A LONGITUDINAL STUDY OF CHILDHOOD SEPARATION ANXIETY DISORDER AND ITS IMPLICATIONS FOR ADOLESCENT PSYCHOPATHOLOGY.

A prevalent psychiatric disorder called Child Separation Anxiety Disorder (SAD) is characterized by extreme discomfort when a child gets separated from their primary carers. While SAD's quick consequences on kids are well-researched, its long-term implications for teenage psychopathology have received less attention. This longitudinal study aims to ascertain the connection between child SAD and future psychopathological consequences in adolescents. 500 adolescents were chosen as part of the adolescent depression project, and at the age of 17, we retrospectively evaluated past and present mental disorders. At ages 25 and 32, they conducted diagnostic evaluations of these people during adolescence while they continued to monitor them. Based on childhood/adolescent assessments, the participants were split into different groups: SAD (n=34), other forms of Anxiety (n=76), a control group with combined psychiatric conditions (n=205), and mentally sound control group (n=185). Statistics were evaluated by hierarchical multiple logistic regression after various illnesses and pertinent demographic variables were considered. It implies that SAD has a high risk (80.2%) of being a significant risk indicator for the emergence of mental illnesses in young adults. This study highlights the importance of early SAD management and therapy and the possible advantages of treating SAD in lowering the likelihood of developing other mental health problems in adolescence. It also emphasizes the value of continuous studies to comprehend these connections and enhance the effects on SAD sufferers' psychological well-being.

Identification of novel translocation between short arm of chromosome 4 and long arm of chromosome 6 in an infertile man using Interphase Chromosome Profiling (ICP).

Conventional cytogenetics has always been a favourite to detect chromosomal aberrations. Carriers of chromosomal translocation are often phenotypically normal but are infertile. Couples are often advised to go for karyotyping, but culture failure or improper metaphase spread with poor banding often makes the analysis difficult. We report here a novel translocation between short arm of chromosome 4 and long arm of chromosome 6 in an infertile man using an advanced molecular cytogenetic technique of Interphase Chromosome Profiling (ICP).

Epidemiological study of ocular trauma in an urban slum population in Delhi, India.

PURPOSE: To study the epidemiology and clinical profile of victims of ocular trauma in an urban slum population. MATERIALS AND METHODS: This cross-sectional study, conducted on 500 families each in three randomly selected urban slums in Delhi, collected demographic data for all members of these families, and clinical data for all those who suffered ocular trauma at any time, that required medical attention. Data was managed on SPSS 11.0. RESULTS: Of 6704 participants interviewed, 163 episodes of ocular trauma were reported by 158 participants (prevalence = 2.4%, confidence interval = 2.0 to 2.7) Mean age at trauma was 24.2 years. The association between the age of participants and the history of ocular trauma was significant ( P < 0.001), when adjusted for sex, education and occupation. Males were significantly more affected. Blunt trauma was the commonest mode of injury (41.7%). Blindness resulted in 11.4% of injured eyes ( P = 0.028). Of 6704 participants, 1567 (23.4%) were illiterate, and no association was seen between education status and trauma, when adjusted for sex and age at injury. A significant association was noted between ocular trauma and workplace (Chi-square = 43.80, P < 0.001), and between blindness and place (Chi-square = 9.98, P = 0.041) and source (Chi-square = 10.88, P = 0.028) of ocular trauma. No association was found between visual outcome and the time interval between trauma and first consultation (Chi-square = 0.50, P = 0.78), between receiving treatment and the best corrected visual acuity (Chi-square = 0.81, P = 0.81), and between the person consulted and blinding ocular trauma (Chi-square = 1.88, P = 0.170). CONCLUSION: A significant burden of ocular trauma in the community requires that its prevention and early management be a public health priority.

Genome structure in Streptomyces spp.: adjacent genes on the S. coelicolor A3(2) linkage map have cotransducible analogs in S. venezuelae.

