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Introduction: In diabetes mellitus the increase of AgII (Angiotensin II), IGF-1(insulin like growth factor-1) and growth hormone induce kidney lesions especially changes in content and thickness of GBM and widening and fusion of podocyte pedicles. In this research for the first time the combination of Losartan (AT1 receptor blocker) and Octreotide (Somatostatin analogue) were used in order to prevent glomerular epithelial lesions.
Materials & Methods: In this experimental study 15 male rats (2 months age) were uninephrectomised from left flank and divided in 5 groups (3 per group). 7 days later diabetes was induced in 2th, 3th, 4th and 5th group by Alloxan (120mg/kg) subcutaneously. 5 days after diabetes induction, the third group received Losartan (5mg/kg/day) orally, 4th group Octretide (10 ŭg/day) subcutaneously and 5th group both two drugs with the mentioned doses for 8 weeks. The 2th group was served as diabetic non treatment group. Kidneys of all groups were fixed by perfusion technique. After second fixation of 1 mm3 cortex parts in Osmium Tetroxide, they were processed in TAAB812 resin for embedding. Thin sections (600 nm thickness) were prepared and investigated by transmission electron microscope qualitatively.
Results: Losartan inhibited fusion and thickening of podocyte pedicles but in some cases couldn,t maintain the 3 layer form of GBM. Octreotide had little effect on inhibition of fusion and thickening of podocyte pedicles and no effect in 3 layer form maintaining of GBM. Combined therapy inhibited fusion and thickening of podocyte pedicles and maintained 3 layer form of GBM but in some cases the lamina rara near endothelium was not seen.
Conclusion: Octreotide have little effect on prevention of glomerular epithelium lesions. However Losartan could prevent glomerular epithelium lesions well, but combined drug therapy showed better results comparing Losartan.

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Introduction: Cystic hygroma is a disorder in lymphatic vessel formation that involves the adjacent organs and can affect them due to its fast growing nature . The main treatment for cystic hygroma is surgical intervention that can have many complications after surgery. Treatments other than surgical interventions is the use of sclerosing agents. The goal of this study is to analyze the effect of Beliomycin in treating cystic hygroma . Materials and Methods: This quasi experimental study was carried out clinically at st-al Zahra and Kashanie hospitals of Isfahan from 1372 to 1383. A checklist including age, sex, cyst location, cystic hygroma volume before and after Beliomycin injection and/or surgery, was completed for each patient. Data was analyzed by T and paired T-Tests. p<0.05 was considered meaningful. Results:The study was carried out on 72 patients. 24 patients were treated with Beliomycin and 48 patient by surgery. Patients age was below 1 month up to 18 years old . Cystic hygroma was mainly located at neck region(46.8%). The average size of cystic hygroma was 103.9±29.66cm3 before Beliomycin injection and 34.91 16.19cm3 after that (p=0.004). and 43.511±7.81cm3 before surgery and 1.39±1.39 cm3 after that(p=0.006). The rate of recurrence of lymphingoma in the surgery treated group was 25.1% and in the group treated with Beliomycin was 29.2% with no significant difference. Conclusion: Regarding the considerable decrease in cyst volume after Beliomycin injection and it,s low complication compared to surgery, this method can be used as a primary treatment or supplementary to surgery.

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Introduction: Due to the absence of frozen section in the majority of hospitals, malignant breast masses are being operated in two admissions first for biopsy and second for mastectomy. With simple and rapid technique of touch imprint (intraoperative cytology) both operations can be done in the same time. In this study the diagnostic accuracy of intraoperative cytology (touch imprint) in malignancy of breast masses is evaluated. Materials and Methods: During 2003 to 2006, reports of touch imprints of 70 patients with breast masses were compared to reports of their permanent section. Based on gathered data, positive and negative predictive value, sensitivity and specificity, and positive and negative likelihood ratio of the test were determined. Results: In 70 patients, 39 cases had malignant and 31 cases had benign masses. In 39 patients with malignant masses, 36 patients had malignant and 3 patients had benign cytologic reports. In 31 patients with benign masses 2 patients had malignant reports in cytology. Therefore sensitivity, specificity and accuracy of touch imprint in diagnosis of malignant breast masses were 92.3%, 93.5% and 92.9% respectively. Conclusion: Because of high specificity of touch imprint, it seems that this test can be done in centers that do not have frozen section for intraoperative diagnosis of malignant breast masses.

