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Chen L, Wu H, Hong W, Aguilar ZP, Fu F, Xu H. The effect of reproductive toxicity induced by ZnO NPs in mice during early pregnancy through mitochondrial apoptotic pathway. ENVIRONMENTAL TOXICOLOGY 2021; 36:1143-1151. [PMID: 33599401 DOI: 10.1002/tox.23113] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 02/04/2021] [Indexed: 06/12/2023]
Abstract
The potential toxicity of Zinc oxide nanoparticles (ZnO NPs) to human beings has become a widespread concern. This study explored the reproductive toxicity and the mechanism of toxicity of ZnO NPs in early pregnant mice. The results showed that abnormal weight changes, induced inflammation, reduced level of serum sex hormones, damaged uterus, increased abortion, and abnormal development of fetus. In the uterus, the transcription levels of ZnT-1, HO-1, Bax, Bax/Bcl-2, JNK, and Caspase-3 were significantly up-regulated while Bcl-2, ER-1 and PR were significantly down-regulated. The TUNEL-positive cells increased that were exposed to high levels of ZnO NPs. In summary, those results indicated that Zn from high levels of exposure to ZnO NPs accumulated in the uterus that could have caused the formation of ROS that led to oxidative stress, which might have activated the mitochondrial apoptotic pathway that could have caused the uterine injury which induced the observed reproductive toxicity.
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Affiliation(s)
- Ling Chen
- The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, China
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Haifang Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
- The Third Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, China
| | - Wuding Hong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | | | - Fen Fu
- The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, China
| | - Hengyi Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
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Chen L, Zheng F, Yang P, Chen B, Aguilar ZP, Fu F, Xu H. Effects of QDs exposure on the reproductive and embryonic developmental toxicity in mice at various pregnancy stages. Toxicol Res (Camb) 2020; 9:371-378. [PMID: 32905215 DOI: 10.1093/toxres/tfaa034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 05/08/2019] [Accepted: 05/15/2020] [Indexed: 01/18/2023] Open
Abstract
Quantum dots (QDs) have recently attracted considerable attention in the biomedical fields because of their unique and excellent optical properties. However, information on their health effects, particularly in the reproductive system, is limited. The present study focuses on the effects of intravenous injection of CdSe/ZnS QDs on the reproductive system and embryo development at various stages of pregnancy in mice. The CdSe/ZnS QDs intravenously injected in mice during pregnancy accumulated in the maternal liver, uterus and placenta. This accumulation affected the growth and development of the embryo during the early and middle stages of pregnancy. Moreover, genotoxicity to the placenta after exposure to CdSe/ZnS QDs was demonstrated by the increased expression levels of genes related to oxidative stress and apoptosis and the reduced expression levels of genes related to the nutrient and waste transportation. Alterations in the gene expression levels have hindered the transport of metabolites across the placenta, which in turn affected the ability of the fetus to obtain nutrients.
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Affiliation(s)
- Ling Chen
- The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang 330000, China.,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Fengxia Zheng
- The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang 330000, China.,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Pengfei Yang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Bolu Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | | | - Fen Fu
- The Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang 330000, China
| | - Hengyi Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
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Li R, Zhang T, Qin M, Yue P, Cai M, He X, Qiao H. An embryo-fetal development toxicity study with dimethylaminoethyl ginkgolide B in rats and rabbits. Toxicol Res (Camb) 2018; 7:1225-1235. [PMID: 30542606 PMCID: PMC6240900 DOI: 10.1039/c8tx00135a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 08/27/2018] [Indexed: 11/21/2022] Open
Abstract
Ginkgo biloba (a herbal product) has long been used in traditional Chinese medicine to treat cerebrovascular and cardiovascular diseases. Ginkgolide B is one of the important pharmacologically active components of Ginkgo biloba. Dimethylaminoethyl ginkgolide B (a novel ginkgolide B derivative) has been developed to overcome the poor water-solubility of natural drugs and to achieve higher bioavailability. This study investigated the potential effects of dimethylaminoethyl ginkgolide B on pregnant dams and embryo-fetal development in Sprague-Dawley rats and New Zealand white rabbits following maternal exposure on gestational day (GD) 6-15 and GD 6-18, respectively. Dimethylaminoethyl ginkgolide B was administered by intravenous injection to pregnant rats (0, 10, 30 and 100 mg kg-1 d-1) and rabbits (0, 6, 18 and 60 mg kg-1 d-1). Maternal toxicity signs, such as lower maternal body weight gain and food consumption, were observed at 100 mg kg-1 d-1 in rats and 60 mg kg-1 d-1 in rabbits. The developmental toxic effects included a decrease in fetal and placental weights, increased incidences of skeletal variations and delay in fetal ossification. Fetal growth and development were affected by dimethylaminoethyl ginkgolide B in the high-dose group in rabbits. The no-observed-adverse-effect level of dimethylaminoethyl ginkgolide B is considered to be 30 mg kg-1 d-1 for rats and 18 mg kg-1 d-1 for rabbits.
