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Latest articles on Coronavirus - Ahead of Print.
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Table of Contents
January 2014
Volume 139 | Issue 1
Page Nos. 1-184
Online since Thursday, March 6, 2014
Accessed 58,875 times.
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EDITORIAL
Alzheimer's disease
prevention & acetyl salicylic acid: a believable story
p. 1
Massimiliano Pomponi, Massimo F.L Pomponi
PMID
:24604034
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COMMENTARIES
Approach to the diagnosis of developmental delay - The changing scenario
p. 4
Neerja Gupta, Madhulika Kabra
PMID
:24604035
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India can do more about intestinal worm infections
p. 7
Nilanthi de Silva
PMID
:24604036
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REVIEW ARTICLES
Role of gut pathogens in development of irritable bowel syndrome
p. 11
Madhusudan Grover
PMID
:24604037
Acute infectious gastroenteritis is one of the most commonly identifiable risk factors for the development of irritable bowel syndrome (IBS). A number of bacterial, viral and parasitic pathogens have been found to be associated with the development of IBS and other functional gastrointestinal (GI) disorders. Epidemiological studies have identified demographic and acute enteritis-related risk factors for the development of post-infectious-IBS (PI-IBS). Immune dysregulation, alterations in barrier function, serotonergic and mast cell activation have been identified as potential pathophysiological mechanisms. Additionally, variations in host genes involved in barrier function, antigen presentation and cytokine response have been associated with PI-IBS development. However, it is unknown whether specific pathogens have unique effects on long-term alterations in gut physiology or different pathogens converge to cause common alterations resulting in similar phenotype. The role of microbial virulence and pathogenicity factors in development of PI-IBS is also largely unknown. Additionally, alterations in host gut sensation, motility, secretion, and barrier function in PI-IBS need to be elucidated. Finally, both GI infections and antibiotics used to treat these infections can cause long-term alterations in host commensal microbiota. It is plausible that alteration in the commensal microbiome persists in a subset of patients predisposing them to develop PI-IBS.
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Probiotic foods: Can their increasing use in India ameliorate the burden of chronic lifestyle disorders?
p. 19
Neerja Hajela, G Balakrish Nair, BS Ramakrishna, NK Ganguly
PMID
:24604038
Probiotics are defined as live microorganisms which, when ingested in adequate amounts, confer health benefits on the host. Chronic diseases such as diabetes, non-alcoholic fatty liver disease, coronary artery disease, a variety of chronic inflammatory disorders with an immune basis, and some forms of cancer are increasing in incidence around the world and in India, and may be attributable in part to rapid changes in our lifestyle. There is considerable public interest in India in the consumption of probiotic foods. This brief review summarizes the background of the gut microbiota, the immunological reactions induced by these, the evidence linking the microbiota to health outcomes, and the evidence linking the use of probiotics for amelioration of chronic lifestyle diseases.
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Distribution of genetic polymorphisms of genes encoding drug metabolizing enzymes & drug transporters - a review with Indian perspective
p. 27
Gurusamy Umamaheswaran, Dhakchinamoorthi Krishna Kumar, Chandrasekaran Adithan
PMID
:24604039
Phase I and II drug metabolizing enzymes (DME) and drug transporters are involved in the absorption, distribution, metabolism as well as elimination of many therapeutic agents, toxins and various pollutants. Presence of genetic polymorphisms in genes encoding these proteins has been associated with marked inter-individual variability in their activity that could result in variation in drug response, toxicity as well as in disease predisposition. The emergent field pharmacogenetics and pharmacogenomics (PGx) is a promising discipline, as it predicts disease risk, selection of proper medication with regard to response and toxicity, and appropriate drug dosage guidance based on an individual's genetic make-up. Consequently, genetic variations are essential to understand the ethnic differences in disease occurrence, development, prognosis, therapeutic response and toxicity. For that reason, it is necessary to establish the normative frequency of these genes in a particular population before unraveling the genotype-phenotype associations. Although a fair amount of allele frequency data are available in Indian populations, the existing pharmacogenetic data have not been compiled into a database. This review was intended to compile the normative frequency distribution of the variants of genes encoding DMEs (CYP450s, TPMT, GSTs, COMT, SULT1A1, NAT2 and UGTs) and transporter proteins (MDR1, OCT1 and SLCO1B1) with Indian perspective.
