Titre : Masse moléculaire

Masse moléculaire : Questions médicales fréquentes

Termes MeSH sélectionnés :

Case-Control Studies
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masse moléculaire influence-t-elle l'absorption des médicaments ?\nY a-t-il des symptômes liés à des protéines de masse moléculaire élevée ?\nLes symptômes d'intolérance alimentaire sont-ils liés à la masse moléculaire ?", "url": "https://questionsmedicales.fr/mesh/D008970?mesh_terms=Case-Control+Studies&page=4#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Masse moléculaire", "description": "Comment prévenir les allergies liées à la masse moléculaire ?\nY a-t-il des mesures préventives pour les troubles métaboliques ?\nLa recherche sur la masse moléculaire peut-elle prévenir des maladies ?\nComment l'éducation nutritionnelle aide-t-elle à prévenir des problèmes liés à la masse moléculaire ?\nLes tests génétiques peuvent-ils prévenir des maladies liées à la masse moléculaire ?", "url": "https://questionsmedicales.fr/mesh/D008970?mesh_terms=Case-Control+Studies&page=4#section-prévention" }, { "@type": "MedicalWebPage", "name": 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masse moléculaire élevée ?", "url": "https://questionsmedicales.fr/mesh/D008970?mesh_terms=Case-Control+Studies&page=4#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Masse moléculaire", "description": "Quels facteurs augmentent le risque d'allergies liées à la masse moléculaire ?\nLa génétique joue-t-elle un rôle dans les troubles liés à la masse moléculaire ?\nL'environnement influence-t-il la masse moléculaire des allergènes ?\nLe mode de vie peut-il affecter la masse moléculaire des substances ?\nQuels sont les facteurs de risque pour les maladies liées à la masse moléculaire ?", "url": "https://questionsmedicales.fr/mesh/D008970?mesh_terms=Case-Control+Studies&page=4#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment mesure-t-on la masse moléculaire ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "La masse moléculaire est mesurée par des techniques comme la spectrométrie de masse." } }, { "@type": "Question", "name": "Quels instruments sont utilisés pour déterminer la masse moléculaire ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des appareils comme le chromatographe et le spectromètre de masse sont utilisés." } }, { "@type": "Question", "name": "La masse moléculaire est-elle importante en biologie ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elle aide à comprendre les interactions moléculaires et les réactions biochimiques." } }, { "@type": "Question", "name": "Peut-on calculer la masse moléculaire d'une protéine ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Oui, en additionnant les masses atomiques des acides aminés qui la composent." } }, { "@type": "Question", "name": "Qu'est-ce qu'une masse moléculaire moyenne ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "C'est la masse moléculaire calculée pour un mélange de molécules de différentes tailles." } }, { "@type": "Question", "name": "Quels symptômes peuvent indiquer une anomalie de masse moléculaire ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Des symptômes comme des réactions allergiques ou des troubles métaboliques peuvent survenir." } }, { "@type": "Question", "name": "La masse moléculaire affecte-t-elle la solubilité ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Oui, une masse moléculaire élevée peut réduire la solubilité d'une substance dans l'eau." } }, { "@type": "Question", "name": "Comment la masse moléculaire influence-t-elle l'absorption des médicaments ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Les médicaments à masse moléculaire faible sont généralement mieux absorbés par l'organisme." } }, { "@type": "Question", "name": "Y a-t-il des symptômes liés à des protéines de masse moléculaire élevée ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles peuvent causer des maladies comme l'amylose ou des troubles de la coagulation." } }, { "@type": "Question", "name": "Les symptômes d'intolérance alimentaire sont-ils liés à la masse moléculaire ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certaines intolérances peuvent être dues à des protéines de masse moléculaire élevée." } }, { "@type": "Question", "name": "Comment prévenir les allergies liées à la masse moléculaire ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Évitez les allergènes connus et consultez un allergologue pour des tests appropriés." } }, { "@type": "Question", "name": "Y a-t-il des mesures préventives pour les troubles métaboliques ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Oui, un mode de vie sain et une alimentation équilibrée peuvent aider à prévenir ces troubles." } }, { "@type": "Question", "name": "La recherche sur la masse moléculaire peut-elle prévenir des maladies ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elle peut aider à identifier des biomarqueurs et des cibles thérapeutiques." } }, { "@type": "Question", "name": "Comment l'éducation nutritionnelle aide-t-elle à prévenir des problèmes liés à la masse moléculaire ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Elle informe sur les aliments à éviter et ceux à privilégier pour une bonne santé." } }, { "@type": "Question", "name": "Les tests génétiques peuvent-ils prévenir des maladies liées à la masse moléculaire ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Oui, ils peuvent identifier des prédispositions à certaines maladies héréditaires." } }, { "@type": "Question", "name": "Comment traiter une allergie liée à une masse moléculaire ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Le traitement inclut des antihistaminiques et l'évitement de l'allergène identifié." } }, { "@type": "Question", "name": "Les médicaments à masse moléculaire élevée sont-ils efficaces ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Ils peuvent être efficaces, mais leur absorption et leur distribution peuvent être limitées." } }, { "@type": "Question", "name": "Peut-on modifier la masse moléculaire d'un médicament ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Oui, par des modifications chimiques pour améliorer l'efficacité ou la biodisponibilité." } }, { "@type": "Question", "name": "Quels traitements sont disponibles pour les troubles métaboliques ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Des traitements incluent des régimes alimentaires spécifiques et des médicaments adaptés." } }, { "@type": "Question", "name": "Comment les thérapies géniques sont-elles liées à la masse moléculaire ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Elles utilisent des vecteurs de masse moléculaire spécifique pour délivrer des gènes thérapeutiques." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir avec des protéines de masse moléculaire élevée ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Elles peuvent entraîner des maladies comme l'amylose ou des troubles de la coagulation." } }, { "@type": "Question", "name": "Les complications liées à la masse moléculaire affectent-elles le traitement ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles peuvent compliquer l'absorption et l'efficacité des traitements médicamenteux." } }, { "@type": "Question", "name": "Comment les complications métaboliques sont-elles liées à la masse moléculaire ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Des anomalies dans la masse moléculaire des métabolites peuvent causer des dysfonctionnements." } }, { "@type": "Question", "name": "Les complications allergiques peuvent-elles être graves ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles peuvent entraîner des réactions anaphylactiques potentiellement mortelles." } }, { "@type": "Question", "name": "Quelles sont les complications des médicaments à masse moléculaire élevée ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Elles incluent des effets secondaires, une biodisponibilité réduite et des interactions médicamenteuses." } }, { "@type": "Question", "name": "Quels facteurs augmentent le risque d'allergies liées à la masse moléculaire ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Des antécédents familiaux d'allergies et une exposition précoce à des allergènes augmentent le risque." } }, { "@type": "Question", "name": "La génétique joue-t-elle un rôle dans les troubles liés à la masse moléculaire ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certaines maladies métaboliques ont une composante génétique significative." } }, { "@type": "Question", "name": "L'environnement influence-t-il la masse moléculaire des allergènes ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des facteurs environnementaux comme la pollution peuvent modifier les allergènes." } }, { "@type": "Question", "name": "Le mode de vie peut-il affecter la masse moléculaire des substances ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, une alimentation déséquilibrée peut influencer la composition et la masse moléculaire." } }, { "@type": "Question", "name": "Quels sont les facteurs de risque pour les maladies liées à la masse moléculaire ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Les facteurs incluent l'obésité, le diabète et des antécédents familiaux de maladies." } } ] } ] }

