ABSTRACT
The prevalence of psychiatric disorders namely depression, anxiety, and sleep disturbances has been increased worldwide, particularly during the COVID-19 pandemic. In this regard, the interest of recent investigations is moved toward phytomedicines and bioactive substances derived from natural sources. Although Tilia platyphyllos Scop. contains high amounts of phenolic compounds such as quercetin, kaempferol, and catechin, there is no study on the possible effects of its extract on psychological disorders. The present study was carried out to determine the antidepressant-like, anxiolytic, and sedative-hypnotic effects of the hydroethanolic extract of T. platyphyllos leaves using forced swimming test (FST), tail suspension test (TST), elevated plus maze test (EPMT), pentobarbital-induced loss of righting reflex test and open field test (OFT). Following the ethanolic extraction of T. platyphyllos leaves, the extraction yield was 14% and the total phenolic and total flavonoid contents were found to be 135.23 +/- 0.14 mg gallic acid equivalent/g dry extract and 19.02 +/- 0.03 mg rutin equivalent/g dry extract, respectively. Both FTS and TST revealed a significant antidepressant-like activity for the tested extract at 400 mg/kg compared to the control group. In addition, the anxiolytic activity of the extract was proven through OFT and EPMT in the same dose. Finally, T. platyphyllos extract at 200 mg/kg and 400 mg/kg significantly increased the sleeping time when compared to the control group reflecting its potential hypnotic activity. Co-administration of T. platyphyllos extract at 400 mg/kg and flumazenil as the GABA-A receptor antagonist decreased the sleeping time but the observed effect was not statistically significant. Therefore, we cannot completely rule out the GABA-A receptor's involvement in the hypnotic activity of the extract. The biological results presented here led us to conclude that T. platyphyllos extract can be a prominent source of antidepressant, anxiolytic and hypnotic agents. Probably, the main phenolic compounds of T. platyphyllos such as quercetin, kaempferol, and catechin are involved in the observed effects. However, there is still a great need for additional investigations on the exact mechanisms.Copyright © 2022, Iranian Association of Pharmaceutical Scientists. All rights reserved.
ABSTRACT
The Coronavirus disease 2019 (Covid-19), caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), has led to unprecedented challenges for human life. During this pandemic, Turkish people have used various herbal remedies for both the prevention of Covid-19 and the alleviate of its symptoms. The present study aimed to investigate the herbal remedies used to prevent Covid-19 in Turkey and to determine whether the usage of herbal remedies was associated with sociodemographic properties. A cross-sectional study using an online questionnaire was conducted between November and December 2020. A total of 871 individuals (15 years of age or older) who lived in various provinces of Turkey participated in this study. Analysis was made in SPSS version 26.0 software using the descriptive statistics and appropriate tests of statistical significance for the comparisons. About 54.4% (n=474) of the participants reported that they have used herbal remedies during the pandemic period. We identified a total of 45 plant species, the most frequently cited were ginger (Zingiber officinale Roscoe), linden (Tilia spp.), elderberry (Sambucus nigra L.), sage (Salvia spp.), and rosehip (Rosa canina L.), respectively. It has been found that the usage of herbal remedies was associated with several demographic variables. A considerable proportion of the participants reported the use of herbal remedies in order to prevent disease. This paper demonstrated the potential herbal remedies that can be used against Covid-19. Further research should be carried out to evaluate the efficacy of these medicinal plants and should control the flow of misleading information.
ABSTRACT
Living conditions in Turkey has been changed considerably during Covid-19 pandemic. This phase has changed people's normal lives, habits such as eating, resting, and shopping and pushed them to different pursuits. This study aimed to obtain data on the consumption preferences of medicinal and aromatic plants. The survey was conducted in the autumn of 2020. Choices and health services that are effective in the consumption of Medicinal and Aromatic Plant (MAP) of consumers are estimated by statistics and logit regression model to the data obtained from the surveys. It was determined that the coronavirus pandemic increased the consumption of medicinal and aromatic plants by 76%. The plants with the highest consumption during the pandemic were recorded as rosehip, linden, mint, and ginger. Green tea and udihindi were the most consumed medicinal and aromatic plants per month. According to logit regression analysis results;age, duration of use, price, benefit, side effect, access to the chemical, additive, and hope variables increased the consumption of medicinal and aromatic plants and the likelihood of purchasing during the pandemic. It is thought that consumption of MAPs will become widespread and increase during the pandemic.