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Biomedical subjects

S Prakash

Publications and source records attributed to S Prakash.

At least 343 records · Page 19Linked to original sources
PubMed1967

Biochemical aspects of parasitism by the angiosperm parasites I. Phosphate fractions in the leaves of loranthus and hosts.

The leaves of Dendrophthoe falcata growing on different trees had differing dry solid content. With 1 exception, the parasite leaf contained less dry solid than host leaf.A characteristic feature of the loranthus parasite was the accumulation of phosphate in excess of that present in host leaves. Expressed as percent of the total phosphorus, the parasite tissue contained significantly less acid-insoluble phosphate than the host leaves. When the acid-insoluble material was fractionated into phospholipid, RNA, DNA and phosphoprotein, every component was found to be present in a smaller amount in parasite than in host leaf, expressed as percent of total phosphate in leaves.A comparative study of the phosphate fractions in the infected and uninfected branch of infected host tree revealed that, without exception, there was a demonstrable increase in the DNA content of the infected branch.

Journal Article↗
PubMedDate not supplied

Lateralised sympodia.

Explore the source record for details and available documents.

Abnormalities, Multiple↗
PubMedDate not supplied

Skeletal maturity of well-off children in Chandigarh, North India.

Attained mean heights, weights and skeletal maturity assessed by the TW2 method of well-off North Indian (Chandigarh) children ranging in age from 6 years to 12 years (96 girls) and 14 years (202 boys), were compared with British Standards. The mean height of girls remained close to the 50th centile and their weights to the 25th centile. Boys' mean heights and weights were close to the 50th centile up to age 9 years; later they slowly shifted to the 25th. Girls' RUS skeletal maturity remained between the 50th and 75th centiles of the British standards while boys, though having a tendency to be advanced at certain ages, were practically at par with the British 50th centile. The pattern of carpal maturity was different; girls reached full carpal maturity at the same age as British girls, but boys showed retardation.

Adolescent↗
PubMedDate not supplied

Crown dimensions of deciduous and permanent teeth of Jats from Haryana (India).

Tooth crown dimensions of deciduous and permanent dentition have been measured in 356 male and 292 female Jats from Haryana, an important agriculturally-based community in North India. While the second molar is the biggest tooth of the deciduous dentition, the first molar showed greater mesiodistal and buccolingual diameters in the permanent dentition. Sex differences in the two dentitions were significant, the differences being more marked in the permanent teeth.

Demography↗
PubMedDate not supplied

Age at menarche in Sri Lankan Tamil girls in Jaffna.

Using the status-quo method and Probit analysis, the median age at menarche of Sri Lankan Tamil girls (N = 333) from a middle socio-economic group was estimated as 13.78 +/- 0.07 years with a standard deviation of 1.01 years. This is about one year later than the median for the urban and about six months earlier than the median for the rural girls of Sri Lanka of the 1950s. However, this median age estimate agrees well with the results of an urban Madras sample. The reliability of the present finding is discussed.

Adolescent↗
PubMedDate not supplied

Single occasion means of height and weight of Sri Lankan Tamil children from Jaffna.

Little published material is available on physical growth in any Sri Lankan population. This paper reports attained mean heights and weights of middle class Tamil children from Jaffna, based on single occasion measurements of 358 boys and 517 girls ranging in age between 6 and 17 years. The cross-sectional height and weight data of both boys and girls show a typical pattern. Boys are taller and heavier up to 9 years, then girls lead in both the measurements due to their pubertal phase of rapid growth. Boys supersede them again when they enter into their rapid growth phase, i.e. in height at 13 years but their mean weights remain lower till 16 years. Thus at 17 years boys on average are 5 cm taller than girls. With reference to British standards the attained means of both boys' and girls' height remain around the 10th centile, but later shift to the 3rd centile. In weight, however, they remain below the 3rd centile and indeed much below the range during the later part of the pubertal phase. Apart from nutrition and living conditions, how much of this pattern is influenced by ethnic and tropical climatic factors is still unclear.

Adolescent↗
PubMedDate not supplied

Tempo-unconditional 1-year bone score velocities in well-off north-west Indian children.

Tempo-unconditional 1-year bone maturity score velocities in well-off 6-16 year-old North-west Indian children from Chandigarh (245 boys and 238 girls) are presented for the first time using the TW2 system. Rater's replicability/comparability was high. The peak RUS bone maturity score velocity is reached at 13 years in girls and at 15 years in boys, maintaining a standard 2-year difference. Velocities of the three bone maturity scores are relatively larger, but their respective standard deviations are smaller than those reported for American whites and blacks. North-west Indian children seem to be maturing faster than the British standards.

Adolescent↗
PubMedDate not supplied

Differences in adult height between well-off north-west Indians and Britains as a product of lower height gain per unit bone maturity advance during the adolescent years.

Attained mean heights of well-off North-west Indian children showed close parity with British children up to 12 years in girls and 14 years in boys. Thereafter their attained means become less, resulting in shorter mean adult stature. Comparison of the tempo-unconditional single 1-year velocities of height showed that the total adolescent gain in both the populations was similar. The shorter mean adult height in well-off North-west Indians could be explained by lower height gain per unit RUS bone maturity score advance (growth potential). This may result from tropical climate and lower amounts of circulating calcium.

Adolescent↗
PubMedDate not supplied

Growth of sitting height, subischial leg length and weight in well-off northwestern Indian children.

This paper reports attained means and tempo unconditional 1-year velocities of sitting height, subischial leg length and weight of well-off northwestern Indians based on two time measurements taken by the same measurer. A 3-year difference is observed in reaching the peak sitting height velocity between girls (11 years) and boys (14 years) as in their peak height velocity. While in girls the peak subischial leg length velocity is reached a year earlier, at 10 years, than that of their peak sitting height velocity, in boys it is reached at the same time as in sitting height (14 years). Comparisons of the attained means with the British standards show that while sitting height is shorter throughout in the Indians, the subischial leg length is longer until 12 years in girls and 14 years in boys, after which it becomes equal to that of the British. This differential growth of the two segments comprising stature produces shorter adult height. Though the weight velocities are not dissimilar, the Indian children are lighter throughout. This body shape and size, with relatively longer legs, is a useful adaptation to the northwestern Indian climate.

Adolescent↗
PubMedDate not supplied

Artificial cell microcapsules containing genetically engineered E. coli DH5 cells for in-vitro lowering of plasma potassium, phosphate, magnesium, sodium, chloride, uric acid, cholesterol, and creatinine: a preliminary report.

Lowering of plasma Mg, P, Na, Cl, uric acid, cholesterol, and creatinine is required in renal failure and other diseases. In this preliminary report, we studied the ability of artificial cells microencapsulated genetically engineered E. coli DH5 cells in lower K, Mg, P, Na, Cl, uric acid, cholestrol, creatinine, and billirubin from plasma in-vitro. Result shows that this novel approach has the ability to significantly lower these metabolites from the plasma in-vitro.

Animals↗