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ORIGINAL ARTICLES
Clinical utility of multiplex ligation-dependent probe amplification technique in identification of aetiology of unexplained mental retardation: A study in 203 Indian patients
p. 66
Vijay R Boggula, Anju Shukla, Sumita Danda, Sankar V Hariharan, Sheela Nampoothiri, Rashmi Kumar, Shubha R Phadke
PMID
:24604040
Background & objectives:
Developmental delay (DD)/mental retardation also described as intellectual disability (ID), is seen in 1-3 per cent of general population. Diagnosis continues to be a challenge at clinical level. With the advancement of new molecular cytogenetic techniques such as cytogenetic microarray (CMA), multiplex ligation-dependent probe amplification (MLPA) techniques, many microdeletion/microduplication syndromes with DD/ID are now delineated. MLPA technique can probe 40-50 genomic regions in a single reaction and is being used for evaluation of cases with DD/ID. In this study we evaluated the clinical utility of MLPA techniques with different probe sets to identify the aetiology of unexplained mental retardation in patients with ID/DD.
Methods:
A total of 203 randomly selected DD/ID cases with/without malformations were studied. MLPA probe sets for subtelomeric regions (P070/P036) and common microdeletions/microduplications (P245-A2) and X-chromosome (P106) were used. Positive cases with MLPA technique were confirmed using either fluorescence
in situ
hybridization (FISH) or follow up confirmatory MLPA probe sets.
Results:
The overall detection rate was found to be 9.3 per cent (19 out of 203). The detection rates were 6.9 and 7.4 per cent for common microdeletion/microduplication and subtelomeric probe sets, respectively. No abnormality was detected with probe set for X-linked ID. The subtelomeric abnormalities detected included deletions of 1p36.33, 4p, 5p, 9p, 9q, 13q telomeric regions and duplication of 9pter. The deletions/duplications detected in non telomeric regions include regions for Prader Willi/Angelman regions, Williams syndrome, Smith Magenis syndrome and Velocardiofacial syndrome.
Interpretation & conclusions:
Our results show that the use of P245-A2 and P070/P036-E1 probes gives good diagnostic yield. Though MLPA cannot probe the whole genome like cytogenetic microarray, due to its ease and relative low cost it is an important technique for evaluation of cases with DD/ID.
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Prevalence & risk factors for soil transmitted helminth infection among school children in south India
p. 76
Deepthi Kattula, Rajiv Sarkar, Sitara Swarna Rao Ajjampur, Shantidani Minz, Bruno Levecke, Jayaprakash Muliyil, Gagandeep Kang
PMID
:24604041
Background & objectives:
Soil-transmitted helminths (STH) are a major public health problem in tropical and sub-tropical countries, affecting the physical growth and cognitive development in school-age children. This study was aimed to assess the prevalence and risk factors of STH infection among school children aged 6 -14 yr in Vellore and Thiruvanamalai districts in south India.
Methods:
Children aged 6-14 yr, going to government and government aided schools (n=33, randomly selected) in Vellore and Thiruvanamalai districts were screened to estimate the prevalence of STH, and a case control study was done on a subset to assess the risk factors for the infection.
Results:
The prevalence of STH was 7.8 per cent, varying widely in schools from 0 to 20.4 per cent, in 3706 screened children. Hookworm (8.4%) rates were high in rural areas, while
Ascaris
(3.3%) and
Trichuris
(2.2%) were more prevalent among urban children. Consumption of deworming tablets (OR=0.25,
P < 0
.01) offered protection, while residing in a field hut (OR=6.73,
P
=0.02) and unhygienic practices like open air defaecation (OR=5.37,
P < 0
.01), keeping untrimmed nails (OR=2.53,
P
=0.01) or eating food fallen on the ground (OR=2.52,
P
=0.01) were important risk factors for STH infection.
