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EDITORIAL |
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Juvenile diabetes |
p. 179 |
Sunanda R Babu, George S Eisenbarth PMID:22960882 |
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COMMENTARY |
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Information, education & communication: Corner stone for preventing cancer of the cervix |
p. 182 |
Martha Jacob PMID:22960883 |
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CENTENARY REVIEW ARTICLE |
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The challenge of health & environment: Profiling risks & strategic priorities for now & the future |
p. 185 |
Jai P Narain PMID:22960884A substantial burden of communicable and non-communicable diseases in the developing countries is attributable to environmental risk factors. WHO estimates that the environmental factors are responsible for an estimated 24 per cent of the global burden of disease in terms of healthy life years lost and 23 per cent of all deaths; children being the worst sufferers. Given that the environment is linked with most of the Millennium Development Goals (MDGs), without proper attention to the environmental risk factors and their management, it will be difficult to achieve many MDGs by 2015. The impact of environmental degradation on health may continue well into the future and the situation in fact, is likely to get worse. In order to address this challenge, two facts are worth noting. First, that much of the environmental disease burden is attributable to a few critical risk factors which include unsafe water and sanitation, exposure to indoor smoke from cooking fuel, outdoor air pollution, exposure to chemicals such as arsenic, and climate change. Second, that environment and health aspects must become, as a matter of urgency, a national priority, both in terms of policy and resources allocation. To meet the challenge of health and environment now and in the future, the following strategic approaches must be considered which include conducting environmental and health impact assessments; strengthening national environmental health policy and infrastructure; fostering inter-sectoral co-ordination and partnerships; mobilizing public participation; and enhancing the leadership role of health in advocacy, stewardship and capacity building. |
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REVIEW ARTICLE |
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Paragonimus & paragonimiasis in India  |
p. 192 |
T Shantikumar Singh, Hiromu Sugiyama, Achariya Rangsiruji PMID:22960885Ever since the discovery of the first indigenous case in 1981, paragonimiasis has gained recognition as a significant food borne parasitic zoonosis in India. The data available on the occurrence of paragonimiasis, until today, may be just the tip of an iceberg as the study areas covered were restricted to Northeast Indian States. Nevertheless, the results of research on paragonimiasis in India have revealed valuable information in epidemiology, life cycle, pathobiology and speciation of Indian Paragonimus. Potamiscus manipurensis, Alcomon superciliosum and Maydelliathelphusa lugubris were identified as the crab hosts of Paragonimus. Paragonimus miyazakii manipurinus n. sub sp., P. hueit'ungensis, P. skrjabini, P. heterotremus, P. compactus, and P. westermani have been described from India. P. heterotremus was found as the causative agent of human paragonimiasis. Ingestion of undercooked crabs and raw crab extract was the major mode of infection. Pulmonary paragonimiasis was the commonest clinical manifestation while pleural effusion and subcutaneous nodules were the common extra-pulmonary forms. Clinico-radiological features of pulmonary paragonimiasis simulated pulmonary tuberculosis. Intradermal test, ELISA and Dot-immunogold filtration assay (DIGFA) were used for diagnosis and epidemiological survey of paragonimiasis. Phylogenitically, Indian Paragonimus species, although nested within the respective clade were distantly related to others within the clade. |
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ORIGINAL ARTICLES |
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Cervical cancer screening: Current knowledge & practice among women in a rural population of Kerala, India  |
p. 205 |
S Aswathy, Mariya Amin Quereshi, Beteena Kurian, K Leelamoni PMID:22960886Background & objectives: Cervical cancer has a major impact on woman's lives worldwide and one in every five women suffering from cervical cancer belongs to India. Hence the objectives of this study were to find the knowledge of women regarding cervical cancer, to determine screening practices and determinants, and to identify factors for non screening.
Methods: A cross-sectional study was conducted in Vypin Block of Ernakulam District, Kerala, India where four of the seven Panchayats were randomly chosen. Households were selected by systematic random sampling taking every second house in the tenth ward of the Panchayat till at least 200 women were interviewed. Thus, 809 women were interviewed from four Panchayats.
