实验性氟中毒小鼠毛发中几种微量元素含量的研究

让年幼小白鼠饮用不同浓度的 N a F水溶液一个月造成其氟中毒 ,然后分析其毛发中 Fe、Cu、Zn、Se等微量元素的含量。结果发现 Fe、Cu、Zn的含量明显下降或有下降趋势 ,而 Se能抑制其下降。这一结果对氟中毒的防治具有一定的意义     

我国不同地区回族青年发中微量元素含量测定和比较研究

利用了子体发射光谱法对自１８个省,市,自治区（县）的５２例回族青年学生的头发中６种微量元素的含量进行了测定,用方差分析法进行了差别显著性检验,考查了地区分布因素以及性别因素对回族发样中６种微量元素的含量的影响,本文发现民族因素对回族发中６种微量元素含量的影响大于地区因素的影响。     

秦巴山区生态环境对当地居民毛发中微量元素的影响

测定了秦巴山区136例健康儿童及22例成人毛发中Zn、Fe、Ca、Cu、Mg、Al、Se、Mn、Pb、Cr共10种微量元素的含量,结果表明,在所测10种元素中,除Mg外,其余9种元素均有不同程度的缺乏或超标,其中Al、Mn与Cr含量严重超标,其均值分别是正常含量上限的2.04、1.67及2.07倍,超标人数比例分别高达83.54%、77.85%和72.78%;Zn和Se含量均值则比正常含量下限低,仅为正常含量下限的91.96%和68.33%,缺乏人数比例分别为69.62%和79.11%.结合当地的生态环境与地球化学背景,对微量元素缺乏或超量的原因及危害进行了分析.     

大熊猫体内微量元素的PIXE分析——Ⅰ.毛发和肝脏的微量元素

众所周知,微量元素对生物的生存、健康和疾病有着重大的关系。通过长期的研究,已逐步形成了微量元素医学学科(孔祥瑞,1982;Prosad,A.S.,1976;Underwood,E.J.,1977)。 我们应用PIXE(质子激发X射线)分析方法,对比研究了健康的和有疾病的大熊猫的毛发和肝脏内微量元素的变化,为大熊猫的人工饲养和临床诊断提供一些数据和资料。     

猎豹生理生化指标的测定

猎豹 (Ａｃｉｎｏｎｙｘｊｕｂａｔｕｓ )属食肉目、猫科、猎豹属 ,为大型食肉动物 ,原产于非洲草原 ,数量稀少 ,属《濒危野生动植物物种国际贸易公约》 (ＣＩＴＥＳ)附录Ⅰ动物。上海野生动物园于 1997年首次在国内繁殖并人工哺育成功这一珍稀动物 ,繁殖的 11只猎豹全部成活。现已有 2 0只 ,形成一较大的猎豹种群。有关猎豹的生理生化指标报道很少 ,而动物的生理生化指标是反映其机体状况的重要指标 ,也是实验研究的基础资料 ,更可为猎豹的驯养、繁殖及疾病诊治等提供重要的参考资料。为此 ,我们对本园 2 0只猎豹 (其中成年 9只 ,幼年 11只…     

树鼩毛发的亚显微结构比较研究

本文用透射电镜和扫描电镜对树鼩毛发和食虫目鼩鼱、灵长目懒猴等动物毛发的亚显微结构进行了比较研究,发现树鼩毛发和食虫目鼩鼱毛发的毛小皮形态和髓部亚显微结构存在明显差异;与灵长目懒猴等动物毛发比较,其结构亦各具特点。因而作者认为在种属关系上,应将树鼩单列一目为宜。     

猎豹粪样皮质醇代谢研究

采用放射性免疫法测量猎豹粪样中皮质醇代谢的含量,通过不同时间点的动态采样分析皮质醇含量的变化。在研究的6个雌性猎豹中,粪样皮质醇含量显示它们能够分成3个不同的组,高皮质醇含量的雌性猎豹组(～295.22ng/g粪样,n=2)、中等皮质醇含量雌性猎豹组(～152.29ng/g粪样,n=2)、偏低的皮质醇含量的雌性猎豹组(～94.14ng/g粪样,n=2)。外源压力影响了猎豹的繁殖性能,而皮质醇的代谢水平是反映猎豹来自外源压力的一个重要指标。本研究拟通过猎豹粪样中皮质醇的含量评估动物所处的环境压力水平,为饲养管理水平和饲养环境的改善提供有益的借鉴,进而为解决动物的繁殖问题提供新的思路和方法。     

山楂叶中微量元素的含量测定

本文采用高频等离子体发射光谱法(ICP-AES)测定了山楂叶中的17种微量元素,其中有8种是必需的微量元素,K、Ca、P、Mg 含量较高,Zn、Cu含量比值为2.7。这些微量元素的存在对维持人体健康极为重要.     