Interpretation & conclusions:
Our study indicated that school children with specific risk factors in the studied area were vulnerable subpopulation with elevated risk of STH infection. Identifying risk factors and dynamics of transmission in vulnerable groups can help to plan for effective prevention strategies.
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Association between obstetric complications & previous pregnancy outcomes with current pregnancy outcomes in Uttar Pradesh, India
p. 83
Deepti Singh, Srinivas Goli, Sulabha Parsuraman
PMID
:24604042
Background & objectives:
A substantial proportion of pregnant women in India are at the risk of serious obstetric complications and reliable information on obstetric morbidity is scanty, particularly in socio-economically disadvantaged society. We studied the association between the obstetric complications in women in their current pregnancy and adverse pregnancy outcomes in previous pregnancies in Uttar Pradesh, India.
Methods:
Data from District Level Household Survey (2007-2008) were used for empirical assessment. Bivariate, trivariate and Cox proportional hazard regression model analyses were applied to examine the effect of obstetric complications and previous pregnancy outcome on current pregnancy outcome among currently married women (age group 15-49 yr) in Uttar Pradesh, India.
Results:
The results of this study showed that the obstetric complications in the current pregnancy and adverse pregnancy outcomes in previous pregnancies were associated with the outcome of the current pregnancy. Cox proportional hazard regression model estimates revealed that the hazard ratio of having stillbirths were significantly higher among women with any obstetric complications compared to women with no obstetric complications. The adverse pregnancy outcome in a previous pregnancy was the largest risk factor for likelihood of developing similar type of adverse pregnancy outcome in the current pregnancy.
Interpretation & conclusions:
The findings provided key insights for health policy interventions in terms of prevention of obstetric complications to avoid the adverse pregnancy outcome in women.
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Endophthalmitis patients seen in a tertiary eye care centre in Odisha: A clinico-microbiological analysis
p. 91
Savitri Sharma, Tapas R Padhi, Soumyava Basu, Sarita Kar, Arvind Roy, Taraprasad Das
PMID
:24604043
Background & objectives:
Geographical variations are known to influence different aspects of endophthalmitis. We report the epidemiological, clinical and microbiological profile of patients with infectious endophthalmitis presented to a tertiary eye care centre in Odisha, India, and compare the results with published reports from other parts of India.
Methods:
Retrospective review of medical records of 107 patients, seen between December 2006 and January 2009 was done. All patients had undergone parsplana vitrectomy with intraocular antibiotics and the management was based on microbiological analysis of the vitreous fluid.
Results:
Forty six (43.0%) patients had post-operative (PO), 43 had post-traumatic (PT) and 18 (16.8%) had endogenous (EG) endophthalmitis. Males were predominant in all three types of endophthalmitis. Significantly younger individuals constituted PT group. While culture established microbial diagnosis in 45 patients (42%), direct microscopy was positive in 38 patients (35.5%). Fungal aetiology was found in 13 patients (PO-7, PT-4, EG-2) and bacteria accounted for 32. Similar to studies from north, central and south India, fungi and Gram-negative bacteria accounted for a large number of PO endophthalmitis cases. Two PT patients had polymicrobial infection. All Gram-positive bacteria were susceptible to vancomycin. Susceptibility to ceftazidime was variable among the Gram-negative bacteria. Best corrected visual acuity (BCVA) at presentation was less than 20/200 in majority (93%) of the patients. While the treatment outcome was variable in fungal and sterile endophthalmitis, the BCVA was either unchanged or improved in 100 per cent of bacterial endophthalmitis patients.
Interpretation & conclusions:
The spectrum of infection and outcome of infectious endophthalmitis in Odisha was similar to other parts of the country. Fungi and bacteria were involved in all three types of endophthalmitis. Empirical use of standard intravitreal therapy is recommended while emphasizing on vitreous biopsy for culture and sensitivity whenever possible.
