Your browser doesn't support javascript.
loading
Montrer: 20 | 50 | 100
Résultats 1 - 20 de 2.318
Filtrer
2.
Drug Des Devel Ther ; 18: 2555-2570, 2024.
Article de Anglais | MEDLINE | ID: mdl-38952487

RÉSUMÉ

Purpose: The aim of this review was to provide all the pharmacokinetic data for semaglutide in humans concerning its pharmacokinetics after subcutaneously and oral applications in healthy and diseased populations, to provide recommendations for clinical use. Methodology: The PubMed and Embase databases were searched to screen studies associated with the pharmacokinetics of semaglutide. The pharmacokinetic parameters included area under the curve plasma concentrations (AUC), maximal plasma concentration (Cmax), time to Cmax, half-life (t1/2), and clearance. The systematic literature search retrieved 17 articles including data on pharmacokinetic profiles after subcutaneously and oral applications of semaglutide, and at least one of the above pharmacokinetic parameter was reported in all included studies. Results: Semaglutide has a predictable pharmacokinetic profile with a long t1/2 that allows for once-weekly subcutaneous administration. The AUC and Cmax of both oral and subcutaneous semaglutide increased with dose. Food and various dosing conditions including water volume and dosing schedules can affect the oral semaglutide exposure. There are limited drug-drug interactions and no dosing adjustments in patients with upper gastrointestinal disease, renal impairment or hepatic impairment. Body weight may affect semaglutide exposure, but further studies are needed to confirm this. Conclusion: This review encompasses all the pharmacokinetic data for subcutaneous and oral semaglutide in both healthy and diseased participants. The existing pharmacokinetic data can assist in developing and evaluating pharmacokinetic models of semaglutide and will help clinicians predict semaglutide dosages. In addition, it can also help optimize future clinical trials.


Sujet(s)
Peptides glucagon-like , Peptides glucagon-like/pharmacocinétique , Peptides glucagon-like/administration et posologie , Humains , Administration par voie orale , Injections sous-cutanées , Hypoglycémiants/pharmacocinétique , Hypoglycémiants/administration et posologie , Interactions médicamenteuses
3.
J Biochem Mol Toxicol ; 38(7): e23764, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38963172

RÉSUMÉ

Obesity is an established risk factor for numerous malignancies, although it remains uncertain whether the disease itself or weight-loss drugs are responsible for a greater predisposition to cancer. The objective of the current study was to determine the impact of dulaglutide on genetic and epigenetic DNA damage caused by obesity, which is a crucial factor in the development of cancer. Mice were administered a low-fat or high-fat diet for 12 weeks, followed by a 5-week treatment with dulaglutide. Following that, modifications of the DNA bases were examined using the comet assay. To clarify the underlying molecular mechanisms, oxidized and methylated DNA bases, changes in the redox status, levels of inflammatory cytokines, and the expression levels of some DNA repair genes were evaluated. Animals fed a high-fat diet exhibited increased body weights, elevated DNA damage, oxidation of DNA bases, and DNA hypermethylation. In addition, obese mice showed altered inflammatory responses, redox imbalances, and repair gene expressions. The findings demonstrated that dulaglutide does not exhibit genotoxicity in the investigated conditions. Following dulaglutide administration, animals fed a high-fat diet demonstrated low DNA damage, less oxidation and methylation of DNA bases, restored redox balance, and improved inflammatory responses. In addition, dulaglutide treatment restored the upregulated DNMT1, Ogg1, and p53 gene expression. Overall, dulaglutide effectively maintains DNA integrity in obese animals. It reduces oxidative DNA damage and hypermethylation by restoring redox balance, modulating inflammatory responses, and recovering altered gene expressions. These findings demonstrate dulaglutide's expediency in treating obesity and its associated complications.


Sujet(s)
Altération de l'ADN , Méthylation de l'ADN , Réparation de l'ADN , Alimentation riche en graisse , Peptides glucagon-like , Fragments Fc des immunoglobulines , Oxydoréduction , Protéines de fusion recombinantes , Animaux , Peptides glucagon-like/analogues et dérivés , Peptides glucagon-like/pharmacologie , Méthylation de l'ADN/effets des médicaments et des substances chimiques , Fragments Fc des immunoglobulines/pharmacologie , Altération de l'ADN/effets des médicaments et des substances chimiques , Souris , Réparation de l'ADN/effets des médicaments et des substances chimiques , Alimentation riche en graisse/effets indésirables , Protéines de fusion recombinantes/pharmacologie , Mâle , Oxydoréduction/effets des médicaments et des substances chimiques , Inflammation/métabolisme , Inflammation/génétique , Stress oxydatif/effets des médicaments et des substances chimiques , Obésité/métabolisme , Obésité/traitement médicamenteux , Obésité/génétique , Régulation de l'expression des gènes/effets des médicaments et des substances chimiques , Souris de lignée C57BL
4.
J Med Econ ; 27(1): 866-879, 2024.
Article de Anglais | MEDLINE | ID: mdl-38963346

