Mental health status and coping strategies during COVID-19 pandemic among university students in Central Serbia

Background

The objective of this research was to evaluate the occurrence of depression, anxiety, and stress, as well as the level of life contentment and coping mechanisms employed by college students amidst the COVID-19 pandemic.

Methods

A total of 588 students of the Faculty of Mechanical Engineering and the Higher School of Medicine, Kraljevo, University of Kragujevac, Central Serbia, participated in an online cross-sectional survey in the period September-October 2022. Depression Anxiety Stress Scales (DASS-21) was used to measure the levels of depression, anxiety, and stress. The Coping Questionnaire-a shorter version (Brief Cope Inventories) assesses the coping strategies a person uses in stressful situations, and the 5-item Life Satisfaction Scale is used to examine the level of life satisfaction.

Results

The symptoms of depression were reported by 34.9%, of anxiety by 47.1% and of stress by 44.2%. The type of faculty (p = 0.001), and place of residence (p = 0.036) correlated with depression, gender with anxiety (p = 0.001) and stress (p = 0.015). In terms of coping mechanisms, the most frequently mentioned strategies, based on average scores, were acceptance (5.76), positive interpretation (5.55), humor (5.46).

Conclusion

The adverse impact of COVID-19 was a risk factor for depression, anxiety and stress symptoms. A negative correlation exists between the levels of depression, anxiety, and stress, and the overall life satisfaction of university students. Offering the necessary assistance through psychological interventions and effective coping techniques is crucial in ensuring the optimal mental health of university students.

Socioeconomic inequalities in the use of dental health care among the adult population in Serbia

Objectives

The aim of this paper is to assess the association of demografic and socioeconomic determinants with utilization of dental services among Serbian adults.

Materials and methods

The study is a part of the population health research of Serbia, conducted in the period from October to December 2019 by the Institute of Statistics of the Republic of Serbia in cooperation with the Institute of Public Health of Serbia "Dr. Milan JovanovićBatut" and the Ministry of Health of the Republic of Serbia. The research was conducted as a descriptive, cross-sectional analytical study on a representative sample of the population of Serbia. For the purposes of this study, data on the adult population aged 20 years and older were used.

Results

Men were approximately 1.8 times more likely than women to not utilize dental healthcare services (OR = 1.81). The likelihood of not utilizing dental healthcare protection rises with increasing age, reaching its peak within the 65-74 age range (OR = 0.441), after which it declines. Individuals who have experienced marital dissolution due to divorce or the death of a spouse exhibit a higher probability of not utilizing health protection (OR = 1.868). As the level of education and wealth diminishes, the probability of abstaining from health protection increases by 5.8 times among respondents with an elementary school education (OR = 5.852) and 1.7 times among the most economically disadvantaged respondents (OR = 1.745). Regarding inactivity, respondents who are not employed have a 2.6-fold higher likelihood of not utilizing oral health care compared to employed respondents (OR = 2.610).

Conclusion

The results suggest that individual sociodemographic factors influence utilization of dental services by Serbian adults and confirmed the existence of socioeconomic disparities.

Forensic characteristics of chest injuries among subjects who died in road traffic accidents

