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Introduction: Oxidative stress may play a critical role in neurodegenerative disorders but the relation between oxidative stress and learning ability in normal rats is not investigated, so the aim of this study was to investigate the correlation between oxidative stress and two way active avoidance learning in Wistar rats. Materials and Methods: This is an experimental research. 14 Wistar rats were assigned for assessed learning ability in shuttle box. One day after shuttle box learning, cerebrospinal fluid (CSF) and blood samples were obtained. Concentration of Nitric Oxide and Ferric reduction/antioxidant power were assessed. Data was analyzed using Pearson correlation test. Results: The results of the present study demonstrate that there are positive correlation between shuttle box learning ability and Ferric reduction/antioxidant power (p<0.001, r =0.66 4) and Nitric Oxide concentration (p<0.001, r = 0.724) in serum, but not in CSF. Conclusion: The results of this study suggest that high concentration of antioxidant power and Nitric Oxide concentration in blood can improve shuttle box learning in rats

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Introduction: While elderly people enter the hospital in biological crisis, family caregivers enter the hospital in psychological crisis. But professional caregivers haven’t adequate knowledge of family caregivers' experiences. Therefore they forget that family caregivers are in suffering equally. Since suffering is a significant concept in nursing science and knowing and comprehending sources of suffering in family caregivers by professional caregivers is very important, this study is done to describe the nature and structure of sources of suffering in family caregivers of hospitalized elderly patients. Materials and Methods: This is a qualitative study with phenomenological method. Population of the research is all elderly patients' families that were hospitalized in one of the hospitals of Isfahan University of medical sciences. Sampling method was purposive and continued until data saturation. The numbers of participants are 12. Data were gathered through in-dept interview and data analysis done by “Parse” method that was not used in Iran. Results: The finding of this research is summarized in these core concepts: Patients and therapeutic interventions as source of suffering, hospital as source of suffering, disturbance in family and social life as source of suffering, self neglect as source of suffering. These concepts will be discussed in the full article. Conclusion: Participants' experiences reflect the need for planning interventions such as developing supportive groups, providing facility and instruments and continuous support for family caregivers during hospital stay. Also results show that educational programs are necessary for effective adaptation in family caregivers.

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Background: Breast Cancer is the most common malignancy and is the second largest cause of death among 35-55 years old women. The aim of this study is explore and to describe women's experiences with breast cancer for achieving a deeper comprehension of their individual experiences. Methods and Materials: This is a qualitative study with a phenomenological approach. Sampling method was purposive and continued till data saturation. Twenty two participants (patients,families and treatment team) attended in the study.Data were collected by using in-depth interviewing and were analyzed by “Parse”method. We tried to analyze qualitative data based on valid criteria. Results: The findings of this research were summarized into four core concepts:delay in diagnosis and treatment, treatment rejection, drowning in suffering (reaction to disease,facing with outcome of treatment,exposure to treatment system, ineffective care and disturbance in daily life of the family) and moving toward normal life. Conclusion: Knowledge of treatment team from the expriences of women suffering from breast cancer helps them to play a better role in their treatment. It seems, this is essential for make a shift from terminal treatment to early diagnosis. Also it emphasise to use of source for support of patients.

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Background: Q fever is a zoonotic agent that is endemic in the many parts of the World. It has animal origin as considered as an emerging and re-emerging zoonose in many countries, including Iran. Cattle, sheep, and goats are the primary reservoirs for Q fever. Organisms are excreted in milk of infected animals. This study was conducted to determine the prevalence rate of Coxiella burentii in raw samples obtained from sheep in Bonab.

Materials and Methods: This study was carried out from Autuman 2014 to Winter 2014. Overall, 120 milk samples were collected from 100 dairy cattle breeding complexes and the diagnosis of Coxiella burnetii was confirmed by Nested-PCR method.

 Results: In this study, in total, 26 samples (21.66%) were found to be positive for the presence of Coxiella burnetii.

 Conclusion: Considering the importance of the bacterium, Coxiella burnetii, rapid and accurate diagnosis is of great significance. Due to high accuracy and high speed, molecular techniques are mostly effective in the diagnosis. Thus, the localization of molecular techniques in the diagnosis of Q fever is highly recommended. The results indicated that Cattle's milk could be a potential reservoir of Coxiella burnetii in Iran.

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Background: Laryngeal carcinoma induce immune system suppression in tumour micro environments with unknown mechanism. Toll like receptors (TLRs) are important molecules which play a critical role in the management and induction of immune responses. In this regard, the importance and the role of TLR 2, 4 and 9 have not been studied together in laryngeal cancer. The present study aims to evaluate the expression level of TLR2, TLR4 and TLR9 in patients with laryngeal carcinoma.

Materials and Methods: 89 tumour samples and 35 tumour-free tissues were obtained from laryngeal carcinoma male patients and the expression level of TLR2, TLR4 and TLR9 was analysed using Real-time PCR method.

Results: The expression level of TLR2 was increased as the result of increasing lymph node involvement, pretumoral involvement and regional metastasis. Also, the TLR4 gene expression levels were increased 1.5 fold in patients with lymph node involvement. The expression Level of TLR9 was increased by increasing stage and primary tumour involvement. The expression pattern of TLR2 and TLR4 in tumour and tumour-free tissues was the same, while TLR9 gene expressions show higher level in tumour tissues than its normal tissue. None of our findings were statistical significant.

Conclusion: we have shown that the expression status of TLR2, TLR4 and TLR9 in patients with laryngeal cancer was correlated with their clinicopathologic features. Additionally, the expression level of TLRs in cancerous and non-cancerous tissues shows no significant changes.

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