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Sodhi KS, Suri S, Samujh R, Rao KLN, Vaiphei K, Saxena AK. Case report: bilateral multilocular cystic nephromas: a rare occurrence. Br J Radiol 2005; 78:450-2. [PMID: 15845943 DOI: 10.1259/bjr/62643156] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
We present a rare case of bilateral renal cystic tumours in an 18-month-old female child, which proved to be cystic nephromas on imaging and histopathology. Although unilateral cystic nephromas are known in children; the occurrence of bilateral tumours is rare.
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Vaiphei K, Gupta N, Sinha SK, Nagi B, Singh K. Association of ulcerative colitis with pulmonary sarcoidosis, subcutaneous lipomatosis and appendiceal adenocarcinoma. Indian J Gastroenterol 2004; 22:193-4. [PMID: 14658541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report a 52-year-old man with left-sided ulcerative colitis for 5 years and pulmonary sarcoidosis diagnosed 3 years back. He presented with subcutaneous lipomatosis and a right iliac fossa mass, which was diagnosed histologically as appendiceal adenocarcinoma. He was treated with right hemicolectomy, followed by chemotherapy.
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Vaiphei K, Saha M, Sharma BC, Bhasin DK, Singh K. Goblet cell status in idiopathic ulcerative colitis--implication in surveillance program. INDIAN J PATHOL MICR 2004; 47:16-21. [PMID: 15471116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023] Open
Abstract
Idiopathic ulcerative colitis (IUC) patients have higher incidence of dysplasia and malignancy. Close follow-up with biopsy at regular interval is mandatory. The study was done to correlate incidence of atypical epithelium, goblet cell hyperplasia (GCH) and disease duration (DD) with Ki67, AgNOR and p53 expression in IUC with disease for 5 or more years. Ki67 and AgNOR are good indicators of cellular proliferation and p53 tumour suppressor protein is a marker for neoplastic cell. Of 130 cases studied, 40 cases showed atypical epithelium and were selected for further study. DD in these 40 cases ranged from 60 to 228 months. All had GCH and showed histological features of chronicity. Low-grade dysplasia (LGD) was seen in 15 cases, indefinite for dysplasia (ID) in 8 and inflammatory atypia in 17 cases. Disease duration showed no influence in the type of atypical epithelium. A positive staining of lining epithelium by Ki67 and p53 was not restricted to dysplasia. LGD and ID showed stronger p53 nuclear staining. AgNOR appeared to be a more sensitive marker than Ki67. GCH showed a positive correlation with DD and AgNOR index. p53 expression correlated positively with goblet cell hyperplasia. Conclusion- goblet cell hyperplasia could indicate presence of epithelial cell dysplasia.
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Nain CK, Kaur U, Chhabra M, Goel RC, Singh V, Vaiphei K, Singh K. Chronic alcohol intake and gastric bicarbonate. J Clin Gastroenterol 2003; 37:86. [PMID: 12811218 DOI: 10.1097/00004836-200307000-00022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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Prasad RM, Bose SM, Vaiphei K, Verma GR. Post operative abdominal wall mucormycosis mimicking as bacterial necrotising fasciitis. J Postgrad Med 2003; 49:187-8. [PMID: 12867706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
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Mohanty SK, Vaiphei K, Dutta U, Singh K. Granulomatous cryptococcal lymphadenitis in immunocompetent individuals: report of two cases. Histopathology 2003; 42:96-7. [PMID: 12493035 DOI: 10.1046/j.1365-2559.2003.01513_4.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Chandra S, Dutta U, Das R, Vaiphei K, Nagi B, Singh K. Mesenteric venous thrombosis causing jejunal stricture: secondary to hypercoagulable states and primary portal hypertension. Dig Dis Sci 2002; 47:2017-9. [PMID: 12353848 DOI: 10.1023/a:1019664627149] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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Dutta U, Nagi B, Kumar A, Vaiphei K, Wig JD, Singh K. Pneumobilia--clue to an unusual cause of diarrhea. TROPICAL GASTROENTEROLOGY : OFFICIAL JOURNAL OF THE DIGESTIVE DISEASES FOUNDATION 2002; 23:138-40. [PMID: 12693157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
Abstract
A 65-year lady presented with diarrhea and weight loss of six months duration. Initial evaluation suggested that malabsorption was the possible underlying mechanism for the diarrhea. Work up for the common etiologies of malabsorption was non-contributory. Presence of pneumobilia raised the suspicion of a bilio-enteric fistula, which was subsequently confirmed on barium enema and endoscopic cholangio-pancreaticography to be a cholecystocolic fistula. At surgery, a fistulous tract from the fundus of the gallbladder was found to be communicating with the hepatic flexure. Fistulectomy with cholecystectomy resulted in prompt relief of symptoms. Cholecystocolic fistula (CCF) is a rare biliary fistula with diverse presentation.
