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https://www.readbyqxmd.com/read/29344080/effects-of-huang-bai-phellodendri-cortex-on-bone-growth-and-pubertal-development-in-adolescent-female-rats
#1
Sun Haeng Lee, Hyun Jeong Lee, Sung Hyun Lee, Young-Sik Kim, Donghun Lee, Jiu Chun, Jin Yong Lee, Hocheol Kim, Gyu Tae Chang
Background: To evaluate the effects of Huang Bai (Phellodendron amurense) on growth and maturation in adolescent female rats. Methods: Female Sprague-Dawley rats (28 days old; n = 72) were divided into six daily treatment groups: control (distilled water), Huang Bai (100 and 300 mg/kg), recombinant human GH (rhGH; 20 μg/kg), estradiol (1 μg/kg), and triptorelin (100 μg). Body weight, food intake, and vaginal opening were measured daily from postnatal day (PND) 28 to PND 43...
2018: Chinese Medicine
https://www.readbyqxmd.com/read/29343455/adolescent-social-stress-increases-anxiety-like-behavior-and-alters-synaptic-transmission-without-influencing-nicotine-responses-in-a-sex-dependent-manner
#2
Michael J Caruso, Nicole A Crowley, Dana E Reiss, Jasmine I Caulfield, Bernhard Luscher, Sonia A Cavigelli, Helen M Kamens
Early-life stress is a risk factor for comorbid anxiety and nicotine use. Because little is known about the factors underlying this comorbidity, we investigated the effects of adolescent stress on anxiety-like behavior and nicotine responses within individual animals. Adolescent male and female C57BL/6J mice were exposed to chronic variable social stress (CVSS; repeated cycles of social isolation + social reorganization) or control conditions from postnatal days (PND) 25-59. Anxiety-like behavior and social avoidance were measured in the elevated plus-maze (PND 61-65) and social approach-avoidance test (Experiment 1: PND 140-144; Experiment 2: 95-97), respectively...
January 14, 2018: Neuroscience
https://www.readbyqxmd.com/read/29339452/effects-of-colostrum-feeding-method-and-oral-igf1-on-porcine-uterine-development
#3
Ashley F George, Kathleen M Rahman, Dori J Miller, Anne A Wiley, Meredith E Camp, Frank Bartol, Carol A Bagnell
Nursing ensures lactocrine delivery of maternally-derived, milk-borne bioactive factors to offspring, which affects postnatal development of female reproductive tract tissues. Disruption of lactocrine communication for two days from birth (postnatal day = PND 0) by feeding milk replacer in lieu of nursing or consumption of colostrum alters porcine uterine gene expression globally by PND 2 and inhibits uterine gland genesis by PND 14. Here, objectives were to determine effects of: 1) nursing or milk replacer feeding from birth; 2) a single dose of colostrum or milk replacer and method of feeding; and 3) a single feeding of colostrum or milk replacer, with or without oral supplementation of IGF1, administered at birth on aspects of porcine uterine development at 12 h postnatally...
January 16, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29334651/effects-of-perinatal-fluoride-exposure-on-the-expressions-of-mir-124-and-mir-132-in-hippocampus-of-mouse-pups
#4
Jixiang Wang, Yuliang Zhang, Zhenzhen Guo, Rui Li, Xingchen Xue, Zilong Sun, Ruiyan Niu
To investigate the effects of perinatal fluoride exposure on learning and memory ability of mouse offspring, ICR female mice were received different doses of sodium fluoride (0, 25, 50, 100 mg/L NaF) from pregnant day 7 to lactational day 21. Pups were exposed to fluoride through the cord blood and breast milk. Open field test showed that compared to the control group, perinatal fluoride exposure significantly decreased the number of entries into the center zone in 100 mg/L NaF group. In the eight-arm maze test, the number of working memory errors, reference memory errors, and the total arm entries were significantly increased in fluoride treatment groups, compared to the control group...
January 8, 2018: Chemosphere
https://www.readbyqxmd.com/read/29324247/mglu5-dependent-modulation-of-anxiety-during-early-withdrawal-from-binge-drinking-in-adult-and-adolescent-male-mice
#5
Kaziya M Lee, Michal A Coelho, MacKayla A Class, Karen K Szumlinski
Binge alcohol-drinking elicits symptoms of negative affect such as anxiety upon cessation, which is a source of negative reinforcement for perpetuating this pattern of alcohol abuse. Binge-induced anxiety during early (24 h) withdrawal is associated with increased expression of metabotropic glutamate receptor 5 (mGlu5) within the nucleus accumbens shell (AcbSh) of adult male mice, but was unchanged in anxiety-resilient adolescents. Herein, we determined the role of mGlu5 signaling in withdrawal-induced anxiety via pharmacological manipulation using the mGlu5 negative allosteric modulator MTEP and the positive allosteric modulator CDPPB...
