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MME Marie-Helene FROUIN-PETIT

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Auteur de référence en rhumatologie
31 articles scientifiques publiés — un praticien à la pointe de la recherche

Rhumatologue

RPPS 10001315117

✨ Génération du profil synthétique IA en cours…

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Top publications · les plus citées

IL-17 triggers the onset of cognitive and synaptic deficits in early stages of Alzheimer's disease

Cell reports · 2021

📚 173 citations🎯 RCR 11.05Top 2% NIH🔓 Open Access📄 PDF gratuit ↗

Anti-Inflammatory Treatment with FTY720 Starting after Onset of Symptoms Reverses Synaptic Deficits in an AD Mouse Model

International journal of molecular sciences · 2020

📚 27 citations🎯 RCR 1.46🔓 Open Access📄 PDF gratuit ↗

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Therapeutic approaches providing effective medication for Alzheimer’s disease (AD) patients after disease onset are urgently needed. Previous studies in AD mouse models suggested that physical exercise or changed lifestyle can delay AD-related synaptic and memory dysfunctions when treatment started in juvenile animals long before onset of disease symptoms, while a pharmacological treatment that can reverse synaptic and memory deficits in AD mice was thus far not identified. Repurposing food and drug administration (FDA)-approved drugs for treatment of AD is a promising way to reduce the time to bring such medication into clinical practice. The sphingosine-1 phosphate analog fingolimod (FTY720) was approved recently for treatment of multiple sclerosis patients. Here, we addressed whether fingolimod rescues AD-related synaptic deficits and memory dysfunction in an amyloid precursor protein/presenilin-1 (APP/PS1) AD mouse model when medication starts after onset of symptoms (at five months). Male mice received intraperitoneal injections of fingolimod for one to two months starting at five to six months. This treatment rescued spine density as well as long-term potentiation in hippocampal cornu ammonis-1 (CA1) pyramidal neurons, that were both impaired in untreated APP/PS1 animals at six to seven months of age. Immunohistochemical analysis with markers of microgliosis (ionized calcium-binding adapter molecule 1; Iba1) and astrogliosis (glial fibrillary acid protein; GFAP) revealed that our fingolimod treatment regime strongly down regulated neuroinflammation in the hippocampus and neocortex of this AD model. These effects were accompanied by a moderate reduction of Aβ accumulation in hippocampus and neocortex. Our results suggest that fingolimod, when applied after onset of disease symptoms in an APP/PS1 mouse model, rescues synaptic pathology that is believed to underlie memory deficits in AD mice, and that this beneficial effect is mediated via anti-neuroinflammatory actions of the drug on microglia and astrocytes.

Phase IV postmarketing surveillance study shows continued efficacy and safety of Stempeucel in patients with critical limb ischemia due to Buerger's disease

Stem cells translational medicine · 2021

📚 17 citations🎯 RCR 1.35🩺 Clinique🔓 Open Access📄 PDF gratuit ↗

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Abstract Buerger's disease or thromboangiitis obliterans is a type of obstructive vascular diseases categorized as vasculitis and usually present in 95% of young smoker men. The main pathogenetic mechanism is interplay between immune system and inflammation. Earlier our phase II study has shown that Stempeucel is safe when injected at 2 million cells/kg body weight by virtue of its anti-inflammatory, immunomodulatory, and angiogenetic properties. The present study was conducted to further assess the safety and efficacy of Stempeucel in critical limb ischemia due to Buerger's disease after obtaining approval from Indian FDA based on the data generated in the phase II study. This is an open label, multicenteric phase IV PMS study conducted across India with experienced vascular surgeons. Fifty patients of critical limb ischemia due to Buerger's disease with Rutherford III-5 or III-6 were included in the study and each individual received a dose of 2 million cells/kg body weight of Stempeucel in the calf muscles and around the ulcer. These patients were evaluated over 12 months from drug administration. The present study showed the continued long term efficacy over a period of 12 months follow up in these patients corroborating the result obtained in the previous phase II studies. There was significant improvement in rest pain, ankle systolic pressure, and ankle brachial pressure index with accelerated ulcer healing. In conclusion, the present study shows that the intramuscular administration of Stempeucel continues to be safe, tolerable, and effective alternative treatment in patients with Buerger's disease.

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MME Marie-Helene FROUIN-PETIT

Pourquoi vous devez consulter ce praticien

Lieu de consultation

Tarifs & secteur de conventionnement

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Top publications · les plus citées

Publications scientifiques (31) — classées par pathologie

Transversal12

Arthrite juvénile2

Vascularites des gros vaisseaux2

Anti-IL-171

csDMARDs1

Économie santé1

Épidémiologie & registres1

Essai clinique1

Génétique1

JAK inhibiteurs1

Lombalgie1

Lupus1

Maladie à IgG41

Qualité de vie / PROMs1

Revue générale1

Sjögren1

Vascularites1

Vraie vie / RWE1

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