Journal of Gorgan University of Medical Sciences
Year:2017 | Volume:18 | Issue:4 (60) |Papers Count:22

Color vision deficiency (CVD) is a defect of vision with disability to distinguish colors. Color vision deficiency can be divided into the two categories, congenital and acquired. Congenital color vision deficiency divided into anomalous trichromacy, dichromacy and monochromacy. The most common congenital CVD was deuteranomalous that mode of inheritance is X linked recessive occurring mostly in males. Acquired CVD can occur as a direct result of illness or any related medicine. Color perception changes in acquired CVD may be secondary to primary ocular disease, drug side effect, or serious systemic disease such as diabetes. Dystrophy of cone, types of maculopathy, crystalline lens changes associated with aging, diabetes, glaucoma, optic nerve diseases and traumatic brain injuries can cause CVD. For acquired CVD, type of defect may not be easy to classify; nevertheless, predominantly is tritanopia and type and severity of the defect fluctuates during of disease. It has been suggested that human evolution to industrialized civilization has led to an increased prevalence of CVD in most population. An acquired CVD can reflect a deficiency in color information processing at anywhere along the related visual pathway, from the photoreceptors to the cortex. Sometimes, assessment of color vision can be helpful to detect a visual impairment in early stages.

Background and Objective: Ducrosia anethifolia (Dc.) is a medicinal odor plant contains CNS effective compounds which has been used in Iranian traditional medicine. This study was done to determine the effect of Ducrosia anethifolia (Dc.) Boiss essential oil on spatial learning and memory in adult male rats.Methods: In this experimental study, 35 wistar adult male rats were randomly allocated into the five groups (n=7) including: control, sham (injected vehicle) and Ducrosia anethifolia (Dc.) Boiss essential oil groups 0.125, 0.25 and 0.5ml/kg/bw, intraperitonally during four days. Morris water maze test was used to assess learning and memory.Results: Ducrosia anethifolia (Dc.) Boiss essential oil (0.5 ml/kg/bw) was significantly increased escape latency in the second and third (P<0.05) as well as forth (P<0.05) days of acquisition test in compare to control group. In addition latency to find the hidden platform was significantly decreased with 0.25 essential oil in all days except first day (P<0.05) and in essential oil- treated rats at 0.125 ml/kg/bw in the second and third days (P<0.05) in compare to the control group. Time spent and distance travelled in target zone were significantly increased in Ducrosia anethifolia (Dc.) Boiss essential oil -treated rats (0.5ml/kg/bw) in compare to control group (P<0.05).Conclusion: Intraperental administration of the Ducrosia anethifolia (Dc.) Boiss essential oil at doses of 0.5 and 0.25 ml/kg/bw during four days can improves spatial learning and memory in adult male rats.

Background and Objective: Hydroalcholic extract of Peppermint is traditionally used for gastrointestinal disorders. This study was done to evaluate the effect of Peppermint extract on the mice colon motor activity following immobilization stress.Methods: In this experimental study, 30 male Albino mice were randomly allocated into the three groups; including control, stress and stress+Peppermint oil groups (n=10). The second group as a stress group exposed to immobilization stress for four hours during three days. Third group as stress plus Peppermintoil group was exposed to stress in addition to administration of 27 mg/kg/bw Peppermint oil intraperitoneally prior to stress. After three days, intestinal and peristaltic activity was recorded using pressure transducer from in vitro segments of colon (4-5 cm in length. Also, fecal weight, food intake and body weight was measured for each mouse for in vivo condition.Results: The mean±SD of fecal weight after three times stress immobilization was 1.36±0.71, 1.06±0.6 and 0.47±0.39 gr in control, stress and Stress+Peppermint oil groups, respectively (P<0.05). The mean±SD of internal luminal pressure after three times stress immobilization was 4.47±1.15, 3.48±1.25 and 0.77±0.37 mm/hg in control, Stress and stress+Peppermint oil groups, respectively (P<0.05).Conclusion: Peppermint oil is a strong inhibitor for colon motor activity following immobilization stress.