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Affiliation(s)
- Ronghua Li
- School of Pharmaceutical Sciences , Nanjing Tech University , Nanjing , 211816 , China . ;
| | - Tingting Zhang
- School of Pharmaceutical Sciences , Nanjing Tech University , Nanjing , 211816 , China . ;
| | - Mei Qin
- School of Pharmaceutical Sciences , Nanjing Tech University , Nanjing , 211816 , China . ;
| | - Peng Yue
- JiangSu Center for Safety Evaluation of Drugs , Nanjing , 211816 , China
| | - Ming Cai
- JiangSu Center for Safety Evaluation of Drugs , Nanjing , 211816 , China
| | - Xuejun He
- School of Pharmaceutical Sciences , Nanjing Tech University , Nanjing , 211816 , China . ;
| | - Hongqun Qiao
- School of Pharmaceutical Sciences , Nanjing Tech University , Nanjing , 211816 , China . ;
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Dauti A, Gerstl B, Chong S, Chisholm O, Anazodo A. Improvements in Clinical Trials Information Will Improve the Reproductive Health and Fertility of Cancer Patients. J Adolesc Young Adult Oncol 2017; 6:235-269. [PMID: 28207285 DOI: 10.1089/jayao.2016.0084] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
There are a number of barriers that result in cancer patients not being referred for oncofertility care, which include knowledge about reproductive risks of antineoplastic agents. Without this information, clinicians do not always make recommendations for oncofertility care. The objective of this study was to describe the level of reproductive information and recommendations that clinicians have available in clinical trial protocols regarding oncofertility management and follow-up, and the information that patients may receive in clinical trials patient information sheets or consent forms. A literature review of the 71 antineoplastic drugs included in the 68 clinical trial protocols showed that 68% of the antineoplastic drugs had gonadotoxic animal data, 32% had gonadotoxic human data, 83% had teratogenic animal data, and 32% had teratogenic human data. When the clinical trial protocols were reviewed, only 22% of the protocols reported the teratogenic risks and 32% of the protocols reported the gonadotoxic risk. Only 56% of phase 3 protocols had gonadotoxic information and 13% of phase 3 protocols had teratogenic information. Nine percent of the protocols provided fertility preservation recommendations and 4% provided reproductive information in the follow-up and survivorship period. Twenty-six percent had a section in the clinical trials protocol, which identified oncofertility information easily. When gonadotoxic and teratogenic effects of treatment were known, they were not consistently included in the clinical trial protocols and the lack of data for new drugs was not reported. Very few protocols gave recommendations for oncofertility management and follow-up following the completion of cancer treatment. The research team proposes a number of recommendations that should be required for clinicians and pharmaceutical companies developing new trials.