Results: Mean age of the study population was 34.5 + 9.23 yr. Three fourths of the population (74.2%) knew that cervical cancer could be detected early by a screening test. Majority of respondents (89.2%) did not know any risk factor for cervical cancer. Of the 809 women studied, only 6.9 per cent had undergone screening. One third of the population were desirous of undergoing screening test but had not done it due to various factors. These factors related to knowledge (51.4%) such as no symptoms, not being aware of Pap test, not necessary, etc. This was followed by resource factors (15.1%) like no time, no money, etc. and psychosocial factors (10.2%) included lack of interest, fear of procedure, etc. Independent predictors for doing Pap test included age >35, having knowledge of screening for cervical cancer and Pap test (P<0.05).
Interpretation & conclusions: Specific knowledge on cervical cancer screening is a critical element in determining whether a woman will undergo Pap test in addition to making cancer screening facilities available in the primary health centre. |
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Bone marrow cells contribute to tubular epithelium regeneration following acute kidney injury induced by mercuric chloride |
p. 211 |
Neelam Yadav, Someshwara Rao, Dipankar M Bhowmik, Asok Mukhopadhyay PMID:22960887Background & objectives: Acute tubular necrosis (ATN) caused by renal ischaemia, renal hypo-perfusion, or nephrotoxic substances is the most common form of acute kidney injury (AKI). There are a few treatment options for this life-threatening disease and the mortality rate exceeds 50 per cent. In critical cases of AKI the only option is renal transplantation. In the present study we evaluated whether bone marrow cells (BMCs) are involved in regeneration of kidney tubules following acute tubular necrosis in the mouse.
Methods: Six to eight week old C57BL6/J and congenic enhanced green fluorescence protein (eGFP) mice were used. The relative contributions of eGFP-expressing BMCs were compared in two different approaches to kidney regeneration in the mercuric chloride (HgCl 2 )-induced mouse model of AKI: induced engraftment and forced engraftment. In vitro differentiation of lineage-depleted (Lin - ) BMCs into renal epithelial cells was also studied.
Results: In the forced engraftment approach, BMCs were found to play a role in the regeneration of tubules of renal cortex and outer medulla regions. About 70 per cent of donor-derived cells expressed megalin. In vitro culture revealed that Lin - BMCs differentiated into megalin, E-cadherin and cytokeratin-19 (CK-19) expressing renal epithelial cells.
Interpretation & conclusions: The present results demonstrate that Lin - BMCs may contribute in the regeneration of renal tubular epithelium of HgCl 2 -induced AKI. This study may also suggest a potential role of BMCs in treating AKI. |
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Autologous intravenous bone marrow mononuclear cell therapy for patients with subacute ischaemic stroke: A pilot study  |
p. 221 |
Kameshwar Prasad, Sujata Mohanty, Rohit Bhatia, M.V.P. Srivastava, Ajay Garg, Achal Srivastava, Vinay Goyal, Manjari Tripathi, Amit Kumar, Chandrashekar Bal, Aarti Vij, Nalini Kant Mishra PMID:22960888Background & objectives: Bone marrow mononuclear cell therapy has emerged as one of the option for the treatment of Stroke. Several preclinical studies have shown that the treatment with mononuclear cell (MNCs) can reduce the infarct size and improve the functional outcome. We evaluated the feasibility, safety and clinical outcome of administering bone marrow mononuclear cell (MNCs) intravenously to patients with subacute ischaemic stroke.
Methods: In a non-randomized phase-I clinical study, 11 consecutive, eligible and consenting patients, aged 30-70 yr with ischaemic stroke involving anterior circulation within 7 to 30 days of onset of stroke were included. Bone marrow was aspirated from iliac crest and the harvested mononuclear cells were infused into antecubital vein. Outcomes measured for safety included immediate reactions after cell infusion and evidence of tumour formation at one year in whole body PET scan. Patients were followed at week 1, 4-6, 24 and 52 to determine clinical progress using National Institute of Health Stroke Scale (NIHSS), Barthel Index (BI), modified Rankin Scale (mRS), MRI, EEG and PET. Feasibility outcomes included target-dose feasibility. Favourable clinical outcome was defined as mRS score of 2 or less or BI score of 75 to 100 at six months after stem cell therapy.
Results: Between September 2006 and April 2007, 11 patients were infused with bone-marrow mononuclear cells (mean 80 million with CD-34 + mean 0.92 million). Protocol was target-dose feasible in 9 patients (82%). FDG-PET scan at 24 and 52 wk in nine patients did not reveal evidence of tumour formation. Seven patients had favourable clinical outcome.
