[Gender and cardiovascular diseases : Why we need gender medicine]

B7-1 and PlGF-1 are two possible new biomarkers to identify fracture-associated trauma patients at higher risk of developing complications: a cohort study

BACKGROUND

Around 10% of fractures lead to complications. With increasing fracture incidences in recent years, this poses a serious burden on the healthcare system, with increasing costs for treatment. In the present study, we aimed to identify potential 'new' blood markers to predict the development of post-surgical complications in trauma patients following a fracture.

METHODS

A total of 292 trauma patients with a complete three-month follow-up were included in this cohort study. Blood samples were obtained from 244 of these patients. Two complication groups were distinguished based on the Clavien-Dindo (CD) classification: CD grade I and CD grade III groups were compared to the controls (CD 0). The Mann-Whitney U test was used to compare the complication groups to the control group.

RESULTS

Analysis of the patients' data revealed that risk factors are dependent on sex. Both, males and females who developed a CD III complication showed elevated blood levels of B7-1 (p = 0.015 and p = 0.018, respectively) and PlGF-1 (p = 0.009 and p = 0.031, respectively), with B7-1 demonstrating greater sensitivity (B7-1: 0.706 (male) and 0.692 (female), PlGF-1: 0.647 (male) and 0.615 (female)). Further analysis of the questionnaires and medical data revealed the importance of additional risk factors. For males (CD 0: 133; CD I: 12; CD III: 18 patients) alcohol consumption was significantly increased for CD I and CD III compared to control with p = 0.009 and p = 0.007, respectively. For females (CD 0: 107; CD I: 10; CD III: 12 patients) a significantly increased average BMI [kg/m2] from 25.5 to 29.7 with CD III was observed, as well as an elevation from one to three comorbidities (p = 0.003).

CONCLUSIONS

These two potential new blood markers hold promise for predicting complication development in trauma patients. Nevertheless, further studies are necessary to evaluate the diagnostic utility of B7-1 and PlGF-1 in predicting complications in trauma patients and consider sex differences before their possible use as routine clinical screening tools.

Gender and Health Inequalities: Social Networks in the Context of Health and Health Behavior

There are significant differences in morbidity (incidence of disease) and mortality (death rate) between men and women. By puberty, male adolescents are more likely to have health problems. During puberty, girls suffer from chronic and mental illnesses and male adolescents are more likely to suffer from acute and life-threatening diseases. Boys and men have riskier health behavior. The field of research mainly relates to the binarity of the sexes—men and women. Studies on trans and queer persons are rare in this field. Networks have a gender-specific effect on risk behavior. Women provide more and more time-consuming social support, even in case of illness. After widowhood, networks have both negative and positive effects, which are gender-specific.

Gender Differences in Patients Admitted to a Certified German Chest Pain Unit: Results from the German Chest Pain Unit Registry

INTRODUCTION

Gender-specific atypical clinical presentation in acute coronary syndrome and sex-specific outcomes in cardiovascular disease in women are well known. The aim of this study is to analyze possible differences between men and women presenting to certified German chest pain units (CPUs).

METHODS

Data from 13,900 patients derived from the German CPU registry were analyzed for gender differences in patient characteristics, cardiovascular disease manifestation, critical time intervals, treatment and prognosis.

RESULTS

A total of 37.8% of patients were female. Typical chest pain occurred more frequently in men, while atypical symptoms occurred more frequently in women. Female gender was associated with longer pre- and in-hospital time delays. Women were more often diagnosed with a nonischemic origin of pain. In a 3-month follow-up, there was no gender-specific difference in combined major adverse coronary and cerebrovascular events.

DISCUSSION/CONCLUSION

This study points out gender-specific differences in prehospital time intervals and a significantly higher percentage of atypical symptoms in suspected myocardial ischemia as well as more noncoronary diagnoses in women. Symptom awareness and a broader diagnostic workup in women are essential.

[Gender-specific aspects of chronic coronary artery disease in everyday practice. Results of the AURORA health care study]

BACKGROUND

Sex/gender differences pose a challenge in the care of patients with chronic coronary artery disease (CAD) especially in the resident sector. The aim of the AURORA trial was to obtain a nationwide overview on how resident cardiologists deal with sex/gender-specific aspects of symptomatic chronic CAD in their medical routine care and in the interplay with general practitioners, as well as derive insights out of it for general practice.

