- 產(chǎn)品描述
隱孢子蟲核酸PCR檢測試劑盒
廣州健侖生物科技有限公司
Cellabs公司是一個(gè)的生物技術(shù)公司,總部位于澳大利亞悉尼。專門研發(fā)與生產(chǎn)針對熱帶傳染性疾病的免疫診斷試劑盒。其產(chǎn)品40多個(gè)國家和地區(qū)。1998年,Cellabs收購TropBio公司,進(jìn)一步鞏固其在研制熱帶傳染病、寄生蟲診斷試劑方面的位置。
隱孢子蟲核酸PCR檢測試劑盒
該公司的Crypto/Giardia Cel IFA是國標(biāo)*推薦的兩蟲檢測IFA染色試劑、Crypto Cel Antibody Reagent是UK DWI水質(zhì)安全評估檢測的*抗體。
【Cellabs公司中國代理】
Cellabs公司中國代理商廣州健侖生物科技有限公司自2014年就開始與Cellabs公司攜手達(dá)成戰(zhàn)略合作伙伴,熱烈慶祝廣州健侖生物科技有限公司成為Cellabs公司中國代理商。
我司為悉尼Cellabs公司在華代理商,負(fù)責(zé)Cellabs產(chǎn)品在中國的銷售及售后服務(wù)工作,詳情可以我司公司人員。
主要產(chǎn)品包括:隱孢子蟲診斷試劑,賈第蟲診斷試劑,瘧疾診斷試劑,衣原體檢測試劑,絲蟲診斷試劑,錐蟲診斷試劑等。
廣州健侖生物科技有限公司與cellabs達(dá)成代理協(xié)議,歡迎廣大用戶咨詢訂購。
隱孢子蟲的相關(guān)知識
隱孢子蟲(Cryptosporidium Tyzzer,1907)為體積微小的球蟲類寄生蟲。廣泛存在多種脊椎動物體內(nèi),寄生于人和大多數(shù)哺乳動物的主要為微小隱孢子蟲(C.parvum),由微小隱孢子蟲引起的疾病稱隱孢子蟲?。╟ryptosporidiosis),是一種以腹瀉為主要臨床表現(xiàn)的人畜共患性原蟲病。
卵囊呈圓形或橢圓形,直徑4~6μm,成熟卵囊內(nèi)含4個(gè)裸露的子孢子和殘留體(residual body)。子孢子呈月牙形,殘留體由顆粒狀物和一空泡組成。在改良抗酸染色標(biāo)本中,卵囊為玫瑰紅色,背景為藍(lán)綠色,對比性很強(qiáng),囊內(nèi)子孢子排列不規(guī)則,形態(tài)多樣,殘留體為暗黑(棕)色顆粒
隱孢子蟲完成整個(gè)生活史只需一個(gè)宿主。生活史簡單,可分為裂殖生殖,配子生殖和孢子生殖三個(gè)階段。蟲體在宿主體內(nèi)的發(fā)育時(shí)期稱為內(nèi)生階段。隨宿主糞便排出的成熟卵囊為感染階段。
人和許多動物都是本蟲的易感宿主,當(dāng)宿主吞食成熟卵囊后,在消化液的作用下,子孢子在小腸脫囊而出,
先附著于腸上皮細(xì)胞,再侵入其中,在被侵入的胞膜下與胞質(zhì)之間形成帶蟲空泡,蟲體在空泡內(nèi)開始無性繁殖,先發(fā)育為滋養(yǎng)體,經(jīng)3次核分裂發(fā)育為Ⅰ型裂殖體。成熟的Ⅰ型裂殖體含有8個(gè)裂殖子。裂殖子被釋出后侵入其它上皮細(xì)胞,發(fā)育為第二代滋養(yǎng)體。第二代滋養(yǎng)體經(jīng)2次核分裂發(fā)育為Ⅱ型裂殖體。成熟的Ⅱ型裂殖體含4個(gè)裂殖子。此裂殖子釋出后侵入腸上皮發(fā)育為雌、雄配子體,進(jìn)入有性生殖階段,雌配子體進(jìn)一步發(fā)育為雌配子,雄配子體產(chǎn)生16個(gè)雄配子,雌雄配子結(jié)合形成合子,進(jìn)入孢子生殖階段。合子發(fā)育為卵囊。卵囊有薄壁和厚壁兩種類型,薄壁卵囊約占20%,僅有一層單位膜,其子孢子逸出后直接侵入宿主腸上皮細(xì)胞,繼續(xù)無性繁殖,形成宿主自身體內(nèi)重復(fù)感染;厚壁卵囊約占80%,在宿主細(xì)胞內(nèi)或腸腔內(nèi)孢子化(形成子孢子)。孢子化的卵囊隨宿主糞便排出體外,即具感染性。完成生活史約需5~11天。
我司還提供其它進(jìn)口或國產(chǎn)試劑盒:登革熱、瘧疾、流感、A鏈球菌、合胞病毒、腮病毒、乙腦、寨卡、黃熱病、基孔肯雅熱、克錐蟲病、違禁品濫用、肺炎球菌、軍團(tuán)菌、化妝品檢測、食品安全檢測等試劑盒以及日本生研細(xì)菌分型診斷血清、德國SiFin診斷血清、丹麥SSI診斷血清等產(chǎn)品。
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【Cellabs公司產(chǎn)品介紹】
公司的主要產(chǎn)品有:隱孢子蟲診斷試劑,賈第蟲診斷試劑,瘧疾診斷試劑,衣原體檢測試劑,絲蟲診斷試劑,錐蟲診斷試劑等。Cellabs 的瘧疾ELISA試劑盒成為臨床上的一個(gè)重要的診斷工具盒科研上的重要鑒定工具。其瘧疾抗原HRP-2 ELISA檢測試劑盒和瘧疾抗體ELISA檢測試劑盒已經(jīng)成為醫(yī)學(xué)研究所的*試劑盒。Cellabs產(chǎn)品主要包括以下幾種方法學(xué):直接(DFA)和間接(IFA)免疫熒光法,酶聯(lián)免疫吸附試驗(yàn)(ELISA),和膠體金快速測試。所有產(chǎn)品都是按照GMP、CE標(biāo)志按照ISO13485。
