DATABASE-RESEARCH | GROUP OF CLINICAL PATIENT RESEARCH | ||||||
Antoinette PECHERE BERTSCHI | Head of group CV | Research subject | Members of the group |
Links about the group
Dr. A. PECHERE HUG/Spécialités de médecine Serv.Endo.Diab.Nutrition Rue Gabrielle-Perret-Gentil 4 1211 Genève 14 Suisse antoinette.pechere@hcuge.ch Tel.: 022 372 95 98 Fax: 022 372 93 59 Comments Pages updated the 17.11.2015 |
Reseach's subject
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Group's publications
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Research's domains
Arterial blood pressure
Our research projects aim to study :
- The regulation of the arterial blood pressure in women, in relationship with the segmental renal sodium handling and the renal hemodynamics. We investigate the
influence of the endogenous and exogenous sex female hormones on the sodium sensitivity of the blood pressure and the renal hemodynamic response. Different physiologic situations as the luteal and
follicular phases of the normal menstrual cycle , the menopause, the effects of the oral contraceptives have been characterized. The effects of the renin cascade blockade using angiotensin II receptors
blockers on normotensive and hypertensive salt-repleted women are also analysed.
- The pathophysiology of the systemic hypotension and its association with the renal segmental handling of sodium, and
its potential damaging consequences on some ophthalmologic morbidities are also investigated. Our projets aim to investigate pathogenic mechanisms common for both the kidney and the eye. We have
shown that women suffering from orthostatic hypotension had a renal nocturnal proximal wasting of sodium, this phenomenon aggravating the decrease of the systemic blood pressure. We also demonstrated that
a high salt diet prevented orthostatic hypotension and associated symptoms. We now challenge the hypothesis that a dysregulation of the autonomous nervous system and other neuro-humoral cascades
alters the renal sodium handling and favours systemic hypotension. This ultimately may be deleterious for the ocular perfusion and possibly the visual acuity, in certain ocular conditions as the normal
pressure glaucoma. We plan to study the effect of a high salt diet and drugs on the preservation of the visual field in this particular condition. In certain families, normal pressure glaucoma and
hypotension are highly prevalent, and we will analyse certain genetic polymorphisms associated with the renal sodium handling and the arterial blood pressure.
- The effects of the peroxisomal proliferator-activated receptor-gamma agonist pioglitazone on renal and hormonal responses to salt in healthy men. This study is conducted in a population of hypertensive patients and in subjects with diabetes type II, randomized to take pioglitazone vs. placebo, and pioglitazone vs. metformine respectively. The aim focuses on characterizing the occurrence of peripheral edema and the mechanisms triggering the sodium and water retention with these drugs. We perform a complete renal hemodynamic study, with the clearances of inulin and para-amino-hippurate, renal segmental sodium handling with the clearance of the endogenous lithium, the neuro-hormonal profile and the monitoring of the 24h ambulatory blood pressure, on both a low and a high salt diet for a 7 day period. - We are also working, in collaboration with the Services of Anesthesiology, HUG and of Nephrology, CHUV, Lausanne, the regulation of the arterial pressure in normal pregnancies and in pre-eclampsia. We plan to study the association between these conditions and certain variants of genes as CYP3A5 et ABCB1, eNOS, adrenergic receptors. Polymorphisms of these genes have been shown to be linked, in some hypertensive subgroups, with a high ambulatory blood pressure and with sodium sensitivity of the arterial pressure. - We are participating in an international multicentric controlled study on the effects of sulodexide on preventing the nephropathy in diabetic II patients with moderate renal failure and proteinuria Group's publications Angiotensin II receptor blockade improves the renal response to salt in menopausal women. CURRENT THERAPEUTIC RESEARCH, CLINICAL AND EXPERIMENTAL 2008 vol. 69(2) pp. 467-479 PECHERE ANTOINETTE, MAILLARD MARC, BISCHOF PAUL, FATHI MARC, BURNIER MICHEL Renal sodium handling in patients with normal pressure glaucoma CLINICAL SCIENCE 2007 vol. 112 pp. 337-344 PECHÈRE-BERTSCHI A, SUNARIC-MEGEVAND G, HAEFLIGER I, PANARELLO F, MAILLARD M, BURNIER M Gonadal steroids, salt-sensitivity and renal function CURRENT OPINION IN NEPHROLOGY AND HYPERTENSION 2007 vol. 16 pp. 16-21 PECHÈRE-BERTSCHI A, PECHERE-BERTSCHI, A Twelve-year trends and correlates of dietary salt intakes for the general adult population of Geneva, Switzerland EUROPEAN JOURNAL OF CLINICAL NUTRITION. 2007 vol. 2 pp. 116- BEER-BORST S, COSTANZA MC, PECHÈRE-BERTSCHI A, MORABIA A Again and again...new recommendations for the management of hypertension REVUE MÉDICALE SUISSE 2007 vol. 3(124) pp. 1987-1988 WAEBER B, BURNIER M, PECHÈRE-BERTSCHI A Hypertension in pregnancy REVUE MÉDICALE SUISSE 2007 vol. 3(124) pp. 2012-2015 CLIVAZ MARIOTTI L, SAUDAN P, LANDAU CAHANA RUTH, PECHÈRE-BERTSCHI A Analysis of contrast-enhanced MR images to assess renal function MAGNETIC RESONANCE MATERIALS IN PHYSICS BIOLOGY AND MEDICINE 2006 vol. 19 pp. 167-179 MICHOUX N, VALEE JP, PECHERE-BERTSCHI A, MONTET X, BUEHLER L, VAN BEERS BE A link between sodium sensitivity and pharmacogenomics of antihypertensive drugs (article in french) REVUE MEDICALE DE LA SUISSE ROMANDE 2006 vol. 2(61) pp. 986-991 ERNANDEZ T, PECHERE-BERTSCHI A, DAYER P, DESMEULES J Prise en charge initiale de l'hypertension artérielle en médecine de premier recours : un état des lieux REVUE MEDICALE DE LA SUISSE ROMANDE 2006 vol. 2 pp. 2024-2034 NARDO P, BOVIER P, PECHERE-BERTSCHI A Antihypertensive agents used as first line agents: beta-blockers under pressure REVUE MÉDICALE SUISSE 2006 vol. 2(78) pp. 2019-2020 BURNIER M, PECHÈRE-BERTSCHI A, WAEBER B Complications cutanées des traitements anti-hypertenseurs REVUE MEDICALE DE LA SUISSE ROMANDE 2005 vol. 1 pp. 2093-2097 GRÜNENWALD M, PECHERE ANTOINETTE, PRINS C, PECHERE M Female Sex Hormones, Salt, and Blood Pressure Regulation AMERICAN JOURNAL OF HYPERTENSION : JOURNAL OF THE AMERICAN SOCIETY OF HYPERTENSION 2004 vol. 17 pp. 994-1001 PECHÈRE-BERTSCHI A Reasons for not intensifying antihypertensive treatment (RIAT): a primary care antihypertensive intervention study JOURNAL OF HYPERTENSION 2004 vol. 22 pp. 1221-1229 HESS L, PECHÈRE-BERTSCHI A, MUGGLI F, BURNIER M Mikrohämaturie PRIMARY CARE : CLINICS IN OFFICE PRACTICE 2004 vol. 4 pp. 843-847 PECHERE ANTOINETTE, STALDER HANS Renal segmental tubular response to salt during the normal menstrual cycle KIDNEY INTERNATIONAL 2002 vol. 61 pp. 425-431 PECHÈRE-BERTSCHI A, MAILLARD M, STALDER H, BRUNNER HR, BURNIER M Research's domains |