RÉSUMÉ

AIMS: To describe healthcare resource utilization (HCRU) and associated costs after initiation of injectable glucagon-like peptide-1 receptor agonist (GLP-1 RA) therapy by adult patients with type 2 diabetes (T2D) in the prospective, observational, 24-month TROPHIES study in France, Germany, and Italy. MATERIALS AND METHODS: HCRU data for cost calculations were collected by treating physicians during patient interviews at baseline and follow-up visits approximately 6, 12, 18, and 24 months after GLP-1 RA initiation with once-weekly dulaglutide or once-daily liraglutide. Costs were evaluated from the national healthcare system (third-party payer) perspective and updated to 2018 prices. RESULTS: In total, 2,005 patients were eligible for the HCRU analysis (1,014 dulaglutide; 991 liraglutide). Baseline patient characteristics were generally similar between treatment groups and countries. The largest proportions of patients using ≥2 oral glucose-lowering medications (GLMs) at baseline (42.9-43.4%) and month 24 (44.0-45.1%) and using another injectable GLM at month 24 (15.3-23.2%) were in France. Mean numbers of primary and secondary healthcare contacts during each assessment period were highest in France (range = 4.0-10.7) and Germany (range = 2.9-5.7), respectively. The greatest proportions (≥60%) of mean annualized costs per patient comprised medication costs. Mean annualized HCRU costs per patient varied by treatment cohort and country: the highest levels were in the liraglutide cohort in France (€909) and the dulaglutide cohort in Germany (€883). LIMITATIONS: Limitations included exclusion of patients using insulin at GLP-1 RA initiation and collection of HCRU data by physician, not via patient-completed diaries. CONCLUSIONS: Real-world HCRU and costs associated with the treatment of adults with T2D with two GLP-1 RAs in TROPHIES emphasize the need to avoid generalization with respect to HCRU and costs associated with a particular therapy when estimating the impact of a new treatment in a country-specific setting.


Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) have become frequent treatments of hyperglycemia in type-2 diabetes (T2D). Not all types of clinical study provide information about the cost of these treatments or the effects they might have on use of other medicines and equipment to control T2D or the need for visits to a doctor or nurse and different types of treatment in hospital. This study collected this information during the regular care of adults in France, Germany, or Italy who were prescribed either dulaglutide or liraglutide (both types of GLP-1 RAs) by their family doctor or a specialist in T2D. There were differences in costs and the need for other medicines and medical services between people using either dulaglutide or liraglutide and for people who were using the same GLP-1 RA in each of the three countries. The information from this study could be used to more accurately understand the overall costs and medical care needed when patients use dulaglutide or liraglutide in France, Germany, or Italy.


Sujet(s)
Diabète de type 2 , Peptides glucagon-like , Hypoglycémiants , Fragments Fc des immunoglobulines , Liraglutide , Protéines de fusion recombinantes , Humains , Diabète de type 2/traitement médicamenteux , Diabète de type 2/économie , Liraglutide/usage thérapeutique , Liraglutide/économie , Peptides glucagon-like/analogues et dérivés , Peptides glucagon-like/usage thérapeutique , Peptides glucagon-like/économie , Peptides glucagon-like/administration et posologie , Fragments Fc des immunoglobulines/usage thérapeutique , Fragments Fc des immunoglobulines/économie , Protéines de fusion recombinantes/économie , Protéines de fusion recombinantes/usage thérapeutique , Protéines de fusion recombinantes/administration et posologie , Mâle , Hypoglycémiants/usage thérapeutique , Hypoglycémiants/économie , Femelle , Études prospectives , Adulte d'âge moyen , Sujet âgé , Ressources en santé/statistiques et données numériques , Ressources en santé/économie , Modèles économétriques
5.
Front Endocrinol (Lausanne) ; 15: 1385463, 2024.
Article de Anglais | MEDLINE | ID: mdl-38974580

RÉSUMÉ

Melanocortin 4 receptor (MC4R) mutations are the commonest cause of monogenic obesity through dysregulation of neuronal pathways in the hypothalamus and prefrontal cortex that regulate hunger and satiety. MC4R also regulates neuropathic pain pathways via JNK signaling after nerve injury. We show evidence of corneal small fiber degeneration in 2 siblings carrying a heterozygous missense variant c.508A>G, p.Ille170Val in the MC4R gene. Both children were treated with once weekly semaglutide for 6 months with no change in weight, and only a minor improvement in HbA1c and lipid profile. However, there was evidence of nerve regeneration with an increase in corneal nerve fiber density (CNFD) [child A (13.9%), child B (14.7%)], corneal nerve branch density (CNBD) [child A (110.2%), child B (58.7%)] and corneal nerve fiber length (CNFL) [child A (21.5%), child B (44.0%)].


Sujet(s)
Régénération nerveuse , Récepteur de la mélanocortine de type 4 , Humains , Récepteur de la mélanocortine de type 4/génétique , Mâle , Femelle , Enfant , Régénération nerveuse/effets des médicaments et des substances chimiques , Peptides glucagon-like/usage thérapeutique , Peptides glucagon-like/pharmacologie , Neurofibres/effets des médicaments et des substances chimiques , Neurofibres/anatomopathologie , Mutation , Obésité/traitement médicamenteux , Obésité/génétique , Cornée/effets des médicaments et des substances chimiques , Cornée/innervation , Cornée/anatomopathologie , Obésité pédiatrique/traitement médicamenteux , Adolescent
6.
BMJ Open ; 14(6): e084190, 2024 Jun 21.
Article de Anglais | MEDLINE | ID: mdl-38908837

RÉSUMÉ

INTRODUCTION: Semaglutide is increasingly used for the treatment of type 2 diabetes mellitus, overweight and other conditions. It is well known that semaglutide lowers blood glucose levels and leads to significant weight loss. Still, a systematic review has yet to investigate the adverse effects with semaglutide for all patient groups. METHODS AND ANALYSIS: We will conduct a systematic review and search major medical databases (Cochrane Central Register of Controlled Trials, Medline, Embase, Latin American and Caribbean Health Sciences Literature, Science Citation Index Expanded, Conference Proceedings Citation Index-Science) and clinical trial registries from their inception and onwards to identify relevant randomised clinical trials. We expect to conduct the literature search in July 2024. Two review authors will independently extract data and perform risk-of-bias assessments. We will include randomised clinical trials comparing oral or subcutaneous semaglutide versus placebo. Primary outcomes will be all-cause mortality and serious adverse events. Secondary outcomes will be myocardial infarction, stroke, all-cause hospitalisation and non-serious adverse events. Data will be synthesised by meta-analyses and trial sequential analysis; risk of bias will be assessed with Cochrane Risk of Bias tool-version 2, an eight-step procedure will be used to assess if the thresholds for statistical and clinical significance are crossed, and the certainty of the evidence will be assessed by Grading of Recommendations, Assessment, Development and Evaluations. ETHICS AND DISSEMINATION: This protocol does not present any results. Findings of this systematic review will be published in international peer-reviewed scientific journals. PROSPERO REGISTRATION NUMBER: CRD42024499511.


