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Evaluation of immunomodulatory effects of zearalenone in mice
Islam, Mohammad Rafiqul,Kim, Jong Won,Roh, Yoon-Seok,Kim, Jong-Hoon,Han, Kang Min,Kwon, Hyung-Joo,Lim, Chae Woong,Kim, Bumseok Informa UK (TaylorFrancis) 2017 Journal of immunotoxicology Vol.14 No.1
<P>Zearalenone (ZEA) is a non-steroidal estrogenic mycotoxin produced by Fusarium species. The toxicity of ZEA has been evaluated for reproductive and developmental effects; however, there is little evidence about its acute toxicity or general immunotoxicity. In the present study, immune regulatory functions were investigated in mice that had been exposed to ZEA (5 or 20 mg/kg BW) daily for 14 days. Results showed that sub-populations of CD4(+), CD8(+) and CD11c(+) cells in the spleen and CD4(+), CD8(+) and F4/80(+) cells in the mesenteric lymph nodes (MLN) of ZEA (20mg/kg)-exposed hosts were decreased compared to those in the control mice. However, CD19(+) and CD11c(+) cells were increased in the MLN of the ZEA mice and CD4(+)CD25(+)Foxp3(+) cells were decreased in the spleen and MLN. There were differential changes in the immune cell populations of the small intestine of the ZEA mice as well, depending on small intestine location. In ex vivo experiments, ZEA treatments resulted in increased proliferative capacities of mitogen-induced splenocytes and MLN cells; such changes were paralleled by significant increases in interferon (IFN)-gamma production. With regard to serum isotypes, IgM levels were decreased and IgE levels were increased in the 20 mg/kg ZEA-treated mice. Mucosal IgA levels were decreased in the duodenum and vagina of these hosts. Serum analyzes also revealed that tumor necrosis factor (TNF)-alpha levels were decreased and interleukin (IL)-6 levels increased as a result of ZEA exposures. ZEA treatment also led to increased apoptosis in the spleen and Peyer's patches; these changes were associated with changes in the ratios of Bax:Bcl-2. Following priming with different TLR ligands, ZEA exposure led to differentially modulated TLR signaling and variable production of pro-and anti-inflammatory cytokines in RAW 264.7 macrophage cells. Taken together, these results indicated that ZEA could alter the normal expression/function of different immune system components and this would likely lead to immunomodulation in situ.</P>
Multiple congenital anomalies in a Korean native calf (Bos taurus coreanae)
Islam, Mohammad Rafiqul,Roh, Yoon-Seok,Cho, Ara,Park, Heejin,Heo, Soo Young,Lee, Kichang,Lee, Han Kyung,Lim, Chae Woong,Kim, Bumseok The Korean Society of Veterinary Science 2011 大韓獸醫學會誌 Vol.51 No.1
Supernumerary ectopic limb(s) (SEL) is a congenital anomaly defined as the presence of accessory limb(s) attached to various body regions. This paper describes a case of SEL with ectopic lung and ectopia cordis in a newborn calf, based on macroscopic, microscopic and radiographic findings. External features of multiple congenital anomalies included an ectopic lung growing over the middle of the backbone and covered with normal haired skin. Ectopia cordis was found in the abdominal cavity and attached to the liver. Two extra abnormal limbs originated separately from within the ectopic lung. Most of the abdominal organs were exposed to the outside through the opened abdominal cavity. Microscopically the ectopic lung tissue had edema in the connective tissue around the bronchus and artery. Changes in other organs included congestion of the renal medulla, infiltration of inflammatory cells (lymphocytes and eosinophils) around the hepatic portal tract, and edema surrounding blood vessels and neurons in the brain. The rudimentary humerus of the forelimb was attached to the thoracic spine, as viewed radiographically. The hindlimb was consisted of an irregularly shaped femur, short tibia and fibula, two tarsal bones, one metatarsal bone, and three phalanges. This is the first description of congenital anomalies involving the SEL, ectopic lung and ectopia cordis in a calf.
Rafiqul Islam,Shamima Choudhury,S. N. Rahman,Mohammad Jellur Rahman 한양대학교 세라믹연구소 2012 Journal of Ceramic Processing Research Vol.13 No.3
The structural and electrical properties of pure and manganese doped barium titanate (BaTiO3) with a general formula BaMnxTi1-xO3 (where x=0.00, 0.01, 0.02, 0.03, and 0.04) were investigated. For the observation of the surface morphology and estimation of grain sizes scanning electron microscopy (SEM) was employed. The grain size of BaTiO3 increased with an increase of the Mn doping. The Curie temperature (Tc) which indicates the tetragonal-to-cubic transition, of each sample was found from the resistivity versus temperature curve, and Tc of BaTiO3 increased linearly with an increase of the Mn doping. The Tc of un-doped BaTiO3 was lower than that of the doped samples. The Tc value of pure BaTiO3 was found to be 120 oC. It was found that the dielectric constant versus temperature curve also shows a similar type of Tc. The dielectric constant of BaMnxTi1-xO3 was found to decrease with an increase of Mn doping and the Tc of BaTiO3 increases with the addition of Mn. The structural and electrical properties of pure and manganese doped barium titanate (BaTiO3) with a general formula BaMnxTi1-xO3 (where x=0.00, 0.01, 0.02, 0.03, and 0.04) were investigated. For the observation of the surface morphology and estimation of grain sizes scanning electron microscopy (SEM) was employed. The grain size of BaTiO3 increased with an increase of the Mn doping. The Curie temperature (Tc) which indicates the tetragonal-to-cubic transition, of each sample was found from the resistivity versus temperature curve, and Tc of BaTiO3 increased linearly with an increase of the Mn doping. The Tc of un-doped BaTiO3 was lower than that of the doped samples. The Tc value of pure BaTiO3 was found to be 120 oC. It was found that the dielectric constant versus temperature curve also shows a similar type of Tc. The dielectric constant of BaMnxTi1-xO3 was found to decrease with an increase of Mn doping and the Tc of BaTiO3 increases with the addition of Mn.
