13,951 results match your criteria rats prenatal


Effect of prenatal exposure to Benzo[a]pyrene on ovarian toxicity and reproductive dysfunction: Protective effect of atorvastatin in the embryonic period.

Environ Toxicol 2021 May 12. Epub 2021 May 12.

Department of Anatomy, Faculty of Medicine, Molecular and Cell Biology Research Center, Mazandaran University of Medical Sciences, Sari, Iran.

As an environmental contaminant, Benzo[a]pyrene (B[a]P; BaP) disrupts the antioxidant signaling and thus leads to the induction of oxidative stress and the damage of DNA in the ovary. low-dose atorvastatin (ATV) has antioxidant and anti-apoptotic properties. The present study aimed to survey the effects of prenatal exposure to BaP on ovarian toxicity and also to investigate the protective role of ATV in reducing ovarian toxicity. Read More

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The long-term prognosis of hippocampal neurogenesis and behavioral changes of offspring from rats exposed to valproic acid during pregnancy.

Neuropsychopharmacol Rep 2021 May 5. Epub 2021 May 5.

Department of Psychiatry, Juntendo Koshigaya Hospital, Saitama, Japan.

Aim: In pregnant women with epilepsy, it is essential to balance maternal safety and the potential teratogenicity of anticonvulsants. Recently, growing evidence has indicated that valproic acid (VPA) can produce postnatal congenital malformations and impair cognitive function. However, the mechanisms underlying cognitive dysfunction in long-term prognoses remain unclear. Read More

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Prenatal High-Sucrose Diet Induced Vascular Dysfunction in Thoracic Artery of Fetal Offspring.

Mol Nutr Food Res 2021 May 3:e2100072. Epub 2021 May 3.

Department of Obstetrics, Affiliated Hospital of Jining Medical University, Guhuai Road 89, Jining, 272001, China.

Scope: Maternal nutrition during pregnancy is related to intrauterine fetal development. The authors' previous work reports that prenatal high sucrose (HS) diet impaired micro-vascular functions in postnatal offspring. It is unclear whether/how prenatal HS causes vascular injury during fetal life. Read More

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The Behavior and Postnatal Development in Infant and Juvenile Rats After Ultrasound-Induced Chronic Prenatal Stress.

Front Physiol 2021 15;12:659366. Epub 2021 Apr 15.

Department of Basic and Applied Neurobiology, V.P. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow, Russia.

Fetal development is susceptible to environmental factors. One such factor is exposure to stress during pregnancy. The present study aimed to investigate the effects of chronic prenatal stress (PS) on the development and behavior of rat offspring during infancy and juvenile ages. Read More

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The Effect of Prenatal Food Restriction on Brain Proteome in Appropriately Grown and Growth Restricted Male Wistar Rats.

Front Neurosci 2021 14;15:665354. Epub 2021 Apr 14.

Second Department of Obstetrics and Gynaecology, Medical School, National and Kapodistrian University of Athens, Athens, Greece.

Background: Fetal growth restriction (FGR) has been associated with a higher risk of developing adverse perinatal outcomes and distinct neurodevelopmental and neurobehavioral disorders. The aim of the present study was to investigate the impact of prenatal food restriction on the brain proteome in both FGR and appropriately grown rats and to identify potential pathways connecting maternal malnutrition with altered brain development.

Methods: Ten time-dated pregnant Wistar rats were housed individually at their 12th day of gestation. Read More

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EDCs Reorganize Brain-Behavior Phenotypic Relationships in Rats.

J Endocr Soc 2021 May 18;5(5):bvab021. Epub 2021 Feb 18.

Institute for Neuroscience, The University of Texas at Austin, Austin, TX, 78712, USA.

All species, including humans, are exposed to endocrine-disrupting chemicals (EDCs). Previous experiments have shown behavioral deficits caused by EDCs that have implications for social competence and sexual selection. The neuromolecular mechanisms for these behavioral changes induced by EDCs have not been thoroughly explored. Read More

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High Intakes of [6S]-5-Methyltetrahydrofolic Acid Compared with Folic Acid during Pregnancy Programs Central and Peripheral Mechanisms Favouring Increased Food Intake and Body Weight of Mature Female Offspring.

Nutrients 2021 Apr 27;13(5). Epub 2021 Apr 27.

Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada.

