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Biomedical subjects

R O Ramadan

Publications and source records attributed to R O Ramadan.

At least 19 recordsLinked to original sources
PubMed2004

Abortions, stillbirths and deformities in sheep at the Al-Ahsa oasis in eastern Saudi Arabia: isolation of a bluetongue serogroup virus from the affected lambs.

A wave of abortions, stillbirths and deformities in sheep occurred at the Al-Ahsa oasis in the eastern region of Saudi Arabia in the second half of 1999. The abortions were recorded in August and September and stillbirths and deformities in neonates were observed in October. Adult sheep were clinically normal. A virus was isolated in chicken embryos, adapted to Vero cell culture and further identified as bluetongue (BT) virus. The virus isolated was not neutralised by the Akabane virus. Reference hyperimmune serum against antibodies to BT virus detected in the sera of the dams gave positive results for BT but negative results for both Akabane and bovine viral diarrhoea virus. It was concluded that the outbreak was caused by a virus of the BT serogroup. The authors present the clinico-pathological and epidemiological situation of the disease outbreak.

Abortion, Veterinary↗
PubMed1999

An eruptive moderate form of camelpox infection in dromedary camels (Camelus dromedarius) in Saudi Arabia.

An eruptive moderate form of camelpox infection is reported in camels aged three to four years from the Al-Ahsa region of Saudi Arabia. The clinical signs were moderate in nature (between the 'mild' and the 'severe' form). The morbidity rate was 100% while the case fatality rate was 0%. Camelpox virus was isolated and identified using electron microscopy and serological analysis.

Animals↗
PubMed1996

A dicephalic goat with other defects.

A case of dicephalus was reported in a black-coat female goat kid which survived for 18 h. The head was joined at the level with the axis. The trunk was single and the kid stood on four legs. The goat had duplication of the oesophagus, the heart, the lungs, the spleen and the liver. The associated defects were in the form of polycystic kidneys, unilateral atlanto-occipital fusion and pervious urachus.

Abnormalities, Multiple↗
PubMed1992

Ectopic mammary tissue in the vulva of goats.

Ectopic mammary tissue was described in ten goats belonging to the Nubian and Syrian breeds. This consisted of multiple cavitations containing white milky fluid, which greatly resembled milk in colour, odour and composition. Histologically, the tissue was composed of alveoli lined by cuboidal epithelium and contained pinkish staining secretion. Surgical removal of the tissue was achieved without complications.

Animals↗
PubMed1991

Bilateral scrotal hysterocele in an intersex goat.

A bilateral scrotal hysterocele is described in a male pseudohermaphrodite goat. The surgically removed tests were devoid of spermatogenic cells. Serum androgens showed normal levels before surgery but dropped following removal of the gonads.

Animals↗
PubMed1991

Genital bovine papillomavirus infection in Saudi Arabia.

Genital bovine papillomavirus infection was observed for the first time in the Al-Ahsa region of Saudi Arabia. The disease involved 1 female and 2 male 2-4-year-old crossbred cattle. Fibropapillomas (warts) were limited to the prepuce and vulva. Electron micrographs of thin sections of the lesions revealed the presence of intranuclear viruslike particles. Using a broadly cross-reactive rabbit polyclonal antiserum directed against papillomavirus group-specific antigens, the infection was confirmed by immunohistochemical staining of paraffin-embedded tissues to be due to a papillomavirus. Staining with a series of monoclonal antibodies of various specificities indicated that the virus was bovine papillomavirus type 1. Attempts to propagate the virus by inoculation of tumor homogenates onto chorioallantoic membranes of chicken embryos were unsuccessful.

Animals↗
PubMed1991

Squamous cell carcinoma in sheep in Saudi Arabia.

Squamous cell carcinoma was recorded in 22 Nadji and 3 Maeimi sheep aged 3-6 years, of which 22 were females. Sixteen tumours involved the eyes, 7 occurred in the skin at different body sites, one developed in the ear and another in the rectum. In five cases secondary deposits were seen in the lymph nodes, nasal passages and upper lip. Surgical treatment was successful in the early stages of tumour development, but in advanced cases recurrences were noted. Histologically the tumours were typical for squamous cell carcinoma and most of them were well differentiated. Solar radiation was pointed out as a possible factor in the aetioloy of the tumour.

Animals↗
PubMed1990

A functioning udder in a male goat.

A functioning udder is described in a 7-year-old Nubian male goat. The defect was not observed in any of his several off-spring. His semen had few dead sperm and his serum testosterone level was low. The udder was removed surgically. Histologically, the udder showed dense connective tissue lobules composed of acinar or tubulo-acinar structures and the teat orifice had no muscle sphincter.

Animals↗
PubMed1988

Malignant melanoma in goats: a clinico-pathological study.

The clinicopathological features of 62 cases of malignant melanoma in goats in Sudan are described. The tumours occurred most frequently in grey or brown goats. The predilection site was the perineum. The tumour invaded locally and metastasized through lymphatics and blood vessels. Surgical excision of the tumour was followed or preceded by lymphadenectomy in some cases. The tumour was highly malignant and carried a poor prognosis. Possible aetiological factors are discussed.

Age Factors↗
PubMed1988

Intersexuality in goats.

Six cases of intersex goats were investigated. Five of these animals had testicular tissues (testes) situated prepubically inside a skin pouch. The testicular tissues of the sixth goat were attached to the sides of the urinary bladder. All of the four animals that were studied by radiography, surgical exploration and/or pathology had uterine tubular structures but no ovarian tissues were found in them. Thus at least four of these goats were male pseudohermaphrodites.

Journal Article↗
PubMed1987

Chronic obstructive mastitis in the camel. A clinicopathological study.

Unilateral chronic mastitis in three she camels was due to obstruction of the teat canal by keratin. This lead to dilatation of the ducts, retention of milk and secondary bacterial infection. The teat canals and dilated ducts were lined by stratified squamous epithelium. There was excessive periductal fibrosis. Pasteurella hemolytica was isolated from one animal and Staphylococcus aureus from another. The fluid from the third animal was sterile. The condition was treated successfully by surgical amputation of the affected halves of the udder.

Animals↗
PubMed1979

Disturbance in the growth of the tibia and femur in dogs.

The clinical and radiographic features associated with premature cessation of the growth of the tibia (four) and femur (eight) in 12 dogs are described. Surgical correction of the resultant deformity was possible in only a few cases. Trauma was thought to be the cause of the local growth plate disorder.

Animals↗
PubMed1975

Primary ocular melanoma in a young horse.

The clinical features and pathology of an ocular melanoma in a young born-grey mare are described. The tumour, possibly arising on the cornea, invaded the eye and extra-orbital muscles. Histologically; it consisted predominantly of spindle-shaped and polygonal cells containing melanin.

Animals↗