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Central role of altered phosphodiesterase 2-dependent signaling in the pathophysiology of cognition-based brain disorders

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Neural Regeneration Research 2025年第8期20卷 2302-2303页

作者： Asma Boulksibat Alessandra Tempio Barbara Bardoni Institut de Pharmacologie Moléculaire et Cellulaire CNRS UMR7275Inserm U1323ValbonneFrance

The second messengers 3',5'-cyclic adenosine monophosphate(cAMP)and 3',5'-cyclic guanosine monophosphate(cGMP)modulate molecular pathways that are involved in a large variety of cellular *** the brain,these processes include neurogenesis,neuronal differentiation,activation and function of microglia,and synaptic plasticity,finally resulting in memory formation.

关键词： formation processes finally

Deciphering the mechanobiology of microglia in traumatic brain injury with advanced microsystems

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Neural Regeneration Research 2025年第8期20卷 2304-2306页

作者： Anthony Procès Sylvain Gabriele univ.Grenoble Alpes InsermU1216Grenoble Institut des NeurosciencesGrenobleFrance Mechanobiology&Biomaterials Group CIRMAPResearch Institute for BiosciencesUniversity of MonsMonsBelgium

Advanced microsystems in traumatic brain injury research:Traumatic brain injury(TBI)results from a mechanical insult to the brain,leading to neuronal and axonal damage and subsequently causing a secondary *** minutes ... 详细信息

关键词： traumatic injury damage

Decoding the nexus:branched-chain amino acids and their connection with sleep,circadian rhythms,and cardiometabolic health

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Neural Regeneration Research 2025年第5期20卷 1350-1363页

作者： Hui Li Laurent Seugnet Department of Neurology Xijing HospitalXi’anShaanxi ProvinceChina Centre de Recherche en Neurosciences de Lyon Integrated Physiology of the Brain Arousal Systems(WAKING)UniversitéClaude Bernard Lyon 1INSERM U1028CNRS UMR 5292BronFrance

The sleep-wake cycle stands as an integrative process essential for sustaining optimal brain function and,either directly or indirectly,overall body health,encompassing metabolic and cardiovascular *** the heightened metabolic activity of the brain,there exists a considerable demand for nutrients in comparison to other *** these,the branched-chain amino acids,comprising leucine,isoleucine,and valine,display distinctive significance,from their contribution to protein structure to their involvement in overall metabolism,especially in cerebral *** the first amino acids that are released into circulation post-food intake,branched-chain amino acids assume a pivotal role in the regulation of protein synthesis,modulating insulin secretion and the amino acid sensing pathway of target of ***-chain amino acids are key players in influencing the brain's uptake of monoamine precursors,competing for a shared *** their involvement in protein synthesis,these amino acids contribute to the metabolic cycles ofγ-aminobutyric acid and glutamate,as well as energy ***,they impact GABAergic neurons and the excitation/inhibition *** rhythmicity of branchedchain amino acids in plasma concentrations,observed over a 24-hour cycle and conserved in rodent models,is under circadian clock *** mechanisms underlying those rhythms and the physiological consequences of their disruption are not fully *** sleep,obesity,diabetes,and cardiovascular diseases can elevate branched-chain amino acid concentrations or modify their oscillatory *** mechanisms driving these effects are currently the focal point of ongoing research efforts,since normalizing branched-chain amino acid levels has the ability to alleviate the severity of these *** this context,the Drosophila model,though underutilized,holds promise in shedding new light on these *** findings indicate its po

关键词： branched-chain amino acids cardiovascular health circadian clock drosophila insulin metabolism sleep γ-aminobutyric acid

Combined evaluation of biomarkers as predictor of maintained remission in Crohn's disease

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World Journal of Gastroenterology 2019年第19期25卷 2354-2364页

作者： Elisa Sollelis Régine Minet Quinard Guillaume Bouguen Marion Goutte Félix Goutorbe Damien Bouvier Bruno Pereira Gilles Bommelaer Anthony Buisson inserm 3i HP CHU Clermont-Ferrand Service d’Hépato-Gastro Entérologie Université Clermont Auvergne inserm u1071 M2i SH USC-INRA 2018 Université Clermont Auvergne Biochemistry laboratory University Hospital G.Montpied CHu Rennes Univ Rennes INSERM CIC1414 Institut NUMECAN (Nutrition Metabolisms and Cancer) Gastroenterology Department Hospital of Bayonne Biostatistics unit DRCI University Hospital

