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Sökning: AMNE:(MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Urologi och njurmedicin) > Forskningsöversikt

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1.
  • Friedli, Iris, et al. (författare)
  • Magnetic Resonance Imaging in Clinical Trials of Diabetic Kidney Disease
  • 2023
  • Ingår i: Journal of Clinical Medicine. - 2077-0383. ; 12:14
  • Forskningsöversikt (refereegranskat)abstract
    • Chronic kidney disease (CKD) associated with diabetes mellitus (DM) (known as diabetic kidney disease, DKD) is a serious and growing healthcare problem worldwide. In DM patients, DKD is generally diagnosed based on the presence of albuminuria and a reduced glomerular filtration rate. Diagnosis rarely includes an invasive kidney biopsy, although DKD has some characteristic histological features, and kidney fibrosis and nephron loss cause disease progression that eventually ends in kidney failure. Alternative sensitive and reliable non-invasive biomarkers are needed for DKD (and CKD in general) to improve timely diagnosis and aid disease monitoring without the need for a kidney biopsy. Such biomarkers may also serve as endpoints in clinical trials of new treatments. Non-invasive magnetic resonance imaging (MRI), particularly multiparametric MRI, may achieve these goals. In this article, we review emerging data on MRI techniques and their scientific, clinical, and economic value in DKD/CKD for diagnosis, assessment of disease pathogenesis and progression, and as potential biomarkers for clinical trial use that may also increase our understanding of the efficacy and mode(s) of action of potential DKD therapeutic interventions. We also consider how multi-site MRI studies are conducted and the challenges that should be addressed to increase wider application of MRI in DKD.
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2.
  • Ragnarsdottir, Bryndis, et al. (författare)
  • TLR- and CXCR1-dependent innate immunity: insights into the genetics of urinary tract infections.
  • 2008
  • Ingår i: European Journal of Clinical Investigation. - : Wiley. - 0014-2972 .- 1365-2362. ; 38 Suppl 2, s. 12-20
  • Forskningsöversikt (refereegranskat)abstract
    • The susceptibility to urinary tract infection (UTI) is controlled by the innate immune response and Toll like receptors (TLRs) are the sentinels of this response. If productive, TLR4 signalling may initiate the symptomatic disease process. In the absence of TLR4 signalling the infected host instead develops an asymptomatic carrier state. The activation of mucosal TLR4 is also influenced by the properties of the infecting strain, and pathogens use their virulence factors to trigger 'pathogen-specific' TLR4 responses in the urinary tract but do not respond to the asymptomatic carrier strains in patients with asymptomatic bacteriuria (ABU). The TLR4 dependence has been demonstrated in mice and the relevance of low TLR4 function for protection for human disease was recently confirmed in children with asymptomatic bacteriuria, who expressed less TLR4 than age matched controls. Functional chemokines and functional chemokine receptors are crucial for neutrophil recruitment, and for the neutrophil dependent bacterial clearance. Interleukin (IL)-8 receptor deficient mice develop acute septic infections and chronic tissue damage, due to aberrant neutrophil function. This mechanism is relevant for human UTI as pyelonephritis prone children express low levels of the human CXCL8 (Il-8) receptor, CXC chemokine receptor 1 (CXCR1) and often have heterozygous CXCR1 polymorphisms. This review illustrates how intimately the innate response and the susceptibility to UTI are linked and sophisticated recognition mechanisms that rely on microbial virulence and on host TLR4 and CXCR1 signalling.
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3.
  • Franzén, Karin M, 1958-, et al. (författare)
  • Surgery for urinary incontinence in women 65 years and older : a systematic review
  • 2015
  • Ingår i: International Urogynecology Journal. - : Springer. - 0937-3462 .- 1433-3023. ; 26:8, s. 1095-1102
  • Forskningsöversikt (refereegranskat)abstract
    • Introduction and hypothesis: Urinary incontinence (UI) is common among the elderly, but the literature is sparse on the surgical treatment of UI among the elderly. This systematic review aims to assess the effectiveness of surgical interventions as treatment for urinary incontinence in the elderly population ≥65 years of age.Methods: Randomized controlled trials (RCT) and prospective nonrandomized studies (NRS) were included. The databases PubMed (NLM), EMBASE (Elsevier), Cochrane Library (Wiley), and Cinahl (EBSCO) were searched for the period 1966 up to October 2013. The population had to be ≥65 years of age and had to have undergone urethral sling procedures, periurethral injection of bulking agents, artificial urinary sphincter surgery, bladder injection treatment with onabotulinumtoxin A or sacral neuromodulation treatment. Eligible outcomes were episodes of incontinence/urine leakage, adverse events, and quality of life.The studies included had to be at a moderate or low risk of bias. Mean difference (MD) or standard mean difference (SMD)as well as risk difference (RD) and the 95 % CI were calculated.Results: Five studies-all on the suburethral sling procedure in women- that fulfilled the inclusion criteria were identified. The proportion of patients reporting persistent SUI after surgery ranged from 5.2 to 17.6 %. One study evaluating quality of life (QoL) showed a significant improvement after surgery. The complication rates varied between 1 and 26 %, mainly bladder perforation, bladder emptying disturbances, and de novo urge.Conclusion: The suburethral sling procedure improves continence as well as QoL among elderly women with SUI; however, evidence is limited.
