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2006| February | Volume 60 | Issue 2
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PRACTITIONERS SECTION
Metabolic syndrome
Atul Gogia, PK Agarwal
February 2006, 60(2):72-81
DOI
:10.4103/0019-5359.19918
PMID
:16505579
The Metabolic syndrome is a widely prevalent and multi-factorial disorder. The syndrome has been given several names, including- the metabolic syndrome, the insulin resistance syndrome, the plurimetabolic syndrome, and the deadly quartet. With the formulation of NCEP/ATP III guidelines, some uniformity and standardization has occurred in the definition of metabolic syndrome and has been very useful for epidemiological purposes. The mechanisms underlying the metabolic syndrome are not fully known; however resistance to insulin stimulated glucose uptake seems to modify biochemical responses in a way that predisposes to metabolic risk factors. The clinical relevance of the metabolic syndrome is related to its role in the development of cardiovascular disease. Management of the metabolic syndrome involves patient-education and intervention at various levels. Weight reduction is one of the main stays of treatment. In this article we comprehensively discuss this syndrome- the epidemiology, pathogenesis, clinical relevance and management. The need to do a comprehensive review of this particular syndrome has arisen in view of the ever increasing incidence of this entitiy. Soon, metabolic syndrome will overtake cigarette smoking as the number one risk factor for heart disease among the US population. Hardly any issue of any primary care medical journal can be opened without encountering an article on type 2 diabetes, dyslipidemia or hypertension. It is rare to see type 2 diabetes, dyslipidemia, obesity or hypertension in isolation. Insulin resistance and resulting hyperinsulinemia have been implicated in the development of glucose intolerance (and progression to type 2 diabetes), hypertriglyceridemia, hypertension, polycystic ovary yndrome, hypercoagulability and vascular inflammation, as well as the eventual development of atherosclerotic cardiovascular disease manifested as myocardial infarction, stroke and myriad end organ diseases. Conversely, treatment and consequent improvement of insulin resistance have been shown to result in better outcomes in virtually all of these conditions.
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ORIGINAL CONTRIBUTIONS
Choice of antibiotic for empirical therapy of acute cystitis in a setting of high antimicrobial resistance
Debasis Biswas, Pratima Gupta, Ramjee Prasad, Vikram Singh, Muktanjali Arya, Ashish Kumar
February 2006, 60(2):53-58
DOI
:10.4103/0019-5359.19913
PMID
:16505574
Background: A high prevalence of antimicrobial resistance among urinary isolates in the Garhwal region of Uttaranchal. Aims: To identify the most appropriate antibiotic for empirical treatment of community-acquired acute cystitis on the basis of local antimicrobial sensitivity profile. Settings and Design: A prospective clinico-microbiological study including all clinically diagnosed patients with community acquired acute cystitis attending a tertiary care teaching hospital over a period of three years. Methods and Material: Clean-catch midstream urine specimens, from 524 non-pregnant women with community-acquired acute cystitis, were subjected to semi-quantitative culture and antibiotic susceptibility by the Kirby- Bauer disc diffusion method. A survey was also conducted on 30 randomly selected local practitioners, to know the prevalent prescribing habits in this condition. Statistical Analysis: The difference between the susceptibility rates of E. coli isolates to Nitrofurantoin and the other commonly prescribed antibiotics was analysed by applying the z test for proportion. Results: 354 (67.5%) specimens yielded significant growth of E. coli. >35% of the urinary E.coli isolates were resistant to the fluoroquinolones, which were found to be the most commonly used empirical antibiotics in acute cystitis. Resistance was minimum against Nitrofurantoin (9.3%, 33) and Amikacin (11.0%,39). >80% of the fluoroquinolone-resistant strains were found to be sensitive to Nitrofurantoin. Conclusion: The best in vitro susceptibility profile in our study has been shown by Nitrofurantoin and a significantly high proportion of the urinary E. coli isolates have already developed resistance to the currently prescribed empirical antibiotics, viz. the fluoroquinolones. In view of these in vitro susceptibility patterns, a transition in empirical therapy appears imminent.
