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Biomedical subjects

F el Sayed

Publications and source records attributed to F el Sayed.

32 records · Page 2Linked to original sources
PubMed1995

Measurement of actinic erythema in healthy subjects and in subjects with polymorphous light eruption using a tristimulus colorimeter.

BACKGROUND: The assessment of actinic erythema using a tristimulus colorimeter has only been reported from healthy volunteers but never from subjects with photodermatosis. OBJECTIVE: The aim of this study was to analyse the difference of chromometric measurements in patients with polymorphous light eruption versus healthy subjects. METHODS: Seventy-two subjects were subdivided according to two criteria: skin colour and clinical state. Measurements were done on a non-irradiated site and at the clinical minimal erythema dose site in the L*, a* and b* modes. RESULTS: The data submitted to two-way analysis of variance demonstrate the influence of skin colour and clinical state on the above parameters. CONCLUSION: Chromometric measurements of L* help to differentiate skin colour, whereas those of a* enable the discrimination of healthy subjects from those with photodermatosis.

Adult↗
PubMed1993

[Porphyria cutanea tarda and HIV-1 infection. 2 new cases].

We report two new cases of HIV-1 seropositive subjects who developed porphyria cutanea tarda (PCT). Laboratory examinations revealed a rise of uroporphyrin in the 24-hour urine and a fall of CD4 lymphocytes below 200/mm3 reflecting severe immuno-depression. Treatment with iterative phlebotomy resulted in regression of PCT. In both patients HIV seropositivity was discovered before PCT was diagnosed. Up to now, none of the hypotheses put forward concerning the exact role played by HIV in the genesis of PCT has been confirmed.

AIDS-Related Opportunistic Infections↗
PubMed1993

[Keratoderma palmoplantaris striata].

Keratoderma palmoplantaris striata is a rare disease, with a well-defined clinical presentation which differentiates it from other cutaneous keratoses. Although there is a familial incidence, sporadic cases have been reported. Extracutaneous lesions have also been observed. We report a new case which responded well to retinoid therapy.

Adult↗
PubMedDate not supplied

Contact allergy to 3-(4' methylbenzylidene) camphor and contact and photocontact allergy to 4-isopropyl dibenzoylmethane.

We report a clinical case of a 15-year-old boy who presented a photodistributed eruption after having used a sunscreen cream for 8 days. Photobiological testing showed a contact allergy to 3-(4' methylbenzylidene) camphor (Eusolex 6300) included in his sunscreen cream associated with a contact and photocontact allergy to 4-isopropyl-dibenzoylmethane (Eusolex 8020) not included.

Adolescent↗