HOMERO BRUSCHINI
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Cirurgia, Faculdade de Medicina - Docente
LIM/55 - Laboratório de Urologia, Hospital das Clínicas, Faculdade de Medicina - Líder
LIM/55 - Laboratório de Urologia, Hospital das Clínicas, Faculdade de Medicina - Líder
10 resultados
Resultados de Busca
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- Periurethral muscle-derived mononuclear cell injection improves urethral sphincter restoration in rats(2017) TURCO, Marcelo Pitelli; SOUZA, Alex Balduino de; SOUSA, Isida de Campos; FRATINI, Paula; VERAS, Mariana Matera; RODRIGUES, Marcio Nogueira; BESSA JR., Jose de; BROLIO, Marina Pandolphi; LEITE, Katia Ramos Moreira; BRUSCHINI, Homero; SROUGI, Miguel; MIGLINO, Maria Angelica; GOMES, Cristiano MendesAimsInvestigate the effect of a novel cell-based therapy with skeletal muscle-derived mononuclear cells (SMDMCs) in a rat model of stress urinary incontinence. MethodsMale Wistar-Kyoto rats' hind limb muscles were enzymatically dissociated, and SMDMCs were isolated without needing expansion. The cell population was characterized. Twenty female rats underwent urethrolysis. One week later, 10 rats received periurethral injection of 10(6) cells (SMDMC group), and 10 rats received saline injections (Saline group). Ten rats underwent sham surgery (Sham group). Four weeks after injection, animals were euthanized and the urethra was removed. The incorporation of SMDMCs in the female urethra was evaluated with fluorescence in situ hybridization for the detection of Y-chromosomes. Hematoxylin and eosin, Masson's trichrome staining, and immunohistochemistry for actin and myosin were performed. The muscle/connective tissue, actin and myosin ratios were calculated. Morphological evaluation of the urethral diameters and fractional areas of the lumen, mucosa, and muscular layer was performed. ResultsSMDMCs population was consistent with the presence of muscle cells, muscle satellite cells, perivascular cells, muscle progenitor cells, and endothelial cells. SMDMCs were incorporated into the urethra. A significant decrease in the muscle/connective tissue ratio was observed in the Saline group compared with the SMDMC and Sham groups. The proportions of actin and myosin were significantly decreased in the Saline group. No differences were observed in the morphometric parameters. ConclusionsSDMSC were incorporated into the rat urethra and promoted histological recovery of the damaged urethral sphincter, resulting in decreased connective tissue deposition and increased muscle content.
- Single nucleotide polymorphism analysis in interstitial cystitis/painful bladder syndrome(2019) CASSAO, Valter D.; REIS, Sabrina T.; PIMENTA, Ruan; LUCON, Marcos; LEITE, Katia R. M.; SROUGI, Miguel; BRUSCHINI, HomeroIntroduction Interstitial Cystitis (IC) is a chronic condition diagnosed based on the presence of symptoms, such as suprapubic/pelvic pain, pressure or discomfort in association with urgency and increased urinary frequency. Confusable diseases must be excluded. However, there is no objective test or marker to establish the presence of the disease. Diagnosis and patient management is often difficult, given the poor understanding of IC pathogenesis and its unknown etiology and genetics. As an attempt to find biomarkers related to IC, we assessed the association between 20 selected single nucleotide polymorphism (SNPs) with IC and pain severity. Objectives To assess the presence of SNPs in IC patients' blood samples and correlate them with the disease and chronic pain condition. Methods A case-control study was conducted. We selected 34 female patients with IC diagnosed according to NIDDK criteria and 23 patients in the control group (previously healthy women with only stress urinary incontinence). IC patients were allocated into two groups according to reported chronic pain severity. We selected the following SNPs for analysis: rs1800871, rs1800872, rs1800896, rs1800471, rs1800629, rs361525, rs1800497, rs6311, rs6277, rs6276, rs6313, rs2835859, rs11127292, rs2243248, rs6887695, rs3212227, rs1799971, rs12579350, rs3813034, and rs6746030. Genotyping was performed by real- time PCR (qPCR). Results The polymorphic allele of SNP rs11127292 exhibited a higher frequency in subjects with IC than in controls (p: 0.01). The polymorphic allele of SNP rs6311 was more frequent in patients with severe pain (p:0.03). The frequency of the wild-type allele of SNP rs1799971 was higher in patients with mild to moderate pain (p:0.04). Conclusion The results indicated differences in SNP frequency among subjects, suggesting that SNPs could serve either as a marker of IC or as a marker of pain severity in IC patients. The study showed promising results regarding IC and polymorphism associations. These associations have not been previously reported.