Background and Objective: Gentamicin can cause cell destruction by generating active oxygen species leading to hepatotoxicity. This study was done to determine the effect of Dianthus carryophyllu extract on the Gentamicin induced hepatotoxicity in Wistar rats.Methods: In this experimental study, 49 mature wistar rats, were randomly allocated into 7 groups including, control; Sham (saline interaperitonely); experimental group 1 was treated with 100 mg/kg/bw clove essence; experimental group 2 were received 100 mg/kg/bw of Gentamicin; and experimental groups 3, 4 and 5 were received 100 mg/kg/bw of Gentamicin along with 25, 50 and 100 mg/kg/bw of hydro alcoholic extract of Dianthus carryophyllu (clove), respectively for 28 days. Blood samples were taken and serum activities of Alanine Aminotransferase (ALT), Aspartate aminotransferase (AST), alkaline phosphatase (ALP) and serum concentration of total protein and albumin were measured.Results: The serum level of aspartate transaminase and Alanine transaminase significantly increased in experimental group 2 in compared to the sham and control groups (P<0.05). Alkaline Phosphatase concentration significantly reduced in experimental groups 2 and 3 in comparision with sham and control groups (P<0.05). Albumin and total protein concentration significantly reduced in experimental groups 2 and 3 in compare to the sham and control groups (P<0.05). In histological examination, cell necrosis, fat accumdation and mononocular cell accumulation reduced in experimental groups 5 in compare to Gentamicin treated group.Conclusion: Dianthus carryophyllu hydro alcoholic extract is able to protect against enzyme alterations and hepatotoxicity induced by Gentamicin.

Background and Objective: Hyperlipidemia can be considered as one of the main risk factor, involved in cardiovascular disease and it is a major cause of death. This study was done to determine the effect of air part of Echinophora platyloba extract on Pituitary - thyroid axis hormones and lipid profile in hypercholesterolemic rats.Methods: In this experimental study, 40 male Wistar rats were randomly allocated into 5 groups (n=8) including control group with normal diet, hypercholesterolemic group along with high cholesterol diet, and the three treatment groups with hypercholesterolemia which animals were received daily doses of 100, 200 and 300 mg/kg/bw of the hydroalcoholic extract of Echinophora platyloba, respectively by gavage during 42 days. At the end of this period, blood sample was obtained. Lipid profile, including total cholesterol, triglycerides (TG), low-density lipoprotein (LDL), very low-density lipoprotein (VLDL), high density lipoprotein (HDL), triiodothyronine (T3), thyroxine (T4) and thyroid hormone stimulation (TSH) were measeared using Radioimnoassay method.Results: The level of LDL and cholesterol and TG, significantly reduced in treated group receiving the lowest dose of the extract (100 mg/kg/bw) in compare to hypercholesterolemic group (P<0.05). The level of HDL, TSH and T4 significantly increased in the treated group receiving the highest doses of the extract (300 mg/kg/bw) in compare to hypercholesterolemic group (P<0.05).Conclusion: Echinophora platyloba extract dose dependly can alter Pituitary- thyroid axis hormones and lipid profile in hypercholesterolemic rats.

Background and Objective: The degeneration of motor neuron in anterior horn of spinal cord can be caused by compression. Hyssopus officinalis of Laminacea family demonstrate antioxidant and antiinflammation effects. This study was done to evaluate the effect of alcoholic extract of Hyssopus officinalisleaves, on motor neuron in spinal cord after sciatic nerve compression in male rats.Methods: In this experimental research, 60 male wistar rats were randomly allocated into six groups including; control, compression, and compression+treatment (25, 50, 75, 100 mg/kg/bw). In order to induce compression, sciatic nerve of right leg was exposed to compression for 60 second using locker pincers. Extract injected intraperitoneally in the first and second week after compression.28 days after compression under profusion method, the lumber spinal cord was sampled. The density of motor neurons (9-20 micron) was measured using dissector and stereological method.Results: Density of neurons in compression group (611±34) significantly reduced compared to the control group (1658±30) (P<0.05). Moreover, neuronal density was significantly increased in 25 (1179±22), 50 (1260±20), 75 (1350±15) and 100 (1120±10) mg/kg/bw doses in treatment groups in compared to the compression group (P<0.05).Conclusion: Alcoholic extract of Hyssopus officinalis leaves exhibite neuroprotective effect on neurons in anterior horn of the spinal cord after injury. This effect probably is related to the antioxidant and anti inflammation properties in alcoholic extract of Hyssopus officinalis, dose dependly.

Background and Objective: Homocysteine and atherogenic index are significant and independent risk factors for cardiovascular diseases. This study was done to determine the effect of 10 weeks endurance swimming training on serum homocysteine level and atherogenic index in rats.Methods: In this experimental study, 20 adult male Wistar rats (180±20 g) were randomly allocated into control (n=10) and experimental (n=10) groups. Animals in experimental group swam ten weeks of endurance training (5 days a week, for 60 minutes a day) with a 5% body weight load attached to the tail. At the end of 10 weeks and after the last of training session and 12 hours of fasting animals were sacrificed. Blood samples were taken and serum homocysteine level, atherogenic index and NON-HDL-cholesterol were measured.Results: Serum homocysteine level, atherogenic index and NON-HDL-cholesterol of animals significantly reduced in the experimental group compared to the controls (P<0.05).Conclusion: Ten weeks of endurance swimming training with low to moderate intensity improves homocysteine level and atherogenic index in animal model.

