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Biomedical subjects

A Cavdar

Publications and source records attributed to A Cavdar.

9 recordsLinked to original sources
PubMed1996

Selenium status of healthy Turkish children.

Selenium concentrations, in blood plasma, red blood cells, hair of 61 healthy children, ages 0-14 yr, were determined using hydride generation atomic absorption spectrometry. Starting from late lactation period, selenium concentrations in all these matrices were found to be increasing with age. A good correlation was found between erythrocyte and plasma, hair and plasma, and hair and erythrocyte selenium concentrations. Although plasma, erythrocyte, and hair selenium concentrations of girls seemed to be higher than that of boys (only in erythrocytes), selenium concentrations of girls were found to be significantly (p < 0.002) higher than that of boys, 71 +/- 9 ng/mL, vs 65 +/- 10 ng/mL, respectively. Selenium status of Turkish children is found to be lower than that found in the literature; marginal selenium deficiency could be important in the development of some selenium deficiency related diseases. There is a need for extension of this study to healthy children from different regions in Turkey and to different disease states.

Adolescent↗
PubMed1987

Effects of zinc supplementation on linear growth in beta-thalassemia (a new approach).

Linear growth was evaluated in 32 patients with beta-thalassemia major. At the beginning of the study of 40.6% of the patients were below the 10th percentile with biochemical evidence of zinc deficiency. Effects of zinc supplementation on growth velocity (height) were assessed in a controlled manner. Twenty-one children received oral zinc sulphate for a period of 1 to 7 years (15 early- and 6 late-supplemented cases), while the remaining 11 thalassemics were maintained only on conventional transfusion therapy. The mean height velocity of early-zinc supplemented children was significantly greater than that of normal children (P less than 0.01). An increase in height was also observed in the patients who received delayed zinc retardation. The present study demonstrated that zinc deficiency is one of the factors responsible for retarded linear growth in beta-thalassemia major. Only the patients who received zinc supplementation showed an acceleration of growth in height. Administration of zinc could, therefore, be considered as an effective adjuvant therapy in homozygous beta-thalassemia.

Adolescent↗
PubMed1978

[Use of thymus hormone in the demonstration of acute T-null cell lymphocytic leukemia].

The Authors studied the effect of the human serum thymic factor on the peripheral-blood leukocytes from ALL patients, by testing the frequency of the E+cells by means of the e rosette assay before and after cell incubation with the above mentioned factor. In 3 out of 24 patients tested, the thymic factor incubation of peripheral-blood mononuclears increased the number of E+cells. The shift from R to E+cells caused by the human serum thymic factor occurred among null cells (E-, SM-Ig-). The possible value of the test in investigating whether a T0 leukemia might really exists is pointed out, as well as its prospective importance in monitoring the variations of the immature T cell counts in relationship to the patient's treatment and his disease course.

Adult↗
PubMedDate not supplied

Right atrial catheter-related complications in pediatric oncology patients: the situation in a developing country.

The complications of right atrial catheters (RACs) in pediatric oncology patients are unknown for centers in developing countries. This study examined the complications of RACs at Ankara University Medical School, Turkey. A total of 90 RACs were placed in 61 children for long-term chemotherapy with a total experience of 15,536 catheter days. The rate of catheter-related sepsis was 4.9 episodes per 1000 catheter days. Coagulase-negative staphylococci and Candida species were the most common organisms, accounting for 25.0 and 13.1% of all organisms, respectively. The most common reasons for the removal of the RACs were infection (42.4%) and dislodgement (32.2%). The rates of complications were significantly higher in this study than in western studies. This increase could be explained by the differences in catheter care practices in the Turkish center. In conclusion, the use of RACs in a developing country necessitates an appraisal of the benefits and risks for each patient and improvement of catheter care procedures.

Adolescent↗