Barzan Kamangar - Academia.edu (original) (raw)

Papers by Barzan Kamangar

FIGURE 5. Oxynoemacheilus chomanicus sp. n.: a) holotype, SL 54.9 mm; b) juvenile, SL 29.4 mm; c)... more FIGURE 5. Oxynoemacheilus chomanicus sp. n.: a) holotype, SL 54.9 mm; b) juvenile, SL 29.4 mm; c) mouth structure; d) scale; e) gastrointestinal duct; f) bony air-bladder capsule, ventral view.

Endocrinology, May 1, 2006

In the present study we report the full coding sequence of rainbow trout IGF-binding protein-1 (I... more In the present study we report the full coding sequence of rainbow trout IGF-binding protein-1 (IGFBP1),-2,-3,-5, and-6 and IGFBP-related protein-1 (IGFBP-rP1) mRNAs as well as the partial coding sequence of IGFBP-4 mRNA. To our knowledge, this is the first report of IGFBP4, IGFBP6, and IGFBP-rP1 in a nonmammalian species. The tissue distribution of all mRNAs was studied, and the ovarian expression profiles of IGFBP2 to-6 and IGFBP-rP1 between late vitellogenesis and oocyte maturation were characterized. In addition, in vitro hormonal regulation by the maturation-inducing steroid 17,20␤-dihydroxy-4-pregnen-3-one (17,20␤P), gonadotropin, and estradiol were studied. We observed that besides IGFBP1, which was only found in liver, IGFBP2 to-6 and IGFPB-rP1 were expressed in the preovulatory ovary. IGFBP3 was also detected in liver, trunk, kidney, skin, and gills, whereas IGFBP2 to-6 and IGFBP-rP1 exhibited a wider tissue distribution. In the preovulatory ovary, IGFBP3 was strongly downregulated during the postvitellogenesis period, whereas IGFBP5 exhibited a limited up-regulation. In addition, IGFBP6 and IGFBP-rP1 were up-regulated during oocyte maturation. Hormonal regulation data indicated that all ovarian IGFBPs and IGFBP-rP1 transcripts are regulated under gonadotropic stimulation at a concentration that induced 100% oocyte maturation. In addition, IGFBP2 to-5 transcripts are regulated by 17,20␤P and estradiol. Together, our observations strongly suggest that during final oocyte maturation, a down-regulation of IGFBP3,-4, and-5 occurs in the oocyte in response to gonadotropic and 17,20␤P (IGFBP3 and-5) stimulation, whereas an up-regulation of IGFBP2 and-6 occurs in follicular layers or extrafollicular tissue in response to gonadotropic stimulation.

Zootaxa, Mar 14, 2023

Glyptothorax sardashtensis, new species, from the upper Lesser Zab in Iran, is distinguished from... more Glyptothorax sardashtensis, new species, from the upper Lesser Zab in Iran, is distinguished from its congeners in the Persian Gulf basin by: a plain flank without black or brown blotches; a wide and round anterior margin of the medial pit in the thoracic adhesive apparatus; few, short median striae in the thoracic adhesive apparatus; three yellowish blotches arranged in a crescent-shaped arch on the nuchal plate in front of the dorsal-fin origin; no tubercles on the head and flank; and a short adipose fin. The new species is also distinguished by a minimum K2P sequence divergence of 2.16% in the mtDNA-COI barcode region from G. daemon and G. galaxias, its closest relatives. Glyptothorax kurdistanicus is re-discovered close to its type locality.

Cell, 2010

Insulin-like growth factor plays a paracrine/autocrine role in regulating testicular function in ... more Insulin-like growth factor plays a paracrine/autocrine role in regulating testicular function in the stallion, but its presence in the equine epididymis remains unknown. The aim of this study was to test the hypothesis that insulin-like growth factor-I (IGF-I) and IGF-I receptor (IGF-IR) are localized in the caput, corpus, and cauda of the epididymis in an age-dependent manner. Immediately after castration, epididymal tissue was fixed, paraffin-embedded, and processed for immunohistochemistry (IHC). Western blot was also performed using equine epididymal extracts to verify the specificity of the antibodies against IGF-I and IGF-IR. Immunolabeling of IGF-I was observed in the cytoplasm of principal and basal cells in the caput, corpus, and cauda at the pre-pubertal (3-7 months), pubertal (12-18 months), post-pubertal (2-4 years), and adult stages (4.5-8 years). Immunolabeling of IGF-IR was observed in the cytoplasm of principal cells in all regions of the epididymis in each age group. Immunolabeling of IGF-IR was also detected in the cytoplasm of basal cells from animals of all ages. Bands observed by Western blot corresponded to the molecular weights of IGF-I and IGF-IR, ~23 kDa and 95 kDa, respectively. These results suggest that IGF-I might function as an autocrine and/or paracrine factor during the development, maintenance and/or secretions of the stallion epididymis.