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Affiliation(s)
- Angela Dauti
- 1 College of Arts and Sciences, Department of Chemistry, New York University , New York City, New York.,2 Population Sciences Department, Dana-Farber Cancer Institute , Boston, Massachusetts.,3 Department of Women's and Children's Medicine, School of Medical Sciences, University of New South Wales , Sydney, Australia
| | - Brigitte Gerstl
- 4 Kids Cancer Centre, Sydney Children's Hospital , Sydney, Australia
| | - Serena Chong
- 3 Department of Women's and Children's Medicine, School of Medical Sciences, University of New South Wales , Sydney, Australia
| | - Orin Chisholm
- 5 Department of Pharmaceutical Medicine, School of Medical Sciences, University of New South Wales , Sydney, Australia
| | - Antoinette Anazodo
- 3 Department of Women's and Children's Medicine, School of Medical Sciences, University of New South Wales , Sydney, Australia .,4 Kids Cancer Centre, Sydney Children's Hospital , Sydney, Australia .,6 Nelune Comprehensive Cancer Centre, Prince of Wales Hospital , Randwick, Australia
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An L, Zhang T. Comparison Impairments of Spatial Cognition and Hippocampal Synaptic Plasticity Between Prenatal and Postnatal Melamine Exposure in Male Adult Rats. Neurotox Res 2015; 29:218-29. [DOI: 10.1007/s12640-015-9578-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 11/14/2015] [Accepted: 11/17/2015] [Indexed: 12/12/2022]
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The teratogenic effects of imatinib mesylate on rat fetuses. Toxicol Rep 2015; 2:654-663. [PMID: 28962401 PMCID: PMC5598385 DOI: 10.1016/j.toxrep.2015.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 05/04/2015] [Accepted: 05/04/2015] [Indexed: 01/09/2023] Open
Abstract
Imatinib mesylate, a selective tyrosine kinase inhibitor, is the first line treatment against chronic myelogenous leukemia and gastrointestinal stromal tumors. The aim of the present study is to investigate the effects of imatinib mesylate on the pregnant rats and their fetuses. Pregnant rats were divided into three groups; the first group served as a control group. The second and third groups were orally administered imatinib at doses of 36 mg/kg body weight or 54 mg/kg b.wt. on gestation days (SDs) 6 through 13 or SDs 13 through 19, respectively. All animals were sacrificed on the 20th day of gestation. Treatment with imatinib caused a reduction of maternal body weight gain, uterine and placental weights, increased rate of abortion and fetal resorptions. High dose of imatinib caused fetal congenital deformities represented in harelip, contraction of the fore limbs, and paralysis of the hind limbs, exencephaly, encephalocoele and distended abdominal wall, besides occurrence of wavy ribs and absence of other ribs in addition to skeletal growth retardation and lack of ossification of the most skeletal elements. The present work concluded that imatinib is teratogenic when given orally to pregnant rats at 54 mg/kg b.wt. and causes direct maternal or developmental toxicity.
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Hong JS, Park MK, Kim MS, Lim JH, Park GJ, Maeng EH, Shin JH, Kim MK, Jeong J, Park JA, Kim JC, Shin HC. Prenatal development toxicity study of zinc oxide nanoparticles in rats. Int J Nanomedicine 2014; 9 Suppl 2:159-71. [PMID: 25565834 PMCID: PMC4279776 DOI: 10.2147/ijn.s57932] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
This study investigated the potential adverse effects of zinc oxide nanoparticles ([ZnO(SM20(+)) NPs] zinc oxide nanoparticles, positively charged, 20 nm) on pregnant dams and embryo-fetal development after maternal exposure over the period of gestational days 5-19 with Sprague-Dawley rats. ZnO(SM20(+)) NPs were administered to pregnant rats by gavage at 0, 100, 200, and 400 mg/kg/day. All dams were subjected to a cesarean section on gestational day 20, and all of the fetuses were examined for external, visceral, and skeletal alterations. Toxicity in the dams manifested as significantly decreased body weight after administration of 400 mg/kg/day NPs; reduced food consumption after administration of 200 and 400 mg/kg/day NPs; and decreased liver weight and increased adrenal glands weight after administration of 400 mg/kg/day NPs. However, no treatment-related difference in: number of corpora lutea; number of implantation sites; implantation rate (%); resorption; dead fetuses; litter size; fetal deaths and placental weights; and sex ratio were observed between the groups. On the other hand, significant decreases between treatment groups and controls were seen for fetal weights after administration of 400 mg/kg/day NPs. Morphological examinations of the fetuses demonstrated significant differences in incidences of abnormalities in the group administered 400mg/kg/day. Meanwhile, no significant difference was found in the Zn content of fetal tissue between the control and high-dose groups. These results showed that oral doses for the study with 15-days repeated of ZnO(SM20(+)) NPs were maternotoxic in the 200 mg/kg/day group, and embryotoxic in the 400 mg/kg/day group.
