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1.
World J Urol ; 42(1): 156, 2024 Mar 14.
Artigo em Inglês | MEDLINE | ID: mdl-38483562

RESUMO

PURPOSE: Androgen deprivation therapy (ADT) is the mainstay approach for prostate cancer (PCa) management. However, the most commonly used ADT modality, gonadotropin-releasing hormone (GnRH) agonists, has been associated with an increased risk of cardiovascular disease (CVD). METHODS: The PCa Cardiovascular (PCCV) Expert Network, consisting of multinational urologists, cardiologists and oncologists with expertise in managing PCa, convened to discuss challenges to routine cardiovascular risk assessment in PCa management, as well as how to mitigate such risks in the current treatment landscape. RESULTS: The experts identified several barriers, including lack of awareness, time constraints, challenges in implementing risk assessment tools and difficulties in establishing multidisciplinary teams that include cardiologists. The experts subsequently provided practical recommendations to improve cardio-oncology care for patients with PCa receiving ADT, such as simplifying cardiovascular risk assessment, individualising treatment based on CVD risk categories, establishing multidisciplinary teams and referral networks and fostering active patient engagement. A streamlined cardiovascular risk-stratification tool and a referral/management guide were developed for seamless integration into urologists' practices and presented herein. The PCCV Expert Network agreed that currently available evidence indicates that GnRH antagonists are associated with a lower risk of CVD than that of GnRH agonists and that GnRH antagonists are preferred for patients with PCa and a high CVD risk. CONCLUSION: In summary, this article provides insights and guidance to improve management for patients with PCa undergoing ADT.


Assuntos
Doenças Cardiovasculares , Neoplasias da Próstata , Masculino , Humanos , Neoplasias da Próstata/tratamento farmacológico , Neoplasias da Próstata/induzido quimicamente , Antagonistas de Androgênios/efeitos adversos , Doenças Cardiovasculares/induzido quimicamente , Doenças Cardiovasculares/epidemiologia , Medição de Risco , Hormônio Liberador de Gonadotropina
2.
BMC Public Health ; 19(1): 211, 2019 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-30786876

RESUMO

BACKGROUND: Vitamin-D deficiency is a universal health problem caused primarily by inadequate exposure to sunlight. This study aimed to assess the vitamin D status and investigate the factors affecting vitamin D distribution among Saudi males. METHODS: A cross-sectional study was conducted at the King Saud University Medical City from December 2015 to August 2016. Saudi males attending the outpatient primary health care clinics were invited to participate in the study. Data were collected on the current and past health status along with biochemical investigations for total 25-hydroxyvitamin D (25OHD), blood sugar, and cholesterol. RESULTS: Majority of the participants (76.1%) had vitamin D deficiency. Blood sugar level, age, and cholesterol level were the most significant factors associated with vitamin D status. The highest percentage of deficiency was observed in the youngest age group (30-40 years). With increasing age, the percentage of deficiency decreased significantly. Those with normal blood sugar and cholesterol level had higher serum vitamin D levels compared to those with diabetes and hypercholesterolemia. CONCLUSIONS: Vitamin D deficiency is still endemic in Saudi Arabia, particularly among younger males and those with diabetes and hypercholesterolemia. Vitamin D screening, supplementations, and vitamin D-fortified foods should be provided especially for these groups.


Assuntos
Deficiência de Vitamina D/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Glicemia , Colesterol/sangue , Estudos Transversais , Diabetes Mellitus/epidemiologia , Humanos , Hipercolesterolemia/epidemiologia , Masculino , Homens , Pessoa de Meia-Idade , Arábia Saudita/epidemiologia , Luz Solar
3.
Urol Ann ; 16(1): 71-74, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38415233

RESUMO

Objectives: The objective of the study was to evaluate hematuria as a diagnostic test for renal and ureteral stones compared with a noncontrast-enhanced computed tomography (CT) scan (gold standard test) in emergency room patients with acute flank pain. Patients and Methods: In total, 604 patients treated in our emergency department from 2006 to 2011, with a history of flank pain and suspected urolithiasis were included in a retrospective review. All patients were evaluated with a noncontrast-enhanced CT scan and urine analysis. Using the noncontrast CT scan as the gold standard for the evaluation of the presence, number, size, and site (renal or ureteral [upper, middle, and lower]) of the stones, we calculated the sensitivity, specificity, and positive and negative predictive values of hematuria for diagnosing both renal and ureteral stones. Results: Urolithiasis was diagnosed in 388 patients (64%) and 216 patients (36%) had no stones on a noncontrast-enhanced CT scan. The sensitivity, specificity, positive predictive value, and negative predictive value for microhematuria were 77%, 33%, 67%, and 45%, respectively. Microhematuria was more common in patients with ureteral stones only (139 patients) and had a sensitivity of 85% compared to patients with renal stones only (32 patients), with a sensitivity of 55% (P < 0.001). There were no significant differences in the specificity or positive or negative predictive values. Conclusion: Although microhematuria is more sensitive to ureteral stones, the absence of microhematuria does not exclude the possibility of urolithiasis and a noncontrast-enhanced CT scan should be the gold standard diagnostic tool.