Interpretation & conclusions: Intravenous bone marrow mononuclear cell therapy appears feasible and safe in patients with subacute ischaemic stroke. Further, a randomized controlled trial to examine its efficacy is being conducted. |
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Association of pro-inflammatory cytokines, adipokines & oxidative stress with insulin resistance & non-alcoholic fatty liver disease |
p. 229 |
Ramesh Kumar, Shyam Prakash, Shruti Chhabra, Vikas Singla, Kaushal Madan, S Datta Gupta, Subrat K Panda, Shankar Khanal, Subrat K Acharya PMID:22960889Background & objectives: The cytokines, adipokines, and oxidative stress have been implicated in the pathogenesis of non-alcoholic fatty liver disease (NAFLD); however, such data remain scarce in India. The present study evaluated pro-inflammatory cytokines, adipokines, and markers of oxidative stress in patients with non-alcoholic fatty liver disease (NAFLD), and their association with degree of adiposity, insulin resistance and markers of disease severity.
Methods: The present prospective cross-sectional pilot study included 79 subjects; 34 NAFLD, 22 chronic hepatitis B (CH-B) and 23 healthy controls (HC). The parameters studied were adiponectin, leptin, tumour necrosis factor α (TNFα), interleukin-1 and 6 (IL-1, IL-6), and systemic markers of oxidative stress.
Results: The mean body mass index (kg/m 2 ) in NAFLD patients, CHB, and HC were 26.4±3.7, 21.3±2.3, and 22.3±2.7, respectively. The median serum levels of all pro-inflammatory cytokines were significantly higher (P<0.001) in NAFLD compared to control groups. Compared to HC, levels of adiponectin and leptin were significantly (P<0.05, P<0.01) reduced in both NAFLD and CHB. IL-6 showed marked and selective increase only in NAFLD patients. The levels of IL-6 were significantly (P<0.02) higher in NAFLD patients with advanced histology grade and correlated with IR (r=0.42, P=0.02). In a sub-group, markers of oxidative stress were significantly higher, and that of antioxidant potential were significantly lower among NAFLD patients compared to control subjects.
Interpretation & conclusions: Patients with NAFLD revealed significantly elevated levels of pro-inflammatory cytokines, increased oxidative stress, and a significant association of IL-6 with IR and advanced histopathology. |
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AmpC β-lactamases in nosocomial isolates of Klebsiella pneumoniae from India |
p. 237 |
Varsha Gupta, Karthikeyan Kumarasamy, Neelam Gulati, Ritu Garg, Padma Krishnan, Jagdish Chander PMID:22960890Background & objectives: AmpC β-lactamases are clinically significant since these confer resistance to cephalosporins in the oxyimino group, 7-α methoxycephalosporins and are not affected by available β-lactamase inhibitors. In this study we looked for both extended spectrum β-lactamases (ESBL) and AmpC β-lactamases in Klebsiella pneumoniae clinical isolates.
Methods: One hundred consecutive, non-duplicate clinical isolates of K. pneumoniae collected over a period of one year (June 2008 - June 2009) were included in the study. An antibiotic susceptibility method was used with 10 antibiotics for Gram-negative infections which helped in screening for ESBL and AmpC β-lactamases and also in confirmation of ESBL production. The detection of AmpC β-lactamases was done based on screening and confirmatory tests. For screening, disc diffusion zones of cefoxitin <18 mm was taken as cefoxitin resistant. All cefoxitin resistant isolates were tested further by AmpC disk test and modified three dimensional test. Multiplex-PCR was performed for screening the presence of plasmid-mediated AmpC genes.
Results: Of the 100 isolates of K. pneumoniae studied, 48 were resistant to cefoxitin on screening. AmpC disk test was positive in 32 (32%) isolates. This was also confirmed with modified three dimensional test. Indentation indicating strong AmpC producer was observed in 25 isolates whereas little distortion (weak AmpC) was observed in 7 isolates. ESBL detection was confirmed by a modification of double disk synergy test in 56 isolates. Cefepime was the best cephalosporin in synergy with tazobactam for detecting ESBL production in isolates co-producing AmpC β-lactamases. The subsets of isolates phenotypically AmpC β-lactamase positive were subjected to amplification of six different families of AmpC gene using multiplex PCR. The sequence analysis revealed 12 CMY-2 and eight DHA-1 types.