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Malhi NS, Bhasin DK, Gupta NM, Vaiphei K, Singh K. Exacerbation of ulcerative colitis by cytomegalovirus infection in an immunocompetent Indian patient. TROPICAL GASTROENTEROLOGY : OFFICIAL JOURNAL OF THE DIGESTIVE DISEASES FOUNDATION 2002; 23:88-90. [PMID: 12632977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
A patient with typical features of idiopathic ulcerative colitis, in remission, developed an attack of severe colitis. Sigmoidoscopy showed submucosal black nodules in the sigmoid colon. Mucosal biopsies from the involved areas showed evidence of acute on chronic colitis with cytomegalic cells and intra-nuclear inclusions suggestive of cytomegalovirus (CMV) disease. The patient attained remission following subtotal colectomy and intravenous ganciclovir therapy for 3 weeks. The patient had another relapse five months later. The colonic biopsies during this relapse showed evidence only of idiopathic ulcerative colitis, with no CMV infection. The patient responded well to steroid therapy.
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Bhansali A, Suresh V, Chaudhry D, Vaiphei K, Dash RJ, Kotwal N. Diabetes and rapidly advancing pneumonia. Postgrad Med J 2001; 77:734-5, 740-1. [PMID: 11677289 PMCID: PMC1742174 DOI: 10.1136/pmj.77.913.734a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Nada R, Vaiphei K, Singh R, Wig JD, Gupta NM, Banerjee AK. Gastrointestinal stromal tumors the assessment of malignant potential. INDIAN J PATHOL MICR 2001; 44:393-7. [PMID: 12035347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
GISTS are the largest category of non-epithelial neoplasms of stomach and small bowel. Numerous immunohistochemical, ultrastructural and flow cytometry studies have been carried out for evaluation of prognostic factors which could predict malignant behaviour of these neoplasms. Tumor size of 5 cm and mitosis of 2/10 hpf were suggested as two important parameters which could predict the chances of recurrence and clinically aggressive course. The aim of this study is to examine predictive value of these two important parameters in assigning the tumors as high, intermediate and low risk groups. Using these two parameters we categorized 30 cases of GIST over a period of 6 years (1990-95) into low, intermediate and high risk groups and examined other features of these cases. Based on these two parameters alone we found that 4 cases each in low and intermediate group could be assigned to a higher risk group clinically as there were presence of adjacent organ infiltration, lymphatic emboli, serosal nodules, lymph node metastasis and transmural infiltration. Hence, other features like hemorrhage, necrosis and anaplasia should also be included in risk assessment. Metaplastic tissues like bone, cartilage and adipose tissues were seen only in high-risk categories.
