Conflict of interest

STUDY QUESTION: When does germ cell loss and fibrosis occur in patients with Klinefelter syndrome (KS)? SUMMARY ANSWER: In KS, germ cell loss is not observed in testicular tissue from fetuses in the second semester of pregnancy but present at a prepubertal age when the testicular architecture is still normal, while fibrosis is highly present at an adolescent age. WHAT IS KNOWN ALREADY: Most KS patients are azoospermic at adult age because of a massive germ cell loss...

STUDY QUESTION: What is the incidence/prevalence of type 2 diabetes in women with polycystic ovary syndrome (PCOS) and the economic burden associated with PCOS in the UK? SUMMARY ANSWER: The incidence and prevalence of type 2 diabetes in women with PCOS are 3-33 per 1000 person years and 26.5%, respectively, with an associated annual healthcare burden of at least £237 million in the UK. WHAT IS KNOWN ALREADY: Although observational studies have been designed to assess the incidence of diabetes in women with PCOS, these have been open to criticism because of short periods of follow-up, small sample sizes or invalidated diagnosis of PCOS...

BACKGROUND: Major depression and other depressive conditions are common in people with cancer. These conditions are not easily detectable in clinical practice, due to the overlap between medical and psychiatric symptoms, as described by diagnostic manuals such as the Diagnostic and Statistical Manual of Mental Disorders (DSM) and International Classification of Diseases (ICD). Moreover, it is particularly challenging to distinguish between pathological and normal reactions to such a severe illness...

Diabetic retinopathy, a complication of both type 1 and type 2 diabetes, is a complex disease and is one of the leading causes of blindness in adults worldwide. It can be divided into distinct subclasses, one of which is diabetic macular oedema. Diabetic macular oedema can occur at any time in diabetic retinopathy and is the most common cause of vision loss in patients with type 2 diabetes. The purpose of this review is to summarize the large number of genetic association studies that have been performed in cohorts of patients with type 2 diabetes and published in English-language journals up to February 2017...

People are strongly motivated to pursue social equality during social interactions. Previous studies have shown that outcome equality influences the neural activities of monetary feedback processing in socioeconomic games; however, it remains unclear whether perception of opportunity equality affects outcome evaluation even when outcomes are maintained equal. The current study investigated the electrophysiological activities of outcome evaluation in different instructed opportunity equality conditions with event-related potentials (ERPs)...

BACKGROUND CONTEXT: Revision posterior decompression and fusion for patients with symptomatic ASD is associated with significant morbidity and is technically challenging. The use of a stand-alone LLIF in patients with symptomatic ASD may avoid many of the complications associated with revision posterior surgery. PURPOSE: To assess the clinical and radiographic outcomes of patients who underwent stand-alone lateral lumbar interbody fusion (LLIF) for symptomatic adjacent segment disease (ASD)...

BACKGROUND CONTEXT: Unrecognized and inadequately repaired intraoperative durotomies may lead to cerebrospinal fluid leak, pseudomeningocele, and other complications. Few studies have investigated durotomy that is unrecognized intraoperatively and requires additional postoperative management (hereafter, late-presenting dural tear [LPDT]), though estimates of LPDT range from 0.6 - 8.3 per 1,000 spinal surgeries. These single-center studies are based on relatively small sample sizes for an event of this rarity, all with <10 patients experiencing LPDT...

BACKGROUND CONTEXT: There is increasing evidence supporting an association between sitting time and low back pain (LBP). However, the degree of the association between the total daily sitting time and LBP in the general population is poorly understood. PURPOSE: (1) To analyze the association between the duration of sitting time and LBP, and (2) to examine this association according to the degree of physical activity in population over 50 years of age with a nationally representative sample of Korean adults...

Open data available largely and with minimal constraints to the general public and journalists are needed to help rebuild trust between citizens and the health system. By opening data, we can expect to increase the democratic accountability, the self-empowerment of citizens. This article aims at assessing the quality and reusability of the Transparency - Health database with regards to the FAIR principles. More specifically, we observe the quality of the identity of the French medical doctors in the Transp-db...

Purpose: There has been interest in determining whether lid wiper epitheliopathy (LWE) plays a key role in causing ocular discomfort. Conflicting reports have made it difficult to discern whether LWE is more prevalent in certain populations, what characteristics are associated with its severity, and what its role is in symptomology. This cross-sectional study on a large and diverse population attempts to answer these questions. Methods: Subjects were asked to complete questionnaires related to dry eye and to ocular discomfort...

Empathy plays a central role in social decisions involving psychological conflict, such as whether to help another person at the cost of one's own interests. Using the event-related potential (ERP) technique, the current study explored the neural mechanisms underlying the empathic effect on the evaluation processing of outcomes in conflict-of-interest situations, in which the gain of others resulted in the performer's loss. In the high-empathy condition, the beneficiaries were underprivileged students who were living in distress (stranger in need)...

