Author Interviews, Urology / 21.05.2015

Medicalresearch.com Interview with: Ross Anderson M.D.,M.C.R. Allina Health clinics and Jim Hotaling M.D.,M.S.,F.E.C.S.M. Utah Center for Reproductive Medicine Salt Lake City, UT 84108 MedicalResearch: What is the background for this study? What are the main findings? Dr. Anderson: There is a growing trend of delayed marriage and childbearing, particularly into the third and fourth decade of life. Advanced maternal age is well recognized as a risk factor for chromosomal abnormalities and perinatal complications, but there is also growing interest in the impact of advanced paternal age. Multiple studies have demonstrated that as men age their sperm quality and ability to have children decreases. We were interested in how the age of the parents and the age of the grandparents at the time of conception can affect a man’s sperm quality. We hypothesized that men with older parents and grandparents at the time of conception would have a linear decrease in the quality of their sperm. We used Utah’s two largest andrology lab’s semen analyses and these men were linked to the Utah Population Database. The Utah Population Database allows us access to birth certificate data and pedigree data going back to the late 1800s. With this we can determine the age of the parents and grandparents at the time they had each subsequent generation. We found that the age of the parents did not influence a man’s semen concentration, motility, or total sperm count. Interestingly, the age of the paternal grandfather was associated with an increased risk of poor semen concentration. For instance, if a grandfather was older than 45 year of age at the time of conception of the father, there is a 39% chance a man’s semen concentration would be considered low according to the World Health Organization (less than 15 million per milliliter). (more…)
Author Interviews, Testosterone, Urology / 18.05.2015

Ranjith Ramasamy MD Assistant Professor of Urology University of MiamiMedicalResearch.com Interview with: Ranjith Ramasamy MD Assistant Professor of Urology University of Miami Medical Research: What is the background for this study? Dr. Ramasamy: The association between testosterone supplementation therapy (TST) and thrombotic risk in elderly men remains controversial. We evaluated the prevalence of thrombotic events and all-cause mortality in men older than 65 years with hypogonadism treated with testosterone therapy. We compared men treated with testosterone to an age and comorbidity matched cohort of hypogonadal men not treated with testosterone supplementation therapy. Medical Research: What are the main findings? Dr. Ramasamy: No man who received testosterone supplementation therapy died, whereas 6 hypogonadal men who did not receive TST died (p=0.007). There were 4 thrombotic events (1 MI - myocardial infarction, 2 CVA/TIA - stroke, 1 PE - pulmonary embolism) in men who received testosterone supplementation therapy compared to 1 event (CVA/TIA) among men who did not receive TST (p = 0.8). All the events (except one death which took place at 6 months of follow–up) occurred 2 years or more after follow–up. Strengths of the study include long follow–up (>3 years), availability of serum testosterone levels before and after therapy and of a control group (hypogonadal men not treated with TST) for comparison. Limitations included retrospective study design, and a small sample size. (more…)
Author Interviews, Baylor College of Medicine Houston, Sleep Disorders, Urology / 18.05.2015

MedicalResearch.com Interview with: Alexander W. Pastuszak, MD, PhD Male Reproductive Medicine and Surgery Scott Department of Urology Jason Malcolm Scovell Medical Student, Ofc SA-BCM Students Baylor College of Medicine Houston, TX Medical Research: What is the background for this study? What are the main findings? Response: Sleep quality is an important component of overall health, and can both exacerbate health issues and be impaired by health problems. Shift workers, primarily those who do not work standard daylight shifts, are prone to sleep problems, a significant concern in light of the fact that up to 25% of the U.S. workforce is comprised of shift workers. As men age, the prevalence of Lower Urinary Tract Symptoms (LUTS), which include urgency, frequency, waking up at night to urinate, and difficulties with urination, increases.  Unsurprisingly, men with LUTS report poor sleep in part due to awakening repeatedly during the night. We studied a group of male shift workers, who we believe to be an ‘at-risk’ population, and found that not only do the men who report worse sleep quality have worse Lower Urinary Tract Symptoms, but also men who report difficulty falling asleep have more severe LUTS than those who do not. This latter point is significant, given that most men with LUTS can fall asleep without difficulty, but then awaken repeatedly throughout the night, and suggests that sleep difficulties in this population may be resulting in Lower Urinary Tract Symptoms rather than LUTS exclusively resulting in sleep difficulties. (more…)
Author Interviews, Prostate Cancer / 17.05.2015

