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https://www.readbyqxmd.com/read/28332181/involvement-of-testicular-daam1-expression-in-zinc-protection-against-cadmium-induced-male-rat-reproductive-toxicity
#1
Marouane Chemek, Massimo Venditti, Sana Boughamoura, Safa Ben Mimouna, Imed Messaoudi, Sergio Minucci
In order to verify the effects of exposure to Cd and Zn on testicular DAAM1 gene and protein expression and also to ascertain their involvement in the protective role of Zn in prevent the testicular toxicity Cd-induced in male offspring rats at adult age after gestational and lactational exposure, male offspring rats, from mothers receiving either tap water, Cd, Zn or Cd + Zn during gestation and lactation periods, were scarified on postnatal days (PND) 70. The reproductive organ (testis, epididymis and vesicle seminal) were collected, weighed and analysed...
March 23, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28324861/behavioral-improvements-in-a-valproic-acid-rat-model-of-autism-following-vitamin-d-supplementation
#2
Lin Du, Guolian Zhao, Zipeng Duan, Fan Li
The aim was to identify the effects of early vitamin D supplementation on autism-like behaviors (ASD) induced by valproic acid (VPA, an anti-convulsant and a mood stabilizer) in rats. 10 male Wistar rat pups with prenatal exposure to saline were in control group, and 20 Pups with prenatal exposure to VPA were divided into ASD-N (0.9% saline treated) and ASD-D group (vitamin D 80,000 IU/kg treated) on postnatal day 12. Self-grooming, olfactory habituation/dishabituation, and social interaction tests were conducted to assess social interaction, communication, and repetitive behaviors...
March 6, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28319126/effects-of-sevoflurane-and-clonidine-on-acid-base-status-and-long-term-emotional-and-cognitive-outcomes-in-spontaneously-breathing-rat-pups
#3
Nicole Almenrader, Paola Colucci, Valentina De Castro, Daniela Valeri, Maura Palmery, Viviana Trezza, Patrizia Campolongo
BACKGROUND: Numerous experiments in rodents suggest a causative link between exposure to general anaesthetics during brain growth spurt and poor long-lasting neurological outcomes. Many of these studies have been questioned with regard of their translational value, mainly because of extremely long anaesthesia exposure. Therefore, the aim of the present study was to assess the impact of a short sevoflurane anaesthesia, alone or combined with clonidine treatment, on respiratory function in spontaneously breathing rat pups and overall effects on long-lasting emotional and cognitive functions...
2017: PloS One
https://www.readbyqxmd.com/read/28316272/prenatal-noise-and-restraint-stress-interact-to-alter-exploratory-behavior-and-balance-in-juvenile-rats-and-mixed-stress-reverses-these-effects
#4
Soumeya Badache, Slim Bouslama, Oualid Brahmia, Abdel Madjid Baïri, Abdel Krim Tahraoui, Ali Ladjamaa
We aimed to investigate in adolescent rats the individual and combined effects of prenatal noise and restraint stress on balance control, exploration, locomotion and anxiety behavior. Three groups of pregnant rats were exposed to daily repeated stress from day 11 to day 19 of pregnancy: 3 min noise (Noise Stress, NS); 10 min restraint (Restraint Stress, RS); or 3 min noise followed by 10 min restraint (Mixed Stress, MS). On postnatal days (PND) 44, 45 and 46, four groups of male rats (Control, NS, RS:, MS; 16 rats each), were tested as follows: 1) Beam walking (BW), 2) Open Field (OF), and 3) Elevated plus maze (EPM)...
March 19, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28314928/hilar-granule-cells-of-the-mouse-dentate-gyrus-effects-of-age-septotemporal-location-strain-and-selective-deletion-of-the-proapoptotic-gene-bax
#5
Keria Bermudez-Hernandez, Yi-Ling Lu, Jillian Moretto, Swati Jain, John J LaFrancois, Aine M Duffy, Helen E Scharfman
The dentate gyrus (DG) principal cells are glutamatergic granule cells (GCs), and they are located in a compact cell layer. However, GCs are also present in the adjacent hilar region, but have been described in only a few studies. Therefore, we used the transcription factor prospero homeobox 1 (Prox1) to quantify GCs at postnatal day (PND) 16, 30, and 60 in a common mouse strain, C57BL/6J mice. At PND16, there was a large population of Prox1-immunoreactive (ir) hilar cells, with more in the septal than temporal hippocampus...