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Katyal R, Rana SV, Ojha S, Vaiphei K, Singh V, Singh K. Soybean trypsin inhibitor confers protection against rotavirus infection in infant mice. TROPICAL GASTROENTEROLOGY : OFFICIAL JOURNAL OF THE DIGESTIVE DISEASES FOUNDATION 2001; 22:207-10. [PMID: 11963327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
OBJECTIVE To study the effects of soybean trypsin inhibitor (TI) on glycine uptake, glutathione (GSH) levels and morphological changes of intestine in rotavirus (RV) infected infant mice. METHODS A total of 144 infant mice (7/8 days old) were divided in 3 groups (i.e. control, RV and RV + inhibitor). Infant mice were orally inoculated with the EB strain of RV and Trypsin protease inhibitor (TI) and 8 animals each were sacrificed on days 0,1,3,5,7 and 10 post infection (p.i). Glycine uptake (in vitro), GSH levels and histological changes were assessed in the jejunum, ileum and colon. RESULTS Glycine uptake and GSH levels were significantly reduced on days 3 and 5 p.i in jejunum and ileum of RV inoculated animals, compared to the controls. Glycine uptake and GSH levels were maintained as in controls in the RV + TI inoculated animals on days 3 and 5 p.i in jejunum and colon but not in ileum where lesser values were recorded. Histology showed vacuolar degeneration in ileum towards the apical portion whereas normal morphology was observed in jejunum, similar to controls. No histological changes were observed in colon in any of the groups. Electron microscopic study confirmed the viral infection. CONCLUSION Administration of Trypsin protease inhibitor along with RV reverted the effects of RV infection on amino acid uptake and GSH levels completely in the jejunum and partially in the ileum.
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Narasimhan KL, Chowdhry SK, Vaiphei K, Samujh R, Mahajan JK, Thapa BR, Rao KL. Outcome of biliary atresia from Chandigarh: results of a prospective analysis. Indian Pediatr 2001; 38:1144-8. [PMID: 11677303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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Nagi B, Verma V, Vaiphei K, Kochhar R, Bhasin D, Singh K. Primary small bowel tumors: a radiologic-pathologic correlation. ABDOMINAL IMAGING 2001; 26:474-80. [PMID: 11503082 DOI: 10.1007/s002610000191] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2000] [Indexed: 10/28/2022]
Abstract
BACKGROUND Primary small bowel tumors are rare and their preoperative diagnosis is unsatisfactory. The cornerstone of diagnosis remains contrast radiography. The present study was done to evaluate the radiologic findings of primary small bowel tumors as shown on enteroclysis and to correlate these observations with surgical and histopathologic findings. METHODS Seventy two patients with primary small bowel tumors identified by enteroclysis were evaluated. All the patients were subjected to jejunal biopsy or surgery. The diagnosis was established by histopathologic examination in all cases. RESULTS Radiologic findings were suggestive of benign tumors in 19 patients and malignant tumors in 31 patients. Nonspecific findings in the form of diffuse involvement of the small bowel were noted in 22 patients. There was 100% radiologic-surgical correlation. Leiomyomas and lymphomas were the most common benign and malignant tumors, respectively. Tumor specificities were 89.5% for benign tumors and 41.5% for malignant tumors. CONCLUSION Distinctive morphologic patterns as shown on enteroclysis are highly suggestive of specific tumor types in the majority of cases.
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Katyal R, Rana S, Vaiphei K, Ojha S, Singh K, Singh V. Influence of soybean trypsin inhibitor on small bowel enzyme activities during rotavirus infection in malnourished infant mice. ANNALS OF NUTRITION & METABOLISM 2001; 44:198-206. [PMID: 11146324 DOI: 10.1159/000046684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Rotavirus (RV) is considered to be one of the major causes of acute episodic diarrhoea throughout the world. This study was undertaken to investigate the effect of soybean trypsin inhibitor (TI) on brush-border enzymes during rotavirus infection in protein energy malnourished (PEM) infant mice. Animals were divided into 4 groups, namely controls, PEM, PEM+RV and PEM+RV+TI (n = 36 each). Group 1 and 2 animals were orally inoculated with 50 microl of normal saline each. Group 3 animals were orally inoculated with 50 microl of 100 ID50 dose of RV stock each. Group 4 animals were similarly inoculated with 0.6 mg TI/g body weight along with 50 microl of RV stock each. Animals were examined daily for diarrhoea and their body weight was recorded on alternate days postinoculation (dpi). Animals were killed by cervical dislocation after being given light chloroform anesthesia on 0, 1, 3, 5, 7 and 10 dpi. Small intestines were excised and homogenized in normal saline. Proteins, gammaglutamyl transpeptidase, alkaline phosphatase and disaccharidases were estimated in jejunum and ileum. Body weight was significantly reduced in PEM animals and with RV infection. Histologically, focal areas of vacuolar degeneration of lining epithelium were seen in RV-infected animals. Disaccharidases and other enzyme activities were decreased significantly in the PEM group compared to healthy controls and further depressed with RV infection in malnourished animals as compared to non-infected PEM. The enzyme activities were restored in animals receiving TI along with RV compared to the group receiving RV without TI. With the administration of soybean TI, the activities of disaccharidases, alkaline phosphatase, gammaglutamyl transpeptidase and intestinal architecture were restored showing a protective effect in PEM during RV infection.