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Affiliation(s)
- Jeong-Sup Hong
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, South Korea ; College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - Myeong-Kyu Park
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, South Korea
| | - Min-Seok Kim
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, South Korea
| | - Jeong-Hyeon Lim
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, South Korea
| | - Gil-Jong Park
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, South Korea
| | - Eun-Ho Maeng
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, South Korea
| | - Jae-Ho Shin
- Department of Biomedical Laboratory Science, Eulji University, Seongnam-si, South Korea
| | - Meyoung-Kon Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, South Korea
| | - Jayoung Jeong
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, Chungcheongbuk-do, South Korea
| | - Jin-A Park
- College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - Jong-Choon Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju, South Korea
| | - Ho-Chul Shin
- College of Veterinary Medicine, Konkuk University, Seoul, South Korea
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Hong JS, Park MK, Kim MS, Lim JH, Park GJ, Maeng EH, Shin JH, Kim YR, Kim MK, Lee JK, Park JA, Kim JC, Shin HC. Effect of zinc oxide nanoparticles on dams and embryo-fetal development in rats. Int J Nanomedicine 2014; 9 Suppl 2:145-57. [PMID: 25565833 PMCID: PMC4279755 DOI: 10.2147/ijn.s57931] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
This study investigated the potential adverse effects of zinc oxide nanoparticles (ZnOSM20[−] NPs; negatively charged, 20 nm) on pregnant dams and embryo–fetal development after maternal exposure over the period of gestational days 5–19 with Sprague Dawley rats. ZnOSM20(−) NPs were administered to pregnant rats by gavage at 0 mg/kg/day, 100 mg/kg/day, 200 mg/kg/day, and 400 mg/kg/day. All dams were subjected to caesarean section on gestational day 20, and all the fetuses were examined for external, visceral, and skeletal alterations. Toxicity in the dams manifested as significantly decreased body weight at 400 mg/kg/day and decreased liver weight, and increased adrenal glands weight at 200 mg/kg/day and 400 mg/kg/day. However, no treatment-related difference in the number of corpora lutea, the number of implantation sites, the implantation rate (%), resorption, dead fetuses, litter size, fetal deaths, fetal and placental weights, and sex ratio were observed between the groups. Morphological examinations of the fetuses demonstrated no significant difference in the incidences of abnormalities between the groups. No significant difference was found in the Zn content of fetal tissue between the control and high-dose groups. These results showed that a 15-day repeated oral dose of ZnOSM20(−) was minimally maternotoxic at dose of 200 mg/kg/day and 400 mg/kg/day.
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Affiliation(s)
- Jeong-Sup Hong
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, Korea ; College of Veterinary Medicine, Konkuk University, Seoul, Korea
| | - Myeong-Kyu Park
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, Korea
| | - Min-Seok Kim
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, Korea
| | - Jeong-Hyeon Lim
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, Korea
| | - Gil-Jong Park
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, Korea
| | - Eun-Ho Maeng
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, Korea
| | - Jae-Ho Shin
- Department of Biomedical Laboratory Science, Eulji University, Seongnam-si, Korea
| | - Yu-Ri Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Korea
| | - Meyoung-Kon Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Korea
| | - Jong-Kwon Lee
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, Chungcheongbuk-do, Gwangju, Korea
| | - Jin-A Park
- College of Veterinary Medicine, Konkuk University, Seoul, Korea
| | - Jong-Choon Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju, Korea
| | - Ho-Chul Shin
- College of Veterinary Medicine, Konkuk University, Seoul, Korea
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Kim SH, Lee IC, Baek HS, No KW, Shin DH, Moon C, Kim SH, Park SC, Kim JC. Effects of Melamine and Cyanuric Acid on Embryo-Fetal Development in Rats. ACTA ACUST UNITED AC 2013; 98:391-9. [DOI: 10.1002/bdrb.21082] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2013] [Revised: 10/23/2013] [Accepted: 10/23/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Sung-Hwan Kim