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Prevalence of Graves' ophthalmopathy in patients with Graves' disease presenting to a referral centre in north India
p. 99
Sagili Vijaya Bhaskar Reddy, Anu Jain, Subhash B Yadav, Kumudini Sharma, Eesh Bhatia
PMID
:24604044
Background & objectives:
The prevalence of Graves' ophthalmopathy (GO) varies widely in different ethnic groups. Indians have been reported to have a lower prevalence of Graves' ophthalmopathy as compared to Caucasians of European origin, but data are sparse and inconclusive. We studied the prevalence, clinical features and association of GO in Indian patients with Graves' disease attending a referral centre in north India.
Methods:
A prospective study was conducted on 235 consecutive newly referred north Indian patients with Graves' disease presenting to a tertiary care centre in north India. All patients underwent a comprehensive ophthalmological examination as per the European Group on Graves' Orbitopathy (EUGOGO) recommendations.
Results:
GO was diagnosed in 65 patients (prevalence 28%; 95% confidence interval 22-33%). The prevalence was similar in males (28%) and females (27%). It was mild in 83 per cent, moderate-severe in 15 per cent and sight-threatening in only 2 per cent of cases. Ophthalmopathy was clinically active in only two (3%) cases. Upper eyelid retraction was the most common manifestation (83%), followed by exophthalmos (75%). Extra-ocular muscle involvement (5%) and optic nerve dysfunction (2%) were uncommon. The risk of GO was 3.9- fold (95% confidence interval 1.1-13.6) higher in smokers compared to non-smokers. However, severity of disease in smokers was similar to non-smokers. On multivariate logistic regression analysis, GO was associated only with high thyrotropin receptor antibody titres and current smoking.
Interpretation & conclusions:
Among north Indian patients with GD studied at a referral center, the prevalence of GO was similar to Caucasians of European descent, but clinically active and severe ophthalmopathy was uncommon. More studies are needed to confirm these findings.
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Molecular genotyping of ABO blood groups in some population groups from India
p. 105
Sabita Ray, Ajit C Gorakshakar, K Vasantha, Anita Nadkarni, Yazdi Italia, Kanjaksha Ghosh
PMID
:24604045
Background & objectives:
Indian population is characterized by the presence of various castes and tribal groups. Various genetic polymorphisms have been used to differentiate among these groups. Amongst these, the ABO blood group system has been extensively studied. There is no information on molecular genotyping of ABO blood groups from India. Therefore, the main objective of this study was to characterize the common A, B and O alleles by molecular analysis in some Indian population groups.
Methods:
One hundred samples from the mixed population from Mumbai, 101 samples from the
Dhodia
tribe and 100 samples from the
Parsi
community were included in this study. Initially, the samples were phenotyped by standard serologic techniques. PCR followed by single strand conformational polymorphsim (SSCP) was used for molecular ABO genotyping. Samples showing atypical SSCP patterns were further analysed by DNA sequencing to characterize rare alleles.
Results:
Seven common ABO alleles with 19 different genotypes were found in the mixed population. The
Dhodias
showed 12 different
ABO
genotypes and the
Parsis
revealed 15 different
ABO
genotypes with six common ABO alleles identified in each of them. Two rare alleles were also identified.
Interpretation & conclusions:
This study reports the distribution of molecular genotypes of ABO alleles among some population groups from India. Considering the extremely heterogeneous nature of the Indian population, in terms of various genotype markers like blood groups, red cell enzymes,
etc.
, many more ABO alleles are likely to be encountered.