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CASE REPORT
Anticonvulsant hypersensitivity syndrome to lamotrigine confirmed by lymphocyte stimulation in vitro
Sunil Karande, Nithya J Gogtay, Sandeep Kanchan, Nilima A Kshirsagar
February 2006, 60(2):59-63
DOI
:10.4103/0019-5359.19914
PMID
:16505575
Anticonvulsant hypersensitivity syndrome (AHS) developing to lamotrigine, a non-aromatic anticonvulsant, has rarely been reported. We present a two-year-old boy with refractory epilepsy on valproic acid and lamotrigine therapy who developed fever and a maculopapular itchy rash. Blood investigations detected lymphocytosis and thrombocytopenia. With a presumptive diagnosis of AHS, lamotrigine was discontinued. The fever and rash resolved over the next three days and the child was discharged on valproic acid and clobazam. The diagnosis was confirmed by in vitro lymphocyte toxicity assay, which not only demonstrated increased cell death following exposure to lamotrigine, but also to the three first-line aromatic anticonvulsants: phenytoin, phenobarbital and carbamazepine. The potential of first-line aromatic anticonvulsants to cause AHS should be remembered in a patient who has developed AHS on exposure to lamotrigine. Timely recognition of this rare but potentially fatal drug reaction is important.
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ORIGINAL CONTRIBUTIONS
Demyelinating disease simulating brain tumours: A histopathologic assessment of seven cases
Deepali Jain, LS Rajesh, RK Vasishta, BD Radotra, AK Banerjee
February 2006, 60(2):47-52
DOI
:10.4103/0019-5359.19912
PMID
:16505573
Background: Demyelinating diseases can present as space occupying lesions with in the brain. It is clinically and radiologically difficult to differentiate them from primary neoplasms. Histopathologically they mimic astrocytic neoplasms closely and identifying these lesions correctly has a profound impact in treatment and prognosis of these patients. Aims and Objectives: The objective was to determine the histopathologic features of such acute focal demyelinating disease that clinically presented as brain tumors. Material and Methods: Seven cases were included for the study. Detailed histopathological examination including stains for myelin and axon were performed. The histopathological keys in arriving at the right diagnoses included a well demarcated lesion that contains uniform distribution of foamy macrophages in the absence of any associated coagulative necrosis, sheets of gemistocytic astrocytes in the white matter that show well-formed processes, perivascular chronic inflammatory cell infiltration and total absence of myelin with relative preservation of axons within these areas. Conclusion: The degree of suspicion (clinical, radiological and histopathological) should be high to diagnose these group of lesions. The above-mentioned diagnostic keys should help in arriving at the correct histopathological diagnoses of such cases.
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CASE REPORT
Paroxysmal nocturnal hemoglobinuria in childhood: An uncommon presentation
Vineeta Gupta, V Tilak, S V.K. Ramakrishna, BD Bhatia
February 2006, 60(2):64-67
DOI
:10.4103/0019-5359.19915
PMID
:16505576
An eight year old boy presented with severe anemia and bleeding spots. Complete blood count showed pancytopenia. There was mild reticulocytosis. Bone marrow was hypocellular with normoblastic erythroid hyperplasia. Ham's test (acidified serum test) was positive which confirmed the diagnosis of Paroxysmal nocturnal hemoglobinuria (PNH). Although PNH is rare in childhood, it should be considered as a diagnostic possibility in cases of aplastic anemia as the two conditions can coexist. The presence of PNH in association with aplastic anemia can influence the outcome of the latter.
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LETTER TO EDITOR
Multiple visceral abscess in a case of melioidosis
Udayakumar Navaneethan, AC Ramesh Kumar, G Ravi
February 2006, 60(2):68-70
DOI
:10.4103/0019-5359.19916
PMID
:16505577
[FULL TEXT]
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Emotional impact following the tsunami in endogenous people and mainland settlers in the Andaman islands
Shirley Telles, Manoj Dash, KV Naveen
February 2006, 60(2):70-71
DOI
:10.4103/0019-5359.19917
PMID
:16505578
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© 2004 - Indian Journal of Medical Sciences
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Online since 15
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December '04