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Lee B, Turner S, Borland M, Csonka P, Grigg J, Guilbert TW, Jartti T, Oommen A, Twynam-Perkins J, Lewis S, Cunningham S. Efficacy of oral corticosteroids for acute preschool wheeze: a systematic review and individual participant data meta-analysis of randomised clinical trials. Lancet Respir Med 2024:S2213-2600(24)00041-9. [PMID: 38527486 DOI: 10.1016/s2213-2600(24)00041-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 02/12/2024] [Accepted: 02/14/2024] [Indexed: 03/27/2024]
Abstract
BACKGROUND Oral corticosteroids are commonly used for acute preschool wheeze, although there is conflicting evidence of their benefit. We assessed the clinical efficacy of oral corticosteroids by means of a systematic review and individual participant data (IPD) meta-analysis. METHODS In this systematic review with IPD meta-analysis, we systematically searched eight databases (PubMed, Ovid Embase, CINAHLplus, CENTRAL, ClinicalTrials.gov, EudraCT, EU Clinical Trials Register, WHO Clinical Trials Registry) for randomised clinical trials published from Jan 1, 1994, to June 30, 2020, comparing oral corticosteroids with placebo in children aged 12 to 71 months with acute preschool wheeze in any setting based on the Population, Intervention, Comparison, Outcomes framework. We contacted principal investigators of eligible studies to obtain deidentified individual patient data. The primary outcome was change in wheezing severity score (WSS). A key secondary outcome length of hospital stay. We also calculated a pooled estimate of six commonly reported adverse events in the follow-up period of IPD datasets. One-stage and two-stage meta-analyses employing a random-effects model were used. This study is registered with PROSPERO, CRD42020193958. FINDINGS We identified 16 102 studies published between Jan 1, 1994, and June 30, 2020, from which there were 12 eligible trials after deduplication and screening. We obtained individual data from seven trials comprising 2172 children, with 1728 children in the eligible IPD age range; 853 (49·4%) received oral corticosteroids (544 [63·8%] male and 309 [36·2%] female) and 875 (50·6%) received placebo (583 [66·6%] male and 292 [33·4%] female). Compared with placebo, a greater change in WSS at 4 h was seen in the oral corticosteroids group (mean difference -0·31 [95% CI -0·38 to -0·24]; p=0·011) but not 12 h (-0·02 [-0·17 to 0·14]; p=0·68), with low heterogeneity between studies (I2=0%; τ2<0·001). Length of hospital stay was significantly reduced in the oral corticosteroids group (-3·18 h [-4·43 to -1·93]; p=0·0021; I2=0%; τ2<0·001). Subgroup analyses showed that this reduction was greatest in those with a history of wheezing or asthma (-4·54 h [-5·57 to -3·52]; pinteraction=0·0007). Adverse events were infrequently reported (four of seven datasets), but oral corticosteroids were associated with an increased risk of vomiting (odds ratio 2·27 [95% CI 0·87 to 5·88]; τ2<0·001). Most datasets (six of seven) had a low risk of bias. INTERPRETATION Oral corticosteroids reduce WSS at 4 h and length of hospital stay in children with acute preschool wheeze. In those with a history of previous wheeze or asthma, oral corticosteroids provide a potentially clinically relevant effect on length of hospital stay. FUNDING Asthma UK Centre for Applied Research.
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Affiliation(s)
- Bohee Lee
- Asthma UK Centre for Applied Research, Centre for Population Health Sciences, University of Edinburgh, Edinburgh, UK.
| | - Steve Turner
- Royal Aberdeen Children's Hospital, NHS Grampian, Aberdeen, UK
| | - Meredith Borland
- Perth Children's Hospital Emergency Department and Divisions of Paediatrics and Emergency Medicine, School of Medicine, University of Western Australia, WA, Australia
| | - Péter Csonka
- Tampere Center for Child, Adolescent and Maternal Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland; Terveystalo Healthcare, Tampere, Finland
| | - Jonathan Grigg
- Centre for Genomics and Child Health, Queen Mary University of London, London, UK
| | - Theresa W Guilbert
- Division of Pulmonology Medicine, Cincinnati Children's Hospital & Medical Center, Department of Pediatrics, University of Cincinnati, Cincinnati, OH, USA
| | - Tuomas Jartti
- Department of Pediatrics, Turku University Hospital and University of Turku, Turku, Finland; PEDEGO Research Unit, University of Oulu, Oulu, Finland; Department of Pediatrics, Oulu University Hospital, Oulu, Finland
| | - Abraham Oommen
- Department of Paediatrics, Milton Keynes University Hospital NHS Trust, Milton Keynes, UK
| | - Jonathan Twynam-Perkins
- Department of Child Life and Health, Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK; Department of Paediatric Respiratory and Sleep Medicine, Royal Hospital for Children and Young People, Edinburgh, UK
| | - Steff Lewis
- Asthma UK Centre for Applied Research, Centre for Population Health Sciences, University of Edinburgh, Edinburgh, UK; Usher Institute, and Edinburgh Clinical Trials Unit, University of Edinburgh, Edinburgh, UK
| | - Steve Cunningham
- Asthma UK Centre for Applied Research, Centre for Population Health Sciences, University of Edinburgh, Edinburgh, UK; Department of Child Life and Health, Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
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Stefko JM, Oommen A, Jones J, Arai L, Dicindio S, Theroux M. Severe Multilevel Tracheal Stenosis with Significant Twisting in a Patient with Spondylometaphyseal Dysplasia: A Case Report. A A Pract 2024; 18:e01759. [PMID: 38411585 DOI: 10.1213/xaa.0000000000001759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Spondylometaphyseal dysplasia (SMD) is a rare genetic disorder affecting skeletal growth and development presenting anesthesiologists with many perioperative challenges. We present a case of a patient found to have multilevel tracheal stenosis due to twisting and folding of his trachea. This was discovered on imaging during a research review of SMD cases at our institution. Structural and functional abnormalities of the trachea have not been reported in SMD. This is the first description of a patient with SMD with severe multilevel tracheal disease requiring tracheal reconstructive surgery.