Sources (10000 au total)

Association between endometriosis and perinatal complications: a case-control study.

Recently, a history of endometriosis has been reported to be associated with several perinatal complications. However, it is unknown whether pre-pregnancy treatment for endometriosis reduces perinatal... This case-control study included 2781 deliveries at the Hirosaki University Hospital between January 2008 and December 2019. The deliveries were divided into a case group with a history of endometrios... Patients with a history of endometriosis had a significantly higher risk of placenta previa (crude odds ratio, 2.66; 95% confidence interval, 1.37‒4.83). Multiple logistic regression analysis showed t... A history of endometriosis is an independent risk factor for placenta previa. Given the limitations of this study, further research is needed to determine the impact of endometriosis surgery on perina...

Xenoestrogen concentration in women with endometriosis or leiomyomas: A case-control study.

Xenoestrogens are synthetic or naturally occurring chemicals capable of altering the endocrine system of humans and animals owing to their molecular similarity to endogenous hormones. There is limited... To examine xenoestrogen concentration (TEXB-α) differences between women with leiomyomas or endometriosis and control women, and to study the relationship between the clinical and sociodemographic cha... Prospective case-control study. We selected 221 women who underwent surgery at Quironsalud Madrid University Hospital between 2017 and 2021. The cases included 117 patients: 74 women who underwent sur... A significant majority of study participants (68.8%) had detectable levels of xenoestrogens. We found no association between TEXB-α levels in omental fat and the presence of myomas or endometriosis. I... This study found no association between omental xenoestrogen levels and leiomyomas or endometriosis. However, their presence in most participants and their association with highly polluted areas empha...

