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Articles by A. Bahonar
Total Records ( 3 ) for A. Bahonar
  A. Sattari , S.S. Mirzargar , A. Abrishamifar , R. Lourakzadegan , A. Bahonar , H.E. Mousavi and A. Niasari
  This study investigates Alternating Current (AC) electroanesthesia of rainbow trout (Oncorhynchus mykiss) in comparison with MS222 and clove oil, using plasma cortisol and glucose concentrations as stress assessment indicators. A microcontroller-based apparatus was designed and constructed to allow a programmable voltage-time Pulse-Width Modulated (PWM) electrical wave application through 19x20 cm submersible electrodes for 91sec in a 33 cm long tank to induce loss of equilibrium and immobility with recovery after 52±27 sec. Recovery after 660±102 sec was observed in MS222-anesthetized fish (after induction for 720±72 sec) and a recovery time of 546±102 sec was observed in clove oil-anesthetized fish (after induction for 144±42 sec) both are significantly longer recovery times in comparison with electroanesthesia (p<0.001). Using direct enzyme-linked immunosorbant assay (ELISA) for cortisol and enzymatic colorimetric assay for glucose assessments at 0, 1, 6, 12 h after each anesthesia, the anesthetics indicated similar trend of cortisol responses during 12 h of investigation. The dilatory trend of glucose changes and response derived from anesthetics and electricity and its surge at 6 h after anesthesia (p<0.05) confirmed glucose as a second order indicator of stress responses. Electroanesthesia is a fast, economic, eco-friendly and safe anesthetic method provides desirable trout immobility for aquaculture activities.
  A. Rezaie , A. Tavasoli , A. Bahonar and M. Mehrazma
  Objectives of this study were to describe classification and grading in canine mammary carcinoma. The histological diagnosis was made on the basis of the current WHO classification for canine mammary tumors and then tumors were graded histologically in accordance with the Elston and Ellis method for human breast tumors and based on the assessment of three morphological features: tubule formation, nuclear pleomorphism and mitotic counts. The mammary carcinomas of 33 cases were classified to 17 (51.5%) simple carcinoma, 12 (36.4%) complex carcinoma and 4 (12.1%) carcinoma arising in benign tumor. The histological grade of these cases were as follows: grade I, 11 (33.3%); grade II, 7 (21.2%); Grade III, 15 (45.5%). Present results illustrated good relationship between tumors grading and histological type also revealed that most grade II and III of these tumors were classified as simple one. Despite of many methods for grading such as Gilbertson and Misdorp method used in this research was less complicated and more comparable with human medicine. So, this routine use of this method would help the pathologist and clinician for more accurate prognosis and treatment in canine mammary carcinoma and facilitate comparative studies of canine and human researches.
  S.M. Mousavi , S.S. Mirzargar , H. Ebrahim Zadeh Mousavi , R. Omid Baigi , A. Khosravi , A. Bahonar and M.R. Ahmadi
  The aim of this study was introducing a new herbal constitution for malachite green in hatcheries. In this study, antifungal activities of a new Combination of Essential Oils (CEO) from the herbs; Thymus vulgaris, Salvia officinalis, Eucalyptus globulus and Mentha piperita in Oncorhynchus mykiss eggs and its effects on hatching rate in comparison with malachite green (a specific treatment for the control of saprolegniasis) were studied. After fertilization, eggs were transferred to incubators and then treated with five concentration of the combined essential oils with concentrations: 10, 50, 100, 150 and 200 ppm, respectively and malachite green (1 ppm) using constant flow treatment method for incubation period. One incubator was as control without any treatment The water quality factors were controlled over the study period. In the end of hatching rate, the mold infection and hatching rate were calculated. The hatching percentage in five treatment groups of CEO were 69.99% at 10 ppm, 63.61% at 50 ppm, 62.1% at 100 ppm, 60.53% at 150 ppm, 54.63% at 200 ppm, 60%. 83 at 1 ppm of malachite green group and 53.48% in control group, respectively. The results revealed significant antifungal effects of the combined essential oils in comparison with malachite green on fish eggs so that it could decrease mold infection and increase hatching rate on concentration 10 ppm (p < 0.05). This indicated that this combination of essential oils may be a promising antifungal agent in aquaculture.
 
 
 
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