4.
Apoptosis ; 18(3): 300-14, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23238991

RESUMO

Prostate cancer (PCa) is the most commonly diagnosed cancer in men. The progression and invasion of PCa are normally mediated by the overexpression of chemokine receptors (CKRs) and the interaction between CKRs and their cognate ligands. We recently demonstrated that venom extracted from Walterinnesia aegyptia (WEV) either alone or in combination with silica nanoparticles (WEV+NP) mediated the growth arrest and apoptosis of breast cancer cells. In the present study, we evaluated the impact of WEV alone and WEV+NP on the migration, invasion, proliferation and apoptosis of prostate cancer cells. We found that WEV alone and WEV+NP decreased the viability of all cell types tested (PCa cells isolated from patient samples, PC3 cells and LNCaP cells) using an MTT assay. The IC(50) values were determined to be 10 and 5 µg/mL for WEV alone and WEV+NP, respectively. WEV+NP decreased the surface expression of the CKRs CXCR3, CXCR4, CXCR5 and CXCR6 to a greater extent than WEV alone and subsequently reduced migration and the invasion response of the cells to the cognate ligands of the CKRs (CXCL10, CXCL12, CXCL13 and CXCL16, respectively). Using a CFSE proliferation assay, we found that WEV+NP strongly inhibited epidermal growth factor-mediated PCa cell proliferation. Furthermore, analysis of the cell cycle indicated that WEV+NP strongly altered the cell cycle of PCa cells and enhanced the induction of apoptosis. Finally, we demonstrated that WEV+NP robustly decreased the expression of anti-apoptotic effectors, such as B cell Lymphoma-2 (Bcl-2), B cell Lymphoma-extra large (Bcl-(XL)) and myeloid cell leukemia sequence-1 (Mcl-1), and increased the expression of pro-apoptotic effectors, such as Bcl-2 homologous antagonist/killer (Bak), Bcl-2-associated X protein (Bax) and Bcl-2-interacting mediator of cell death (Bim). WEV+NP also altered the membrane potential of mitochondria in the PCa cells. Our data reveal the potential of nanoparticle-sustained delivery of snake venom as effective treatments for prostate cancer.


Assuntos
Apoptose/efeitos dos fármacos , Venenos Elapídicos/uso terapêutico , Neoplasias da Próstata/tratamento farmacológico , Dióxido de Silício/uso terapêutico , Idoso , Animais , Proteínas Reguladoras de Apoptose/biossíntese , Linhagem Celular Tumoral , Sobrevivência Celular/efeitos dos fármacos , Quimiocinas CXC/farmacologia , Elapidae , Humanos , Masculino , Potencial da Membrana Mitocondrial/efeitos dos fármacos , Pessoa de Meia-Idade , Nanopartículas/uso terapêutico , Invasividade Neoplásica , Neoplasias da Próstata/patologia , Receptores CXCR/biossíntese
5.
Cell Immunol ; 284(1-2): 129-38, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23973876

RESUMO

Multiple myeloma (MM) is a clonal disease of plasma cells that reside in the bone marrow (BM). MM is an incurable disease; thus, screening for novel anti-myeloma drugs remains critically important. We recently described a silica nanoparticle-based snake venom delivery model that targets cancer cells, but not normal cells. Using this model, we demonstrated a strong enhancement of the antitumor activity of snake venom extracted from Walterinnesia aegyptia (WEV) in two breast carcinoma cell lines when the venom was combined with silica nanoparticles (WEV+NP). In the present study, we aimed to delineate the in vivo therapeutic efficacy of WEV+NP in an MM-bearing experimental nude mouse model. We found that treatment with WEV+NP or WEV alone significantly inhibited tumor growth compared to treatment with NP or vehicle. WEV+NP- and WEV-treated cancer cells exhibited marked elevations in oxidative stress and robust reductions in the levels of interleukin-6 (IL-6) and B cell-activating factor (BAFF). WEV+NP also decreased the surface expression of the chemokine receptors CXCR3, CXCR4 and CXCR6 to a greater extent than WEV alone, and WEV+NP subsequently reduced migration in response to the cognate ligands CXCL10, CXCL12 and CXCL16. Furthermore, we found that WEV+NP strongly inhibited insulin-like growth factor 1 (EGF-1)- and IL-6-mediated MM cell proliferation, altered the cell cycle and enhanced the induction of apoptosis of MM cells. In addition, the results of treatment with WEV+NP or WEV alone revealed that the combination of WEV with NP robustly decreased the expression of cyclin D1, Bcl-2 and the phosphorylation of AKT; increased the expression of cyclin B1; altered the mitochondrial membrane potential; increased the activity of caspase-3, -8 and -9; and sensitized MM cells to growth arrest and apoptosis. Our data reveal the therapeutic potential of the nanoparticle-sustained delivery of snake venom to fight cancer cells.