Interpretation & conclusions: Tazobactam was the best β-lactamase inhibitor for detecting ESBL in presence of AmpC β-lactamase as this is a very poor inducer of AmpC gene. Amongst cephalosporins, cefepime was the best cephalosporin in detecting ESBL in presence of AmpC β-lactamase as it is least hydrolyzed by AmpC enzymes. Cefepime-tazobactam combination disk test would be a simple and best method in detection of ESBLs in Enterobacteriaceae co-producing AmpC β-lactamase in the routine diagnostic microbiology laboratories. |
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Weight homeostasis & its modulators in hyperthyroidism before & after treatment with carbimazole |
p. 242 |
Pinaki Dutta, Anil Bhansali, Rama Walia, Niranjan Khandelwal, Sambit Das, Shariq Rashid Masoodi PMID:22960891Background & objectives: Hyperthyroidism is associated with increased food intake, energy expenditure and altered body composition. This study was aimed to evaluate the role of adipocytokines in weight homeostasis in patients with hyperthyroidism.
Methods: Patients (n=27, 11men) with hyperthyroidism (20 Graves' disease, 7 toxic multinodular goiter) with mean age of 31.3±4.2 yr and 28 healthy age and body mass index (BMI) matched controls were studied. They underwent assessment of lean body mass (LBM) and total body fat (TBF) by dual energy X-ray absorptiometer (DXA) and blood sample was taken in the fasting state for measurement of leptin, adiponectin, ghrelin, insulin, glucose and lipids. Patients were re-evaluated after 3 months of treatment as by that time all of them achieved euthyroid state with carbimazole therapy.
Results: The LBM was higher (P<0.001) in healthy controls as compared to hyperthyroid patients even after adjustment for body weight (BW), whereas total body fat was comparable between the two groups. Serum leptin levels were higher in patients with hyperthyroidism than controls (22.3±3.7 and 4.1±0.34 ng/ml, P<0.001), whereas adiponectin levels were comparable. Plasma acylated ghrelin was higher in patients than in controls (209.8±13.3 vs 106.2±8.2 pg/ml, P<0.05). Achievement of euthyroidism was associated with significant weight gain (P<0.001) and significant increase in lean body mass (P<0.001). The total body fat also increased but insignificantly from 18.4±1.8 to 19.9±1.8 kg. There was significant decrease (P<0.05) in serum leptin and acylated ghrelin but adiponectin levels remained unaltered after treatment. Serum leptin positively correlated with TBF and this correlation persisted even after adjustment for BW, BMI, gender and age (r=0.62, P=0.001). However, serum leptin and acylated ghrelin did not correlate with the presence or absence of hyperphagia.
Interpretation & conclusion: Patients with hyperthyroidism predominantly had decreased lean body mass which increased after achievement of euthyroidism with carbimazole. The hyperphagia and the alterations in weight homeostasis associated with hyperthyroidism were independent of circulating leptin and ghrelin levels. |
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Polymorphisms of UGT1A1*6, UGT1A1*27 & UGT1A1*28 in three major ethnic groups from Malaysia |
p. 249 |
LK Teh, H Hashim, ZA Zakaria, MZ Salleh PMID:22960892Background & objectives: Genetic polymorphisms of uridine diphosphate glucuronyltransferase 1A1 (UGT1A1) have been associated with a wide variation of responses among patients prescribed with irinotecan. Lack of this enzyme is known to be associated with a high incidence of severe toxicity. The objective of this study was to investigate the prevalence of three different variants of UGT1A1 (UGT1A1*6, UGT1A1*27 and UGT1A1*28), which are associated with reduced enzyme activity and increased irinotecan toxicity, in the three main ethnic groups in Malaysia (Malays, Chinese and Indians).
Methods: A total of 306 healthy unrelated volunteers were screened for UGT1A1*28, UGT1A1*6 and UGT1A1*27. Blood samples (5 ml) were obtained from each subject and DNA was extracted. PCR based methods were designed and validated for detection of UGT1A1*6, UGT1A1*27 and UGT1A1*28. Direct DNA sequencing was performed to validate the results of randomly selected samples.