Supplementation with [6S]-5-methyltetrahydrofolic acid (MTHF) is recommended as an alternative to folic acid (FA) in prenatal supplements. This study compared equimolar gestational FA and MTHF diets on energy regulation of female offspring. Wistar rats were fed an AIN-93G diet with recommended (2 mg/kg diet) or 5-fold (5X) intakes of MTHF or FA. Read More

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Transgenerational Effects of Di(2-Ethylhexyl) Phthalate on Anogenital Distance, Sperm Functions and DNA Methylation in Rat Offspring.

Int J Mol Sci 2021 Apr 16;22(8). Epub 2021 Apr 16.

Environmental and Occupational Medicine, National Taiwan University (NTU) College of Medicine and NTU Hospital, Taipei 100229, Taiwan.

Di(2-ethylhexyl) phthalate (DEHP) is widely used as a plasticizer in the manufacture of polyvinylchloride plastics and has been associated with concerns regarding male reproductive toxicity. In this study, we hypothesized that maternal exposure to DEHP induces transgenerational inheritance of adult-onset adverse reproductive outcomes through the male germline in the F1, F2, and F3 generations of male offspring. Pregnant rats were treated with 5 or 500 mg of DEHP/kg/day through gavage from gestation day 0 to birth. Read More

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Maternal Exposure to Dibutyl Phthalate (DBP) or Diethylstilbestrol (DES) Leads to Long-Term Changes in Hypothalamic Gene Expression and Sexual Behavior.

Int J Mol Sci 2021 Apr 17;22(8). Epub 2021 Apr 17.

School of Biological Sciences, University of Adelaide, Adelaide 5005, Australia.

Xenobiotic exposure during pregnancy and lactation has been linked to perinatal changes in male reproductive outcomes and other endocrine parameters. This pilot study wished to assess whether brief maternal exposure of rats to xenobiotics dibutyl phthalate (DBP) or diethylstilbestrol (DES) might also cause long-term changes in hypothalamic gene expression or in reproductive behavior of the resulting offspring. Time-mated female Sprague Dawley rats were given either DBP (500 mg/kg body weight, every second day from GD14. Read More

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Pravastatin ameliorated osteoarthritis susceptibility in male offspring rats induced by prenatal ethanol exposure.

Bone 2021 Apr 27;149:115976. Epub 2021 Apr 27.

Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China. Electronic address:

Osteoarthritis (OA) is a disease associated with a disorder of cholesterol metabolism. Our previous studies showed that prenatal ethanol exposure (PEE) caused cholesterol accumulation in articular cartilage and increased the susceptibility to OA in offspring. However, we did not determine whether pravastatin, a cholesterol-lowering agent, could rescue PEE-induced susceptibility to OA. Read More

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Effects of prenatal synthetic cannabinoid exposure on the cerebellum of adolescent rat offspring.

Heliyon 2021 Apr 13;7(4):e06730. Epub 2021 Apr 13.

Department of Drug Discovery and Development, Auburn University, Auburn, AL, USA.

is the most commonly used illicit drug worldwide. Recently, cannabis use among young pregnant women has greatly increased. However, prenatal cannabinoid exposure leads to long-lasting cognitive, motor, and behavioral deficits in the offspring and alterations in neural circuitry through various mechanisms. Read More

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Dose-dependent effects of prenatal exposure of pioglitazone, the PPARγ agonist, on the hippocampus development and learning and memory performance of rat offspring.

Authors:
Dilek Sağır

Toxicol Appl Pharmacol 2021 Jun 21;421:115544. Epub 2021 Apr 21.

Faculty of Health Sciences, Sinop University, 57000 Sinop, Turkey. Electronic address:

It is known that pioglitazone, defined as a PPARγ agonist, has neuron-protective properties in nervous system disorders. The aim of this study is to investigate the effects of pioglitazone administration at different doses during prenatal period on the neurons, glial cells and learning-memory levels in the hippocampus of rat offspring. Pregnant rats were divided into three groups; Low-Dose Pioglitazone (LDP), High-Dose Pioglitazone (HDP) and control (C) (n = 3). Read More

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Maternal antioxidant treatment protects adult offspring against memory loss and hippocampal atrophy in a rodent model of developmental hypoxia.

FASEB J 2021 May;35(5):e21477

Department of Physiology, Development & Neuroscience, University of Cambridge, Cambridge, UK.

Chronic fetal hypoxia is one of the most common outcomes in complicated pregnancy in humans. Despite this, its effects on the long-term health of the brain in offspring are largely unknown. Here, we investigated in rats whether hypoxic pregnancy affects brain structure and function in the adult offspring and explored underlying mechanisms with maternal antioxidant intervention. Read More

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Developmental, behavioral and endocrine alterations in male rats at early and late postnatal life following in utero exposure to low dose di--butylphthalate.

