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Introduction: Recent studies have demonstrated that hypothermia after hemorrhagic shock (HS) can decrease need of fluid therapy and increase arterial pressure that results in increase the survival rate. But it has not been determined how hypothermia causes these beneficial effects. This study reviews hypothermia effects in this area.
Materials and Methods: This is an experiential study in which 24 rats were divided into four groups. Rats were anesthetized by pentobarbital. In groups 1and3, bilateral renal sympathectomy was done and in the groups 2 and 4 renal nerves remained intact and only lateral incisions were done to preserve similar conditions. Then rats underwent HS phase (phase I) for 90 minutes, by withdrawing 4-6 ml of blood during 10 mines. After shock induction, only in groups 1 and 2, body temperature was lowered to 32oC. At the end of phase I, rats underwent resuscitation phase (phase II) by reinfusion of blood & additional Ringer Lactate to retain normal arterial pressure. Stage II lasted 60 minutes.
Results: In hypothermic groups (1 and 2) in comparison to normothermic groups (3 and 4) there was less blood or fluids needed for resuscitation (p<0.05). Arterial pressure before shock was the same in all groups but at the end of phaseII was higher in hypothermic ones (p<0.05).
Conclusion: It seems that mild hypothermia has beneficial effects on survival of animals with HS. Although it is obvious that intact kidneys have vital role in maintaining body fluid balance during HS, but it seems hypothermic rats requires lesser fluid therapy even without nerve of kidney. More studies could be probably required to confirm this.

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Introduction: Clubfoot is one of the most common foot deformities in children. The initial treatment of clubfoot is nonsurgical. The succes rate of this treatment is 5-80%. If clubfoot does not respond to this treatment, surgery is indicated. Surgical treatment of clubfoot has several complications. The preferred method of surgical release in textbooks is a modified Mc Kay procedure with Cincinnati incision but it may have various complications such necrosis, excessive scar, infection, dehiscence and recurrence. The purpose of this article is to investigate surgical treatment of clubfoot with two incision procedure instead of Cincinnati incision. Materials and Methods: In this descriptive study 50 children (81 feet) with clubfoot disease who did not respond to nonsurgical treatment, since 1999 until 2002, in Al-Zahra hospital were selected and underwent soft tissue release procedure by posteromedial and lateral incisions. After operation they were followed for at least two years. Every six months patients were assessed for early postoperative complications, clinical and radiologic recurrence. Data was presented using descriptive statistics. Results: 74% of patients were male. Their mean age was 3.40.69. There was positive family history in 14% of patients. Clinical recurrence was seen in 6 patients, (9 feet) (5 male, one female) that all had bilateral involvement. The most common type of recurrence was metatarsus adductus. There was no skin necrosis or deep wound infection after surgery but 2 cases of superficial infection was seen which were treated by drugs. Conclusion: Regarding the excellent results of this procedure and obtained correction and the least skin complications in comparison to textbooks we suggest the two incision procedure instead of Cincinnati incision in treatment of most club foots

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Introduction: This study was to examine the effects of endurance training and high-fat diet in brain-derived neurotrophic factor (BDNF) in the male adult rat hippocampus.

Materials and Methods: Twenty eight Wistar rats were divided into four groups: (1) Regular diet-sedentary (RD-Sed), (2) Regular diet-Exercise (RD-Exe), (3) HF-sedentary (HF-Sed), and (4) HF- Exercise (HF- Exe) RD-Sed group was regarded as control. Animals in exercise groups received 8-wk endurance training and animals in HF groups were exposed to the HF diet for 8-wk. Hippocampal BDNF protein was assessed using commercial ELISA kits and the data were analyzed by one-way ANOVA. Statistical differences were considered significant at p<0.05.

Results: The results showed that the endurance training had no significant increase in BDNF protein level comparison with the RD-Sd and HF-Sed groups moreover the high-fat diet had no significant effect in BDNF protein level.

Conclusion: According to results of present study, looks applications of endurance training can increase amount of hippocampus BDNF protein level.