article 3 Citação(ões) na Scopus Influence of a hypercholesterolemic diet on the collagen composition of the bladder wall extracellular matrix in rats(2012) NUNES, R. L. V.; BRUSCHINI, H.; UTSUNOMIA, K.; SILVEIRA, M. A.; TEODORO, W. R.; LEITE, K. R. M.; SROUGI, M.Purpose: To investigate the effects of hypercholesterolemic diet on the collagen composition of urinary bladder wall. Materials and methods: Forty-five female 4-week-old Wistar rats were divided into three groups: 1) control group fed a normal diet (ND); 2) model of bladder outlet obstruction (BOO) group fed a ND; and 3) group fed a HCD (1.25% cholesterol). Total serum cholesterol, LDL cholesterol and body weight were assessed at baseline. Four weeks later, group 2 underwent a surgical procedure resulting in a partial BOO, while groups 1 and 3 underwent a sham similar surgical procedure. Six weeks later, all animals had their bladders removed; serum cholesterol and LDL cholesterol levels and body weights were measured. Morphological and morphometric analysis was performed by Picrosirius staining and collagen types I and III were identified by immunofluorescence. Statistical analysis was completed and significance was considered when p<0.05. Results: Rats fed an HCD exhibited a significant increase in LDL cholesterol levels (p<0.001) and body weight (p=0.017), when compared to the groups fed a ND during the ten-week study period. Moreover, the HCD induced morphological alterations of the bladder wall collagen, regarding thin collagen fibers and the amounts of type III collagen when compared to the control group (p=0.002 and p=0.016, respectively), resembling the process promoted in the BOO model. Conclusions: A hyper-cholesterolemic diet in Wistar rats promoted morphological changes of the bladder types of collagen, as well as increases in body weight and LDL cholesterol.- Evaluation of the metabolism of glycosaminoglycans in patients with interstitial cystis(2014) LUCON, Marcos; MARTINS, Joao Roberto; LEITE, Katia Ramos Moreira; SOLER, Roberto; NADER, Helena B.; SROUGI, Miguel; BRUSCHINI, HomeroIntroduction: Painful bladder syndrome/interstitial cystitis (PBS/IC) pathogenesis is not fully known, but evidence shows that glycosaminoglycans (GAG) of bladder urothelium can participate in its genesis. The loss of these compounds facilitates the contact of urine compounds with deeper portions of bladder wall triggering an inflammatory process. We investigated GAG in urine and tissue of PBS/IC and pure stress urinary incontinence (SUI) patients to better understand its metabolism. Materials and Methods: Tissue and urine of 11 patients with PBS/IC according to NIDDK criteria were compared to 11 SUI patients. Tissue samples were analyzed by histological, immunohistochemistry and immunofluorescence methods. Statistical analysis were performed using t Student test and Anova, considering significant when p < 0.05. Results: PBS/IC patients had lower concentration of GAG in urine when compared to SUI (respectively 0.45 ± 0.11 x 0.62 ± 0.13 mg/mg creatinine, p < 0.05). However, there was no reduction of the content of GAG in the urothelium of both groups. Immunofluorescence showed that PBS/IC patients had a stronger staining of TGF-beta, decorin (a proteoglycan of chondroitin/dermatan sulfate), fibronectin and hyaluronic acid. Conclusion: the results suggest that GAG may be related to the ongoing process of inflammation and remodeling of the dysfunctional urothelium that is present in the PBS/IC.
- Adhesion molecules of detrusor muscle cells are influenced by a hypercholesterolemic diet or bladder outlet obstruction in a wistar rat model(2013) PONTES-JUNIOR, Jose; NUNES, Ricardo Luis Vita; REIS, Sabrina Thalita dos; OLIVEIRA, Luiz Carlos N. de; VIANA, Nayara; LEITE, Katia Ramos Moreira; BRUSCHINI, Homero; SROUGI, MiguelBackground: Cell adhesion molecules (CAMs) are essential for maintaining tissue integrity by regulating intercellular and cell to extracellular matrix interactions. Cadherins and catenins are CAMs that are located on the cell membrane and are important for adherens junction (AJ) function. This study aims to verify if hypercholesterolemic diet (HCD) or bladder outlet obstruction (BOO) promotes structural bladder wall modifications specific to alterations in the expression of cadherins and catenins in detrusor muscle cells. Methods: Forty-five 4-week-old female Wistar rats were divided into the following three groups: group 1 was a control group that was fed a normal diet (ND); group 2 was the BOO model and was fed a ND; and group 3 was a control group that was fed a HCD (1.25% cholesterol). Initially, serum cholesterol, LDL cholesterol and body weight were determined. Four weeks later, groups 1 and 3 underwent a sham operation; whereas group 2 underwent a partial BOO procedure that included a suture tied around the urethra. Six weeks later, all rats had their bladders removed, and previous exams were repeated. The expression levels of N-, P-, and E-cadherin, cadherin-11 and alpha-, beta-and gamma-catenins were evaluated by immunohistochemistry with a semiquantitative analysis. Results: Wistar rats fed a HCD (group 3) exhibited a significant increase in LDL cholesterol levels (p=0.041) and body weight (p=0.017) when compared to both groups that were fed a normal diet in a ten-week period. We found higher beta- and gamma-catenin expression in groups 2 and 3 when compared to group 1 (p = 0.042 and p = 0.044, respectively). We also observed Cadherin-11 overexpression in group 3 when compared to groups 1 and 2 (p = 0.002). Conclusions: A HCD in Wistar rats promoted, in addition to higher body weight gain and increased serum LDL cholesterol levels, overexpression of beta- and gamma-catenin in the detrusor muscle cells. Similar finding was observed in the BOO group. Higher Cadherin-11 expression was observed only in the HCD-treated rats. These findings may be associated with bladder dysfunctions that occur under such situations.