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Introduction: Opioids abuse is a nationwide problem in our country. Regarding the potential of these drugs in crossing placenta they can cause many defects in fetuses of human and also animals. In the present study, the effects of maternal Morphine consumption on olfactory bulb development in rats have been investigated. Materials and Methods: Female Wistar rats (weight: 250-300g) were crossed with male rats and the zero time of pregnancy was detected. Existence of vaginal plug and also sperm in vaginal smear were indicators of mating and pregnancy. Experimental group received 0.05 mg/ml of Morphine in drinking water daily. On embryonic day 19, pregnant animals were anesthetized by Chloroform and embryos were taken out surgically. Weight of the embryos was determined by a digital balance and their length (Crown-Rump, Frontal-Occipital, Biparietal, Abdominal-Transfer and Anterior-Posterior diameters) were determined by a caliper. Then embryos were fixed in Formalin 10% and tissues were processed and sectioned and stained in Hematoxilin & Eosin and Bielschwosky staining methods. These sections were investigated for olfactory bulb development by MOTIC software and light Microscope. Data was analyzed using t-test. Results: The decrease in embryonic weight and their diameter for experiment group was significant. In microscopic study, the increase in thickness of mitral layer and the decrease in total number of Tufted, Mitral and Granular cells in experimental group were significant. Conclusion: This study showed that oral Morphine consumption leads to olfactory bulb defects.

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Background: Cutaneous leishmaniasis is a health problem in many areas of Iran. Cutaneous leishmaniasisis reported mostly in the central county of Qom province, including Ghanavat and Qomrood villages. This study was done to identify parasite species in human and rodents in order to illustrate the epidemiologic picture of the disease and provide an appropriate control program in 2010 Materials and Methods: This cross-sectional study was done on microscopic smears of 45 human samples and rodents samples hunted around Ghanavat and Qomrood villages in the central county of Qom province in 2010.In total,15 human samples and one hunted rodent sample were positive. In this study,the DNA of the parasites were extracted from the slides and analyzed by Leishmania specific premiers using ITS1 PCR-amplification (Internal Transcribed Spacer1). PCR (PolymeraseChain Reaction) products were digested by Haelll enzyme. Results: Overall, 15 human samples and one rodent sample from Merioneslibycus species were evaluated by PCR-RFLP (Restriction Fragment Length Polymorphism). After electrophoresis, it was demonstrated that the parasite was Leishmaniamajor in both human and rodent species. Conclusion: PCR-RFLP technique is an effective method to determine Leishmania parasite species in Geimsa stained slides from human and rodent reservoirs. One of the advantages of this technique is that it is possible to recognize the pathogen species of Leishmania parasite without gene sequencing. Besides, PCR-RFLP technique is a method of quite high sensitivity and specificity which can identify parasite species in addition to the diagnosis of leishmaniasis within 24 hours.

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Background: One of the side effects of chemotherapy agents is gonadal suppression leading to infertility. The present study examined the feasibility of using a gonadotropin releasing hormone agonist (GnRH-A) in the prevention of busulfan induced azoospermia in prepubertal mice.

Materials and Methods: In this case and control research, Leuprolide (3.8 mg/kg) was given to prepubertal male mice 2 weeks after or prior to busulfan (40 mg/kg) administration. The animals received one or two doses of leuprolide after busulfan administration with 4 weeks apart. Six weeks after the last leuprolide treatment, the sperm parameters were analyzed icluded sperm count and motility according to the World Health Organization criteria.

