مجله دانشگاه علوم پزشکی اراک
سال ششم شماره 4 (پیاپی 25، زمستان 1382)

stress in the natural reflection of living creatures against internal and external motivations while stress hormones are secretion through cardiovascular, every production, and security systems. Some stress producing factors are muscular activities, anesthetics, surgery, starvation, water deprivation, etc. Thus, we studied effect of prenatal water deprivation stress on hormone level and sexual dimorphic nucleus in male rats.

In an experimental design, adult female and male Wistar rats (180 gr) acquired from Pastor institute and were coupled. Pregnant rats were divided randomly into control and experimental groups. Both groups were maintained under a controlled temperature (20±2°C) and photoperiod (13:11h, light: dark) conditions. Controlled group had food and water available ad lib, but experimental group had access to food and were deprived of water from the beginning of third week of pregnancy to the end of week. At 42 days at birth, male rats were slight anesthetic in order to prepare the blood and morphometric evaluations.

Plasma testosterone average level in experimental group was less than controlled groups (p<0.001), while in the comparison between experimental and controlled groups, progesterone indicates significant increment (p<0.001). There is no statistically significant regarding Estradiol level between both groups. Historical study indicated that the decreased size and number of neurons of MPO and Sch nuclei were significant in experimental compared to controlled ones.

Prenatal water deprivation through affecting MPO and Sch nuclei, approximate inhibition of nuclei and decrease in secretion of Testosterone cause the emergence unusual sexual behavior and similar female sexual behaviors in male experimental rats in the postnatal and maturity.

Postoperative hypothermia is physiologically stressful by elevating blood pressure, heart rate and plasma catecholamine concentration. This study conducted to evaluate the effects of intravenous fluids temperature on perioperative hemodynamic situation.

This was a randomized clinical trial study Perioperative pulse rate, blood pressure, intraoperative esophageal and skin temperature were measured in 60 volunteer patients undergoing orthopedic surgeries subjects randomly divided into two groups according to intraoperative IV fluids management. In 30 patients (hypothermia group) all IV fluids infused were at room temperature. In the other 30 patients (normothermia group) all IV fluids were warmed using and dry IV fluid warmer.

The core and skin temperature of hypothermia and normothermia group decreased significantly from induction of anesthesia toward end of surgery but its reduction was more in hypothermia group (P<0.005). Postoperative mean arterial blood pressure increased significantly more in hypothermia group versus normothermia group (P<0.005). Shivering was observed in 21 of 30 hypothermia and 11 of 30 normothermia group (p<0.005) and recovery time was significantly lower in normothermia group (36±5 vs. 26±3 min, P<0.005).

Infusion of warm fluids helps to reduce the variation of postoperative mean arterial blood pressure, core and skin temperature, occurrence of shivering and recovery time.

The two therapeutical methods, ambulatory phelebectomy and stripping, used in the treatment of venous varices seem to have different duration of admission and complications. In this study the variables which seemed to be different between these two approaches have been compared with each other.

In an analytic cross-sectional investigation, 43 patients were operated for venous varices with stripping and ambulatory phlebectomy were studied. Gender, age, type of operation, post- operative complications (hematoma, pain and paresthesia), duration of admission and the duration of operation were recorded for all subjects.

Out of 43 patients, 19 were operated by ambulatory phlebectomy and the other by stripping methods. There was no meaningful difference in the groups with respect to the sex. There was a meaningful difference between both groups with respect to hemetoma (5.3% versus 0%).The average duration of admission and operation in the stripping was virtually more than the ambulatory phlebectomy.

The duration of operation, hematoma, pain and paresthesia was proportionally more in the stripping procedure than the ambulatory phlebectomy. Thus, ambulatory phlebectomy can be more helpful in the treatment of venous of limbs.

Preclampsia is a pregnancy-specific condition characterized by hypertention, proteinuria and generalized edema. The condition usually occurs in the third trimester and word wide is one of the most common causes of maternal mortality and morbidity. No study concerning the immunological etiology and pathogenesis of preclampsia has been done in Iran. The aim of this study was to evaluate the role of some immunological factors involved in the pathogenesis of preclampsia.

This research was a clinical trial study. We measured C3, C4, IgG, IgA and IgM levels in 20 women with preclampsia, 20 normal pregnant women and 20 non-pregnant women matched for age, BMI, parity and gestational age. Seven patients had developed severe and thirteen mild preclampsia. After written informed consent was obtained, blood samples of subject group. Collected serum collected was analyzed for immunological parameters by the single radial immunodiffusion (SRID) method of Mancini.