January 5, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29315668/spin-density-accuracy-and-distribution-in-azido-cu-ii-complexes-a-source-function-analysis
#6
Giovanni Macetti, Leonardo Lo Presti, Carlo Gatti
Magnetic properties of open-shell systems depend on their unpaired electron density distribution. Accurate spin density (SD) is difficult to retrieve, both from polarized neutron diffraction (PND) data and from quantum approaches, and its interpretation is not trivial. The Source Function is a useful tool to interpret SD distributions and their accuracy. It is here applied to analyze and compare the theoretical SD in a weakly ferromagnetically coupled end-end azido dicopper complex with that in a strongly-coupled end-on complex...
January 5, 2018: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/29315373/female-offspring-from-chronic-hyperandrogenemic-dams-exhibit-delayed-puberty-and-impaired-ovarian-reserve
#7
Zhiqiang Wang, Mingjie Shen, Ping Xue, Sara A DiVall, James Segars, Sheng Wu
Female offspring of many species exposed to high doses of androgens in utero experience endocrine dysfunction during adulthood. The phenotype of offspring from females with pre-pregnancy hyperandrogenemia and impaired ovulation, however, has not been examined. We developed a mouse model of hyperandrogenemia by implanting a low dose dihydrotestosterone (DHT) pellet 15 days before conception. The serum DHT levels in dams treated with the pellet were 1.7 to 2 fold higher (p<0.005) than levels in dams without DHT...
January 5, 2018: Endocrinology
https://www.readbyqxmd.com/read/29301063/aberrant-epigenetic-gene-regulation-in-gabaergic-interneuron-subpopulations-in-the-hippocampal-dentate-gyrus-of-mouse-offspring-following-developmental-exposure-to-hexachlorophene
#8
Yousuke Watanabe, Hajime Abe, Kota Nakajima, Maky Ideta-Otsuka, Katsuhide Igarashi, Gye-Hyeong Woo, Toshinori Yoshida, Makoto Shibutani
Maternal hexachlorophene (HCP) exposure causes transient disruption of hippocampal neurogenesis in mouse offspring. We examined epigenetically hypermethylated and downregulated genes related to this HCP-induced disrupted neurogenesis. Mated female mice were dietary exposed to 0 or 100 ppm HCP from gestational day 6 to postnatal day (PND) 21 on weaning. The hippocampal dentate gyrus of male offspring was subjected to methyl-capture sequencing and real-time reverse transcription-PCR analyses on PND 21. Validation analyses on methylation identified three genes, Dlx4, Dmrt1, and Plcb4, showing promoter-region hypermethylation...
January 2, 2018: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29294877/traumatic-experience-polytraumatization-and-perinatal-depression-in-a-diverse-sample-of-adolescent-mothers
#9
Candace Killian-Farrell, Cynthia F Rizo, Brianna M Lombardi, Samantha Meltzer-Brody, Sarah E Bledsoe
This study examines the prevalence of trauma subtypes, polytraumatization, and perinatal depression (PND) in a diverse sample of adolescent mothers to help inform PND prevention, screening, and treatment efforts. We conducted a secondary analysis of a sample ( N = 210) of adolescent mothers aged 14 to 20 years from a prospective longitudinal study of PND. Participants were recruited from a county-based, public health prenatal clinic, and data were collected in the prenatal and postpartum periods. In this sample, 81% of adolescent mothers reported at least one trauma experience and 75% reported lifetime experience of intimate partner violence (IPV)...
August 1, 2017: Journal of Interpersonal Violence
https://www.readbyqxmd.com/read/29294515/-the-effects-of-prenatal-exposure-to-brominated-diphenyl-ethers-209-to-the-influence-of-male-offspring-rats-hippocampus-bdnf-potein-expression-and-its-mechanism-of-action
#10
R Shi, X Xie, Y Gao, Y J Zhou, Y Zhang, L M Chen, Y Tian
Objective: The effects of prenatal exposure to brominated diphenyl ethers-209 to the Influence of male offspring rats hippocampus BDNF potein expression and its mechanism of action. Methods: Pregnant Sprague-Dawley (SD) rats were randomly treated with BDE-209 (100, 300, and 900 mg/kg body weight) or corn oil by gavage on gestational days 6-20. Blood was obtained through heart puncture for thyroid hormone analysis in male rats offspring on PND 60. The hippocampus tissues were excised. The expression levels of BDNF protein were measured by Western blot...