Background and Objective: Neurotrophic factors increase neuron survival and growth. In addition their expression is altered in response to nerve injury. This study was done to evaluate the neuroprotective effect of n-butanol, ethylacetate, aqueous and hydro-alcoholic fractions of Anthemis nobilis extracts through nerve growth factor (NGF) gene expression after sciatic nerve injury in rats.Methods: In this experimental study, 36 male Wistar rats were randomly allocated into 6 groups including control group, compression, compression+hydro-alcoholic extract, compression+n-butanol, compression+ethyl acetate fraction and compression+aqueous fraction with dose of 75 mg/kg/bw, respectively. Hydro-alcoholic, aqueous, n-butanol and ethyl acetate extract of Anthemis nobilis from aerial parts was prepared by soxhlet method. In control group, after anesthetizing the animals, the muscle was cut at the site of sciatic nerve without damaging and in compression and treatment group, the right sciatic nerve was compressed for 60 sec. The extract first time was injected intraperitoneally after nerve compression and the second was performed 7 days later. After 28 days, samples were prepared from the lumbar portion of spinal cord and cDNA was synthesized and total RNA was extracted. The changes in NGF gene expression evaluated usingDct and Real Time PCR methods.Results: NGF gene expression significantly reduced in the compression group in compare to control (P<0.05). The expression of NGF significantly increased in treated groups including hydro-alcoholic extract, n-butanol, ethyl acetate and aqueous fractions in compare to compression group (P<0.05). The expression of NGF was more in hydro-alcoholic extract treated group in comparision with other factions treated groups.Conclusion: Neuroprotective effect of of the aerial parts of Anthemis nobilis may be due to increase of NGF gene expression.

Background and Objective: Use of cell-phone cause adverse effect of radiations in many people. This study was conducted to investigate the effect of cell-phone radiation during pregnancy on serum level of the testosterone, FSH, LH and sex cell lines in 60-day old offspring male rats.Methods: In this experimental study, 24 rat's dams were randomly allocated into control, sham and interventional groups. Animals in control group have not been affected with the radiation and the interventional groups were exposed to cell-phone radiation from the beginning of pregnancy as much as 4 hours daily for 14 days. The sham group over the same period was exposed around cell-phone turning on without conversation. After childbirth and maturity 10 male offspring of different groups separated and after phlebotomizing, testosterone, FSH, LH was measured for each offspring. After anestasia, testis was removed, weighted, measured and throught histological method leydig, sertoli, spermatogonia and spermatid cells were counted for each offspring.Results: weight and size of the testis, the volume of seminiferous tubules, the volume of interstitial tissues of seminiferous tubules, and spermatocytes, spermatid, sertoli and spermatogonia cells numbers were significantly reduced in interventional group in compare to control and sham groups (P<0.05) but reduction of leydig cells, FSH, testosterone and increasing level of LH in interventional group did not change significantly in comparision with control and sham groups.Conclusion: Cell-phone radiations during pregnancy caused significantly reducing in sex cell lines but do not cause significant effect on FSH, LH and testosterone level in mature male offspring.

Background and Objective: Soybean as a cheap protein and without side effects has been introduced to food industry. This study carried out to determine the effect of diet containing soybean on histology and histomorphometry of duodenal villi and serum levels of Calcium, Phosphorus and Glucose in mice.Methods: In this experimental study, 30 female immature BALB/c mice with 3 weeks of age were randomly allocated into control, and experimental 1 and 2. The control group was fed a diet with complete protein. Animals in the experimental 1 and 2 were received a diet of complete protein with 40% soybean and 20% soybean, respectively. After 3 months the mice were anesthetized and blood samples were taken from the heart for determining serum level of Calcium, Phosphorus and glucose. Duodenum specimens from were prepared and stained with hematoxylin and eosin.Results: Tissue structure of duodenum in experimental groups in compare to control group was not significantly changed, except for some scant specimens who showed some degrees of destruction in villi apicese. In histomorphometrical evaluation, the thickness of sub - mucosa and musculature were significantly increased in experimental groups compared to the controls group (P<0.05). The height of villi, depth of crypts and serum Glucose level were significantly reduced in experimental groups compared to the controls group (P<0.05), whereas the level of Calcium was significantly increased in experimental with the control group (P<0.05), but the level of Phosphorus did not show any significant changes in experimental groups compared to the controls.Conclusion: Long term consumption of soybean can induce significant alteration in serum Calcium and glucose level, thickness of sub mucosa and musculature, the height of villi and depth of crypt in duodenum.

