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Biomedical subjects

B Guillot

Publications and source records attributed to B Guillot.

At least 109 records · Page 6Linked to original sources
PubMed1997

[Acute generalized exanthematic pustulosis after intake of clozapine (leponex). First case] case].

BACKGROUND: Acute generalized exanthematic pustulosis is a severe adverse drug reaction which occurs after taking antibiotics. Rare cases implicating psychotrops have been observed. CASE REPORT: A 71-year old women with schizophrenia was given closapine for six weeks when she developed an erythematopustular skin reaction and fever typical of acute generalized exanthematic pustulosis. The skin disease regressed one week after withdrawing clozapine. DISCUSSION: This is the first case of acute generalized exanthematic pustulosis observed after taking the neuroleptic drug, clozapine, used in severe schizophrenia.

Acute Disease↗
PubMed1996

Metastasizing eccrine porocarcinoma: report of a case and review of the literature.

Eccrine porocarcinoma is a rare malignant tumor arising from the intraepidermal ductal portion of the eccrine sweat gland (acrosyringium). It usually affects older persons and is located most commonly on the lower extremities. We describe a 55-year-old man with an aggressive metastasizing eccrine porocarcinoma diagnosed 10 years after the primary lesion. The metastatic lesions were located in the public area and scrotum and were associated with progressive lymphedema. Several biopsy specimens revealed numerous tumor cells in the dermis and especially in the lumina of lymph and blood vessels. Immunohistochemical studies showed staining with cytokeratin KL1, epithelial membrane antigen, Ca 15-3, and Ca 19-9. Vimentin, S-100 protein, neuron specific enolase, and carcino-embryonic antigen were negative. Treatment with carbon dioxide laser failed. The use of interferon alfa-2a for 9 months stopped progression of the tumor.

Acrospiroma↗
PubMed1996

[Acne induced by amineptin: adnexal toxiderma].

INTRODUCTION: Amineptine-induced acne is a classical side effect often encountered after prolonged and excessive use of the antidepressor. CASE REPORT: We report the case of a young female drug addict (benzodiazepines and alcohol) who denied overuse of amineptine. The initial inflammatory aspect of the lesion was unusual as was the histology report. The sebaceous glands were the site of cystic dilatation as would be expected, but in addition the sudoriparous glands showed keratinizing syringometaplasia with areas of neutrophilic eccrine hidradenitis. DISCUSSION: This is the second report of such a case similar to other due to chemotherapy, benaxoprofene or toxic agents for example, and corresponds to direct toxicity to the sudoriparous glands which accumulate amineptine. We therefore propose the term of adnexal toxic drug eruption.

Acne Vulgaris↗
PubMed1995

[Genetic bases of cutaneous tumors].

Carcinogenesis is a multigenic phenomenon where 3 prevailing types of genes are involved: oncogenes which stimulate the cell proliferation, tumor suppressor genes which act as inhibitors and metastagenes which contribute to the tumor progress. In animal models it has been shown that epithelial skin carcinogenesis proceeds stepwise: initiation, promotion, premalignant progression and finally malignant conversion. The oncogene c-H-ras and the tumor suppressor gene P53 are the genes whose involvement in these steps of epithelial skin cancers are duly established. Less experimental data are available concerning melanoma. the role of the oncogene N-ras, the tumor suppressor gene MTS-1 (encoding for protein p16) ans the metastagene nm 23 has recently be emphasized. Some cytogenetic abnormalities on chromosomes 1, 6, 9, 10, 11 and 17 have also been observed and incite to look for other genes potentially involved in the development of this tumor.

Cell Transformation, Neoplastic↗
PubMed1994

TEWL measurement standardization: kinetic and topographic aspects.

The aim of this study was to standardize the recording technique of the SERVO MED Ep 1C to determine the rest time required for human subjects to obtain stabilized values of transepidermal water loss (TEWL). Measurements of TEWL were performed on the flexor side of the forearm in healthy volunteers. First, different sites were tested on different days to study intra- and inter-individual variations. The recordings were carried out every 5 min for 2 h. Values reached a linear state after 15 min of rest. A time-course type curve of TEWL was established.

