-bde-47-alters-sperm-dna-methylation-in-adult-rats
#10
Alexander Suvorov, Alex Shershebnev, Haotian Wu, Yulia Medvedeva, Oleg Sergeyev, J Richard Pilsner
Polybrominated diphenyl ethers (PBDEs) are a group of ubiquitous reproductive toxins. Given that spermatogenesis requires extensive epigenetic changes, we hypothesize that PBDEs impact sperm DNA methylation. Pregnant Wistar rats were exposed perinatally to 0.2mg/kg 2,2',4,4'-tetrabromodiphenyl ether (BDE-47) and caudal epididymal sperm were collected from offspring on postnatal days (PNDs) 65 and 120. Libraries were prepared from sperm DNA and sequenced with an average of 18.0 million unique reads per sample...
October 28, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/29107071/role-of-tlr4-in-olfactory-based-spatial-learning-activity-of-neonatal-mice-after-developmental-exposure-to-diesel-exhaust-origin-secondary-organic-aerosol
#11
Nay Chi Nway, Yuji Fujitani, Seishiro Hirano, Ohn Mar, Tin-Tin Win-Shwe
Exposure to ambient air pollutants has been reported to have various adverse health impacts. Ambient particulate matter comprises primary particles released directly via engine exhaust and secondary organic aerosols (SOAs) formed from oxidative reactions of the ultrafine particle fraction of diesel exhaust (DE). Toll-like receptor 4 (TLR4) is well known to initiate the inflammatory cascade in the central nervous system. However, whether and how DE and DE-SOA exposure influences TLR4 signaling in the immature brain remains unclear...
October 26, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/29098186/chronic-adolescent-%C3%AE-9-tetrahydrocannabinol-treatment-of-male-mice-leads-to-long-term-cognitive-and-behavioral-dysfunction-which-are-prevented-by-concurrent-cannabidiol-treatment
#12
Michelle Murphy, Sierra Mills, Joanna Winstone, Emma Leishman, Jim Wager-Miller, Heather Bradshaw, Ken Mackie
Introduction: The high prevalence of adolescent cannabis use, the association between this use and later psychiatric disease, and increased access to high-potency cannabis highlight the need for a better understanding of the long-term effects of adolescent cannabis use on cognitive and behavioral outcomes. Furthermore, increasing Δ(9)-tetrahydrocannabinol (THC) in high-potency cannabis is accompanied by a decrease in cannabidiol (CBD), thus an understanding of the interactions between CBD and THC in the neurodevelopmental effects of THC is also important...
2017: Cannabis and Cannabinoid Research
https://www.readbyqxmd.com/read/29098176/transient-prepubertal-mifepristone-treatment-normalizes-deficits-in-contextual-memory-and-neuronal-activity-of-adult-male-rats-exposed-to-maternal-deprivation
#13
Manila Loi, Ratna Angela Sarabdjitsingh, Andromachi Tsouli, Stephanie Trinh, Marit Arp, Harmen J Krugers, Henk Karst, Ruud van den Bos, Marian Joëls
Early life adversity is a well-known risk factor for behavioral dysfunction later in life, including the formation of contextual memory; it is also (transiently) accompanied by hyperactivity of the stress system. We tested whether mifepristone (MIF) treatment, which among other things blocks glucocorticoid receptors (GRs), during the prepubertal period [postnatal days (PND)26-PND28] normalizes memory deficits in adult male rats exposed to 24-h maternal deprivation (MD) at PND3. MD reduced body weight gain and increased basal corticosterone (CORT) levels during the PND26, but not in adulthood...
September 2017: ENeuro
https://www.readbyqxmd.com/read/29097150/prenatal-bisphenol-a-bpa-exposure-alters-the-transcriptome-of-the-neonate-rat-amygdala-in-a-sex-specific-manner-a-clarity-bpa-consortium-study
#14
Sheryl E Arambula, Dereje Jima, Heather B Patisaul
Bisphenol A (BPA) is a widely recognized endocrine disruptor prevalent in many household items. Because experimental and epidemiological data suggest links between prenatal BPA exposure and altered affective behaviors in children, even at levels below the current US FDA No Observed Adverse Effect Level (NOAEL) of 5mg/kg body weight (bw)/day, there is concern that early life exposure may alter neurodevelopment. The current study was conducted as part of the CLARITY-BPA (Consortium Linking Academic and Regulatory Insights on BPA Toxicity) program and examined the full amygdalar transcriptome on postnatal day (PND) 1, with the hypothesis that prenatal BPA exposure would alter the expression of genes and pathways fundamental to sex-specific affective behaviors...
October 28, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/29094875/heart-failure-with-preserved-ejection-fraction-diagnosis-and-management
#15
John D Gazewood, Patrick L Turner
Heart failure with preserved ejection fraction, also referred to as diastolic heart failure, causes almost one-half of the 5 million cases of heart failure in the United States. It is more common among older patients and women, and results from abnormalities of active ventricular relaxation and passive ventricular compliance, leading to a decline in stroke volume and cardiac output. Heart failure with preserved ejection fraction should be suspected in patients with typical symptoms (e.g., fatigue, weakness, dyspnea, orthopnea, paroxysmal nocturnal dyspnea, edema) and signs (S3 heart sound, displaced apical pulse, and jugular venous distension) of chronic heart failure...
