Detection of Schistosoma DNA in genital specimens and urine: A comparison between five female African study populations originating from S. haematobium and/or S. mansoni endemic areas.
Pillay P, Downs JA, Changalucha JM, Brienen EAT, Ramarokoto CE, Leutscher PDC, Vennervald BJ, Taylor M, Kjetland EF, Van Lieshout L. Acta Trop. 2020;204:105363.
Female Genital Schistosomiasis (FGS) is a neglected disease affecting millions, however challenging to diagnose. This explorative descriptive study compares Schistosoma real-time PCR analysis of cervico-vaginal lavages (CVL) with corresponding urine and stool samples of 933 women from five different previously described study populations. Sampling included 310 women from an S. mansoni endemic region in Mwanza, Tanzania and 112 women from a nearby S. haematobium endemic region. Findings were compared with samples collected from S. haematobium endemic regions in South Africa from 394 women and from 117 women from Madagascar of which 79 were urine pre-selected microscopy positive cases from highly-endemic communities and 38 were urine microscopy negatives from a low-endemic community.
As anticipated, urine and stool microscopy and gynecological investigations varied substantially between study populations; however, the same Schistosoma real-time PCR was performed in one reference laboratory. Schistosoma DNA was detected in 13% (120/933) of the CVL, ranging from 3% in the S. mansoni Tanzanian endemic region to 61% in the pre-selected Malagasy urine microscopy positive cases. Detectable Schistosoma DNA in CVL was associated with Schistosoma DNA in urine but not with microscopic detection of eggs in urine or by cytological examination.
This study confirmed real-time PCR for the detection of Schistosoma DNA in gynecological samples to be a valuable diagnostic tool to study the distribution of FGS within schistosomiasis endemic areas.
Hotez PJ, Harrison W, Fenwick A, Bustinduy AL, Ducker C, Sabina Mbabazi P, Engels D, Kjetland EF. PLoS Negl Trop Dis. 2019 Apr 4;13(4):e0007025. doi: 10.1371/journal.pntd.0007025. PMID: 30946746; PMCID: PMC6448816.
Galappaththi-Arachchige HN, Zulu SG, Kleppa E, Lillebo K, Qvigstad E, Ndhlovu P, Vennervald BJ, Gundersen SG, Kjetland EF, Taylor M.
Banhela N, Taylor M, Zulu SG, Strabo LS, Kjetland EF, Gundersen SG
Association of Urogenital Symptoms with History of Water Contact in Young Women in Areas Endemic for S. haematobium. A Cross-Sectional Study in Rural South Africa.
Galappaththi-Arachchige HN, Hegertun IEA, Holmen S, Qvigstad E, Kleppa E, Sebitloane M, Ndhlovu PD, Vennervald BJ, Gundersen SG, Taylor M, Kjetland EF
Magaisa K, Taylor M, Kjetland EF, Naidoo PJ
Holmen SD, Kleppa E, Lillebø K, Pillay P, van Lieshout L, Taylor M, Albregtsen F, Vennervald BJ, Onsrud M, Kjetland EF
Schistosoma haematobium infection and CD4+ T-cell levels: a cross-sectional study of young South African women
Kleppa E, Klinge KF, Galaphaththi-Arachchige HN, Holmen SD, Lillebø K, Onsrud M, Gundersen SG, Taylor M, Ndhlovu P, Kjetland EF
Gynecological Manifestations, Histopathological Findings, and Schistosoma-Specific Polymerase Chain Reaction Results Among Women With Schistosoma haematobium Infection: A Cross-sectional Study in Madagascar
Randrianasolo BS, Jourdan PM, Ravoniarimbinina P, Ramarokoto CE, Rakotomanana F, Ravaoalimalala VE, Gundersen SG, Feldmeier H, Vennervald BJ, van Lieshout L, Roald B, Leutscher P, Kjetland EF
Holmen SD, Kjetland EF, Taylor M, Kleppa E, Lillebø K, Gundersen SG, Onsrud M, Albregtsen F