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1.  Demographics, Clinical Characteristics and Management of Herbicide Poisoning in Tertiary Care Hospital 
Toxicology International  2014;21(2):209-213.
Herbicide poisoning is most common method of suicide in India and it is associated with high morbidity and mortality. Among different herbicidal poisonings the most predominantly found poisonings are paraquat and glyphosate. These compounds are highly toxic and their poisonings require proper management techniques. High fatality is seen in these cases which are mainly due to its inherent toxicity and lack of effective treatment. Common symptoms of these poisonings includes gastrointestinal corrosive effects with mouth and throat, epigastric pain and dysphagia, acid-base imbalance, pulmonary edema, shock and arrhythmia. Long term health effects include pulmonary fibrosis, renal failure, hepatic failure, heart failure, multi-organ failure or death. No proven antidote exists for these poisonings. So the treatment is mainly supportive. Initially gastric lavage or whole-gut irrigation using adsorbents such as Fuller's earth, bentonite or activated charcoal is recommended. In case of renal failure hemodialysis or hemoperfusion may be considered. However novel approaches like treatment with N-acetylcysteine, vitamin C, vitamin E, cyclophosphamide may also be helpful.
PMCID: PMC4170565  PMID: 25253933
Glyphosate; herbicide; poisoning; paraquat; treatment
2.  Mucoadhesive microparticulate drug delivery system of curcumin against Helicobacter pylori infection: Design, development and optimization 
The purpose of the present research was to develop and characterize mucoadhesive microspheres of curcumin for the potential use of treating gastric adenocarcinoma, gastric and duodenal ulcer associated with Helicobacter pylori. Curcumin mucoadhesive microspheres were prepared using ethyl cellulose as a matrix and carbopol 934P as a mucoadhesive polymer by an emulsion-solvent evaporation technique. Response surface methodology was used for optimization of formulation using central composite design (CCD) for two factors at three levels each was employed to study the effect of independent variables, drug:polymer:polymer ratio (curcumin:ethylcellulose:carbopol 934P)(X1) and surfactant concentration (X2) on dependent variables, namely drug entrapment efficiency (DEE), percentage mucoadhesion (PM), in vitro drug release and particle size (PS). Optimized formulation was obtained using desirability approach of numerical optimization. The experimental values of DEE, PM, % release and PS after 8 h for the optimized formulation were found to be 50.256 ± 1.38%, 66.23%±0.06, 73.564 ± 1.32%, and 139.881 ± 2.56 μm, respectively, which were in close agreement with those predicted by the mathematical models. The drug release was also found to be slow and extended more than 8 h and release rates were fitted to the Power law equation and Higuchi model to compute the diffusional parameters. The prolonged stomach residence time of curcumin mucoadhesive microspheres might make a contribution to H. pylori complete eradication in combination with other antimicrobial agents.
PMCID: PMC3960795  PMID: 24696817
Curcumin; Helicobacter pylori; mucoadhesive
3.  Fulminant antiphospholipid antibody syndrome complicated by Aspergillus tracheobronchitis 
Medical Mycology Case Reports  2012;1(1):99-102.
Aspergillus fumigatus is a filamentous mold that causes infections in patients who are inmmunocompromised. We report a case of Aspergillus tracheobronchitis in fulminant systemic lupus erythematosus case. Diagnosis with more invasive diagnostic procedures & aggressive antifungal therapy is indicated at early stage.
PMCID: PMC3854765  PMID: 24371751
Systemic Lupus Erythematosus (SLE); Invasive; Pulmonary; Aspergillosis; Tracheobronchitis
4.  Study of Clinical Profile and Antibiotic Sensitivity Pattern in Culture-positive Typhoid Fever Cases 
Salmonella enteric serotype Typhi has created a significant therapeutic problem as these strains have developed resistance to the commonly used antimicrobials for the treatment of typhoid fever.
To assess the clinical profile and sensitivity patterns to anti-typhoid drugs.
