PMID- 24530425 OWN - NLM STAT- MEDLINE DCOM- 20140508 LR - 20211021 IS - 1095-564X (Electronic) IS - 0012-1606 (Print) IS - 0012-1606 (Linking) VI - 388 IP - 1 DP - 2014 Apr 1 TI - Prenatal exposure to chromium induces early reproductive senescence by increasing germ cell apoptosis and advancing germ cell cyst breakdown in the F1 offspring. PG - 22-34 LID - S0012-1606(14)00071-2 [pii] LID - 10.1016/j.ydbio.2014.02.003 [doi] AB - Hexavalent chromium (CrVI), one of the more toxic heavy metals, is widely used in more than 50 industries such as chrome plating, welding, wood processing and tanneries. As one of the world's leading producers of chromium compounds, the U.S. is facing growing challenges in protecting human health against multiple adverse effects of CrVI. CrVI is rapidly converted to CrIII intracellularly, and can induce apoptosis through different mechanisms. Our previous studies demonstrated postnatal exposure to CrVI results in a delay or arrest in follicle development and puberty. Pregnant rats were treated with 25 ppm potassium dichromate (CrVI) from gestational day (GD) 9.5 to 14.5 through drinking water, placentae were removed on GD 20, and total Cr was estimated in the placentae; ovaries were removed from the F1 offspring on postnatal day (PND)-1 and various analyses were performed. Our results show that gestational exposure to CrVI resulted in (i) increased Cr concentration in the placenta, (ii) increased germ cell apoptosis by up-regulating p53/p27-Bax-caspase-3 proteins and by increasing p53-SOD-2 co-localization; (iii) accelerated germ cell cyst (GCC) breakdown; (iv) advanced primordial follicle assembly and primary follicle transition and (v) down regulation of p-AKT, p-ERK and XIAP. As a result of the above events, CrVI induced early reproductive senescence and decrease in litter size in F1 female progeny. CI - Published by Elsevier Inc. FAU - Sivakumar, Kirthiram K AU - Sivakumar KK AD - Department of Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, TAMU-4458, Texas A&M University, College Station, TX 77843, USA. FAU - Stanley, Jone A AU - Stanley JA AD - Department of Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, TAMU-4458, Texas A&M University, College Station, TX 77843, USA. FAU - Arosh, Joe A AU - Arosh JA AD - Department of Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, TAMU-4458, Texas A&M University, College Station, TX 77843, USA. FAU - Pepling, Melissa E AU - Pepling ME AD - Department of Biology, Syracuse University, 114 Life Sciences Complex, 107 College Place, Syracuse, NY 13244, USA. FAU - Burghardt, Robert C AU - Burghardt RC AD - Department of Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, TAMU-4458, Texas A&M University, College Station, TX 77843, USA. FAU - Banu, Sakhila K AU - Banu SK AD - Department of Integrative Biosciences, College of Veterinary Medicine and Biomedical Sciences, TAMU-4458, Texas A&M University, College Station, TX 77843, USA. Electronic address: skbanu@cvm.tamu.edu. LA - eng GR - R21 ES020561/ES/NIEHS NIH HHS/United States GR - ES020561-01/ES/NIEHS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20140212 PL - United States TA - Dev Biol JT - Developmental biology JID - 0372762 RN - 0 (Tumor Suppressor Protein p53) RN - 0R0008Q3JB (Chromium) RN - 18540-29-9 (chromium hexavalent ion) RN - T4423S18FM (Potassium Dichromate) SB - IM MH - Animals MH - *Apoptosis MH - Chromium/*toxicity MH - Cysts/metabolism MH - Female MH - Gene Expression Regulation MH - Germ Cells/*drug effects/*pathology MH - Immunohistochemistry MH - Maternal Exposure/*adverse effects MH - Microscopy, Fluorescence MH - Ovarian Follicle/drug effects MH - Ovary/drug effects MH - Placenta/drug effects MH - Potassium Dichromate/chemistry MH - Pregnancy MH - Pregnancy, Animal MH - Rats MH - Reproduction/*drug effects MH - Tumor Suppressor Protein p53/metabolism PMC - PMC3991725 MID - NIHMS567793 OTO - NOTNLM OT - Chromium OT - Follicle atresia OT - Germ cell cyst breakdown OT - Ovary OT - Primordial follicle EDAT- 2014/02/18 06:00 MHDA- 2014/05/09 06:00 PMCR- 2015/04/01 CRDT- 2014/02/18 06:00 PHST- 2013/11/22 00:00 [received] PHST- 2014/01/21 00:00 [revised] PHST- 2014/02/04 00:00 [accepted] PHST- 2014/02/18 06:00 [entrez] PHST- 2014/02/18 06:00 [pubmed] PHST- 2014/05/09 06:00 [medline] PHST- 2015/04/01 00:00 [pmc-release] AID - S0012-1606(14)00071-2 [pii] AID - 10.1016/j.ydbio.2014.02.003 [doi] PST - ppublish SO - Dev Biol. 2014 Apr 1;388(1):22-34. doi: 10.1016/j.ydbio.2014.02.003. Epub 2014 Feb 12.