BACKGROUND: Patients with severe mental illness may be subjected to Community Treatment Orders (CTOs) in order to secure that the patients adhere to treatment. Few studies have investigated the use of CTOs within an Assertive Community Treatment (ACT) setting, and little is known about how the tension between the patients' autonomy and the clinicians' responsibility to act in the patients' best interest are resolved in practice. The aim of this study was to explore the service providers' experiences with CTOs within an ACT setting...

BACKGROUND: Academic journals such as The Journal of Bone & Joint Surgery (JBJS) require disclosures of financial relationships that authors report as potential conflicts of interest. Because industry payments can take various forms, including food and beverage, consulting, or research payments, the purpose of this study was to determine which categories of industry-reported payments were most frequently considered by authors as irrelevant to their specific publication, and therefore not included in their journal disclosures...

STUDY QUESTION: Is it possible to improve fibrosis in endometriosis by microRNA-214 delivery in exosomes? SUMMARY ANSWER: Upregulation of miR-214 may inhibit fibrogenesis and its delivery by exosomes derived from ectopic endometrial stromal cells, offers an alternative therapeutic approach for endometriosis fibrosis. WHAT IS KNOWN ALREADY: Fibrosis is the primary pathological feature of endometriosis. MiR-214 plays an important role in fibrotic disease...

STUDY QUESTION: Could a more detailed evaluation of marmoset spermatogonial morphology, kinetics, and niches using high-resolution light microscopy (HRLM) lead to new findings? SUMMARY ANSWER: Three new classes of marmoset spermatogonia, which were not evenly distributed in terms of number and position along the basal membrane, and an extra premeiotic cell division not present in humans were identified using HRLM. WHAT IS KNOWN ALREADY: The seminiferous epithelium cycle (SEC) of marmosets is divided into nine stages when based on the acrosome system, and several spermatogenic stages can usually be recognized within the same tubular cross-section...

Empirical population genetic studies generally rely on sampling subsets of the population(s) of interest and of the nuclear or organellar genome targeted, assuming each are representative of the whole. Violations of these assumptions may impact population-level parameter estimation and lead to spurious inferences. Here we used targeted capture to sequence the full mitochondrial genome from 123 individuals of the Galapagos giant tortoise endemic to Pinzón Island (Chelonoidis duncanensis) sampled at two time points pre- and post-bottleneck (circa 1906 and 2014) to explicitly assess differences in diversity estimates and demographic reconstructions based on subsets of the mitochondrial genome versus the full sequences, and to evaluate potential biases associated with diversity estimates and demographic reconstructions from post-bottlenecked samples alone...

STUDY QUESTION: Do growth patterns and endocrine profiles differ between ovulatory follicles (OvFs) and luteinized unruptured follicles (LUFs) in women? SUMMARY ANSWER: Growth rates, diameters and associated endocrine profiles differed between OvFs and LUFs in unstimulated cycles. WHAT IS KNOWN ALREADY: Two-three waves of antral follicles develop during the menstrual cycle in ovulatory women of reproductive age, with the second or third wave terminating in ovulation...

STUDY QUESTION: Are the concentrations of five criteria air pollutants associated with probabilities of biochemical pregnancy loss and intrauterine pregnancy in women? SUMMARY ANSWER: Increased concentrations of ambient particulate matter (PM10), nitrogen dioxide (NO2), carbon monoxide (CO) during controlled ovarian stimulation (COS) and after embryo transfer were associated with a decreased probability of intrauterine pregnancy. WHAT IS KNOWN ALREADY: Exposure to high ambient air pollution was suggested to be associated with low fertility and high early pregnancy loss in women...

Since 1980, every edition of the Dietary Guidelines for Americans (DGAs) has recommended increased consumption of fruits, vegetables, and whole grains, but reduced consumption of saturated fat, sugars, and sodium and, therefore, their primary food sources. Every edition has generated controversy, mainly from producers of foods affected by "eat less" recommendations, particularly meat. Objections to the 2015 DGAs focused on environmental as well as scientific issues, but also on purported conflicts of interest among members of the Dietary Guidelines Advisory Committee...

This study aims to explore possible risk factors for child maltreatment in Vietnam by investigating the association of child and family factors with different types of child maltreatment (i.e., sexual abuse, physical abuse, emotional abuse, witnessing parental conflict, and neglect) and the occurrence of multiple types of child maltreatment. Cross-sectional data of 1,851 secondary and high school students aged 12 to 17 years (47.3% boys) in four provinces of Northern Vietnam were obtained using self-report questionnaires...