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Background and Objective: Medicinal drug interactions are one of the problems caused by irrational drug prescription. It eigher change the therapeutic effect or cause drug toxicity. This study was performed to determine the prevalence of medicinal drug interactions in medicinal prescriptions in Golestan province, north of Iran.

Methods: In this descriptive study, 1100000 medicinal prescriptions under contract with the Golestan province health insurance organization were assessed for drug interactions during 20 March-
20 September 2012.

Results: Drug interactions frequency was 6262 (0.66%). 35.5%, 63.1% and 1.4% of prescriptions were severe, moderate and mild interactions, respectively. The most common severe, moderate and mild drug interactions related to Atorvastatin-Gemfibrozil (13.67%), Ceftriaxone- Gentamicin (9.05%) and Lithium Carbonate-Haloperidol (2.56%).

Conclusion: In view of moderate and severe medicinal drug interactions in physicians' prescriptions, health system should plan a comprehensive program to improve awareness and effective monitoring to reduce medicinal drug interactions.

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Background and Objective: Considering the importance of coverage and quality of data in Golestan population-based Cancer Registry (GPCR), northern Iran. This study was conducted to determine the effect of the referral of cancer patients to medical centers outside Golestan province on the coverage of the population-based cancer registry program.
Methods: This descriptive-analytic study was performed on all cancer patients registered in the diagnostic centers of Golestan province, northern Iran during 2008-10. Data of patients referred to the centers of the province from the bank of the Golestan province cancer registry program and data of patients referred to the centers outside the province were received from the Ministry of Health Department of Cancer. Data were analyzed using the record linkage method.
Results: A total of 6083 new cases of cancer were registered in Golestan province. According to the cancer data, 678 (11%) of them were referred to outside of Golestan province centers. 343 of these 678 patients (50.6%) were found as duplicate records between the two datasets. The most frequent cases were gastric cancers (70.4%), breast (63.5%) and esophagus (62.5%).
Conclusion: This study suggested that referrals of cancer patients to centers outside the Golestan province may result in an underestimation of about 5% in GPCR. This level of underestimation seems to have no considerable effects on completeness and quality of data in the GPCR.

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Background and Objective: Intrauterine growth restriction (IUGR) is an obstetrical complication. IUGR increases the chance of neonatal death and obstetrical complications in comparison with normal pregnancy. Timely diagnosis of this condition allows effective interventions that decrease the morbidity and mortality. This study was done to compare of superior vena cava to aorta diameter ratio in three vessel view in fetuses with intrauterine growth restriction and normal growth fetuses.
Methods: This case control study was performed on 60 mothers in 25 to 37 weeks of pregnancy who were referred to radiology department of a hospital in Iran during 2018-19. 30 patients were diagnosed with IUGR and were included as case group. 30 healthy fetuses were included as control group. Routine ultrasonography was performed for evaluating placenta, fetuse, and amniotic fluid. Also, colour Doppler sonography was performed on umbilical vessels along with superior vena cava and ascending aorta for definite diagnosis of IUGR. Demographic data regarding fetuse’s age, pregnancy status, number of parities, and age of mother were also accumulated. The superior vena cava/aorta ratio (SVC/AO) was compared in IUGR and healthy fetuses. Based on their amniotic fluid, fetuses were divided into normal and mild oligohydramnios.
Results: There was a significant difference in SVC/AO diameter index between case and control groups (P<0.05). Mean SVC/AO ratio was significantly higher in IUGR fetuses in compared to healthy fetuses. There was no significant difference between normal and oligohydramnios fetuses either in case or control groups.
Conclusion: Implementation of SVC/AO diameter index in three vessels view sonography in screening programs for pregnant women can reduce neonatal morbidity and mortality.

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Background and Objective: Stroke has a high prevalence and is associated with a high premature mortality rate. Thus, it is important to identify the effective factors in increasing the incidence of stroke. The aim of this study was to investigate the role of seasonal changes and environmental factors in the occurrence of stroke.
Methods: This descriptive-analytical study was done on 3,639 patients including 3,102 (85.3%) with ischemic stroke, 472 (12.9%) with intracerebral hemorrhage and 65 (1.9%) with subarachnoid hemorrhage patients. After measuring environmental factors such as air temperature, air pressure, humidity and geomagnetic field, admission data of stroke patients between 2015-2019 were extracted from the Sayyad Shirazi Hospital information system.
Results: The mean occurrence of intracerebral hemorrhage was highest in winter, especially in January and March, and lowest in summer, especially in July and August. Intracerebral hemorrhage had a positive significant correlation with air pressure (P=0.001, r=0.452) and a negative correlation with ambient temperature (P<0.001, r= - 0.457). Subarachnoid hemorrhage and ischemia were not related to the season or the month. It was also found that ischemic stroke had a significant positive correlation with geomagnetic field fluctuations. Subarachnoid hemorrhage was not associated with any of the variables, but intracerebral hemorrhage was significantly positively associated with air pressure and inversely associated with temperature.
Conclusion: This study illustrated that winter, low temperature, high air pressure and high geomagnetic fluctuations are associated with a higher risk of stroke. Therefore, the underlying physiopathological causes of this relationship should be carefully investigated in future studies.
 

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Background and Objective: Toll-like receptors (TLRs) located in the fallopian tube epithelial cells play a crucial role in the immunological response to sperm and pathogens. The present study aimed to compare the function and response of TLR3, TLR4, and TLR5 receptors in the presence of sperm under both physiological and pathological conditions in vitro.
Methods: In this descriptive laboratory study, OE-E6/E7 cells were cultured with fresh sperm samples obtained from normozoospermic individuals (n=10) and specific ligands for TLR3, TLR4, and TLR5 receptors in three groups consisting of sperm, specific ligands, and sperm + specific ligands. A control group was also included without adding sperm or ligand. The concentrations of IL-6 and IL-8 secreted from OE-E6/E7 cells in all four groups were determined using the ELISA method.
Results: Exposure of sperm and specific ligands to TLR3, TLR4, and TLR5 receptors in fallopian tube epithelial cells led to a significant increase in the concentration of IL-6 and IL-8 cytokines. There was no significant difference in the secretion of these cytokines from OE-E6/E7 cells between the two groups of ligand and ligand + sperm.
Conclusion: The response of fallopian tube epithelial cells to sperm exposure through TLRs leads to an increase in cytokine secretion. However, simultaneous exposure of sperm and TLR-specific ligands does not result in a cumulative increase in cytokine secretion. Therefore, it is plausible that the TLR signaling pathway may be regulated negatively by some other factors. Further studies are required to investigate this issue.