• Korean Journal of Oriental Medicine
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• v.16 no.1
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• pp.135-140
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• 2010

This study was carried out to investigate the acute toxicity and safety of Ssanghwa-tang extract fermented with Ganoderma lucidum. To evaluate the acute toxity and safety, 0(control group), 1250, 2500 and 5000 mg/kg of Ssanghwa-tang and fermented Ssanghwa-tang extracts were orally administered to 20 male and 20 female ICR mice. After single administration, we observed survival rates, general toxicity, changes of body weight, and autopsy. Compared with the control group, we could not find any toxic alteration in all treated groups (1250, 2500 and 5000 mg/kg). $LD_{50}$ of Ssanghwa-tang and fermented Ssanghwa-tang extracts might be over 5000 mg/kg and it is very safe to ICR mice.

• Korean Journal of Oriental Medicine
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• v.15 no.3
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• pp.93-98
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• 2009

In this research, the acute toxicity of fermented Yukmijihwangtang extract was examined using male and female ICR mice, To evaluate the acute toxity and safety, 0(control group), 1250, 2500 and 5000 mg/kg of fermented Yukmijihwangtang extract were orally administered to male and female ICR mice. After single administration, we observed survival rates, general toxicity, changes of body weight for the 14 days and autopsy at 1 day following the administration according to the Regulation of Korean Food and Drug Administration. Compared with the control group, we could not find any toxic alteration in all treated groups (1250, 2500 and 5000 mg/kg). $LD_{50}$ of fermented Yukmijihwangtang extract might be over 5000 mg/kg and it is very safe to ICR mice.

• Korean Journal of Pharmacognosy
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• v.42 no.3
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• pp.265-270
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• 2011

Acute toxicity of a combined preparation of the standardized extracts Scutellaria baicalensis GEORGI and Salvia miltiorrhiza BUNGE in a ratio of 3:1 was examined in male and female ICR mice. Mice were treated with the test substance intragastrically at a dose of 0 mg/kg, 5 mg/kg, 50 mg/kg, 500 mg/kg or 2,000 mg/kg and observed for two weeks. No death or abnormal clinical sign was shown during the observation period. Also there were no difference in net body weight gain, organ weight, and gross pathological findings at the terminal sacrifice. The results suggested that acute oral toxicity of a combined preparation of the standardized extracts is very low at the conditions employed in this study.

• The Journal of Korean Obstetrics and Gynecology
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• v.22 no.4
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• pp.19-27
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• 2009

Purpose: This study was carried out to investigate the acute toxicity and safety of fermented Ojeok-san(Wuji-san) extract. Methods: To evaluate the acute toxity and safety, 0(control group), 1250, 2500 and 5000 mg/kg of fermented Ojeok-san(Wuji-san) extract were orally administered to 20 male and 20 female ICR mice. After single administration, we observed survival rates, general toxicity, changes of body weight, and autopsy. Results: Compared with the control group, we could not find any toxic alteration in all treated groups (1250, 2500 and 5000 mg/kg). Conclusions: $LD_{50}$ of fermented Ojeok-san(Wuji-san) extract might be over 5000 mg/kg and it is very safe to ICR mice.

• Korean Journal of Environmental Biology
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• v.23 no.2 s.58
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• pp.146-151
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• 2005

Recent studies indicated the utility of whole effluent assessment as a measure to control discharge of toxic effluents to receiving water in Korea. However, most studies have been focussed on acute lethal effects of toxic wastewater with little consideration of chronic sublethal impacts which are of growing concern in protecting aquatic ecosystem. We conducted acute and chronic toxicity tests with effluents discharged from five different dyeing plants in Gyeong-gi province using a marine bacterium Vibrio fischeri and a freshwater macroinvertebrate Daphnia magna to demonstrate the importance of assessing chronic sublethal effects. Various levels of acute and chronic toxicities were observed in many samples tested in this study. In 21-d chronic toxicity tests using D. magna all samples showed effects on reproduction and growth. Notable mortalities were also noted in three out of five effluents. The result of the Microtox assay indicated that acute microbial toxicity existed in effluents from two out of five plants and acute daphnid toxicity was observed in only one effluent. The result of this study clearly suggests chronic toxicity tests are more suitable to assess biological effects of effluents because it was shown from this study that even an effluent with no acute toxicity could cause chronically lethal and/or sublethal adverse effects on aquatic biota which may affect the population dynamics in aquatic ecosystem.

• Journal of Korean Society of Environmental Engineers
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• v.27 no.2
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• pp.191-197
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• 2005

A new method, ToxTemp (TOXcity test based on TEMPerature control) using Ceridaphnia dubia was applied to evaluate the toxicity of insecticide materials and compared with the standard 48 hr acute bioassay. BPMC, diazinon and fenitrothion may cause the inhibition to the biological process in sewage treatment plant and need to detect toxicity within short contact time. The ToxTemp method showed sensitive detection with more shorter contact of 1-1.5 hr time than that of the standard 48 hr acute bioassay. To evaluate toxicity of real wastewater/sewage, the inhibition rate of nitrification and oxygen uptake rate (OUR) using activated sludge, the standard 48hr acute bioassay and ToxTemp method using C. dubia were compared, respectively. On the basis of the inhibition rate of nitrification, the OUR test showed the less sensitive results at the relatively strong toxic sewage. On the other hands, the standard 48hr acute bioassay and ToxTemp method using C. dubia represented the toxicity of each wastewater/sewage with high sensitivity. Even the slightly low (about 1.5%) sensitivity, the ToxTemp method showed the high applicability to the real site of sewage treatment plant.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.16
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• pp.7331-7335
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• 2015

