PMID- 9040713 OWN - NLM STAT- MEDLINE DCOM- 19970326 LR - 20190514 IS - 0028-3878 (Print) IS - 0028-3878 (Linking) VI - 48 IP - 2 DP - 1997 Feb TI - HTLV-associated myelopathy in a cohort of HTLV-I and HTLV-II-infected blood donors. The REDS investigators. PG - 315-20 AB - OBJECTIVE: HTLV-I-associated myelopathy (HAM) is a slowly progressive spastic paraparesis caused by infection with human T-lymphotropic virus type I (HTLV-I). The prevalence of HAM among those infected with HTLV-I is poorly defined, and the association of a similar myelopathy with HTLV-II infection has not been confirmed. DESIGN: Cross-sectional examination of HTLV-I, HTLV-II, and control subjects from the baseline visit of a cohort study. SETTING/ SUBJECTS: Persons testing HTLV seropositive at the time of blood donation at five U.S. blood centers, their seropositive sex partners, and a matched control group of HTLV seronegative blood donors. MEASUREMENTS: HTLV-I and HTLV-II were differentiated by serology and/or polymerase chain reaction. All subjects received systematic neurologic screening examinations. RESULTS: A diagnosis of myelopathy was confirmed in four of 166 HTLV-I subjects (2.4%, 95% confidence interval 0.7%, 6.1%) and in one of 404 HTLV-II subjects (0.25%, 95% confidence interval 0.0%, 0.6%). None of the 798 controls had a similar myelopathy, although one had longstanding typical multiple sclerosis. CONCLUSIONS: Our data also suggest that HAM occurs more frequently among HTLV-I-infected subjects than reported by previous studies. The HTLV-II infected myelopathy patient identified in this cohort, together with three other case reports in the literature, implies a pathogenic role for this human retrovirus. The diagnosis of HTLV-associated myelopathy should be considered in cases of spastic paraparesis or neurogenic bladder when risk factors for HTLV-I or HTLV-II infection are present. FAU - Murphy, E L AU - Murphy EL AD - Department of Laboratory Medicine, University of California, San Francisco 94143-0884, USA. FAU - Fridey, J AU - Fridey J FAU - Smith, J W AU - Smith JW FAU - Engstrom, J AU - Engstrom J FAU - Sacher, R A AU - Sacher RA FAU - Miller, K AU - Miller K FAU - Gibble, J AU - Gibble J FAU - Stevens, J AU - Stevens J FAU - Thomson, R AU - Thomson R FAU - Hansma, D AU - Hansma D FAU - Kaplan, J AU - Kaplan J FAU - Khabbaz, R AU - Khabbaz R FAU - Nemo, G AU - Nemo G LA - eng GR - N01-HB-97077/HB/NHLBI NIH HHS/United States GR - N01-HB-97078/HB/NHLBI NIH HHS/United States GR - N01-HB-97079/HB/NHLBI NIH HHS/United States GR - etc. PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Neurology JT - Neurology JID - 0401060 SB - IM MH - AIDS Serodiagnosis MH - Adult MH - Blood Donors MH - Cohort Studies MH - Epidemiologic Methods MH - Female MH - HTLV-I Infections/*complications/*epidemiology MH - HTLV-II Infections/*complications/*epidemiology MH - Humans MH - Male MH - Middle Aged MH - Neurologic Examination MH - Paraparesis, Tropical Spastic/diagnosis/*epidemiology MH - Risk Factors MH - Sexual Partners MH - Urinary Incontinence/complications EDAT- 1997/02/01 00:00 MHDA- 1997/02/01 00:01 CRDT- 1997/02/01 00:00 PHST- 1997/02/01 00:00 [pubmed] PHST- 1997/02/01 00:01 [medline] PHST- 1997/02/01 00:00 [entrez] AID - 10.1212/wnl.48.2.315 [doi] PST - ppublish SO - Neurology. 1997 Feb;48(2):315-20. doi: 10.1212/wnl.48.2.315.