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Efficacy & safety of continuous erythropoietin receptor activator (CERA) in treating renal anaemia in diabetic patients with chronic kidney disease not on dialysis
p. 112
Sameer G Vankar, Pinaki Dutta, HS Kohli, Anil Bhansali
PMID
:24604046
Background & objectives:
Chronic kidney disease (CKD) patients on dialysis regularly receive erythropoiesis stimulating agent (ESA) for treating renal anaemia during their dialysis unlike those who are not on dialysis. In such patients, the longer acting ESA can be helpful in reducing their frequent visits to the health care facilities and improving their compliance. This study was aimed to examine the efficacy and safety of continuous erythropoietin receptor activator (CERA), a long acting ESA in treating renal anaemia in patients with diabetic CKD not on dialysis.
Methods:
In this prospective, open-labelled, pilot clinical study, 35 adult type 2 diabetes patients with nephropathy and renal anaemia, who were not on dialysis nor receiving treatment with ESA were administered CERA subcutaneously once in two weeks for a period of 24 weeks. The primary efficacy end point was to evaluate the Hb response (Hb rise of ≥1 g/dl above the baseline or Hb level ≥11 g/dl) during the study period.
Results:
All patients showed Hb rise ≥1 g/dl during the study period and 80 per cent patients could achieve Hb value ≥11 g/dl. The maximum median Hb rise of 1.2 g/dl occurred in the initial 6 weeks after starting the treatment. The mean creatinine clearance (CrCl) improved by 2.8 ml/min, with mean Hb rise of 2.6 g/dl from the baseline after administration of CERA. Worsening of blood pressure (BP) control (42.9%) was the most common adverse event.
Interpretation & conclusions:
CERA once in two weeks was found to be efficacious in correcting anaemia in the ESA-naïve patients with diabetic nephropathy who are not on dialysis. However, regular monitoring of blood pressure is required while on treatment with CERA.
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Validity of SW982 synovial cell line for studying the drugs against rheumatoid arthritis in fluvastatin-induced apoptosis signaling model
p. 117
Jae-Ho Chang, Kyu-Jae Lee, Soo-Ki Kim, Dae-Hyun Yoo, Tae-Young Kang
PMID
:24604047
Background & objectives:
To study effects of drugs against rheumatoid arthritis (RA) synoviocytes or fibroblast like synoviocytes (FLS) are used. To overcome the drawbacks of using FLS, this study was conducted to show the validity of SW982 synovial cell line in RA study.
Methods:
3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, Annexin V propidium iodide (PI) staining, mitochondrial membrane potential assay, Triton X-114 Phase partitioning, and immunolot for apoptosis signaling in SW982 human synovial cell line were performed.
Results:
Fluvastatin induced apoptosis in a dose- and time-dependent manner in TNFα -stimulated SW982 human synovial cells. A geranylgeranylpyrophosphate (GGPP) inhibitor, but not a farnesylpyrophosphate (FPP) inhibitor, induced apoptosis, and fluvastatin-induced apoptosis was associated with the translocation of isoprenylated RhoA and Rac1 proteins from the cell membrane to the cytosol. Fluvastatin-induced downstream apoptotic signals were associated with inhibition of the phosphoinositide 3-kinase (PI3K)/Akt pathway. Accordingly, 89 kDa apoptotic cleavage fragment of poly (ADP-ribose) polymerase (PARP) was detected.
Interpretation & conclusions:
Collectively, our data indicate that fluvastatin induces apoptotic cell death in TNFα-stimulated SW982 human synovial cells through the inactivation of the geranylgerenylated membrane fraction of RhoA and Rac1 proteins and the subsequent inhibition of the PI3K/Akt signaling pathway. This finding shows the validity of SW982 cell line for RA study.
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Expressional regulation of genes linked to immunity & programmed development in human early placental villi
p. 125
MA Khan, S Manna, N Malhotra, J Sengupta, D Ghosh
PMID
:24604048
Background & objectives:
During 6 to 8 wk of gestation, human placental villi show a complex pattern of morphogenesis. There is however, no large scale gene expression study exploring the temporal pattern of the developmental molecular networks in placental villi during the early weeks of gestation. We evaluated the transcriptome profiling of humn placental villus samples obtained from fertile women with voluntarily terminated normal pregnancies between 6-8 wk of gestation.