Background: Concurrent chemoradiation with three weekly high dose cisplatin is the non-surgical standard of care for the treatment of locally advanced head and neck cancers. Although this treatment regime is efficacious, it has high acute toxicity, which leads not only to increased treatment cost, but also to increased overall treatment time. Hence, the current study was undertaken to evaluate the acute toxicity and tumor response in head and neck cancer patients treated with concurrent chemoradiation using $40mg/m^2$ weekly cisplatin, which has been our institutional practice. Materials and Methods: This single institution retrospective study included data for 287 head and neck cancer patients treated with concurrent chemoradiation from 2012 to 2014. Results: The mean age of the patients was 48.8 years. The most common site of involvement was oral cavity. Most of the study patients presented with advanced stage disease. The mean overall treatment time was 56.9 days. Some 67.2% had overall complete response to treatment as documented till 90 days from the start of treatment. According to the Radiation Therapy Oncology Group (RTOG) acute radiation morbidity scoring criteria, mucositis was seen in 95.1% of the patients. Dermatitis and emesis were observed in 81.9% and 98.6%, respectively. Regarding haematological toxicity, 48.8% and 29.6% suffered from anaemia and leukopenia, respectively, during treatment. Acute kidney injury was assessed using the Common Terminology Criteria for Adverse Events (CTCAE), and was found in 18.8% of the patients. Conclusions: Concurrent chemoradiotherapy with weekly cisplatin is an effective treatment regime for head and neck cancers with reasonable toxicity which can be used in developing countries, where cost of treatment is so important.

• Toxicological Research
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• v.13 no.4
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• pp.435-447
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• 1997

l-Muscone is synthesized for use as substitutive material of musk which is the active ingredient of woohwangchungsimwon. The objective of this investigation was to evaluate the acute and subacute toxicity of l-muscone in rats. In oral acute toxicity test, SPF Sprague-Dawley male and female rats were gayaged with l-muscone of two doses(0, 5.0 g/kg). No dead animal and abnormal autopsy findings were found in control and treated group. Body weights were slightly decreased in both sexes of rats treated with 5.0 g/kg. Therefore, oral $LD_{50}$ of l-muscone was consider to be higher than 5.0 g/kg in male and female rats. In intraperitoneal acute toxicity test, rats were injected intraperitoneally with dosages of 0, 1,000, 1,316, 1,732, 2,279 and 3.000 mg/kg. Decreased body weights and motor activities were observed at high dose group. Intraperitoneal $LD_{50}$ of l-muscone were 1,920 mg/kg in male and female rats. In the subacute study, l-muscone was administrated orally to both sexes of rats for 4 weeks as several doses(0, 10, 100 and 1,000 mg/kg). There were neither dead animals nor significant changes of body weights during the experimental period. In addition, no differences were found between control and treated groups in clinical signs, urinalysis, hematology, serum biochemical analysist and other findings. Above data suggest that no observed adverse effect level of l-muscone in rats might be over 1,000 mg/kg/day in this study.

• Korean Journal of Clinical Laboratory Science
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• v.44 no.2
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• pp.59-65
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• 2012

Previous studies have shown that modified Je-Ho-Tang (MJHT) has anti-platelet effects. Je-Ho-Tang (JHT), a Korean court beverage, is a traditional Korean herbal medicine that has been used for the treatment of a disease attended by great thirst, and for prevention of illness in hot summers. We made MJHT from JHT by excluding honey. The present study was performed to determine the acute oral toxicity of crude extract of MJHT in male and female ICR mice. We investigated the in vivo single dose acute toxicity of MJHT hot-water extraction. This test was orally administered once by gavage to 20 mice of each sex received doses of 0 (control group), 1250, 2500 and 5000 mg/kg body weight. Mortalities, clinical findings, autopsy findings and body weight changes were monitored daily for 14 days following the administration. We observed survival rates, general toxicities, changes of body weight, and autopsy. No significant lethality was observed after single oral administration of MJHT at the different dosages. Autopsies on the animals revealed no gross abnormalities. Therefore, the LD50 value of MJHT for ICR mice was estimated more than 5000 mg/kg by the oral route. These results suggest that no toxic dose level of MJHT in mice is considered to be more than 5000 mg/kg. Consequently, it was concluded that MJHT have no effect on acute toxicity and side effect in ICR mice.

• Herbal Formula Science
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• v.30 no.4
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• pp.281-291
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• 2022

Objectives : In this study, acute oral toxicity test of pomace Schisandra chinensis extracts was conducted in order to up-cycling to a high value-added industry using by-products discarded in the production process of Schisandra chinensis products and active ingredients such as dibenzocyclooctadiene lignans in Schisandra chinensis. Methods : Pomace Schisandra chinensis extracts were orally administered to SD-rats(female, n=3) without a control group according to the 'OECD guidelines'. After, mortality and clinical signs were observed, and the deceased animals were subjected to an autopsy. In addition, acute oral toxicity test was sequentially performed in step I (300 mg/kg), step II(300 mg/kg), step III(2,000 mg/kg), and step IV(2,000 mg/kg) according to the mortality. Results : There were no abnormalities caused by pomace Schisandra chinensis extracts in step I and step II. However, one animal each died in step III and step IV. In addition, clinical signs(salivation, decrease in food intake, prone position, decrease of locomotor activity, loss of locomotor activity, convulsion, hypothermia, lacrimation, staining around mouth, soiled perineal region, reddish urine, chromaturia, decrease of fecal volume, lying on side, blackish stool, no stool, compound-colored stool, refusal to feed, excitement, hypersensitivity, rigidity, dorsal position, etc.) were observed. But, no clinical signs were observed from 5th day, and experiment animals recovered completely. Conclusions : As a result of this study, pomace Schisandra chinensis extracts may exhibit acute toxicity at concentrations of 2,000 to 5,000 mg/kg, and the GHS classification was designated as 'Category 5'.