Associations between TERT Promoter Mutations and Survival in Superficial Spreading and Nodular Melanomas in a Large Prospective Patient Cohort.

Survival outcomes in melanoma and their association with mutations in the telomerase reverse transcriptase gene TERT promoter remain uncertain. In addition, few studies have examined whether these associations are affected by a nearby common germline polymorphism or vary on the basis of melanoma histopathological subtype. We analyzed 408 primary tumors from a prospective melanoma cohort for somatic TERT-124[C>T] and TERT-146[C>T] mutations, the germline polymorphism rs2853669, and BRAFV600 and NRASQ61 mutations. We tested the associations between these variants and clinicopathologic factors and survival outcomes. TERT-124[C>T] was associated with thicker tumors, ulceration, mitoses (>0/mm2), nodular histotype, and CNS involvement. In a multivariable model controlling for the American Joint Committee on Cancer stage, TERT-124[C>T] was an independent predictor of shorter recurrence-free survival (hazard ratio = 2.58, P = 0.001) and overall survival (hazard ratio = 2.47, P = 0.029). Patients with the germline variant and TERT-124[C>T]-mutant melanomas had significantly shorter recurrence-free survival than those lacking either or both sequence variants (P < 0.04). The impact of the germline variant appeared to be more pronounced in superficial spreading than in nodular melanoma. No associations were found between survival and TERT-146[C>T], BRAF, or NRAS mutations. These findings strongly suggest that TERT-124[C>T] mutation is a biomarker of aggressive primary melanomas, an effect that may be modulated by rs2853669.

Exercise-induced changes in miRNA expression in coronary artery disease.

OBJECTIVES: Micro ribonucleic acids (miRNAs) are small non-coding RNA molecules that control gene expression by translational inhibition. Exercise has been shown to affect several miRNAs' expression in healthy subjects, but this has not yet been studied in patients with coronary artery disease (CAD). Since exercise training confers beneficial long-term effects and may also trigger acute coronary events, it is of utmost interest to be able to identify those who are risk for untoward effects. Therefore, we set out to assess miRNA expression in response to maximal ergospirometry in patients with CAD. METHODS: Total RNA was extracted from blood drawn immediately before and 5 min after maximal cycle-ergospirometry (10 male and 10 female CAD patients). A qRT-PCR was performed for 187 target miRNAs associated with endothelial function/dysfunction, cardiovascular disease, myocardial infarction, and sudden cardiac death. RESULTS: In response to a maximal ergospirometry, 33 miRNAs significantly changed their expression levels. Of these miRNAs 16 were significantly differently expressed between gender. Using multi-variance analysis, nine miRNAs (let-7e-5p; miR-1; miR-19b-1-5p; miR-103a-3p; miR-148b-3p; miR-181b-5p; miR-188-5p; miR-423-5p; miR-874-3p) showed significantly different responses to maximal ergospirometry between genders. CONCLUSIONS: We report for the first time that in patients with CAD, miRNA expression is amenable to maximal ergospirometry and that the extent of changes differs between genders. Affected by exercise and gender were miRNAs that are associated, among others, with pathways for glucose metabolism, oxidative stress, and angiogenesis. Future studies should assess whether disease-specific miRNA expression in response to maximal exercise might serve as a marker for patient outcome.

The mutagenic potency of onion juice vs. its contents of quercetin and rutin.

In spite of its considerable value as a predictor of in vivo genotoxicity and even for carcinogenicity, false positive cases were reported for the Ames test, e.g., with a number of natural food constituents. Here we analyzed the effects of juice of Allium cepa, the common onion, a staple food and traditional remedy used in many civilizations, in the Ames fluctuation assay. We could find mild mutagenicity with an onion juice extract in Salmonella typhimurium strains TA98 and TA100, the latter being less sensitive towards the extract. Mutagenicity was not influenced markedly by the presence of rat liver S9 mix. Onion juice also exerted some toxicity to the bacteria in the same concentration range. Comparative studies with quercetin and rutin, major flavonoid glycosides in onions, revealed a mutagenic potency of quercetin with an EC50-value of 4 µM in TA98. The contents of quercetin and rutin in onion juice were determined as 0.71 ± 0.20, and 0.71 ± 0.21 mg/kg. Calculations of quercetin and rutin concentrations in mutagenic dilutions revealed that both compounds are highly unlikely to cause the mutagenic effects of onion juice and that other yet undefined constituents must be responsible for these effects.

The Feasibility and Impact of a Presurgical Exercise Intervention Program (Prehabilitation) for Patients Undergoing Cystectomy for Bladder Cancer.

