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Biomedical subjects

M Ollagnier

Publications and source records attributed to M Ollagnier.

At least 19 recordsLinked to original sources

[Cyclines and acne: pay attention to adverse drug reactions! A recent literature review].

PURPOSE: Cyclines are broad-spectrum antibiotics often used in acne. Side effects might occur precociously or more insidiously during long term treatment such in acne. The aim of this study is to review all adverse effects recently reported in this indication. CURRENT KNOWLEDGE AND KEY POINTS: A literature review from 1997 to 2001 has been conducted. Seventy-six articles reporting 250 cases have been found. Data analysis indicated that minocycline is the most widely incriminated molecule. Seventy-two cases revealed autoimmune disorders : lupus like syndrome associated or not with autoimmune hepatitis, 5 cases developed vasculitis. These reactions occurred in long term treatment (several weeks to several months). Fifteen cases of hypersensitivity syndromes and 3 cases of serum sickness like illness have been reported. These reactions occurred within the first weeks of exposure. Twenty-four cases of pseudotumor cerebri and 123 cases of abnormal pigmentations (skin, nails, mouth, bones or organs) have also been found. Eight cases presented other diseases. FUTURE PROSPECTS AND PROJECTS: Adverse effects of cyclines might be serious and sometimes unknown. Long term treatment by tetracyclines must be researched in patients presenting such symptoms. Moreover, several adverse drug reactions might be avoided by an optimal use of the drug (oesophageal ulcerations, photosensitivity) or by shorter periods of treatment (autoimmune disorders, pigmentations); only DRESS are drug adverse reactions unpredictable and sometimes severe.

Acne Vulgaris↗

[Roles of arterial dysplasia, chronic ergotism and other factors in a case multiple spontaneous arterial dissections].

INTRODUCTION: Spontaneous dissection of cervical and visceral arteries are rare and usually associated with an underlying arterial disease. EXEGESIS: The authors report the unusual case of a 50-year-old woman with high blood pressure who presented spontaneous dissection of cervico-cephalic, renal and hepatic arteries and of the descending aorta. She had been taking ergotamine tartrate for ten years for migraine. She also suffered from Raynaud's syndrome worsened by treatment. CONCLUSION: The respective roles of arterial dysplasia, chronic ergotism, renovascular hypertension and migraine are discussed.

Aortic Dissection↗

[Hemorrhagic syndromes related to selective serotonin reuptake inhibitor (SSRI) antidepressants. Seven case reports and review of the literature].

PURPOSE: Selective serotonin reuptake inhibitors (SSRIs) are widely prescribed. Since their release unexpected adverse effects such as bleeding disorders have been described. METHODS: Thirty patients with either hematoma or muco-cutaneous bleeding have been selected from case reports of the Saint-Etienne Pharmacovigilance center and from a literature review. RESULTS: The female/male sex-ratio was 3:4 and the mean age 42 years. Two newborns who had been exposed in utero to SSRIs were also included in the study. Eleven patients presented an underlying disease or were at risk. Various adverse effects such as bruising, hematoma, petechiae or purpura, epistaxis, and more rarely intestinal hemorrhage, ocular bleeding or cerebral hemorrhage were encountered. Symptoms were sometimes associated with prolonged bleeding time and platelet aggregation disorders and usually resolved within two days to four months after treatment discontinuation. CONCLUSION: Hematoma and muco-cutaneous bleeding would therefore be related to treatment, including selective serotonin reuptake inhibitors. However, these adverse effects are still poorly known and rarely reported. The main mechanism suggested would be a decrease in serotonin platelet leading to a defect in platelet aggregation. However, an increase in capillary fragility or susceptibility related to the patient's condition might be involved. Study of hemostasis history in patients requiring treatment with SSRIs might be of value.

Adolescent↗

Reports of hypoglycaemia associated with the use of ACE inhibitors and other drugs: a case/non-case study in the French pharmacovigilance system database.