March 17, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28304003/a-huge-thornwaldt-s-cyst-causing-hearing-loss-in-an-adult-patient
#6
Nazim Bozan, Yunus Feyyat Sakin, Pinar Kundi, Muzaffer Ari, Ferhat Bozkus
Nasopharynx (NP) is anatomically difficult to explore adequately. The pharyngeal bursa (PB) is a recess lined with respiratory epithelium along the posterior wall of the nasopharynx between the longus capitis muscles. If the opening through which the bursa drains into the nasopharynx becomes obstructed, a Thornwaldt's cyst (TC) might develop. Small-sized cysts are mostly asymptomatic, whereas large-sized cysts may lead to various nasal and otologic symptoms depending on their localization. In this report, we present a 71-year-old case with a huge TC who presented to our clinic with the complaints of snoring, nasal obstruction, periodic halitosis, postnasal drip, headache, and hearing loss in the left ear and underwent total excision of the cyst through transnasal endoscopy...
March 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28291999/-seasonal-and-perennial-allergic-rhinoconjunctivitis
#7
K Schröder, D Finis, S Meller, B A Buhren, M Wagenmann, G Geerling
Seasonsal allergic conjunctivitis (SAC) and perennial allergic conjunctivitis (PAC) as well as intermittent and persistent allergic rhinitis are widespread diseases. Because a combined occurrence of ocular and nasal symptoms is very common the summarising term allergic rhinoconjunctivitis is frequently used. SAC and PAC representing the two acute forms of allergic conjunctivitis account for more than 90% of all cases of allergic conjunctivitis. Compared to the chronic forms of allergic conjunctivitis their course of disease is milder...
February 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28287791/adolescent-chronic-restraint-stress-acrs-elicits-robust-depressive-like-behavior-in-freely-cycling-adult-female-rats-without-increasing-anxiety-like-behaviors
#8
Meghan Hibicke, Martha A Graham, Renée L Hayslett
Stress during times of rapid development is a risk factor for Major Depressive Disorder, a mood disorder that disproportionately affects women. We developed an adolescent chronic restraint stress (aCRS) protocol using female rats to address the impact of adolescent stress on female adult depressive-like behavior. Animals were divided into 4 treatment groups: not restrained:saline (NRSAL), not restrained:desipramine (NRDES), restrained:saline (RSAL), and restrained:desipramine (RDES). NRSAL and NRDES rats were housed in a separate colony room from RSAL and RDES rats...
March 13, 2017: Experimental and Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28285734/behavioral-predictors-of-alcohol-drinking-in-a-neurodevelopmental-rat-model-of-schizophrenia-and-co-occurring-alcohol-use-disorder
#9
Jibran Y Khokhar, Travis P Todd
Alcohol use disorder commonly occurs in patients with schizophrenia and contributes greatly to its morbidity. Unfortunately, the neural and behavioral underpinnings of alcohol drinking in these patients are not well understood. In order to begin to understand the cognitive and reward-related changes that may contribute to alcohol drinking, this study was designed to address: 1) latent inhibition; 2) conditioning; and 3) extinction of autoshaping in a neurodevelopmental rat model with relevance to co-occurring schizophrenia and alcohol use disorders, the neonatal ventral hippocampal lesioned (NVHL) rat...
March 9, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28279842/tooth-manganese-as-a-biomarker-of-exposure-and-body-burden-in-rats
#10
Christine Austin, Cardius Richardson, Donald Smith, Manish Arora
BACKGROUND: Neonates and children are particularly vulnerable to the toxic effects of excess manganese (Mn), but studies of Mn exposure during these developmental periods are hampered by a lack of validated biomarkers. Deciduous teeth may be used to assess Mn exposure during these developmental periods but require further validation to determine the relationship between tooth Mn, Mn in target tissues, and exposure. OBJECTIVES: To determine the relationship of tooth Mn concentrations with: (i) exposure dose, (ii) the timing/duration of exposure, and (iii) with Mn concentrations in blood, brain and bone...