二維碼掃一掃
【公司名稱】 廣州健侖生物科技有限公司
【】 楊永漢
【】
【騰訊 】 2042552662
【公司地址】 廣州清華科技園創(chuàng)新基地番禺石樓鎮(zhèn)創(chuàng)啟路63號二期2幢101-3室
【企業(yè)文化】
(2)改良抗酸染色法:染色后背景為藍(lán)綠色,卵囊呈玫瑰色,圓形或橢圓形,囊壁薄,內(nèi)部可見1~4個(gè)梭形或月牙形子孢子,有時(shí)尚可見棕色塊狀的殘留體。但糞便標(biāo)本中多存在紅色抗酸顆粒,形同卵囊,難以鑒別。
(3)金胺酚—改良抗酸染色法:先用金胺—酚染色,再用改良抗酸染色復(fù)染,用光學(xué)顯微鏡檢查,卵囊形態(tài)同抗酸染色所示,但非特異性顆粒呈藍(lán)黑色,顏色與卵囊不同,有利于查找卵囊,優(yōu)化了改良抗酸染色法,提高了檢出率。
(4)基因檢測:采用PCR和DNA探針技術(shù)檢測隱孢子蟲特異DNA,具有特異性強(qiáng)、敏感性高的特點(diǎn)。在PCR中使用相應(yīng)的引物,可擴(kuò)增出隱孢子蟲DNA特異的452bp片段,其敏感性可達(dá)0.1pg水平。
免疫學(xué)診斷
隱孢子蟲病的免疫學(xué)診斷近年發(fā)展較快,具有彌補(bǔ)糞檢不足的優(yōu)點(diǎn)。
(1)糞便標(biāo)本的免疫診斷:均需采用與卵囊具高親和力的單克隆抗體。在IFAT的檢測中卵囊在熒光顯微鏡下呈明亮黃綠色熒光,特異性高、敏感性好。適用于對輕度感染者的診斷和流行病學(xué)調(diào)查。采用ELISA技術(shù)檢測糞便中的卵囊抗原,敏感性、特異性均好,勿需顯微鏡。流式細(xì)胞計(jì)數(shù)法可用于卵囊計(jì)數(shù),考核療效。
(2)血清標(biāo)本的免疫診斷:常采用IFAT、ELISA和酶聯(lián)免疫印跡試驗(yàn)(ELIB),特異性、敏感性均較高,可用于隱孢子蟲病的輔助診斷和流行病學(xué)調(diào)查。
隱孢子蟲病呈世界性分布。迄今已有74個(gè)國家,至少300個(gè)地區(qū)有報(bào)道。各地感染率高低不一,一般發(fā)達(dá)國家或地區(qū)感染率低于發(fā)展中國家或地區(qū)。在腹瀉患者中,歐洲、北美洲隱孢子蟲檢出率為0.6%~20%,亞洲、大洋州、非洲和中南美洲為3%~32%。很多報(bào)道認(rèn)為,隱孢子蟲的發(fā)病率與當(dāng)?shù)氐目漳c彎曲菌、沙門氏菌、志賀氏菌、致病性大腸桿菌和藍(lán)氏賈第鞭毛蟲相近,在寄生蟲性腹瀉中占*。隱孢子蟲(Cryptosporidium Tyzzer,1907)為體積微小的球蟲類寄生蟲。廣泛存在多種脊椎動物體內(nèi),寄生于人和大多數(shù)哺乳動物的主要為微小隱孢子蟲(C.parvum),由微小隱孢子蟲引起的疾病稱隱孢子蟲?。╟ryptosporidiosis),是一種以腹瀉為主要臨床表現(xiàn)的人畜共患性原蟲病。
(2) Improved acid-fast staining: After staining, the background is blue-green, the oocysts are rose-colored, round or oval, the walls of the cysts are thin, 1 to 4 spindles or crescent-shaped spores are visible inside, and there are fashion visible brown Massive residual body. However, there are more red anti-acid particles in the stool specimens, which are identical to the oocysts and are difficult to identify.
(3) Aminophenol-improved acid-fast staining: First stained with auramine-phenol, then counterstained with modified acid-fast staining, and examined by light microscopy. The oocysts were shown with acid-fast staining, but non-specific particles were present. Blue-black, the color is different from the oocysts, which helps to find the oocysts, optimize the improved acid-fast staining method, and increase the detection rate.