Adult↗
PubMed1994

[Vulvar involvement in Crohn disease].

INTRODUCTION: There are many skin manifestations of Crohn's disease including specific lesions occurring late after digestive signs. These manifestations are also termed metastatic and are rarely located on the vulva. CASE REPORT: We observed a metastatic localization in the vulva of Crohn's disease in a 34-year-old woman with predominantly rectosigmoid disease. The right labia major was greatly enlarged with oedema involving the inguinal cural area. Pustulization and erosive lesions were seen. The course of these lesions was independent of the colonic disease and responded temporarily only to a triple drug combination of metronidazol, prednisolone and minocyclin. CONCLUSION: This case emphasizes the frequency of colonic or rectal manifestations associated with vulval involvement in Crohn's disease. The metastatic lesions follow a course independent of the digestive disease raising therapeutic problems in this localization.

Adult↗
PubMed1994

[Prurigo pigmentosa].

Prurigo pigmentosa is a sudden onset recurrent papulopruriginous dermatosis characterized by reticulated pigmentation of the trunk. Histologically, there is a non-specific lichenoid tissue reaction. Several treatment regimens have been successful, including: dapsone, potassium iodide, cyclines. We report the seventh non-Japanese case observed in a 21-year-old native of Marrocco for whom treatment with cycline was unsuccessful.

Adult↗
PubMed1994

Techniques used to evaluate the cutaneous microcirculation: application of photoplethysmography to the assessment of a phlebotropic agent in the treatment of leg ulcers.

Over recent years, a number of functional investigations have been developed that allow a better evaluation of the physiology of the cutaneous microcirculation than that provided by the morphologic method. These investigations are also useful in pharmacologic studies. Following a review of the anatomy and physiology of the cutaneous microcirculation, the author presents the principal techniques of investigation and the results obtained with Daflon 500 mg* on the cutaneous microcirculation evaluated by photoplethysmography of the skin in patients with venous insufficiency and leg ulcers.

Blood Pressure↗
PubMed1993

[Postoperative respiratory function and cholecystectomy by laparoscopic approach].

Open cholecystectomy is associated with characteristic changes in pulmonary function showing a restrictive pattern. Laparoscopic cholecystectomy without opening of the peritoneal cavity could be an alternative in reducing postoperative respiratory dysfunction. Having given their informed consent, 13 healthy ASA1 patients (age: 41 +/- 18 yrs) undergoing laparoscopic cholecystectomy were enrolled in this study, in order to assess their postoperative pulmonary function tests (forced vital capacity [FRC], forced expiratory volume [FEV1], functional residual capacity [FRC]) before operation (T0) and 4 h (T4), 24 h (T24), 48 h (T48) after surgery. Anaesthesia technique was the same associating propofol-atracurium-fentanyl, 50% N2O/O2. Ventilation was adapted to maintain end-tidal carbon dioxide pressure up to 30-35 mmHg. Postoperative analgesic regimen consisted of paracetamol-ketoprofen. Mean length of surgery was 84 +/- 15 min; mean duration of anaesthesia was 110 +/- 24 min. An immediate and harmonious restrictive breathing pattern developed postoperatively. Postoperative FVC measured 65% (T4), 63% (T24), 72% (T48) of preoperative function (p < 0.025); postoperative FEV1 measured respectively 60, 66 and 75% of preoperative function (p > 0.001), without change in FEV1/CV and FRC; a significant hypoxia occurred (T0: 86 mmHg, T4: 80 mmHg, T24: 75 mmHg, T48: 81 mmHg [p < 0.05]). Laparoscopic cholecystectomy resulted in less postoperative respiratory dysfunction than conventional cholecystectomy, as previously reported; this restrictive pattern observed without changes in FRC was similar to that following lower abdominal surgery.

Adult↗