Sujet(s)
Diabète de type 2 , Peptides glucagon-like , Hypoglycémiants , Méta-analyse comme sujet , Revues systématiques comme sujet , Humains , Peptides glucagon-like/usage thérapeutique , Peptides glucagon-like/effets indésirables , Hypoglycémiants/usage thérapeutique , Hypoglycémiants/effets indésirables , Diabète de type 2/traitement médicamenteux , Plan de recherche , Essais contrôlés randomisés comme sujet
7.
Article de Anglais | MEDLINE | ID: mdl-38880054

RÉSUMÉ

The use of semaglutide, also known by its trade name Ozempic®, has been increasing worldwide in recent years due to its benefits in treating type II diabetes. Thanks to its effects on appetite regulation, in many countries it is also used to treat obesity. However, due to its promotion by social media and celebrities as a weight-loss treatment, semaglutide is misused by a non-diabetic and non-obese population and by a young public, which is the main target of these media. Following the alert by the ANSM (Agence nationale de sécurité du médicament) in France and the FDA (Food and Drug Administration) in the United States, which imposed the addition of fatal effects to the list of side effects, the misuse of semaglutide seems to be becoming a public health problem. For this reason, it seems important that a toxicology laboratory has the capacity to test for semaglutide in blood. In this study, the authors have developed and validated a method for the identification and quantification of semaglutide in whole blood using a LC-HRMS. After the addition of the internal standard (bovine insulin), the blood was subjected to protein precipitation using a mix of acetonitrile/methanol (70:30,v:v). The validation procedure demonstrated an acceptable linearity between 2 and 500 ng/mL. LOD and LOQ were 1 and 2 ng/mL, respectively. Intra and inter-day precision were below 20 % at three concentrations. The method was successfully applied to the blood samples of 3 diabetic patients under treatment of semaglutide. The samples tested positive with concentrations ranging from 31 to 70 ng/mL which fall within the limits of therapeutic blood concentrations described in the literature.


Sujet(s)
Peptides glucagon-like , Peptides glucagon-like/sang , Humains , Reproductibilité des résultats , Chromatographie en phase liquide/méthodes , Spectrométrie de masse/méthodes , Modèles linéaires , Limite de détection
8.
Expert Rev Cardiovasc Ther ; 22(6): 217-230, 2024 Jun.
Article de Anglais | MEDLINE | ID: mdl-38864827

RÉSUMÉ

INTRODUCTION: Heart failure with preserved ejection fraction (HFpEF) is a highly heterogeneous syndrome, making it challenging to improve prognosis with pharmacotherapy. Obesity is one of the leading phenotypes of HFpEF, and its prevalence continues to grow worldwide. Consequently, obesity-targeted interventions have attracted attention as a novel treatment strategy for HFpEF. AREAS COVERED: The authors review the association between the pathogenesis of obesity and HFpEF and the potential for obesity-targeted pharmacotherapeutic strategies in HFpEF, together with the latest evidence. The literature search was conducted in PubMed up to April 2024. EXPERT OPINION: The STEP HFpEF (Semaglutide Treatment Effect in People with obesity and HFpEF) and SELECT (Semaglutide Effects on Cardiovascular Outcomes in People with Overweight or Obesity) trials recently demonstrated that the glucagon-like peptide 1 analogue, semaglutide, improves various aspects of clinical outcomes in obese HFpEF patients and significantly reduces cardiovascular and heart failure events in non-diabetic obese patients, along with a substantial weight loss. Future clinical trials with other incretin mimetics with more potent weight loss and sub-analyses of the SELECT trial may further emphasize the importance of the obesity phenotype-based approach in the treatment of HFpEF.


Sujet(s)
Défaillance cardiaque , Obésité , Débit systolique , Perte de poids , Humains , Défaillance cardiaque/traitement médicamenteux , Défaillance cardiaque/physiopathologie , Obésité/complications , Obésité/traitement médicamenteux , Débit systolique/effets des médicaments et des substances chimiques , Perte de poids/effets des médicaments et des substances chimiques , Agents antiobésité/usage thérapeutique , Agents antiobésité/pharmacologie , Pronostic , Animaux , Peptides glucagon-like
9.
Front Endocrinol (Lausanne) ; 15: 1386542, 2024.
Article de Anglais | MEDLINE | ID: mdl-38894744

RÉSUMÉ

Background: Glucagon-like peptide-1 receptor-agonists (GLP-1ra), such as semaglutide, have emerged as promising treatments, demonstrating sustained weight reduction and metabolic benefits. This study aims to assess the impact of oral and subcutaneous semaglutide on body composition and metabolic parameters in patients with T2DM and obesity. Methods: A 24-week quasi-experimental retrospective study including adults with T2DM and obesity (BMI ≥ 30 kg/m²) who were treated with either daily-oral or weekly-subcutaneous semaglutide. Body composition was measured using bioelectrical impedance analysis, evaluating fat mass, fat-free mass, total body water, skeletal muscle mass, and whole-body phase angle. Analytical parameters included lipid profile and glycaemic control. Statistical analyses were performed using SPSS v.26. Results: Participants (n=88) experienced significant weight loss after treatment with semaglutide (9.5% in subcutaneous, 9.4% in oral, P<0.001). Weight reduction primarily resulted from fat mass reduction without substantial lean mass compromise. Visceral fat area decreased, whiles phase-angle remained stable. Improvements in lipid profiles and glycaemic control were observed, with a decrease in both HbA1c and insulin requirements. Multivariate analysis demonstrated comparable impacts of oral and subcutaneous semaglutide on body composition. Conclusion: Semaglutide, administered orally or subcutaneously, demonstrated positive effects on body composition, metabolic and glycaemic control in patients with T2DM and obesity. This real-world study highlights the potential of bioelectrical impedance analysis in assessing antidiabetic drugs' impact on body composition, providing valuable insights for future research and clinical applications.


