品系编号：ILAS-002-S-000277

品系名称：SHR大鼠

英文名称：SHR rat

其它名称：Spontaneously Hypertensive Rat

物种描述：近交系

传代：

外观特征：毛色：。

遗传特征：染色体为21对?

品系来源：Okamoto 1963 from outbred Wistar Kyoto rats. Bred from a male with mild hypertension, mated with a female with high blood pressure. Brother x sister mating with continued selection for high blood pressure (Okamoto 1969, Okamoto et al 1972). A number of sublines have been developed with a tendency to develop cardiovascular lesions and stroke (see particularly SHRSP) (Nagaoka et al 1976), and hypercholesterolemia (Yamori 1984). For a recent review see Yamori, (1994). However, there is no evidence for substrain differentiation among SHR stocks from the major commercial suppliers in the USA both respect to phenotype and DNA fingerprints (Blizard et al, 1991). Strain WKY, developed from the same base populations is sometimes used as a normotensive control, though its use as such must be questioned as it differs at many genetic marker loci (Festing and Bender 1984, and see also strain WKY). Stelzin et al (1992) found that SHR and WKY shared only 50% of their DNA fingerprint bands, whereas SS and DS shared about 80% of bands. Most authorities suggest that WKY alone is not a good control strain, and that for most comparative studies several normotensive strains should be used. There is an extensive literature on the characteristics of SHR. DeJong (1984) provides a useful comparative review of this and other hypertensive strains, and there are regular symposia on hypertensive rat strains (see J. Hypertension 4(suppl):S1-S541, 1986, and Jpn. Heart J. 28:567-648).

相关亚系：

生物学特征：大鼠繁殖快。肠道较短，盲肠较大，但盲肠功能不发达。性情较凶猛、抗病力强。无胆囊。不能呕吐。不耐饥饿，肠内能合成维生素C。双子宫。胸部和鼠蹊部各有三对乳头。胰腺十分分散，位于胃和十二指肠弯曲处。

寿命与疾病：寿命3～4年。

研究应用：生物医学研究。

饲养与繁殖：大鼠2月龄时性成熟，性周期4天左右，妊娠期20（19～22），哺乳期21天，每天产仔平均8只，为全年、多发情性动物。?

保种单位：

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