Titre : Substances humiques

Substances humiques : Questions médicales fréquentes

Termes MeSH sélectionnés :

Prostatic Neoplasms
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une carence en substances humiques ?\nQuels tests sont utilisés pour mesurer les substances humiques ?\nLes substances humiques peuvent-elles être mesurées dans le sang ?\nQuels indicateurs de santé des sols sont liés aux substances humiques ?\nComment évaluer l'impact des substances humiques sur la santé des plantes ?", "url": "https://questionsmedicales.fr/mesh/D006812?mesh_terms=Prostatic+Neoplasms&page=5#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Substances humiques", "description": "Quels symptômes indiquent un manque de substances humiques dans le sol ?\nLes substances humiques affectent-elles la qualité de l'eau ?\nComment les substances humiques influencent-elles la santé des sols ?\nQuels effets les substances humiques ont-elles sur les cultures ?\nLes substances humiques peuvent-elles causer des symptômes chez l'homme ?", "url": 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en agriculture ?\nComment les substances humiques aident-elles à traiter les sols pollués ?\nLes substances humiques sont-elles utilisées en médecine ?", "url": "https://questionsmedicales.fr/mesh/D006812?mesh_terms=Prostatic+Neoplasms&page=5#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Substances humiques", "description": "Quelles complications peuvent survenir avec une carence en substances humiques ?\nLes substances humiques peuvent-elles interagir avec des polluants ?\nComment une mauvaise gestion des substances humiques affecte-t-elle l'environnement ?\nLes substances humiques peuvent-elles causer des problèmes de santé ?\nQuels effets les substances humiques ont-elles sur les écosystèmes aquatiques ?", "url": "https://questionsmedicales.fr/mesh/D006812?mesh_terms=Prostatic+Neoplasms&page=5#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Substances humiques", "description": "Quels facteurs augmentent la dégradation des substances humiques ?\nComment le changement climatique affecte-t-il les substances humiques ?\nQuels types de sols sont plus susceptibles de perdre des substances humiques ?\nL'utilisation de pesticides influence-t-elle les substances humiques ?\nQuels impacts des pratiques agricoles intensives sur les substances humiques ?", "url": "https://questionsmedicales.fr/mesh/D006812?mesh_terms=Prostatic+Neoplasms&page=5#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment diagnostiquer une carence en substances humiques ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Le diagnostic repose sur l'analyse des sols et des échantillons d'eau pour évaluer leur teneur en humiques." } }, { "@type": "Question", "name": "Quels tests sont utilisés pour mesurer les substances humiques ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des tests chimiques et spectroscopiques, comme la spectroscopie UV-Vis, sont couramment utilisés." } }, { "@type": "Question", "name": "Les substances humiques peuvent-elles être mesurées dans le sang ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Non, elles sont principalement présentes dans le sol et l'eau, pas dans le sang humain." } }, { "@type": "Question", "name": "Quels indicateurs de santé des sols sont liés aux substances humiques ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "La biodiversité microbienne et la capacité de rétention d'eau sont des indicateurs clés." } }, { "@type": "Question", "name": "Comment évaluer l'impact des substances humiques sur la santé des plantes ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "On évalue la croissance des plantes et leur résistance aux maladies en fonction de leur teneur en humiques." } }, { "@type": "Question", "name": "Quels symptômes indiquent un manque de substances humiques dans le sol ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Des symptômes incluent une croissance réduite des plantes et une mauvaise rétention d'eau." } }, { "@type": "Question", "name": "Les substances humiques affectent-elles la qualité de l'eau ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles améliorent la qualité de l'eau en réduisant la toxicité et en favorisant la filtration." } }, { "@type": "Question", "name": "Comment les substances humiques influencent-elles la santé des sols ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Elles améliorent la structure du sol, augmentent la fertilité et favorisent la biodiversité." } }, { "@type": "Question", "name": "Quels effets les substances humiques ont-elles sur les cultures ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Elles augmentent le rendement des cultures et améliorent leur résistance aux stress environnementaux." } }, { "@type": "Question", "name": "Les substances humiques peuvent-elles causer des symptômes chez l'homme ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Non, elles ne sont pas toxiques pour l'homme et n'entraînent pas de symptômes directs." } }, { "@type": "Question", "name": "Comment prévenir la dégradation des substances humiques dans le sol ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Pratiquer une agriculture durable et éviter l'érosion du sol aide à préserver les humiques." } }, { "@type": "Question", "name": "Quelles pratiques agricoles favorisent les substances humiques ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "La rotation des cultures et l'utilisation de cultures de couverture favorisent leur accumulation." } }, { "@type": "Question", "name": "Comment la gestion de l'eau influence-t-elle les substances humiques ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Une gestion adéquate de l'eau prévient le lessivage des humiques et maintient leur concentration." } }, { "@type": "Question", "name": "Les substances humiques peuvent-elles être protégées par des pratiques de conservation ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les pratiques de conservation comme le paillage aident à maintenir leur niveau dans le sol." } }, { "@type": "Question", "name": "Quel rôle joue la biodiversité dans la préservation des substances humiques ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Une biodiversité riche favorise la décomposition et la formation de substances humiques dans le sol." } }, { "@type": "Question", "name": "Comment améliorer la teneur en substances humiques du sol ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "L'ajout de compost, de fumier ou d'amendements organiques enrichit le sol en humiques." } }, { "@type": "Question", "name": "Quels produits contiennent des substances humiques ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Des extraits de tourbe, de lignite et des produits à base de compost en contiennent." } }, { "@type": "Question", "name": "Les substances humiques peuvent-elles être utilisées en agriculture ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles sont utilisées comme amendements pour améliorer la fertilité et la structure du sol." } }, { "@type": "Question", "name": "Comment les substances humiques aident-elles à traiter les sols pollués ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Elles peuvent immobiliser les contaminants et améliorer la dégradation des polluants." } }, { "@type": "Question", "name": "Les substances humiques sont-elles utilisées en médecine ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Elles sont explorées pour leurs propriétés antioxydantes et anti-inflammatoires, mais pas encore validées." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir avec une carence en substances humiques ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Une carence peut entraîner une baisse de la fertilité du sol et des rendements agricoles." } }, { "@type": "Question", "name": "Les substances humiques peuvent-elles interagir avec des polluants ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles peuvent se lier à des polluants, réduisant leur biodisponibilité et leur toxicité." } }, { "@type": "Question", "name": "Comment une mauvaise gestion des substances humiques affecte-t-elle l'environnement ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Elle peut entraîner une dégradation des sols, une perte de biodiversité et une pollution de l'eau." } }, { "@type": "Question", "name": "Les substances humiques peuvent-elles causer des problèmes de santé ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Non, elles ne sont pas considérées comme nocives pour la santé humaine lorsqu'elles sont utilisées correctement." } }, { "@type": "Question", "name": "Quels effets les substances humiques ont-elles sur les écosystèmes aquatiques ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Elles peuvent améliorer la qualité de l'eau et soutenir la vie aquatique en réduisant la toxicité." } }, { "@type": "Question", "name": "Quels facteurs augmentent la dégradation des substances humiques ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "L'érosion, la surexploitation des sols et l'utilisation excessive de produits chimiques sont des facteurs clés." } }, { "@type": "Question", "name": "Comment le changement climatique affecte-t-il les substances humiques ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Le changement climatique peut modifier la décomposition de la matière organique, affectant les humiques." } }, { "@type": "Question", "name": "Quels types de sols sont plus susceptibles de perdre des substances humiques ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Les sols sableux et ceux soumis à une forte érosion sont plus susceptibles de perdre des humiques." } }, { "@type": "Question", "name": "L'utilisation de pesticides influence-t-elle les substances humiques ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'utilisation excessive de pesticides peut nuire à la biodiversité et réduire les humiques." } }, { "@type": "Question", "name": "Quels impacts des pratiques agricoles intensives sur les substances humiques ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Elles entraînent une dégradation du sol et une diminution des substances humiques, affectant la fertilité." } } ] } ] }