Sujet(s)
Composition corporelle , Diabète de type 2 , Peptides glucagon-like , Hypoglycémiants , Obésité , Humains , Peptides glucagon-like/usage thérapeutique , Peptides glucagon-like/administration et posologie , Diabète de type 2/traitement médicamenteux , Composition corporelle/effets des médicaments et des substances chimiques , Mâle , Femelle , Adulte d'âge moyen , Études rétrospectives , Obésité/traitement médicamenteux , Adulte , Hypoglycémiants/usage thérapeutique , Sujet âgé , Perte de poids/effets des médicaments et des substances chimiques , Glycémie/effets des médicaments et des substances chimiques , Glycémie/métabolisme
10.
Medicine (Baltimore) ; 103(23): e38444, 2024 Jun 07.
Article de Anglais | MEDLINE | ID: mdl-38847728

RÉSUMÉ

To investigate changes in skeletal muscle mass and fat fraction in patients with metabolic dysfunction-associated steatotic liver disease (MASLD) and type 2 diabetes mellitus (T2DM) undergoing treatment with Semaglutide for 6months. This single-arm pilot study included 21 patients with MASLD who received semaglutide for T2DM. Body weight, metabolic parameters, liver enzymes, fibrosis markers, skeletal muscle index (cm2/m2), and fat fraction (%) at the L3 level using the two-point Dixon method on magnetic resonance imaging (MRI), as well as liver steatosis and liver stiffness assessed using MRI-based proton density fat fraction (MRI-PDFF) and MR elastography, respectively, were prospectively examined before and 6 months after semaglutide administration. The mean age of the patients was 53 years and 47.6% were females. The median liver steatosis-fraction (%) and skeletal muscle steatosis-fraction values (%) significantly decreased (22.0 vs 12.0; P = .0014) and (12.8 vs 9.9; P = .0416) at baseline and 6 months, respectively, while maintaining muscle mass during treatment. Semaglutide also dramatically reduced hemoglobin A1c (%) (6.8 vs 5.8, P = .0003), AST (IU/L) (54 vs 26, P < .0001), ALT (IU/L) (80 vs 34, P = .0004), and γ-GTP (IU/L) levels (64 vs 34, P = .0007). Although not statistically significant, Body weight (kg) (79.9 vs 77.4), body mass index (BMI) (kg/m2) (28.9 vs 27.6), and liver stiffness (kPa) (28.9 vs 27.6) showed a decreasing trend. Fibrosis markers such as M2BPGi, type IV collagen, and skeletal muscle area did not differ. Semaglutide demonstrated favorable effects on liver and skeletal muscle steatosis, promoting improved liver function and diabetic status.


Sujet(s)
Diabète de type 2 , Peptides glucagon-like , Foie , Muscles squelettiques , Humains , Femelle , Adulte d'âge moyen , Mâle , Diabète de type 2/traitement médicamenteux , Études prospectives , Muscles squelettiques/effets des médicaments et des substances chimiques , Peptides glucagon-like/usage thérapeutique , Peptides glucagon-like/administration et posologie , Projets pilotes , Foie/effets des médicaments et des substances chimiques , Foie/imagerie diagnostique , Foie/anatomopathologie , Hypoglycémiants/usage thérapeutique , Stéatose hépatique/traitement médicamenteux , Adulte , Récepteur du peptide-1 similaire au glucagon/agonistes , Imagerie par résonance magnétique , Imagerie d'élasticité tissulaire , Hémoglobine glyquée/effets des médicaments et des substances chimiques , Hémoglobine glyquée/analyse , Sujet âgé
12.
Nat Commun ; 15(1): 4757, 2024 Jun 04.
Article de Anglais | MEDLINE | ID: mdl-38834564

RÉSUMÉ

Semaglutide, a glucagon-like peptide-1 receptor agonist, is clinically used as a glucose-lowering and weight loss medication due to its effects on energy metabolism. In heart failure, energy production is impaired due to altered mitochondrial function and increased glycolysis. However, the impact of semaglutide on cardiomyocyte metabolism under pressure overload remains unclear. Here we demonstrate that semaglutide improves cardiac function and reduces hypertrophy and fibrosis in a mouse model of pressure overload-induced heart failure. Semaglutide preserves mitochondrial structure and function under chronic stress. Metabolomics reveals that semaglutide reduces mitochondrial damage, lipid accumulation, and ATP deficiency by promoting pyruvate entry into the tricarboxylic acid cycle and increasing fatty acid oxidation. Transcriptional analysis shows that semaglutide regulates myocardial energy metabolism through the Creb5/NR4a1 axis in the PI3K/AKT pathway, reducing NR4a1 expression and its translocation to mitochondria. NR4a1 knockdown ameliorates mitochondrial dysfunction and abnormal glucose and lipid metabolism in the heart. These findings suggest that semaglutide may be a therapeutic agent for improving cardiac remodeling by modulating energy metabolism.