Assuntos
Apoptose/efeitos dos fármacos , Venenos Elapídicos/farmacologia , Mieloma Múltiplo/tratamento farmacológico , Nanopartículas/uso terapêutico , Animais , Apoptose/imunologia , Fator Ativador de Células B/imunologia , Pontos de Checagem do Ciclo Celular/efeitos dos fármacos , Pontos de Checagem do Ciclo Celular/imunologia , Linhagem Celular Tumoral , Proliferação de Células , Elapidae , Citometria de Fluxo , Humanos , Interleucina-6/imunologia , Potencial da Membrana Mitocondrial/efeitos dos fármacos , Potencial da Membrana Mitocondrial/imunologia , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Nus , Terapia de Alvo Molecular , Mieloma Múltiplo/imunologia , Mieloma Múltiplo/patologia , Distribuição Aleatória , Organismos Livres de Patógenos Específicos , Ensaios Antitumorais Modelo de Xenoenxerto
6.
Lipids Health Dis ; 12: 37, 2013 Mar 18.
Artigo em Inglês | MEDLINE | ID: mdl-23506302

RESUMO

BACKGROUND: Epidemiological studies have shown that the offspring of mothers who experience diabetes mellitus during pregnancy are seven times more likely to develop health complications than the offspring of mothers who do not suffer from diabetes during pregnancy. The present study was designed to investigate whether supplementation of streptozotocin (STZ)-induced diabetic pregnant mice with thymoquinone (TQ) during pregnancy and lactation improves the risk of developing diabetic complications acquired by their offspring. METHODS: Three groups of pregnant female mice were used: non-diabetic control dams (CD), diabetic dams (DD), and diabetic dams supplemented with TQ (DD + TQ) during pregnancy and lactation (n = 10 female mice in each group). RESULTS: Our data demonstrated a marked decrease in the number of neonates born to DD, and these neonates showed a marked increase in their mean body weight (macrosomic pups) compared to those born to CD and DD + TQ. The induction of diabetes during pregnancy and lactation resulted in macrosomic pups with several postpartum complications, such as a marked increase in their levels of blood glucose, free radicals, plasma pro-inflammatory cytokines (IL-1ß, IL-6, and TNF-α), and lipids, and a tendency toward abnormal obesity compared to the offspring of CD. By contrast, macrosomic offspring born to DD exhibited a marked reduction in plasma cytokine levels (IL-2, -4 and -7), an obvious reduction in the number of circulating lymphocytes, decreased proliferation of superantigen (SEB)-stimulated lymphocytes and aberrant AKT phosphorylation. Interestingly, the supplementation of DD with TQ during pregnancy and lactation had an obvious and significant effect on the number and mean body weight of neonates. Furthermore, TQ significantly restored the levels of blood glucose, insulin, free radicals, plasma cytokines, and lipids as well as lymphocyte proliferation in the offspring. CONCLUSIONS: Our data suggest that the nutritional supplementation of DD with the natural antioxidant TQ during pregnancy and lactation protects their offspring from developing diabetic complications and preserves an efficient lymphocyte immune response later in life.


Assuntos
Antioxidantes/farmacologia , Benzoquinonas/farmacologia , Diabetes Mellitus Experimental/prevenção & controle , Hipoglicemiantes/farmacologia , Metabolismo dos Lipídeos/efeitos dos fármacos , Obesidade/prevenção & controle , Transdução de Sinais/efeitos dos fármacos , Administração Oral , Animais , Glicemia/metabolismo , Peso Corporal/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Citocinas/sangue , Citocinas/imunologia , Diabetes Mellitus Experimental/imunologia , Diabetes Mellitus Experimental/metabolismo , Diabetes Mellitus Experimental/patologia , Feminino , Radicais Livres/antagonistas & inibidores , Radicais Livres/metabolismo , Regulação da Expressão Gênica/efeitos dos fármacos , Tamanho da Ninhada de Vivíparos/efeitos dos fármacos , Linfócitos/efeitos dos fármacos , Linfócitos/imunologia , Linfócitos/patologia , Camundongos , Obesidade/imunologia , Obesidade/metabolismo , Obesidade/patologia , Fosfatidilinositol 3-Quinases/genética , Fosfatidilinositol 3-Quinases/metabolismo , Gravidez , Proteínas Proto-Oncogênicas c-akt/genética , Proteínas Proto-Oncogênicas c-akt/metabolismo
7.
Urol Ann ; 15(1): 54-59, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37006206

RESUMO

Background: False-positive (FP) multiparametric magnetic resonance imaging (MPMRI) obscures and swift needless biopsies in men with a high prostate-specific antigen. Materials and Methods: This was a retrospective study, in which all patients who had been exposed to consecutive MP-MRI of the prostate combined with transrectal ultrasound-guided-magnetic resonance imaging fusion-guided prostate biopsy between 2017 and 2020 were involved in the study. The FP was measured as the number of biopsies that did not encompass prostate cancer divided by the whole number of biopsies. Results: The percentage of FP cases was 51.1%, the highest percentage was found in Prostate Imaging-Reporting and Data System (PI-RADs) 3 (37.7%) and the lowest was detected in PI-RAD 5 (14.5%). Those with FP biopsies are younger, and their total prostate antigen (PSA) and PSA density (PSAD) are significantly lesser. The area under the curve PSAD, age, and total PSA are 0.76, 0.74, and 0.69, respectively. An optimum PSAD value of 0.135 was chosen as a cutoff because it showed the highest sum of sensitivity and specificity, 68% and 69%, respectively. Conclusion: FP results of mpMRI were detected in more than half of our sample, more than one-third were presented in Pi-RAD3, improved imaging techniques to decrease FP rates are highly needed.

