Childhood Onset of Puberty and Parental Height Linked

MedicalResearch.com Interview with:

Yehuda Limony, MD, MScPediatric Endocrinology UnitFaculty of Health SciencesBen-Gurion University of the NegevClalit Health ServicesBeer-Sheva, Israel 

Dr. Limony

Yehuda Limony, MD, MSc
Pediatric Endocrinology Unit
Faculty of Health Sciences
Ben-Gurion University of the Negev
Clalit Health Services
Beer-Sheva, Israel 

MedicalResearch.com: What is the background for this study?

Response: The variability of the onset age of puberty is the subject of many studies in numerous disciplines; nonetheless, the timing of puberty remains an enigma. The conventional paradigm is that the time of onset of puberty is genetically determined even though genome-wide association studies explain only a very low percentage of the physiologic variability. It is commonly believed, therefore, that many environmental factors interfere with the genetics of timing of puberty.

On the other hand, children grow toward an adult height that is the standardized average of parents’ height called “target height”. That is why children are usually similar in height to parents. This targeted growth process is evident especially in children whose height percentile in childhood is different from their target height percentile (we called this difference the “height gap”). It is known that the timing of puberty is associated with adult height: earlier puberty causes shorter adult height and vice versa. We hypothesized that the targeted process of growth involves adaptation of the age of onset of puberty in accordance with the height gap. Continue reading

Prescription Stimulant Use Varies Widely Across US

MedicalResearch.com Interview with:

Brian J. Piper, PhD, MS Department of Basic Sciences Geisinger Commonwealth School of Medicine Scranton, PA 18509

Dr. Piper

Brian J. Piper, PhD, MS
Assistant Professor of Neuroscience
Department of Basic Sciences,
Geisinger Commonwealth School of Medicine,
Scranton PA 18509 

MedicalResearch.com: What is the background for this study?

Response: The U.S. accounts for five percent of the world population but more than 92 percent of the world’s spending on pharmacotherapies for Attention Deficit Hyperactivity Disorder (ADHD). According to the 2011 National Survey of Children’s Health, ADHD increased to 11.0 percent of U.S. children, seven percent of girls and 15 percent of boys. Interestingly, ADHD rates were much lower among Hispanic children.

The 2013 revision to the Diagnostic and Statistical Manual of Mental Disorders broadened the criteria such that it became easier to diagnose adult ADHD. Together, we hypothesized that use of amphetamine (Adderall), methylphenidate (Ritalin), and lisdexamfetamine (Vyvanse) would be increasing. We also predicted that there would be some regional differences in stimulant use.

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Strong Link Between HPV and HIV Infection in MSM

MedicalResearch.com Interview with:

Brandon Brown, MPH, PhD Associate Professor Center for Healthy Communities Department of Social Medicine, Population and Public Health UCR School of Medicine Riverside, CA 

Dr. Brown

Brandon Brown, MPH, PhD
Associate Professor
Center for Healthy Communities
Department of Social Medicine, Population and Public Health
UCR School of Medicine
Riverside, CA

MedicalResearch.com: What is the background for this study? What are the main findings? 

Response: The authors have been working in Lima, Peru on HIV-related projects for over 17 years. This particular study arose out of interest from our main community collaborator and the only gay men’s health NGO in Lima, Epicentro Salud (http://epicentro.org.pe/index.php/en/). The NGO noticed that one of the main health issues among their clients was genital warts. When we learned this, we applied for funding through the Merck Investigator Initiated Studies Program to conduct a study examining the link between genital warts and incident HIV infection.

The relationship between anogenital HPV types and incident HIV infection among men who have sex with men and transgender women in Lima, Peru

The relationship between anogenital HPV types and incident HIV infection among men who have sex with men and transgender women in Lima, Peru

Although most studies have shown a general link between HPV and HIV co-infection, our findings illustrate the strong relationship between individual HPV types and HIV infection. Specifically, individuals in our study with any HPV type, more than one HPV type, or high-risk HPV were more likely to acquire HIV.

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