Sujet(s)
Métabolisme énergétique , Peptides glucagon-like , Membre-1 du groupe A de la sous-famille-4 de récepteurs nucléaires , Animaux , Mâle , Membre-1 du groupe A de la sous-famille-4 de récepteurs nucléaires/métabolisme , Membre-1 du groupe A de la sous-famille-4 de récepteurs nucléaires/génétique , Métabolisme énergétique/effets des médicaments et des substances chimiques , Souris , Peptides glucagon-like/pharmacologie , Peptides glucagon-like/usage thérapeutique , Défaillance cardiaque/traitement médicamenteux , Défaillance cardiaque/métabolisme , Souris de lignée C57BL , Remodelage ventriculaire/effets des médicaments et des substances chimiques , Métabolisme lipidique/effets des médicaments et des substances chimiques , Myocytes cardiaques/effets des médicaments et des substances chimiques , Myocytes cardiaques/métabolisme , Protéine de liaison à l'élément de réponse à l'AMP cyclique/métabolisme , Modèles animaux de maladie humaine , Myocarde/métabolisme , Myocarde/anatomopathologie , Transduction du signal/effets des médicaments et des substances chimiques , Mitochondries/métabolisme , Mitochondries/effets des médicaments et des substances chimiques , Cardiomégalie/traitement médicamenteux , Cardiomégalie/métabolisme
13.
BMJ Open ; 14(6): e081401, 2024 Jun 21.
Article de Anglais | MEDLINE | ID: mdl-38908839

RÉSUMÉ

INTRODUCTION: Glucagon-like peptide-1 receptor agonists (GLP-1 RAs), currently marketed for type 2 diabetes and obesity, may offer novel mechanisms to delay or prevent neurotoxicity associated with Alzheimer's disease (AD). The impact of semaglutide in amyloid positivity (ISAP) trial is investigating whether the GLP-1 RA semaglutide reduces accumulation in the brain of cortical tau protein and neuroinflammation in individuals with preclinical/prodromal AD. METHODS AND ANALYSIS: ISAP is an investigator-led, randomised, double-blind, superiority trial of oral semaglutide compared with placebo. Up to 88 individuals aged ≥55 years with brain amyloid positivity as assessed by positron emission tomography (PET) or cerebrospinal fluid, and no or mild cognitive impairment, will be randomised. People with the low-affinity binding variant of the rs6971 allele of the Translocator Protein 18 kDa (TSPO) gene, which can interfere with interpreting TSPO PET scans (a measure of neuroinflammation), will be excluded.At baseline, participants undergo tau, TSPO PET and MRI scanning, and provide data on physical activity and cognition. Eligible individuals are randomised in a 1:1 ratio to once-daily oral semaglutide or placebo, starting at 3 mg and up-titrating to 14 mg over 8 weeks. They will attend safety visits and provide blood samples to measure AD biomarkers at weeks 4, 8, 26 and 39. All cognitive assessments are repeated at week 26. The last study visit will be at week 52, when all baseline measurements will be repeated. The primary end point is the 1-year change in tau PET signal. ETHICS AND DISSEMINATION: The study was approved by the West Midlands-Edgbaston Research Ethics Committee (22/WM/0013). The results of the study will be disseminated through scientific presentations and peer-reviewed publications. TRIAL REGISTRATION NUMBER: ISRCTN71283871.


Sujet(s)
Maladie d'Alzheimer , Peptides glucagon-like , Tomographie par émission de positons , Humains , Peptides glucagon-like/administration et posologie , Peptides glucagon-like/usage thérapeutique , Méthode en double aveugle , Maladie d'Alzheimer/traitement médicamenteux , Tomographie par émission de positons/méthodes , Royaume-Uni , Administration par voie orale , Mâle , Adulte d'âge moyen , Femelle , Protéines tau , Sujet âgé , Encéphale/imagerie diagnostique , Encéphale/métabolisme , Encéphale/effets des médicaments et des substances chimiques , Essais contrôlés randomisés comme sujet
14.
Int J Mol Sci ; 25(11)2024 Jun 04.
Article de Anglais | MEDLINE | ID: mdl-38892384

RÉSUMÉ

The purpose of this study was to explore the effect of Semaglutide on intrauterine adhesions and discover new drugs for such adhesions. In this study, the cell model was simulated by TGF-ß1-induced human endometrial epithelial cells, and the animal model was established through mechanical curettage and inflammatory stimulation. After co-culturing with TGF-ß1 with or without different concentrations of Semaglutide for 48 h, cells were collected for RT-qPCR and Western blotting analyses. Three doses were subcutaneously injected into experimental mice once a day for two weeks, while the control group received sterile ddH2O. The serum and uterine tissues of the mice were collected. HE and Masson staining were used for the uterine histomorphological and pathological analyses. RT-qPCR and Western blotting were used for mRNA and protein expression analyses. Serum indicators were detected using ELISA kits. The results showed that Semaglutide significantly reduced the mRNA levels of fibrosis indicators ACTA2, COL1A1, and FN and inflammatory indicators TNF-α, IL-6, and NF-κB in the two models. Semaglutide improved endometrium morphology, increased the number of endometrial glands, and reduced collagen deposition in IUA mice. The results also showed that Semaglutide could inhibit vimentin, E-Cadherin, and N-Cadherin in the two models. In summary, Semaglutide can ameliorate fibrosis and inflammation of intrauterine adhesions as well as inhibit epithelial-mesenchymal transition in IUA models.