The composition of cheetah (Acinonyx jubatus) milk

Milk was obtained from two captive bred cheetahs. The nutrient content was 99.6 g protein; 64.8 g fat; and 40.21 g lactose per kg milk. Small amounts of oligosaccharides, glucose, galactose and fucose were noted. The protein fraction respectively consisted of 34.2 g caseins per kg milk and of 65.3 g whey proteins per kg milk. Very little variation in milk composition among the individual cheetahs was noted. Electrophoresis and identification of protein bands showed a similar migrating sequence of proteins as seen in lion's and cat's milk, with small differences in the β-caseins. The lipid fraction contains 290.4 g saturated and 337.3 g mono-unsaturated fatty acids per kg milk fat respectively. The high content of 279.5 g kg^− 1 milk fat of polyunsaturated fatty acids is due to a high content in α-linolenic acid. No short chain fatty acids, but substantial levels of uneven carbon chain fatty acids were observed.     

Human hair growth enhancement in vitro by green tea epigallocatechin-3-gallate (EGCG)

Green tea is a popular worldwide beverage, and its potential beneficial effects such as anti-cancer and anti-oxidant properties are believed to be mediated by epigallocatechin-3-gallate (EGCG), a major constituent of polyphenols. Recently, it was reported that EGCG might be useful in the prevention or treatment of androgenetic alopecia by selectively inhibiting 5alpha-reductase activity. However, no report has been issued to date on the effect of EGCG on human hair growth. This study was undertaken to measure the effect of EGCG on hair growth in vitro and to investigate its effect on human dermal papilla cells (DPCs) in vivo and in vitro. EGCG promoted hair growth in hair follicles ex vivo culture and the proliferation of cultured DPCs. The growth stimulation of DPCs by EGCG in vitro may be mediated through the upregulations of phosphorylated Erk and Akt and by an increase in the ratio of Bcl-2/Bax ratio. Similar results were also obtained in in vivo dermal papillae of human scalps. Thus, we suggest that EGCG stimulates human hair growth through these dual proliferative and anti-apoptotic effects on DPCs.     

野生大熊猫的年龄鉴定

本文根据大熊猫门齿齿骨质年轮线数目鉴定了大熊猫的实际年龄,并按其头骨各骨缝的生长愈合情况及臼齿磨损程度将大熊猫划分为6个年龄组。     

A preliminary study on hair length in the Japanese monkey (Macaca fuscata fuscata)

The hair length of Japanese monkeys was investigated. The hair of the Japanese monkey is long on the back and the lateral side of the upper arm and short on the back of the hand. There was variation in the length of hairs in the same region of the body. The distribution of hair length approximated to a normal curve and did not display any marked bias or skewness. The increase in length of hairs was remarkable from 0 to 1 year of age, and then continued at a constant rate. Sex differences in hair length were not so remarkable at any age.     

用聚类分析方法对土家族和瑶族人发中7种元素综合指标的比较研究

对我国土家族、瑶族青年人体头发中钙、镁、铁、锰、铜、锌、铬等7种金属元素进行了测定。用聚类方法对元素含量的综合指标进行了考查、比较研究。结果表明,土家族与瑶族青年人体头发中这7种元素的综合指标存在明显的差别,民族之间区别较大。     

Differences in hair density of Japanese monkeys (Macaca fuscata fuscata) with locality and age

The hair density of free-ranging Japanese monkeys (Macaca fuscata fuscata) living in three different areas was investigated. The Japanese monkeys had thicker hair than other macaques. The hair density in the Japanese monkeys varied with locality: the northern monkeys had thicker hair than the southern ones. The density did not vary markedly with age up to 3 years of age, but then decreased gradually up to adult age (≧7 years old). The remarkable growth of the trunk suggested that the total number of hairs increased with age, especially during the period as a juvenile.     

Growth rate of 21 captive-born,mother-raised cheetah cubs

This paper presents the growth rate of 21 clinically normal, mother-raised. captive cheetah cubs from birth through 45 days of age. The development of a growth curve for healthy, mother-raised cheetah cubs provides a diagnostic tool for individuals involved in cheetah propagation. Use of the curve may alert caretakers to problems early and thus help reduce the high neonatal mortality rate seen in captive-born cheetah cubs. The growth curve was constructed using 21 (11 males and 10 females) captiveborn cheetah cubs from six litters (offspring of three unrelated adult males and three unrelated adult females) born at the Columbus Zoo from September 1985 through December 1989. Each cub was weighed to the nearest gram the morning after birth and approximately the same time every consecutive morning for 45 days. The mean weight the morning after birth was 463 g (range 385–542 g). The average litter size was 3.5 (range 2–4, n = 6). The daily weight gain was 40–50 g/cub/day.     

川金丝猴体毛微量元素的分析

应用等离子发射光谱法分析了秦岭产川金丝猴体毛中Ｎａ、Ｋ、Ｃａ、Ｍｇ、Ｚｎ、Ｃｄ、Ｃｏ、Ｃｕ、Ｎｉ、Ｓｒ、Ｌｉ、Ｆｅ、Ａｌ、Ｍｎ、Ｂ、Ｐ１６种微量元素的含量,发现除Ｚｎ与Ｍｎ有显著的性别差异外,余者无显著的性别差异,一般雄性稍高于雌性。与四川产川金丝猴体毛中的Ｚｎ、Ｃａ、Ｃｕ、Ｆｅ含量比较,两地区样本均有极显著的差异。