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January-April 2011
Volume 17 | Issue 1
Page Nos. 1-36
Online since Saturday, June 18, 2011
Accessed 22,428 times.
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EDITORIAL
Quantitation of HBV DNA; another modification of the test: Will it withstand the test of time?
p. 1
Kanjaksha Ghosh, Ajit Gorakshakar
DOI
:10.4103/0971-6866.82184
PMID
:21814334
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REVIEW ARTICLE
Proteomics in obstetrics and gynecology
p. 3
Seema Lekhwani, Vijay Shankar, ND Vaswani
DOI
:10.4103/0971-6866.82185
PMID
:21814335
Proteomics helps to understand the basic biological processes critical to normal cellular functions as well as the development of diseases. It identifies the essential components of these processes and exploits these components as targets in the development of new methods to prevent or treat diseases. Proteomics, although in an infancy stage in India, has the potential to complement and further enlarge the wealth of information in medicine, especially in the field of cancer. This article reviews the recent progress in proteomic techniques and their applications in the field of obstetrics and gynecology.
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ORIGINAL ARTICLES
Evaluation of smoking genotoxicity in Turkish young adults
p. 7
Ayse G Zamani, H Gul Durakbasi-Dursun, Sennur Demirel, Aynur Acar
DOI
:10.4103/0971-6866.82186
PMID
:21814336
Background:
For the past few decades, it has been widely known in developed countries that tobacco is dangerous, but it is still insufficiently realized how big these dangers really are.
Aims:
To determine and evaluate micronuclei (MN) frequencies of young smokers and nonsmokers in three different tissues (peripheric blood lymphoctes, buccal mucosa, and exfoliative urothelial cells) at the same time.
Materials and Methods:
MN assay was performed on buccal mucosa, urothelial cells, and peripheric blood lymphocyte samples obtained from 15 healthy male smokers (>5 pack-years) and 15 healthy male nonsmoker controls who had not been exposed to any known genotoxic agent.
Statistical Analysis Used:
The statistical differences between smoker and nonsmoker groups were calculated by using student t test. The differences between smoker-group tissues were compared by ANOVA.
Results:
It was found that MN frequency (mean value ± standard deviation) in oral mucosa cells from smokers and controls were 1.20 ± 0.22% and 0.26 ± 0.10%; in urothelial exfoliative cells, 1.29 ± 0.28% and 0.12 ± 0.08%; in peripheric blood lymphocytes, 1.53 ± 0.23% and 0.38 ± 0.12%, respectively. The mean MN frequencies in buccal mucosa, urothelial exfoliative cells, and peripheric blood lymphocytes were significantly higher in smokers than in those of controls (
P
<0.05). All tissues were affected from smoking, but the most destructive effect was seen in urothelial cells of smokers (
P
<0.05).
Conclusions:
Our data showed that cigarette smoke is a DNA damage causitive agent on exfoliative buccal mucosa and urothelial cells and peripheric blood lymphocytes of young smokers, but it has most destructive effect on urothelial cells.
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Genetic markers for idiopathic scoliosis on chromosome 19p 13.3 among Saudi Arabian girls: A pilot study
p. 13
Mir Sadat-Ali, Abdallah S Al-Omran, Abdallah A Al-Othman
DOI
:10.4103/0971-6866.82187
PMID
:21814337
Background and Objective
: Genetic locus linked to chromosome 19p for Adolescent idiopathic scoliosis (AIS) has been described. This study was carried out with the aim to find any significant linkage or association between three microsatellite markers (D19S216, D19S894, and DS1034) of chromosome 19p13.3 in Saudi Arabian girls with AIS.
Materials and Methods
: In eleven unrelated Saudi Arabian girls who were treated for AIS with Cobb angle of ≥30 degrees and in 10 unrelated healthy individuals, linkage analysis was performed using parametric and nonparametric methods by use of GENEHUNTER version 2.1. Multipoint linkage analysis was used in specifying an autosomal dominant trait with a gene frequency of 0.01 and an estimated penetrance of 80% at the genotype and the allele level. Fisher's exact test was used in the analysis of contingency tables for the D19S216, D19S894, and DS1034 markers.
Results
: The analysis between the patient group and healthy girls showed that at genotypic level there was no significant association of the markers and scoliosis D19S216 (
P
= 0.21), D19S894 (
P
= 0.37), and DS1034 (
P
= 0.25). Whereas, at the allele level, there was statistically significant association between the marker DS1034 (
P
= 0.008) and no significant association with the other two markers D19S216 (
P
= 0.25) and D19S894 (
P
= 0.17).
Conclusions
: Our study shows that at genotypic level none of the markers reported earlier were associated with scoliosis but at allele level, marker DS1034 was significantly associated with patients with AIS. This allele marker on chromosome 19p appears important in the etiology of AIS.
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A latest and promising approach for prediction of viral load in hepatitis B virus infected patients
p. 17
Naresh Yalamanchili, Rahamathullah Syed, Madhavi Chandra, Vishnupriya Satti, Ramachandra Rao, Aejaz Habeeb Mohammed, Khaja Mohammed Nanne
DOI
:10.4103/0971-6866.83170
PMID
:21814338
Introduction:
Designing a rapid, reliable and sensitive assay for detection of hepatitis B virus (HBV) variants by real-time PCR is challenging at best. A recent approach for quantifying the viral load using a sensitive fluorescent principle was brushed in this study.