8.
Saudi J Med Med Sci ; 11(4): 299-304, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37970462

RESUMO

Background: Prostate cancer screening with prostate-specific antigen (PSA) can result in unnecessary biopsies and overdiagnosis. Alternately, PSA density (PSAD) calculation may help support biopsy decisions; however, evidence of its usefulness is not concrete. Objective: To evaluate the predictive value of PSAD for clinically significant prostate cancer detection by systematic and MRI-targeted biopsies. Methods: This prospective study was conducted at two tertiary hospitals in Riyadh, Saudi Arabia, between December 2018 and November 2021. Patients suspected of prostate cancer were subjected to multi-parametric MRI, and for those with positive findings, systematic and targeted biopsies were performed. Clinically non-significant and significant prostate cancer cases were classified based on histopathology-defined ISUP grade or Gleason score. The PSAD was measured using the prostate volume determined by the MRI and categorized into ≤0.15, 0.16-0.20, and >0.20 ng/ml2 subgroups. Results: Systematic and targeted biopsies were carried out for 284 patients. The discriminant ability of PSAD is higher in MRI-targeted biopsy compared with systematic biopsy (AUC: 0.77 vs. 0.73). The highest sensitivity (97%) and specificity (87%) were detected at 0.07 ng/ml2 in targeted biopsy. More than half of the clinically significant cases were detected in the >0.2 ng/ml2 PSAD category (systematic: 52.4%; targeted: 51.1%). The CHAID methodology found that the probability of having clinically significant cancer (CSC) in patients with PSAD >0.15 ng/ml2 was more than threefold than that in patients with PSAD ≤0.15 ng/ml2 (64% vs. 20.2%). When considered by age, in PSAD ≤0.15 ng/ml2 subgroup, the percentage of CSC detection rate increased from 20.2% to 24.6% in patients aged ≥60 years. Conclusion: PSAD has good discriminant power for predicting clinically significant prostate cancer. A cutoff of 0.07 ng/ml2 should be adopted, but should be interpreted with caution and by considering other parameters such as age.

9.
Cureus ; 15(9): e44562, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37790050

RESUMO

INTRODUCTION: The current practice of offering fertility preservation (FP) counseling and treatment has become one of the focal points in patient care throughout cancer treatment. The turning point was the approval of the Council of Senior Religious Scholars four years ago to freeze tissues from the ovarian membrane, the entire ovary, and the eggs for later use in reproduction to preserve the offspring. Thus, we aimed to assess any development in oncologists' knowledge, attitude, and referral practices regarding FP in Saudi Arabia. METHODS: This is a cross-sectional survey using a self-administered questionnaire. We assessed oncologists' opinions on the importance of FP, their perception of the patient's preferences, and factors to consider when discussing the subject. Then, we assessed the knowledge and referral practices, including the timing of referral before starting cancer treatment. RESULTS: Most oncologists showed good knowledge and positive attitudes toward FP; however, their referral practices could be better. Most were familiar with FP options. The most significant factors influencing the oncologist-patient FP discussion were the number of existing children, marital status, cost, and type of cancer (96.6%, 76.7%, 65.7%, and 58.9%, respectively). CONCLUSIONS: There is a significant improvement in the knowledge and attitude of oncologists toward FP. However, patients' counseling and referral to fertility services still need to be improved. There is a shortfall in the clinical practice guidelines for FP in cancer patients in Saudi Arabia. The implementation of clinical practice guidelines would enhance FP. However, patients' counseling and referral to fertility services still need to be improved. The lack of proper guidelines on FP is affecting oncologists' practice.