Results: Malays and Indian have two-fold higher frequency of homozygous of UGT1A1*28 (7TA/7TA) which was 8 and 8.8 per cent, respectively compared to the Chinese (4.9%). However, the distribution of UGT1A1*6 and UGT1A1*27 showed no significant differences among them. UGT1A1*27 which has not been detected in Caucasian and African American population, was found in the Malaysian Malays (3.33%) and Malaysian Chinese (2.0%).
Interpretation & conclusions: There was interethnic variability in the frequency of UGT1A1*28 in the Malaysian population. Our results suggest that genotyping of UGT1A1*6, UGT1A1*28 and UGT1A1*27 need to be performed before patients are prescribed with irinotecan due to their high prevalence of allelic variant which could lead to adverse drug reaction. |
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Isolation of a variant human adenovirus identified based on phylogenetic analysis during an outbreak of acute keratoconjunctivitis in Chennai |
p. 260 |
MK Janani, J Malathi, HN Madhavan PMID:22960893Background & objectives: Though several viruses are responsible for conjunctivitis, but human adenovirus (HAdV) is by far the most common cause. Epidemic conjunctivitis causes morbidity and early detection of aetiological agent is essential in preventing spread of disease as some of serotypes of adenoviruses cause a severe form of conjunctivitis. This study was undertaken to identify the causative agent of conjunctivitis outbreak in Chennai in 2010.
Methods: Conjunctival samples collected from 17 patients with conjunctivitis were subjected to virological investigations. Culture and PCR for detection of adenovirus and enterovirus were carried out. PCR positive products were further subjected for DNA sequencing. The nucleotide sequences of the hexons of isolates were analyzed by comparison with all 51 human adenovirus strains. Phylogenetic tree was constructed using DAMBE software.
Results: Among 17 patients, seven were positive for adenovirus by PCR on the direct specimen, none was positive for enterovirus. Eleven of 30 conjunctival swabs showed cytopathic effect in HEp-2 cell line and were confirmed as HAdV by PCR. The DNA sequence data of the 11 isolates had equal percentage of homology with HAdV 6 and 2 on blast analysis. On phylogenetic analysis with GeneBank data of 51 adenovirus strains, 11 isolates from patients during the outbreak of conjunctivitis formed a separate clade indicating a new variant strain.
Interpretation & conclusions: Based on phylogenetic analysis it was concluded that the recent conjunctivitis outbreak that occurred in Chennai was caused by a variant adenovirus strain. |
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Visual inspection of cervix with Lugol's iodine for early detection of premalignant & malignant lesions of cervix |
p. 265 |
P Ghosh, G Gandhi, PK Kochhar, V Zutshi, S Batra PMID:22960894Background & objectives: Majority of cases of cervical cancer are diagnosed at an advanced stage as cytology based screening programmes are ineffective in developing countries. The present study was done to look for carcinoma cervix and its precursors by visual inspection with Lugol's iodine (VILI), visual inspection with acetic acid (VIA) and Papanicolaou smear, and to analyse their sensitivity, specificity and predictive values using colposcopic directed biopsy as reference.
Methods: In this cross-sectional study, 350 women were subjected to Pap smear, VIA, VILI and colposcopy. Cervical biopsy and endocervical curettage was taken from patients positive on any of these tests and in 10 per cent of negative cases.
Results: The Pap smear was abnormal in 3.71 per cent, including (2.85%), low grade (LSIL) and (0.85%) high grade squamous intraepithelial lesions (HSIL). Thirteen per cent of the patients were found to be positive by VIA and 11.71 per cent were positive on VILI. Sensitivity for VIA, VILI and Pap smear was 89.5, 100 and 52.6 per cent, respectively, while the specificity for VIA, VILI and Pap smear was 91.2, 93.3 and 99.1 per cent, respectively.
Interpretation & conclusions: In low resource settings, cervical cancer screening by Pap smear can be replaced by visual methods like VILI, which has the highest sensitivity (100%) to detect any grade of dysplasia, and a good specificity (93.3%). |
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The effect of warm liver ischaemia & reperfusion injury on circulating plasma lipid levels & lipolytic enzyme activity in rat & the impact of ischaemic preconditioning |
p. 272 |
Sophocles Lanitis, Evangelos Lolis, Nikolaos Dafnios, George Sgourakis, Dionysios C Voros, Ioannis Vassiliou PMID:22960895Background & objectives: Ischaemia/reperfusion (I/R) associated with major liver surgery compromises liver function. Ischaemic preconditioning (IPC) may be effective in minimizing hepatic I/R injury. This study aimed to investigate the impact of liver ischaemic manipulations on lipid metabolism in rat during the process of liver recovery after liver surgery.