Irrigation Science, Sep 7, 2020

One of the most fertilizing effluents for irrigation are those from fish farms. In drip irrigatio... more One of the most fertilizing effluents for irrigation are those from fish farms. In drip irrigation systems, emitter clogging is the biggest problem of the effluent application. Therefore, the aim of this paper was to assess the clogging rate of a drip irrigation system using the effluent of a rainbow trout farm. A control treatment with the input fish farm freshwater and two more using fish farm effluent, with and without irrigation lateral drainage, were tested. Pressure compensating emitters Microflapper with nominal discharges of 4 and 8 L/h (M4, M8) and Netafim with discharges of 4, 8, and 12 L/h (N4, N8, and N12) were used. For each treatment, 42 irrigations events were carried out with a total of 336 h over a 4-month period. Each irrigation event lasted 8 h every 3 days. Clogging rate, Christiansen uniformity (CU) and emission uniformity (EU) coefficients were utilized for assessing the hydraulic performance of emitters. There was no emitter completely clogged during the experiment. However, as the clogging rate gradually increased, lateral discharges during the irrigation season decreased to a maximum of 57% of the initial value in some laterals. Evolution of the clogging rate was unstable, especially in the control treatment. N4 emitter show the best performance regardless of the quality of irrigation water. The clogging rates of M4 and N8 emitters were significantly (p < 0.05) higher when effluent was used. The N12 and M8 emitters had the highest sensitivity to clogging, without differences between treatments. Results show the dependence of clogging rate on emitter type and its discharge. The CU as well as EU for all emitters and treatments were higher than the allowable minimum. Lateral drainage had the greatest impact on the N12 and M8 emitters, which had the highest discharge. Moreover, some relationships between CU and clogging rate were obtained. It is generally possible to use the rainbow trout effluent in a drip irrigation system with pressure compensating emitters.

Journal of Aquaculture Research and Development, 2011

Two levels of clove oil concentrations (0, 75, and 150 ppm) were prepared in 3 separate aquariums... more Two levels of clove oil concentrations (0, 75, and 150 ppm) were prepared in 3 separate aquariums, each include 15 fish goldfish, Carassius auratus (average weight of 65 ± 5 g). Fish were exposed to different concentrations of clove oil and kept in aquariums at 18° C until they reach to stage 4 of anesthesia. Blood samples were taken from caudal vein at 0, 4, and 24 hours after anesthesia. Red blood cell count (RBC), hemoglobin concentration (Hb), hematocrit (PCV), white blood cell count (WBC) and the differential leukocyte count (leukogram) were determined by standard hematology method. Results showed that there were no significant differences between values of Hb, PCV and leukogram in each treatment in compare to the same control group (P> 0.05); however, WBC was significantly lower at 4 hours for 150 ppm clove oil treatment group and then returned to normal level 24 hours post anesthesia (P< 0.05). Moreover, RBC in this group was increased significantly after 24 h post anesthesia (P< 0.05). The induction time was less for 150 than 75 ppm clove oil treatment group (90 and 180 seconds respectively). Our results verified that using clove oil up to 75 ppm dose not have irreversible hematological side effect to the goldfish.

HAL (Le Centre pour la Communication Scientifique Directe), Mar 28, 2006

HAL (Le Centre pour la Communication Scientifique Directe), Jan 28, 2011

Journal of Applied Ichthyological Research, Jan 10, 2020

Irrigation Science, Nov 18, 2019

The main aim of this study was to investigate the qualitative changes of the rainbow trout efflue... more The main aim of this study was to investigate the qualitative changes of the rainbow trout effluent as water supply in a drip irrigation system. Two drip irrigation systems with a hydro-cyclone filter, sand filter and screen filter for using freshwater (control treatment) and fish farm effluent were tested in Kurdistan province (northwest of Iran) in 2017. In addition, the effect of lateral drainage at the end of each irrigation event was also studied. Two emitter types with different discharge flows were used for each treatment. In the 16 irrigation events carried out, samples were collected from the different water sources (dam, well, and river), filter outlets and lateral locations for measuring total suspended solids (TSS), particle size, pH, electrical conductivity, different compounds (Fe, Na, K, Ca, Mg, NO 3 , PO 4 , HCO 3) and the number of coliform bacteria. The results showed changes in the TSS and the number of coliform bacteria, but the remaining parameters had slight changes. In both control and effluent treatments, the filtration system significantly reduced TSS, having the screen filters the greatest effect on this decrease and hydro-cyclone and sand filter the least. To achieve higher removals, it is recommended to use finer grains in sand filters. The filtration of both control and effluent treatments increased the number of bacteria. The highest number of bacteria in the control treatment was measured after the sand filter and in the effluent treatments after the screen filter.

Fish Physiology and Biochemistry, Apr 11, 2007

... Barzan Bahrami Kamangar Æ Mohammad Javad Rasaee Æ Bagher Mojazi Amiri Æ Behrouz Abtahi Æ Mahm... more ... Barzan Bahrami Kamangar Æ Mohammad Javad Rasaee Æ Bagher Mojazi Amiri Æ Behrouz Abtahi Æ Mahmoud Bahmani Received: 6 September 2005 / Accepted: 14 February 2007 / Published online: 11 April 2007 © Springer Science+Business Media BV 2007 ...

Journal of Aquaculture Development, Jul 15, 2017

Journal of Asia-Pacific Biodiversity, Jun 1, 2018

Salamandra infraimmaculata is a member of family Salamandridae that is distributed in Western Asi... more Salamandra infraimmaculata is a member of family Salamandridae that is distributed in Western Asia from Iran through Turkey to Lebanon. In this study, we surveyed habitat suitability predictions for the species in Kurdistan province, Western Iran. Distribution prediction showed excellent performance (area under the curve ¼ 0.962), with temperature seasonality (47.8%) and precipitation of coldest quarter (38.4%) being two main bioclimatic variables predicting species presence. Temperature and precipitation are two dependent variables on which vegetation and habitat type depend. Slopes of the western Zagros Mountains have moist and temperate oak forests that contain many springs. The presence of both oak forests and water resources may allow the establishment of populations of fire salamanders in the region. As the forests are decreasing because of human activities, the amount of suitable habitats for this species is also decreasing. It is necessary to develop and implement conservation programs to protect the oak forests on the western slopes of the Zagros.

Journal of Aquatic Ecology, May 10, 2016