Background/Aim. In road traffic accidents, chest injuries are a critical factor since death usually occurs as a result of injuries to the heart and lungs, flail chest, pneumothorax, exsanguination, etc. The aim of this study was to analyze the most vulnerable subjects in road accidents, as well as the most frequent and most significant types of chest injuries sustained by different categories of subjects, and to examine the relevance of certain injuries or factors to outliving the injuries. Methods. The autopsy, the retrospective, and the cross-sectional study were performed at the Clinical Centre of Kragujevac, Department of Forensic Medicine and Toxicology. The study included all participants in road traffic accidents on the territory of Kragujevac and the surrounding area who died from the injuries sustained from the accidents or due to complications of the injuries during the period from 2001 to 2016. The subjects were divided into the following groups: pedestrians, motor vehicle drivers, front-seat passengers, back-seat passengers, bicyclists, motorcyclists, and tractor drivers. The occurrence of injuries in three regions of the body (chest, head, and abdomen) was analyzed in all the subjects. Results. The study included 525 subjects who died due to the injuries sustained in traffic accidents, which makes up to 38.4% of the total number of 1,366 autopsy cases covered by the study period. The average age of the subjects was 52 ? 19 years. The study sample consisted of 391 (74.5%) men and 134 (25.5%) women. The most vulnerable subjects were pedestrians (220, i.e. 41.9%), followed by motor vehicle drivers ( 98, i .e. 1 8.7%), front-seat passengers (79, i.e. 15%), motorcyclists (39, i.e. 7.4%), bicyclists (38, i.e. 7.2%), back-seat passengers (29, i.e. 5.5%) and tractor drivers (22, i.e. 4.2%). Chest injuries were identified in 408 subjects (77.7%), while the most frequent type of in-jury was rib fracture, observed in two-thirds of the sample. Out of the total number, 291 (55.4%) subjects died at the scene of the accident or on their way to the hospital, while 234 (44.6%) of them outlived injuries for a certain period of time. Drivers exhibited the highest risk of dying at the scene, while bicyclists outlived their injuries more frequently. Conclusion. Chest injuries are very common in subjects who died at the scene of the road traffic accident.

Clinical - pathological significance of leptin receptor (LEPR) expression in squamous cell carcinoma of the skin

Adipokine leptin functions through its transmembrane receptors (LEPR). In many malignant tumors it stimulates the growth, migration and invasion of malignant cells. The aim of our work is to examine the effect of LEPR expression on the clinical-morphological properties of squamous cell carcinoma of the skin (cSCC). The biopsy material obtained by excision of squamous cell skin cancer was used. The test group consisted of excision biopsies of squamous cell carcinoma of the skin (n = 62), and the control group (n = 62) consisted of excision biopsies of non-tumor tissue of the skin (from the tumor environment) from an operative preparation delivered to the Pathohistology Department. After routine processing and paraffin molding, histochemical Hematoxylin-Eosin and immunohistochemical ABC method with anti LEPR and Ki67 antibodies were applied at 4 μm sections. The statistical software package SPSS for Windows (26.0) was used to analyze obtained results. Intracytoplasmic and intramembranous LEPR expression was found in 100 % of examined cSCCs. LEPR expression was statistically significantly associated with proliferation index and histologic grade of tumors. Pronounced LEPR expression was associated with a high proliferation index in 66.7 % of cases and with poorly differentiated cSCC in 94.4 %. Multivariate regression analysis showed that cSCCs with pronounced LEPR expression were seven times more often poorly differentiated than tumors with moderate or LEPR expression in trace. Our results indicate that LEPR expression is a predictor of the malignant potential of cSCC, so that based on LEPR expression, it is possible to identify an aggressive cSCC phenotype, which provides the possibility of individualizing anti-tumor treatment using LEPR antagonists.

Forensic Genetics and Genotyping

Forensic genetics represents a combination of molecular and population genetics. Personal identification and kinship analysis (e.g. paternity testing) are the two main subjects of forensic DNA analysis. Biological specimens from which DNA is isolated are blood, semen, saliva, tissues, bones, teeth, hairs. Genotyping has become a basis in the characterization of forensic biological evidence. It is performed using a variety of genetic markers, which are divided into two large groups: bi-allelic (single-nucleotide polymorphisms, SNP) and multi-allelic polymorphisms (variable number of tandem repeats, VNTR and short tandem repeats, STR). This review describes the purpose of genetic markers in forensic investigation and their limitations. The STR loci are currently the most informative genetic markers for identity testing, but in cases without a suspect SNP can predict offender’s ancestry and phenotype traits such as skin, eyes and hair color. Nowadays, many countries worldwide have established forensic DNA databases based on autosomal short tandem repeats and other markers. In order for DNA profile database to be useful at a national or international level, it is essential to standardize genetic markers used in laboratories.