Methods: Sixty three male Wistar rats were assigned to three groups: the sham group, the I/R group which underwent warm ischaemia and reperfusion (I/R), and the IPC group. The animals were subdivided in 3 groups [1 st , 3 rd and 7 th postoperative day (PO)]. Hepatic lipase (HL) and total lipase (TL) activity and the levels of aspartate and alanine transaminases (AST, ALT), triglycerides, HDL and cholesterol were measured in plasma.
Results: There was no significant difference in the activity of HL and TL between the groups. Significant higher levels of HDL (P<0.0001) were observed in the IPC group when compared to the other groups on the 3 rd PO day. Triglycerides (P<0.0001) and HDL (P=0.003) in the IPC group were higher than the sham group on the 7 th PO day while HDL was also higher in the I/R group. Significantly higher cholesterol levels were found in the I/R and IPC groups on the 7 th PO day, which were not observed in the sham group. There was a similar curve for triglycerides in the sham and IPC groups while there were significantly higher levels of triglycerides on day 7 for the I/R group. The levels of HDL in the IPC group were higher on the 3 rd and 7 th PO day, compared to day 1.
Interpretation & conclusion: Warm ischaemia and I/R injury do not seem to affect lipolytic enzyme activity after the 1 st PO day despite the effects on plasma lipids. IPC seems to prevent accumulation of triglycerides and cholesterol in plasma. |
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Cross-cultural standardization of the South Texas Assessment of Neurocognition in India |
p. 280 |
S Cherkil, S Satish, SS Mathew, N Dinesh, C.T.S. Kumar, LE Lombardo, DC Glahn, S Frangou PMID:22960896Background & objectives: Despite the central role of cognition for mental disorders most studies have been conducted in western countries. Similar research from other parts of the world, particularly India, is very limited. As a first step in closing this gap this cross-cultural comparability study of the South Texas Assessment of Neurocognition (STAN) battery was conducted between USA and India.
Methods: One hundred healthy adults from Kerala, India, were administered six language independent subtests of the Java Neuropsychological Test (JANET) version of the STAN, assessing aspects of general intellectual ability (Matrix Reasoning), attention (Identical Pairs Continuous Performance, 3 Symbol Version Test; IPCPTS), working memory (Spatial Capacity Delayed Response Test; SCAP), response inhibition (Stop Signal Reaction Time; SSRT), Emotional Recognition and Risk taking (Balloon Analogue Risk Task; BART). Test results were compared to a demographically matched US sample.
Results: Overall test performance in the Kerala sample was comparable to that of the US sample and commensurate to that generally described in studies from western countries.
Interpretation & conclusions: Our results support the metric equivalence of currently available cognitive test batteries developed in western countries for use in India. However, the sample was restricted to individuals who were literate and had completed basic primary and secondary education. |
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High occurrence of blaCMY-1 AmpC lactamase producing Escherichia coli in cases of complicated urinary tract infection (UTI) from a tertiary health care centre in north India |
p. 289 |
Neelam Taneja, Gagandeep Singh, Meenakshi Singh, Surendra Madhup, Sapna Pahil, Meera Sharma PMID:22960897AmpC beta lactamase producing Gram-negative bacteria have emerged worldwide. It is important to distinguish plasmid mediated AmpC β lactamases from chromosomally mediated enzymes for surveillance, epidemiology and hospital infection control as plasmid mediated genes can spread to other organisms. Occurrence of blaCMY-1 AmpC β-lactamase, a plasmid mediated cephamycinase was studied in 100 consecutive isolates of Escherichia coli from cases of complicated urinary tract infection (UTI). Screening for AmpC production was done by modified Hodge test, three dimensional test and AmpC disk test. All isolates showing a positive result by 2 out of 3 tests were then tested for blaCMY-1 gene by PCR. Fifty nine isolates were positive for AmpC β lactamase production, 56.6 per cent were positive by PCR. Eight out of 13 isolates which were negative by EDTA disk method were positive by PCR, whereas none of the isolates negative by 3D and modified Hodge test was positive by PCR. Among admitted patients urinary catheterisation was the major risk factor followed by obstructive uropathy, three patients developed urosepsis. High occurrence of blaCMY-1 AmpC β-lactamase warrants health care workers to endorse good hospital practices. |
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Genetic polymorphism in Plasmodium falciparum: Differentiation of parasite isolates of high & low virulence by RAPD |
p. 292 |
U Farooq, ML Dubey, SK Shrivastava, RC Mahajan PMID:22960898Background & objectives: The increase in Plasmodium falciparum infections which are associated with severe and complicated malaria and drug resistance has made control of malaria a difficult task. Extensive genetic polymorphism in P. falciparum has been reported from several parts of the world which affects the efficacy of sub-unit vaccines. The knowledge of genotypes of the parasite in a geographical region is therefore, important for effective management and control. The aim of the present study was to investigate the usefulness of random amplified polymorphic DNA (RAPD)-PCR technique for differentiation of P. falciparum isolates from patients presenting with severe (cerebral malaria) and mild malaria.