March 6, 2017: Environmental Research
https://www.readbyqxmd.com/read/28278626/neutralising-ability-of-terminalia-fagifolia-extract-combretaceae-against-the-in-vitro-neuromuscular-effects-of-bothrops-jararacussu-venom
#11
Natália Tribuiani, Marylu Oliveira Tavares, Monique Neves Santana, Isadora Caruso Fontana Oliveira, Jorge do Amaral Filho, Magali Glauzer Silva, Marcio Galdino Dos Santos, José Carlos Cogo, Rafael Stuani Floriano, Karina Cogo-Müller, Yoko Oshima-Franco
The ability of Terminalia fagifolia hydroalcoholic extract (Tf-HE) to neutralise the paralysis and myotoxicity induced by Bothrops jararacussu venom was assayed using mouse phrenic nerve-diaphragm (PND) preparation and two varieties of chick biventer cervicis (BC) preparations. Tf-HE 100 μg/mL and 500 μg/mL were tested against 40 and 200 μg of venom/mL in PND and BC preparations, respectively, using pre- and post-venom incubation treatments. The effects of Tf-HE against the myotoxicity caused by venom were evaluated via histological analysis (PND) and creatine kinase (CK) release (BC)...
March 2, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28262968/early-life-pb-exposure-and-its-effect-on-later-life-retinal-degeneration
#12
Shweta Modgil, Swaranjit Singh Cameotra, Vijay Lakshmi Sharma, Akshay Anand
The study presents the longitudinal effect of early life lead exposure on retinal ischemia. Swiss albino mice were exposed to lead acetate at two different timepoints viz. postnatal day 1-20 and at 7(th) week of age. These mice were then followed till 10 week of age and subjected to retinal ischemia. Retinal ischemia was induced using pterygopalatine artery ligation. The effect of prior lead exposure on ischemic insult was determined using various histological and molecular parameters. Although toxic effects of Pb are well reported, but the results in this study showed not much significant effect of early life Pb exposure on later life retinal degeneration...
March 6, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28259722/oxytocin-mitigated-the-depressive-like-behaviors-of-maternal-separation-stress-through-modulating-mitochondrial-function-and-neuroinflammation
#13
Hossein Amini-Khoei, Ali Mohammadi-Asl, Shayan Amiri, Mir-Jamal Hosseini, Majid Momeny, Mahsa Hassanipour, Mojgan Rastegar, Arya Haj-Mirzaian, Arvin Haj Mirzaian, Hossein Sanjarimoghaddam, Shahram Ejtemaei Mehr, Ahmad Reza Dehpour
Mother-infant contact has a critical role on brain development and behavior. Experiencing early-life adversities (such as maternal separation stress or MS in rodents) results in adaptations of neurotransmission systems, which may subsequently increase the risk of depression symptoms later in life. In this study, we show that Oxytocin (OT) exerted antioxidant and anti-inflammatory properties. Previous studies indicate that neuroinflammation and mitochondrial dysfunction are associated with the pathophysiology of depression...
March 1, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28253637/the-influence-of-lexical-characteristics-and-talker-accent-on-the-recognition-of-english-words-by-speakers-of-japanese
#14
Kiyoko Yoneyama, Benjamin Munson
Whether or not the influence of listeners' language proficiency on L2 speech recognition was affected by the structure of the lexicon was examined. This specific experiment examined the effect of word frequency (WF) and phonological neighborhood density (PND) on word recognition in native speakers of English and second-language (L2) speakers of English whose first language was Japanese. The stimuli included English words produced by a native speaker of English and English words produced by a native speaker of Japanese (i...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28245157/developing-stage-dependent-retinal-toxicity-induced-by-l-glutamate-in-neonatal-rats
#15
Hikaru Mitori, Takeshi Izawa, Mitsuru Kuwamura, Masahiro Matsumoto, Jyoji Yamate
The neurotransmitter glutamate causes excitotoxicity in the human retina. In neonatal rats, the degree of glutamate-induced retinal damage depends on age at administration. To elucidate the sensitivity to glutamate on various developing stage of retina, we investigated glutamate-induced retinal damage and glutamate target cells on each postnatal day (PND). Newborn rats received a single subcutaneous administration of l-glutamate on PNDs 1 to 14. Retinal cell apoptosis characterized as pyknotic and terminal deoxynucleotidyl transferase-mediated dUTP digoxigenin nick end labeling-positive nuclei was analyzed at 6 hr after treatment, and sequential morphological features of retina were evaluated on PND 21...