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Bhatnagar A, Wig J, Vaiphei K, Majumdar S. Intracellular cytokines in cells of necrotic tissue from patients with acute pancreatitis. THE EUROPEAN JOURNAL OF SURGERY = ACTA CHIRURGICA 2001; 167:510-7. [PMID: 11560386 DOI: 10.1080/110241501316914885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
OBJECTIVE To determine the alterations in intracellular cytokine responses in necrotic pancreatic tissue obtained on debridement from patients with acute pancreatitis. DESIGN Laboratory study. SETTING Teaching hospital, India. MATERIAL Necrotic tissue obtained at necrosectomy from 34 patients with alcohol-induced or biliary pancreatitis (n = 17 in each) and at autopsy from 12 controls. INTERVENTIONS Histopathological evaluation; measurement of intracellular content of the cytokines interleukin (IL)-2, IL-4, IL-10 and IFN-gamma in CD4+ and CD8+ T lymphocytes and IL-6 and IL-12 in CD14+ monocytes. MAIN OUTCOME MEASURES Intracellular content of the measured cytokines. RESULTS CD4+ and CD8+ T cells and CD14+ monocytes responded to in vitro stimulation of mitogens and synthesised cytokines to varying degrees in the three groups. The heterogeneous cytokine response pattern did not show a typical type 1/type 2 polarised model. CONCLUSIONS This profile suggests that the cells retain the capacity to modulate their phenotype in response to local conditions at the effector site. These results could be taken into consideration when designing new and specific treatments for modifying the immune inflammatory response.
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Katyal R, Rana S, Singh V, Vaiphei K, Ojha S, Singh K. Protection against rotavirus diarrhoea in mice by trypsin inhibitor. INDIAN JOURNAL OF EXPERIMENTAL BIOLOGY 2001; 39:546-50. [PMID: 12562017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
To investigate the role of soyabean trypsin inhibitor (TI) during rotavirus (RV) diarrhoea, changes in enzyme activities of six relevant mucosal enzymes (lactase, sucrase, maltase, trehalase, glucoamylase and alkaline phosphatase) were assayed following inoculation of suckling mice with EB rotavirus (serotype 3) along with the TI and compared with the age-matched healthy control mice. The animals were divided into three groups i.e. group 1 (controls), group 2 (RV inoculated) and group 3 (RV + TI inoculated and sacrificed under light anaesthesia on 0, 1, 3, 5, 7 and 10 day post inoculation (dpi). Then intestines were excised and divided into two parts (jejunum and ileum). They were separately homogenized in 0.9% cold normal saline and activities of mucosal enzyme were measured. Alkaline phosphatase and disaccharidases were found to be decreased significantly in RV inoculated animals in both the anatomical portions of small intestine of mice. These enzyme levels were restored with the administration of TI i.e. in group 3 and became comparable to the controls in both intestinal portions. These studies suggest that activity of intestinal enzymes which are important in digestive absorptive functions of small intestine were restored with the addition of TI whengiven to infant mice showing its protective efficacy during rotavirus infection.
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Wig JD, Vaiphei K, Tashi M, Kochhar R. Isolated gastric tuberculosis presenting as massive hematemesis: report of a case. Surg Today 2001; 30:921-2. [PMID: 11059734 DOI: 10.1007/s005950070046] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Tuberculous involvement of the stomach is rare. We report herein the unusual case of a 25-year-old man in whom a benign gastric ulcer was found along the lesser curvature after he presented with massive upper gastrointestinal bleeding. Histopathological examination helped to confirm a diagnosis of tuberculosis. The granulomas typical of tuberculosis were caseation with epithelioid and giant cells. The patient was successfully treated by a combination of appropriate surgical therapy and prompt institution of antituberculosis medication.
