Background: From the begging months of 2020 a severe acute respiratory syndrome coronavirus (SARS-CoV-2, also called 2019-nCoV) caused a devastating global outbreak. At present, the diagnosis of coronavirus disease 2019 (COVID-19) is made through a nasopharyngeal swab based on reverse transcription polymerase chain reaction (RT-PCR) technique. However, some recent studies suggested the possible role of oral fluids and saliva in the detection of SARS-CoV-2. The purpose of this scoping review is evaluating the available evidence regarding the efficacy of saliva as a diagnostic specimen in COVID-19 patients. Methods: A systematic literature review of six databases (PubMed, Scopus, The Cochrane Central Register of Controlled Trials [CENTRAL], Science Direct, Web of Science and Google scholar) was carried out without any restrictions on date of publication to identify the reliability of saliva as a diagnostic specimen for detection of SARS-CoV-2 in suspected patients. Results: Nine eligible articles were included in this review based on our described method. All the included studies are based on clinical surveys among patients with confirmed SARS-CoV-2 infection. Most of studies included in this review, reported that there is no statistically significant difference between nasopharyngeal or sputum specimens and saliva samples regarding viral load. Conclusions: Despite limitations of this study, the findings of this review suggest that the use of self-collected saliva as a non-invasive specimen has proper accuracy and reliability regarding detection of SARS-CoV-2 based on RT-PCR technique.

Objective: High prevalence of Dental and periodontal problems during the gestation period may have a negative effect on oral healthrelated quality of life (OHRQoL) in pregnant women. This systematic review aimed to perform a quality assessment and provide a critical overview of the current research available on OHRQoL in pregnant women. Methods: For this systemic review, all original and peer-reviewed human studies, which investigated OHRQoL of women during pregnancy or postpartum period were searched. Studies were screened in title and abstract for the relevance by two independent investigators. Methodological quality was assessed using modified items recommended by the Newcastle–Ottawa Scale for observational studies. Result: All of the eight included studies had a cross-sectional design. Meta-analysis was not possible due to the heterogeneity on key aspects among the included studies. Thus, the data from the studies were evaluated qualitatively. The overall risk of bias of the included studies was low. Conclusion: The main conclusion of this review is that the presence of signs and symptoms of dental and gingival disease negatively affects the selfperception of OHRQoL in pregnant women. The most affected domains of OHRQoL in pregnant women were related to mental and psychological discomfort followed by physical and functional problems.

Cardiovascular diseases (CVDs) are one of the most important causes for mortality worldwide. Elevated levels of total cholesterol, and particularly LDL-cholesterol (LDL-C) are the main risk factor for acute myocardial infarction (AMI) and ischemic heart disease. The risk of CVDs could be reduced by decreasing the elevated cholesterol levels. β-hydroxy β-methylglutaryl-CoA reductase (HMGCoAR) is the primary and rate-limiting enzyme in the cholesterol biosynthesis pathway. Recently, the crucial role of nutraceuticals in maintaining normal physiological function was established. Nutraceuticals play an important role in preventing several non-communicable diseases such as obesity, CVDs, cancer, diabetes, and reducing hyperlipidemia. Although the effect of nutraceuticals and herbal medicine on CVDs and dyslipidemia was previously investigated thoroughly, the effect of these natural products on HMGCoAR as one of the important enzymes involved in CVDs etiopathogenesis has not yet been investigated. Therefore, the

Background Complex psychological and physiological changes occur in women’s body during pregnancy. These changes affect both oral health status and oral health-related quality of life (OHRQoL). In almost all of the previous cross-sectional design studies on pregnant women, generic OHRQoL instruments have been used to measure OHRQoL. While such instruments may be reliable, they may not be appropriate to evaluate the OHRQoL in special populations like pregnant women. The purpose of this study was to investigate the self-perceived factors affecting the OHRQoL among pregnant women. Methods In this qualitative descriptive study, twenty- seven pregnant women were recruited from four healthcare centers located in Isfahan city, Iran. The interpretative phenomenological analysis was used to collect and analyze the data. Four criteria of credibility, dependability, transferability, and confirmability were implemented through established procedures to confirm the study rigor. Results Three major themes and six sub-themes capturing the impacts of pregnancy on women’s OHRQoL were identified. They covered all areas of life, including daily life, psychological well-being, social life, physical impact, and also barriers to utilization of dental care services. Some new domains such as “dentists’ refusal to treat pregnant women”, “negative feelings about pregnancy” and “concerns about fetal health” were found as important factors which could influence the OHRQoL during pregnancy. Conclusion The findings help to better understand the oral health issues impacting women during pregnancy and to achieve person-centered care and improved oral health outcomes in pregnant women. The conceptual framework created based on the results of this study may help health care workers and policy makers for improving the health of pregnant women.

The NLR family, pyrin domain‐containing 3 (NLRP3) inflammasome is a multiprotein complex that induces caspase‐1 activation and the downstream substrates involved with the processing and secretion of the pro‐inflammatory cytokines interleukin‐1β (IL‐1β) and IL‐18 and tumor necrosis factor‐α (TNF‐ α). The NLRP3 inflammasome is activated by a wide range of danger signals that derive from metabolic dysregulation. Activation of this complex often involves the adaptor ASC and upstream sensors including NLRP1, NLRP3, NLRC4, AIM2, and pyrin, which are activated by different stimuli including infectious agents and changes in cell homeostasis. It has been shown that nutraceuticals and medicinal plants have antiinflammatory properties and could be used as complementary therapy in the treatment of several chronic diseases that are related to inflammation, for example, cardiovascular diseases and diabetes mellitus. Herb‐based medicine has demonstrated protective effects against NLRP3 inflammasome activation. Therefore, this review focuses on the effects of nutraceuticals and bioactive compounds derived from medicinal plants on NLRP3 inflammasome activation and the possible mechanisms of action of these natural products. Thus, herb‐based, natural products/compounds can be considered novel, practical, and accessible agents in chronic inflammatory diseases by inhibiting NLRP3 inflammasome activation.