Detection of ehrlichiae in African ticks by polymerase chain reaction.
نویسندگان
چکیده
Discussion It is obvious from these results that there was a significant exposure,t.o filariasis in the I mine workers, resulting in the productiov of anti-filarial antibodies. In the case of IgGl it is possiblq that the antibody response was due to exposure tdin-coming infective larvae rather than infection with the adult parasite, as there is a n active infective larvae (Km. As previously noted, active filarial infection ts who were positive for IgG antibody had anadult worm in situ, but it is difficult to explain why they <e 1 antigen negative as IgG4 positivity in indige ons is almost invariably associated with anti Retal., 1993).Itis known from previo e infected indigenegulated immune ates mount a vigorous tissue resp ,MAN, 1947) andi t the filarial antigen is boundinto animm ex near the site of the worm andnot liberated int d. It is alsopossiblethat the lled the worm shortly after it became establi 1 that 'the filarial antigen had been cIeared from efork the person was tested. This study suggests s a threat to expamate workers and travellers their work environment and lifestyle CO e them to mosquito bites. This possibility should be considered when investigating illness in returnees from filarial-endemic areas. There is no proven prophylaxis against filariasis and the only effective means of control is protection from mosquito bites. A follow-up study which will include collection of clinical data, testing for microfilaraemia, the use of scrotal ultrasound to detect adult worms (DREYER et al., 1999) and the effects of treatment, is being planned.
منابع مشابه
Molecular Detection of Crimean-Congo Hemorrhagic Fever Virus in Ticks in Qom Province, Iran, 2011-2012
Background and Aims: Crimean-Congo hemorrhagic fever (CCHF) is a zoonosis caused by a Nairovirus of the family Bunyaviridae. Infection is transmitted to humans mostly by Hyalomma ticks. This study was conducted to determine the rate of CCHFV infection in ticks in Qom province of Iran. Materials and Methods: In this study, Reverse transcription – polymerase chain reaction (RT-PCR) was used...
متن کاملDetection and identification of spotted fever group Rickettsiae and Ehrlichiae in African ticks.
Rickettsia africae, a recently identified pathogen, was detected for the first time in Amblyomma ticks from Niger, Mali, Burundi, and Sudan, and "R. mongolotimonae" was identified for the first time in Africa. Rickettsiae of unknown pathogenicity and two new ehrlichiae of the Ehrlichia canis group were identified in ticks from Mali and Niger.
متن کاملPrevalence of granulocytic Ehrlichiae in Ixodes ricinus ticks in Middle Germany (Thuringia) detected by PCR and sequencing of a 16S ribosomal DNA fragment.
A total of 305 Ixodes ricinus ticks (243 nymphs and 62 adults) were collected from three different regions of Thuringia in Middle Germany which are known to be endemic for Borrelia burgdorferi. Our aim was to investigate the carrier rate of ticks for granulocytic Ehrlichia species. The presence of ehrlichial 16S ribosomal DNA was investigated by polymerase chain reaction. Using primers specific...
متن کاملDetection of Ureaplasma Urealyticum in Clinical Samples from Infertile Women by Polymerase Chain Reaction
Genital Ureaplasma urealyticum infection is considered to be a sexually transmitted infection. The bacterium has been found to be involved in PID, chorioamnionitis, urethritis, respiratory distress syndrome and pneumonia in newborn, abortion and infertility. U. urealyticum infections not only jeopardize fertility but also pose a risk for infertility treatment and resulting pregnancies. The purp...
متن کاملMolecular Detection of Anaplasma bovis in Cattle from Central Part of Iran
Anaplasma bovis is a leukocytotropic agent of bovine anaplasmosis and there is no available information about molecular study on this agent in cattle of Iran. In this study a total 150 cattle blood samples were collected from central part of Iran. The presence of A. bovis examined using light microscopic detection and species-specific nested polymerase chain reaction (nested-PCR) based on 16S r...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Transactions of the Royal Society of Tropical Medicine and Hygiene
دوره 94 6 شماره
صفحات -
تاریخ انتشار 2000