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Kaura D, Bhasin DK, Rana SV, Katyal R, Vaiphei K, Singh K. Alterations in duodenal disaccharidases in chronic smokers. Indian J Gastroenterol 2001; 20:62-3. [PMID: 11305493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To assess the effect of smoking on activity of intestinal disaccharidases. METHODS The study was conducted on patients with non-ulcer dyspepsia who were smokers (n=20) or non-smokers (n=20). Smokers were classified according to smoking index into mild, moderate and heavy smokers. Biopsy specimens were taken from the second part of the duodenum at endoscopy and examined histologically, and for disaccharidase (lactase, sucrase, maltase and trehalase) activities. RESULTS Mean duration of symptoms was more in smokers than in non-smokers. None of the smokers had endoscopic evidence of duodenal inflammation. Lactase and trehalase levels were significantly decreased in smokers. There was no difference in enzyme levels between mild smokers and non-smokers. Decreased lactase, maltase and trehalase activities were observed in moderate smokers compared to mild smokers. Duration of symptoms had no relation to enzyme activities. CONCLUSIONS Intestinal disaccharidase levels are diminished by smoking.
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Katyal R, Rana S, Vaiphei K, Ojha S, Singh V, Singh K. Effect of rotavirus infection on lipid composition and glucose uptake in infant mouse intestine. Indian J Gastroenterol 2001; 20:18-21. [PMID: 11206867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To study the effect of rotavirus infection on lipid composition and glucose uptake in small intestine of infant mice. METHODS Thirty six 7-day old balb/c mice were given 50 mL (100 ID50) rotavirus suspension orally; 36 control animals received only normal saline. Body weight of animals was recorded. Six animals in each group were sacrificed on days 0, 1, 3, 5, 7 and 10 post-inoculation (pi). Intestines were removed, everted and homogenized in ice-cold saline. Cholesterol and phospholipid content, glucose uptake and alkaline phosphatase in the jejunum and ileum were determined. RESULTS Rotavirus infection led to a significant decrease in body weight with on days 3 and 5 pi as compared to controls, and to an increase in cholesterol and phospholipid content of the intestine. Uptake of glucose also increased significantly. Alkaline phosphatase activity was significantly reduced on days 3 and 5 pi as compared to controls. CONCLUSION This study provides characterization of the lipid composition and uptake of glucose in infant mice small intestinal segments during rotavirus infection.
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Singh KD, Bhasin DK, Rana SV, Vaiphei K, Katyal R, Vinayak VK, Singh K. Effect of Giardia lamblia on duodenal disaccharidase levels in humans. TROPICAL GASTROENTEROLOGY : OFFICIAL JOURNAL OF THE DIGESTIVE DISEASES FOUNDATION 2000; 21:174-6. [PMID: 11194577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
The study was conducted to detect the effect of giardiasis on human disaccharidase levels. Forty patients attending the medical outpatient department of PGIMER, Chandigarh were enrolled. Twenty patients, positive for Giardia lamblia comprised the study group while 20 patients negative for Giardia lamblia were taken as controls. Upper gastrointestinal endoscopy was performed in all patients. Estimation of lactase, sucrase, maltase and trehalase was done in biopsies. Histopathological investigation was carried out in all biopsy specimens after Haematoxylin and Eosin staining. Complaints of pain abdomen and bloating occurred commonly in giardiasis. Four biopsy samples in study group showed mild increase in lymphomononuclear infiltrate. Giardia lamblia was detected in 7 biopsies. Lactase levels were decreased significantly (p < 0.05) in giardiasis. Rest of the enzymes were comparable to the controls. No differences in the enzyme activities were observed between males and females in either group and with the duration of symptoms.