OBJECTIVE: To assess the feasibility of a prehabilitation program for cystectomy patients and to determine the effectiveness of the program in improving strength and functional capacity in the peri-operative period. MATERIALS AND METHODS: This phase I/II study accrued patients ≥60 years old from January 2013 to October 2017 with biopsy-proven bladder cancer, Karnofsky performance score ≥70 and a sedentary baseline lifestyle to participate in a 4-week supervised preoperative exercise training program. Primary outcomes were feasibility and safety; secondary outcomes included changes in fitness, patient-reported QOL, peri-operative complications and readmissions. Student's ttests and Wilcoxon signed-rank test were performed. RESULTS: Fifty-four patients enrolled in the program. Successful completion, defined as patients who began the program and adhered to >70% of the sessions, was attained by 41 of 51 patients (80.4%, 90% CI [71%-90%]). There were no adverse events. Fitness and patient-reported QOL improved postintervention, with sustained improvements in general and mental health 90-days postsurgery. The primary limitation is no control group. CONCLUSION: Prehabilitation prior to cystectomy is feasible, safe, and results in improvements in patient strength, endurance and sustained improvements in patient-reported QOL from baseline. Efforts to further evaluate the impact of prehabilitation in this population in an expanded and randomized fashion are warranted.

"I Tell Them What I Can Feel and How Far My Legs Can Bend": Optimizing Sexual Satisfaction for Women With Spina Bifida.

BACKGROUND: There is a high reported rate of sexual dysfunction among women with spina bifida, but little is known about the etiology of this or how sexual satisfaction could be improved. AIM: To identify, through the words of women with spina bifida, perceived causes of diminished sexual satisfaction and recommendations to optimize partnered sexual encounters. METHODS: In this qualitative study, we conducted semi-structured individual interviews with 22 women with spina bifida (median age 26.5 years, range 16-52 years) who have had a romantic partner. Using Grounded Theory, interviews were independently coded by 3 reviewers. Disagreements were resolved by consensus. OUTCOMES: We identified overlapping themes of issues women experienced during sexual intimacy and strategies they learned to improve sexual encounters. RESULTS: 7 salient themes emerged from the data: (i) fear of rejection with resulting difficulty setting boundaries and the risk of coercion; (ii) conflict between spontaneity and self-care in sexual encounters; (iii) worry about incontinence during sex; (iv) trial and error in learning optimal sexual positions; (v) decreased genital sensation; (vi) safety considerations; and (vii) sharing advice with other women with spina bifida. CLINICAL IMPLICATIONS: As sexual satisfaction is influenced by physical features as well as psychological, interpersonal, and sociocultural factors, optimizing sexual satisfaction of women with spina bifida is best managed with a holistic approach utilizing a biopsychosocial model. STRENGTHS & LIMITATIONS: The sample included women with a diverse range of functional impairments. Women were forthright with their comments and thematic saturation was reached. Recruitment was primarily from a single Midwestern institution, which may have limited sampled perspectives. CONCLUSION: While women with spina bifida encounter challenges during sexual encounters, strategies focused on improving communication with partners and addressing specific physical considerations can potentially enhance their sexual experiences. Streur CS, Schafer CL, Garcia VP, et al. "I Tell Them What I Can Feel and How Far My Legs Can Bend": Optimizing Sexual Satisfaction for Women With Spina Bifida. J Sex Med 2020;17;1694-1704.

Health effects of active commuting to work: The available evidence before GISMO.

Sedentary lifestyle is a major modifiable risk factor for many chronic diseases. Global guidelines recommend for maintaining health in adults, at least 150 minutes of moderate intensity of physical activity throughout the week, but compliance is insufficient and health problems arise. One obvious way to overcome this is to integrate physical activity into the daily routine for example by active commuting to work. Scientific evidence, however, is scarce and therefore we set out to perform this systematic review of the available literature to improve understanding of the efficiency of active commuting initiatives on health. Literature searches were performed in PubMed and Cochrane database. Altogether, 37 studies were screened. Thereof, eight publications were reviewed, which included 555 participants. The mean study duration of the reviewed research was 36 ± 26 (8-72) weeks. Overall, active commuting in previously untrained subjects of both sexes significantly improved exercise capacity, maximal power, blood pressure, lipid parameters including cholesterol, high-density lipoprotein, and waist circumference. Improvement was independent of the type of active commuting. Despite relatively few studies that were previously performed, this review revealed that active commuting has health beneficial effects comparable to those of moderate exercise training.

