Prevalence of depressive symptomatology among nursing students during the COVID-19 pandemic.

BACKGROUND: COVID-19 and the policies to contain it have been a social problem and public health emer-gency for people in Italy in 2020. The aim of the study is assessing the prevalence of depression symptoms among nursing students from the University of Palermo during the COVID-19 pandemic. MATERIALS AND METHODS: The study employed a cross-sectional study design. On April 2020, a survey was performed including all the nursing students of the University of Palermo. The survey was structured into two parts. The first part consisted in the collection of socio-demographic information, the second in the administration of the QIDS-SR16 questionnaire. A multivariable logistic regression model was used to elaborate the results and adjusted Odds Ratios are presented. RESULTS: The sample consisted of 525 students (70.3% female). The probability to have a moderate/severe/very severe depressive symptomatology is significantly associated with the following variables: "Female gender" (aOR 1.96), "Low perceived economic status" (aOR 2.32), "Low perceived health status" (aOR 2.30) and "To be a smoker" (aOR 2.24). CONCLUSIONS: The global pandemic and the efforts to contain it represent a unique event and offer the oppor-tunity to advance our understanding of how to provide mental health care focused on online psychoeducation and psychotherapy programs for young students.

Chemistry and in vitro antioxidant activity of volatile oil and oleoresins of black pepper (Piper nigrum).

Essential oil and oleoresins (ethanol and ethyl acetate) of Piper nigrum were extracted by using Clevenger and Soxhlet apparatus, respectively. GC-MS analysis of pepper essential oil showed the presence of 54 components representing about 96.6% of the total weight. beta-Caryophylline (29.9%) was found as the major component along with limonene (13.2%), beta-pinene (7.9%), sabinene (5.9%), and several other minor components. The major component of both ethanol and ethyl acetate oleoresins was found to contain piperine (63.9 and 39.0%), with many other components in lesser amounts. The antioxidant activities of essential oil and oleoresins were evaluated against mustard oil by peroxide, p-anisidine, and thiobarbituric acid. Both the oil and oleoresins showed strong antioxidant activity in comparison with butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) but lower than that of propyl gallate (PG). In addition, their inhibitory action by FTC method, scavenging capacity by DPPH (2,2'-diphenyl-1-picrylhydrazyl radical), and reducing power were also determined, proving the strong antioxidant capacity of both the essential oil and oleoresins of pepper.

Chemical constituents, antifungal and antioxidative effects of ajwain essential oil and its acetone extract.

GC and GC-MS analysis of ajwain essential oil showed the presence of 26 identified components which account for 96.3% of the total amount. Thymol (39.1%) was found as a major component along with p-cymene (30.8%), gamma-terpinene (23.2%), beta-pinene (1.7%), terpinene-4-ol (0.8%) whereas acetone extract of ajwain showed the presence of 18 identified components which account for 68.8% of the total amount. The major component was thymol (39.1%) followed by oleic acid (10.4%), linoleic acid (9.6%), gamma-terpinene (2.6%), p-cymene (1.6%), palmitic acid (1.6%), and xylene (0.1%). Moreover, the oil exhibited a broad spectrum of fungitoxic behavior against all tested fungi such as Aspergillus niger, Aspergillus flavus, Aspergillus oryzae, Aspergillus ochraceus, Fusarium monoliforme, Fusarium graminearum, Pencillium citrium, Penicillium viridicatum, Pencillium madriti, and Curvularia lunata as absolute mycelial zone inhibition was obtained at a 6-microL dose of the oil. However, the acetone extract showed better antioxidative activity for linseed oil as compared with synthetic antioxidants such as butylated hydroxyl toluene and butylated hydroxyl anisole.