- College of Veterinary Medicine; Chonnam National University; Gwangju Republic of Korea
| | - In-Chul Lee
- College of Veterinary Medicine; Chonnam National University; Gwangju Republic of Korea
| | - Hyung-Seon Baek
- College of Veterinary Medicine; Chonnam National University; Gwangju Republic of Korea
| | - Kyeong-Woo No
- College of Veterinary Medicine; Chonnam National University; Gwangju Republic of Korea
| | - Dong-Ho Shin
- College of Veterinary Medicine; Chonnam National University; Gwangju Republic of Korea
| | - Changjong Moon
- College of Veterinary Medicine; Chonnam National University; Gwangju Republic of Korea
| | - Sung-Ho Kim
- College of Veterinary Medicine; Chonnam National University; Gwangju Republic of Korea
| | - Seung-Chun Park
- College of Veterinary Medicine; Kyungpook National University; Daegu Republic of Korea
| | - Jong-Choon Kim
- College of Veterinary Medicine; Chonnam National University; Gwangju Republic of Korea
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Culbreth ME, Harrill JA, Freudenrich TM, Mundy WR, Shafer TJ. Comparison of chemical-induced changes in proliferation and apoptosis in human and mouse neuroprogenitor cells. Neurotoxicology 2012; 33:1499-1510. [PMID: 22634143 DOI: 10.1016/j.neuro.2012.05.012] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Revised: 05/04/2012] [Accepted: 05/16/2012] [Indexed: 12/18/2022]
Abstract
There is a need to develop rapid and efficient models to screen chemicals for their potential to cause developmental neurotoxicity. Use of in vitro neuronal models, including human cells, is one approach that allows for timely, cost-effective toxicity screening. The present study compares the sensitivity of human (ReN CX) and mouse (mCNS) neuroprogenitor cell lines to chemicals using a multiplex assay for proliferation and apoptosis, endpoints that are critical for neural development. Cells were exposed to 0.001-100 μM concentrations of 11 chemicals (cadmium, chlorpyrifos oxon, dexamethasone, dieldrin, ketamine, lead, maneb, methylmercury, nicotine, trans-retinoic acid, and trimethyltin) reported in the literature to affect proliferation and/or apoptosis, and 5 chemicals (dimethyl pthalate, glyphosate, omeprazole, saccharin, and d-sorbitol) with no reports of effects on either endpoint. High-content screening of markers for proliferation (BrdU incorporation) and apoptosis (activated caspase 3 and p53) was used to assess the effect of chemicals in both cell lines. Of the chemicals tested, methylmercury, cadmium, dieldrin, chlorpyrifos oxon, trans-retinoic acid, and trimethyltin decreased proliferation by at least 50% of control in either the ReN CX or mCNS cells. None of the chemicals tested activated caspase 3 or p53 in the ReN CX cells, while methylmercury, cadmium, dieldrin, chlorpyrifos oxon, trimethyltin, and glyphosate all induced at least a doubling in these apoptotic markers in the mCNS cells. Compared to control, cadmium, trans-retinoic acid, and trimethyltin decreased cell viability (ATP levels) by at least 50% in the ReN CX cells, while cadmium, dieldrin, and methylmercury decreased viability by at least 50% in the mCNS cells. Based on these results, BrdU is an appropriate marker for assessing chemical effects on proliferation, and human cells are more sensitive than mouse cells for this endpoint. By contrast, caspase 3 and p53 were altered by environmental chemicals in mouse, but not in human cells. Therefore, these markers are not appropriate to assess the ability of environmental chemicals to induce apoptosis in the ReN CX cells.
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Affiliation(s)
- Megan E Culbreth
- Student Contractor to Integrated Systems Toxicology Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | - Joshua A Harrill
- Integrated Systems Toxicology Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, MD105-03, Research Triangle Park, NC 27711, USA
| | - Theresa M Freudenrich
- Integrated Systems Toxicology Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, MD105-03, Research Triangle Park, NC 27711, USA
| | - William R Mundy
- Integrated Systems Toxicology Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, MD105-03, Research Triangle Park, NC 27711, USA
| | - Timothy J Shafer
- Integrated Systems Toxicology Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, MD105-03, Research Triangle Park, NC 27711, USA.