Sujet(s)
Modèles animaux de maladie humaine , Transition épithélio-mésenchymateuse , Fibrose , Peptides glucagon-like , Animaux , Femelle , Transition épithélio-mésenchymateuse/effets des médicaments et des substances chimiques , Adhérences tissulaires/traitement médicamenteux , Adhérences tissulaires/métabolisme , Adhérences tissulaires/anatomopathologie , Adhérences tissulaires/prévention et contrôle , Souris , Peptides glucagon-like/pharmacologie , Humains , Endomètre/effets des médicaments et des substances chimiques , Endomètre/anatomopathologie , Endomètre/métabolisme , Facteur de croissance transformant bêta-1/métabolisme , Facteur de croissance transformant bêta-1/génétique , Utérus/effets des médicaments et des substances chimiques , Utérus/anatomopathologie , Utérus/métabolisme
15.
Obesity (Silver Spring) ; 32(7): 1268-1280, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38932728

RÉSUMÉ

OBJECTIVE: The objective of this study was to evaluate the efficacy and safety of semaglutide 2.4 mg, a glucagon-like peptide-1 receptor agonist, by race and ethnicity, across three phase 3 trials. METHODS: The Semaglutide Treatment Effect in People with Obesity (STEP) clinical trials evaluated the efficacy and safety of once-weekly subcutaneous semaglutide 2.4 mg. Here, STEP 1 and 3 data were pooled for analysis; STEP 2 data were examined separately. All analyses were conducted using data from racial and ethnic subgroups. The primary outcome was the estimated treatment difference in percent body weight change for semaglutide 2.4 mg versus placebo. RESULTS: Participants reported race as White (STEP 1 and 3, 75.3%; STEP 2, 59.4%), Black (8.8%; 8.9%), Asian (10.6%; 27.3%), or other racial group (5.3%; 4.4%); and ethnicity as Hispanic or Latino (13.9%; 11.9%) or not Hispanic or Latino (83.9%; 88.1%). There were no significant interactions between treatment effect and race (STEP 1 and 3: p ≥ 0.07; STEP 2: p ≥ 0.15) or ethnicity (p ≥ 0.40; p ≥ 0.85). The safety of semaglutide 2.4 mg was consistent across subgroups. CONCLUSIONS: The treatment effect of semaglutide was statistically significant versus placebo and clinically relevant across all racial and ethnic subgroups in STEP 1 and 3 and STEP 2. All subgroups across both samples demonstrated good tolerability.


Sujet(s)
Peptides glucagon-like , Obésité , Humains , Peptides glucagon-like/administration et posologie , Peptides glucagon-like/effets indésirables , Peptides glucagon-like/usage thérapeutique , Mâle , Femelle , Adulte , Adulte d'âge moyen , Obésité/traitement médicamenteux , Obésité/ethnologie , Résultat thérapeutique , Perte de poids/effets des médicaments et des substances chimiques , Injections sous-cutanées , Méthode en double aveugle , Récepteur du peptide-1 similaire au glucagon/agonistes , , Hispanique ou Latino/statistiques et données numériques , Agents antiobésité/effets indésirables , Agents antiobésité/usage thérapeutique , Agents antiobésité/administration et posologie , Ethnies , Hypoglycémiants/usage thérapeutique , Hypoglycémiants/administration et posologie , Hypoglycémiants/effets indésirables
16.
Medicina (Kaunas) ; 60(6)2024 May 30.
Article de Anglais | MEDLINE | ID: mdl-38929525

RÉSUMÉ

Background and Objectives: The rise in global diabetes cases, reaching a staggering 529 million in 2021 from 108 million in 1980, underscores the urgency of addressing its complications, notably macrovascular ones like coronary artery, cerebrovascular, and peripheral artery diseases, which contribute to over 50% of diabetes mortality. Atherosclerosis, linked to hyperglycemia-induced endothelial dysfunction, is pivotal in cardiovascular disease development. Cytokines, including pentraxin 3 (PTX3), copeptin, lipoprotein(a) [Lp(a)], and matrix metalloproteinase-9 (MMP-9), influence atherosclerosis progression and plaque vulnerability. Inhibiting atherosclerosis progression is crucial, especially in diabetic individuals. Glucagon-like peptide 1 receptor agonists (GLP-1 RAs), increasingly used for type 2 diabetes, show promise in reducing the cardiovascular risk, sparking interest in their effects on atherogenesis. This study sought to examine the effects of glucagon-like peptide-1 receptor agonists (GLP-1 RAs) on biomarkers that indicate the instability of atherosclerotic plaques. These biomarkers include pentraxin 3 (PTX3), copeptin (CPC), matrix metalloproteinase-9 (MMP-9), and lipoprotein(a) [Lp(a)]. Materials and Methods: A total of 34 participants, ranging in age from 41 to 81 years (with an average age of 61), who had been diagnosed with type 2 diabetes mellitus (with a median HbA1c level of 8.8%), dyslipidemia, and verified atherosclerosis using B-mode ultrasonography, were included in the study. All subjects were eligible to initiate treatment with a GLP-1 RA-dulaglutide. Results: Significant reductions in anthropometric parameters, blood pressure, fasting glucose levels, and HbA1c levels were observed posttreatment. Moreover, a notable decrease in biochemical markers associated with atherosclerotic plaque instability, particularly PTX3 and MMP-9 (p < 0.001), as well as Lp(a) (p < 0.05), was evident following the GLP-1 RA intervention. Conclusions: These findings underscore the potential of GLP-1 RAs in mitigating atherosclerosis progression and plaque vulnerability, thus enhancing cardiovascular outcomes in individuals with type 2 diabetes mellitus.