Sources (10000 au total)

Therapy decisions after diagnosis of prostate cancer in men with negative prostate MRI.

To investigate the clinical implications of magnetic resonance imaging (MRI) negative prostate cancer (PCa) in a cohort of men undergoing transperineal prostate biopsy.... We included all men without prior diagnosis of PCa undergoing transperineal template saturation ± fusion-guided targeted biopsy of the prostate between November 2014 and March 2018. Before biopsy, all... From 515 patients undergoing prostate biopsy, 171 (33.2%) patients had a negative and 344 (66.8%) a positive MRI. Pathology review stratified for MRI negative and positive cases revealed nsPCa in 27 (... Only few men with MRI negative PCa need active cancer treatment at the time of diagnosis, while the majority opts for AS. Omitting prostate biopsies and performing a follow-up MRI may be a safe altern...

Using prostate-specific membrane antigen positron-emission tomography to guide prostate biopsies and stage men at high-risk of prostate cancer.

To assess whether a diagnostic pathway in which prostate-specific membrane antigen (PSMA) positron-emission tomography (PET)/computed tomography (CT) is used as a single imaging modality is feasible t... A total of 60 men with a prostate-specific antigen (PSA) level of 20-50 ng/mL underwent... Lesions suspicious for PCa in the prostate gland were observed on all PSMA-PET/CTs. A total of 27/60 men (45%) already had metastatic disease on staging... Using the PSMA-driven single imaging modality pathway in biopsy-naïve men at high-risk of PCa, a substantial number of diagnostic MRI scans could be avoided while at the same time obtaining adequate t...

Holmium laser enucleation of the prostate in men on active surveillance for prostate cancer with refractory lower urinary tract symptoms secondary to enlarged prostates.

