Two-Week Repeated Dose Toxicity of Atractylodis Rhizoma Alba in F344 Rats

This research is to estimate the toxicity of Atractylodis Rhizoma Alba (ARA) in F344 rats and to find a dose level for the 13 weeks toxicity study. A hot water extract of ARA (ARWE) was administered orally to F344 rats at dose levels of 0 (vehicle control), 500, 1000, 2000, 3500, and 5000 mg/kg/day for 2 weeks. Each group was composed to five male and five female F344 rats. According to the result, there were no ARWE-related adverse changes in mortality, body weights, food consumption, urinalysis, hematology, clinical chemistry, gross finding at necropsy, and organ weight examination. Salivation was observed in 3500 and 5000 mg/kg/day in male and female rats but it could not have found any relationship with ARWE administration. Based on our findings, ARWE may not cause toxicity in rats under the experimental conditions. Therefore, dose level of 5000 mg/kg/day as a highest treatment group in 13-week exposure study is recommended for further toxicity assessment.

A 14-Day Repeated Dose Toxicity of Epimedii Herba Aqueous Extract Administered by Oral Gavage in F344 Rats

The objective of this study is to characterize a toxicity of Epimedii Herba (EH) in F344 rats and to find a dose levels for the 13 weeks toxicity study. EH is well known as medicinal herb in many Asian countries for traditional medicines of antibacterial and antiviral effects, estrogenic and antiestrogenic effects, and for treatment of osteoporosis, hypotensives, fatigue, kidney disorders, and related complications. However, the indispensable and basic information of toxicological evaluation of EH extract is insufficient to support its safe use. Therefore, we conducted toxicological evaluation of this drug in compliance with OECD and MFDS guideline in this study. The extract of EH was administered orally to F344 rats at dose levels of 0, 500, 1000, 2000, 3500, and 5000 mg/kg/day for 2 weeks. Each group was composed of 5 male and female rats. In this study, there were no treatment of EH-related adverse changes in clinical observations, mortality, body weights, food consumption, urinalysis, gross finding at necropsy, and organ weight examination. Total red blood cell count, hematocrit, mean corpuscular hemoglobin concentration, total cholesterol, and phospholipid were decreased in males and females at 5000 mg/kg/day compared to the control animals. Mean corpuscular volume and reticulocyte counts were increased in males and females at 5000 mg/kg/day compared to control animals. Therefore, we recommend that dose level of 5000 mg/kg/day is a highest treatment group in 13-week EH extract exposure study for further toxicity assessment.

The Association Between Unexplained Second-Trimester Maternal Serum Alpha-Fetoprotein or Human Chorionic Gonadotropin Elevations and Perinatal Complications / 대한산부인과학회잡지

Our purpose was to study the correlation between elevated maternal serum alpha-fetoprotein(MSAFP) or human chorionic gonadotropin(HCG) levels and pregnancy-induced hypertension (PIH), preeclampsia, preterm delivery. MSAFP and HCG levels were measured in stored second-trimester(14~22 weeks) serum obtained from 510 women. The criteria for patients with unexplained MSAFP elevations were a MSAFP level 2.5 or greater multiples of the median(MoM) and HCG elevations were a HCG level 2.0 or greater multiples of the median(MoM) excluding multiple pregnancy, fetal malformation or death on ultra-sonography and molar pregnancy. In contrast, patients with MSAFP levels 0.5 to < 2.5 MoM, HCG levels < 2.0 MoM were served as controls. Women with elevated HCG levels had more significant association with PIH than control group(22.2 % versus 3.4 % ; p < .005). Elevated MSAFP was significantly associated with preeclampsia(7.7 % versus 1.1 % ; p < .05). But no significant differences were observed in the incidence of preterm delivery. We suggested elevated second-trimester MSAFP or HCG levels appear to be correlated with high risk for PIH and preeclampsia. So, These patients require careful monitoring with adequate obstetric managements.