Sujet(s)
Marqueurs biologiques , Protéine C-réactive , Cytokines , Diabète de type 2 , Peptides glucagon-like , Hypoglycémiants , Matrix metalloproteinase 9 , Plaque d'athérosclérose , Protéines de fusion recombinantes , Composant sérique amyloïde P , Humains , Projets pilotes , Marqueurs biologiques/sang , Adulte d'âge moyen , Mâle , Diabète de type 2/complications , Diabète de type 2/traitement médicamenteux , Diabète de type 2/sang , Femelle , Plaque d'athérosclérose/sang , Plaque d'athérosclérose/traitement médicamenteux , Protéine C-réactive/analyse , Composant sérique amyloïde P/analyse , Peptides glucagon-like/analogues et dérivés , Peptides glucagon-like/usage thérapeutique , Peptides glucagon-like/pharmacologie , Matrix metalloproteinase 9/sang , Sujet âgé , Cytokines/sang , Hypoglycémiants/usage thérapeutique , Hypoglycémiants/pharmacologie , Protéines de fusion recombinantes/usage thérapeutique , Athérosclérose/sang , Athérosclérose/traitement médicamenteux , Lipoprotéine (a)/sang , Glycopeptides , Fragments Fc des immunoglobulines
17.
Biomed Pharmacother ; 176: 116888, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38861859

RÉSUMÉ

OBJECTIVES: Co-agonists at the glucagon-like peptide-1 and glucagon receptors (GLP1R/GCGR) show promise as treatments for metabolic dysfunction-associated steatotic liver disease (MASLD). Although most co-agonists to date have been heavily GLP1R-biased, glucagon directly acts on the liver to reduce fat content. The aims of this study were to investigate a GCGR-biased co-agonist as treatment for hepatic steatosis in mice. METHODS: Mice with diet-induced obesity (DIO) were treated with Dicretin, a GLP1/GCGR co-agonist with high potency at the GCGR, Semaglutide (GLP1R monoagonist) or food restriction over 24 days, such that their weight loss was matched. Hepatic steatosis, glucose tolerance, hepatic transcriptomics, metabolomics and lipidomics at the end of the study were compared with Vehicle-treated mice. RESULTS: Dicretin lead to superior reduction of hepatic lipid content when compared to Semaglutide or equivalent weight loss by calorie restriction. Markers of glucose tolerance and insulin resistance improved in all treatment groups. Hepatic transcriptomic and metabolomic profiling demonstrated many changes that were unique to Dicretin-treated mice. These include some known targets of glucagon signaling and others with as yet unclear physiological significance. CONCLUSIONS: Our study supports the development of GCGR-biased GLP1/GCGR co-agonists for treatment of MASLD and related conditions.


Sujet(s)
Stéatose hépatique , Glucagon-like peptide 1 , Souris de lignée C57BL , Obésité , Récepteurs au glucagon , Perte de poids , Animaux , Obésité/traitement médicamenteux , Obésité/métabolisme , Perte de poids/effets des médicaments et des substances chimiques , Récepteurs au glucagon/agonistes , Récepteurs au glucagon/métabolisme , Mâle , Stéatose hépatique/traitement médicamenteux , Stéatose hépatique/métabolisme , Souris , Glucagon-like peptide 1/métabolisme , Alimentation riche en graisse/effets indésirables , Foie/métabolisme , Foie/effets des médicaments et des substances chimiques , Récepteur du peptide-1 similaire au glucagon/agonistes , Récepteur du peptide-1 similaire au glucagon/métabolisme , Insulinorésistance , Peptides glucagon-like/pharmacologie
18.
Obes Surg ; 34(7): 2369-2374, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38753265

RÉSUMÉ

PURPOSE: Glucagon-like receptor agonists (GLP1-RAs) have raised peri-procedural concerns due to their potential to delay gastric emptying. The American Association of Anesthesiologists has advised pausing a single dose before elective endoscopy. However, a subsequent directive from multiple gastroenterology societies underscored the need for further assessment to substantiate this practice. We aimed to evaluate the frequency of serious adverse events and retained gastric products during endoscopic sleeve gastroplasty (ESG) with uninterrupted GLP1-RA use. MATERIALS AND METHODS: We conducted a retrospective evaluation of all patients undergoing ESG while on GLP1-RAs at three centers from August 2022 to February 2024. Per standard protocol, all patients had refrained from solid foods for at least 24 h and maintained nil per os for 12 h preceding their ESG. Records were reviewed for patient characteristics and medication type and doses. Primary outcomes included serious adverse events and retained gastric products based on patient records, procedure reports, and procedural videos. RESULTS: Fifty-seven consecutive adults (89.5% women, mean age of 44 ± 9 years, mean BMI of 40.1 ± 8.1 kg/m2, 35.1% with T2DM, and 26.3% with pre-T2DM) underwent ESG without stopping GLP1-RAs, which included semaglutide (45.6%), liraglutide (19.3%), dulaglutide (22.8%), and tirzepatide (12.3%). During intubation, endoscopy, and recovery, there were no instances of retained gastric solids, pulmonary aspiration, gastroesophageal regurgitation, or hypoxia. CONCLUSION: A ≥ 24-h pre-endoscopy liquid-only diet with ≥ 12-h pre-endoscopy fast may negate the need for GLP1-RA interruption for routine upper endoscopy in adults with native gastric anatomy.


Sujet(s)
Gastroplastie , Récepteur du peptide-1 similaire au glucagon , Peptides glucagon-like , Humains , Femelle , Mâle , Études rétrospectives , Adulte , Gastroplastie/méthodes , Récepteur du peptide-1 similaire au glucagon/agonistes , Adulte d'âge moyen , Peptides glucagon-like/usage thérapeutique , Peptides glucagon-like/administration et posologie , Peptides glucagon-like/analogues et dérivés , Obésité morbide/chirurgie , Vidange gastrique/effets des médicaments et des substances chimiques , Hypoglycémiants/usage thérapeutique , Liraglutide/usage thérapeutique , Fragments Fc des immunoglobulines , Protéines de fusion recombinantes
19.
J Am Coll Cardiol ; 84(1): 27-40, 2024 Jul 02.
Article de Anglais | MEDLINE | ID: mdl-38819334

