Effect of using biodegradable film constituting red grape anthocyanins as a novel packaging on the qualitative attributes of emergency food bars during storage.

This study presents a novel packaging film based on whey protein isolate/κ-carrageenan (WC) with red grape pomace anthocyanins (RGA) to investigate its impact on some qualitative attributes of emergency food bars (EFBs) for 6 months at 38°C. Increasing the RGA dose in WC films from 5% (WCA5) to 10% (WCA10) reduced hydrogen bonding between polymers and polymer homogeneity in the matrix according to FTIR and SEM. Tensile strength slightly declined in WCA5 from 7.47 ± 0.26 to 6.97 ± 0.12, while elongation increased from 27.74 ± 1.36 to 32.36 ± 1.25% compared to WC film. The maximum weight loss temperature (TM) increased by incorporating 5 wt% RGA from 182.95°C to 244.36°C, whereas TM declined to 187.19°C in WCA10 film. WVP and OTR slightly changed in WCA5 (from 7.83 ± 0.07 and 2.57 ± 0.18 to 8.41 ± 0.03 g H2O.m/m2.Pa.s × 10-9 and 1.79 ± 0.32 cm3 O2/m2.d.bar, respectively), but significantly impaired in WCA10 compared to WC film. WCA5 and WCA10 films had high AA%, 68.77%, and 79.21%, respectively. WCA10 film presented great antimetrical properties against Staphylococcus aureus with an inhibition zone of 6.00 mm. The light transmission of RGA-contained films in the UV spectrum was below 10%. The WCA5 film effectively restrained moisture loss and hardness increment until the end of the storage period, which were 14.33% and 28.76%, respectively, compared to day 0. Antioxidant films provided acceptable resistance against oxidation to EBF treatment. Sensory panels scored WCA5 and WCA10 higher in overall acceptance with 5.64 and 5.40 values, respectively, while complaining about the hardness of OPP treatment. The results of this investigation demonstrated that incorporating RGA, preferably 5 wt%, into WC-based film effectively improved the qualitative properties of EFB during the 6-month shelf life. This film might be a promising alternative for packaging light and oxygen-sensitive food products.

Comparison of the effect of bioterrorism education through two methods of lecture and booklet on the knowledge and attitude of nurses of Shams Al-Shomus Nezaja Hospital.

BACKGROUND: Today, considering the importance of bioterrorism, it may be time to assess the risk of bioterrorism as an important priority. Nurses, as the broadest group of therapy group, are very influential in this regard. General aim: To determine the impact of bioterrorism education through two methods of lectures and booklets on the knowledge and attitude of nursing staff. Practical Aim: Minimizing the damage caused by bioterrorism attacks by empowering nursing staff. MATERIALS AND METHODS: This two-group semiexperimental intervention study was performed as a before and after education intervention with the participation of 80 nursing staff of Shams Al-Shomus Nezaja Hospital affiliated to Health Administration of Islamic Republic of Iran Army Ground Forces. The study population included all hospital nursing staff in 2021. The inclusion criteria included having a willingness and informed consent to participate in the study and exclusion criteria included unwillingness to continue cooperation and failure to complete more than 10% of the questionnaire by the subject. This study was performed on 77 nurses in 2021. The nurses were divided into two groups: lecture and booklet. First, the pretest was completed by the nurses. After the educational intervention, both groups completed the posttest. Both groups then completed the questionnaire again after about 2 weeks. First, all the data were measured for normal distribution by the Kolmogorov-Smirnoff test. Statistical description was expressed for the variables with normal distribution as the ratio of geometric mean ± standard error and for abnormal variables as mean ± standard error. To compare the means of the studied quantitative variables, t-test and Wilcoxon matched-paired statistical tests were used. The significance level was considered <0.05. SPSS.16 and Graph Pad Prism 8.0.1 softwares were used to analyze the statistical data. RESULTS: Using both methods is effective in improving the level of knowledge and betterment attitude, but according to the paired t-test in comparison of the two groups, at intervals immediately after training and 2 weeks after training, a significant increase in the average knowledge score of the lecture group Statistically shows (P < 0.001). However, the analysis of attitude scores was performed between the two groups of lectures and booklets, which did not show statistically significant changes between them. CONCLUSIONS: One of the most important issues in the performance of medical staff in bioterrorism attacks is useful, effective, correct, and sufficient training. According to the results of the present study,bioterrorism training leads to increasing the level of knowledge and betterment the attitude of nurses in the field of bioterrorism. Therefore, the inclusion of training courses in medical centers, especially military medical centers, is necessary and sensitive.

The biological weapons threats and coping strategies for health promotion.

The biotechnology revolution and the emergence of new ways to change the genetic material of an organism have led to an increased risk of biological wars. Coping strategies against these threats is very important to improve the health of people. Therefore, due to the importance of this issue, this study is aimed to review the scope of using biotechnology and genetic engineering in wars and coping strategies in all over the world. In this review study, database includes of PubMed, Web of Science, Google Scholar, Scopus, and Science Direct were searched. The search was limited to reviewed articles in English published between 1990 and 2020. The primary search results generated 148 relevant references. After eliminating the duplicates and articles which were not related to the review of the abstract, 11 references were identified for inclusion in this review. Based on the results of these studies, the advances in genetic engineering can lead to the development of new weapons for other types of conflict and war scenarios, secret operations, and sabotage activities. Rapid developments in biotechnology and genetics have created environmental, ethical, political, and social challenges for many communities. Increasing awareness and sensitivity, monitoring, and building capacity for effective coping are essential. Biotechnology areas that will probably significantly contribute to countering biological weapons include recognizing the human genome, strengthening the immune system, identifying bacteria and viruses' genome, equipment for biological identification, new vaccines, new antibiotics, and anti-viral drugs must be monitored.

