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Biomedical subjects

N Auffret

Publications and source records attributed to N Auffret.

At least 19 recordsLinked to original sources
PubMed2001

Multicenter randomized comparative double-blind controlled clinical trial of the safety and efficacy of zinc gluconate versus minocycline hydrochloride in the treatment of inflammatory acne vulgaris.

BACKGROUND: In addition to tetracyclines, zinc may constitute an alternative treatment in inflammatory lesions of acne. OBJECTIVE: To evaluate the place of zinc gluconate in relation to antibiotics in the treatment of acne vulgaris. METHODS: Zinc was compared to minocycline in a multicenter randomized double-blind trial. 332 patients received either 30 mg elemental zinc or 100 mg minocycline over 3 months. The primary endpoint was defined as the percentage of the clinical success rate on day 90 (i.e. more than 2/3 decrease in inflammatory lesions, i.e. papules and pustules). RESULTS: This clinical success rate was 31.2% for zinc and 63.4% for minocycline. Minocycline nevertheless showed a 9% superiority in action at 1 month and one of 17% at 3 months, with respect to the mean change in lesion count. Regarding safety, the majority of the adverse effects of zinc gluconate and of minocycline concerned the gastrointestinal system and were moderate (5 dropouts with zinc gluconate and 4 with minocycline). CONCLUSION: Minocycline and zinc gluconate are both effective in the treatment of inflammatory acne, but minocycline has a superior effect evaluated to be 17% in our study.

Abdominal Pain↗
PubMed2000

[Descriptive epidemiological study of acne on scholar pupils in France during autumn 1996].

BACKGROUND: Acne is the most common symptom prompting patients to consult a dermatologist. No previous study has been conducted in France to determine the prevalence of acne and describe the main epidemiological features. SUBJECTS AND METHODS: A cross sectional study was conducted in November 1996 and included 913 school children aged 11 to 18 years. This sample was statistically representative of the entire secondary school population in France during the 1996-1997 school year. The subjects were stratified by 5 criteria: age, sex, rural or urban residence, sun exposure, type of school. RESULTS: Taking the clinical diagnosis made by the dermatologist investigator as the main criteria, the overall prevalence of acne was 72 p. 100. It was 76.1 p. 100 using the new ECLA grading system previously described. The prevalence of acne was sex and age dependent: highest scores were found for girls aged 14-16 years and for boys aged 16-17 years. Genetic factors were very important for the outcome of acne. Finally, 41 p. 100 of the acneic subjects were following a treatment, prescribed by a dermatologist in two-third of the cases. DISCUSSION: These results are in agreement with those previously published in the literature although some differences were disclosed. It would appear important to distinguish between minimal acne with a few retentional pimples occuring during adolescence and severe acne (more than 20 pimples on the face) requiring early medical care to avoid scarring.

Acne Vulgaris↗
PubMed1995

[Microsporum canis tinea ciliaris and blepharitis].

INTRODUCTION: The involvement of eyelashes and eyelids by dermatophytes is unfrequent. CASE REPORT: We describe such a case in a 48 year old woman, who presented with unilateral blepharitis, resistant to topical treatments with antiseptics, antibiotics and corticosteroids. Diagnosis was suspected by magnifying lens and Wood's light examination; Microsporum canis was isolated from broken eyelashes and scales of annular lesions of eyelids. CONCLUSION: This case emphasizes the interest of mycological examination of eyelashes and eyelids in front of a persisting unilateral blepharitis.

Blepharitis↗
PubMed1994

[Pachydermodactyly].

INTRODUCTION: Histologically pachydermodactyly results from fibromatosis. Characteristically, the clinical picture occurs almost exclusively in young men. The lesion is localized on the laterodorsal aspect of the proximal phalanges of both hands. CASE REPORT: We observed a 19-year-old man with deformity of the laterodorsal aspect of the first phalanx of the fingers on both hands which had been present for several years. The clinical course and histology of the deformity as well as the lack of any bone lesions led to the diagnosis of pachydermodactyly. COMMENTS: Pachydermodactyl is a rare disease. Our case was comparable to those reported in the literature. A mechanical cause is accepted by most authors.

Adult↗
PubMed1993

[Treatment of acne].

Treatment of acne has been largely modified during past years. This is due to a better comprehension of the physiopathological mechanisms involved and a better therapeutic approach according to the inflammatory status, the location and its extent. Also of importance as the availability of topical and systemic treatments with lead to a complete cure but recurrences cannot be excluded.

Acne Vulgaris↗
PubMed1990

Interaction of hydrophobic organic compounds with mercury adsorbed dioleoylphosphatidylcholine monolayers.

The interaction of hydrophobic organic compounds with biological membranes is an important factor in their biological activity. A fundamental insight into the mechanisms can be obtained by examining the influence of these substances on model membrane systems. The effect of four groups of hydrophobic aromatic compounds on a mercury-adsorbed dioleoylphosphatidylcholine (DOPC) monolayer is described in this paper. The compounds studied were: (1) polynuclear aromatic hydrocarbons (PAH), (2) polychlorinated biphenyls (PCB), (3) neurotoxic pesticides, and (4) phenothiazines. The monolayer properties were measured using phase-sensitive a.c. voltammetry and cyclic voltammetry. The response of the monolayer to these compounds is recorded as a change in the form of the capacity-potential curve especially with respect to two capacity peaks which correspond to two well-defined phase transitions. Planar aromatic molecules cause a negative shift of the capacity peaks, however, as the molecule becomes more globular the response becomes less and the peaks become suppressed. It is shown that planar aromatic molecules exert their effect by penetrating the hydrocarbon region of the monolayer and that there is a molecular size cut-off for higher membered PAH molecules. In addition, the monolayer is not so sensitive to the bulky PCB which have a more disruptive effect on the phase transitions and thus on the mechanisms of self-assembly of the monolayer. A direct correlation is shown between the biological membrane activity of the phenothiazines and their effect on the monolayer at submicromolar levels. A molecular selectivity of phospholipid monolayers to these compounds is indicated which has implications for their effect on biological membranes.

Adsorption↗
PubMed1989

[2 cases of villous tumor of the appendix].

Villous tumors of the vermiform appendix are uncommon with two cases and a review of the literature, the authors indicate the lack in specific clinical sign, and lay stress on the importance of the pathologic study on the therapeutic management.

Adenoma↗
PubMed1989

[Morphologic diagnosis of pulmonary hemorrhage].

The gross and histologic morphologic features of early and advanced pulmonary hemorrhages are easy to recognize. Although there is no close correlation between the hemorrhagic appearance of the bronchoalveolar lavage fluid, the histologic features of hemorrhage, and the score of hemosiderin in alveolar macrophages, studies of bronchoalveolar lavage fluid samples are valuable for diagnosing and monitoring pulmonary hemorrhages.

Biopsy↗