Author Interviews, Endocrinology, Pediatrics / 03.03.2019
Childhood Onset of Puberty and Parental Height Linked
MedicalResearch.com Interview with:
[caption id="attachment_47745" align="alignleft" width="200"] Dr. Limony[/caption]
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.
Dr. Limony[/caption]
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.
Dr. Kuan-Pin Su[/caption]
Kuan-Pin Su, MD, PhD
China Medical University
Taichung, Taiwan
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Delirium, also known as acute confusional state, is a serious disturbance in mental abilities that results in confused thinking and reduced awareness of the environment. Delirium can often be traced to one or more contributing factors, such as a severe or chronic illness, changes in metabolic balance (such as low sodium), medication, infection, surgery, or alcohol or drug intoxication or withdrawal. It’s critically important to identify and treat delirium because some of the contributing factors could be life-threatening. However, there is no sufficient evidence for choice of medication to treat or prevent the symptoms of delirium.
A recent paper, Association of Delirium Response and Safety of Pharmacological Interventions for the Management and Prevention of Delirium A Network Meta-analysis, published in JAMA Psychiatry provides important findings of this missing piece in that important clinical uncertainty. The leading author, Professor Kuan-Pin Su, at the China Medical University in Taichung, Taiwan, concludes the main finding about treatment/prevention of delirium: “In this report, we found that the combination of haloperidol and lorazepam demonstrated the best option for treatment of delirium, while ramelteon for prevention against delirium. 
Dr. Gupta[/caption]
Ruchi Gupta MD MPH
Mary Ann & J Milburn Smith Senior Scientist in Child Health Research
Director, Science & Outcomes of Allergy & Asthma Research
Professor of Pediatrics & Medicine
Clinical Attending
Ann & Robert H. Lurie Children's Hospital of Chicago
Institute for Public Health and Medicine
Northwestern Feinberg School of Medicine
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Dr. Warren[/caption]
Christopher M. Warren, PhD
University of Southern California
Los Angeles, CA
MedicalResearch.com: What is the background for this study?
Response: Readers may be familiar with the so-called "top 8" food allergens (i.e. peanut, tree nut, cow's milk, fin fish, shellfish, egg, wheat and soy), which are responsible for the majority of food allergies in the US. However, in recent years increasing attention has been paid to sesame allergy, which evidence suggests can lead to anaphylaxis, frequently results in accidental exposure among affected patients, and is infrequently outgrown. Until now, only one 2010 study has systematically assessed the prevalence of sesame among both US children and adults. It concluded that sesame allergies were reported by approximately .1% of the US population.
However, this study, which surveyed a sample of approximately 5000 US households only captured 13 individuals with reported sesame allergy, which limited the authors' ability to draw more detailed conclusions about the specific characteristics of sesame allergy in the United States. 
Dr. Li[/caption]
Fuzhong Li, Ph.D.
Senior Scientist
Oregon Research Institute
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Injurious falls among community-dwelling older adults are a serious public health and cost-bearing problem worldwide.Exercise has been shown to reduce falls and injurious falls among older adults. However, evidence is limited with regard to the type of exercise interventions that are most effective, without exacerbating the risk in some individuals, in reducing injurious falls.
This study addresses this knowledge gap in the field of falls prevention. Findings from this study showed that a six-month Tai Ji Quan program reduced the incidence of injurious falls among frail elderly by 53% compared to a regular (multimodal) exercise intervention. The effect of the Tai Ji Quan intervention was shown to be robust, and still evident at follow-up examinations six months after the study.
Dr Paul Gentil
Faculty of Physical Education and Dance
Federal University of Goias
Goiania, Brazil
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Although being overweight and/or obese are associated with numerous health risks, the prevalence of both are continuing to increase worldwide. The treatment would include anything that results in an increase in energy expenditure (exercise) or a decrease in energy intake (diet). However, our metabolism seems to adapt to variations in physical activity to maintain total energy expenditure. Although lower-than-expected weight loss is often attributed to incomplete adherence to prescribed interventions, there are other factors that might influence the results, such as, metabolic downregulation.
So, instead of making people spend more calories, maybe we have to think on how to promote metabolic changes in order to overcome these physiological adaptations above-mentioned. In this regard, high intensity training might be particularly interesting as a strategy to promote fat loss. Irrespective the amount of calories spent during training, higher intensity exercise seems to promote many physiological changes that might favor long-term weight loss. For example, previous studies have shown that interval training is able to promote upregulation of important enzymes associated with glycolysis and beta oxidation pathways, which occurs in a greater extent than with moderate intensity continuous exercise.
Our findings suggest that interval training might be an important tool to promote weigh loss. However, I t might be performed adequately and under direct supervision in order to get better results.
Dr. Jeremiah Schuur[/caption]
Jeremiah Schuur, MD, MHS FACEP
Physician-in-chief for emergency medicine at Lifespan and Chair of the department of Emergency Medicine
Brown
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Firearm injury is a leading cause of injury and death in the United States. Many physician groups advocate for evidence-based policies, such as universal background checks, to reduce this morbidity and mortality.
We studied contributions of the 25 largest political action committees (PACs) affiliated with physician professional groups during the 2016 election cycle and found that almost all gave more money to political candidates who voted against universal background checks and were endorsed by the NRA.
These PACs contributed to more than twice as many incumbent US Senate candidates who voted against an amendment to expand firearm background checks than those who voted for the amendment. In the US House of Representatives, the pattern of giving was similar. These PACs gave $2.8 million more to candidates who did not sponsor a bill to expand background checks than to those who did. Finally, these physician PACs were more than twice as likely to contribute to and gave almost $1.5 million dollars more to candidates rated A by the NRA.
Dr. Jagpreet Chhatwal[/caption]
Jagpreet Chhatwal PhD
Assistant Professor, Harvard Medical School
Senior Scientist, Institute for Technology Assessment
Massachusetts General Hospital
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