The Dual Role of Non-coding RNAs in the Development of Periodontitis.

This review aims to sum up how Non-coding RNAs (ncRNAs) regulate the development of periodontitis and provides a new perspective for understanding the pathogenesis of periodontitis. We explored the ncRNA's dual role in the development of periodontitis by summarizing evidence from previous in vivo and in vitro studies as well as clinical samples. In our review, the downregulation of 18 miRNAs, 22 lncRNAs and 10 circRNAs demonstrates protective roles in periodontitis. In contrast, the expression of other 11 miRNAs, 7 lncRNAs and 6 circRNAs are upregulated in periodontitis, which promote the progression of periodontitis. These dysregulated ncRNAs exert their protective or destructive roles by mainly influencing cell proliferation, differentiation and apoptosis via cross-talking with various molecules or signaling pathways. Our findings suggested which and how ncRNAs promote or delay the progression of periodontitis, which may greatly contribute to diagnose and therapy development of periodontitis based on ncRNAs in the future.

Perspectives of nursing directors on emergency nurse deployment during the pandemic of COVID-19: A nationwide cross-sectional survey in mainland China.

AIMS: The aim of this study is to investigate the situation and perceptions of nursing directors about emergency nursing staff deployment in designated hospitals during the pandemic of COVID-19 in mainland China. BACKGROUND: The pandemic of COVID-19 has significantly depleted health care resources, leading to increased burden of nursing care and staffing and exacerbating the crisis in health care facilities. Currently, how to effectively plan and schedule nursing staffing in the pandemic still remains unknown. METHODS: From 14 July 2020 to 8 September 2020, 62 nursing directors of designated hospitals in mainland China were invited to participate in a cross-sectional online survey for their perceptions of nursing human-resource allocation during the pandemic of COVID-19. RESULTS: A total of 55 valid questionnaires were collected, showing that 96.36% of the hospitals had emergency nursing organizations and management systems during the pandemic, 96.36% had well-established scheduling principles for nursing human resources and 54.55% of hospitals had human-resource scheduling platforms. All the hospitals had trained emergency nursing staff in infection control (55, 100%), work process (51, 92.73%) and emergency skills (50, 90.91%). Most of the participants were satisfied with the nursing staffing deployments at their institutions (52, 94.55%). However, more than two thirds of them believed that their human-resource deployment plans need further improvements (39, 70.91%). CONCLUSIONS: Most of the designated hospitals investigated had established emergency nursing organizations, and management systems, and related regulations for the epidemic. However, the contents mentioned above still need to be further standardized. IMPLICATIONS FOR NURSING MANAGEMENT: The surge of patients in the epidemic was considerable challenge for the emergency capacity of hospitals. In the future, we should pay more attention to the following aspects: building emergency nursing staffing platforms, increasing emergency human-resource reserves, establishing reliable communication channels for emergency response teams, improving the rules and regulations of emergency human-resource management, offering more training and drills for emergency-related knowledge and skills and giving more focus on bio-psycho-social wellbeing of nurses.

[Mental status of surgical medical staff who treated or did not treat the victims in Wenchuan earthquake].

OBJECTIVE: To compare and analyze the mental status of medical staff between Orthopedics Department who treated the victims in the earthquake and other surgical departments who did not treat the victims in the earthquake, and to provide evidence for psychological prevention and intervention in the earthquake aids. METHODS: Cross-sectional study was used to choose staff in the Orthopedics Department who treated the victims and other surgical departments who did not treat victims in the earthquake as eligible subject with convenient sampling. The research tool is Symptom Checklist-90. The questionnaire was done by participants with the same psychological instruction. Data were analyzed by SPSS16.0. RESULTS: The scores in somatization, depression,anxiety and opposition, phobic anxiety in the orthopedic staff were significantly higher than those of the other surgical staff (P < 0.05). CONCLUSION: There is disorder in mental health of medical staff in Orthopedics Department and mental intervention is needed.

[Determination of lead with GFAAS using online flow injection].

A cheap, rapid and sensitive method for the determination of trace amount of lead in water samples by graphite furnace absorption spectrometry coupled with online flow injection preconcentration with ammonium pyrrolidine dithiocarboxylate chelating cellulose (CC-APDC) was developed. There were six steps in the preconcentration of flow injection: first, 0.15 mL nitric acid was used for a complete elution, which exceeded the volume of the graphite tube, so the 40 mL solution was removed before eluting. Secondly, 40 mL maximum concentration elution solution was added to GFAAS by fixed volume sampling to improve the accuracy. In addition, traditional stopping gas measurement was substituted with small flow gas atomization (30 mL x min(-1), preconcention for 1 min) during the removal of high memory effect for ashing stage in graphite furnace, which develops tail-out phenomenon and makes blank value low and steady. Various parameters affecting the adsorption and elution, such as pH of the solution, eluent concentration, sample flow rate etc, were optimized. If miniflow in atomization step was used, the memory effect in the determination of lead by GFAAS could be removed. The CC-APDC was used for preparation and preconcentration. A good precision (RSD = 1.4%, n = 10), high enrichment factor (15) and sample throughput (50 h) with detection limit 0.12 microg x L(-1) were obtained. This method has been successfully applied to the water sample for lead determination with a recovery of 95%-105%.

[Sorption rate equation of 2-mercaptopbenzimidazole chelating cellulose for some heavy metal ions].

Chelating cellulose is of simple preparation, excellent nature and low cost. MBM chelating cellulose (CC-MBM) was prepared with chelating reagent (2-mercaptobenzimidazole) grafted on cotton by indirect etherification method. The approach for separating and preconcentrating trace of Pb, Cd, Cu and Ni has advantages of high exchanging speed, high preconcentration multiple, high selectivity and easy elution. The sorption kinetic properties of CC-MBM for several heavy metal ions have also been studied systematically. It is shown that the sorption rate of CC-MBM is very rapid and the reaching time is short. The relation between the sorption amount and time completely complies with following equation Q/Q infinity = at/(1 + at).