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At least 1,063 records · Page 59Linked to original sources
PubMed2001

An unusual presentation of an intra-parenchymatous frontal yolk sac tumour : case report.

Yolk sac tumours are rare conditions among the germ cell tumours. Intracerebral germ cell tumours are exceedingly rare. A 15 year old girl presenting with a one week history of raised intracranial pressure is described. She had bilateral papilloedema and a right 6th nerve palsy. CT scan showed an intra-parenchymatous right frontal ring enhancing lesion of 2 cms diameter. The patient underwent microsurgical total excision of the tumour, followed by chemotherapy. She was asymptomatic at three years following surgery.

Adolescent↗
PubMed1998

[Morphometrical study on inhibitory effect of vitamin B6 and banana-stem extract on calcium crystallization].

OBJECTIVE: To search for the anticrystallization mechanism by vitamin B(6) and banana stem extract. METHOD: Thirty-six male China-1 mice were divided into 4 groups: normal, crystallization, vitamin B(6) and banana-stem extract groups. Calcium oxalate crystallization was induced by 1% glycol and 1% ammonium chloride in the last 3 groups. Vitamin B(6) was then given to the 3rd group and banana stem extract to the 4th group for 3 weeks. At the end of 3 weeks, all the mice were sacrificed and the kidneys were taken for morphometrical studies using image analysis system and assayed for calcium oxalate. RESULT: Morphometrical area density and numerical density of crystallization was significantly less in the vitamin B(6) group and the banana-stem extract group as compared with the crystallization group, being the least in the banana-stem extract group. Oxalate in renal tissue was also significantly reduced. Both vitamin B(6) and banana stem extract had no effect on renal tissue calcium. CONCLUSION: Vitamin B(6) and banana-stem extract may be useful agents in the treatment of patients with hyperocaluric urolithiasis.

Animals↗
PubMedDate not supplied

Isolated noncompaction of the ventricular myocardium.

Noncompaction of the ventricular myocardium is a rare congenital disorder characterized by the presence of numerous prominent trabeculations and deep intertrabecular recessess which communicate with the left ventricular cavity. The disease uniformly affects the left ventricle, and sometimes also affects the right ventricle. Echocardiographic findings are important clues for the diagnosis. Clinical symptoms include signs of left ventricular systolic dysfunction even to the point of heart failure, ventricular arrhythmias, and embolic events. We describe an illustrative case of isolated noncompaction of the left ventricular myocardium in a two-year-old child with the typical clinical and echocardiographic features of the disease. The literature on the topic is reviewed.

Cardiomyopathies↗
PubMedDate not supplied

Indigenous hospital technology in Nigeria: problems and recommendations.

In Nigeria, after gaining independence there arose a national desire for industrialization in order to reduce the high cost of sustaining national development. This desire has its accompanying problems which are examined with reference to indigenous hospital technology. Solutions to these problems are also suggested.

Biomedical Technology↗
PubMed2001

The prevalence of, and factors related to, compliance with glove utilization among nurses in Hospital Universiti Sains Malaysia.

Increasing risk of HIV infections among health care workers has been a continuing concern. The study was designed to identify the compliance of glove utilization, and factors related to non-compliance. A sample of 150 staff nurses were recruited from the study population of 550 nurses in Hospital Universiti Sains Malaysia. Data were collected by using a structured self-administered questionnaires. The response rate was 98.4%. The study revealed a low compliance (13.5%) of glove utilization (for all 9 procedures), which varied among different procedures (27-97%). Younger nurses and those with shorter duration of working experience had better knowledge of Universal Precautions. Nurses in intensive care unit and operation theatre were better in both knowledge and compliance of glove utilization. The three commonest misconceptions were identified as "selective use of gloves for high risk groups and suspected cases", and "tendency to depend on HIV prevalence". Nurses reported practical problems including administrative and personal related such as "stock irregularity" (46%), "glove not available at the emergency sites" (44%), and "reduction of tactile sensation" (39%). It was concluded that poor knowledge and practical problems were possible responsible factors for the low compliance. A good training for nurses comprising principle and practice of Universal Precautions, updated knowledge of blood and body fluid borne infections and risk and its management, will probably improve the compliance.