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Affiliation(s)
- Jordan M Stefko
- From the Department of Anesthesiology, Sidney Kimmel Medical College at Thomas Jefferson University Hospital, Philadelphia, Pennsylvania
| | - Abraham Oommen
- Department of Anesthesiology, Nemours Children's Health, Wilmington, Delaware
| | - Judith Jones
- Department of Anesthesiology, Nemours Children's Health, Wilmington, Delaware
| | - Lynda Arai
- Department of Anesthesiology, Nemours Children's Health, Wilmington, Delaware
| | - Sabina Dicindio
- Department of Anesthesiology, Nemours Children's Health, Wilmington, Delaware
| | - Mary Theroux
- Department of Anesthesiology, Nemours Children's Health, Wilmington, Delaware
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Effects of empagliflozin on progression of chronic kidney disease: a prespecified secondary analysis from the empa-kidney trial. Lancet Diabetes Endocrinol 2024; 12:39-50. [PMID: 38061371 PMCID: PMC7615591 DOI: 10.1016/s2213-8587(23)00321-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Sodium-glucose co-transporter-2 (SGLT2) inhibitors reduce progression of chronic kidney disease and the risk of cardiovascular morbidity and mortality in a wide range of patients. However, their effects on kidney disease progression in some patients with chronic kidney disease are unclear because few clinical kidney outcomes occurred among such patients in the completed trials. In particular, some guidelines stratify their level of recommendation about who should be treated with SGLT2 inhibitors based on diabetes status and albuminuria. We aimed to assess the effects of empagliflozin on progression of chronic kidney disease both overall and among specific types of participants in the EMPA-KIDNEY trial. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA), and included individuals aged 18 years or older with an estimated glomerular filtration rate (eGFR) of 20 to less than 45 mL/min per 1·73 m2, or with an eGFR of 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher. We explored the effects of 10 mg oral empagliflozin once daily versus placebo on the annualised rate of change in estimated glomerular filtration rate (eGFR slope), a tertiary outcome. We studied the acute slope (from randomisation to 2 months) and chronic slope (from 2 months onwards) separately, using shared parameter models to estimate the latter. Analyses were done in all randomly assigned participants by intention to treat. EMPA-KIDNEY is registered at ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and then followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroups of eGFR included 2282 (34·5%) participants with an eGFR of less than 30 mL/min per 1·73 m2, 2928 (44·3%) with an eGFR of 30 to less than 45 mL/min per 1·73 m2, and 1399 (21·2%) with an eGFR 45 mL/min per 1·73 m2 or higher. Prespecified subgroups of uACR included 1328 (20·1%) with a uACR of less than 30 mg/g, 1864 (28·2%) with a uACR of 30 to 300 mg/g, and 3417 (51·7%) with a uACR of more than 300 mg/g. Overall, allocation to empagliflozin caused an acute 2·12 mL/min per 1·73 m2 (95% CI 1·83-2·41) reduction in eGFR, equivalent to a 6% (5-6) dip in the first 2 months. After this, it halved the chronic slope from -2·75 to -1·37 mL/min per 1·73 m2 per year (relative difference 50%, 95% CI 42-58). The absolute and relative benefits of empagliflozin on the magnitude of the chronic slope varied significantly depending on diabetes status and baseline levels of eGFR and uACR. In particular, the absolute difference in chronic slopes was lower in patients with lower baseline uACR, but because this group progressed more slowly than those with higher uACR, this translated to a larger relative difference in chronic slopes in this group (86% [36-136] reduction in the chronic slope among those with baseline uACR <30 mg/g compared with a 29% [19-38] reduction for those with baseline uACR ≥2000 mg/g; ptrend<0·0001). INTERPRETATION Empagliflozin slowed the rate of progression of chronic kidney disease among all types of participant in the EMPA-KIDNEY trial, including those with little albuminuria. Albuminuria alone should not be used to determine whether to treat with an SGLT2 inhibitor. FUNDING Boehringer Ingelheim and Eli Lilly.
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P, Pesce F, Pessolano G, Petchey W, Petr EJ, Pfab T, Phelan P, Phillips R, Phillips T, Phipps M, Piccinni G, Pickett T, Pickworth S, Piemontese M, Pinto D, Piper J, Plummer-Morgan J, Poehler D, Polese L, Poma V, Pontremoli R, Postal A, Pötz C, Power A, Pradhan N, Pradhan R, Preiss D, Preiss E, Preston K, Prib N, Price L, Provenzano C, Pugay C, Pulido R, Putz F, Qiao Y, Quartagno R, Quashie-Akponeware M, Rabara R, Rabasa-Lhoret R, Radhakrishnan D, Radley M, Raff R, Raguwaran S, Rahbari-Oskoui F, Rahman M, Rahmat K, Ramadoss S, Ramanaidu S, Ramasamy S, Ramli R, Ramli S, Ramsey T, Rankin A, Rashidi A, Raymond L, Razali WAFA, Read K, Reiner H, Reisler A, Reith C, Renner J, Rettenmaier B, Richmond L, Rijos D, Rivera R, Rivers V, Robinson H, Rocco M, Rodriguez-Bachiller I, Rodriquez R, Roesch C, Roesch J, Rogers J, Rohnstock M, Rolfsmeier S, Roman M, Romo A, Rosati A, Rosenberg S, Ross T, Rossello X, Roura M, Roussel M, Rovner S, Roy S, Rucker S, Rump L, Ruocco M, Ruse S, Russo F, Russo M, Ryder M, Sabarai A, Saccà C, Sachson R, Sadler E, Safiee NS, Sahani M, Saillant A, Saini J, Saito C, Saito S, Sakaguchi K, Sakai M, Salim H, Salviani C, Sammons E, Sampson A, Samson F, Sandercock P, Sanguila S, Santorelli G, Santoro D, Sarabu N, Saram T, Sardell R, Sasajima H, Sasaki T, Satko S, Sato A, Sato D, Sato H, Sato H, Sato J, Sato T, Sato Y, Satoh M, Sawada K, Schanz M, Scheidemantel F, Schemmelmann M, Schettler E, Schettler V, Schlieper GR, Schmidt C, Schmidt G, Schmidt U, Schmidt-Gurtler H, Schmude M, Schneider A, Schneider I, Schneider-Danwitz C, Schomig M, Schramm T, Schreiber A, Schricker S, Schroppel B, Schulte-Kemna L, Schulz E, Schumacher B, Schuster A, Schwab A, Scolari F, Scott A, Seeger W, Seeger W, Segal M, Seifert L, Seifert M, Sekiya M, Sellars R, Seman MR, Shah S, Shah S, Shainberg L, Shanmuganathan M, Shao