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Kim SH, Lee IC, Lim JH, Shin IS, Moon C, Kim SH, Park SC, Kim HC, Kim JC. Effects of melamine on pregnant dams and embryo-fetal development in rats. J Appl Toxicol 2011; 31:506-14. [PMID: 21706515 DOI: 10.1002/jat.1703] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2011] [Revised: 05/10/2011] [Accepted: 05/11/2011] [Indexed: 11/09/2022]
Abstract
There are worldwide concerns regarding the potential adverse effect of melamine. This study investigated the potential effects of melamine on pregnant dams and embryo-fetal development in Sprague-Dawley rats following maternal exposure on gestational days (GD) 6-20. Melamine was administered to pregnant rats by gavage at doses of 0, 200, 400 and 800 mg kg⁻¹ per day (n = 8-10 for each group). All dams were subjected to a Caesarean section on GD 21 and their fetuses were examined for morphological abnormalities. With administration of melamine at 800 mg kg⁻¹ per day, maternal toxicity manifested as increased incidences of clinical signs and death, lower body weight gain and food intake, and increases in heart, adrenal gland and kidney weights. Histopathological examinations revealed an increase in incidences of congestion, tubular necrosis/degeneration, crystals, casts, inflammatory cells in tubules, tubular dilation and tubular hyaline droplets in the maternal kidneys, while fetal kidneys (one fetus/litter) did not show any histopathological changes. Developmental toxic effects included a decrease in fetal weight, an increase in the incidence of skeletal variations and a delay in fetal ossification. No treatment-related maternal or developmental effects were observed at doses ≤ 400 mg kg⁻¹ per day. These results show that 15-day repeated oral dosing of melamine is embryo-/fetotoxic at a maternotoxic dose, but not teratogenic in rats. The no-observed-adverse-effect level of melamine for pregnant dams and embryo-fetal development is considered to be 400 mg kg⁻¹ per day.
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Affiliation(s)
- Sung-Hwan Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju, 500-757, Korea
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Lim JH, Kim SH, Lee IC, Moon C, Kim SH, Shin DH, Kim HC, Kim JC. Evaluation of Maternal Toxicity in Rats Exposed to Multi-Wall Carbon Nanotubes during Pregnancy. ENVIRONMENTAL HEALTH AND TOXICOLOGY 2011; 26:e2011006. [PMID: 22125767 PMCID: PMC3214989 DOI: 10.5620/eht.2011.26.e2011006] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Accepted: 03/10/2011] [Indexed: 05/31/2023]
Abstract
OBJECTIVES The present study investigated the potential adverse effects of multi-wall carbon nanotubes (MWCNTs) on pregnant dams and embryonic development following maternal exposure in rats. METHODS MWCNTs were orally administered to pregnant rats from gestational day (GD) 6 through 19 at dose levels of 0, 8, 40, 200, and 1000 mg/kg/day. During the test period, clinical signs, mortality, body weights, food consumption, serum biochemistry, oxidant-antioxidant status, gross findings, organ weights, and Caesarean section findings were examined. RESULTS All animals survived to the end of the study. A decrease in thymus weight was observed in the highest dose group. However, maternal body weight, food consumption, serum biochemical parameters, and oxidant-antioxidant balance in the kidneys were not affected by treatment with MWCNTs. No treatment-related differences in gestational index, embryo-fetal mortality, or fetal and placental weights were observed between treated and control groups. CONCLUSIONS The results show that 14-day repeated oral dosing of MWCNTs during pregnancy induces minimal maternal toxicity at 1000 mg/kg/day in rats. Under these experimental conditions, the no-observed-adverse-effect level of MWCNTs is considered to be 200 mg/kg/day for dams and 1000 mg/kg/day for embryonic development.
