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单词 Lamblia intestinalis
释义

Lamblia intestinalis

中文百科

兰氏贾第鞭毛虫 Giardia lamblia

(重定向自Lamblia intestinalis)

蓝氏贾第鞭毛虫(学名:Giardia lamblia)又称蓝布尔吉亚尔氏鞭毛虫梨形鞭毛虫,简称贾第虫。属于鞭毛虫纲,主要寄生在人体肠道内,引起腹痛、腹泻和吸收不良等症状。致梨形鞭毛虫病(giardiasis),为人体肠道感染的常见寄生虫之一。旅行者和儿童易患病。贾第虫也可感染动物,如哺乳动物、鸟类、爬虫类、两栖动物。在鸟类,贾第虫可以让鸟身体痒,以致把羽毛着掉。1681年由雷文霍克所发现并描绘下来。

贾第虫喜欢栖息于冷水里,如山上的河水、冷泉等。在美国,贾第虫是除了细菌以外最常造成腹泻的疾病。避免贾第虫的方法为煮熟水源,或是在水里加微量的碘可以杀死贾第虫。宠物有贾第虫的疫苗。

英语百科

Giardia lamblia 兰氏贾第鞭毛虫

(重定向自Lamblia intestinalis)
Life cycle of Giardia lamblia
This picture shows multiple views of a single Giardia lamblia (intestinalis) cyst as imaged at different instrument settings by confocal microscopy. Bar = 10 micrometers(A) is the cyst imaged by transmission (differential interference contrast), only.(B) is the cyst wall selectively imaged through use of fluorescent-labelled (TRITC) antibody that is cyst-wall specific.(C) is the cyst imaged through use of carboxy fluorescein diacetate, a viability stain.(D) is a composite image of (B) and (C).(E) is a composite image of (A), (B), and (C).
Quiste de Giardia con tinción de lugol

Giardia lamblia is a flagellated protozoan parasite that colonizes and reproduces in the small intestine, causing giardiasis. The parasite attaches to the epithelium by a ventral adhesive disc, and reproduces via binary fission. Giardiasis does not spread via the bloodstream, nor does it spread to other parts of the gastrointestinal tract, but remains confined to the lumen of the small intestine. Giardia trophozoites absorb their nutrients from the lumen of the small intestine, and are anaerobes. If the organism is split and stained, its characteristic pattern resembles the familiar "smiley face" symbol. Chief pathways of human infection include ingestion of untreated sewage, a phenomenon particularly common in many developing countries; contamination of natural waters also occurs in watersheds where intensive grazing occurs.

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更新时间:2025/6/21 22:58:04