Materials and Methods:
A retrospective analysis of 106 culture-positive typhoid cases admitted in a tertiary care hospital during the years 2005-2008.
Records of 106 patients were evaluated, 83 (78.3%) males and 23 (21.7%) females. Fever was present in all patients. Headache in 63 (59.4%) patients and generalized body ache in 53 (32.5%) patients were the most common symptoms, while spleenomegaly in 47 (44.3%) patients and hepatomegaly in 42 (39.6%) patients were the common presenting signs. A maximum sensitivity of 96.6% was observed with cephalosporins, whereas a resistance of 29.2% was seen with fluoroquinolones.
A high degree of sensitivity was noted to chloramphenicol, ampicillin and sulphonamides, showing a trend of roll-back of sensitivity to conventional antibiotics.
PMCID: PMC3531020  PMID: 23293441
Antibiotic sensitivity; clinical profile; typhoid fever
5.  A rare case of seronegative culture-­proven infection with Brucella suis 
The Australasian Medical Journal  2012;5(7):340-343.
Brucellosis is a chronic infection produced by members of the Brucella family. Diagnosis of this condition requires either isolation of the organism in culture or positive serological tests.
We describe a 27-year-old male admitted as a case of pyrexia of unknown origin (PUO), who tested negative for Brucella IgM ELISA test on preliminary evaluation but was subsequently diagnosed on the strength of positive blood and bone marrow cultures to be a case of brucellosis secondary to Brucella suis infection. In addition to highlighting the pathogenic potential of an unusual organism, this case demonstrates the unreliability of standard serological tests based on the Brucella melitensis antigen for infection with other species of Brucella.
PMCID: PMC3412998  PMID: 22905059
Brucella suis; pyrexia of unknown origin; serological tests
6.  In vitro-in vivo evaluation of fast-dissolving tablets containing solid dispersion of pioglitazone hydrochloride 
Investigation of in vitro/in vivo behavior of fast-dissolving tablets containing solid dispersions of pioglitazone hydrochloride (PIO) is the focus of the present research work. The effect of various hydrophilic polymers on the aqueous solubility of PIO was studied. Poly vinyl pyrrolidine K 30 (PVPK 30) carrier was selected and solid dispersions were prepared by various methods. Evaluation of solid dispersion for percentage yield, drug content, solubility, and Fourier Transform Infrared-indicated kneading method was most appropriate. Furthermore, the dissolution studies exhibited an enhancement in drug dissolution. One-way ANOVA of in vitro data suggested that there was significant (P ≤ 0.05) difference in dissolution profile of PIO solid dispersion when compared with pure drug and commercial product. Infrared spectroscopy, differential scanning calorimetry, and powder X-ray diffraction performed on solid dispersion indicated lack of physicochemical interaction between the drug and the carrier. The selected formulation is compressed into fast-dissolving tablets which were further evaluated for tablet properties and in vitro drug release. In vivo studies of pure drug, selected formulation, and marketed product were carried out in male Wistar rats and pharmacokinetic parameters were calculated using Kinetica software 2000. The best formulation has shown Tmax of 1 hour which was highly significant (P < 0.01) when compared with pure drug and marketed formulation. Therefore, the solid dispersions prepared by kneading method using PVPK 30 as hydrophilic carrier can be successfully used for improvement of dissolution of PIO and resulted in faster onset of action as indicated by in vivo studies.
PMCID: PMC3459445  PMID: 23057002
Dissolution profile; hydrophilic carriers; kneading method; solubility; solid dispersions
7.  Study of Clinical Profile and Antibiotic Sensitivity in Paratyphoid Fever Cases Admitted at Teaching Hospital in South India 
Globally, there has been an increase in incidence of paratyphoid fever, including paratyphoid fever caused by antimicrobial-resistant strains. Studying the clinical profile and antimicrobial sensitivity of paratyphoid fever would help in early diagnosis, appropriate treatment, rational use of antibiotics and prevent drug resistance.