Adult↗
PubMed2002

Clinical and laboratory features of congenital factor XIII deficiency.

OBJECTIVE: This is a retrospective analysis of the clinical and laboratory features of 17 cases of factor XIII deficiency that were followed in tertiary care hospitals in Riyadh, Kingdom of Saudi Arabia, over 20 years. Cases were referred to these hospitals from other health care centers in the country. METHODS: We performed a retrospective analysis of 17 cases of factor XIII deficiency comprising 11 males and 6 females, who were seen over a period of 20 years (1978-1998) in Riyadh, Kingdom of Saudi Arabia. Data variables including age, sex, origin, clinical presentation, bleeding time, prothrombin time, partial thromboplastin time, factor XIII screening and assay, hemoglobin, and platelet count were collected and analyzed. The diagnosis of factor XIII deficiency was made by urea clot lysis test alone in one patient and urea clot lysis test in combination with factor XIII quantitative assay in 16 patients. RESULTS: Eleven patients were males and 6 were females. Median age at the time of diagnosis was 9 years (3-29 years). Ten patients (59%) had a family history of excessive bleeding. Presenting symptoms included ecchymosis and recurrent hematomas in 12 patients (71%), bleeding after circumcision in 6 male patients (55%), umbilical stump bleeding in 7 (41%), poor wound healing and keloids in 3 patients (18%), and intracranial bleeding in 3 patients (18%). Other manifestations included cephalohematoma, abortion, abruptio placenta, and intraperitoneal bleeding (one patient each). Laboratory evaluation revealed a normal prothrombin time, partial thromboplastin time, bleeding time and platelet count in all patients. Factor XIII screening test was positive in all 17 patients tested and assay for factors XIII was <0.06 U/ml in 16 patients tested. CONCLUSION: Our data confirms that factor XIII deficiency is a rare bleeding disorder characterized by variable bleeding manifestations but consistent laboratory findings. The occurrence of keloid in our patient group may reflect the poor quality of the clotting, associated with loss of tensile strength of fibrin polymers, caused by factor XIII deficiency and leading to abnormally large scar formation.

Adolescent↗
PubMedDate not supplied

Routine medical examination of food vendors in secondary schools in Ilorin.

Street vended food is expanding in developing countries, but the safety of the food provided is doubtful. Hence there is need for this trade to be regulated. One of the common ways of regulating them in the developing countries is through medical examination of food vendors, which some international agencies have condemned because of its inefficiency in controlling food contamination and food borne diseases. This study was done to determine medical examination practices among the food vendors and to see whether the practice ensures food safety. A cross-sectional study of 185 food vendors in 58 secondary schools within the study area was conducted using a structured questionnaire and a checklist. 141 (76.2%) respondents had medical test done prior to [not readable: see text] employment. The medical examination was requested for usually by the principals (51.9%), schoolteachers (37.8%) and the school clinic staffs [not readable: see text]). The test carried out on these vendors are physical examination, stool and urine examinations for parasites. Periodic medical examination among the vendors are low with only 30 (21.3%) of the 141 vendors having undergone periodic examinations. Majority of the respondents (77.5%) did not report to the school authorities or present at the school clinics when ill. Lack of fund and non-compulsion of medical examination by the school authorities were some of the reasons given by the respondents for not undergoing medical test. Present practice of medical examination among the food vendors is not enough to ensure food safety. There is need to improve on this practice, if the policy of routine medical examination for food vendors is to be useful in controlling food borne diseases.

Adult↗
PubMedDate not supplied

How to adapt an ordinary drilling machine for orthopaedic surgery.

An orthopaedic drilling machine has number of revolutions per minute (r/min) < or = 750. This low r/min. accounts for low friction and less tissue damage during bone drilling. This is an advantage over the ordinary drilling machine whose r/min. > 2800. A method of converting it into an orthopaedic drilling machine is described here.

Bone and Bones↗
PubMed2002

Laboratory scale production of maltodextrins and glucose syrup from banana starch.