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4.
  • Aydogdu, Özgu, 1978 (författare)
  • Urinary stone disease and obesity: Different pathologies sharing common biochemical mechanisms.
  • 2012
  • Ingår i: World journal of nephrology. - : Baishideng Publishing Group Inc.. - 2220-6124. ; 1:1, s. 12-5
  • Forskningsöversikt (refereegranskat)abstract
    • The prevalence of urolithiasis is increasing in parallel with the escalating rate of obesity worldwide. It has previously been speculated that obesity is a potential risk factor for urinary stone disease. The possibility that common biochemical mechanisms underlie both obesity and urolithiasis is remarkable. Better understanding of possible common mechanisms of these diseases could potentially lead to a better management of urinary stone prevention. The prevention of urinary stone formation gives clinicians an acceptable reason to encourage lifestyle modification and weight loss through a regular diet. In this review, the association of obesity with urinary stone disease, possible common biochemical mechanisms, effects of dietary habits and weight loss on stone formation, as well as difficulties in surgical management of obese individuals with urolithiasis are discussed.
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5.
  • Burgu, Berk, et al. (författare)
  • Circumcision: pros and cons.
  • 2010
  • Ingår i: Indian journal of urology : IJU : journal of the Urological Society of India. - : Medknow. - 1998-3824. ; 26:1, s. 12-5
  • Forskningsöversikt (refereegranskat)abstract
    • Circumcision is possibly the most frequently performed elective surgical procedure in men. It can simply be described as the excision of the preputium. There have been several studies about the association between circumcision and urinary tract infections (UTI). Many studies have demonstrated that the frequency of UTI increase in uncircumcised males, especially in the first year of life. This review discusses the embryology of the preputium, epidemiology, indications, complications and benefits of circumcision, as well as operation and anesthesiology techniques. It especially examines the association between UTI and circumcision and the importance of circumcision in congenital urinary system anomalies. In addition, this review examines the associations between circumcision and sexually transmitted diseases, including HIV, and the protective role of circumcision on penile cancer.
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6.
  • Burgu, Berk, et al. (författare)
  • Vascular endothelial growth factor and bladder from a different perspective: not only an angiogenic factor.
  • 2010
  • Ingår i: Journal of pediatric surgery. - : Elsevier BV. - 1531-5037 .- 0022-3468. ; 45:2, s. 447-52
  • Forskningsöversikt (refereegranskat)abstract
    • Angiogenesis has a key role for embryonic development and is crucial in several major diseases. Molecular basis of angiogenesis has been widely investigated (J Biochem Mol Biol. 2006;39:469-478, Oncogene. 2000;19:5598-5605). In this review, vascular endothelial growth factor (VEGF) and related receptors and their key roles in embryonic bladder development are discussed. The normal VEGF expression and related angiogenesis pattern of embryonic bladder are highlighted. The VEGF family especially VEGF-A is the major player in angiogenesis as well as many other angiogenic factors and activates 2 tyrosine kinase receptors, VEGFR-1 and VEGFR-2 (J Biochem Mol Biol. 2006;39:469-478). Besides its worthy role in angiogenesis, VEGF-A also seems to participate in normal bladder development (J Urol. 2007;177:1552-1557, Br J Urol Int. 2006;98:217-225). In previous studies, we have shown that exogenous VEGF or hypoxia-induced endogenous upregulation of this protein accelerates the growth of the bladder by detrusor and urothelium hypertrophy and hyperplasia (J Urol. 2007;177:1552-1557, Br J Urol Int. 2006;98:217-225, Dev Biol. 1997;183:139-149, Neurourol Urodyn. 2004;23:342-348). This abrupt role of VEGF on detrusor muscle through a hypoxic pathway may potentially be a part of the solution for many urologic conditions such as remodeling of detrusor muscle in antenatal bladder outlet obstruction.
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7.
  • Celik, Orcun, et al. (författare)
  • Current medical diagnosis and management of vesicoureteral reflux in children.
  • 2014
  • Ingår i: Nephro-urology monthly. - : Briefland. - 2251-7006 .- 2251-7014. ; 6:1
  • Forskningsöversikt (refereegranskat)abstract
    • Vesico-ureteral reflux (VUR) is presented in approximately %1 of children and is associated with an increased risk of pyelonephritis and renal scarring. Despite its prevalence and morbidity, many aspects of VUR diagnosis and treatment are controversial. We objectively assessed the published data; the data base for many current diagnoses and treatment patterns of VUR is limited. Recent studies have focused on developed determination of VUR-related renal morbidity, improved stratification tools that children would benefit most from which VUR treatment option, and improved reporting of the long-term outcomes of VUR treatments in children who are at risk for VUR. In this review, the advances in the diagnosis and treatment of VUR will be accompanied by the current guidelines.