"He told me it would be extremely selfish of me to even consider [having kids]": The importance of reproductive health to women with spina bifida and the lack of support from their providers.

BACKGROUND: As more women with spina bifida (SB) enter their reproductive years, the number having children is significantly increasing. However, little is known about their understanding of their ability to get pregnant or their experiences in considering, planning, or interacting with providers during a pregnancy. OBJECTIVE: We sought to determine what women have been told and understand about their reproductive health, their attitudes towards having children, and their experiences interacting with providers when seeking reproductive health care. METHODS: In this exploratory study employing qualitative research methods and following Grounded Theory, interviews with women with SB 16 years or older were transcribed verbatim and analyzed by three coders. RESULTS: Interviews of 25 women with SB ages 16-52 (median 26) revealed the following themes about their reproductive health perceptions and experiences: 1) poor understanding of reproductive health and potential, 2) interest in having a family, 3) facing provider's opposition to their reproductive goals, 4) going into pregnancy and delivery unprepared, 5) the importance of provider support for reproductive goals. Five women experienced an unintended pregnancy. CONCLUSIONS: Although having children is important to most women with SB in this study, they report a poor understanding of their reproductive potential with several noting unintended pregnancies. They feel uninformed and unprepared during pregnancy and face discouragement from providers. Those experiencing supportive providers report a more positive experience. This demonstrates the urgent need to educate women with SB about their reproductive health and the providers who care for them how to support and counsel these women.

"If Everyone Else Is Having This Talk With Their Doctor, Why Am I Not Having This Talk With Mine?": The Experiences of Sexuality and Sexual Health Education of Young Women With Spina Bifida.

INTRODUCTION: Women with spina bifida are sexually active, but most never discuss this topic with providers. AIM: To determine what women with spina bifida understand about their sexual health, how they learned about it, what questions they have, and their experiences with their sexuality. METHODS: For this qualitative study, women with spina bifida ages 16 and older without marked developmental delay were individually interviewed. 25 women with spina bifida participated (mean age 27.1 years, range 16-52). Interviews were independently coded for themes by 3 reviewers, using Grounded Theory, with disagreements resolved by consensus. MAIN OUTCOME MEASURES: We identified overlapping themes regarding the women's perception and experience of their sexuality and sexual health education. RESULTS: 17 of the 25 (68%) participants had been or were currently sexually active. 5 themes emerged regarding their understanding of their sexuality and their sexual experiences: (i) being perceived as asexual, (ii) sources for sex education, (iii) need for spina bifida-specific sex education, (iv) impact of spina bifida-specific features on sexual encounters, and (v) perceived relationship between low sexual self-confidence and risk for sexual assault. CLINICAL IMPLICATIONS: Women with spina bifida are sexual beings, but they are perceived as asexual by providers, which prevents them from getting adequate sexual health education and leaves them with misconceptions and unanswered questions, as well as vulnerable to sexual abuse. STRENGTH & LIMITATIONS: The strengths of this study include the diversity of women interviewed, including their age, severity of disability, and experiences with their sexuality, as well as the ability to reach thematic saturation. The limitation of this study is that most women received treatment at a single Midwestern tertiary referral center in the United States. CONCLUSION: Including sexual health discussions in the usual care of women with spina bifida is critical to enhancing their sexual confidence and experience and preventing sexual abuse. Streur CS, Schafer CL, Garcia VP, et al. "If Everyone Else Is Having This Talk With Their Doctor, Why Am I Not Having This Talk With Mine?": The Experiences of Sexuality and Sexual Health Education of Young Women With Spina Bifida. J Sex Med 2019;16:853-859.

Exercise responsive micro ribonucleic acids identify patients with coronary artery disease.

AIMS: Exercise is a trigger for acute coronary events especially in the untrained. Identifying subjects at risk remains a challenge. We set out to assess whether a distinct pattern of micro ribonucleic acids (miRNAs) expressed in response to an acute bout of all-out exercise might exist that would allow discrimination between health and disease. METHODS: Twenty healthy subjects and 20 patients with coronary artery disease (CAD) performed an all-out cycle ergometry. Total RNA was extracted from blood drawn before and after exercise. Each blood sample was analysed for 187 target miRNAs by quantitative reverse transcription polymerase chain reaction. RESULTS: At baseline, 18 miRNAs allowed discrimination between healthy subjects and CAD patients. In response to an acute all-out exercise in healthy subjects 51 miRNAs and in CAD patients 60 miRNAs were significantly modulated (all p < 0.05). Using logistic regression analysis, a unique pattern of pre-exercise miR-150-5p, post-exercise miR-101-3p, miR-141-3p and miR-200b-3p together with maximal oxygen uptake and maximal power corrected for bodyweight allowed discrimination between healthy subjects and CAD patients with an accuracy of 92.5%. CONCLUSION: In this most comprehensive analysis of exercise effects on circulating miRNAs to date we demonstrate for the first time that a distinct combination of miRNAs together with variables of exercise capacity allow robust discrimination between healthy subjects and CAD patients. We postulate that miRNAs may eventually serve as biomarkers to identify patients with CAD and possibly even those at risk of exercise-induced cardiac events.