Toxicol Res 2021 Apr 6;37(2):173-181. Epub 2020 Jul 6.

Department of Endocrinology of Reproduction and Adaptation, VP Komisarenko Institute of Endocrinology and Metabolism, National Academy of Medical Sciences of Ukraine, 69 Vyshgorodska Str., Kyiv, 04114 Ukraine.

Environmental chemical pollutants that interfere with hormonal homeostasis or hormone signaling are the relevant agents inducing congenital or postnatally developed reproductive abnormalities in human beings, wild and domestic animals. In this study, we are examining reproductive effects of prenatal exposure of male rats to a low dose di--butylphthalate (DBP). Wistar female rats were given intragastrically DBP at a daily dose of 100 mg/kg b. Read More

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New insights on nitric oxide: Focus on animal models of schizophrenia.

Behav Brain Res 2021 Apr 15;409:113304. Epub 2021 Apr 15.

Lab. Neuropsiquiatría, Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla, 14 Sur 6301, San Manuel, 72570, Puebla, Mexico. Electronic address:

Schizophrenia is a devastating complex disorder characterised by a constellation of behavioral deficits with the underlying mechanisms not fully known. Nitric oxide (NO) has emerged as a key signaling molecule implicated in schizophrenia. Three nitric oxide sinthases (NOS), endothelial, neuronal, and inducible, release NO within the cell. Read More

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Expanded noninvasive prenatal testing for fetal aneuploidy and copy number variations and parental willingness for invasive diagnosis in a cohort of 18,516 cases.

BMC Med Genomics 2021 Apr 14;14(1):106. Epub 2021 Apr 14.

Prenatal Diagnosis Center, Women and Children's Hospital, School of Medicine, Xiamen University, 10 Zhenhai Road, Xiamen, 361003, Fujian Province, China.

Background: Noninvasive prenatal testing (NIPT) has been wildly used to screen for common aneuplodies. In recent years, the test has been expanded to detect rare autosomal aneuploidies (RATs) and copy number variations (CNVs). This study was performed to investigate the performance of expanded noninvasive prenatal testing (expanded NIPT) in screening for common trisomies, sex chromosomal aneuploidies (SCAs), rare autosomal aneuploidies (RATs), and copy number variations (CNVs) and parental willingness for invasive prenatal diagnosis in a Chinese prenatal diagnosis center. Read More

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Aspartame and cancer - new evidence for causation.

Environ Health 2021 Apr 12;20(1):42. Epub 2021 Apr 12.

Boston College, Chestnut Hill, MA, USA.

Background: Aspartame is one of the world's most widely used artificial sweeteners and is an ingredient in more than 5000 food products globally. A particularly important use is in low-calorie beverages consumed by children and pregnant women. The Ramazzini Institute (RI) reported in 2006 and 2007 that aspartame causes dose-related increases in malignant tumors in multiple organs in rats and mice. Read More

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The effects of maternal SSRI exposure on the serotonin system, prefrontal protein expression and behavioral development in male and female offspring rats.

Neurochem Int 2021 Jun 6;146:105041. Epub 2021 Apr 6.

School of Rehabilitation, Kunming Medical University, Kunming, China. Electronic address:

Fluoxetine (FLX), a commonly used selective serotonin reuptake inhibitor, is often used to treat depression during pregnancy. However, prenatal exposure to FLX has been associated with a series of neuropsychiatric illnesses. The use of a rodent model can provide a clear indication as to whether prenatal exposure to SSRIs, independent of maternal psychiatric disorders or genetic syndromes, can cause long-term behavioral abnormalities in offspring. Read More

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IgG modulation in male mice with reproductive failure after prenatal inflammation.

Reproduction 2021 May 10;161(6):669-679. Epub 2021 May 10.

Koltsov Institute of Developmental Biology, the Russian Academy of Sciences, Moscow, Russia.

Sexual performance in adult male rats is highly sensitive to prenatal stress which can affect the functionality of the reproductive system and various brain structures involved in modulating sexual behavior. The immunomodulatory effect of mouse IgG on reproductive maturity in male offspring after LPS exposure in vivo and in vitro was studied. Prenatal IgG injection (20 µg/mouse) had a positive impact on the puberty of male mice whose mothers were exposed to LPS (100 µg/kg) on the 12th day of pregnancy. Read More

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Dexamethasone induces an imbalanced fetal-placental-maternal bile acid circulation: involvement of placental transporters.