C4 level was significantly decreased in women with severe preclampsia than in women with mild preclampsia and normal pregnancies, whereas C3 level did not differ between groups. IgG concentration was significantly higher in non-pregnant women than in women with preclampsia and normal pregnancies. There was a significant decrease in IgA concentration in normal pregnant women compared with non-pregnant women. There was a not significant difference between the IgM concentrations of both groups.

Our data show several changes in immunological factors in preclampsia which may contribute to the pathogenesis of the disorder in Iranian women.

Normal growth of children is an index of their health. So growth monitoring is a routine service provided in most health care systems. This study has been performed in order to assess the effectiveness of growth monitoring regarding incidence of failure to thrive (FTT) and head circumference.

There was a historical cohort study in which the children who were 12 -14 months old at the time of study under the coverage of health service of Aboozar health center, Tehran medical university, were evaluated. We used linear, logistic and Cox modeling for detecting statistical association of the distinguished variables.

There was no significant association between number of growth monitoring visits and the size of head circumference (linear model). In addition to, there was a significant association between the number of growth monitoring visits and incidence of FTT (logistic model).

According to our data, it seems that growth monitoring has a preventing role in growth of failure to thrive children.

Peptic ulcer is a mucosal lesion of stomach or deodenum in which acid and pepsin play major pathogenic roles. In general population, Helicobacter pylori (HP) plays an important role in peptic ulcer. Peptic ulcer is more common in chronic renal failure (CRF) but its etiology is unknown.

In a descriptive cross-sectional study, the prevalence of peptic ulcer in CRF patients was studied and its relationship with HP was evaluated. All patients were visited in Tajrish shohada hospital, Tehran. CRF was defined as a serum ceratinin concentration equal or more than 2 mg/dl at least for 3 months. Patients who stressful conditions, or were recieved immunosuppressive or NASID drugs, or drugs for eradication of HP were excluded. Upper GI endoscopy was performed for all patients by gastroentrologists to find out peptic ulcer. Biopsy was taken for HP identification by rapid ureas test.

The mean age of participants was 56 year and 51% of them had GI symptoms. Nineteen of 98 patients with CRF (19%) had peptic ulcer. That 5 of them were positive HP. HP was identified in 45 (46%) of patients.

This study showed that HP is not more prevalent in CRF patients compared to general population. Additionally, peptic ulcer was more common in male patients with CRF than non-CRF subjects.

Nearly, 6% of recently diagnosed cancer in the United States was upon to lymphoproliferate and leukemia and 9% of fatality in cancerous people was upon to these two illnesses. Using some simple, cheap and in-hand tests and special consideration to clinical inspections in suspected subjects provide a faster diagnostic and suitable treatment. It may ultimately promote the quality of life and decline the fatality among patients.

This was a cross-sectional investigation which carried out during a 1.5 years in the form of forward direction. Forty-two lymphoproliferate (28 lymphoblast and 14 Hotchkin) and 21 acute lymphoblastic leukemia (10 acute lymphoblast leukemia and 11 miloid acute leukemia) subjects were evaluated. ESR, LDH and ALP levels were measured in all patients. In clinical examinations, oversizing of lymph nodes, spleen and liver were exactly considered.

According to our results the best tests to rule in and rule out acute leukemia from lymphoprolifeatives were ESR and LDH, respectively. Additionally, The most sensitive and specific evaluations to rule out these two diseases were LDH and oversizing of liver inspection. It was also determined that LDH is the best screening test to rule out leukemia from lymphoproliferate.

Using of simple examinations such as ALP, LDH, ESR and more consideration to oversized spleen, liver and lymph nodes in each suspected patients, we could easily differentiate lymphoproliferate and acute leukemia from each other.

In the 1950s vancomycin was introduced as an effective antibiotic for curing infections caused by methicillin resistant Staphylococcus aureus. Three decade after using vancomycin, resistant coagulase negative staphylococcus to this antibiotic was reported. In this study, we evaluate the Staphylococcus aurous resistant to vancomycin.

During this invesitigatin which lasted for 6 months, 50 Staphylococcus aurous samples were taken from burn wards of each of two Imam-Reza and Gaem hospitals, Mashhad. All selected samples were resistant to methicillin and their MIC to vancomycin was determined.

Of 50 separated bacteria from Imam-Reza and Gaem hospitals subjects, 4 patients had MIC equal to 12.5 mg/ml. In isolated samples from Gaem hospital, one case has MIC equal to 12.5 mg/ml.

With respect to expanding the resistant toward vancomycin, thus it is recommended to inhibit the resistance of this organism in the wards.