The aim of the study was to evaluate the clinical profile and sensitivity patterns of antibiotics used in the treatment of paratyphoid fever.
Settings and Design:
A record-based study was done in tertiary care hospital, South India.
Materials and Methods:
A retrospective analysis of culture-proven cases of paratyphoid fever was done in a tertiary care hospital. The socio-demographic characteristics, mode of presentation and the sensitivity pattern of isolates from blood culture were recorded. One hundred and ten case files of Salmonella paratyphi were reviewed from the medical records section and the required data (data regarding the clinical profile and antibiotic sensitivity) was collected and analyzed using SPSS version 11.5.
Fever was present in all patients. All the cases were sensitive for third-generation cephalosporins, and only 31.8% of the cases were sensitive for quinolones. Sensitivity towards other antibiotics in descending order was as follows: ampicillin 93.6%, chloramphenicol 91.8%, aminoglycosides 90.4% and sulphonamides 76.4%.
Research shows that there is increasing resistance to fluoroquinolones and sensitivity to chloramphenicol. Considering the changing trend in the sensitivity pattern, the recommendations of treatment for enteric fever need to be rationalized and re-considered.
PMCID: PMC3893971  PMID: 24479019
Antibiotic sensitivity; enteric fever; paratyphoid
8.  Development and validation of the liquid chromatographic method for simultaneous estimation of metformin, pioglitazone, and glimepiride in pharmaceutical dosage forms 
Pharmaceutical Methods  2012;3(1):9-13.
A simple, precise, and accurate HPLC method for simultaneous estimation of metformin hydrochloride (MET), pioglitazone hydrochloride (PIO), and glimepiride (GLIMP) was developed and validated.
Materials and Methods:
Chromatographic separation of the drugs was performed by using a Phenomenex-ODS-3 (C-18) column (250 × 4.60 mm, 5 μm) with a mobile phase consisting of methanol:acetonitrile:15 mM potassium dihydrogen phosphate (pH 4) in the proportion of 40:35:25 (v/v) at a flow rate of 1 ml/min. Detection was carried out using a UV-SPD-10AVP detector at 240 nm.
The retention time for MET, PIO, and GLIMP were 2.85 ± 0.03 min, 4.52 ± 0.03 min, and 7.08 ± 0.02min, respectively. Parameters such as linearity (0.2–50 μg/ ml for MET, 0.2–30 μg/ml for PIO, and GLIMP, respectively), precision (intra-day % RSD was 1.01–3.24 and inter-day % RSD was 1.54–4.09 for MET; intra-day % RSD was 1.03–2.09 and inter-day % RSD was 2.26–3.10 for PIO; and intra-day% RSD was 1.00–3.15 and inter-day % RSD was 1.58–3.07 for GLIMP), accuracy (99.66 ± 0.14 for MET, 98.46 ± 0.40 for PIO, and 98.62 ± 0.39 for GLIMP), specificity and robustness were calculated in accordance with ICH guidelines.
The method was proved to be simple, rapid, precise, accurate, and cost effective.
PMCID: PMC3658067  PMID: 23781471
Glimepiride; ICH guidelines ;  metformin hydrochloride; pioglitazone hydrochloride; simultaneous
9.  Posterior circulation ischemic stroke following Russell's viper envenomation 
Ischemic stroke following viper bite is rare. We report a case of posterior circulation ischemic infarction following viper bite in a previously healthy woman. Soon after being bitten by the snake on the left leg, she developed local redness, echymosis and one hour later became drowsy. On examination she had skew deviation of eyes and down gaze preference, generalized hypotonia. A CT scan of brain showed infarcts in cerebellar hemispheres and occipital lobes on both sides and that was confirmed on magnetic resonance imaging of brain. Her coagulation profile was deranged. Most common and serious central nervous system complication following snake bite is intracranial hemorrhage. Ischemic stroke commonly involves anterior circulation. Bilateral cerebellar and occipital infraction is not yet reported in literature. Exact cause for the development of infarction is not clear. The possible mechanisms of infarction in this scenario are discussed. Patient was treated with anti-snake venom and showed a good recovery. Early imaging and early treatment with anti-snake venom is important for a favorable outcome.