BMC Med 2021 Apr 7;19(1):87. Epub 2021 Apr 7.

Department of Obstetrics and Gynaecology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.

Background: The use of prenatal dexamethasone remains controversial. Our recent studies found that prenatal dexamethasone exposure can induce maternal intrahepatic cholestasis and have a lasting adverse influence on bile acid (BA) metabolism in the offspring. The purpose of this study was to investigate the effects of dexamethasone on fetal-placental-maternal BA circulation during the intrauterine period, as well as its placental mechanism. Read More

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Transgenerational effects of polychlorinated biphenyls: 2. Hypothalamic gene expression in rats.

Biol Reprod 2021 Apr 6. Epub 2021 Apr 6.

Division of Pharmacology & Toxicology, College of Pharmacy, University of Texas at Austin, Austin, TX, USA.

Polychlorinated biphenyls (PCBs) are endocrine-disrupting chemicals (EDCs) with well-established effects on reproduction and behavior in developmentally-exposed (F1) individuals. Because of evidence for transgenerational effects of EDCs on the neuroendocrine control of reproductive physiology, we tested the hypothesis that prenatal PCB exposure leads to unique hypothalamic gene expression profiles in three generations. Pregnant Sprague-Dawley rats were treated on gestational days 16 and 18 with the PCB mixture Aroclor 1221 (A1221), vehicle (3% DMSO in sesame oil), or estradiol benzoate (EB, 50 μg/kg), the latter a positive control for estrogenic effects of A1221. Read More

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MORPHOLOGICAL FEATURES OF RATS' HEARTS AFTER INTRAFETAL INJECTION OF DEXAMETHASONE.

Wiad Lek 2021 ;74(2):247-251

NATIONAL PIROGOV MEMORIAL MEDICAL UNIVERSITY, VINNYTSIA, UKRAINE.

Objective: The aim: Is to study the morphological features of rats' hearts after prenatal administration of glucocorticoids.

Patients And Methods: Materials and methods: In this study we used histological, immunohistochemical, electron-microscopic and statistical research methods.

Results: Results: It is found that at 30th day after birth in rats after intrafetal introduction of dexamethasone in myocardium a relative area occupied by arterial vessels is significantly smaller in comparison with control. Read More

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Spatial learning and memory deficits induced by prenatal glucocorticoid exposure depend on hippocampal CRHR1 and CXCL5 signaling in rats.

J Neuroinflammation 2021 Apr 2;18(1):85. Epub 2021 Apr 2.

Department of Gynecology and Obstetrics and Research Center for Molecular Metabolomics, Xiangya Hospital Central South University, Changsha, 410008, China.

Background: Prenatal synthetic glucocorticoid (sGC) exposure increases the susceptibility to cognitive and affective disorders in postnatal life. We previously demonstrated that prenatal sGC exposure results in an increase in corticotropin-releasing hormone (CRH) receptor type 1 (CRHR1) expression in the hippocampus of rats, and CRHR1 is involved in synapse formation via regulation of C-X-C chemokine ligand 5 (CXCL5) in hippocampus. We sought to investigate that the roles of CRHR1 and CXCL5 in learning and memory impairment caused by prenatal sGC exposure. Read More

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Epigenetic Consequences of in Utero Exposure to Rosuvastatin: Alteration of Histone Methylation Patterns in Newborn Rat Brains.

Int J Mol Sci 2021 Mar 26;22(7). Epub 2021 Mar 26.

Department of Cell Biology and Molecular Medicine, University of Szeged, 6720 Szeged, Hungary.

Rosuvastatin (RST) is primarily used to treat high cholesterol levels. As it has potentially harmful but not well-documented effects on embryos, RST is contraindicated during pregnancy. To demonstrate whether RST could induce molecular epigenetic events in the brains of newborn rats, pregnant mothers were treated daily with oral RST from the 11th day of pregnancy for 10 days (or until delivery). Read More

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Alterations in Tau Protein Level and Phosphorylation State in the Brain of the Autistic-Like Rats Induced by Prenatal Exposure to Valproic Acid.

Int J Mol Sci 2021 Mar 22;22(6). Epub 2021 Mar 22.

Department of Cellular Signalling, Mossakowski Medical Research Institute, Polish Academy of Sciences, Pawińskiego 5, 02-106 Warsaw, Poland.