F, Sharma K, Sharpe C, Sheikh-Ali M, Sheldon J, Shenton C, Shepherd A, Shepperd M, Sheridan R, Sheriff Z, Shibata Y, Shigehara T, Shikata K, Shimamura K, Shimano H, Shimizu Y, Shimoda H, Shin K, Shivashankar G, Shojima N, Silva R, Sim CSB, Simmons K, Sinha S, Sitter T, Sivanandam S, Skipper M, Sloan K, Sloan L, Smith R, Smyth J, Sobande T, Sobata M, Somalanka S, Song X, Sonntag F, Sood B, Sor SY, Soufer J, Sparks H, Spatoliatore G, Spinola T, Squyres S, Srivastava A, Stanfield J, Staplin N, Staylor K, Steele A, Steen O, Steffl D, Stegbauer J, Stellbrink C, Stellbrink E, Stevens W, Stevenson A, Stewart-Ray V, Stickley J, Stoffler D, Stratmann B, Streitenberger S, Strutz F, Stubbs J, Stumpf J, Suazo N, Suchinda P, Suckling R, Sudin A, Sugamori K, Sugawara H, Sugawara K, Sugimoto D, Sugiyama H, Sugiyama H, Sugiyama T, Sullivan M, Sumi M, Suresh N, Sutton D, Suzuki H, Suzuki R, Suzuki Y, Suzuki Y, Suzuki Y, Swanson E, Swift P, Syed S, Szerlip H, Taal M, Taddeo M, Tailor C, Tajima K, Takagi M, Takahashi K, Takahashi K, Takahashi M, Takahashi T, Takahira E, Takai T, Takaoka M, Takeoka J, Takesada A, Takezawa M, Talbot M, Taliercio J, Talsania T, Tamori Y, Tamura R, Tamura Y, Tan CHH, Tan EZZ, Tanabe A, Tanabe K, Tanaka A, Tanaka A, Tanaka N, Tang S, Tang Z, Tanigaki K, Tarlac M, Tatsuzawa A, Tay JF, Tay LL, Taylor J, Taylor K, Taylor K, Te A, Tenbusch L, Teng KS, Terakawa A, Terry J, Tham ZD, Tholl S, Thomas G, Thong KM, Tietjen D, Timadjer A, Tindall H, Tipper S, Tobin K, Toda N, Tokuyama A, Tolibas M, Tomita A, Tomita T, Tomlinson J, Tonks L, Topf J, Topping S, Torp A, Torres A, Totaro F, Toth P, Toyonaga Y, Tripodi F, Trivedi K, Tropman E, Tschope D, Tse J, Tsuji K, Tsunekawa S, Tsunoda R, Tucky B, Tufail S, Tuffaha A, Turan E, Turner H, Turner J, Turner M, Tuttle KR, Tye YL, Tyler A, Tyler J, Uchi H, Uchida H, Uchida T, Uchida T, Udagawa T, Ueda S, Ueda Y, Ueki K, Ugni S, Ugwu E, Umeno R, Unekawa C, Uozumi K, Urquia K, Valleteau A, Valletta C, van Erp R, Vanhoy C, Varad V, Varma R, Varughese A, Vasquez P, Vasseur A, Veelken R, Velagapudi C, Verdel K, Vettoretti S, Vezzoli G, Vielhauer V, Viera R, Vilar E, Villaruel S, Vinall L, Vinathan J, Visnjic M, Voigt E, von-Eynatten M, Vourvou M, Wada J, Wada J, Wada T, Wada Y, Wakayama K, Wakita Y, Wallendszus K, Walters T, Wan Mohamad WH, Wang L, Wang W, Wang X, Wang X, Wang Y, Wanner C, Wanninayake S, Watada H, Watanabe K, Watanabe K, Watanabe M, Waterfall H, Watkins D, Watson S, Weaving L, Weber B, Webley Y, Webster A, Webster M, Weetman M, Wei W, Weihprecht H, Weiland L, Weinmann-Menke J, Weinreich T, Wendt R, Weng Y, Whalen M, Whalley G, Wheatley R, Wheeler A, Wheeler J, Whelton P, White K, Whitmore B, Whittaker S, Wiebel J, Wiley J, Wilkinson L, Willett M, Williams A, Williams E, Williams K, Williams T, Wilson A, Wilson P, Wincott L, Wines E, Winkelmann B, Winkler M, Winter-Goodwin B, Witczak J, Wittes J, Wittmann M, Wolf G, Wolf L, Wolfling R, Wong C, Wong E, Wong HS, Wong LW, Wong YH, Wonnacott A, Wood A, Wood L, Woodhouse H, Wooding N, Woodman A, Wren K, Wu J, Wu P, Xia S, Xiao H, Xiao X, Xie Y, Xu C, Xu Y, Xue H, Yahaya H, Yalamanchili H, Yamada A, Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Impact of primary kidney disease on the effects of empagliflozin in patients with chronic kidney disease: secondary analyses of the EMPA-KIDNEY trial. Lancet Diabetes Endocrinol 2024; 12:51-60. [PMID: 38061372 DOI: 10.1016/s2213-8587(23)00322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The EMPA-KIDNEY trial showed that empagliflozin reduced the risk of the primary composite outcome of kidney disease progression or cardiovascular death in patients with chronic kidney disease mainly through slowing progression. We aimed to assess how effects of empagliflozin might differ by primary kidney disease across its broad population. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA). Patients were eligible if their estimated glomerular filtration rate (eGFR) was 20 to less than 45 mL/min per 1·73 m2, or 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher at screening. They were randomly assigned (1:1) to 10 mg oral empagliflozin once daily or matching placebo. Effects on kidney disease progression (defined as a sustained ≥40% eGFR decline from randomisation, end-stage kidney disease, a sustained eGFR below 10 mL/min per 1·73 m2, or death from kidney failure) were assessed using prespecified Cox models, and eGFR slope analyses used shared parameter models. Subgroup comparisons were performed by including relevant interaction terms in models. EMPA-KIDNEY is registered with ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroupings by primary kidney disease included 2057 (31·1%) participants with diabetic kidney disease, 1669 (25·3%) with glomerular disease, 1445 (21·9%) with hypertensive or renovascular disease, and 1438 (21·8%) with other or unknown causes. Kidney disease progression occurred in 384 (11·6%) of 3304 patients in the empagliflozin group and 504 (15·2%) of 3305 patients in the placebo group (hazard ratio 0·71 [95% CI 0·62-0·81]), with no evidence that the relative effect size varied significantly by primary kidney disease (pheterogeneity=0·62). The between-group difference in chronic eGFR slopes (ie, from 2 months to final follow-up) was 1·37 mL/min per 1·73 m2 per year (95% CI 1·16-1·59), representing a 50% (42-58) reduction in the rate of chronic eGFR decline. This relative effect of empagliflozin on chronic eGFR slope was similar in analyses by different primary kidney diseases, including in explorations by type of glomerular disease and diabetes (p values for heterogeneity all >0·1). INTERPRETATION In a broad range of patients with chronic kidney disease at risk of progression, including a wide range of non-diabetic causes of chronic kidney disease, empagliflozin reduced risk of kidney disease progression. Relative effect sizes were broadly similar irrespective of the cause of primary kidney disease, suggesting that SGLT2 inhibitors should be part of a standard of care to minimise risk of kidney failure in chronic kidney disease. FUNDING Boehringer Ingelheim, Eli Lilly, and UK Medical Research Council.