10.
BMC Immunol ; 13: 32, 2012 Jun 18.
Artigo em Inglês | MEDLINE | ID: mdl-22708778

RESUMO

BACKGROUND: Continuous diabetes-associated complications are a major source of immune system exhaustion and an increased incidence of infection. Diabetes can cause poor circulation in the feet, increasing the likelihood of ulcers forming when the skin is damaged and slowing the healing of the ulcers. Whey proteins (WPs) enhance immunity during childhood and have a protective effect on some immune disorders. Therefore, in this study, we investigated the effects of camel WP on the healing and closure of diabetic wounds in a streptozotocin (STZ)-induced type I diabetic mouse model. RESULTS: Diabetic mice exhibited delayed wound closure characterized by a significant decrease in an anti-inflammatory cytokine (namely, IL-10) and a prolonged elevation of the levels of inflammatory cytokines (TNF-α, IL-1ß and IL-6) in wound tissue. Moreover, aberrant expression of chemokines that regulate wound healing (MIP-1α, MIP-2, KC and CX3CL1) and growth factors (TGF-ß) were observed in the wound tissue of diabetic mice compared with control nondiabetic mice. Interestingly, compared with untreated diabetic mice, supplementation with WP significantly accelerated the closure of diabetic wounds by limiting inflammatory stimuli via the restoration of normal IL-10, TNF-α, IL-1ß and IL-6 levels. Most importantly, the supplementation of diabetic mice with WP significantly modulated the expression of MIP-1α, MIP-2, KC, CX3CL1 and TGF-ß in wound tissue compared with untreated diabetic mice. CONCLUSION: Our data demonstrate the benefits of WP supplementation for improving the healing and closure of diabetic wounds and restoring the immune response in diabetic mice.


Assuntos
Diabetes Mellitus Experimental/dietoterapia , Diabetes Mellitus Tipo 1/dietoterapia , Suplementos Nutricionais , Proteínas do Leite/uso terapêutico , Cicatrização/fisiologia , Animais , Biomarcadores/metabolismo , Quimiocina CCL3/metabolismo , Quimiocina CX3CL1/metabolismo , Quimiocina CXCL1/metabolismo , Quimiocina CXCL2/metabolismo , Diabetes Mellitus Experimental/fisiopatologia , Diabetes Mellitus Tipo 1/fisiopatologia , Masculino , Camundongos , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Fator de Crescimento Transformador beta/metabolismo , Resultado do Tratamento , Proteínas do Soro do Leite
11.
Cell Physiol Biochem ; 30(3): 653-65, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22854437

RESUMO

We recently demonstrated that the snake venom extracted from Walterinnesia aegyptia (WEV) either alone or combined with silica nanoparticles (WEV+NP) enhanced the proliferation of mice immune cells and simultaneously decreased the proliferation of human breast carcinoma cell line (MDA-MB-231). However, the molecular mechanism of how this venom induced growth arrest of breast cancer cells has not been studied. In this context, we extended our study to evaluate the anti-tumor potential of WEV and WEV+NP on the human breast carcinoma cell lines MDA-MB-231 and MCF-7, as well as their effects on non-tumorigenic normal breast epithelial cells (MCF-10). The IC(50 )values of WEV alone and WEV+NP in these cell lines were determined to be 50 ng/ml and 20 ng/ml, respectively. Interestingly, at these concentrations, the venom did not affect the viability of normal MCF-10 cells and treatment of all these cell lines with NP alone did not affect their viability. Using annexin-V binding assay followed by flow cytometry analysis, we found that combination of WEV with NP strongly induced apoptosis in MDA-MB-231 and MCF-7 cancer cells without significant effect on normal MCF-10 cells. Furthermore, we found that WEV+NP decreased the expression of Bcl2 and enhanced the activation of caspase 3 in MDA-MB-231 and MCF-7 cells. Most importantly, WEV+NP-treated breast cancer cells, but not normal MCF-10 cells, exhibited a significant (P<0.05) reduction in actin polymerization and cytoskeletal rearrangement in response to CXCL12. Our data reveal biological effects of WEV or WEV+NP and the underlying mechanisms to fight breast cancer cells.


Assuntos
Apoptose/efeitos dos fármacos , Caspase 3/metabolismo , Venenos Elapídicos/toxicidade , Nanopartículas/toxicidade , Proteínas Proto-Oncogênicas c-bcl-2/metabolismo , Dióxido de Silício/química , Actinas/metabolismo , Animais , Linhagem Celular , Proliferação de Células/efeitos dos fármacos , Quimiocina CXCL12/metabolismo , Citoesqueleto/efeitos dos fármacos , Elapidae/metabolismo , Humanos , Células MCF-7 , Camundongos , Nanopartículas/química
12.
J Urol ; 187(4): 1259-65, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22335870

RESUMO

PURPOSE: Radical prostatectomy, external beam radiotherapy and brachytherapy are accepted treatments for localized prostate cancer. However, it is unknown if survival differences exist among treatments. We analyzed the survival of patients treated with these modalities according to contemporary standards. MATERIALS AND METHODS: A total of 10,429 consecutive patients with localized prostate cancer treated with radical prostatectomy (6,485), external beam radiotherapy (2,264) or brachytherapy (1,680) were identified. Multivariable regression analyses were used to model the disease (biopsy grade, clinical stage, prostate specific antigen) and patient specific (age, ethnicity, comorbidity) parameters for overall survival and prostate cancer specific mortality. Propensity score analysis was used to adjust for differences in observed background characteristics. RESULTS: The adjusted 10-year overall survival after radical prostatectomy, external beam radiotherapy and brachytherapy was 88.9%, 82.6% and 81.7%, respectively. Adjusted 10-year prostate cancer specific mortality was 1.8%, 2.9% and 2.3%, respectively. Using propensity score analysis, external beam radiotherapy was associated with decreased overall survival (HR 1.6, 95% CI 1.4-1.9, p<0.001) and increased prostate cancer specific mortality (HR 1.5, 95% CI 1.0-2.3, p=0.041) compared to radical prostatectomy. Brachytherapy was associated with decreased overall survival (HR 1.7, 95% CI 1.4-2.1, p<0.001) but not prostate cancer specific mortality (HR 1.3, 95% CI 0.7-2.4, p=0.5) compared to radical prostatectomy. CONCLUSIONS: After adjusting for major confounders, radical prostatectomy was associated with a small but statistically significant improvement in overall and cancer specific survival. These survival differences may arise from an imbalance of confounders, differences in treatment related mortality and/or improved cancer control when radical prostatectomy is performed as initial therapy.