Background and Objective: Breast cancer is a cancer in women with high prevalancy worldwide. Vascular endothelial growth factor (VEGF) is one of the most important Pro-angiogenic factors. +405C/G is one of the common VEGF polymorphism which may have an impact on the level of gene expression and over loading of gene products. This study was done to evaluate the association between VEGF +405C/G gene polymorphism and breast cancer risk in north of Iran.Methods: This case-control study was carried out on 50 patients with breast cancer and 50 normal aged-matched controls in north of Iran. Genomic DNA was extracted from peripheral blood cells. To determine the genotype of+405 C/G VEGF gene polymorphism, PCR-RFLP method was used.Results: The prevalence of genotypic frequencies of GG, GC and CC in controls were 42%, 48% and 10%, respectively and in patients were 22%, 46% and 32%, respectively (P<0.05). The+405C allele was considered as a risk factor in breast cancer (P<0.05).Conclusion: It seems+405 C/G VEGF gene polymorphism may be associated with the breast cancer in northern Iran.

Background and Objective: Bioabsorbat is one of the most effective methods for the removal of heavy metals from industrial sewages. This study was done to assess the evaluation of Copper removal from industrial sewages by the Green microalgae Chlorella vulgaris.Methods: This descriptive-analytic study was done on three samples from Bahonar Kerman copper industry sewage samples and 63 copper biosorption synthetic samples by Green microalgae Chlorella vulgaris at a constant temperature of 25oC, optimum pH 6 and contact time of 60 minutes and adsorbent concentration of 2 g/L. The rate of residual copper was determined using atomic absorption instrument.The adsorption isotherms and metal ions kinetic modeling on to the adsorbent were determined based on Langmuir isotherm, Freundlich and kinetics of type I and II.Results: The removal efficiency was determined as 82.62% and 91.5 % in Copper real examples and synthetic samples, respectively. Based on the obtained results, copper absorption followed Langmuir model and second order kinetic equation (P<0.05).Conclusion: Due to high absorption potential of Green microalgae Chlorella vulgaris, this method can be effectively used for copper removal from industrial sewages.

Background and Objective: Several methods are available for measuring fever in children. This study was done to compare the accuracy of three method of measuring body temperature using left and right tympanic, axillary and rectal methods in three months to five years old children.Methods: This descriptive-analytic study was done on 126 children (63 without fever and 63 children with fever) with 3 months to 5 years age in Mofid hospital, Tehran, Iran. Rectal temperature lower than 38oC was considered as Gold standard to determine fever. Body temperature was also recorded for subjects through right and left tympanic and axilary methods.Results: Body temperature was recorded in axillary method 37.1°C (sensitivity: 92.1%, specificity: 90.5%), right tympanic 36.9oC (sensitivity: 74.6%, specificity: 84.13%) and left tympanic 37.3oC (sensitivity: 93.65%, specificity: 84.13%). The mean temperature in the axillary method 0.77oC, right tympanic 1.02oC and left tympanic 0.48oC was lower than the mean rectal method (P<0.05). The correlation between right, left tympanic and axillary with rectal method was 0.84, 0.894 and 0.925, respectively (P<0.05). The area under the receiver operating characteristic (ROC) curve for left and right tympanic and axillary were 0.95, 0.87, 0.965, respectively.Conclusion: The difference between rectal and left tympanic method was at the lowest level due to the ease of measuring temperature through tympanic membrane in three months to five years old children.

Background and Objective: Individuals habit has been changed due to technology improvement as a result fast food consumption has dramatically increased in Iran. This study was done to determine the effective factors on Fast food consumption among high-school students based on planned behavior theory.Methods: This descriptive-analytic, cross-sectional study was conducted on 500 high-school students in Aliabad city in Golestan province in north of Iran in one year study from October 2014-2015. A valid and reliable researcher-made and self-administered questionnaire based on TPB constructs (including attitude, subjective norms, perceived behavioral control and behavior intention) was utilized to collect the data.Results: The frequency of fast food consumption was 4.01 per month and hamburger and pizza were the most prevalent fast foods. TPB explained fast food consumption behaviors with relatively high R2 around 0.65, effectively. Frequency of fast food consumption was significantly associated with behavioral intention and subjective norms (P<0.05).Conclusion: As friends are the effective subjective norm for student fast food consumption therefore, they must specifically be considered in developing beneficial educational interventions.

