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The effects of in utero exposure to a migrant, 4,4'-butylidenebis(6-t-butyl-m-cresol), from nitrile-butadiene rubber gloves on monoamine neurotransmitter in rats. 2008

Kanako Satoh, and Ryouichi Nonaka, and Norio Ohashi, and Midori Shimizu, and Shigeru Oshio, and Ken Takeda
Department of Environmental Health and Toxicology, Tokyo Metropolitan Institute of Public Health, Japan. Kanako_Satou@member.metro.tokyo.jp

4,4'-Butylidenebis(6-t-butyl-m-cresol) (BBBC) can be eluted from disposable gloves made of nitrile-butadiene rubber and possibly also detected in food. We have reported that BBBC is an androgen and estrogen antagonist. In this report, BBBC (0.1, 1.0 mg/kg body weight (bw)/day) was subcutaneously administered to pregnant rats from gestation days 11 through 18 and the effects on male offspring (postnatal day (PND) 102) were examined. Body weight at lactation and brain weight at PND 102 were decreased in the 1.0 mg/kg bw BBBC-treated group. Altered levels and turnover of the monoamines dopamine (DA), serotonin (5-HT), and noradrenalin (NA) as well as their metabolites were detected. In the prefrontal cortex DA, 3,4-dihydroxyphenylacetic acid (DOPAC), 5-HT, 5-hydroxyindole-3-acetic acid (5-HIAA) levels were significantly increased, but homovanillic acid (HVA)/DA was decreased. In the striatum NA level, DOPAC/DA and HVA/DA were significantly increased, but 3-methoxy-4-hydrophenylglycol hemipiperazinium (MHPG) level and MHPG/NA were decreased. In hippocampus MHPG level was significantly decreased. In hypothalamus 5-HIAA level and 5-HIAA/5-HT were significantly increased. These results suggested that prenatal exposure to BBBC affects the central nervous system of male rat offspring, and BBBC may be an endocrine disrupting-chemical during the fetal periods.

UI MeSH Term Description Entries
D008297 Male Males
D008734 Methoxyhydroxyphenylglycol Synthesized from endogenous epinephrine and norepinephrine in vivo. It is found in brain, blood, CSF, and urine, where its concentrations are used to measure catecholamine turnover. Hydroxymethoxyphenylglycol,MHPG,MOPEG,Vanylglycol,4-Hydroxy-3-methoxyphenylethylene Glycol,4-Hydroxy-3-methoxyphenylethyleneglycol,4-Hydroxy-3-methoxyphenylglycol,Methoxyhydroxyphenylglycol, (+)-Isomer,Methoxyhydroxyphenylglycol, (+-)-Isomer,Methoxyhydroxyphenylglycol, (-)-Isomer,4 Hydroxy 3 methoxyphenylethylene Glycol,4 Hydroxy 3 methoxyphenylethyleneglycol,4 Hydroxy 3 methoxyphenylglycol
D009570 Nitriles Organic compounds containing the -CN radical. The concept is distinguished from CYANIDES, which denotes inorganic salts of HYDROGEN CYANIDE. Nitrile
D009638 Norepinephrine Precursor of epinephrine that is secreted by the ADRENAL MEDULLA and is a widespread central and autonomic neurotransmitter. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers, and of the diffuse projection system in the brain that arises from the LOCUS CERULEUS. It is also found in plants and is used pharmacologically as a sympathomimetic. Levarterenol,Levonorepinephrine,Noradrenaline,Arterenol,Levonor,Levophed,Levophed Bitartrate,Noradrenaline Bitartrate,Noradrénaline tartrate renaudin,Norepinephrin d-Tartrate (1:1),Norepinephrine Bitartrate,Norepinephrine Hydrochloride,Norepinephrine Hydrochloride, (+)-Isomer,Norepinephrine Hydrochloride, (+,-)-Isomer,Norepinephrine d-Tartrate (1:1),Norepinephrine l-Tartrate (1:1),Norepinephrine l-Tartrate (1:1), (+,-)-Isomer,Norepinephrine l-Tartrate (1:1), Monohydrate,Norepinephrine l-Tartrate (1:1), Monohydrate, (+)-Isomer,Norepinephrine l-Tartrate (1:2),Norepinephrine l-Tartrate, (+)-Isomer,Norepinephrine, (+)-Isomer,Norepinephrine, (+,-)-Isomer
D009929 Organ Size The measurement of an organ in volume, mass, or heaviness. Organ Volume,Organ Weight,Size, Organ,Weight, Organ
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D001835 Body Weight The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms. Body Weights,Weight, Body,Weights, Body
D001923 Brain Chemistry Changes in the amounts of various chemicals (neurotransmitters, receptors, enzymes, and other metabolites) specific to the area of the central nervous system contained within the head. These are monitored over time, during sensory stimulation, or under different disease states. Chemistry, Brain,Brain Chemistries,Chemistries, Brain
D002070 Butadienes Four carbon unsaturated hydrocarbons containing two double bonds. Butadiene Derivative,Butadiene Derivatives,Derivative, Butadiene,Derivatives, Butadiene
D002851 Chromatography, High Pressure Liquid Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed. Chromatography, High Performance Liquid,Chromatography, High Speed Liquid,Chromatography, Liquid, High Pressure,HPLC,High Performance Liquid Chromatography,High-Performance Liquid Chromatography,UPLC,Ultra Performance Liquid Chromatography,Chromatography, High-Performance Liquid,High-Performance Liquid Chromatographies,Liquid Chromatography, High-Performance

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