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Biomedical subjects

F E Leon-S

Publications and source records attributed to F E Leon-S.

28 records · Page 2Linked to original sources
PubMed1993

The first reported case of radial nerve palsy.

Radial nerve injury produced by anterior dislocation of the shoulder is uncommon. Here I present a probable case from 3,000 years ago, described in the Bible. My report is based on the "medical history" only. Differential diagnosis, laboratory findings, and treatment are discussed.

Bible↗
PubMed1993

Identification of human T cell leukemia virus type IIb infection in the Wayu, an aboriginal population of Colombia.

Human T cell leukemia virus type II (HTLV-II) is endemic in a number of native American populations and high rates of infection have also been demonstrated in intravenous drug abusers (IVDAs). Studies of virus isolates in the latter population have shown the existence of two closely related subtypes of the virus, HTLV-IIa and HTLV-IIb. To characterize the viruses present in native Americans, we analyzed by nucleotide sequence analysis the proviruses from the Wayu, an aboriginal population residing in Colombia, South America. The results showed HTLV-IIb infection in this population, and also demonstrated remarkable conservation of sequence when compared to the proviruses in IVDAs.

Base Sequence↗
PubMedDate not supplied

Instability of R3 response of the blink reflex in patients with HAM/TSP.

HAM/TSP patients presenting interneuronal hyperexcitability of the brainstem displayed the R3 response with closed eyes but this was either diminished or disappeared contralaterally to the stimulation side when they were tested with their eyes open. Lack of regulation of the interneuronal network between R1 and R3 could be the most probable cause of these features.

Adult↗
PubMedDate not supplied

Contralateral early blink reflex in multifocal motor neuropathy.

Multifocal motor neuropathy (MMN) is a clinical entity affecting the peripheral nerve system mainly. We present here a Colombian man, 37 year-old, who presented MMN, and interestingly, displayed abnormal responses in the blink reflex after electrical stimulation of the supraorbital nerves. These findings allow us to suggest that the lesion distribution in MMN mostly the subclinical one, seems to be more widespread than usually thought.

Adult↗