Assuntos
Neoplasias da Próstata/radioterapia , Neoplasias da Próstata/cirurgia , Idoso , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Antígeno Prostático Específico/sangue , Prostatectomia , Neoplasias da Próstata/sangue , Neoplasias da Próstata/mortalidade , Taxa de Sobrevida
13.
J Reprod Med ; 57(9-10): 431-4, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-23091992

RESUMO

OBJECTIVE: To study and report on the attitudes and clinical practices of oncologists regarding fertility cryopreservation for female cancer patients. STUDY DESIGN: Data was collected using a self administered questionnaire distributed to oncologists in different institutions in Riyadh, Saudi Arabia, during the period May through August 2010. The questionnaire covered their attitudes and clinical practices regarding fertility cryopreservation for female cancer patients. RESULTS: Almost half of the respondents (45.6%) were not familiar with any female fertility preservation options. Although most of the respondents had a positive attitude toward the topic, their referral practice was very poor. About three-quarters (76%) perceived that fertility preservation was very important, and 90% thought that patients would benefit from referral to an infertility specialist for counseling, yet 80% believed that cryopreservation was a complicated process. Almost half of respondents (55.3%) mentioned that they always discuss future fertility with their patients. The most prominent reasons for not discussing this issue were the emergent need to start therapy (50.5%) and the concern about the well-being of future children (34.5%). The majority (86.4%) did not refer their cancer patients to an infertility specialist. CONCLUSION: Oncologists' knowledge about female cryopreservation was lacking, and their attitudes and clinical practice on the topic needed enhancement.


Assuntos
Atitude do Pessoal de Saúde , Criopreservação , Preservação da Fertilidade , Neoplasias/terapia , Padrões de Prática Médica/estatística & dados numéricos , Adulto , Competência Clínica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/complicações , Oócitos , Ovário , Arábia Saudita , Inquéritos e Questionários
14.
Asian Pac J Cancer Prev ; 23(3): 1041-1045, 2022 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-35345378

RESUMO

OBJECTIVES: To explore the cancer prevention-related nutrition knowledge of primary health care physicians towards nutrition and its relation to the development of cancer. MATERIALS AND METHODS: a cross-sectional study was conducted among family physicians in Riyadh, between November 2019 and April 2020. The participants in the current study were surveyed using a self-administered questionnaire. The questionnaire included socio-economic data and data related to the association between nutrition and cancer. RESULTS: The mean correct knowledge score for physicians is good but less than expected (26.5+5.8) 73.6%. Multiple regression revealed that age, position, and nationality to be significantly associated with knowledge of cancer prevention (P<0.05) among physicians. CONCLUSIONS: Primary care physicians have good knowledge about the relation between nutrition and cancer but not sufficient, they should have continuous nutrition educational training programs to ensure safe and sound nutritional advice to patients and for the public about the relation of nutrition and cancer.


Assuntos
Neoplasias , Médicos , Estudos Transversais , Humanos , Conhecimento , Neoplasias/etiologia , Neoplasias/prevenção & controle , Atenção Primária à Saúde
15.
J Urol ; 185(3): 869-75, 2011 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-21239008

RESUMO

PURPOSE: Long-term prostate cancer specific mortality after radical prostatectomy is poorly defined in the era of widespread screening. An understanding of the treated natural history of screen detected cancers and the pathological risk factors for prostate cancer specific mortality are needed for treatment decision making. MATERIALS AND METHODS: Using Fine and Gray competing risk regression analysis we modeled clinical and pathological data, and followup information on 11,521 patients treated with radical prostatectomy at a total of 4 academic centers from 1987 to 2005 to predict prostate cancer specific mortality. The model was validated on 12,389 patients treated at a separate institution during the same period. Median followup in the modeling and validation cohorts was 56 and 96 months, respectively. RESULTS: The overall 15-year prostate cancer specific mortality rate was 7%. Primary and secondary Gleason grade 4-5 (each p<0.001), seminal vesicle invasion (p<0.001) and surgery year (p=0.002) were significant predictors of prostate cancer specific mortality. A nomogram predicting 15-year prostate cancer specific mortality based on standard pathological parameters was accurate and discriminating with an externally validated concordance index of 0.92. When stratified by patient age at diagnosis, the 15-year prostate cancer specific mortality rate for pathological Gleason score 6 or less, 3+4, 4+3 and 8-10 was 0.2% to 1.2%, 4.2% to 6.5%, 6.6% to 11% and 26% to 37%, respectively. The 15-year prostate cancer specific mortality risk was 0.8% to 1.5%, 2.9% to 10%, 15% to 27% and 22% to 30% for organ confined cancer, extraprostatic extension, seminal vesicle invasion and lymph node metastasis, respectively. Only 3 of 9,557 patients with organ confined, pathological Gleason score 6 or less cancer died of prostate cancer. CONCLUSIONS: Poorly differentiated cancer and seminal vesicle invasion are the prime determinants of prostate cancer specific mortality after radical prostatectomy. The prostate cancer specific mortality risk can be predicted with remarkable accuracy after the pathological features of prostate cancer are known.