Methods:
Transcriptomic profiles of individual human placental villous samples from 25 women with normal pregnancies during 6 to 8 wk of gestation were examined using human whole genome expression arrays. Quantitative RT-PCR validation of copy numbers of transcripts for selected 15 genes and exploratory analysis of the microarray data revealed a high degree of quality assurance supportive of further clustering and differential analyses. Immunoblot and immunohistochemical analysis of selected five candidate proteins (CAGE1, CD9, SLC6A2, TANK and VEGFC) based on transcript profiles were done to assess the pattern of down stream informational flow.
Results:
A large number (~9K) of genes with known functions were expressed in the experimental samples. The clustering analysis identified three major expression clusters with gestational age, and four co-expressional clusters. Differential analysis identified a highly discrete regulatory process involving only about 160 genes. Immunochemical analysis of selected candidate proteins based on transcript profiles revealed generally synchronous expression in human early placental villi.
Interpretation & conclusions:
Several signaling pathways linked to immunity (
COL1
,
JAK2
,
JAK3
,
IL12
,
IL13
,
IL15
,
IL27
,
STAT3
and
STAT5
) were downregulated, while genes of the enriched category of antiviral immunity (
ATF/AP1
,
IL10R
and
OAS
) were clearly over-expressed. Transcriptional integration supportive of programmed development was observed in first trimester placental villi and it included regulation of apoptosis and cell cycle progression (
ARRB1, ATR, BLM, CHRNA7, CHRNB1, FYN, KPNA4,
and
MTOR/FRAP
), autophagy (
ATG4B, ATG14, BAD,
and
BCL2
), cell adhesion (
CD9
and
FN1
) and epithelial-to-mesenchymal transition (
CALD1, FN1, HEY1, MMP2,
and
WNT3A
).
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Bio-medical waste management: situational analysis & predictors of performances in 25 districts across 20 Indian States
p. 141
INCLEN Program Evaluation Network (IPEN) study group, New Delhi, India
PMID
:24604049
Background & objectives:
A legislative framework for bio-medical waste management (BMWM) was established in the country more than a decade ago. Though some studies have identified gaps at local levels, no systematic effort was done to collect data from different parts of the country. The objective of this nationwide study was to document existing resources, infrastructure and practices related to BMWM across the study districts.
Methods:
The study was conducted in 25 districts spread over 20 States of India including urban and rural areas. Primary (n=388), secondary (n=25) and tertiary care (n=24) health facilities from public (n=238) and private (n=199) sector were assessed and scored for the state of BMWM through 9 items representing system capacity, availability of resources and processes in place. Health facilities were assigned into one of the three categories (Red, Yellow and Green) based on the cumulative median scores.
Results:
Around 82 per cent of primary, 60 per cent of secondary and 54 per cent of tertiary care health facilities were in the 'RED' category. Multivariate analysis indicated that charts at the point of waste generation, availability of designated person, appropriate containers and bags, availability of functional needle destroyers, availability of personal protective gears, segregation of waste at point of generation and log book maintenance were independently (OR-between 1.2-1.55;
P <
0.03 or less) associated with better BMWM system in the health facilities. This was true for both rural-urban and public or private health facilities.
Interpretation & conclusions:
The study highlighted the urgent need for greater commitments at policy and programme levels for capacity building, and resource investments in BMWM.
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Clinical profile & predictors of poor outcome of adult HIV-tuberculosis patients in a tertiary care centre in north India
p. 154
Surendra K Sharma, Manish Soneja, KT Prasad, Sanjay Ranjan
PMID
:24604050
Background & objectives:
There is a paucity of data from India on response to treatment of tuberculosis (TB) in patients with human immunodeficiency virus (HIV)-TB co-infection. This study was done to assess the frequency and pattern of TB, outcome of anti-tuberculosis treatment, and the factors related to poor outcome of TB treatment in adult patients with HIV infection.
