Infection & chemotherapy · 2024
Six-Year Study on Cutaneous Leishmaniasis in Al-Muthanna, Iraq: Molecular Identification Using ITS1 Gene Sequencing.
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Flaih Mohammed H, Alwaily Enas R, Hafedh Alyaa A, Hussein Khwam R
Аннотация
BACKGROUND: The current study aimed to determine the prevalence of cutaneous leishmaniasis (CL) in Al-Muthanna province (Iraq) and to characterize the Leishmania species that cause cutaneous lesions through conventional polymerase chain reaction techniques in some patients during the first 7 months of the year 2020.
MATERIALS AND METHODS: Medical information on patients with CL was obtained from archived records at the Al-Muthanna Health Office's Public Health Department (2015-2020). In the Al-Hussein Teaching Hospital laboratory, 95 CL samples were collected and examined microscopically for molecular characterization using Giemsa staining.
RESULTS: Between 2015 and 2020, 2,325 patients (1,184 men and 1,141 women) were enrolled. Although CL occurred across all age groups, those aged range of 5-14 years had the highest proportion of infections (53.0%). This study found that most infections occurred between December and February, peaking in January. Only 63 of 95 CL samples were positive for the Internal Transcribed Spacer 1 region. L. tropica was found in 39 samples (61.9%), whereas L. major was found in 24 samples (38.1%), in CL patients. Although dermal lesions develop in all body regions, a single lesion is the most common. The upper limbs (13 of 16 samples, 33.3%)were infected with L. tropica, whereas the lower limbs (9 of 14 samples, 37.5%) were infected with L. major. In contrast to L. major, most L. tropica lesions occur in urban areas.
CONCLUSION: Our study indicates that CL is endemic in the Al-Muthanna province and that two Leishmania spp. coexist in the province. Molecular diagnosis is a vital component in determining many clinical symptoms of the Leishmania parasite as well as implementing suitable therapeutic, epidemiological, and control strategies.
MATERIALS AND METHODS: Medical information on patients with CL was obtained from archived records at the Al-Muthanna Health Office's Public Health Department (2015-2020). In the Al-Hussein Teaching Hospital laboratory, 95 CL samples were collected and examined microscopically for molecular characterization using Giemsa staining.
RESULTS: Between 2015 and 2020, 2,325 patients (1,184 men and 1,141 women) were enrolled. Although CL occurred across all age groups, those aged range of 5-14 years had the highest proportion of infections (53.0%). This study found that most infections occurred between December and February, peaking in January. Only 63 of 95 CL samples were positive for the Internal Transcribed Spacer 1 region. L. tropica was found in 39 samples (61.9%), whereas L. major was found in 24 samples (38.1%), in CL patients. Although dermal lesions develop in all body regions, a single lesion is the most common. The upper limbs (13 of 16 samples, 33.3%)were infected with L. tropica, whereas the lower limbs (9 of 14 samples, 37.5%) were infected with L. major. In contrast to L. major, most L. tropica lesions occur in urban areas.
CONCLUSION: Our study indicates that CL is endemic in the Al-Muthanna province and that two Leishmania spp. coexist in the province. Molecular diagnosis is a vital component in determining many clinical symptoms of the Leishmania parasite as well as implementing suitable therapeutic, epidemiological, and control strategies.