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Theroux MC, DiCindio S, Averill LW, Pizarro C, Oommen A, Bober MB, Ditro C, Campbell J, Duker AL, Jones T, Passi V, Barth P, Schmidt RJ, Little M, Mackenzie S, Tomatsu S, Mackenzie WG. Tracheal Narrowing and Its Impact on Anesthesia Care in Patients With Morquio A (Mucopolysaccharidosis Type IVA): An Observational Study. Anesth Analg 2023; 137:1075-1083. [PMID: 37862598 PMCID: PMC10634225 DOI: 10.1213/ane.0000000000006513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
BACKGROUND Recently, tracheal narrowing has been recognized as a significant comorbid condition in patients with Morquio A, also known as mucopolysaccharidosis IVA. We studied a large cohort of patients with Morquio A to describe the extent of their tracheal narrowing and its relationship to airway management during anesthesia care. METHODS This is an observational study, collecting data retrospectively, of a cohort of patients with Morquio A. Ninety-two patients with Morquio A syndrome were enrolled, among whom 44 patients had their airway evaluated by computed tomography angiography and had undergone an anesthetic within a year of the evaluation. Our hypothesis was that the tracheal narrowing as evaluated by computed tomography angiography increases with age in patients with Morquio A. The primary aim of the study was to examine the degree of tracheal narrowing in patients with Morquio A and describe the difficulties encountered during airway management, thus increasing awareness of both the tracheal narrowing and airway management difficulties in this patient population. In addition, the degree of tracheal narrowing was evaluated for its association with age or spirometry parameters using Spearman's rank correlation. Analysis of variance followed by the Bonferroni test was used to further examine the age-based differences in tracheal narrowing for the 3 age groups: 1 to 10 years, 11 to 20 years, and >21 years. RESULTS Patient age showed a positive correlation with tracheal narrowing ( rs= 0.415; 95% confidence interval [95% CI], 0.138-0.691; P = .005) with older patients having greater narrowing of the trachea. Among spirometry parameters, FEF25%-75% showed an inverse correlation with tracheal narrowing as follows: FEF25%-75% versus tracheal narrowing: ( rs = -0.467; 95% CI, -0.877 to -0.057; P = .007). During anesthetic care, significant airway management difficulties were encountered, including cancelation of surgical procedures, awake intubation using flexible bronchoscope, and failed video laryngoscopy attempts. CONCLUSIONS Clinically significant tracheal narrowing was present in patients with Morquio A, and the degree of such narrowing likely contributed to the difficulty with airway management during their anesthetic care. Tracheal narrowing worsens with age, but the progression appears to slow down after 20 years of age. In addition to tracheal narrowing, spirometry values of FEF25%-75% may be helpful in the overall evaluation of the airway in patients with Morquio A.
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Affiliation(s)
- Mary C. Theroux
- Department of Anesthesiology and Perioperative Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Sabina DiCindio
- Department of Anesthesiology and Perioperative Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Lauren W. Averill
- Department of Radiology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Christian Pizarro
- Division of Cardiology and Cardiothoracic Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Abraham Oommen
- Department of Anesthesiology and Perioperative Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Michael B. Bober
- Division of Genetics, Thomas Jefferson University, Philadelphia, PA, USA
| | - Colleen Ditro
- Department of Orthopedics, Thomas Jefferson University, Philadelphia, PA, USA
| | - Jeffrey Campbell
- Division of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Angela L. Duker
- Division of Genetics, Thomas Jefferson University, Philadelphia, PA, USA
| | - Taylor Jones
- Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, PA, USA
| | - Vandna Passi
- Division of Pulmonology, Nemours Children’s Health Delaware Valley, Wilmington, DE, USA
| | - Patrick Barth
- Division of Otolaryngology, Nemours Children’s Health Delaware Valley, Wilmington, DE, USA
| | - Richard J. Schmidt
- Division of Otolaryngology, Nemours Children’s Health Delaware Valley, Wilmington, DE, USA
| | - Mary Little
- Department of Orthopedics, Thomas Jefferson University, Philadelphia, PA, USA
| | - Stuart Mackenzie
- Department of Orthopedics, Thomas Jefferson University, Philadelphia, PA, USA
| | - Shunji Tomatsu
- Nemours Biomedical Research, Nemours Children’s Health Delaware Valley, Wilmington, DE, USA
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Nadarajah R, Ludman P, Appelman Y, Brugaletta S, Budaj A, Bueno H, Huber K, Kunadian V, Leonardi S, Lettino M, Milasinovic D, Gale CP, Budaj A, Dagres N, Danchin N, Delgado V, Emberson J, Friberg O, Gale CP, Heyndrickx G, Iung B, James S, Kappetein AP, Maggioni AP, Maniadakis N, Nagy KV, Parati G, Petronio AS, Pietila M, Prescott E, Ruschitzka F, Van de Werf F, Weidinger F, Zeymer U, Gale CP, Beleslin B, Budaj A, Chioncel O, Dagres N, Danchin N, Emberson J, Erlinge D, Glikson M, Gray A, Kayikcioglu M, Maggioni AP, Nagy KV, Nedoshivin A, Petronio AP, Roos-Hesselink JW, Wallentin L, Zeymer U, Popescu BA, Adlam D, Caforio ALP, Capodanno D, Dweck M, Erlinge D, Glikson M, Hausleiter J, Iung B, Kayikcioglu M, Ludman P, Lund L, Maggioni AP, Matskeplishvili S, Meder B, Nagy KV, Nedoshivin A, Neglia D, Pasquet AA, Roos-Hesselink JW, Rossello FJ, Shaheen SM, Torbica A, Gale CP, Ludman PF, Lettino M, Bueno H, Huber K, Leonardi S, Budaj A, Milasinovic (Serbia) D, Brugaletta S, Appelman Y, Kunadian V, Al Mahmeed WAR, Kzhdryan H, Dumont C, Geppert A, Bajramovic NS, Cader FA, Beauloye C, Quesada D, Hlinomaz O, Liebetrau C, Marandi T, Shokry K, Bueno H, Kovacevic M, Crnomarkovic B, Cankovic M, Dabovic D, Jarakovic M, Pantic T, Trajkovic M, Pupic L, Ruzicic D, Cvetanovic D, Mansourati J, Obradovic I, Stankovic M, Loh PH, Kong W, Poh KK, Sia CH, Saw K, Liška D, Brozmannová D, Gbur M, Gale CP, Maxian R, Kovacic D, Poznic NG, Keric T, Kotnik G, Cercek M, Steblovnik K, Sustersic M, Cercek AC, Djokic I, Maisuradze D, Drnovsek B, Lipar L, Mocilnik M, Pleskovic A, Lainscak M, Crncic D, Nikojajevic I, Tibaut M, Cigut M, Leskovar B, Sinanis T, Furlan T, Grilj V, Rezun M, Mateo VM, Anguita MJF, Bustinza ICM, Quintana RB, Cimadevilla OCF, Fuertes J, Lopez F, Dharma S, Martin MD, Martinez L, Barrabes JA, Bañeras J, Belahnech Y, Ferreira-Gonzalez I, Jordan P, Lidon RM, Mila L, Sambola A, Orvin K, Sionis A, Bragagnini W, Cambra AD, Simon C, Burdeus MV, Ariza-Solé A, Alegre O, Alsina M, Ferrando JIL, Bosch X, Sinha A, Vidal P, Izquierdo M, Marin F, Esteve-Pastor MA, Tello-Montoliu A, Lopez-Garcia C, Rivera-Caravaca JM, Gil-Pérez P, Nicolas-Franco S, Keituqwa I, Farhan HA, Silva L, Blasco A, Escudier JM, Ortega J, Zamorano JL, Sanmartin M, Pereda DC, Rincon LM, Gonzalez P, Casado T, Sadeghipour P, Lopez-Sendon JL, Manjavacas AMI, Marin LAM, Sotelo LR, Rodriguez SOR, Bueno H, Martin R, Maruri R, Moreno G, Moris C, Gudmundsdottir I, Avanzas P, Ayesta A, Junco-Vicente A, Cubero-Gallego H, Pascual I, Sola NB, Rodriguez OA, Malagon L, Martinez-Basterra J, Arizcuren AM, Indolfi C, Romero J, Calleja AG, Fuertes DG, Crespín Crespín M, Bernal FJC, Ojeda FB, Padron AL, Cabeza MM, Vargas CM, Yanes G, Kitai T, Gonzalez MJG, Gonzalez Gonzalez J, Jorge P, De La Fuente B, Bermúdez MG, Perez-Lopez CMB, Basiero AB, Ruiz AC, Pamias RF, Chamero PS, Mirrakhimov E, Hidalgo-Urbano R, Garcia-Rubira JC, Seoane-Garcia T, Arroyo-Monino DF, Ruiz AB, Sanz-Girgas E, Bonet G, Rodríguez-López J, Scardino C, De