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【公司名稱】廣州健侖生物科技有限公司

【市場(chǎng)部】楊永漢
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【騰訊】
【公司地址】廣州市清華科技園健新基地番禺石樓鎮(zhèn)健啟路63號(hào)二期2幢101-103室

弓形蟲病是由一種剛地弓形蟲（Toxoplasma gondii）引起的人和動(dòng)物的感染。弓形蟲屬于形體zui小、結(jié)構(gòu)簡(jiǎn)單的一類叫作原蟲的寄生蟲。貓和其他貓科動(dòng)物是弓形蟲的終宿主，它寄生在這些動(dòng)物的小腸上皮細(xì)胞內(nèi)，形成囊合子（許多文章稱作“囊合子”，不夠準(zhǔn)確）隨糞便排出，其他哺乳動(dòng)物和鳥吃進(jìn)去發(fā)生感染，在它們身體的組織內(nèi)發(fā)育成為包囊。囊合子和包囊是弓形蟲的不同發(fā)育階段。雖然弓形蟲并不“挑剔”，但是除了終宿主以外，在其他動(dòng)物體內(nèi)只能進(jìn)行無(wú)性繁殖，不能向外界散播它的后代。[] 弓形蟲屬頂端復(fù)合物亞門(subphylum Apicomplexa)，孢子蟲綱(clss sporozoasida)，真球蟲目(order Eucoccidiorida)，細(xì)胞內(nèi)寄生性原蟲，其生活史中出現(xiàn)種形態(tài)，即滋養(yǎng)體(速殖子，tachyzoite);包囊(可長(zhǎng)期存活于組織內(nèi))，呈圓形或橢圓形，直徑～μm，破裂后可釋出緩殖子，(bradyzoite);裂殖體;配子體和囊合子(oocyst)，前期為無(wú)性生殖，后期為有性生弓形蟲生活史的完成需雙宿主：在終宿主(貓與貓科動(dòng)物)體內(nèi)，上述種形成俱存;在中間宿主(包括禽類，哺乳類動(dòng)物和人)體內(nèi)則僅有無(wú)性生殖而無(wú)有性生殖，無(wú)性生殖?？稍斐扇砀腥?，有性生殖僅在終宿主腸粘膜上皮細(xì)胞內(nèi)發(fā)育造成局部感染，囊合子由貓糞排出，發(fā)育成熟后含二個(gè)孢子囊(sporocyst)，各含個(gè)子孢子(sporozoite)，在電鏡下子孢子的結(jié)構(gòu)與滋養(yǎng)體相似，囊合子被貓?zhí)蚴澈蟆?/p>

Toxoplasmosis is an infection of humans and animals caused by Toxoplasma gondii. Toxoplasma gondii belongs to a parasite called a protozoa with the smallest body and simple structure. Cats and other felines are the ultimate hosts of Toxoplasma gondii. They parasitize in the intestinal epithelial cells of these animals and form capsular oysters (many articles called "capsules", not accurate enough) are excreted with feces, other mammals and birds eat. Into the infection, they develop into cysts in their body tissues. Capsules and cysts are different stages of development of Toxoplasma gondii. Although Toxoplasma gondii is not “findling”, except for the final host, it can only reproduce asexually in other animals and cannot disseminate its offspring to the outside world. [] The subphylum Apicomplexa, the clss sporozoasida, the order Eucoccidiorida, and the intracellular parasitic protozoa of the Toxoplasma genus, have a morphological form in their life history, ie, trophozoites ( Tachyzoite); cysts (which can survive for a long period of time in tissues), round or elliptical, ～μm in diameter, and can release bradyzoites after rupture; schizonts; gametophytes and capsular zygotes (oocyst), asexual reproduction in the early stage, and completion of the life history of the sexual T. gondii in the later period require two hosts: in the final host (cats and felines), the above species are formed; in the intermediate host (including birds, breastfeeding) In animals and humans, there is only asexual reproduction and no sexual reproduction. Asexual reproduction can often cause systemic infections. Sexual reproduction develops only in the terminal host's intestinal mucosal epithelial cells to cause local infection. The zygosae are excreted by cat feces. After ripening, it contained two sporocysts, each containing sporozoites. The structure of sporozoites was similar to that of trophozoites under the electron microscope. The capsules were eaten by cats.

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