Methods: Genetic polymorphism in 21 P. falciparum isolates obtained from patients found positive for P. falciparum by light microscopy was studied by RAPD-PCR analysis. Eleven RAPD primers were used for analysis of 21 P. falciparum isolates obtained from cerebral and non-cerebral malaria patients.
Results: Of the 11 primers, only three (E-4, E-8, and R-8) produced useful polymorphic patterns. The cluster analysis based on UPGMA demonstrated that isolates causing cerebral malaria cluster separately from those causing uncomplicated malaria. However, the analysis of phylogenic tree showed that P. falciparum isolates causing non-cerebral and cerebral malaria clustered separately but showed relatedness.
Interpretation & conclusions: The results of the present study showed that the RAPD-PCR was able to differentiate the isolates causing severe and mild malaria. The cluster analysis of the phylogenic tree suggested that the virulent strains evolved from less virulent strains as it clustered separately. RAPD technique may be useful in discriminating between the different isolates of the same species resulting in different clinical profiles. |
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CORRESPONDENCE |
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Unexplained early pregnancy loss: Role of paternal DNA |
p. 296 |
Kishlay Kumar, J Thilagavathi, Deepika Deka, Rima Dada PMID:22960899 |
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Public health & GIS: Views & opinions of Indian users |
p. 299 |
Vasna Joshua, A Elangovan, V Selvaraj, TP Ahluwalia, S Mehendale PMID:22960900 |
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Outdoor physical activity & cardiovascular health |
p. 301 |
S Sivasankaran PMID:22960901 |
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Aetiological agents of community acquired pneumonia |
p. 304 |
Oguz Karabay, Mehmet Yahyaoglu PMID:22960902 |
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Authors' response |
p. 304 |
Atif H Asghar, Syed Zahid Bukhari |
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HCV genotypes distribution pattern in India |
p. 306 |
Farah Bokharaei-Salim, Seyed Moayed Alavian PMID:22960903 |
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Authors' response |
p. 307 |
Anita Chakravarti, Gaurav Dogra, Vikas Verma, Amit Parkash Srivastava |
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Changes in markers of bone turnover during treatment of hyperthyroidism |
p. 309 |
Eda Demir Onal PMID:22960904 |
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Authors' response |
p. 310 |
Viveka P Jyostna, Abhay Sahoo, Singh Achouba Ksh, V Sreenivas, Nandita Gupta |
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Vitamin D deficiency in hyperthyroidism |
p. 311 |
Dinesh K Dhanwal PMID:22960905 |
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Authors' response |
p. 311 |
Viveka P Jyostna, Abhay Sahoo, Singh Achouba Ksh, V Sreenivas, Nandita Gupta |
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CLINICAL IMAGES |
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An unusual cause of superior vena cava syndrome |
p. 312 |
Surendra K Sharma, Manish Soneja PMID:22960906 |
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BOOK REVIEWS |
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Nutrition and fitness: Cultural, genetic and metabolic aspects |
p. 313 |
Jaspal S Sandhu |
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Ensuring balance in national policies on controlled substances: Guidance for availability and accessibility of controlled medicines |
p. 314 |
Raka Jain |
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IJMR CLASSIC |
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A new serum test for kala-azar |
p. 321 |
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MOST CITED ARTICLES |
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Most Cited Articles |
p. 341 |
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ARTICLE |
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Infections due to non-tuberculous mycobacteria (NTM) |
p. 343 |
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