Assuntos
Nomogramas , Prostatectomia , Neoplasias da Próstata/mortalidade , Neoplasias da Próstata/cirurgia , Idoso , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Fatores de Tempo
16.
Aging Male ; 14(1): 33-6, 2011 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20828246

RESUMO

AIM: To develop and to validate an Arabic Aging Male Symptoms (AMS) tool and to clinically assess patients with hypogonadism after hormonal treatment. METHODS: The tool was translated into Arabic and tested on 15 Saudi men. During a period of 9 months all males presented to the andrology clinic of the main University Hospital, King Saud University, Saudi Arabia with signs and symptoms of hypogonadism, were included in the study. Arabic AMS scale was applied in the base line visit, then 12 weeks after treatment. Testosterone was monitored before treatment, 4 weeks and after 12 weeks. RESULTS: Ninety-two subjects were included, Cronbach's α of 0.91 showed a very good internal consistency of the Arabic AMS questionnaire. The corresponding α for the subscales were 0.83, 0.84 and 0.73. There was a significant improvement in the mean level of TT after hormonal therapy (HT), this was reflected on the mean differences of improvement in the total Arabic AMS scores and subscales scores after HT, ranged from 31 to 35%. CONCLUSION: The present study revealed a significant association between testosterone levels and AMS tool manifested by a its good ability to measure the effect of treatment on quality of life for patients with hypogonadism.


Assuntos
Envelhecimento , Androgênios/sangue , Hipogonadismo/diagnóstico , Saúde do Homem , Qualidade de Vida/psicologia , Inquéritos e Questionários/normas , Testosterona/sangue , Adulto , Fatores Etários , Idoso , Indicadores Básicos de Saúde , Humanos , Hipogonadismo/sangue , Hipogonadismo/epidemiologia , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Arábia Saudita/epidemiologia , Tradução
17.
Urol Res ; 39(5): 385-8, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21461963

RESUMO

Ureteral stones disease is among the most painful and prevalent among urologic disorders that can substantially impact health-related quality of life (HRQoL), particularly in patients with a history of recurrent stones. The aim of the study is to assess the QoL in patients with ureteral calculi after surgical intervention and identifying the most significant factors that could impact their QoL. The target population included two groups: post-lithotripsy patients and comparator group comprising healthy individuals selected from the general population. Both groups were matched for age and gender. The study continued through a period of 9 months. An observation period of 4-10 months following the last surgical intervention was applied before interviewing patients. Information regarding socio-demographics, medical data and presence of co-morbidities were recorded. The Medical Outcome Study Short-Form 36-item survey (SF-36) was used to assess HRQoL for both groups. Based on the SF-36 questionnaire, there were no significant differences between patients and healthy volunteers in the mean scores for eight of the HRQoL domains, except for pain and social functioning subscales. Patient's age, distal ureteral stones and ureteral stent, in addition to DM and low back pain appeared to significantly affect the HRQoL of patients. In conclusion, the promising end point in the management of urolithiasis is improvement of HRQoL. The results of the current study support the notion that urinary stone disease is not a life threatening disease and patients can return to normal life after surgical intervention. Prospective studies are warranted for elucidating the factors influencing HRQoL in ureteral stone patients to optimize patient care.


Assuntos
Cálculos Ureterais/fisiopatologia , Cálculos Ureterais/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Feminino , Humanos , Dor Lombar/fisiopatologia , Masculino , Pessoa de Meia-Idade , Qualidade de Vida , Recidiva , Stents , Inquéritos e Questionários , Cálculos Ureterais/psicologia , Adulto Jovem
18.
J Pediatr Hematol Oncol ; 33(3): 203-7, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21336166