AIMS: To test the existence of an association between reports of hypoglycaemia and angiotensin converting enzyme inhibitors, in a spontaneous reports database. METHODS: The French Pharmacovigilance database was examined for an association between adverse drug reaction reports mentioning hypoglycaemia, and angiotensin converting enzyme inhibitors (ACEI) using the case/non-case methodology, with reports of hypoglycaemia as cases and all other reports as comparators. The association between ACEI or other chosen drugs and hypoglycaemia was also tested in the subgroups of patients taking or not antidiabetic agents (ADA). RESULTS: 428 of 93,338 reports mentioned hypoglycaemia (202/2227 with ADA (OR 40, 95% CI 33-48)). 46/5717 reports mentioned ACEI (OR 1.8 (1.25-2.54)). Other study drugs associated with hypoglycaemia were cibenzoline (OR 80 (57-112)), disopyramide (OR 32 (22-46)), nifedipine (OR 2.16 (1.32-3.51)), diltiazem (OR 1.76 (1.01-3.06)) nitrates (nitroglycerin, molsidomine) (OR 1.91 (1.16-3.16)) and frusemide (OR 1.89 (1.31-1.76)), but not nicardipine, amlodipine, felodipine or nitrendipine, diazepam, atenolol or combination thiazide diuretics. However, ACEI and other drugs were associated with ADA, so that in the subgroups of patients taking or not ADA, the association of ACEI with hypoglycaemia disappeared (OR 0.9 (0.5-1.4) and 1.2 (0.7-2.2), respectively). The same was found for other drugs except cibenzoline. CONCLUSION: The association between reporting of hypoglycaemia and ACE inhibitors was related to concomitant use of antidiabetic agents. This was true also for other drugs used in arterial disease or renal failure, such as calcium channel blockers, nitrates, and frusemide.

Adverse Drug Reaction Reporting Systems↗

Simultaneous screening and quantitation of alpidem, zolpidem, buspirone and benzodiazepines by dual-channel gas chromatography using electron-capture and nitrogen-phosphorus detection after solid-phase extraction.

A rapid twin-column gas chromatographic (GC) method for simultaneous screening and determination of commonly prescribed benzodiazepines and other new anxiolytics from plasma is described. Identical fused-silica Ultra 2 (5% phenyl methyl silicone) columns were connected to nitrogen-phosphorus and electron-capture detectors. The drugs were isolated from 1 ml of plasma by solid-phase extraction (SPE) onto a C8 reversed-phase sorbent and recovered with 0.5% acetic acid in methanol. The eluate was reconstituted with isopropanol which was found suitable for on-column injection. Prazepam was used as internal standard. The method was found appropriate for the quantification in a single run of alpidem, alprazolam, buspirone, chlordiazepoxide, clobazam, clotiazepam, diazepam, estazolam, flunitrazepam, lorazepam, midazolam, oxazepam, tofisopam, triazolam, and zolpidem within 30 min. Limits of quantification allow toxicological or pharmacological determinations, except for buspirone: only toxic blood levels can be quantified by this method. This first SPE of imidazopyridines (alpidem and zolpidem) provides faster, more efficient and cheaper sample preparation than the traditional liquid-liquid procedure. This GC analysis of alpidem and zolpidem is also the first described procedure for simultaneous quantification of all different classes of anxiolytics.

Anti-Anxiety Agents↗

Gas chromatographic determination of zopiclone in plasma after solid-phase extraction.

A gas chromatographic technique for determining zopiclone based on a solid-phase extraction procedure with C18 cartridge for sample clean-up is presented. Quantification can be achieved with 1 ml of plasma. The method uses prazepam as internal standard. Zopiclone is separated on a 5% phenyl methyl silicone analytical column and detected with an electron-capture detector, which consequently allows a limit of quantitation of 2 micrograms/l. It is thus simple, rapid, sensitive and linear over the range 5-2000 micrograms/l.

Azabicyclo Compounds↗

Cough and ACE inhibitors.

Explore the source record for details and available documents.

Angiotensin-Converting Enzyme Inhibitors↗

[Unexplained chronic diarrhea, apropos of 4 new cases under Cyclo 3 fort and review of the literature].

We report 4 cases of chronic diarrhoea in patients treated with Cylclo 3 fort. This side-effect was not mentioned in the French list of therapeutic drugs until 1992. The diarrhoea was without faeces and without glairy mucus or blood. Symptomatic treatments were totally ineffective. The diarrhoea itself was well tolerated, but 3 patients lost weight, with hypokalaemia in 2 of them, and 1 had regressive acute renal failure. The time elapsed between the first dose of Cyclo 3 fort and the diarrhoea ranged from 1 to 3 months, and it took 5 months to make the aetiological diagnosis. Two patients were hospitalized. Withdrawal of the drug always resulted in cure. One patient taking enemas developed a regressive subocclusion of the bowel. The physiopathological mechanism of this diarrhoea is unknown. These cases are similar to the 5 other cases reported in the literature.

Acute Kidney Injury↗

Gas chromatographic determination of meprobamate in serum or plasma after solid-phase extraction.

This gas chromatographic technique of determining meprobamate is based on a solid-phase extraction permitting a time reduction of the analysis and improving sensitivity. Quantification is realized on 500 microliters of plasma. The method uses etidocaine as internal standard and does not require derivatization. Thus it is simple, rapid, sensitive and applicable in forensic and clinical toxicological laboratories.

Chromatography, Gas↗