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Affiliation(s)
- Jeong-Hyeon Lim
- College of Veterinary Medicine, Chonnam National University, Gwangju, Korea
| | - Sung-Hwan Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju, Korea
| | - In-Chul Lee
- College of Veterinary Medicine, Chonnam National University, Gwangju, Korea
| | - Changjong Moon
- College of Veterinary Medicine, Chonnam National University, Gwangju, Korea
| | - Sung-Ho Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju, Korea
| | - Dong-Ho Shin
- College of Veterinary Medicine, Chonnam National University, Gwangju, Korea
| | - Hyoung-Chin Kim
- Biomedical Mouse Resource Center, Korea Research Institute of Bioscience and Biotechnology, Chungbuk, Korea
| | - Jong-Choon Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju, Korea
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Lim JH, Kim SH, Shin IS, Park NH, Moon C, Kang SS, Kim SH, Park SC, Kim JC. Maternal exposure to multi-wall carbon nanotubes does not induce embryo-fetal developmental toxicity in rats. ACTA ACUST UNITED AC 2011; 92:69-76. [PMID: 21254368 DOI: 10.1002/bdrb.20283] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Accepted: 12/20/2010] [Indexed: 12/20/2022]
Abstract
BACKGROUND Although the potential risk of carbon nanotubes (CNTs) to humans has recently increased due to expanding production and widespread use, the potential adverse effects of CNTs on embryo-fetal development have not yet been determined. METHODS This study investigated the potential effects of multi-wall CNTs (MWCNTs) on pregnant dams and embryo-fetal development in rats. MWCNTs were administered to pregnant rats by gavage at 0, 40, 200, and 1,000 mg/kg/day. All dams were subjected to Cesarean section on day 20 of gestation, and the fetuses were examined for any morphological abnormalities. RESULTS All animals survived to the end of the study. A decrease in thymus weight was observed in the high dose group in a dose-dependent manner. However, maternal body weight, food consumption, and oxidant-antioxidant balance in the liver were not affected by treatment with MWCNTs. No treatment-related differences in gestation index, fetal deaths, fetal and placental weights, or sex ratio were observed between the groups. Morphological examinations of the fetuses demonstrated no significant difference in incidences of abnormalities between the groups. CONCLUSIONS The results show that repeated oral doses of MWCNTs during pregnancy induces minimal maternal toxicity and no embryo-fetal toxicity at 1,000 mg/kg/day in rats. The no-observed-adverse-effect level of MWCNTs is considered to be 200 mg/kg/day for dams and 1,000 mg/kg/day for embryo-fetal development. In this study, the dosing formulation was not analyzed to determine the degree of reaggregation (or not), nor were blood levels of CNT's measured in the dosed animals to verify or characterize absorption.
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Affiliation(s)
- Jeong-Hyeon Lim
- College of Veterinary Medicine, Chonnam National University, Gwangju, Republic of Korea
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Glycolytic flux occurs in Drosophila melanogaster recovering from camptothecin treatment. Anticancer Drugs 2010; 21:945-57. [PMID: 20717003 DOI: 10.1097/cad.0b013e32833e2f60] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Camptothecin (CPT) and CPT-derived drugs are widely used against gynaecological and colorectal cancers. On account of their mechanism of action these drugs target rapidly dividing cells and may have an adverse effect on normal tissues. We sought to investigate their impact on normal cells by using Drosophila as a model. We investigated the possible involvement of Drosophila homologue of p53 (Dmp53) and a member of the retinoblastoma binding protein 6 family, known as Snama. On account of its molecular features and experimental evidence gleaned from mammalian studies we propose Snama as a candidate in Dmp53 regulation. We have used proteomics and core molecular biology techniques on embryos and on adult flies. We found that flies that recover from CPT treatment display a metabolic programme characterized by glycolytic flux, depletion of Dmp53 and increase of Snama transcripts. When we introduced methyl pyruvate in the diet to bypass the glycolytic pathway, we noticed differential expression of Dmp53 and Snama and improvement in reproduction and embryonic development. The development of embryos into the pupal stage was significantly improved to 40% (P=0.02) when CPT was given to mothers in combination with methyl pyruvate. This investigation highlights the importance of energy production mechanisms in cells that recover from chemotherapy and differences between the metabolic programmes used by recovering cells and those adopted by cancer cells.