Traumatic masturbation and erectile dysfunction: A matched case-control study.

To identify atypical masturbatory behaviors (AMB) and to reveal their effects on both sexual and masturbational erection hardness in men with erectile dysfunction (ED).... Patients with ED and healthy controls were questioned about their masturbation habits. Accordingly, "rubbing in a prone position," "pressure on penis," and "masturbation through clothes" were included... The data of 448 participants, 266 (59%) from the patient group, and 182 (41%) from the control group were analyzed. The mean ages were 30 years in both groups (p = 0.734). The rate of "rubbing in a pr... Atypical masturbatory behaviors are more common in young men presenting with erectile dysfunction. These patients have higher erection hardness scores during masturbation compared to partnered sex....

Dietary fiber intake and risk of gallstone: a case-control study.

Gallstone disease (GSD) and its complications are major public health issues globally. Although many community-based studies had addressed the risk factors for GSD, little is known about the associati... In this case-control study, 189 GSD patients with less than one month of diagnosis and 342 age‑matched controls were enrolled. Dietary intakes were assessed using a 168-item semi-quantitative validate... Comparing the highest versus the lowest tertile, significant reverse associations were observed between odds of GSD and each category of dietary fiber intake including total (OR... Comprehensive assessment of the associations of dietary fiber intake with GSD showed that higher intakes of dietary fiber were significantly associated with reduced GSD risk....

Risk factors of childhood cancer in Armenia: a case-control study.

Childhood cancer (CC) is a leading cause of death among children aged 0-19 years worldwide. Each year, 400,000 new cases of CC are diagnosed globally. Given the between-country differences in CC incid... We used a case-control study design and enrolled participants from the only specialized pediatric hematology and oncology center in Armenia. Cases included patients ≤ 14 years old diagnosed and treate... Overall, 234 participants (117 cases, 117 controls) were included in the study. Based on the fitted model, maternal usage of folic acid during pregnancy was protective against CC, almost twice decreas... Despite the limited sample size of the study, significant modifiable risk factors for CC in Armenia were identified, all of which were linked to the period of pregnancy. The data from this study adds ...

High chitotriosidase and AGE levels in acromegaly: a case-control study.

Acromegaly is associated with oxidative stress and inflammation parameters. Chitotriosidase (CHITO) is a marker of macrophage activation and plays a pivotal role in the activation of inflammatory and ... Thirty controlled acromegaly patients and 41 age- and sex-matched control cases were studied. We obtained demographic data, hormonal and metabolic parameters, and cIMT. CHITO activity was measured wit... Higher CHITO, AGE, and hsCRP concentrations were observed in patients with acromegaly compared to controls. SOD levels were non-significantly higher in the acromegaly group, while catalase activities ... This is the first study investigating CHITO and AGE levels in patients with acromegaly. Serum CHITO, AGE, and hsCRP levels in acromegalic patients were significantly increased. It may be important to ...

Morphological risk factors for scaphoid fracture: a case-control study.

Most patients with a clinically suspected scaphoid fracture and normal initial radiograph are unnecessarily treated. Previously developed prediction rules using demographic and clinical risk are unabl... We retrospectively included adult patients with a clinically suspected scaphoid fracture between 2013 and 2019 in our case-control study. There were 82 patients with a scaphoid fracture and 158 patien... Of the 15 posteroanterior modes and 8 lateral modes identified and linear measurements performed, 1 PA mode was associated with a scaphoid fracture (PA mode 4; OR 1.40, CI 1.04-1.93, p = 0.031). We de... There was one complex wrist shape significantly associated with a scaphoid fracture. Since the association was weak and the shape is difficult to identify radiographs, we believe this morphological ri...

Risk factors for the occurrence of ampullary tumors: A case-control study.

The incidence of ampullary tumors is increasing but data on association with an increased exposure to certain risk factors are scanty.... To investigate risk and protective factors associated with the occurrence of ampullary tumors and whether these factors differ between ampullary tumors of the intestinal and pancreatobiliary subtypes ... The association between a large set of exposome features and ampullary tumors occurrence was investigated in a bi-centric case-control study after ethic committee approval and power calculation.... In 223 histologically confirmed patients and 446 controls, previous cholecystectomy (odd ratio [OR] = 2.07; 95% confidence interval [CI] = 1.34-3.20) and proton pump inhibitors use (OR = 1.66; 95% CI ... This is the first case-control study specifically highlighting factors associated with the occurrence of ampullary tumors. We report factors that are novel and plausible, in keeping with mechanisms de...