November 1, 2017: American Family Physician
https://www.readbyqxmd.com/read/29092056/effects-of-exposure-to-the-endocrine-disrupting-chemical-bisphenol-a-during-critical-windows-of-murine-pituitary-development
#16
Kirsten S Eckstrum, Whitney Edwards, Annesha Banerjee, Wei Wang, Jodi A Flaws, John A Katzenellenbogen, Sung Hoon Kim, Lori T Raetzman
Critical windows of development are often more sensitive to endocrine disruption. The murine pituitary gland has two critical windows of development: embryonic gland establishment and neonatal hormone cell expansion. During embryonic development, one environmentally ubiquitous endocrine disrupting chemical (EDC), bisphenol A (BPA), has been shown to alter pituitary development by increasing proliferation and gonadotrope number in females, but not males. However, the effects of exposure during the neonatal period were not examined...
October 6, 2017: Endocrinology
https://www.readbyqxmd.com/read/29077836/the-hypothalamic-inflammatory-gliosis-response-to-neonatal-overnutrition-is-sex-and-age-dependent
#17
Pilar Argente-Arizón, Francisca Díaz, Purificación Ros, Vicente Barrios, Manuel Tena-Sempere, Luis Miguel García-Segura, Jesús Argente, Julie A Chowen
Astrocytes participate in both physiological and pathophysiological responses to metabolic and nutrient signals. While most studies have focused on the astrocytic response to weight gain due to high fat/high carbohydrate intake, surplus intake of a balanced diet also induces excess weight gain. We have accessed the effects of neonatal overnutrition, which has both age and sex dependent effects on weight gain, on hypothalamic inflammation/gliosis. Although both male and female Wistar rats accumulate excessive fat mass as early as postnatal day (PND) 10 with neonatal overnutrition no increase in hypothalamic cytokine levels, markers of astrocytes or microglia, or inflammatory signaling pathways were observed...
October 25, 2017: Endocrinology
https://www.readbyqxmd.com/read/29074097/behavioral-effects-of-early-life-maternal-trauma-witness-in-rats
#18
Hesong Liu, Gaurav Patki, Ankita Salvi, Matthew Kelly, Samina Salim
BACKGROUND: Earlier, we have reported that post-traumatic stress disorder (PTSD)-like behaviors developed in rats that witnessed their cage mates undergo repeated traumatic stress. More recently, we published that early life physical traumatic stress leads to later life depression-like behaviors in rats. Whether early life trauma witness causes later life PTSD-like behaviors is not known. Also unclear are sex-specific stress-induced behavioral variations in later life. The early life witness component of stress is an important aspect of stress-induced psychopathologies and must be investigated...
October 24, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29073309/thinking-outside-the-checkbox
#19
Maki Kanamori, Gurpreet Dhaliwal, Masami Matsumura, Bradley Monash
A 34-year-old, previously healthy Japanese man developed a dry cough. He did not have dyspnea, nasal discharge, sore throat, facial pain, nasal congestion, or postnasal drip. His symptoms persisted despite several courses of antibiotics (from different physicians), including clarithromycin, minocycline, and levofl oxacin. A chest x-ray after 2 months of symptoms and a noncontrast chest computed tomography (CT) after 4 months of symptoms were normal, and bacterial and mycobacterial sputum cultures were sterile...
October 18, 2017: Journal of Hospital Medicine: An Official Publication of the Society of Hospital Medicine
https://www.readbyqxmd.com/read/29071226/pharmacological-properties-of-vochysia-haenkeana-vochysiaceae-extract-to-neutralize-the-neuromuscular-blockade-induced-by-bothropstoxin-i-lys49-phospholipase-a2-myotoxin
#20
Carolina Harder, Akila Lara de Oliveira, Andreia Borges Scriboni, Adélia Cristina Oliveira Cintra, Raphael Schezaro-Ramos, Márcio Galdino Dos Santos, Karina Cogo-Müller, Regina Yuri Hashimoto Miura, Rafael Stuani Floriano, Sandro Rostelato-Ferreira, Yoko Oshima-Franco
Purpose: Bothrops snakes are responsible for more than 70 % of snakebites every year in Brazil and their venoms cause severe local and systemic damages. The pharmacological properties of medicinal plants have been widely investigated in order to discover new alternative treatments for different classes of diseases including neglected tropical diseases as envenomation by snakebites. In this work, we have investigated the ability of Vochysia haenkeana stem barks extract (VhE) to neutralize the neuromuscular effects caused by Bothropstoxin-I (BthTX-I), the major phospholipase A2 (PLA2) myotoxin from B...
September 2017: Advanced Pharmaceutical Bulletin
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