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Venditto VJ, Simanek EE. Cancer therapies utilizing the camptothecins: a review of the in vivo literature. Mol Pharm 2010; 7:307-49. [PMID: 20108971 DOI: 10.1021/mp900243b] [Citation(s) in RCA: 283] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This review summarizes the in vivo assessment-preliminary, preclinical, and clinical-of chemotherapeutics derived from camptothecin or a derivative. Camptothecin is a naturally occurring, pentacyclic quinoline alkaloid that possesses high cytotoxic activity in a variety of cell lines. Major limitations of the drug, including poor solubility and hydrolysis under physiological conditions, prevent full clinical utilization. Camptothecin remains at equilibrium in an active lactone form and inactive hydrolyzed carboxylate form. The active lactone binds to DNA topoisomerase I cleavage complex, believed to be the single site of activity. Binding inhibits DNA religation, resulting in apoptosis. A series of small molecule camptothecin derivatives have been developed that increase solubility, lactone stability and bioavailability to varying levels of success. A number of macromolecular agents have also been described wherein camptothecin(s) are covalently appended or noncovalently associated with the goal of improving solubility and lactone stability, while taking advantage of the tumor physiology to deliver larger doses of drug to the tumor with lower systemic toxicity. With the increasing interest in drug delivery and polymer therapeutics, additional constructs are anticipated. The goal of this review is to summarize the relevant literature for others interested in the field of camptothecin-based therapeutics, specifically in the context of biodistribution, dosing regimens, and pharmacokinetics with the desire of providing a useful source of comparative data. To this end, only constructs where in vivo data is available are reported. The review includes published reports in English through mid-2009.
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Affiliation(s)
- Vincent J Venditto
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, USA
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Oliveira CDR, Moreira CQ, de Sá LRM, de Souza Spinosa H, Yonamine M. Maternal and developmental toxicity of ayahuasca in Wistar rats. ACTA ACUST UNITED AC 2010; 89:207-12. [DOI: 10.1002/bdrb.20244] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Yang YS, Ahn TH, Lee JC, Moon CJ, Kim SH, Park SC, Chung YH, Kim HY, Kim JC. Effects of tert-butyl acetate on maternal toxicity and embryo-fetal development in Sprague-Dawley rats. ACTA ACUST UNITED AC 2007; 80:374-82. [PMID: 17948321 DOI: 10.1002/bdrb.20124] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This study investigated the potential adverse effects of tert-butyl acetate (TBAc) on maternal toxicity and embryo-fetal development after maternal exposure of pregnant rats from gestational days 6 through 19. TBAc was administered to pregnant rats by gavage at 0, 400, 800, and 1,600 mg/kg/day. All dams were subjected to a Caesarean section on day 20 of gestation, and their fetuses were examined for any morphological abnormalities. At 1,600 mg/kg, maternal toxicity manifested as increases in the incidence of clinical signs and death, lower body weight gain and food intake, increases in the weights of adrenal glands and liver, and a decrease in thymus weight. Developmental toxicity included a decrease in fetal weight, an increase in the incidence of skeletal variation, and a delay in fetal ossification. At 800 mg/kg, only a minimal developmental toxicity, including an increase in the incidence of skeletal variation and a delay in fetal ossification, were observed. In contrast, no adverse maternal or developmental effects were observed at 400 mg/kg. These results show that a 14-day repeated oral dose of TBAc is embryotoxic at a maternally toxic dose (i.e., 1,600 mg/kg/day) and is minimally embryotoxic at a nonmaternally toxic dose (i.e., 800 mg/kg/day) in rats. However, no evidence for the teratogenicity of TBAc was noted in rats. It is concluded that the developmental findings observed in the present study are secondary effects to maternal toxicity. Under these experimental conditions, the no-observed-adverse-effect level of TBAc is considered to be 800 mg/kg/day for dams and 400 mg/kg/day for embryo-fetal development.
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Affiliation(s)
- Y S Yang
- College of Veterinary Medicine, Chonnam National University, Gwangju, Republic of Korea
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