BACKGROuND The individual performances and the complementarity of Crohn's disease(CD)activity index(CDAI), C-reactive protein(CRP) and faecal calprotectin(Fcal) to monitor patients with CD remain poorly inves-tigated in the era of "tight control"and "treat to target" *** To assess CDAI, CRP and Fcal variation, alone or combined, after 12 wk(W12) of anti-tumor necrosis factor(TNF) therapy to predict corticosteroids-free remission(CFREM = CDAI utic intensification and no surgery) at *** CD adult patients needing anti-TNF therapy with CDAI > 150 and either CRP >2.9 mg/L or Fcal > 250 μg/g were prospectively *** Among the 40 included patients, 13 patients(32.5%) achieved CFREM at W52. In univariable analysis, CDAI ue = 100.0%(100.0-100.0)and negative predictive value = 87.1%(75.3-98.9). In multivariable analysis, Fcal improvement at W12 [odd ratio(OR) = 45.1(2.96-687.9); P = 0.03] was a better predictor of CFREM at W52 than CDAI uSION The combined monitoring of CDAI, CRP and Fcal after anti-TNF induction therapy is able to predict favorable outcome within one year in patients with CD.

关键词： Biomarkers Crohn's disease Faecal calprotectin Crohn's disease activity index C-reactive protein Tight control Anti-tumor necrosis factor

Faecal calprotectin and magnetic resonance imaging in detecting Crohn's disease endoscopic postoperative recurrence

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World Journal of Gastroenterology 2018年第5期24卷 641-650页

作者： Pierre Baillet Guillaume Cadiot Marion Goutte Felix Goutorbe Hedia Brixi Christine Hoeffel Christophe Allimant Maud Reymond Hélène Obritin-Guilhen Benoit Magnin Gilles Bommelaer Bruno Pereira Constance Hordonneau Anthony Buisson université Clermont Auvergne CHU Clermont-Ferrand Service de radiologie CHu de Reims Service d’Hépato-Gastro Entérologie université Clermont Auvergne Inserm 3iHP CHU Clermont-Ferrand Service d’Hépato-Gastro Entérologie université Clermont Auvergne Inserm U1071 CH de Bayonne Service d’Hépato-Gastro Entérologie CHu de Reims Service de radiologie CHu Clermont-Ferrand DRCI Unité de Biostatistiques

AIM To assess magnetic resonance imaging(MRI) and faecal calprotectin to detect endoscopic postoperative recurrence in patients with Crohn's disease(CD).METHODS From two tertiary centers, all patients with CD who underwent ileocolonic resection were consecutively and prospectively included. All the patients underwent MRI and endoscopy within the first year after surgery or after the restoration of intestinal continuity [median = 6 mo(5.0-9.3)]. The stools were collected the day before the colonoscopy to evaluate faecal calprotectin level. Endoscopic postoperative recurrence(POR) was defined as Rutgeerts' index ≥ i2b. The MRI was analyzed independently by two radiologists blinded from clinical *** Apparent diffusion coefficient(ADC) was lower in patients with endoscopic POR compared to those with no recurrence(2.03 ± 0.32 vs 2.27 ± 0.38 × 10^(-3) mm^2/s, P = 0.032). Clermont score(10.4 ± 5.8 vs 7.4 ± 4.5, P = 0.038) and relative contrast enhancement(RCE)(129.4% ± 62.8% vs 76.4% ± 32.6%, P = 0.007) were significantly associated with endoscopic POR contrary to the magnetic resonance index of activity(Ma RIA)(7.3 ± 4.5 vs 4.8 ± 3.7; P = 0.15) and MR scoring system(P = 0.056). ADC ue(PPV) = 0.85, negative predictive value(NPV) = 0.65] and RCE > 100%(sensitivity = 0.75, specificity = 0.81, PPV = 0.75, NPV = 0.81) were the best cutoff values to identify endoscopic POR. Clermont score > 6.4(sensitivity = 0.61, specificity = 0.82, PPV = 0.73, NPV = 0.74), Ma RIA > 3.76(sensitivity = 0.61, specificity = 0.82, PPV = 0.73, NPV = 0.74) and a MR scoring system ≥ MR1(sensitivity = 0.54, specificity = 0.82, PPV = 0.70, and NPV = 0.70) demonstrated interesting performances to detect endoscopic POR. Faecal calprotectin values were significantly higher in patients with endoscopic POR(114 ± 54.5 μg/g vs 354.8 ± 432.5 μg/g; P = 0.0075). Faecal calprotectin > 100 μg/g demonstrated high perfor