Materials and Methods
: A total of 250 samples were collected from the outpatient unit, CLRD. Complete Human HBVDNA sequences (
n
= 944) were selected from the National Centre for Biotechnology Information (NCBI), primers and probes were designed and synthesized from the core, surface, and x region. Real-time based quantification was carried out using a standard kit and in-house generated standards and RT-PCR protocols.
Results and Discussion:
The standard calibration curve was generated by using serial dilution 10
2
to 10
8
. The calibration curve was linear in a range from 10
2
to 10
8
copies/ml, with an
R
2
value of 0.999. Reproducibility as measured by dual testing of triplicates of serum samples was acceptable, with coefficients of variation at 6.5%, 7.5%, and 10.5%. Our results showed that amplification performance was good in the case of the x-region-based design (98%). Out of 100 negative samples screened by enzyme linked immunosorbent assay and the standard RT-PCR kit, one sample was detected as positive with the in-house developed RT-PCR assay, the positivity of the sample was confirmed by sequencing the amplified product, NCBI accession EU684022.
Conclusion:
This assay is reproducible showing limited inter- and intra-assay variability. We demonstrate that the results of our assay correlated well with the standard kit for the HBV viral load monitor.
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CASE REPORTS
Escobar syndrome in three male patients of same family
p. 22
Deepak S Amalnath, D.K.S Subrahmanyam, S Sridhar, TK Dutta
DOI
:10.4103/0971-6866.82188
PMID
:21814339
We describe three male individuals from a consanguineous south Indian family affected with the multiple pterygium syndrome (Escobar syndrome). Common clinical features included short stature, multiple pterygium, skeletal anomalies, and normal intelligence. The first report of this condition was made in 1902 from this same place (Pondicherry) and the disease received its present popular name Escobar syndrome in 1982. The genetic defect for this condition was identified in 2006 as mutation in the fetal acetylcholine receptor.
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Familial clustering of a rare syndrome
p. 26
Jayashree Nadkarni, Hari Ganesh, Rashmi Dwivedi
DOI
:10.4103/0971-6866.82189
PMID
:21814340
Ectrodactyly, ectodermal dysplasia and cleft palate syndrome is a rare autosomal dominant multiple congenital anomaly syndrome with variable expressivity and reduced penetration. The cardinal features are cleft palate/lip, lobster hand deformity, sparse hypopigmented hair, dry scaly skin, and lacrimal and urogenital anomalies. A neonate presented to us with typical features, his mother and other two siblings were also affected.
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MCT oil-based diet reverses hypertrophic cardiomyopathy in a patient with very long chain acyl-coA dehydrogenase deficiency
p. 29
Muhammad Ali Pervaiz, Fran Kendal, Madhuri Hegde, Rani H Singh
DOI
:10.4103/0971-6866.82190
PMID
:21814341
Very long chain acyl-CoA dehydrogenase (VLCAD) deficiency is one of the genetic defects of mitochondrial fatty acid beta-oxidation presenting in early infancy or childhood. If undiagnosed and untreated, VLCAD deficiency may be fatal, secondary to cardiac involvement. We assessed the effect of replacing part of the fat in the diet of a 2 -month-old male infant, who was diagnosed with VLCAD deficiency,with medium-chain triglyceride (MCT) oil and essential fats. The patient presented with vomiting, dehydration, and was found to have persistent elevation of liver function tests, hepatomegaly, pericardial and pleural effusion, right bundle branch block, and biventricular hypertrophy. Because of the cardiomyopathy, hepatomegaly, and an abnormal acylcarnitine profile and urine organic acids, he was suspected of having VLCAD deficiency. This was confirmed on acyl-coA dehydrogenase, very long chain (ACADVL) gene analysis. He was begun on an MCT oil-based formula with added essential fatty acids, uncooked cornstarch (around 1 year of age), and frequent feeds. By 7 months of age, cardiomyopathy had reversed and by 18 months of age, all cardiac medications were discontinued and hypotonia had improved such that physical therapy was no longer required. At 5 years of age, he is at the 50
th
percentile for height and weight along with normal development. Pediatricians need to be aware about the basic pathophysiology of the disease and the rationale behind its treatment as more patients are being diagnosed because of expansion of newborn screen. The use of MCT oil as a medical intervention for treatment of VLCAD deficiency remains controversial mostly because of lack of clear phenotype-genotype correlations, secondary to the genetic heterogeneity of the mutations. Our case demonstrated the medical necessity of MCT oil-based nutritional intervention and the need for the further research for the development of specific guidelines to improve the care of these patients.
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IMAGES
A case of short stature with anterior vertebral beaking
p. 33
Ketan Prasad Kulkarni, Inusha Panigrahi
DOI
:10.4103/0971-6866.82191
PMID
:21814342
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LETTER TO THE EDITOR
Third national science symposium on HIV/AIDS: HIV Science 2010
p. 35
Aruna Shankarkumar, U Shankarkumar
DOI
:10.4103/0971-6866.82192
PMID
:21814343
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© 2006 - Indian Journal of Human Genetics | Published by Wolters Kluwer -
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