Sousa D, Gustiene O, Elbasheer E, Humida A, Mahmoud H, Mohamed A, Hamid E, Hussein S, Abdelhameed M, Ali T, Ali Y, Eltayeb M, Philippe F, Ali M, Almubarak E, Badri M, Altaher S, Alla MD, Dellborg M, Dellborg H, Hultsberg-Olsson G, Marjeh YB, Abdin A, Erglis A, Alhussein F, Mgazeel F, Hammami R, Abid L, Bahloul A, Charfeddine S, Ellouze T, Canpolat U, Oksul M, Muderrisoglu H, Popovici M, Karacaglar E, Akgun A, Ari H, Ari S, Can V, Tuncay B, Kaya H, Dursun L, Kalenderoglu K, Tasar O, Kalpak O, Kilic S, Kucukosmanoglu M, Aytekin V, Baydar O, Demirci Y, Gürsoy E, Kilic A, Yildiz Ö, Arat-Ozkan A, Sinan UY, Dagva M, Gungor B, Sekerci SS, Zeren G, Erturk M, Demir AR, Yildirim C, Can C, Kayikcioglu M, Yagmur B, Oney S, Xuereb RG, Sabanoglu C, Inanc IH, Ziyrek M, Sen T, Astarcioglu MA, Kahraman F, Utku O, Celik A, Surmeli AO, Basaran O, Ahmad WAW, Demirbag R, Besli F, Gungoren F, Ingabire P, Mondo C, Ssemanda S, Semu T, Mulla AA, Atos JS, Wajid I, Appelman Y, Al Mahmeed WAR, Atallah B, Bakr 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Potpara T, Marinkovic M, Mihajlovic M, Mujovic N, Kocijancic A, Mijatovic Z, Radovanovic M, Matic D, Milosevic A, Savic L, Subotic I, Uscumlic A, Zlatic N, Antonijevic J, Vesic O, Vucic R, Martinovic SS, Kostic T, Atanaskovic V, Mitic V, Stanojevic D, Petrovic M. Cohort profile: the ESC EURObservational Research Programme Non-ST-segment elevation myocardial infraction (NSTEMI) Registry. Eur Heart J Qual Care Clin Outcomes 2022; 9:8-15. [PMID: 36259751 DOI: 10.1093/ehjqcco/qcac067] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 10/11/2022] [Indexed: 11/12/2022]
Abstract
AIMS The European Society of Cardiology (ESC) EURObservational Research Programme (EORP) Non-ST-segment elevation myocardial infarction (NSTEMI) Registry aims to identify international patterns in NSTEMI management in clinical practice and outcomes against the 2015 ESC Guidelines for the management of acute coronary syndromes in patients presenting without ST-segment-elevation. METHODS AND RESULTS Consecutively hospitalised adult NSTEMI patients (n = 3620) were enrolled between 11 March 2019 and 6 March 2021, and individual patient data prospectively collected at 287 centres in 59 participating countries during a two-week enrolment period per centre. The registry collected data relating to baseline characteristics, major outcomes (in-hospital death, acute heart failure, cardiogenic shock, bleeding, stroke/transient ischaemic attack, and 30-day mortality) and guideline-recommended NSTEMI care interventions: electrocardiogram pre- or in-hospital, pre-hospitalization receipt of aspirin, echocardiography, coronary angiography, referral to cardiac rehabilitation, smoking cessation advice, dietary advice, and prescription on discharge of aspirin, P2Y12 inhibition, angiotensin converting enzyme inhibitor (ACEi)/angiotensin receptor blocker (ARB), beta-blocker, and statin. CONCLUSION The EORP NSTEMI Registry is an international, prospective registry of care and outcomes of patients treated for NSTEMI, which will provide unique insights into the contemporary management of hospitalised NSTEMI patients, compliance with ESC 2015 NSTEMI Guidelines, and identify potential barriers to optimal management of this common clinical presentation associated with significant morbidity and mortality.
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Affiliation(s)
- Ramesh Nadarajah
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, LS2 9JT Leeds, UK.,Leeds Institute of Data Analytics, University of Leeds, LS2 9JT Leeds, UK.,Department of Cardiology, Leeds Teaching Hospitals NHS Trust, LS1 3EX Leeds, UK
| | - Peter Ludman
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK
| | - Yolande Appelman
- Department of Cardiology, Amsterdam UMC-Vrije Universiteit, Amsterdam Cardiovascular Sciences, Amsterdam, Netherlands
| | - Salvatore Brugaletta
- Hospital Clinic de Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | - Andrzej Budaj
- Department of Cardiology, Center of Postgraduate Medical Education, Grochowski Hospital, Warsaw, Poland
| | - Hector Bueno
- Cardiology Department, Hospital Universitario 12 de Octubre and Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain.,Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain.,Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - Kurt Huber
- 3rd Medical Department, Cardiology and Intensive Care Medicine, Clinic Ottakring (Wilhelminenhospital), Vienna, Austria.,Medical Faculty, Sigmund Freud University, Vienna, Austria
| | - Vijay Kunadian
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK.,Cardiothoracic Centre, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Sergio Leonardi
- University of Pavia, Pavia, Italy.,Fondazione IRCCS Policlinico S.Matteo, Pavia, Italy
| | - Maddalena Lettino
- Cardio-Thoracic and Vascular Department, San Gerardo Hospital, ASST-Monza, Monza, Italy
| | - Dejan Milasinovic
- Department of Cardiology, University Clinical Center of Serbia and Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Chris P Gale
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, LS2 9JT Leeds, UK.,Leeds Institute of Data Analytics, University of Leeds, LS2 9JT Leeds, UK.,Department of Cardiology, Leeds Teaching Hospitals NHS Trust, LS1 3EX Leeds, UK
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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7
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Georgy J, Singh A, Oommen A, Joel A, Manipadam M, Abraham D, Paul M, Backianathan S, Chacko R. 261P A novel dose-dense alternating regimen of Docetaxel-Cyclophosphamide with Epirubicin-Cisplatin (ddDCEP) as neoadjuvant chemotherapy (NACT) for high-risk triple-negative breast cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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8
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Thambisetty M, Varma V, An Y, Mahajan U, Oommen A, Varma S, Troncoso J, Pletnikova O, Legido-Quigley C. The new neurobiology of dementia. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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9
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Tharmalingam J, Prabhakar AT, Gangadaran P, Dorny P, Vercruysse J, Geldhof P, Rajshekhar V, Alexander M, Oommen A. Host Th1/Th2 immune response to Taenia solium cyst antigens in relation to cyst burden of neurocysticercosis. Parasite Immunol 2017; 38:628-34. [PMID: 27493081 DOI: 10.1111/pim.12351] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 08/02/2016] [Indexed: 01/02/2023]
Abstract
Neurocysticercosis (NCC), Taenia solium larval infection of the brain, is an important cause of acquired seizures in endemic countries, which relate to number, location and degenerating cysts in the brain. Multicyst infections are common in endemic countries although single-cyst infection prevails in India. Single-cyst infections in an endemic country suggest a role for host immunity limiting the infection. This study examined ex vivo CD4(+) T cells and in vitro Th1 and Th2 cytokine responses to T. solium cyst antigens of peripheral blood mononuclear cells of healthy subjects from endemic and nonendemic regions and of single- and multicyst-infected patients for association with cyst burden of NCC. T. solium cyst antigens elicited a Th1 cytokine response in healthy subjects of T. solium-endemic and T. solium-non-endemic regions and those with single-cyst infections and a Th2 cytokine response from subjects with multicyst neurocysticercosis. Multicyst neurocysticercosis subjects also exhibited low levels of effector memory CD4(+) T cells. Th1 cytokine response of T. solium exposure and low infectious loads may aid in limiting cyst number. Th2 cytokines and low effector T cells may enable multiple-cyst infections to establish and persist.