conferenceObject ADHESION MOLECULES OF DETRUSOR MUSCLE CELLS ARE INFLUENCED BY A HYPERCHOLESTEROLEMIC DIET OR BLADDER OUTLET OBSTRUCTION IN RAT'S MODELS(2012) PONTES-JUNIOR, Jose; NUNES, Ricardo L. V.; REIS, Sabrina T. dos; TIMOSCZUK, Luciana S.; LEITE, Katia R. M.; BRUSCHINI, Homero; SROUGI, MiguelconferenceObject PERIURETHRAL MUSCLE-DERIVED MONONUCLEAR CELL INJECTION IMPROVES MORPHOLOGICAL RECOVERY OF THE URETHRAL SPHINCTER IN A RAT MODEL OF URINARY INCONTINENCE(2015) TURCO, Marcelo; GOMES, Cristiano; BESSA, Jose; BROLIO, Marina; RODRIGUES, Marcio; SOUZA, Alex; LEITE, Katia; NUNES, Ricardo; BRUSCHINI, Homero; MIGLINO, Maria Angelica; SROUGI, Miguel- Increased detrusor collagen is associated with detrusor overactivity and decreased bladder compliance in men with benign prostatic obstruction(2017) BELLUCCI, Carlos H. S.; RIBEIRO, Wesley de O.; HEMERLY, Thiago S.; BESSA JR., Jose de; ANTUNES, Alberto A.; LEITE, Katia R. M.; BRUSCHINI, Homero; SROUGI, Miguel; GOMES, Cristiano M.Background: This study aimed to investigate the relationship between detrusor collagen content and urodynamic parameters in men with benign prostatic obstruction. Material and methods: Nineteen consecutive patients undergoing open prostatectomy for bladder outlet obstruction (BOO) due to be nign prostatic hyperplasia (BPH) were evaluated. Urodynamic tests were performed in all patients. BOO and detrusor contractility were assessed with the BOO index (BOOI) and the bladder contractility index (BCI), respectively. A bladder fragment was obtained during prostatectomy. Eight cadaveric organ donors composed the control group. Bladder sections were stained with picrosirius red and hematoxylin-eosin. The collagen to smooth muscle ratio (C/M) in the detrusor was measured and its relationship with urodynamic parameters was investigated. Results: Seven (36.8%) patients were operated on due to lower urinary tract symptoms and 12 (63.2%) had urinary retention. The mean prostate volume was 128.6 cm(3) +/- 32.3 cm(3), the mean BOOI was 76.4 +/- 33.0, and the mean BCI was 116.1 +/- 33.7. The mean C/M in BPH patients and controls were 0.43 +/- 0.13 and 0.33 +/- 0.09, respectively (P = 0.042). A negative correlation was shown between C/M and bladder compliance (r = -0.488, P = 0.043). The C/M was increased in BPH patients with detrusor overactivity (DO) compared to those without DO (0.490 +/- 0.110 and 0.360 +/- 0.130, respectively; P = 0.030) and also in patients with urinary retention (P = 0.002). No correlation was shown between C/M and maximum cystometric capacity, BOOI, or BCI. Conclusion: Men with BOO/BPH have increased detrusor collagen content which is associated with decreased bladder compliance, detrusor overactivity, and urinary retention. (C) 2017 Asian Pacific Prostate Society, Published by Elsevier Korea LLC.
conferenceObject DETRUSOR PRESSURES ARE ASSOCIATED WITH COLLAGEN TYPE III EXPRESSION IN THE DETRUSOR OF PATIENTS WITH BENIGN PROSTATIC HYPERPLASIA(2020) BELLUCCI, Carlos; HEMERLY, Thiago; GUIMARAES, Vanessa; VIANA, Nayara; CAMARGO, Gabriel; REIS, Sabrina; BRUSCHINI, Homero; SROUGI, Miguel; LEITE, Katia; GOMES, CristianoconferenceObject EXPRESSION OF HYPOXIA AND FIBROSIS RELATED GENES IN PATIENTS WITH NEUROGENIC LOWER URINARY TRACT DYSFUNCTION UNDERGOING BLADDER AUGMENTATION(2018) HEMERLY, T. S.; BELLUCCI, C. H. S.; JR, J. Bessa; BARBOSA, J. A. B. A.; REIS, S. T. D.; CAMARGO, G. M.; BRUSCHINI, H.; SROUGI, M.; LEITE, K. R.; GOMES, C. M.