RESUMO

Cancer is a life-threatening diagnosis. Fortunately, life-saving treatments are available to increase the chance of survival in many patients. Yet, many of these treatments are damaging to the reproductive organs and the patients' fertility. A cross-sectional study addressing the knowledge and practices of oncologists toward fertility preservation for male and female patients with cancer was conducted in Saudi Arabia. In 3 different regions of the country, oncologists were invited to participate in the study, through a self-administered questionnaire which was handed to them inquiring about their knowledge, attitude, and referral practices for sperm cryopreservation. Only one-half knew about intracytoplasmic sperm injection, oncologists rated their perception of the importance of cryopreservation as 7.8 ± 1.8. Their referral practice was very poor; less than 20% refer their patients to a specialist. Factors that were considered important to start discussion of cryopreservation were type of cancer, age of patient, number of children, marital status, and cost. Religion was not deemed as important as was anticipated. With regards to female fertility preservation, oncologists showed a positive attitude as revealed from their positive perception, however, their referral practices was very poor. Several gaps were present in the knowledge of oncologists, which could influence their attitude and in turn was reflected on their poor practice. Future training session should be organized to the oncologists for increasing their knowledge and enhancing their attitude.


Assuntos
Atitude do Pessoal de Saúde , Fertilidade , Conhecimentos, Atitudes e Prática em Saúde , Oncologia , Neoplasias/fisiopatologia , Adulto , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Injeções de Esperma Intracitoplásmicas
19.
Prostate Int ; 9(3): 140-144, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34692586

RESUMO

BACKGROUND: Some men are subjected to multiple repeated biopsies because of ongoing suspicion of prostate cancer, which might subject them to complications. The aim of the study was to determine the diagnostic accuracy of magnetic resonance imaging (MRI)/target fusion-guided biopsy in comparison with systematic biopsy in our low prevalence prostate cancer population, in terms of validity measure, case detection rate, and detection of clinically significant cancer. METHODS: This is a retrospective cohort study. All consecutive patients who met the inclusion criteria (all men with persistent high prostate-specific antigen levels >4 ng/ml and/or subnormal finding in direct rectal examination, with suspicious regions identified on prebiopsy MRI) were subjected to transrectal MRI/ultrasound fusion-guided biopsy. RESULTS: A total of 165 cases met the inclusion criteria and were included in the study. The cancer detection rate (CDR) of target biopsy was significantly higher than that of standard biopsy (27.9% vs 14%, respectively), and 25 cases (52%) were missed by standard strategy and correctly classified by multiparametric MRI with targeted biopsy (MRI-TB). On the other hand, only 2 cases (4.3%) were misclassified by MRI-TB, and one of them was clinically significant. There was an exact agreement between the 2 strategies in 15 (31%) cases. Targeted biopsy diagnosed 41.5% more high-risk cancers vs systematic biopsy (41.6% vs 6.2%, P < .001). The difference between sensitivity, specificity, and negative predictive value of MRI-TG varies between 80% and 98%. CONCLUSION: The CDR of prostate cancer in general and clinically significant cancer, in specific, is significantly higher with MRI-TG modality than with systematic modality. Yet, MRI-TG biopsy still misses some men with clinically significant prostate cancer. Hence, the addition of a 12-core biopsy is required to evade missing cases of clinically significant and insignificant cancer.

20.
Health Qual Life Outcomes ; 8: 119, 2010 Oct 19.
Artigo em Inglês | MEDLINE | ID: mdl-20959005

RESUMO

BACKGROUND: This study was designed to evaluate the health-related quality of life (HRQOL) of patients who had undergone lithotripsy for treatment of urinary stones and to identify factors that significantly affect the HRQOL of these patients. METHODS: A comparative cross-sectional study was performed at the main university and main Ministry of health hospitals in Riyadh, Saudi Arabia. All patients admitted to the urology service and who underwent lithotripsy for urinary stones during a 9-month period were included in the study. An observation period of 3-15 months following the last treatment was allowed before patients completed the QOL questionnaire. Information on socio-demographic, and medical characteristics, and number and type of lithotripsies were collected. The Medical Outcome Study Short-Form 36-item survey (SF-36) was used to assess HRQoL. For comparison, the HRQoL in an equal number of healthy individuals was investigated; multivariate analysis of variance was used for comparisons between groups. RESULTS: Compared with healthy subjects, lithotripsy patients had significantly higher mean scores in the different subscales of the SF-36 questionnaire such as physical functioning, vitality, role-physical, role-emotional and mental health, indicating a better HRQOL. Compared with patients who underwent ureteroscopic or extracorporeal shock-wave lithotripsies, those who underwent percutaneous lithotripsy had significantly worse mean scores for all the SF-36 scales, except for body pain. Factors impacting HRQOL of the patients were age, obesity, diabetes mellitus, and stone characteristics such as localization (in the kidney) and recurrence (multiple lithotripsies). CONCLUSIONS: Post-lithotripsy, patients have a favorable HRQOL compared with healthy volunteers. Further prospective studies are warranted to confirm these results owing to the inherent limitations of the cross-sectional design and backward analysis of this study.


Assuntos
Nível de Saúde , Litotripsia , Qualidade de Vida/psicologia , Cálculos Urinários/terapia , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Avaliação de Resultados em Cuidados de Saúde/estatística & dados numéricos , Psicometria , Classe Social , Inquéritos e Questionários
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