GB/T 35526-2017 in English
VALIDChemicals—A short-term screening assay for (anti) androgenic properties—Hershberger bioassay in rats
- Issued on:2017-12-29
- Implemented on:2018-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
《GB/T 35526-2017化学品 (抗)雄性性征短期筛选试验 大鼠Hershberger生物检测法》由TC251(全国危险化学品管理标准化技术委员会)归口,TC251SC1(全国危险化学品管理标准化技术委员会化学品毒性检测分会)执行,主管部门为国家标准化管理委员会。
Introduction
1. Background of standard formulation and technological evolution
GB/T 35526-2017 is based on OECD Chemical Test Method No. 441. Through years of verification and research, the reliability and reproducibility of the test are ensured. This standard clearly applies the Hershberger biological screening test to anti-androgen detection for the first time, and optimizes the experimental design in combination with modern laboratory conditions.
2. Comparative analysis of standard frameworks
| Tissue | Anti-androgen effect (%) | Androgen effect (%) |
|---|---|---|
| SV | 40% | 40% |
| VP | 40% | 45% |
| LABC | 20% | 30% |
| COW | 35% | 55% |
| GP | 17% | 22% |
Table 1 shows the maximum allowable CV values of different tissues under anti-androgen and androgen effects to ensure the accuracy of the experimental results.
3. Implementation suggestions
Animal selection and management:Preferably use common laboratory rat strains, ensure that there are at least 6 experimental animals in each group, and strictly control the weight difference within ±20%. Castration surgery should be performed 42 days after birth, and 7 days of adaptation are required after surgery.
Dose setting and poisoning route:It is recommended to set up three dose groups, the maximum dose should not exceed 1000 mg/(kg·d), and set up a positive control group (TP or FT) and a negative control group at the same time. Poisoning can be completed by gavage or subcutaneous injection.
Data analysis and quality control:Perform variance analysis on the target tissue mass to ensure that the CV value is within an acceptable range. For abnormal data, it is necessary to check for record errors or experimental technical problems and retest.

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