PMCID: PMC3271473  PMID: 22346023
Viper envenomation; ischemic stroke; posterior circulation
11.  A case of organophosphate poisoning presenting with seizure and unavailable history of parenteral suicide attempt 
Organophosphate (OP) poisoning is common in India. Only few case reports of parenteral OP poisoning have been described. We report a case of self-injected methyl parathion poisoning, presenting after four days with seizure, altered sensorium, and respiratory distress which posed a diagnostic and therapeutic dilemma. Despite nonavailability of history of OP poisoning, he was treated based on suspicion and showed a good clinical response to treatment trial with atropine and pralidoxime, and had a successful recovery. Atypical presentations may be encountered following parenteral administration of OP poison, and even a slight suspicion of this warrants proper investigations and treatment for a favorable outcome. Persistently low plasma cholinesterase level is a useful marker for making the diagnosis.
PMCID: PMC3097564  PMID: 21633583
Organophosphate poison; parenteral; seizure
12.  Clinical Manifestations and Trend of Dengue Cases Admitted in a Tertiary Care Hospital, Udupi District, Karnataka 
India is one of the seven identified countries in the South-East Asia region regularly reporting dengue fever (DF)/dengue hemorrhagic fever (DHF) outbreaks and may soon transform into a major niche for dengue infection in the future with more and more new areas being struck by dengue epidemics
To study the clinical manifestations, trend and outcome of all confirmed dengue cases admitted in a tertiary care hospital.
Study Design:
Record-based study conducted in a coastal district of Karnataka. Required data from all the laboratory confirmed cases from 2002 to 2008 were collected from Medical Records Department (MRD) and analyzed using SPSS 13.5 version.
Study included 466 patients. Majority were males, 301(64.6%) and in the and in the age group of 15-44 years, 267 (57.5%). Maximum number of cases were seen in 2007, 219 (47%) and in the month of September, 89 (19.1%). The most common presentation was fever 462 (99.1%), followed by myalgia 301 (64.6%), vomiting 222 (47.6%), headache 222 (47.6%) and abdominal pain 175 (37.6%). The most common hemorrhagic manifestation was petechiae 84 (67.2%). 391 (83.9%) cases presented with dengue fever, 41 (8.8%) dengue hemorrhagic fever, and 34 (7.3%) with dengue shock syndrome. Out of 66 (14.1%) patients who developed clinical complications, 22 (33.3%) had ARDS and 20 (30.3%) had pleural effusion. Deaths reported were 11(2.4%).
Community awareness, early diagnosis and management and vector control measures need to be strengthened, during peri-monsoon period, in order to curb the increasing number of dengue cases.
PMCID: PMC2963875  PMID: 21031102
Dengue; dengue hemorrhagic fever; dengue shock syndrome
13.  Zidovudine-induced reversible pure red cell aplasia 
Indian Journal of Pharmacology  2010;42(3):189-191.
Hematological abnormalities are frequent among human immunodeficiency virus (HIV)-infected patients and may be directly attributable to the virus or may be caused by opportunistic infections, neoplasms or drugs that cause bone marrow suppression or hemolysis. Pure red cell aplasia (PRCA) is an uncommon hematological disorder that causes anemia. We report a 37-year-old male with HIV infection who developed PRCA 6 weeks after commencing Zidovudine and recovered following cessation of the drug. This is the first case of Zidovudine-induced PRCA reported from the Indian subcontinent.
PMCID: PMC2937323  PMID: 20871773
HIV; pure red cell aplasia; Zidovudine

Results 1-13 (13)