Methods:
Retrospective review of case records of HIV-TB co-infected patients attending the antiretroviral therapy (ART) clinic in a tertiary care centre in north India was done.
Results:
Of the 1754 patients included in the study, 583 (33.2%) were diagnosed with active TB and 466 (79.9%) of them had CD4 count less than 200/΅l at diagnosis. Extrapulmonary TB was diagnosed in 372 (63.8%) patients [76 (20.4%) had disseminated TB], and pulmonary TB in 211 (36.2%) patients. "Favourable outcome" (cure and completed treatment) was observed in 332 (77%) patients. Unfavourable outcome included default (8.1%), treatment failure (1.6%), and death (13.2%). At 1-year post-treatment follow up, 12 (3.6%) patients had disease relapse. CD4 count of less than 200/ ΅l at diagnosis [OR-2.32, CI (1.06-5.09)], and retreatment cases [OR-2.91, CI (1.22-6.89)] were independent predictors of unfavourable outcome.
Interpretation & conclusions:
There is an urgent need to strengthen the information, education, communication activities and expand the ART services to meet the requirement of early testing and treatment initiation in patients co-infected with HIV-TB. The findings highlight the need for performing drug susceptibility testing (DST) for patients starting retreatment regimen to improve treatment outcome.
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Polymerase chain reaction targeting insertion sequence for the diagnosis of extrapulmonary tuberculosis
p. 161
V Makeshkumar, Radha Madhavan, Sujatha Narayanan
PMID
:24604051
Background & objectives:
Diagnosis of extrapulmonary tuberculosis (EPTB) is difficult using conventional diagnostic methods. This study was conducted to evaluate the use of polymerase chain reaction (PCR) in diagnosis of definitive and probable extrapulmonary tuberculosis patients, and to assess the performance of insertion sequence (IS) 6110 based PCR assay as compared to conventional culture by Lowenstein-Jensen (LJ) method for the diagnosis of EPTB.
Methods:
A total of 178 non repeated clinical specimens were collected from clinically suspected extrapulmonary tuberculosis patients. The specimens included 59 ascitic fluid, 54 pleural fluid, 25 cerebrospinal fluid (CSF), 12 fine needle aspiration (FNA), 8 urine, 7 pus, 6 synovial fluid, 2 skin tissue, one pericardial fluid, one liver abscess, one pancreatic cyst fluid, one omental biopsy and one semen sample. All these clinical samples were subjected to Ziehl-Neelsen staining (ZN) for acid fast bacilli (AFB) and culture on LJ medium. PCR was performed by targeting 123bp fragment of insertion sequence IS6110 of
Mycobacterium tuberculosis
(MTB).
Results:
Of the 178 specimens, 10 (5.61%) were ZN smear positive for AFB, six (3.37%) were L-J culture positive from 10 AFB smear positive cases and 48 (26.96%) were PCR IS 6110 positive for
M. tuberculosis
.
Interpretation & conclusions:
PCR using IS6110 primer was able to pick up more EPTB patients compared to conventional L-J culture method for detection of
M. tuberculosis.
False positive PCR IS6110 in three CSF samples may be due to latent TB infection which was limitation in this study.
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Survival of diurnally sub periodic
Wuchereria bancrofti
in
Downsiomyia nivea
(Diptera: Culicidae): a density dependent factor from Andaman & Nicobar Islands
p. 167
AN Shriram, K Krishnamoorthy, P Vanamail
PMID
:24604052
Background & objectives:
In India, diurnally sub periodic
Wuchereria bancrofti
transmitted by
Downsiomyia nivea
is prevalent only in the Nicobar district of Andaman and Nicobar Islands. The ongoing LF elimination programme aims at transmission interruption by bringing down the microfilarie (mf) load in the community, which has implication on the parasite load in mosquito vector. Therefore, understanding density dependent constraints on transmission assumes significance from control perspective. The present study was undertaken in Teressa Island to understand the density dependent parasite mortality and survival probability of the parasite
Do. nivea
.
