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Biomedical subjects

A A Nasser

Publications and source records attributed to A A Nasser.

9 recordsLinked to original sources
PubMed2002

Additional case of Ramichloridium mackenziei cerebral phaeohyphomycosis from the Middle East.

In this report we describe a case of cerebral phaeohyphomycosis involving a 56-year-old Egyptian male who worked as a mason in Kuwait for 6 years. Computerized tomography scan of the brain revealed presence of a large abscess in the left occipital lobe. Aspirated pus from the abscess showed branched, septate, hyphae with light brown pigmentation. Cultured pus grew the fungus Ramichloridium mackenziei. Despite amphotericin B (1 mg kg(-1) per day) therapy for 2 weeks, the patient expired. The isolate was later found to be resistant to amphotericin B ( > 32 microg ml(-1)). Antifungal susceptibility testing to other agents was also performed.

Amphotericin B↗
PubMed2001

Dynamic thoracoplasty for asphyxiating thoracic dystrophy.

The life-saving procedures to expand the chests of infants born with Jeune asphyxiating thoracic dystrophy provide a static solution incapable of responding to the growth demands of thriving patients. We describe an instrument that provided a dynamic solution for an infant, where an initial methyl methacrylate midsternotomy spacer placed at 4 months of age was followed at 11 months with recurrence of his difficulties. At 8 months after the second operation the patient was stable and thriving with no recurrence of symptoms. The instrument modifications, limitations, and possible complications are described.

Asphyxia↗
PubMed1998

Muscle transposition flap for salvage of exposed peripheral prosthetic vascular grafts.

Infection of prosthetic vascular grafts, although infrequent, is a dreadful complication in vascular surgery. It is a challenge for the surgeon and is life- and limb-threatening to the patient. Conventionally, infection involving a foreign body is eradicated by removing the foreign body. Despite its theoretical appeal, this solution is fraught with danger--a high mortality rate that ranges between 10% and 30%, a high rate of protracted postoperative morbidity, and a limb amputation rate as high as 70%. The salvage of infected prosthetic vascular grafts by prompt soft-tissue coverage with transposition muscle flaps in 3 consecutive patients treated during a period of 12 years is the subject of this report.

Aged↗
PubMed1996

Adsorptive stripping voltammetric analysis of 2,4,6-tri(2'pyridyl)-1,3,5-triazine at a mercury electrode.

The redox behaviour of adsorbed species of 2,4,6-tri(2'-pyridyl)-1,3-5-triazine (TPTZ) at the surface of a mercury electrode was examined using cycling voltammetry. Based on the adsorption and accumulation of TPTZ at the charged mercury surface cathodic adsorptive stripping voltammetry (CSV) is applied for the trace determination of TPTZ using a differential pulse (DP) technique. Experimental and operational parameters for the quantitative analysis of TPTZ are optimized and the detection limit was found to be 3x10(-9) mol/l. The effect of some interferences, e.g. organic compounds, cations and anions, are investigated.

Journal Article↗
PubMed1991

Environmental health in primary schools in a developing country.

In an effort to elucidate the environmental health in developing countries, the environmental and sanitary conditions of Riyadh primary schools were assessed by use of a scoring evaluation sheet for 20 schools representative of primary schools of Riyadh. 20% of schools have been found to be ideally situated and only one fourth of schools with proper building. As regards class rooms, only 25% of them have adequate floor area, window area and are suitably illuminated. Drinking fountains per pupil were inadequate. Overall, environmental rating of 10% excellent, 30% good, and 60% bad were detected in present study. The bad situation of almost two-thirds of primary school buildings in Riyadh is alarming. Remedial suggestion have been forwarded.

Child↗
PubMed1984

Infectious tenosynovitis in broilers and broiler breeders in Egypt.

Two infectious tenosynovitis-producing viruses were isolated from tendon sheaths and synovial fluids of 59 broilers and 15 broiler breeders obtained from different flocks in Egypt during June to October 1983. The viruses grew well on the chorioallantoic membrane of developing chicken embryos, produced small localized white pock lesions with oedematous swellings at the inoculation sites and death of most of the embryos 72 to 96 hours post-inoculation. They also induced cytopathic effect in chicken embryo rough, Vero and MS cell lines. The viruses were neutralized by reovirus S1133 antiserum, both in tissue culture and on the chorioallantoic membrane. Inoculation of the viruses into 2-day-old broiler chicks via the foot pad, intramuscular and oral routes reproduced the disease with the development of characteristic clinical, pathological and serological responses. The infection was transmitted to in-contact control chicks. This is the first report of the disease and of the isolation and identification of the causative virus in Eqypt.

Animals↗