(4) Gene detection: Using PCR and DNA probe technology to detect the specific DNA of Cryptosporidium has the characteristics of strong specificity and high sensitivity. Using the corresponding primers in PCR, a 452 bp fragment specific for Cryptosporidium spp. DNA can be amplified with a sensitivity of 0.1 pg.
Immunological diagnosis
The immunological diagnosis of cryptosporidiosis has developed rapidly in recent years and has the advantage of making up for the lack of fecal examination.
(1) Immunodiagnosis of fecal specimens: Monoclonal antibodies with high affinity to the oocysts should be used. In the IFAT assay, the oocysts were bright yellow-green fluorescence under fluorescence microscopy with high specificity and sensitivity. Applicable to the diagnosis and epidemiological investigation of mildly infected persons. Using ELISA technique to detect oocyst antigen in feces, the sensitivity and specificity are good, do not need microscope. Flow cytometry can be used for oocyst counts to assess efficacy.
(2) Immunological diagnosis of serum specimens: IFAT, ELISA, and enzyme-linked immunoblot (ELIB) assays are often used. They have high specificity and sensitivity and can be used for the auxiliary diagnosis and epidemiological investigation of cryptosporidiosis.
Cryptosporidiosis has a worldwide distribution. So far, 74 countries have reported at least 300 areas. The infection rates vary from place to place, and the rate of infection in developed countries or regions is generally lower than in developing countries or regions. Among patients with diarrhea, the detection rates of Cryptosporidium in Europe and North America were 0.6% to 20%, and 3% to 32% in Asia, Oceania, Africa, and Central and South America. Many reports suggest that the incidence of Cryptosporidium is similar to that of local Campylobacter jejuni, Salmonella, Shigella, pathogenic Escherichia coli, and Giardia lamblia. It accounts for the first place among parasite diarrhea. Cryptosporidium Tyzzer (1907) is a tiny coccidial parasite. Extensively in many vertebrates, parasites in humans and most mammals are mainly C. parvum, and the disease caused by C. parvum is called cryptosporidiosis. Diarrhea is a major clinical manifestation of zoonotic protozoal disease.