Autism spectrum disorder (ASD) is a neurodevelopmental condition characterized by deficient social interaction and communication besides repetitive, stereotyped behaviours. A characteristic feature of ASD is altered dendritic spine density and morphology associated with synaptic plasticity disturbances. Since microtubules (MTs) regulate dendritic spine morphology and play an important role in spine development and plasticity the aim of the present study was to investigate the alterations in the content of neuronal α/β-tubulin and Tau protein level as well as phosphorylation state in the valproic acid (VPA)-induced rat model of autism. Read More

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Differential Disrupting Effects of Prolonged Low-Dose Exposure to Dichlorodiphenyltrichloroethane on Androgen and Estrogen Production in Males.

Int J Mol Sci 2021 Mar 19;22(6). Epub 2021 Mar 19.

Department of Histology, Cytology, and Embryology, Federal State Funded Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University, 119435 Moscow, Russia.

Dichlorodiphenyltrichloroethane (DDT) is the most widespread, persistent pollutant and endocrine disruptor on the planet. Although DDT has been found to block androgen receptors, the effects of its low-dose exposure in different periods of ontogeny on the male reproductive system remain unclear. We evaluate sex steroid hormone production in the pubertal period and after maturation in male Wistar rats exposed to low doses of o,p'-DDT, either during prenatal and postnatal development or postnatal development alone. Read More

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Behavioral Alterations and Decreased Number of Parvalbumin-Positive Interneurons in Wistar Rats after Maternal Immune Activation by Lipopolysaccharide: Sex Matters.

Int J Mol Sci 2021 Mar 23;22(6). Epub 2021 Mar 23.

Laboratory of the Neurophysiology of the Memory, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 14220 Prague 4, Czech Republic.

Maternal immune activation (MIA) during pregnancy represents an important environmental factor in the etiology of schizophrenia and autism spectrum disorders (ASD). Our goal was to investigate the impacts of MIA on the brain and behavior of adolescent and adult offspring, as a rat model of these neurodevelopmental disorders. We injected bacterial lipopolysaccharide (LPS, 1 mg/kg) to pregnant Wistar dams from gestational day 7, every other day, up to delivery. Read More

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Oxidative Stress Mediates the Fetal Programming of Hypertension by Glucocorticoids.

Antioxidants (Basel) 2021 Mar 29;10(4). Epub 2021 Mar 29.

Biomolecular Sciences, Laurentian University, Sudbury, ON P3E 2C6, Canada.

The field of cardiovascular fetal programming has emphasized the importance of the uterine environment on postnatal cardiovascular health. Studies have linked increased fetal glucocorticoid exposure, either from exogenous sources (such as dexamethasone (Dex) injections), or from maternal stress, to the development of adult cardiovascular pathologies. Although the mechanisms are not fully understood, alterations in gene expression driven by altered oxidative stress and epigenetic pathways are implicated in glucocorticoid-mediated cardiovascular programming. Read More

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Chances and Challenges of New Genetic Screening Technologies (NIPT) in Prenatal Medicine from a Clinical Perspective: A Narrative Review.

Genes (Basel) 2021 Mar 29;12(4). Epub 2021 Mar 29.

Department of Prenatal Medicine and Fetal Therapy, Justus Liebig University Giessen, 35392 Giessen, Germany.

In 1959, 63 years after the death of John Langdon Down, Jérôme Lejeune discovered trisomy 21 as the genetic reason for Down syndrome. Screening for Down syndrome has been applied since the 1960s by using maternal age as the risk parameter. Since then, several advances have been made. Read More

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The Effect of Maternal Immune Activation on Social Play-Induced Ultrasonic Vocalization in Rats.

Brain Sci 2021 Mar 9;11(3). Epub 2021 Mar 9.

Maj Institute of Pharmacology, Polish Academy of Sciences, Department of Behavioral Neuroscience and Drug Development, 12 Smętna Street, 31-343 Kraków, Poland.

Prenatal maternal infection is associated with an increased risk of various neurodevelopmental disorders, including autism spectrum disorders (ASD). Maternal immune activation (MIA) can be experimentally induced by prenatal administration of polyinosinic:polycytidylic acid (poly I:C), a synthetic viral-like double-stranded RNA. Although this MIA model is adopted in many studies, social and communicative deficits, included in the first diagnostic criterion of ASD, are poorly described in the offspring of poly(I:C)-exposed dams. Read More

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