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Attri S, Rana SV, Vaiphei K, Sodhi CP, Katyal R, Goel RC, Nain CK, Singh K. Isoniazid- and rifampicin-induced oxidative hepatic injury--protection by N-acetylcysteine. Hum Exp Toxicol 2000; 19:517-22. [PMID: 11204554 DOI: 10.1191/096032700674230830] [Citation(s) in RCA: 87] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The role of N-acetylcysteine (NAC), a glutathione (GSH) precursor, was investigated in protection against isoniazid- (INH) and rifampicin- (RIF) induced oxidative hepatic injury in young Wistar rats. The hepatotoxic dose of INH and RIF was 50 mg kg(-1) day(-1) each and the hepatoprotective dose of NAC was 100 mg kg(-1) day(-1). All drugs were administered intraperitoneally (i.p.) in sterile water (4.0 ml kg(-1) day(-1)) over a period of 3 weeks. Status of oxidative/antioxidative profiles was the mechanistic approach to assess the hepatotoxicity and/or hepatoprotection. The oxidative injury in INH-RIF co-exposed animals was closely associated with significant decline of GSH and related thiols, as well as with compromised antioxidant enzyme system. The oxidative stress was further supported by increased lipid peroxidation observed in these animals. The co-administration of NAC prevented the induction of oxidative stress in INH-RIF co-exposed animals. The amelioration of oxidative stress by NAC was faithfully reflected as normal morphology in these animals, except the presence of mild degree of portal triaditis in one animal co-exposed to INH-RIF and NAC. In contrast, the animals co-exposed to INH-RIF alone showed histological lesions which ranged from intralobular inflammation to patchy necrosis. These results suggest that INH-RIF-induced oxidative injury can be prevented by supporting the cellular antioxidant defense mechanism by NAC.
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Varma N, Vaiphei K, Varma S. Angiosarcoma presenting with leucoerythroblastic anaemia bone marrow fibrosis and massive splenomegaly. Br J Haematol 2000; 110:503. [PMID: 10997958 DOI: 10.1046/j.1365-2141.2000.02333.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nada R, Vaiphei K, Rao KL. Enteric duplication cyst associated with melanosis peritonei. Indian J Gastroenterol 2000; 19:140-1. [PMID: 10918728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Melanosis peritonei is usually associated with benign cystic teratomas of the ovary. We describe a one-and-a-half-year-old girl with melanosis peritonei associated with enteric duplication cyst. Melanophages were seen in aggregates in and around the serosal blood vessels, nerve bundles, and scattered within the muscular wall of the cyst. Presence of hyperplastic nerve bundles associated with melanophages suggests their origin from the neural crest.
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Rajashekhar V, Bhasin DK, Ray P, Vaiphei K, Sharma BC, Singh K. Helicobacter pylori infection in chronic smokers with non ulcer dyspepsia. TROPICAL GASTROENTEROLOGY : OFFICIAL JOURNAL OF THE DIGESTIVE DISEASES FOUNDATION 2000; 21:71-2. [PMID: 10881628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
BACKGROUND/AIMS Both H. pylori infection and smoking are risk factors for acid peptic disorders. There is paucity of data on relationship between smoking and H. pylori infection. Therefore, we studied prevalence of H. pylori infection in smokers with non-ulcer dyspepsia (NUD). PATIENTS AND METHODS 30 smokers with NUD (age 29.5 +/- 1.2 years; all men) and 30 non-smokers with NUD (age 29.2 +/- 1.6 years; all men) were included. None was on antiulcer drugs or antibiotics for more than 2 weeks. Upper gastrointestinal endoscopy was performed and antral biopsies obtained were subjected to rapid urease test, Gram's staining, culture and histopathology. Patient was considered H. pylori positive, if culture was positive or combination of histopathology plus rapid urease test or Gram's staining plus rapid urease test was positive. RESULTS 24 of 30 (80%) smokers and 13 of 30 (43%) non smokers were positive for H. pylori infection (p < 0.001). There was no significant difference in the positivity of H. pylori in light (78%), moderate (81%) and heavy smokers (80%). All the 37 patients who were positive for H. pylori had histological gastritis compared to 65% in H. pylori negative patients. However there was no difference in presence of histological gastritis among H. pylori negative smokers (33%) and non smokers (70%; p = NS). CONCLUSIONS H. pylori infection is more common in smokers with NUD than in non-smokers. However duration and amount of smoking has no relationship with H. pylori positivity.
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