RÉSUMÉ

BACKGROUND: The glucagon-like peptide-1 receptor agonist, semaglutide, improved health status and reduced body weight in patients with obesity-related heart failure (HF) with preserved ejection fraction (HFpEF) in the STEP-HFpEF (Semaglutide Treatment Effect in People with Obesity and HFpEF) program. Whether benefits were due to mechanical unloading or effects on HF pathobiology is uncertain. OBJECTIVES: This study sought to determine if semaglutide 2.4 mg reduced N-terminal pro-B-type natriuretic peptide (NT-proBNP) in patients with obesity-related HFpEF and compare treatment responses by baseline NT-proBNP. METHODS: This was a prespecified secondary analysis of pooled data from 2 double-blind, placebo-controlled, randomized trials (STEP-HFpEF [Research Study to Investigate How Well Semaglutide Works in People Living With Heart Failure and Obesity] and STEP-HFpEF DM [Research Study to Look at How Well Semaglutide Works in People Living With Heart Failure, Obesity and Type 2 Diabetes]) testing effects of semaglutide in patients with obesity-related HFpEF. The main outcomes were change in NT-proBNP at 52 weeks and change in the dual primary endpoints of Kansas City Cardiomyopathy Questionnaire Clinical Summary Score and body weight by baseline NT-proBNP. RESULTS: In total, 1,145 patients were randomized. Semaglutide compared with placebo reduced NT-proBNP at 52 weeks (estimated treatment ratio: 0.82; 95% CI: 0.74-0.91; P = 0.0002). Improvements in health status were more pronounced in those with higher vs lower baseline NT-proBNP (estimated difference: tertile 1: 4.5 points, 95% CI: 0.8-8.2; tertile 2: 6.2 points, 95% CI: 2.4-10.0; tertile 3: 11.9 points, 95% CI: 8.1-15.7; P interaction = 0.02; baseline NT-proBNP as a continuous variable: P interaction = 0.004). Reductions in body weight were consistent across baseline NT-proBNP levels (P interaction = 0.21). CONCLUSIONS: In patients with obesity-related HFpEF, semaglutide reduced NT-proBNP. Participants with higher baseline NT-proBNP had a similar degree of weight loss but experienced larger reductions in HF-related symptoms and physical limitations with semaglutide than those with lower NT-proBNP.


Sujet(s)
Peptides glucagon-like , Défaillance cardiaque , Peptide natriurétique cérébral , Obésité , Fragments peptidiques , Débit systolique , Humains , Peptide natriurétique cérébral/sang , Défaillance cardiaque/traitement médicamenteux , Défaillance cardiaque/sang , Défaillance cardiaque/physiopathologie , Fragments peptidiques/sang , Peptides glucagon-like/usage thérapeutique , Mâle , Femelle , Méthode en double aveugle , Sujet âgé , Obésité/sang , Obésité/complications , Obésité/traitement médicamenteux , Débit systolique/effets des médicaments et des substances chimiques , Débit systolique/physiologie , Adulte d'âge moyen , Résultat thérapeutique
20.
Obesity (Silver Spring) ; 32(7): 1401-1409, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38706431

RÉSUMÉ

OBJECTIVE: Obesity and its cardiovascular complications are major causes of morbidity and mortality. Little is known in real-world settings about the effect of newly approved antiobesity medications (AOMs) on cardiovascular complications among patients with obesity. METHODS: This retrospective cohort study examined the association between newly approved AOM use and cardiovascular events among Medicare patients with obesity using data from 2020 to 2022. Patient age, gender, comorbidity scores, socioeconomic status, and baseline cardiovascular comorbidities were compared descriptively. Subgroup analysis compared variables by medication type. Relative risk and absolute risk of cardiovascular disease (CVD) events were estimated using Cox and Aalen regression models. RESULTS: The analysis included 5926 patients treated with semaglutide and tirzepatide, including Ozempic (5404 patients), Wegovy (375 patients), or Mounjaro (147 patients). Hypertension, type 2 diabetes, and hyperlipidemia were the most common comorbidities. For patients with AOMs, less incidence of heart failure (4.89% vs. 6.13%, p < 0.0001), atrial fibrillation (3.83% vs. 5.17%, p < 0.0001), arrhythmia (3.59% vs. 4.14%, p < 0.0153), and peripheral vascular disease (3.44% vs. 2.94%, p < 0.0395) was found versus patients without AOMs. Patients receiving AOMs showed an 8% risk reduction in any CVD. Protective effect on CVD was apparent over the first 375 days. CONCLUSIONS: Results suggest that utilization of AOMs effectively alleviates the high prevalence of CVD.


Sujet(s)
Agents antiobésité , Maladies cardiovasculaires , Obésité , Humains , Mâle , Femelle , Études rétrospectives , Maladies cardiovasculaires/épidémiologie , Maladies cardiovasculaires/étiologie , Maladies cardiovasculaires/prévention et contrôle , Sujet âgé , Obésité/complications , Obésité/épidémiologie , Agents antiobésité/usage thérapeutique , Agents antiobésité/effets indésirables , États-Unis/épidémiologie , Comorbidité , Diabète de type 2/complications , Diabète de type 2/traitement médicamenteux , Diabète de type 2/épidémiologie , Sujet âgé de 80 ans ou plus , Medicare (USA)/statistiques et données numériques , Adulte d'âge moyen , Perte de poids/effets des médicaments et des substances chimiques , Incidence , Hypertension artérielle/traitement médicamenteux , Hypertension artérielle/épidémiologie , Facteurs de risque , Hyperlipidémies/traitement médicamenteux , Hyperlipidémies/épidémiologie , Peptides glucagon-like
SÉLECTION CITATIONS
DÉTAIL DE RECHERCHE
...