Results: At the time of scarifies, testicular weight were increased in animals receiving leuprolide. In animals receiving leuprolide pretreatment, the percentage of progressive and immotile sperm was significantly (p&le0.05) increased and decreased respectively. But the percentage of non progressive sperm did not change. The sperm motility in busulfan treated animals with post treatment didn't change. The sperm count also increased in pretreatment animals but it was not significant (p&ge0.05).

Conclusion: The present study demonstrates that leuprolide pretreatment resulted in improvement in sperm motility in prepubertal male mice.

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Background: Hearing loss is a common sensory impairment in humans which half of its causes are genetic reasons. Genetic hearing loss can be divided into the two types of syndromic and non-syndromic, which 80% of non-syndromic cases is Autosomal Recessive Non-Syndromic Hearing Loss. The aim of the present research is to determine the contribution of DFNB2 locus (MYO7A gene) in causing an autosomal recessive hearing loss in the one group of the deaf families of Khuzestan province.

Materials and Methods: This study was conducted on 26 families with autosomal recessive hearing loss (with 4 patients) and negative for GJB2 mutations in Khuzestan province. 22 families suffered from ARNSHL and 4 families suffered from Usher syndrome. Linkage analysis was performed by using STR (Short Tandem Repeat) markers related to DFNB2 locus. Each family’s genotype was determined by PCR-PAGE method. Furthermore, haplotypes drawing and LOD score calculations were performed.

Results: From 26 families with hearing loss participating in this research, following genetic linkage analysis and haplotypes drawing, two families (7.7% of the families) showed linkage to DFNB2 locus. One family (4.5%) suffered from ARNSHL and another family suffered from Usher syndrome.

Conclusion: The results of the present research show that the contribution of DFNB2 locus in causing hearing loss in the population of Khuzestan province was similar to other studies conducted in Iran and this locus with other important loci should be considered to check in the hearing loss panel.

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Abstract

Background: Hearing loss (HL) is the most common congenital defect in humans. One or two in thousand newborn babies have prelingual hearing loss. Autosomal recessive non-syndromic hearing loss (ARNSHL) is the most common form of hereditary deafness. Hearing loss is more common in the developing countries which is due to genetic and environmental (cultural -health factors) reasons. HL has a wide range of clinical demonstrations including: congenital or late onset, conductive or sensory-neural, syndromic or non-syndromic hearing loss. The goal of this project is to determine the portion of the DFNB21 (TECTA) in ARNSHL in families with negative GJB2 gene in Khuzestan province.

Materials and Methods: We studied 21 families with ARNSHL with at least 4 patients and negative for GJB2 mutations from Khuzestan province. Genetic linkage analysis was performed using STR markers linked to DFNB21 locus.

Results: Following genetic linkage analysis and haplotyping, out of 21 families with ARNSHL, one family showed linkage to the DFNB21 (TECTA) locus.

Conclusion: The results of this project confirm other studies in Iran and give insight into the most common loci causing ARNSHL in Iran which could be helpful in research and clinic.

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Background and Purpose: Emergency medical technicians (EMTs) are the frontline medical personnel who often face stressful and critical situations. Job hardiness can enhance their capacity to withstand challenging circumstances and both physical and mental pressures. Therefore, this study was conducted to identify the level of job hardiness among EMTs and its associated factors.
Materials and Methods: This study employed a cross-sectional descriptive design involving 216 EMTs from Qom University of Medical Sciences in 2024. A stratified random sampling method was utilized. Data were collected using a demographic and occupational information checklist and a job hardiness scale. Data analysis was conducted employing ANOVA, independent t-tests, and regression analyses. A significance level of less than 0.05 was deemed statistically significant.
Findings: The average age of participants was 32.26 ± 6.34 years, with over two-thirds having bachelor's degrees and working rotating shifts. The average score for job hardiness was 44.67 ± 5.30. Results from multivariable regression indicated that educational status and a sufficient number of personnel accounted for 42% of the variance in job hardiness among EMTs.
Conclusion: Findings reveal that EMTs exhibit moderate to high job hardiness. Furthermore, adequate staffing levels and higher educational attainment positively correlated with increased job hardiness scores.