Cutaneous Manifestations of Chikungunya Fever.

Chikungunya fever, a re-emerging RNA viral infection produces different cutaneous manifestations in children compared to adults. 52 children with chikungunya fever, confirmed by positive IgM antibody test were seen during 2009- 2010. Pigmentary lesions were common (27/52) followed by vesiculobullous lesions (16/52) and maculopapular lesions (14/52). Vesiculobullous lesions were most common in infants, although rarely reported in adults. Psoriasis was exacerbated in 4 children resulting in more severe forms. In 2 children, guttate psoriasis was observed for the first time.

Extracellular electrical activity from the photoreceptors of midge.

The ontogeny of photosensitivity has been studied in a holometabolous insect, the midge Chironomus ramosus. The life cycle of midges shifts from an aquatic environment to a non-aquatic environment. Extracellular electrical activity of photoreceptor organs was recorded at larval and adult stages. We found an increase in photosensitivity as the larva metamorphosed to the adult stage. This is the first report of changes in photosensitivity during the development of any insect described in an ecological context.

Child rearing and positive deviance in the development of preschoolers: a microanalysis.

OBJECTIVE: To study the maternal child-rearing behaviors, parental attributes and socio-economic status of the family and to analyze their association with positive deviance in the developmental status of preschool children between 1-5 years of age. DESIGN: Cross-sectional. SETTING: Rural community. METHODS: A total of 260 children and their mothers were evaluated. Weight and height-for-age indices were used to assess growth. ICMR Developmental Screening Test was used to assess psychosocial development. Bhatia's Performance Test was used to assess maternal intelligence. Narayan Rao's Rating Scale was used to assess socio-economic status and a child-rearing interview schedule developed and pretested for the purpose of the study to assess maternal child-rearing practices and behaviors. RESULTS: Stepwise multiple regression with psychosocial development as dependent variable indicated significant associations between specific maternal behavioral categories and psychosocial development of 1-5 year old children. Children, whose mothers were responsive to their needs, were consistent in their interaction with them and were also emotionally stable during specific child rearing situations were those identified as "positive deviants" with regard to their development. Other factors, which were significantly associated with positive deviance in children, were paternal literacy and nuclear type of family. Significant differences were observed between genders. CONCLUSIONS: The data generated from the study could identify the important factors that were associated with "positive deviance" in the development of children. These factors can be useful components for parental counseling in clinical practice and as educational material in community programmes such as the ICDS and self-help groups at the village level.

Nutritional status, psychosocial development and the home environment of Indian rural children.

OBJECTIVE: To assess the psychosocial development of well nourished and malnourished children aged 0-6 years and to identify the microenvironmental factors influencing their growth and development. DESIGN: Multicentric cross-sectional. SETTING: Rural Communities. SUBJECTS: Total of 3668 children of whom 2212 were well nourished and 1456 were malnourished. METHODS: Weight for age index to assess nutritional status. Cut-off < 75% NCHS standards used based on Gomez grades II and III being malnourished and Normal and grade I being well nourished. ICMR Developmental Screening Test to assess psychosocial development and modified WHO parental interview schedule to assess family and micro-environmental factors. RESULTS: Malnourished children attained developmental milestones at a later age. Developmental delay among the malnourished was especially observed in areas like vision and fine motor, language and comprehension and personal social. The delay was to the extent of 7-11 months in these areas in different age groups. Paternal involvement with child care especially, father spending time, telling stories and taking child for outing was found to be important for positive psychosocial development. Other significant factors included parents teaching child, small family size and paternal occupation. Child's appetite, absence of health problems, parental age and family having own house and electricity were the factors significantly related to better nutritional status of children. CONCLUSION: Factors identified in the study are important for the development of relevant intervention at the home level. Appropriate multifaceted community based programmes such as the ICDS are also required for stimulating growth and development of backward rural children.

Screening test battery for assessment of psychosocial development.

A multicentric cross-sectional collaborative study was undertaken in 3 centres in India with the main aim of developing simple and reliable indicators for the early detection of developmental disabilities in children under 6 years of age and to compare the age of attainment of developmental milestones in children in the three regions. The study provided a simple low-cost and culture-appropriate psychosocial developmental screening test battery which can be used with ease by trained public health grass-roots functionaries. This instrument was standardized on a large rural, tribal and urban sample comprising more than 13,000 children from 3 regions in India. The procedure for sampling, selection of items and methodology for standardization of the instrument in the Hyderabad region detailed in this paper were replicated in other centres as well. Quality control of data was ensured through inter-rater and test-retest measures of reliability. During pre-testing, 66 culture-appropriate milestones were selected finally from a larger item pool. The 50th centile age reference values of the Hyderabad study children and those obtained by other 2 centres were comparable.

Chemical probes for water oxidation cycle of photosystem II: Part 2--Effect of histidine modifying reagent on thermoluminescence peaks of spinach chloroplasts.

A modification of water oxidation complex in spinach chloroplasts by rose bengal (RB), a known histidine modifying agent, has been studied using thermoluminescence (TL) technique. The changes in the TL profiles at low concentrations of the dye are explained on the basis of alterations in the protein dynamics while those at higher concentrations of the dye are related to the oxidation of histidine residues.

Effect of metal chelators on thermoluminescence peaks of spinach chloroplasts and photosystem II particles: probing the water oxidation cycle with 8-hydroxyquinoline.

Inhibition of photosystem II (PS II) activity by 8-hydroxyquinoline (8-HQ) has been investigated in case of spinach chloroplasts and isolated photosystem II particles using the thermoluminescence technique. In presence of 8-HQ, water to methylviologen (MV) photoreduction in isolated chloroplasts is inhibited while the reduction of dichlorophenol indophenol is inhibited in both chloroplasts as well as in photosystem II particles. The activity can be restored fully by addition of diphenylcarbazide (DPC), suggesting that the donor side of water oxidation complex is affected. The changes in the thermoluminescence peaks indicate that the charge recombination processes involving S2 or S3 states of the Kok's cycle are probably affected by 8-HQ treatment.

Study of amplitude frequency spectra of the compound action potentials recorded from normal and M. leprae infected mice using Fourier series analysis.

Compound action potentials recorded from normal and M. leprae infected mice sciatic nerves were analysed in frequency domain using Fourier Series Analysis. Changes in myelinated fibre potentials were detected as early as 2nd post-inoculation month. This technique could be further developed to aid in early diagnosis of leprosy.