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Abstract Background and objectives: Acquired immune deficiency syndrome(AIDS) is one of the most well-known disease in the world .It is not only A heaththrapeutic problem but also with politic ,social, cultural and economic aspects. Paying attention to high-risk groups such as Lab staff is important. we decided to study and compare the knowledge of public and private Laboratories staff. Material and Methods: This cross sectional study, descriptive-analytic,was conducted on 350 personnel of private laboratories and educational centers of Shiraz University of Medical Sciences,2011.We collected Information by using a questionnaire including three parts of demographic characteristic questions, questions about knowledge in different fields of AIDS and those related to the performance of personnel. The results were reported as tables and graphs and analyzed by ANOVA,t-test and square. Results: The data, in different areas of AIDS, in public and private laboratories are similar and the difference statistically is not significant. Regarding to symptoms and treatment, the knowledge of privale Lab staff is higher than stste ones and this difference is significant (P=0.01).As a whole,the results show the knowledge of staff about the transmission modes(92.7%),the pathologic agent(99.2%),at risk people (61.2%)and preventive measure (53.1%).both group have good practice in wearing gloves and using disposable syringes.Regarding to disposing infectious waste material,private and state center practice are 92.6% and 77%,respectively. Conclusion: Based on the result,the knowledge relating to preventive procedures and at risk people of AIDS is not enough.Thereforeit is a necessity to hold in service training for Lab staff,stressing on disposing infectious waste materials. Key words: AIDS, laboratory personnel, knowledge, practice

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Background and objectives: The coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2, a newly emergent coronavirus, first recognized in Wuhan, China in December 2019. Early identification of laboratory indicators helps in distinguishing severe patients from mild to moderate counterparts and can facilitate medical interventions, thereby lowering the mortality rate. The present study was done to evaluate the role of hematological parameters and basic coagulation parameters in the assessment of the severity of COVID-19.
Methods: This retrospective observational study was done at a tertiary care institute from May 2020 to May 2021. Hematological and coagulation profile was studied in 200 confirmed COVID-19 cases. Data related to age, gender, and clinical features were retrieved from patients’ records. Laboratory findings such as complete blood count neutrophil to lymphocyte ratio, platelet to lymphocyte ratio, and coagulation parameters in different categories were compared.
Results: The majority of patients were males (59.5%) and with mild illness (52.5%). Moderate and severe illness was present in 30% and 17.5% of cases, respectively. The frequency of anemia, leucopenia, and thrombocytopenia was 62.5%, 6%, and 5.5%, respectively. Overall neutrophilia was seen in 40.5% of cases, whereas lymphopenia was seen in 39% of cases. Coagulation parameters were also much deranged in moderate and severe cases as compared to mild cases.
Conclusion: The hematopoietic and hemostatic systems are significantly affected by COVID-19. Careful evaluation of laboratory parameters assists clinicians in formulating a tailored treatment approach and in predicting disease severity.
 

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Background and objectives: Considering the importance of aging and the associated physiological changes, as well as the effects of exercise on angiogenesis and cardiac index, this study aimed to compare continuous and periodic exercise in form of high-intensity interval training (HIIT) on serum levels of nitric oxide (NO) and vascular endothelial growth factor (VEGF) in old rats.
Methods: In this study, 30 old male rats were randomly divided into three groups: continuous training (n=10), HIIT (n=10), and control group (n=10). Interventions were performed for 8 weeks. To evaluate the research variables, 72 hours before the first training session and after the last training session, 3 ml of blood were taken from the tails of the rats. One-way analysis of variance was used to analyze the findings and Levene's test was used for assessing the homogeneity of variance. All statistical tests were performed using SPSS 17 software at a significance level of 0.05.
Results: Both training exercises significantly increased NO and VEGF levels compared to the control group (p<0.05).
Conclusion: The results of this study showed that 8 weeks of continuous and interval training cause a significant increase in the level of angiogenic factors in old rats. Therefore, these exercises and especially alternative exercises can be used as a suitable way to increase angiogenesis in the elderly.

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Aim: The global distribution of Klebsiella pneumoniae that produce carbapenemase has been gradually increasing.This present study aimed to investigate the molecular characterization of carbapenem-resistant Klebsiella pneumoniae isolates from various clinical samples. Materials and Methods: In this study, 401 bacteria of Klebsiella isolates were isolated from various clinical samples according to standard protocol. The twelve carbapenem-resistant genes of Klebsiella pneumoniae isolates were detected using multiplex polymerase chain reaction (PCR). Results: Multiplex polymerase chain reaction (PCR) for identifying Class A β-lactamases producers (KPC), Class B β-lactamases producers (NDM), and Class D β-lactamases producers (OXA-48) were done. It was noted that 10 isolates expressed KPC followed by one isolate expressed NDM and one isolate expressed OXA-48. Conclusion: In the present study conclude that CP-CRK is a major health problem in the coming years and hence it is necessary to take all adequate measures to identify the resistant strains. Continuous monitoring of these resistant mechanisms is required to establish the changes in the prevalence and sensitivity pattern of MDR Klebsiella isolates. Urgent infection control measures coupled with antibiotic stewardship and strengthening of the healthcare infrastructure are to be instituted in our setting to prevent the spread of these Carbapenem-resistant genes of Klebsiella pneumoniae (KPC). Larger multicenter studies are required to thoroughly assess risk variables and historical trends in order to comprehend the dynamics of spread and efficient management strategies.