ABSTRACT
Background: The COVID-19 pandemic is a viral infection that spreads through different mediums and has a high rate of mortality. At its initial stages, there is no particular medicine that can cure patients of COVID-19. The aim of the present study was to understand the COVID-19 knowledge, perception, and its effects in terms of anxiety and depression among frontline health care workers of Ayub Teaching Hospital, Abbottabad. Methods: This cross-sectional study was conducted in Ayub Teaching Hospital, Abbottabad from June to July 2021 in which data was collected from 200 hospital healthcare workers who have performed duties in COVID isolation wards through standard questionnaire. SPSS version 24.0 was used for data analysis. Results: Out of 200 participants in the study 100 (50.0%) were male. Regarding safety measures taken during COVID -19, 144 (72.0%) individuals reported that they have not been given training to handle known or suspected cases of COVID-19. Moderate anxiety and depression was found in 153 (76.5%) healthcare workers, mild in 25 (12.5%) and 22 (11.0%) had severe anxiety and depression at the time of COVID-19 pandemic. Conclusion: This study revealed that a significant anxiety and depression was found in frontline healthcare workers during the COVID-19 pandemic. In addition, a more extensive study should be conducted which involves many other hospitals like Ayub Teaching Hospital.
Subject(s)
COVID-19 , Humans , Male , Female , COVID-19/epidemiology , Cross-Sectional Studies , Depression/epidemiology , Pakistan/epidemiology , Pandemics , Health Personnel , Hospitals, Teaching , Anxiety/epidemiology , PerceptionABSTRACT
Copper(II) carboxylate complexes [Cu2(OOCR)4L2] (1) and [Cu2(OOCR`)4OCO(R`)CuL2]n (2), where L = 2-methyl pyridine, R = 2-chlorophenyl acetate and R` = 2-fluorophenyl acetate were synthesized and characterized by FT-IR spectroscopy and single crystal X-ray analysis. Complex 1 exhibits the typical paddlewheel array of a dinuclear copper(II) complex with carboxylate ligands. In complex 2, this scaffold is further extended into a polymeric arrangement based on alternate paddlewheel and square planar moieties with distinct coordination spheres. The complexes showed better 2,2-diphenyl-1-picrylhydrazyl (DPPH) and hydroxyl radical scavenging activities and have been found to be more potent antileishmanial agents than their corresponding free ligand acid species. UV-Vis absorption titrations revealed good DNA binding abilities {Kb = 9.8 × 104 M-1 (1) and 9.9 × 104 M-1 (2)} implying partial intercalation of the complexes into DNA base pairs along with groove binding. The complexes displayed in vitro cytotoxic activity against malignant glioma U-87 (MG U87) cell lines. Computational docking studies further support complex-DNA binding by intercalation. Molecular docking investigations revealed probable interactions of the complexes with spike protein, the nucleocapsid protein of SARS-CoV-2 and with the angiotensin converting enzyme of human cells.
ABSTRACT
Triorganotin(IV) carboxylate complexes R3SnL, where R = C4H9 (1), CH3 (2) and L = 2-chlorophenyl ethanoate, were synthesized and characterized by elemental analysis, FT-IR, NMR (1H, 13C, 119Sn) and X-ray single crystal analysis. The solid state analyses confirmed a bridging bidentate coordination mode for the carboxylate ligand rendering the tin ion a penta-coordinated centre in the synthesized complexes. NMR spectra revealed a change in the coordination number (5→4) for tin when in the solution. The structural geometry and the electronic properties of complexes were calculated by using the density functional theory (DFT) method at B3LYP level 6-31G(d, p) and Lanl2DZ basis sets. A fairly good agreement was found between the observed and theoretical bond length and bond angle values for the complex (1) and (2). The in vitro antioxidant potential of the complexes was investigated by DPPH, ferrous ion chelation, ferric ion reducing, total antioxidant and hydroxyl free radical scavenging assays. The nature of the tin bonded R groups has apparently a significant impact on the antioxidant activity of the complexes. Molecular docking studies suggest intercalation as possible mode of complex-DNA interactions. Docking studies also confirm that interactions of the two complexes with some active site residues of SARS-CoV-2 nucleocapsid protein and angiotensin-converting enzyme 2 (ACE2) are probable.