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Articles by M.H. Sulaiman
Total Records ( 6 ) for M.H. Sulaiman
  B.I. Onyeanusi , M.H. Sulaiman , S.O. Salami , S.M. Maidawa , A.D. Umosen , O. Byanet , J.O. Nzalak , M.N. Ali and J. Imam
  From day one to day nine of embryonic development, no ossification centre was observed in the embryo. Small centres of ossification were seen on the 10th day at some locations like the cervical vertebrae, thoracic vertebrae, clavicle, coracoid, scapula, humerus, radius and ulna. Other areas with centres of ossification on this day included the ilium, pubis, femur and fibular. By day 12, these centres of ossification were very prominent at the points seen on day 10 and in addition, the Ischium had ossification centre. By day 13, ossification centres showed up in lumbosacral vertebrae, radius ulna, ulnacarpal and carpometacarpal joints, metatarsus, tibiotarsus, patella, first phalanx of digit ii and second phalanx of digit iii. Between days 15 and 16, additional ossification centres were observed at coccygeal vertebrae, digits ii, iii and iv of pectoral limb. By day 21, ossification centre appeared on the pygostyle and by days 23 and 24, the right and left clavicles had joined together although not properly fused.
  M.H. Sulaiman , D.M. Aduta and S.O. Salami
  Twelve blood samples were obtained from four male and eight female adult Muscovy ducks which were raised semi-intensively. The total and differential blood counts as well as study of the blood cellular characteristics were carried out in this study. We report herein that the male Muscovy ducks had a higher average erythrocyte count (2.5 x 106/mm3) than the female Muscovy ducks (2.20 x 106/mm3). The Muscovy ducks average erythrocyte counts were lower than the average counts reported for temperate breed of ducks but higher than those reported for Nigerian domestic chicken. No significant differences in the average total leucocyte count between the male and female Muscovy ducks was observed. The average total leucocytes count for the Muscovy ducks were higher than those reported for the temperate breeds of ducks and the Nigerian domestic chicken. Higher average lymphocyte count was recorded for the male Muscovy ducks (72.75%) than the female Muscovy ducts (61.37%) while a lower basophil average counts was recorded for the male Muscovy ducks (0.75%) than the female Muscovy ducks (1.5%). The esinophils had a diverse number of lobulation on their nucleus and spherical intracytoplasmic granules while the heterophils had an irregular cellular outline and a spindle shaped intracytoplasmic granules. Taken together, to the best of our knowledge, this is the first comparative study of the blood cellular composition in Muscovy ducks in Nigeria.
  M.H. Sulaiman , L. Saidu and P.A. Abdu
  This report describe a rare case of congenital defects involving the atresia of the left oviduct with the accompanying abnormalities of ovaries and caecum observed in a 12-month-old layer presented to the Avian Ambulatory Clinic of the Veterinary Teaching Hospital, Ahmadu Bello University, Zaria. At post mortem, a thin wall oviduct measuring 18 cm long, which opens into the cloaca, was noticed, while the left oviduct was completely absent. In addition the right hypolastic oviduct had a large cyst, with a morphometric measurement of 18 cm by 14 cm by 7 cm and containing 1.25 litres of clear non proteinous fluid, weighing 1.01 kg. When the cystic fluid was cultured in blood agar, at 37oC for 72 h, no bacteria colony growth was observed. However biochemical analysis revealed a composition of electrolytes. The bird also had undeveloped ovaries, malformed illeocaecal junction cranially measuring 6.5 cm. To our knowledge, this is the first case report of congenital abnormalities of the atresia of the left oviduct, malformed caecum and hypoplastic right oviduct in ISA-Brown layer bird in Nigeria.
  M.H. Sulaiman , C.A. Kudi , J.O. Hambolu , S.A. Ojo , I.M. Hussaini , M.M. Roebuck , A.R. Dodson , T.R. Helliwell , Q. Yin and S.P. Frostick
  Cell-cell attachment in the epithelial and endothelial cell sheets are held in place by tight junctions, adherens junctions and desmosomes. Tight junctions are made up of three integral membrane proteins, namely; claudins, occludin and junctional adhesion molecules. There is a wealth of evidence in the literature suggesting that tight junctions are primarily involved in the sealing of cellular sheets thereby regulating paracellular ion movements between sheets of epithelial cells. Thus, tight junction proteins constitute an essential part of this barrier in perineurial and endothelial cells particularly in peripheral nerves. Schwann cells in the peripheral nerves are isolated from the adjacent tissues by the perineurium which creates a diffusion barrier responsible for the maintenance of endoneurial stability. Some researchers have suggested that oncogenic Ras down regulates tight junction barrier functions thereby leading to the disruption of these barriers. Therefore, the loss of tight junction barriers function may enable growth factors to penetrate from the surrounding tissues to quiescent Schwann cells of the peripheral nerves that are capable of proliferation thus, ensuing neurofibroma formation. Here the researchers demonstrate the cellular expression of Zonula Occludens-1 (ZO-1) to the perineurial fibroblasts of the normal peripheral nerve and benign neurofibroma.
  M.H. Sulaiman , C.A. Kudi , J.O. Hambolu , S.A. Ojo , I.M. Hussaini , M.M. Roebuck , A.R. Dodson , T.R. Helliwell , Q. Yin and S.P. Frostick
  Neurofibromatosis type 1 (NF1)-Von Recklinghausen disease is the most frequent single-gene disorder that affects the nervous system. NF1 is inherited in an autosomal dominant manner with an estimated incidence of about 1 in 3000. The NF1 gene is mapped to chromosome 17, (17p21). Its product neurofibromin reduces cell proliferation. The apparent lack of a suitable in vitro model of human Neurofibromatosis type 1 (NF1) has directly limited the progress of research on its tumourigenesis and therapy. The problems of establishing pure NF1 culture include the control of fibroblasts proliferation. At the moment, efforts put in place in order to extend the life span of NF1 Schwann cells and to suppress the growth of fibroblasts has yielded poor results in neurofibroma. Tumour specimens from 17 patients were processed for cell culture and grown at 37°C with 5% CO2 and 100% humidity. Key modifications in limiting fibroblast proliferation included Dulbecco modified medium devoid of 10% foetal calf serum at the initial stage of the cell culture. Following 60% confluence, the unattached cells (Schwann cells) were preferentially detached. The presence of Schwann cells and the absence of fibroblast were confirmed through the staining with S-100 protein and vimentin primary antibodies. Light microscopy demonstrated the typical spindle-shaped cells. Thus, the researchers describe an easy and efficient method of obtaining Schwann cells from NF1 tissues. These pure cultures of Schwann cells are useful tools for the study of the pathogenesis of NF1 in vitro.
  M.H. Sulaiman , L. Saidu and P.A. Abdu
  This study describe a rare case of congenital defects involving the atresia of the left oviduct with the accompanying abnormalities of ovaries and caecum observed in a 12 month old layer presented to the Avian Ambulatory Clinic of the Veterinary Teaching Hospital, Ahmadu Bello University, Zaria. At post mortem, a thin wall oviduct measuring 18 cm long which opens into the cloaca was noticed while the left oviduct was completely absent. In addition the right hypolastic oviduct had a large cyst with a morphometric measurement of 18 cm by 14 cm by 7 cm and containing 1.25 L of clear non proteinous fluid, weighing 1.01 kg. When the cystic fluid was cultured in blood agar at 37°C for 72 h, no bacteria colony growth was observed. However, biochemical analysis revealed a composition of electrolytes. The bird also had undeveloped ovaries, malformed illeocaecal junction cranially measuring 6.5 cm.
 
 
 
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