Ezenabike Chimezie, S Ashaka Oluwaseyi, A Omoare Adesuyi, Fadeyi Abayomi, K Salami Alakija, O Agbede Olajide
Department of Medical Microbiology and Parasitology, College of Health Sciences, University of Ilorin, Ilorin, Nigeria.
Department of Medicine, College of Health Sciences, University of Ilorin, Ilorin, Nigeria.
Curr Med Mycol. 2020 Jun;6(2):43-48. doi: 10.18502/CMM.6.2.3662.
The potential for the invasion of the central nervous system by species is underscored by the presence of this organism in the blood of immunocompromised individuals. Early adoption of sensitive methods for the diagnosis of species will reduce the high morbidity and mortality associated with this disease. Regarding this, the aim of the present research was to detect cryptococcal antigen among HIV1- infected individuals in north-central Nigeria.
This prospective cross-sectional study was carried out on HIV-1 infected individuals accessing care at three health facilities in north-central Nigeria between November 2014 and March 2017. For the purpose of the study, blood samples were collected from 300 HIV1-infected individuals within the age group of 3-65 years. The CD4+ T-cell count was determined, and the samples were analyzed for cryptococcal antigenemia using the methods of lateral flow assay (LFA) and culture technique.
antigen was detected in 19.67% (59/300) of the patients, and only 25.4% (15/59) of the LFA-positive samples showed species growth on Sabouraud dextrose agar after 3 days. Furthermore, fungal growth was observed in one of the specimens, which was LFA negative. Additionally, 30 of the 59 LFA-positive patients had cryptococcal antigen in their serum with a CD4+ T-cell count of < 150 cells/mm.
As the findings of the present study indicated, infection with species is a problem among HIV-infected patients in the region under study. Therefore, all HIV patients, especially those with a CD4+ T-cell count of < 150 cells/mm, referring to the HAART clinics in Nigeria, should be screened for cryptococcal antigen.
免疫功能低下个体血液中存在这种生物体,凸显了该物种侵入中枢神经系统的可能性。尽早采用敏感方法诊断该物种将降低与这种疾病相关的高发病率和死亡率。关于此,本研究的目的是在尼日利亚中北部的HIV-1感染个体中检测隐球菌抗原。
这项前瞻性横断面研究于2014年11月至2017年3月在尼日利亚中北部的三个卫生机构对接受治疗的HIV-1感染个体进行。为了该研究,从300名年龄在3至65岁的HIV-1感染个体中采集了血样。测定了CD4 + T细胞计数,并使用侧向流动分析(LFA)方法和培养技术对样品进行隐球菌抗原血症分析。
在19.67%(59/300)的患者中检测到抗原,并且在3天后,只有25.4%(15/59)的LFA阳性样品在沙氏葡萄糖琼脂上显示出该物种生长。此外,在一个LFA阴性的标本中观察到真菌生长。另外,59名LFA阳性患者中有30名血清中存在隐球菌抗原,其CD4 + T细胞计数<150个细胞/mm³。
正如本研究结果所示,在所研究地区的HIV感染患者中,该物种感染是一个问题。因此,所有前往尼日利亚HAART诊所就诊的HIV患者,尤其是那些CD4 + T细胞计数<150个细胞/mm³的患者,都应进行隐球菌抗原筛查。