Cotransduction analysis in Streptomyces venezuelae with the generalized transducing phage SV1 showed that several pairs of likely analogs of markers that are adjacent on the conjugational linkage map of Streptomyces coelicolor A3(2) were cotransducible and therefore physically close together. This supports the contention that taxonomically distinct "species" of Streptomyces are genetically closely related.

Application of the RB-FPG technique for distinguishing early and late replicating X chromosomes in farm animals.

The sex chromosomes of Murrah buffalo and Sahiwal cattle (females) were studied for R-banding patterns. A short term whole blood culture method was used for obtaining metaphase chromosomes. The R-banding method using 5-bromo-2'-deoxyuridine (BrdU), the fluorescent 33258 Hoechst stain followed by blue-black light exposure and Giemsa staining (RB-FPG) was applied to the chromosome preparations. The two X chromosomes in all the females were clearly distinguished. One of the chromosomes (early replicating) had alternative light and dark bands and the other X chromosome (late replicating) was either completely pale banded or had one or a few dark bands. The reason for this phenomenon could be BrdU incorporation in the late replicating X chromosome, which on exposure to blue light in the presence of 33258 Hoechst is destroyed and does not take the stain. Thus, one of the two X chromosomes shows differential staining behaviour.

Transductional analysis of chloramphenicol biosynthesis genes in Streptomyces venezuelae.

Auxotrophs isolated from two chloramphenicol-nonproducing mutants of Streptomyces venezuelae included three requiring pyridoxal (Pxl-), VS248 (cml-11 pdx-2), VS253 (cml-11 pdx-3), and VS258 (cml-12 pdx-4), and one requiring thiosulfate, VS263 (cml-12 cys-28). Results of SV1-mediated transductions were consistent with the relative marker order cys-28-cml-12-cml-11-pdx-2,3,4,5, all of which were cotransducible and must therefore span less than 45 kilobases of DNA, the approximate length of DNA packaged by SV1. cys-28 was also cotransducible with arg-4 and arg-6, but arg and pdx were not cotransducible. Results of crosses with donors carrying any one of 11 cml mutations were consistent with the location of all cml mutations between cys-28 and pdx markers. Also, a new Pxl- auxotroph (pdx-6) and two new Cml- mutants were recovered after localized hydroxylamine mutagenesis of a cys-28 cml+ strain derived from VS263 by transduction.

Conjugational fertility and location of chloramphenicol biosynthesis genes on the chromosomal linkage map of Streptomyces venezuelae.

In Streptomyces venezuelae fertility, defined as chromosomal gene recombination, was enhanced over 1000-fold when one parent in a biparental conjugational cross lacked the physically-undetected plasmid SVP1, as compared with crosses in which both parents carried SVP1. The existence of SVP1 and at least two other fertility plasmids, SVP2 and SVP3, was detected in S. venezuelae by 'lethal zygosis' elicited by a plasmid-plus mycelium in contact with a plasmid-minus mycelium. Conjugational crosses were used to construct a linkage map of S. venezuelae which was highly consistent with the map of analogous loci in S. coelicolor A3(2). A cluster of genes governing chloramphenicol biosynthesis was located near arg, cys and pdxB genes at a position roughly equivalent to the 1-2 o'clock region of the S. coelicolor A3(2) map.

Prenatal diagnosis of 22q11.2 deletion when ultrasound examination reveals a heart defect.

PURPOSE: The incidence of 22q11.2 deletion syndrome is approximately 1 in 5,000 births, and accounts for 5-30% of all heart defects, making it one of the more common genetic conditions in the population. METHODS: We employed fluorescence in situ hybridization (FISH) to study the incidence of 22q11.2 deletions in fetuses with cardiac anomalies detected on ultrasound examination. RESULTS: Of 64 cases, 18 had visible chromosome anomalies. FISH testing for 22q11.2 deletion was performed on the remaining 46 cases, and five exhibited a 22q11.2 deletion. Three of the five had de novo deletions, one was maternally inherited, and one family declined testing. CONCLUSION: FISH analysis for 22q11.2 deletion should be performed on all fetuses with cardiac defects (excluding hypoplastic left heart and echogenic focus) and a normal G-banded karyotype.