Safety and efficacy of Favipiravir in moderate to severe SARS-CoV-2 pneumonia.

BACKGROUND: We examined the safety and efficacy of a treatment protocol containing Favipiravir for the treatment of SARS-CoV-2. METHODS: We did a multicenter randomized open-labeled clinical trial on moderate to severe cases infections of SARS-CoV-2. Patients with typical ground glass appearance on chest computerized tomography scan (CT scan) and oxygen saturation (SpO2) of less than 93% were enrolled. They were randomly allocated into Favipiravir (1.6 gr loading, 1.8 gr daily) and Lopinavir/Ritonavir (800/200 mg daily) treatment regimens in addition to standard care. In-hospital mortality, ICU admission, intubation, time to clinical recovery, changes in daily SpO2 after 5 min discontinuation of supplemental oxygen, and length of hospital stay were quantified and compared in the two groups. RESULTS: 380 patients were randomly allocated into Favipiravir (193) and Lopinavir/Ritonavir (187) groups in 13 centers. The number of deaths, intubations, and ICU admissions were not significantly different (26, 27, 31 and 21, 17, 25 respectively). Mean hospital stay was also not different (7.9 days [SD = 6] in the Favipiravir and 8.1 [SD = 6.5] days in Lopinavir/Ritonavir groups) (p = 0.61). Time to clinical recovery in the Favipiravir group was similar to Lopinavir/Ritonavir group (HR = 0.94, 95% CI 0.75 - 1.17) and likewise the changes in the daily SpO2 after discontinuation of supplemental oxygen (p = 0.46) CONCLUSION: Adding Favipiravir to the treatment protocol did not reduce the number of ICU admissions or intubations or In-hospital mortality compared to Lopinavir/Ritonavir regimen. It also did not shorten time to clinical recovery and length of hospital stay.

Cardiac Complications in COVID-19: A Systematic Review and Meta-analysis.

BACKGROUND: The newly emerged coronavirus disease 2019 (COVID-19) seems to involve different organs, including the cardiovascular system. We systematically reviewed COVID-19 cardiac complications and calculated their pooled incidences. Secondarily, we compared the cardiac troponin I (cTnI) level between the surviving and expired patients. METHODS: A systematic search was conducted for manuscripts published from December 1, 2019 to April 16, 2020. Cardiovascular complications, along with the levels of cTnI, creatine kinase (CK), and creatine kinase MB (CK-MB) in hospitalized PCR-confirmed COVID-19 patients were extracted. The pooled incidences of the extracted data were calculated, and the unadjusted cTnI level was compared between the surviving and expired patients. RESULTS: Out of 1094 obtained records, 22 studies on a total of 4,157 patients were included. The pooled incidence rate of arrhythmia was 10.11%. Furthermore, myocardial injury had a pooled incidence of 17.85%, and finally, the pooled incidence for heart failure was 22.34%. The pooled incidence rates of cTnI, CK-MB, and CK elevations were also reported at 15.16%, 10.92%, and 12.99%, respectively. Moreover, the pooled level of unadjusted cTnI was significantly higher in expired cases compared with the surviving (mean difference = 31.818, 95% CI = 17.923-45.713, P value <0.001). CONCLUSION: COVID-19 can affect different parts of the heart; however, the myocardium is more involved.

Immunity to Diphtheria and Tetanus in Army Personnel and Adult Civilians in Mashhad, Iran.

This study aimed to investigate serologic immunity to diphtheria and tetanus in army personnel and a sample population of adult civilians in Mashhad, Iran. Army personnel (n = 180) and civilians (n = 83) who presented at Mashhad army hospital participated in this study. Diphtheria and tetanus antitoxin levels were determined by enzyme-linked immunosorbent assay. Approximately 77% and 94% of army personnel aged 18-34 years had at least basic protection against diphtheria (antitoxin level ≥0.1 IU/mL) and tetanus (antitoxin level >0.1 IU/mL), respectively. For civilians in this age group, the proportions were 76% for both diseases. Antitoxin levels waned with age. Thus, participants older than 50 years had lower immunity; this decrease in immunity was more pronounced for tetanus than for diphtheria in both army personnel and civilians. For both diseases, geometric mean antitoxin titers and the proportion of participants with at least basic protection were higher in subjects with a history of vaccination in the last 10 years (P < 0.001), higher in men than women, and in army personnel than civilians in each age group. Young army personnel and civilians (18-34 years old) had adequate immunity to diphtheria and tetanus. However, the large number of susceptible older adults (>50 years old) calls for improved booster vaccination protocols.

HAV Immunity in Iranian Medical Students.

BACKGROUND: Hepatitis A, a fecal-oral transmitted disease, which has been considered endemic in developing countries, seems to change its pattern in developing countries because of their improved socioeconomic status. OBJECTIVES: In the present study, we aimed to determine the need of vaccination in 270 students at AJA University of Medical Sciences. MATERIALS AND METHODS: The serum level of anti-HAV antibody was checked in 270 students of AJA University of medical students, and effect of different factors, including age, gender, pre-university entrance exam region, familial education, familial income, clean water availability, and previous history of jaundice were tested. RESULTS: Of total 270 students, 30 were female. Their age ranged between 18 and 30 years old with the mean age of 20.58 years and just 34% of students had positive level of anti-HAV antibody. Age and sex had no role in positive serum level of anti-HAV antibody. According to analyzed data, lack of clean water availability, pre-university entrance exam region, lower family education, and poor health status estimation increased statistically the risk of HAV infection. CONCLUSIONS: Because 66% of students were anti-HAV antibody negative and they will work as health care workers in future, our study suggest vaccinating all students accepted at AJA University of Medical Sciences.