September 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29280981/%C3%AE-n-methylamino-l-alanine-bmaa-toxicity-is-gender-and-exposure-age-dependent-in-rats
#11
Laura Louise Scott, Timothy Grant Downing
Cyanobacterial β-N-methylamino-L-alanine (BMAA) has been suggested as a causative or contributory factor in the development of several neurodegenerative diseases. However, no BMAA animal model has adequately shown clinical or behavioral symptoms that correspond to those seen in either Alzheimer's Disease (AD), Amyotrophic Lateral Sclerosis (ALS) or Parkinson's Disease (PD). We present here the first data that show that when neonatal rats were exposed to BMAA on postnatal days 3, 4 and 5, but not on gestational day 14 or postnatally on days 7 or 10, several AD and/or PD-related behavioral, locomotor and cognitive deficits developed...
December 27, 2017: Toxins
https://www.readbyqxmd.com/read/29260494/developmental-exposure-to-low-levels-of-ethinylestradiol-affects-play-behavior-in-juvenile-female-rats
#12
Marco Zaccaroni, Alessandro Massolo, Daniele Della Seta, Francesca Farabollini, Giulietta Giannelli, Leonida Fusani, Francesco Dessì-Fulgheri
Juvenile social play contributes to the development of adult social and emotional skills in humans and non-human animals, and is therefore a useful endpoint to study the effects of endocrine disrupters on behavior in animal models. Ethinylestradiol (EE2) is a widely produced, powerful synthetic estrogen that is widespread in the environment mainly because is a component of the contraceptive pill. In addition, fetuses may be exposed to EE2 when pregnancy is undetected during contraceptive treatment. To understand whether exposure to EE2 during gestation or lactation affects social play, we exposed 72 female Sprague-Dawley rats to EE2 or vehicle either during gestation (gestation day (GD) 5 through GD 20) or during lactation (from postnatal day (PND) 1 through PND 21)...
December 19, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/29259485/prenatal-undernutrition-disrupted-the-sexual-maturation-but-not-the-sexual-behavior-in-male-rats
#13
Toshiya Matsuzaki, Munkhsaikhan Munkhzaya, Altankhuu Tungalagsuvd, Yiliyasi Mayila, Takeshi Iwasa, Kiyohito Yano, Rie Yanagihara, Takako Tokui, Takeshi Kato, Akira Kuwahara, Sumika Matsui, Minoru Irahara
Purpose: Exposure to various stressors, including psychological, metabolic, and immune, in the perinatal period induces long-lasting effects in physiological function and increase the risk of metabolic disorders in later life. In the present study, sexual maturation and sexual behavior were assessed in prenatally undernourished mature male rats. Methods: All the pregnant rats were divided into the maternal normal nutrition (mNN) group and the maternal undernutrition (mUN) group...
October 2017: Reproductive Medicine and Biology
https://www.readbyqxmd.com/read/29251222/dietary-polydextrose-and-galactooligosaccharide-increase-exploratory-behavior-improve-recognition-memory-and-alter-neurochemistry-in-the-young-pig
#14
Stephen A Fleming, Supida Monaikul, Alexander J Patsavas, Rosaline V Waworuntu, Brian M Berg, Ryan N Dilger
OBJECTIVES: Previous studies have shown that dietary prebiotics have the potential to improve memory, alter social behavior, and reduce anxiety-like behaviors in rodents. The present research sought to expand upon such results and describe the effects of feeding prebiotics early in life on cognition and neurochemistry using a translational piglet model. METHODS: Pigs were provided customized milk replacer containing 2 g/L each of polydextrose (PDX) and galactooligosaccharide (PDX/GOS) or 0 g/L (Control) from postnatal day (PND) 2-33...
December 18, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/29248488/safety-assessment-of-propylparaben-in-juvenile-rats
#15
Lakshmi Sivaraman, Louise Pouliot, Bonnie Wang, Thomas Brodie, Michael Graziano, Mary Ellen McNerney
There are conflicting literature reports that parabens, useful antimicrobial additives in pharmaceuticals, may have estrogenic activity. We conducted a comprehensive study to determine whether propylparaben (PP) administration to juvenile rats is associated with adverse effects on reproductive development and function. PP was administered orally once daily to groups of Crl:CD(SD) rats at doses of 0 (vehicle), 10, 100, or 1000 mg/kg on Postnatal Days (PNDs) 4-90. In-life observations, clinical pathology, reproductive organ weights and histopathology, landmarks of sexual maturation, estrous cyclicity and functional reproductive competence were assessed...