MedicalResearch.com Interview with: Michael Fenstermaker MD NYU School of Medicine | MD, MS | Class of 2015 Northwestern University | BA | Biochemistry, Psychology Medical Research: What is the background for this study? What are the main findings? Dr. Fenstermaker: The benefits of using prostate-specific antigen (PSA) testing to screen for prostate cancer are uncertain. In response to this, many medical societies have recently scaled back their recommendations for PSA screening.  One common thread among these groups is that shared decision-making should guide whether or not men get tested. Shared decision-making is a process by which physicians and patients work together to make a medical decision that aligns with the patient’s values and follows the best available medical evidence. Several studies have shown a decline in PSA testing since new guidelines have been published.  While a decrease in screening is not necessarily problematic itself, it could be an issue if this is the result of fewer physicians discussing screening with their patients. Some experts worry that disparities in screening could develop, such that only informed patients go on to speak with their physicians and receive PSA testing.  By analyzing data from a national survey, we had the chance to investigate just how much men know about the controversies leading to these guidelines changes and whether this knowledge influences PSA usage. Our findings show that the majority of U.S. males of screening age report that they were not informed of many key facts important to understanding the risks and controversies surrounding PSA testing.  Of particular concern, certain vulnerable populations, such as those without regular healthcare providers were less likely to be informed of these facts. Surprisingly, those men who had more awareness of the controversies about PSA testing were more likely to undergo testing.   (more…)
Prostate Cancer / 17.05.2015

Ryan P. Terlecki, MD, FACS Director, Men's Health Clinic Director, Fellowship in Urologic Reconstruction, Prosthetic Urology, and Infertility Director, Medical Student Education Associate Professor of Urology Wake Forest Baptist HealthMedicalResearch.com Interview with: Ryan P. Terlecki, MD, FACS Director, Men's Health Clinic Director, Fellowship in Urologic Reconstruction, Prosthetic Urology, and Infertility Director, Medical Student Education Associate Professor of Urology Wake Forest Baptist Health Medical Research: What is the background for this study? What are the main findings? Response: In recent years, the value of generalized screening for prostate cancer (PCa) in adult men has been questioned, with several national associations recommending against the practice in men without recognized risk factors. Screening, when performed, often consists of a blood test for prostate specific antigen (PSA) and a digital rectal exam (DRE). Once PSA was developed as a screening tool, we witnessed a stage migration such that observing a locally advanced cancer that would be initially found via DRE became a rarer event. In practice, we have noticed that some men will actually avoid a clinic visit because of the DRE. Additionally, the digital rectal exam has limitations and is often poorly reproducible among providers. We chose to review a large body of data to shed some light on the utility of the digital rectal exam exam. We analyzed data from the Prostate, Lung, Colorectal, and Ovarian Cancer (PLCO) Screening trial, to determine the ability of the digital rectal exam to result in a diagnosis of clinically significant PCa in the setting of a normal PSA. We found that if PSA is normal and digital rectal exam is considered abnormal, the chance of detecting a clinically significant cancer is similar to a situation of normal DRE and normal PSA. Also, 1,372 men would need to undergo a digital rectal exam to identify a single case of clinically significant prostate cancer not detected by PSA. (more…)
Author Interviews, Endocrinology, Testosterone, University of Michigan / 17.05.2015

MedicalResearch.com Interview with: Jim Dupree, MD, MPH Assistant Professor Department of Urology, Division of Andrology University of MichiganMedicalResearch.com Interview with: Jim Dupree, MD, MPH Assistant Professor Department of Urology, Division of Andrology University of Michigan Medical Research: What is the background for this study? What are the main findings? Dr. Dupree: There are increasing discussions in the United States about testosterone therapy and men with clinical hypogonadism (or low testosterone).  Yet, to date, there have not been any nationally-representative studies of the prevalence of low testosterone in the United States.  Using a validated national health examination program from the CDC, we found that the national prevalence of low testosterone (serum testosterone ≤ 300 ng/dL) in adult males in the US was 28.9%.  Among other factors, men who were older, had a higher body mass index (BMI), or had a larger waist circumference were at risk for having lower testosterone levels. (more…)