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Affiliation(s)
- J Tharmalingam
- Department of Neurological Sciences, Christian Medical College, Vellore, Tamil Nadu, India. ,
| | - A T Prabhakar
- Department of Neurological Sciences, Christian Medical College, Vellore, Tamil Nadu, India
| | - P Gangadaran
- Department of Neurological Sciences, Christian Medical College, Vellore, Tamil Nadu, India
| | - P Dorny
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium.,Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - J Vercruysse
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - P Geldhof
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - V Rajshekhar
- Department of Neurological Sciences, Christian Medical College, Vellore, Tamil Nadu, India
| | - M Alexander
- Department of Neurological Sciences, Christian Medical College, Vellore, Tamil Nadu, India
| | - A Oommen
- Department of Neurological Sciences, Christian Medical College, Vellore, Tamil Nadu, India
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10
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Mohan VR, Tharmalingam J, Muliyil J, Oommen A, Dorny P, Vercruysse J, Vedantam R. Prevalence of porcine cysticercosis in Vellore, South India. Trans R Soc Trop Med Hyg 2012; 107:62-4. [DOI: 10.1093/trstmh/trs003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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11
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Raghupathy V, Poornima S, Sivaguru J, Ramachandran A, Zachariah A, Oommen A. Monocrotophos toxicity and bioenergetics of muscle weakness in the rat. Toxicology 2010; 277:6-10. [DOI: 10.1016/j.tox.2010.08.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Revised: 08/13/2010] [Accepted: 08/13/2010] [Indexed: 11/28/2022]
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12
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Raghava MV, Prabhakaran V, Jayaraman T, Muliyil J, Oommen A, Dorny P, Vercruysse J, Rajshekhar V. Detecting spatial clusters of Taenia solium infections in a rural block in South India. Trans R Soc Trop Med Hyg 2010; 104:601-12. [DOI: 10.1016/j.trstmh.2010.06.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Revised: 06/11/2010] [Accepted: 06/11/2010] [Indexed: 10/19/2022] Open
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13
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Venkatesh S, Ramachandran A, Zachariah A, Oommen A. Mitochondrial ATP synthase inhibition and nitric oxide are involved in muscle weakness that occurs in acute exposure of rats to monocrotophos. Toxicol Mech Methods 2010; 19:239-45. [PMID: 19730754 PMCID: PMC2736536 DOI: 10.1080/15376510802455354] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Organophosphate poisoning in the context of self-harm is a common medical emergency in Asia. Prolonged muscle weakness is an important but poorly understood cause of morbidity and mortality of the poisoning. This study examined mitochondrial function and its modulation by nitric oxide in muscle weakness of rats exposed to an acute, oral (0.8LD(50)) dose of monocrotophos. Muscle mitochondrial ATP synthase activity was inhibited in the rat in acute exposure to monocrotophos while respiration per se was not affected. This was accompanied by decreased mitochondrial uptake of calcium and increased levels of nitric oxide. Reactive cysteine groups of ATP synthase subunits were reduced in number, which may contribute to decreased enzyme activity. The decrease in ATP synthase activity and reactive cysteine groups of ATP synthase subunits was prevented by treatment of animals with the nitric oxide synthase inhibitor, L-N(G) Nitroarginine methyl ester, at 12 mg/kg body weight for 9 days in drinking water, prior to monocrotophos exposure. This indicated a role for nitric oxide in the process. The alterations in mitochondrial calcium uptake may influence cytosolic calcium levels and contribute to muscle weakness of acute organophosphate exposure.
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Affiliation(s)
- S Venkatesh
- Department of Neurological Sciences, Christian Medical College, Vellore, India
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14
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Oommen A, Vatsa M, Paul VK, Aggarwal R. Breastfeeding practices of urban and rural mothers. Indian Pediatr 2009; 46:891-894. [PMID: 19430079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2008] [Accepted: 09/09/2008] [Indexed: 05/27/2023]
Abstract
This longitudinal study was conducted to describe the prevalence of exclusive breastfeeding and factors influencing it in urban (tertiary care hospital of Delhi) and rural (First Referral Unit in Haryana) settings. The exclusive breastfeeding rates were 38%, 30%, 24%, 20%, 16% and 1% at discharge, 1.5, 2.5, 3.5, 4.5 and 6 months, respectively in the urban and; 57%, 16%, 9%, 6%, 5% and 0% at discharge, 1.5, 2.5, 3.5, 4.5 and 6 months, respectively in rural setting. Use of formula feeding was very high (55%) among the urban mothers during hospital stay. The factors associated with continuation of exclusive breastfeeding were mothers knowledge regarding breastfeeding and reinforcement by health professionals, whereas the factors associated with cessation were perceived insufficiency of milk, and cultural practices.
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Affiliation(s)
- A Oommen
- College of Nursing and Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
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15
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Abstract
OBJECTIVE To determine the contribution of neurocysticercosis (NCC) to the causation of active epilepsy (AE) in a south Indian community. METHODS We conducted a door-to-door survey of 50,617 people between the ages of 2 and 60 years in a rural (38,105 people) and urban setting (12,512 people) in the Vellore district of the south Indian state of Tamil Nadu to identify patients with AE. Patients with AE were investigated with a contrast-enhanced CT scan and serologic study using enzyme-linked immunotransfer blot (EITB) for cysticercal antibodies. RESULTS We identified 194 patients with AE. The prevalence of AE was 3.83 per 1,000 people, with the prevalence in the urban clusters more than twice that in the rural clusters (6.23 vs 3.04 per 1,000) (p < 0.0001). A diagnosis of NCC was made in 46 (28.4%) of the 162 patients undergoing a CT scan, and EITB was positive in 21 (13%) patients. Overall, 55 (34%) patients were diagnosed with NCC (11 definitive NCC and 44 probable NCC). There was no significant difference in the prevalence of NCC causing AE in the urban (1.28 per 1,000) and rural (1.02 per 1,000) communities. CONCLUSIONS NCC is the cause of nearly one-third of all cases of AE in both the urban and rural regions. Extrapolating our results to the country as a whole leads to an estimated disease burden of 1 million patients in India with AE attributable to NCC.