关键词： Faecal calprotectin Magnetic resonance imaging Postoperative recurrence Crohn’s disease Clermont score Magnetic resonance index of activity

use of longitudinal magnetic resonance imaging in preclinical models of spinal cord injury

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Neural Regeneration Research 2019年第5期14卷 771-772页

作者： Harun Najib Noristani Florence Evelyne Perrin inserm u1198 University of Montpellier

Spinal cord injury(SCI)is a distressing event with grave socio/economic consequences to our *** response following SCI involves blood-spinal cord barrier breakdown,neuroinflammation and formation of a glial scar that altogether govern the feasibility of spontaneous axonal re-growth and limited functional *** advances in understanding SCI pathophysiology have been achieved using numerous transgenic mouse lines developed in different ***,there are inherent strain differences that affect inflammation,gliosis,axon regeneration and ultimately functional recovery after SCI.

关键词： Spinal cord injury(SCI) spinal cord injury

Anatomical and electrophysiological plasticity of locomotor networks following spinal transection in the salamander

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Neuroscience Bulletin 2013年第4期29卷 467-476页

作者： Jean-Marie Cabelguen Stéphanie Chevallier Ianina Amontieva-Potapova Céline Philippe Neurocentre Magendie INSERM U 862 - Bordeaux University

Recovery of locomotor behavior following spinal cord injury can occur spontaneously in some vertebrates, such as fish, urodele amphibians, and certain reptiles. This review provides an overview of the current status of our knowledge on the anatomical and electrophysiological changes occurring within the spinal cord that lead to, or are associated with the [e-expression of locomotion in spinally-transected salamanders. A better understanding of these processes will help to devise strategies for restoring locomotor function in mammals, including humans.

关键词： salamander spinal cord locomotor recovery regeneration

Transforming growth factor-β and fibrosis

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World Journal of Gastroenterology 2007年第22期13卷 3056-3062页

作者： Franck Verrecchia Alain Mauviel inserm u697 Paris 75010 France

Transforming growth factor-β （TGF-β）, a prototype of multifunctional cytokine, is a key regulator of extracellular matrix （ECM） assembly and remodeling. Specifically, TGF-β isoforms have the ability to induce the expression of ECM proteins in mesenchymal cells, and to stimulate the production of protease inhibitors that prevent enzymatic breakdown of the ECM. Elevated TGF-β expression in affected organs, and subsequent deregulation of TGF-β functions, correlates with the abnormal connective tissue deposition observed during the onset of fibrotic diseases. During the last few years, tremendous progress has been made in the understanding of the molecular aspects of intracellular signaling downstream of the TGF-β receptors. In particular, Smad proteins, TGF-β receptor kinase substrates that translocate into the cell nucleus to act as transcription factors, have been studied extensively. The role of Smad3 in the transcriptional regulation of type I collagen gene expression and in the development of fibrosis, demonstrated both/n vitro and in animal models with a targeted deletion of Smad3, is of critical importance because it may lead to novel therapeutic strategies against these diseases. This review focuses on the mechanisms underlying Smad modulation of fibrillar collagen expression and how it relates to fibrotic processes.

关键词： Collagen Connective tissue growth factor Fibrosis Smad Transforming growth factor-β

Hepatic arterial infusion of gemcitabine-oxaliplatin in a large metastasis from colon cancer

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World Journal of Gastroenterology 2010年第9期16卷 1150-1154页

作者： Boris Guiu Julie Vincent Séverine Guiu Sylvain Ladoire Pablo Ortega-Deballon Jean-Pierre Cercueil Bruno Chauffert Franois Ghiringhelli Department of Radiology INSERM U866University of BurgundyUniversity Hospital Department of Hepatology INSERM U866University of BurgundyUniversity Hospital Department of Oncology INSERM U866AVENIR TeamUniversity of Burgundy Department of Digestive Surgery INSERM U866University of BurgundyUniversity Hospital

Hepatic arterial infusion (HAI) of chemotherapy can be performed in cases of liver-confined metastatic disease,resulting in increased local drug *** we report the case of a 61-year-old man who presented with an isolated large unresectable liver metastasis of colon cancer after failure of surgery and multiple administration of systemic *** patient was treated with a combination of gemcitabine and oxaliplatin using *** tolerance was excellent and a radiological complete response was obtained after 8 cycles of *** rationale for the use of gemcitabine and oxaliplatin as well as that for the combination of the 2 drugs is discussed in this *** of gemcitabine-oxaliplatin should be evaluated in further clinical trials.

关键词： Hepatic artery Chemotherapy Colon cancer Liver metastasis Gemcitabine Oxaliplatin Contrast media Computed tomography