Md Mahbubur Rahman,Mohammad Saiful Islam,Adam G.O,Md. Rafiqul Alam,유명조 한국임상수의학회 2014 한국임상수의학회지 Vol.31 No.3
Acidosis conditions either acute or chronic following ingestion of excessive amounts of readily fermentedcarbohydrate are great production problems for goat in Bangladesh. This study designed to investigate the prevalenceof lactic acidosis and then response to different therapeutic agents. For this purpose, 1,128 goat were examined atoutdoor District Veterinary Hospital, Faridpur, Bangladseh for treatment of which 40 goats were found positive forlactic acidosis showing 3.55% prevalence of disease. The highest occurrence found in female (4.64%) of over 3 yearsage (4.64%) in indigenous goat (2.7%). For therapeutic assessment the forty affected goats were divided into fourgroups A, B, C and D comprising of 10 animals each. Group A were given magnesium hydroxide 8% w/v at 1 g/kg body weight orally. In group B magnesium hydroxide 8% w/v at a dose as group A combination with 7.5% sodiumbicarbonate at the rate of 0.9 ml/Kg body weight intravenously administered. Goat in group D were treated with mixtureof ginger, nuxvomica, sodium carbonate, cobalt sulphate, dried ferrous sulphate and thiamin mononitrate at the rateof 1 g/kg body weight orally. Goat of group C treated with combination drugs of group A, B and D. The rectaltemperature, pulse rate, respiration rate, was performed before and after treatment. It was found that the highest recoveryin group C with an average period of 21 ± 1.8 hours. It was concluded that lactic acidosis is a common disease ofgoats and its severity can be effectively reduced by using combination drugs.
Pankaj Kumar Jha,Md. Golam Shahi Alam,Md. Abdullah Al Mansur,Mohammad Rafiqul Islam Talukder,Nazmun Naher,A. K. M. Anisur Rahman,David C. Hall,Farida Yeasmin Bari 한국동물생명공학회(구 한국동물번식학회) 2020 Journal of Animal Reproduction and Biotechnology Vol.35 No.2
The effects of the number of frozen-thawed ram sperm per single and double intra-cervical artificial insemination (AI) on fertility in ewes were studied. A total of 89 non-pregnant ewes were synchronized for oestrus with two doses of 100 μg PGF2α (Cloprostenol) 9 days apart. The ewes were randomly assigned to one of four groups; D200 (n = 23; double AI with 200 × 106 sperm), S200 (n = 24; single AI with 200 × 106 sperm), D100 (n = 24; double AI with 100 × 106 sperm) and S100 (n = 18; single AI with 100 × 106 sperm). Ewes were inseminated within 12 to 18 h for single AI and, within 10 to 12 h and 16 to 18 h for double AI after the onset of oestrus. The onset of oestrus ranged from 28 to 76 h (54.33 ± 1.28 h). The high percentage (29.2%) of ewes showed oestrus between 51 to 60 h. The non-return rates were highest in group D200 (56.5%) and differed significantly (p < 0.05) from group S100 (11.1%). No ewes were pregnant in group S100, and the pregnancy rates among the remaining groups did not differ. The mean gestation period was 152.8 ± 0.5 days and no difference was observed among the groups. The lambing and multiple birth rates were 100% in group D200. The single and twin lambing was highest in group D100 (33.3%) and group D200 (83.3%), respectively. Only one triplet lambing and the highest lambing size (2.2 ± 0.2) was recorded in group D200. In conclusion, double AI with 200 × 106 sperm showed comparatively most practical for achieving high pregnancy rates and lambing performances in Bangladeshi ewes under field conditions.
Shahin Sultana,Khaleda Akter,Md. Khabir Uddin Sarker,Riyadh Hossen Bhuiyan,Mohammad Majedul Haque,Md. Rafiqul Islam 한국섬유공학회 2022 Fibers and polymers Vol.23 No.10
Natural dye was extracted from Albizia procera sawdust by an aqueous extraction process. The extracted dye wasapplied to cotton fabric, and the dyeing techniques were evaluated. The metallic mordants FeSO4 and CuSO4 were used asdye fixing agents in this dyeing process. Different parameters, such as dye concentration, dyeing temperature, dyeing time,type of mordant, mordant concentration, and dyeing method, were evaluated. It was observed that the dye exhaustion oncotton fabric significantly increased with FeSO4 mordant over that with CuSO4. The shades of the dyed fabric were found tobe dark olive when the FeSO4 mordant was used and brown when the CuSO4 mordant was used. Pre-, meta-, and postmordantingdyeing methods were used to dye the fabric, but the meta-mordanting method was the most suitable for dyeingfabric with sawdust extract. Fourier transform infrared (FTIR) spectroscopy was performed on the extracted dyes and thedyed cotton fabric. The color fastness and tensile properties of all the dyed fabrics were evaluated and compared. The fabrictreated with FeSO4 as a mordant showed better color fastness and color strength (K/S) than the fabric treated with CuSO4mordant. However, the fabric treated with CuSO4 showed better tensile properties than the FeSO4 treated fabric and theundyed fabric.