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Affiliation(s)
- V Rajshekhar
- Department of Neurological Sciences, Christian Medical College, Vellore 632 004, India.
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Prabhakaran V, Rajshekhar V, Oommen A. N-glycans govern the innate immune response in neurocysticercosis. Neurosci Res 2007. [DOI: 10.1016/j.neures.2007.06.1379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Venkatesh S, Kavitha ML, Zachariah A, Oommen A. Progression of Type I to Type II paralysis in acute organophosphorous poisoning: Is oxidative stress significant? Arch Toxicol 2005; 80:354-61. [PMID: 16374596 DOI: 10.1007/s00204-005-0053-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2005] [Accepted: 11/14/2005] [Indexed: 11/26/2022]
Abstract
Organophosphorous poisoning is a common method of deliberate self-harm in countries where the pesticides are readily available and can result in type I, II and/or III paralysis. The in-hospital morbidity and mortality of the poisoning are mostly associated with type II paralysis (intermediate syndrome). The aim of this study was to determine the role of oxidative stress in relation to the severity of poisoning and development of type II paralysis in patients suffering from acute organophosphate poisoning. This prospective study was carried out at the Christian Medical College Hospital. Thirty-two patients with acute organophosphorous poisoning, admitted in one medical unit over 17 months, were included in the study. They were clinically assessed for severity of poisoning and paralysis during the first 10 days of their hospitalisation. Temporal profiles of butyrylcholinesterase (BuChE) and oxidative stress parameters, for 4, 7 and 10 days of hospitalisation, were established in 25 of these patients. Type I and II paralysis were associated with severe poisoning. The majority of patients with type II paralysis had prior evidence of type I paralysis. The pattern of muscles that were paralysed in type I paralysis occurring alone and in type I paralysis proceeding to type II paralysis were similar. BuChE was significantly inhibited in all patients. Oxidative stress occurred in acute organophosphate poisoned patients and was greater in severe poisoning. The results suggest that type I paralysis may progress to type II paralysis in severely poisoned patients. They demonstrate early occurrence of oxidative stress in severe acute organophosphate poisoning. However, the development of type II paralysis is not associated with the level of oxidative stress. They suggest that mechanisms other than acetylcholine induced oxidative stress may be involved in the progression of type I to type II paralysis.
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Affiliation(s)
- S Venkatesh
- Neurochemistry Laboratory, Department of Neurological Sciences, Christian Medical College, 632 004 Vellore, India.
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18
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Abstract
Progressive hepatocellular dysfunction in a neonate, resulting in elevated serum alpha-fetoprotein together with raised blood levels of tyrosine and methionine, a generalized amino aciduria and the absence of urinary delta-aminolevulinic acid and succinylacetone, suggests a diagnosis of tyrosinemia type Ib. Classical tyrosinemia type I arises from a deficiency of fumarylacetoacetate hydrolase while the variant tyrosinemia type Ib results from a deficiency of maleylacetoacetate isomerase.
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Prabhakaran V, Rajshekhar V, Murrell KD, Oommen A. Taenia solium metacestode glycoproteins as diagnostic antigens for solitary cysticercus granuloma in Indian patients. Trans R Soc Trop Med Hyg 2004; 98:478-84. [PMID: 15186936 DOI: 10.1016/j.trstmh.2003.12.006] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2003] [Revised: 11/20/2003] [Accepted: 12/02/2003] [Indexed: 10/26/2022] Open
Abstract
Taenia solium metacestode glycoproteins specific for lentil lectin were evaluated as diagnostic antigens for solitary cysticercus granulomas in Indian patients, using both an ELISA and immunoblotting. In 250 patients suspected to have neurocysticercosis and subjected to a computerized tomography scan or magnetic resonance imaging, the proteins were diagnostic by the ELISA in 86 patients (80%) and by immunoblots in 67 (62%) of 107 patients with solitary cysticerus granuloma. Among 100 non-cysticercosis patients, the ELISA and immunoblot were negative in 94% and 97% respectively. No cross-reactions were observed with sera from patients with central nervous system tuberculosis. Proteins of </=18 kDa were the most diagnostic for solitary cysticercus granuloma.
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Affiliation(s)
- V Prabhakaran
- Department of Neurological Sciences, Christian Medical College, Vellore 632004, India
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20
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Karnik D, Thomas N, Jacob J, Oommen A. Hyperammonemia with citrullinemia. Indian Pediatr 2004; 41:842-4. [PMID: 15347874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
Two cases of hyperammonemia with elevated citrulline are reported, one resulting from a deficiency of pyruvate carboxylase and the other from a partial deficiency of argininosuccinate synthetase. Diagnosis was based on clinical, biochemical and amino acid profiles. The utility of amino acid determinations in hyperammonemia suspected to underlie an inborn error of metabolism is emphasized.
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Affiliation(s)
- D Karnik
- Department of Neurological Sciences, Christian Medical College Hospital, Vellore, India
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Abstract
BACKGROUND Episodic wheeze triggered by viral colds is common in children aged between 1 and 5 years (preschool viral wheeze). Most affected children are asymptomatic by age 6 years. Persistence of wheeze is associated with above-average systemic eosinophil priming. Use of parental-initiated oral prednisolone is recommended at the first sign of preschool viral wheeze. However, evidence for this treatment strategy is conflicting. We therefore aimed to assess the efficacy of a short course of oral prednisolone for preschool viral wheeze, with stratification for systemic eosinophil priming. METHODS Children aged 1-5 years admitted to hospital with viral wheeze were allocated to either a high-primed or low-primed stratum according to amounts of serum eosinophil cationic protein and eosinophil protein X, and randomised to parent-initiated prednisolone (20 mg one daily for 5 days) or placebo for the next episode. The primary outcomes were the 7-day mean daytime and night-time respiratory symptom scores, which were analysed by mean differences between treatment groups. FINDINGS 108 children were randomised to placebo and 109 to prednisolone. Outcome data were available for 120 (78%) of 153 children who had a further episode of viral wheeze, of whom 51 received prednisolone and 69 placebo. Mean daytime (difference in means -0.01 [-0.22 to 0.20]) and night-time (0.10 [-0.12 to 0.32]) respiratory symptom scores and need for hospital admission did not differ between treatment groups. Within the high-primed (n=59) and low-primed (n=61) strata there was no difference in primary outcome between treatment groups. INTERPRETATION There is no clear benefit of a short course of parent-initiated oral prednisolone for viral wheeze in children aged 1-5 years even in those with above-average eosinophil priming.