December 14, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/29247674/developmental-exposure-to-low-level-ambient-ultrafine-particle-air-pollution-and-cognitive-dysfunction
#16
D A Cory-Slechta, J L Allen, K Conrad, E Marvin, M Sobolewski
Developmental exposures to ambient ultrafine particles (UFPs) can produce multiple neuropathological and neurochemical changes that might contribute to persistent alterations in cognitive-type functions. The objective of the current study was to test the hypothesis that developmental UFP exposure produced impairments in learning, memory and impulsive-like behaivors and to determine whether these were selective and thus independent of deficits in other behavioral domains such as motor activity or motivation...
December 13, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/29239920/a-rare-complication-after-septoplasty-visual-loss-due-to-right-retinal-artery-spasm
#17
Celal Günay, Gökhan Altin, Burak Kersin, Mahmut Odabaşi
Septoplasty is a commonly used procedure for correcting septal cartilage deformities. Hemorrhage, abscesses, scaling, adhesions, and scar tissue are often seen after the operation of the septoplasty, but temporary or permanent visual loss due to local anesthetic use has been reported very rarely in the literature. The authors also aimed to present a female patient with retinal artery spasm in the right eye after septoplasty in this article. A 27-year-old female patient was admitted to the authors' clinic with long-standing nasal obstruction and postnasal drip...
December 12, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29234279/long-term-effects-of-intermittent-adolescent-alcohol-exposure-in-male-and-female-rats
#18
Eva M Marco, Sara Peñasco, María-Donina Hernández, Anabel Gil, Erika Borcel, Marta Moya, Elena Giné, José Antonio López-Moreno, Consuelo Guerri, Meritxell López-Gallardo, Fernando Rodríguez de Fonseca
Alcohol is a serious public health concern that has a differential impact on individuals depending upon age and sex. Patterns of alcohol consumption have recently changed: heavy episodic drinking-known as binge-drinking-has become most popular among the youth. Herein, we aimed to investigate the consequences of intermittent adolescent alcohol consumption in male and female animals. Thus, Wistar rats were given free access to ethanol (20% in drinking water) or tap water for 2-h sessions during 3 days, and for an additional 4-h session on the 4th day; every week during adolescence, from postnatal day (pnd) 28-52...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29229410/pre-weaning-maternal-separation-increases-eating-later-in-life-in-male-and-female-offspring-but-increases-brainstem-dopamine-receptor-1a-and-2a-only-in-males
#19
Julliet Araújo de Souza, Matilde Cesiana da Silva, Rhowena Jane Barbosa de Matos, Larissa Cavalcanti do Amaral Almeida, Luana Cruz Beltrão, Felipe Leitão de Souza, Raul Manhães de Castro, Sandra Lopes de Souza
Maternal separation stress (MS) is a model of early life stress performed by the separation between dam and pups in the first days of life. This model has been associated with eating behavior and dopaminergic system abnormal phenotypes. This study aims to investigate whether maternal separation in the light or dark phase of the circadian cycle promotes phenotypic adjustments in the eating behavior and the dopamine system in both males and females. Lactating Wistar rats were separated from their litters from postnatal day 1 (PND 1) to PND 14 for 6 h in the light or dark phase of the circadian cycle...
December 8, 2017: Appetite
https://www.readbyqxmd.com/read/29229141/neurodevelopment-impact-of-co2-pneumoperitoneum-in-neonates-experimental-study-in-a-rat-model
#20
Alice Miranda, Susana Roque, José M Pêgo, Jorge Correia-Pinto
BACKGROUND: Laparoscopy is becoming more common in neonates. However, concerns remain about the impact of the carbon-dioxide (CO2)-insufflation over the neonatal brain. We aim to evaluate the peripheral (serum) and central (cerebrospinal fluid [CSF]) cytokine response after neonatal CO2-pneumoperitoneum and its impact over neurodevelopmental milestones acquisition and long-term behavioral outcomes. MATERIALS AND METHODS: Rats were subjected to a systematic assessment of neurodevelopmental milestones between postnatal day 1 (PND 1) and PND 21...
January 2018: Journal of Surgical Research
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