Methods:
The entomological data collected from Teressa Island, endemic for the diurnally sub periodic form of
W.
bancrofti
were used to examine the parasite loss and its survival up to infectivity. Patterns of parasite distribution in
Do. nivea
were examined.
Results:
Distribution patterns of microfilariae were found to be over dispersed in
Do. nivea
. The later stages of the parasite in the vector were randomly distributed. Distribution pattern of various filarial larval stages suggested that the loss of parasites occurred as development progressed and was maximal between the first and second stages. Further, both the prevalence of infection and the degree of parasite aggregation in the vector population have fallen significantly with development of parasite stage.
Interpretation & conclusions:
Results indicate the operation of parasite density dependent mortality of vectors or parasite loss or combination of both. The present study with
Aedes
transmitted filariasis conducted before launching LF elimination programme in the study area indicates a comparable level of parasite regulation in the vector which has similar implications on the transmission threshold. Thus, the consideration of
Aedes
with
Culex
in deriving the critical level of antigen positive for making decisions on cessation of mass drug administration (MDA) can be justified. However, with MDA aiming at reducing parasite load in the community, the operation of density dependent factor in the transmission becomes less pronounced in the subsequent rounds of MDA.
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STUDENT IJMR
Assessment of stress & related albuminuria in caregivers of severe mentally ill persons
p. 174
Anirban Dalui, Prathama Guha, Angshuman De, Sandip Chakraborty, Indranil Chakraborty
PMID
:24604053
Background & objectives:
The family caregivers of patients with chronic diseases are known to undergo psychiatric stress leading to oxidative damage to glomerular membrane of kidney resulting in proteinuria. This study was aimed to compare current anxiety, depression levels and urinary albumin:creatinine ratio between primary caregivers of chronic mental patients and matched controls, and also whether the urinary albumin : creatinine ratio is correlated with stress factors (state and trait anxiety level, depression and caregiver burden) amongst caregivers.
Methods:
The present cross-sectional study included 131 subjects (93 primary caregivers of patients with major mental illness as cases and 38 normal controls). They completed the Burden Assessment Schedule of SCARF, State Trait Anxiety Inventory and Beck's Depression Inventory. A spot urine sample was tested for urinary albumin : creatinine ratio from all study subjects.
Results:
Mean values of current State and Trait anxiety, depression, urinary albumin:creatinine ratio were significantly higher in caregivers than controls (
P <
0.001). Urinary albumin : creatinine ratio was significantly correlated (
P <
0.001) with State and Trait anxiety level, depression as well as caregiver burden.
Interpretation & conclusions:
The study demonstrated depression , anxiety and albuminuria amongst primary caregivers of patients with mental illness. Increase in the caregivers' burden, depression and anxiety resulted in an increase in the urinary albumin: creatinine ratio. This indicates that psychological stress is one of the determinants of albumin excretion rate in otherwise healthy subjects.
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CORRESPONDENCES
The relationship between the use of fluconazole & the incidence of fluconazole-resistant
Candida
species
p. 178
Chia-Chang Kuo, Chien-Ming Chao
PMID
:24604054
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Authors' response
p. 178
JK Oberoi, C Wattal, N Goel, R Raveendran, S Datta, K Prasad
PMID
:24741758
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CLINICAL IMAGES
Stewart-Treves syndrome
p. 179
Marek Stanczyk, Magdalena Gewartowska
PMID
:24604055
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A case of pycnodysostosis presented with pathological femoral shaft fracture
p. 180
Shailendra Singh, Balaji Sambandam
PMID
:24604056
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BOOK REVIEWS
The evolving threat of antimicrobial resistance: Options for action
p. 182
Arti Kapi
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WHO qualityRights tool kit: Assessing and improving quality and human rights in mental health and social care facilities
p. 183
Debasish Basu
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BOOKS RECEIVED
Book Received
p. 184
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© Indian Journal of Medical Research | Published by Wolters Kluwer -
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Online since 25 February, 2011