December 2016: Toxicologic Pathology
https://www.readbyqxmd.com/read/28241979/effects-of-%C3%AF-3-fatty-acids-on-stereotypical-behavior-and-social-interactions-in-wistar-rats-prenatally-exposed-to-lipopolysaccarides
#16
Jucélia Jeremias Fortunato, Naiana da Rosa, Ana Olívia Martins Laurentino, Marina Goulart, Camila Michalak, Lidiane Pinto Borges, Evandro da Cruz Cittadin Soares, Patricia Alves Reis, Hugo Caire de Castro Faria Neto, Fabrícia Petronilho
OBJECTIVE: Supplementation with ω-3 polyunsaturated fatty acids (PUFAs) can positively contribute to neurologic development, modulating inflammatory responses, promoting homeostasis, and having a positive effect on animal behaviors associated with mental disorders. The aim of this study was to evaluate behavioral and biochemical effects of ω-3 fatty acid supplementation in an animal model for mental disorders by prenatal maternal exposure to lipopolysaccardies (LPS) from the maternal immune activation...
March 2017: Nutrition
https://www.readbyqxmd.com/read/28238254/maternal-separation-induced-visceral-hypersensitivity-from-childhood-to-adulthood
#17
Lisha Yi, Haiqin Zhang, Huihui Sun, Lu Zhou, Ying Chen, Liqian Xuan, Yuanxi Jiang, Shuchang Xu
Background/Aims: Early adverse life events (EALs) are relevant to irritable bowel syndrome in adulthood. Maternal separation (MS), as one of the EALs, has proved to induce visceral hypersensitivity in adult rats. However, the effect of MS on visceral hypersensitvity from the post-weaning period to adulthood remains unknown. Methods: One hundred and ten neonatal SD rats were randomly divided into 2 groups: rats in the MS group were exposed to 3 hours daily MS on postnatal day (PND) 2-14; the normal control (NC) group remained undisturbed...
February 25, 2017: Journal of Neurogastroenterology and Motility
https://www.readbyqxmd.com/read/28229972/early-life-stress-experience-may-blunt-hypothalamic-leptin-signalling
#18
J H Lee, S B Yoo, J Y Kim, J Y Lee, B T Kim, K Park, J W Jahng
The aim of this study was to investigate whether neonatal maternal separation (MS) - chronic stress experience in early life - affects the anorectic efficacy of leptin in the offspring at adolescence. Sprague-Dawley pups were separated from the dam daily for 3 h during postnatal day 1-14 or left undisturbed as non-handled controls (NH). NH and MS male pups received an intraperitoneal leptin (100 μg/kg) or saline on postnatal day (PND) 28, and then food intake and body weight gain were recorded. The hypothalamic levels of leptin-signalling-related genes, phosphorylated signal transducer and activator of transcription-3 (pSTAT3) and protein-tyrosine phosphatase 1B (PTP1B) were examined at 40 min after a single injection of leptin on PND 39 by immunohistochemistry and Western blot analysis...
March 2017: Journal of Biosciences
https://www.readbyqxmd.com/read/28226317/neuroprotective-effects-of-acetyl-l-carnitine-on-neonatal-hypoxia-ischemia-induced-brain-injury-in-rats
#19
Shiyu Tang, Su Xu, Xin Lu, Rao P Gullapalli, Mary C McKenna, Jaylyn Waddell
Perinatal hypoxia ischemia (HI) is a significant cause of brain injury in surviving infants. Although hypothermia improves outcomes in some infants, additional therapies are needed since about 40% of infants still have a poor outcome. Acetyl-L-carnitine (ALCAR), an acetylated derivative of L-carnitine, protected against early changes in brain metabolites and mitochondrial function after HI on postnatal day (PND) 7 in a rat pup model of near-term HI injury. However, its efficacy in long-term structural and functional outcomes remains unexplored...
2016: Developmental Neuroscience
https://www.readbyqxmd.com/read/28220506/network-structure-of-perinatal-depressive-symptoms-in-latinas-relationship-to-stress-and-reproductive-biomarkers
#20
Hudson Santos, Eiko I Fried, Josephine Asafu-Adjei, R Jeanne Ruiz
Based on emerging evidence, mood disorders can be plausibly conceptualized as networks of causally interacting symptoms, rather than as latent variables of which symptoms are passive indicators. In an innovative approach in nursing research, we used network analysis to estimate the network structure of 20 perinatal depressive (PND) symptoms. Then, two proof-of-principle analyses are presented: Incorporating stress and reproductive biomarkers into the network, and comparing the network structure of PND symptoms between non-depressed and depressed women...
February 21, 2017: Research in Nursing & Health
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