METHOD

Between October 2018 and April 2019 a survey among German cardiologists (n = 360) in the outpatient sector was performed using a structured questionnaire. Items focused on the cardiologists' personal assessment of sex/gender aspects in the diagnosis and treatment and consequences for the overall medical care of patients with chronic CAD.

RESULTS

The range of symptoms of chronic CAD in male and female patients was differently assessed by the participating male or female cardiologists. General practitioners referred men at an earlier stage than women to a cardiologist for further testing. In male and female patients with non-obstructive CAD cardiovascular risk was largely assessed as comparable to patients with obstructive CAD. In terms of medical care, it was shown that therapeutic decisions made by cardiologists were generally considered and continued by the general practitioners.

CONCLUSIONS

Results from previous trials on sex/gender differences in ischemic heart disease have made their way into medical care. However, they also show potential for optimization in diagnosis, treatment and collaboration between resident cardiologists and general practitioners. Overall the results indicate that sex/gender differences in chronic CAD gain more medical attention. However, there is a current lack of concise sex-specific guidelines for prevention, diagnosis and treatment.

Gender awareness among medical students in a Swiss University

BACKGROUND

Gender is an important social determinant, that influences healthcare. The lack of awareness on how gender influences health might lead to gender bias and can contribute to substandard patient care. Our objectives were to assess gender sensitivity and the presence of gender stereotypes among swiss medical students.

METHODS

A validated scale (N-GAMS - Nijmegen Gender Awareness in Medicine Scale), with 3 subscores assessing gender sensitivity (GS) and gender stereotypes toward patients (GRIP) and doctors (GRID) (ranging from 1 to 5), was translated into French and was distributed to all medical students registered at the University of Lausanne, Switzerland in April-May 2017. Reliability of the three subscales was assessed calculating the alpha Cronbach coefficient. Mean subscales were calculated for male and female students and compared using two sample t-tests. A linear model was built with each subscale as a dependent variable and students' sex and age as covariables.

RESULTS

In total, 396 students answered the N-GAMS questionnaire, their mean age was 22 years old, 62.6% of them were women. GS and GRID sub-scores were not significantly different between female and male students (GS 3.62 for women, 3.70 for men, p = 0.27, GRID 2.10 for women, 2.13 for men, p = 0.76). A statistically significant difference was found in the GRIP subscale, with a mean score of 1.83 for women and 2.07 for men (p < 0.001), which suggests a more gender stereotyped opinion toward patients among male students. A trend was observed with age, gender sensibility increased (p < 0.001) and stereotypes decreased (GRIP p = 0.04, GRID p = 0.02) with students getting older.

CONCLUSION

Medical students' gender sensitivity seems to improve throughout the medical curriculum, and women students have less stereotypes towards patients than men do. The implementation of a gender-sensitive teaching in the medical curriculum could improve students' knowledge, limit gender bias and improve patients' care.

Sex disparity in cancer: roles of microRNAs and related functional players

A sexual dimorphism at the cellular level has been suggested to play a role in cancer onset and progression. In particular, very recent studies have unraveled striking differences between cells carrying XX or XY chromosomes in terms of response to stressful stimuli, indicating the presence of genetic and epigenetic differences determining sex-specific metabolic or phenotypic traits. Although this field of investigation is still in its infancy, available data suggest a key role of sexual chromosomes in determining cell life or death. In particular, cells carrying XX chromosomes exhibit a higher adaptive potential and survival behavior in response to microenvironmental variations with respect to XY cells. Cells from females also appear to be equipped with more efficient epigenetic machinery than the male counterpart. In particular, the X chromosome contains an unexpected high number of microRNAs (miRs), at present 118, in comparison with only two miRs localized on chromosome Y, and an average of 40-50 on the autosomes. The regulatory power of these small non-coding RNAs is well recognized, as 30-50% of all protein-coding genes are targeted by miRs and their role in cell fate has been well demonstrated. In addition, several further insights, including DNA methylation patterns that are different in males and females, claim for a significant gender disparity in cancer and in the immune system activity against tumors. In this brief paper, we analyze the state of the art of our knowledge on the implication of miRs encoded on sex chromosomes, and their related functional paths, in the regulation of cell homeostasis and depict possible perspectives for the epigenetic research in the field.