"I Don't Know What I'm Doing I Hope I'm Not Just an Idiot": The Need to Train Pediatric Urologists to Discuss Sexual and Reproductive Health Care With Young Women With Spina Bifida.

INTRODUCTION: Although pediatric urologists have taken responsibility for initiating discussions on sexual and reproductive health with spina bifida patients, research shows that very few girls and women with spina bifida have ever discussed this topic with any physician. AIM: We sought to better understand pediatric urologists' gaps in knowledge and training needs in the sexual and reproductive health education of women with spina bifida with the goal of creating a tool kit to equip providers to have these discussions. METHODS: In this qualitative study, pediatric urologists were interviewed separately about their current practices, perceived barriers, knowledge gaps, and recommendations for the tool kit until thematic saturation was reached. The interviews were recorded and transcribed verbatim, then analyzed using grounded theory by 3 independent reviewers. MAIN OUTCOME MEASURES: To evaluate the perspectives and practices of pediatric urologists, we identified the overlapping themes of the interviews. Consensus on themes was reached. RESULTS: 10 Pediatric urologists participated in the study, including 5 men and 5 women, of whom 4 were fellows and 6 were attending physicians (mean years of practice 18, range 6-31 years). The mean number of patients followed up in the respective spina bifida clinics or by the provider was 434 (range 24-1,500). The following themes regarding pediatric urologists' experience providing sexual and reproductive health education to women with spina bifida emerged. Pediatric urologists': (i) lack of formal training; (ii) knowledge gaps such as spina bifida sexuality, fertility, and pregnancy experience; (iii) barriers to having sexual and reproductive health conversations such as lack of comfort and lack of time; (iv) facilitators of these conversations such as a long-term relationship with the patient and the patient's own initiative; (v) desire to learn and provide competent care; and (vi) recommendations for a web-based tool kit that would include content to address the knowledge gaps and training about how to start sexual and reproductive health conversations. CLINICAL IMPLICATIONS: These findings can provide the beginning concepts for the development of training on providing sexual and reproductive health education for pediatric urologists' care for women with spina bifida. STRENGTHS & LIMITATIONS: This study gives the perspectives of 10 pediatric urologists with a diversity of backgrounds, but all of whom care for a large number of spina bifida patients. This does not give the perspectives of the spina bifida women themselves, which will be evaluated in the next phase of the study. CONCLUSION: Pediatric urologists are not trained and do not feel prepared to provide sexual and reproductive health education for girls and women with spina bifida. However, they do see it as their scope of practice and wish to acquire competence in this area. Streur CS, Schafer CL, Garcia VP, et al. "I Don't Know What I'm Doing… I Hope I'm Not Just an Idiot": The Need to Train Pediatric Urologists to Discuss Sexual and Reproductive Health Care With Young Women With Spina Bifida. J Sex Med 2018;15:1403-1413.

Computer-assisted measurement of primary tumor area is prognostic of recurrence-free survival in stage IB melanoma patients.

Current staging guidelines are insufficient to predict which patients with thin primary melanoma are at high risk of recurrence. Computer-assisted image analysis may allow for more practical and objective histopathological analysis of primary tumors than traditional light microscopy. We studied a prospective cohort of stage IB melanoma patients treated at NYU Langone Medical Center from 2002 to 2014. Primary tumor width, manual area, digital area, and conformation were evaluated in a patient subset via computer-assisted image analysis. The associations between histologic variables and survival were evaluated using Cox proportional hazards model. Logistic regressions were used to build a classifier with clinicopathological characteristics to predict recurrence status. Of the 655 patients with stage IB melanoma studied, a subset of 149 patient tumors (63 recurred, 86 did not recur) underwent computer-assisted histopathological analysis. Increasing tumor width (hazard ratios (HR): 1.17, P=0.01) and digital area (HR: 1.08, P<0.01) were significantly associated with worse recurrence-free survival, whereas non-contiguous conformation (HR: 0.57, P=0.05) was significantly associated with better recurrence-free survival. The novel histopathological classifier composed of digital area, conformation, and baseline variables effectively distinguished recurrent cases from non-recurrent cases (AUC: 0.733, 95% confidence interval (CI): 0.647-0.818), compared to the baseline classifier alone (AUC: 0.635, 95% CI: 0.545-0.724). Primary tumor cross-sectional area, width, and conformation measured via computer-assisted analysis may help identify high-risk patients with stage IB melanoma.