Background and Objective: Water resident bacteria are potentially important reservoir of antibiotic resistance genes. This study was performed to evaluate the antibiotic resistance in Escherichia coli strains isolated from raw waters of Golestan province, northern Iran.Methods: In this descriptive study, 26 samples from Ziarat river water (13 samples pre & 13 samples post treatment) and 36 samples from Azadshahr area springs water (18 samples pre & 18 samples post treatment) were collected.75 numbers of Escherichia coli bacterium samples (50 isolated from river and 25 isolated from springs) identified and isolated from raw waters of Golestan province, northern Iran by MPN method via differential tests. Susceptibility of Escherichia coli strains to 11 antibiotics (Amoxicillin / Clavulanic acid, Ampicillin, Imipenem, Cefalotin, Cefotaxime, Gentamicin, Amikacin, Tetracycline, Nalidixic acid, Ciprofloxacin and Trimethoprim / Sulfamethoxazole) was assayed by disk diffusion Kirby& Bauer’s method.Results: 14 spring's raw water samples and 12 river raw water samples contained Escherichia coli. All of the river and springs samples assayed free from Escherichia coli post treatment. All of the Escherichia colistrains isolated from samples showed the similar phenotypical resistance against to surveyed 11 antibiotics. The most significance resistance to Ampicillin (river 94% & springs 88%), Amoxicillin / Clavulanic acid (river 76% & springs 80%), Tetracycline (river 14% & springs 16%) and Cefalotin (river 8% & springs 16%) viewed. Resistance to Trimethoprim / Sulfamethoxazole (8%), Nalidixic acid (2%) and Ciprofloxacin (2%) just viewed in river samples. All of the river and spring isolates were sensitive to Imipenem, Cefotaxime, Gentamicin and Amikacin and demonstrated intermediate resistance to others antibiotics.Conclusion: Treatment of raw water from springs and rivers caused the eradication of Escherichia coli.As regard to observed phenotypical resistance insprings’ raw waters, presumably with lack of treatment springs’raw water can be caused the transmission of antibiotic resistance to human body.

Background and Objective: Extended-Spectrum Beta Lactamase enzymes (ESBLs) are the most important factor for antimicrobial resistance in Enterobacteriaceae The resistance to beta-lactam antibiotics is the main problem in the bacterial infections therapy. This study was done to determine the prevalence of Extended-Spectrum Beta Lactamase enzymes in clinical isolates of Enterobacteriaceae family.Methods: In this descriptive study, 240 isolates of Enterobacteriaceae family were collected from clinical specimens obtained in Shohada, Rahimi and Madani hospitals in Khorramabad city, Iran. Antibiotic susceptibility of isolates was performed by disk diffusion method. ESBLs production in all isolates was determined using the combination disk method.Results: Bacteria strains isolated in this study were Escherichia coli (76%), Klebsiella pneumonia (16.2%), Citrobacter (5.4%), Enterobacter spp. (0.83%) and Proteus (1.6%). The results of antimicrobial susceptibility of isolates showed that the highest rate of antibiotic resistance was toward Ampicillin (88%) and Cefotaxime (43%) and the lowest rate was observed to Amikacin (2.5%). According to the results of the phenotypic tests, 141 (59%) isolates out of 240 Enterobacteriaceae were beta-lactamase producers.Conclusion: ESBL producer isolates and antibiotic resistant due to of Enterobacteriaceae isolated from clinical samples from hospitals are high prevalence in Khorramabad city, Iran.

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.

Background and Objective: Beta-lactamase enzymes are the most important resistance factors among Gram-negative bacteria to the beta-lactam group of antibiotics. This study was conducted to determine the prevalence of extended-spectrum beta-lactamases (ESBL) in Escherichia coli isolates using PCR method.Methods: This descriptive – analytic study was conducted on 120 Escherichia coli samples isolated in hospitals in Sari in northern Iran during 2013. Antibiogram was conducted using combined disk method to determine the sample resistance. The presence of b- lactamase gene of CTX-M-15 in ESBL was assessed using PCR method.Results: Out of 120 Escherichia coli, 98 (81.6%), 15 (12.5%) and 7 (5.8%) bacteria isolated from urinary tract, blood and wound, respectively. Multiple drug resistance were seen in 98% of urine samples, 12.7% of blood samples and 3.6% of wound samples (P<0.05).18.3% of multiple drug resistance samples were positive for CTX-M-15 b-lactamases resistance gene. The probable presence of CTX-M-15 were detected in blood sample (20%), urine sample and wounds (14.3%) (P<0.05).Conclusion: Beta-lactamase enzymes were detected in high percent of Escherichia coli isolated from urine samples.