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8.
  • Lindgren Belal, Sarah, et al. (författare)
  • Applications of Artificial Intelligence in PSMA PET/CT for Prostate Cancer Imaging
  • 2024
  • Ingår i: Seminars in Nuclear Medicine. - 1558-4623 .- 0001-2998. ; 54:1, s. 141-149
  • Forskningsöversikt (refereegranskat)abstract
    • Prostate-specific membrane antigen (PSMA) positron emission tomography/computed tomography (PET/CT) has emerged as an important imaging technique for prostate cancer. The use of PSMA PET/CT is rapidly increasing, while the number of nuclear medicine physicians and radiologists to interpret these scans is limited. Additionally, there is variability in interpretation among readers. Artificial intelligence techniques, including traditional machine learning and deep learning algorithms, are being used to address these challenges and provide additional insights from the images. The aim of this scoping review was to summarize the available research on the development and applications of AI in PSMA PET/CT for prostate cancer imaging. A systematic literature search was performed in PubMed, Embase and Cinahl according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. A total of 26 publications were included in the synthesis. The included studies focus on different aspects of artificial intelligence in PSMA PET/CT, including detection of primary tumor, local recurrence and metastatic lesions, lesion classification, tumor quantification and prediction/prognostication. Several studies show similar performances of artificial intelligence algorithms compared to human interpretation. Few artificial intelligence tools are approved for use in clinical practice. Major limitations include the lack of external validation and prospective design. Demonstrating the clinical impact and utility of artificial intelligence tools is crucial for their adoption in healthcare settings. To take the next step towards a clinically valuable artificial intelligence tool that provides quantitative data, independent validation studies are needed across institutions and equipment to ensure robustness.
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9.
  • Holmberg, Mats, 1958, et al. (författare)
  • Supporting sexuality and improving sexual function in transgender persons.
  • 2019
  • Ingår i: Nature reviews. Urology. - : Springer Science and Business Media LLC. - 1759-4820 .- 1759-4812. ; 16, s. 121-139
  • Forskningsöversikt (refereegranskat)abstract
    • Sexuality is important for most cisgender as well as transgender persons and is an essential aspect of quality of life. For both the patient and their clinicians, managing gender dysphoria includes establishing a comfortable relationship with sexual health issues, which canevolve throughout the course of gender-affirming treatment. Gender-affirming endocrine treatment of transgender men and women has considerable effects on sex drive and sexual function. Gender-affirming surgery (GAS) can improve body satisfaction and ease gender dysphoria, but surgery itself can be associated with sexual sequelae associated with physical constraints of the new genitals or postsurgical pain, psychological difficulties with accepting thenew body, or social aspects of having changed gender. In general, a positive body image is associated with better sexual function and satisfaction, but satisfaction with sexual function after GAS can be present despite dissatisfaction with the surgery and vice versa. Factors involved inthe integrated experience of gender-affirming treatment and the way in which sexuality is perceived are complex, and supporting sexuality and improving sexual function in transgender patients is, correspondingly, multifaceted. As the transgender patient moves through their life before, during, and after gender-affirming treatment, sexuality and sexual function should be considered and maximized at all stages in order to improve quality of life.
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10.
  • Agah, Shahram, et al. (författare)
  • Systematic review with meta-analysis: Effects of probiotic supplementation on symptoms in functional dyspepsia
  • 2020
  • Ingår i: Journal of Functional Foods. - : Elsevier BV. - 1756-4646. ; 68
  • Forskningsöversikt (refereegranskat)abstract
    • The pathophysiology of functional dyspepsia (FD) remains poorly understood, but alterations of the small intestinal microbiome have been observed. The place of probiotics in treatment is uncertain. We performed a systematic review and meta-analysis of the currently available randomized, controlled trials (RCTs) to evaluate the potential beneficial effects and risks of probiotics in FD. Pubmed, EMBASE, Scopus, Web of Science and the Cochrane Controlled Trials Register were searched (up to May 2019) for RCTs evaluating the effects of probiotic supplementation compared to placebo in adults with FD. Two reviewers independently assessed eligibility, trial quality and extracted information from identified articles. To compare the effects of probiotics with placebo, risk ratios (RRs) with 95% confidence intervals (CIs) were pooled using random effects models. Six trials, including 422 participants were included but only three RCTs could be included in the meta-analysis. Lactobacillus strains showed potential positive effects in terms of improving upper gastrointestinal (GI) symptoms in patients with FD. Probiotic supplementation tended to improve global dyspepsia score (n = 3 RCTs, risk ratio [RR]: 1.35, 95% CI 0.99 to 1.84; P = 0.061) and bacterial composition in the GI tract. Probiotics were well tolerated without any serious adverse events. While the available data suggest that supplementation with probiotics may improve GI symptoms in patients with FD, the evidence is insufficient to draw clear conclusions regarding efficacy. Thus, high-quality RCTs are needed to establish the beneficial effects of probiotic supplementation on FD outcomes.
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