Banana starch was isolated to obtain maltodextrin by enzymatic hydrolysis with a heat-stable alpha-amylase. The maltodextrin obtained had a dextrose equivalent (DE) between 7-11 and showed suitable chemical characteristics for food application. Additionally, banana maltodextrin had a greater white color value and total color difference (delta E) than a sample of commercial maltodextrin. Further saccharification of the maltodextrins was carried out with amyloglucosidase and pullulanase at 60 degrees C during 24 h obtaining a glucose syrup. Chemical characteristics of banana glucose syrup were compared with those of a commercial syrup obtaining similar results. Nevertheless, the color of banana glucose syrup was clearer than the one of a sample of commercial syrup. However, it showed lower color stability than the commercial sample, i.e., the color of banana glucose syrup changed as a function of storage time. Banana starch may be used to obtain maltodextrins and glucose syrups with similar chemical characteristics of those obtained from maize starch. Particularly, the color of banana maltodextrin is adequate for its use in food products.

Glucose↗
PubMed2002

[DNA damage in female workers exposed to pesticides in banana plantations at Limón, Costa Rica].

Pesticide use in Costa Rica is very high and all year round. A high percentage of what is sprayed remains in the environment and in the living organisms around. This situation brings contamination and health problems to people in contact with them. The onset of adverse effects may be in the short or the long term, and symptoms vary widely, from headaches to cancer. Much research in this area has been devoted to acute or chronic effects, and not until recently to the genotoxic effect of pesticides. This study evaluated the genotoxic effect of pesticides used in banana packing activities, using the comet assay (single cell electrophoresis) as the biological marker in lymphocytes. This was a case-control double blind study of 30 exposed women from 15 banana farms and 28 women not occupationally exposed to pesticides from the same geographic area. Results show damage to single stranded DNA after working from 5 to 15 years (R2 = 0.12). In Costa Rica we do not have an historical record of the kind of pesticides used in banana farms, the period of time and for how long were they used. This prevented further analysis concerning dose, frequency of exposure and use of new or old kind of pesticides in the farms in relation to DNA damage. The comet assay is of value in the genetic monitoring of pesticide exposed populations.

Adolescent↗
PubMed2002

Parents' attitude towards children's first dental visit in the College of Dentistry, Riyadh, Saudi Arabia.

OBJECTIVES: The objectives of this study were to evaluate parents' awareness about the timing of the first dental visit for their children, the parents' attitude toward behavior modification for their children at the first dental visit, and to determine the main reasons for bringing the child to the dentist in the first visit among the Saudi parents attending the dental school at the College of Dentistry, King Saud University, Riyadh, Kingdom of Saudi Arabia. METHODS: A self-administered questionnaire consisting of 12 items was distributed to any adult patient reporting at the Registration Appointments and Records Division of King Saud University, College of Dentistry, Riyadh, Kingdom of Saudi Arabia, during the year 2001. The questionnaire response rate was 96.5%. RESULTS: Some parents reported that their child's first dental visit should be in the 3rd year (42%) while others thought it should be in the 6th year (34.4%). Seventy-three percent of the parents prefer behavior modification during the first dental visit. Regular visit (40.3%) and emergencies (28.1%) were the main reasons to bring the children to the dentist. CONCLUSION: These data indicate that there is a relatively low level of parents' knowledge about the timing of a child's first dental visit. The dental profession and pediatricians have major responsibilities to change this concept.

Adult↗
PubMedDate not supplied

Measurement of resistant starch by enzymatic digestion in starch and selected plant materials: collaborative study.

Interlaboratory performance statistics was determined for a method developed to measure the resistant starch (RS) content of selected plant food products and a range of commercial starch samples. Food materials examined contained RS (cooked kidney beans, green banana, and corn flakes) and commercial starches, most of which naturally contain, or were processed to yield, elevated RS levels. The method evaluated was optimized to yield RS values in agreement with those reported for in vivo studies. Thirty-seven laboratories tested 8 pairs of blind duplicate starch or plant material samples with RS values between 0.6 (regular maize starch) and 64% (fresh weight basis). For matrixes excluding regular maize starch, repeatability relative standard deviation (RSDr) values ranged from 1.97 to 4.2%, and reproducibility relative standard deviation (RSDR) values ranged from 4.58 to 10.9%. The range of applicability of the test is 2-64% RS. The method is not suitable for products with <1% RS (e.g., regular maize starch; 0.6% RS). For such products, RSDr and RSDR values are unacceptably high.

Enzymes↗