The surgical treatment of men with lower urinary tract symptoms (LUTS) and significantly enlarged symptomatic prostates on active surveillance (AS) for low-risk prostate cancer (PCa) is not well defin... Men on AS who underwent HoLEP between 2013 and 2019 were identified. Data regarding preoperative cancer workup, prostate-specific antigen (PSA), perioperative outcomes, and voiding parameters were ana... Twenty men met the inclusion criteria. Preoperative mean max flow 7.9 ml/s, median postvoid residual 101 cc, and mean transrectal ultrasound prostate size 99 cc. Patients had a median adjusted preoper... Men on AS for low-risk PCa can safely undergo HoLEP with significantly improved voiding parameters. Postoperative monitoring with PSA, mpMRI, and PBx can detect disease progression requiring definitiv...

Access to Prostate-Specific Antigen Testing and Mortality Among Men With Prostate Cancer.

Prostate-specific antigen (PSA) screening for prostate cancer is controversial but may be associated with benefit for certain high-risk groups.... To evaluate associations of county-level PSA screening prevalence with prostate cancer outcomes, as well as variation by sociodemographic and clinical factors.... This cohort study used data from cancer registries based in 8 US states on Hispanic, non-Hispanic Black, and non-Hispanic White men aged 40 to 99 years who received a diagnosis of prostate cancer betw... County-level PSA screening prevalence was estimated using the Behavior Risk Factor Surveillance System survey data from 2004, 2006, 2008, 2010, and 2012 and weighted by population characteristics.... Multivariable logistic, Cox proportional hazards regression, and competing risks models were fit to estimate adjusted odds ratios (AOR) and adjusted hazard ratios (AHR) for associations of county-leve... Of 814 987 men with prostate cancer, the mean (SD) age was 67.3 (9.8) years, 7.8% were Hispanic, 12.2% were non-Hispanic Black, and 80.0% were non-Hispanic White; 17.0% had advanced disease. There wer... This population-based cohort study of men with prostate cancer suggests that higher county-level prevalence of PSA screening was associated with lower odds of advanced disease, all-cause mortality, an...

Prostate cancer risk prediction based on clinical factors and prostate-specific antigen.

The incidence rate of prostate cancer (PCa) has continued to rise in Korea. This study aimed to construct and evaluate a 5-year PCa risk prediction model using a cohort with PSA < 10 ng/mL by incorpor... The PCa risk prediction model including PSA levels and individual risk factors was constructed using a cohort of 69,319 participants from the Kangbuk Samsung Health Study. 201 registered PCa incidence... The risk prediction model included age, smoking status, alcohol consumption, family history of PCa, past medical history of dyslipidemia, cholesterol levels, and PSA level. Especially, an elevated PSA... Our risk prediction model was effective in predicting PCa in a population according to PSA levels. When PSA levels are inconclusive, an assessment of both PSA and specific individual risk factors (e.g...

Salvage prostate brachytherapy in radiorecurrent prostate cancer: An international Delphi consensus study.

Local recurrences after previous radiotherapy (RT) are increasingly being identified in biochemically recurrent prostate cancer. Salvage prostate brachytherapy (BT) is an effective and well tolerated ... International experts in salvage prostate BT were invited (n = 34) to participate. A three-round modified Delphi technique was utilized, with questions focused on patient- and cancer-specific criteria... Thirty international experts agreed to participate. Consensus was achieved for 56% (18/32) of statements. Consensus was achieved in several areas of patient selection: 1) A minimum of 2-3 years from i... Areas of consensus within our Delphi study may serve as practical advice for salvage prostate BT. Future research in salvage BT should address areas of controversy identified in our study....

Bidirectional influence between benign prostatic hyperplasia, prostate cancer, and prostatitis and mental disorders: two-sample and multivariate mendelian randomization analyses.

We aimed to use Mendelian randomization (MR) to determine the causality between fifteen major mental disorders (MDs) and benign prostatic hyperplasia (BPH), prostate cancer (PCa), and prostatitis.... The main MR analysis was performed using the inverse variance-weighted (IVW) method.... The study found that insomnia (odds ratio [OR], 1.6190;... Our findings provide clinicians with a basis for developing programs to prevent or treat MDs and prostatic diseases....

A pilot study of AI-assisted reading of prostate MRI in Organized Prostate Cancer Testing.

To evaluate the feasibility of AI-assisted reading of prostate magnetic resonance imaging (MRI) in Organized Prostate cancer Testing (OPT).... Retrospective cohort study including 57 men with elevated prostate-specific antigen (PSA) levels ≥3 µg/L that performed bi-parametric MRI in OPT. The results of a CE-marked deep learning (DL) algorith... The number of positive MRIs was 13 (23%), 8 (14%), and 29 (51%) for the local radiologists, expert consensus, and DL, respectively. Kappa scores were moderate for local radiologists versus expert cons... The Dl-algorithm showed low agreement with both local and expert radiologists. Training and validation of DL-algorithms in specific screening cohorts is essential before introduction in organized test...