Prof. Dr.Abdulaziz Jamil Muhanna

 Prof. Abdulaziz Jamil Al-Ani Qualification: BVM&S (Baghdad) MSc in Parasitology (Wales) (1980) PhD in Parasitology (Wales) (1985) Obtained the title of Professor 2012 from the University of Mosul, Iraq I was registered to teach Parasitology (theoretical and practical) for undergraduate and graduate students at the College of Veterinary Medicine, University of Mosul since 1985. I supervised a number of master’s students in addition to 2 doctoral students at the College of Veterinary Medicine, University of Mosul. I was a member and chief external examiner for postgraduate students. I was a member of the scientific committee at the College of Veterinary Medicine in Mosul. I was previously head of the Microbiology Department at the College of Veterinary Medicine, University of Mosul. I was retired in 2017, and after that I joined as a faculty member as a professor of parasitology at Al-Noor University College.

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Most cited scientific research

Abstract :

The pathogenecity of Theileria recondita infection in both splenectomised and non-splenectomised sheep was investigated. Following transmission of T. recondita to splenectomised animals both by adult ticks and blood transfusion a fever and severe macrocytic hypochromic anaemia developed which lasted the 9 days or more of patent infection. The prepatent period following tick attachment was about 8 days, but was variable following blood transfusion. Infection of normal animals caused a transient macrocytic hypochromic anaemia and slight fever which lasted throughout the period of low parasitaemia (7 days).

The increase in mean cell volume was due to an increase in numbers of juvenile red cells in the peripheral blood. There was a transient neutrophilia and lymphocytopenia but no significant changes in thrombocyte or leucocyte numbers.

Abstract :

Adult Haemaphysalis punctata (Canestrini and Fanzago 1877) collected from an area of rough grazing at Mynydd Mawr, Aberdaron, North Wales, transmitted Theileria recondita (Wales); field-collected nymphs failed to transmit this parasite. Following adult tick infestation, piroplasms were first observed in the blood of splenectomised infested sheep 8 days after tick attachment; the parasitaemia lasted 9 days.

The parasite can also be transferred by syringe passage of blood from splenectomised to normal sheep and vice versa. Parasitaemias were higher and of longer duration in splenectomised animals. A rise in parasitaemia was detected in a splenectomised ewe after parturition, 19 months following blood-transmitted infection from which it had recovered clinically.

The morphometrics of the piroplasms of T. recondita (Wales) were investigated; the rod and the ring forms were the most common. The mean length of the rod form was 2.09 μm and the mean diameter of the ring form was 1.22 μm.

Abstract :

Babesia motasi (Wales) was transmitted to sheep by larvae, nymphs and adult female Haemaphysalis punctata ticks which were either collected from rough grazing pasture, at Mynydd Mawr, Aberdaron, North Wales, or from laboratory cultures derived from ticks collected at the above site. Both transovarial and transstadial transmission of infection were demonstrated. Only larvae were shown to pick up infection.

The parasite could not be demonstrated in intact sheep, either in blood films or following passage of whole blood from intact into splenectomised sheep. Organisms were detectable only in peripheral blood following blood transmission between splenectomised animals or in splenectomised sheep which were tick-infested. In such sheep a parasitaemia occurred 8–9 days after infected ticks started to feed and was accompanied by a mild fever.

Splenectomised animals which recovered from acute infection remained as subclinical carriers but infection was eliminated with Ludobal, rendering animals resusceptible to infection.

Morphological studies indicated that B. motasi (Wales) is similar to descriptions of isolates in Sweden, Holland and W. Germany but unlike an isolate from Turkey. The most common form is a double pyriform with a mean length of 2.234 μm.

Abstract :

Studies on the pathogenesis of Babesia motasi (Wales) infection following blood transfusion of infected blood to normal or splenectomised recipients showed that the intact animal is refractory to infection but that infection in splenectomised animals caused weight loss, fever, anorexia, lassitude and a macrocytic hypochromic anaemia which coincided with the peak of parasitaemia. There was an initial leucocytosis, largely due to a neutrophilia.

The prepatent period following blood transfusion was 2–3 days.

Unconjugated and conjugated (direct) bilirubin levels increased from pre-infection levels to peaks of 1.43 and 0.70 mg/100 ml of blood, respectively. Serum glutamic pyruvic acid transaminases (SGPT) increased slightly but serum glutamic-oxaloacetic acid transaminases (SGOT) and blood sugar (glucose) levels did not show significant changes after infection.

Total serum protein levels increased temporarily and then returned to normal. Blood urea nitrogen levels increased, with biphasic peaks (76.32 and 86.29 mg/100 ml) on Days 2 and 8 postpatency. Clinical infections even in splenectomised sheep, were mild and of short duration, although recovered sheep remained carriers.