An Introduction to the Inverted/Flipped Classroom Model in Education and Advanced Training in Medicine and in the Healthcare Professions.

In describing the inverted classroom model (ICM), the following paper is meant to provide an introduction to the subject matter and to serve as a practical guide for those wishing to employ its methods in basic and advanced medical training and education. The ICM is a blended-learning method in which a self-directed learning phase (individual phase) precedes the classroom-instruction phase. During the online phase, factual knowledge is imparted that serves as a basis for the classroom phase. The classroom phase should subsequently be used to assimilate and implement the previously gained knowledge. In contrast, traditional course concepts impart factual knowledge in lectures, for example, or in other face-to-face teaching formats and are followed by the students' self-instruction in order to assimilate this knowledge. The goal of the ICM is the shift from passive learning to accelerated learning in order to foster learning at cognitively demanding levels such as analysis, synthesis and evaluation. The concurrent increase in production and use of screencasts and educational videos, the Open Educational Resources "movement" and the widespread use of Massive Open Online Courses (MOOCS) have contributed to the increased dissemination of the inverted-classroom method. The intention of the present paper is to provide an introduction to the subject matter and simultaneously to offer a short overview of important projects and research results in the field of medical education and other health professions. Furthermore, an outline is given of the advantages and disadvantages of the model as well as its potential benefit to the future of medical education and training.

Acetaminophen changes intestinal epithelial cell membrane properties, subsequently affecting absorption processes.

BACKGROUND/AIMS: Acetaminophen (APAP) effects on intestinal barrier properties are less investigated. APAP may lead to a changed bioavailability of a subsequently administered drug or diet in the body. We investigated the influence of APAP on enterocytic cell membrane properties that are able to modify the net intestinal absorption of administered substances across the Caco-2 barrier model. METHODS: The effect of APAP on cytotoxicity was measured by LDH assay, TER value and cell capacitance label-free using impedance monitoring, membrane permeability by FITC-dextrans, and efflux transporter MDR1 activity by Rh123. APAP levels were determined by HPLC analysis. Cell membrane topography and microvilli were investigated using SEM and intestinal alkaline phosphatase (Alpi) and tight junction protein 1 (TJP1) expression by western blot analysis. RESULTS: APAP changed the apical cell surface, reduced the number of microvilli and protein expression of Alpi as a brush border marker and TJP1, increased the membrane integrity and concurrently decreased cell capacitance over time. In addition, APAP decreased the permeability to small molecules and increased the efflux transporter activity, MDR1. CONCLUSION: APAP alters the Caco-2 cell membrane properties by different mechanisms and reduces the permeability to administered substances. These findings may help to optimize therapeutic implications.

Interactive e-learning courses in human genetics: usage and evaluation by science and medical students at the faculty of medicin.

INTRODUCTION: This study presents our online-teaching material within the k-MED project (Knowledge in Medical Education) at the university of Marburg. It is currently organized in five e-learning modules: cytogenetics, chromosomal aberrations, formal genetics, fundamentals of molecular diagnostics, and congenital abnormalities and syndromes. These are basic courses intended to do the educational groundwork, which will enable academic teachers to concentrate on more sophisticated topics during their lectures. METHODS: The e-learning modules have been offered to a large group of about 3300 students during four years at the Faculty of Medicine in Marburg. The group consists of science students (human biology) and medical students in the preclinical or the clinical period, respectively. Participants were surveyed on acceptance by evaluating user-tracking data and questionnaires. RESULTS AND CONCLUSION: Analysis of the evaluation data proofs the broad acceptance of the e-learning modules during eight semesters. The courses are in stable or even increasing use from winter term 2005/06 until spring term 2009. CONCLUSION: Our e-learning-model is broadly accepted among students with different levels of knowledge at the Faculty of Medicine in Marburg. If the e-learning courses are maintained thoroughly, minor adaptations can increase acceptance and usage even furthermore. Their use should be extended to the medical education of technical assistances and nurses, who work in the field of human genetics.