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Affiliation(s)
- Abraham Oommen
- Leicester Children's Asthma Centre, Institute for Lung Health, University of Leicester, Leicester, UK
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22
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Abstract
BACKGROUND A study was undertaken to ascertain whether systemic eosinophil activation is associated with preschool viral wheeze (PVW). METHODS Urinary eosinophil protein X (uEPX) and serum total IgE (IgE) levels were measured in children admitted to hospital with PVW, and uEPX was measured 6 weeks after discharge. Two years after admission, current wheeze in children aged > or =5 years was determined by questionnaire. Controls were recruited from children undergoing elective surgery (normal controls) and from those with skin prick test reactivity to foods (atopic controls). RESULTS There was no difference in uEPX levels between normal controls (n=15) and atopic controls (n=8). uEPX levels were increased in children with acute PVW (n=84; p<0.001 v normal controls, p<0.01 v atopic controls) and fell on convalescence (n=20, 95% CI -217 to -31 microg/mmol creatinine, p<0.05). In children with acute PVW there was no association between uEPX and serum IgE levels or markers of clinical severity. Respiratory questionnaires were returned for 25/55 eligible children. There was no difference in uEPX level during acute PVW when stratified by "current wheeze" (n=18) or "no wheeze" (n=7) 2 years later. CONCLUSIONS Systemic eosinophil activation is associated with PVW but is not associated with serum IgE, clinical severity, or persistence of wheeze into the early school age period.
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Affiliation(s)
- A Oommen
- Leicester Children's Asthma Centre, Institute for Lung Health, University of Leicester, PO Box 65, Leicester LE2 7LX, UK
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23
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Abstract
BACKGROUND In preschool children, attacks of wheeze are usually triggered by viral colds. The inflammatory substrate in preschool viral wheeze (PVW) is unclear, but epidemiological data suggest that most PVW is not caused by allergic inflammation. We therefore speculated that the neutrophils are an important effector cell. Systemic neutrophil activation is the first stage for the development of pulmonary neutrophilia. Markers of neutrophil activation are shedding of the adhesion molecule L-selectin from the cell surface, upregulation of Mac-1 expression, and an increase in serum soluble L-selectin. AIMS To obtain evidence for systemic neutrophil activation during PVW. METHODS Preschool children (1-5 years) admitted to hospital with acute PVW (n = 20) and normal controls (n = 18) were studied. Adhesion molecule expression on CD16 positive neutrophils was determined in both groups and expressed as molecules of equivalent fluorochrome (MEF). Serum soluble L-selectin was analysed by ELISA. RESULTS Compared with controls, children with PVW had reduced neutrophil L-selectin expression (median MEF (IQR): 69 (11 to 96) units versus 136 (109 to 163) units, p < 0.001) and higher serum soluble L-selectin (2.8 (2.3 to 3.1) versus 2.4 (2.2 to 2.6) micro g/ml, p = 0.04). There was no significant difference in neutrophil Mac-1 expression. CONCLUSION Systemic neutrophil activation is associated with acute PVW.
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Affiliation(s)
- A Oommen
- Leicester Children's Asthma Centre, Institute for Lung Health, University of Leicester, PO Box 65, Leicester LE2 7LX, UK
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24
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Dandapani M, Zachariah A, Kavitha MR, Jeyaseelan L, Oommen A. Oxidative damage in intermediate syndrome of acute organophosphorous poisoning. Indian J Med Res 2003; 117:253-9. [PMID: 14748471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023] Open
Abstract
BACKGROUND & OBJECTIVES The main cause of morbidity due to organophosphate poisoning is intermediate syndrome (Type II paralysis) that can occur 48-72 h after poisoning. Mechanisms that underlie the intermediate syndrome are not known. This study investigates the role of oxidative damage to muscles as a possible mechanism underlying the development of the intermediate syndrome. METHODS Nineteen patients with acute organophosphate poisoning were evaluated from admission to discharge from intensive care for the severity of poisoning and the development and duration of the intermediate syndrome. Blood cholinesterases and parameters of oxidative stress were studied daily and their temporal profiles analysed according to the severity of poisoning and the development and duration of the intermediate syndrome. RESULTS Fifteen patients had severe poisoning and 16 developed intermediate syndrome. There was a positive association between the severity of poisoning and the occurrence of intermediate syndrome. There was no association between the organophosphate ingested and the development of intermediate syndrome. Erythrocyte membrane acetylcholinesterase and serum butyrylcholinesterase levels at admission and over the course of poisoning were significantly (P < 0.001) reduced in patients compared to controls. There were significantly (P < 0.05) higher levels of lipid peroxidation, conjugated dienes and protein thiols in erythrocyte membranes of patients who developed the intermediate syndrome compared to healthy controls, in patients who developed intermediate syndrome compared to those who did not and in patients with long compared to short duration intermediate syndrome. INTERPRETATION & CONCLUSION In acute organophosphate poisoning, severe and prolonged acetylcholinesterase inhibition is associated with oxidative stress, detected in erythrocyte membranes, that occurs early in the course of poisoning and may contribute to the development and severity of intermediate syndrome.
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Affiliation(s)
- M Dandapani
- Department of Medicine Unit I, Christian Medical College & Hospital, Vellore, India
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25
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Abstract
Cysteinyl leukotrienes (cystLTs) are important mediators of wheeze in atopic asthma, but the role of cystLTs in the pathogenesis of preschool viral wheeze (PVW) is unclear. Therefore, evidence for increased production of cystLTs in PVW was sought. Urinary leukotriene E4 (uLTE4) and serum total immunoglobulin (Ig)E were measured in children (1-5 yrs) with PVW during an acute attack (n=44) and in the convalescent phase (n=19), and compared with normal controls (n=15). The effect of atopic sensitisation was assessed in a separate group of atopic controls (n=6) in whom only uLTE4 was measured. The levels of uLTE4 were similar in normal and atopic controls and increased in acute PVW (median (interquartile range) 165 (101-285) versus 125 (82-163) ng x mM creatinine(-1)). Stratification by IgE showed that whereas uLTE4 was increased in 23 children with acute PVW and IgE > 95th percentile (median 211 (118-312) ng x mM creatinine(-1)), uLTE4 was not increased in the 21 children with acute PVW and IgE < or = 95th percentile. In the convalescent phase, uLTE4 fell in the subgroup with high IgE but not in the subgroup with low IgE. It is concluded that increased cysteinyl leukotriene production during acute preschool viral wheeze is associated with high serum immunoglobulin E.
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Affiliation(s)
- A Oommen
- Leicester Children's Asthma Centre, Institute for Lung Health, University of Leicester, Leicester, UK
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26
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Abstract
Muscle injury and its role in the development of Type II paralysis was studied in 25 patients with acute organophosphate poisoning. All patients were assessed for severity of poisoning at admission and through the course of poisoning for the development and duration of intermediate syndrome (IS) (Type II paralysis). Blood levels of acetylcholinesterase, creatine kinase, creatine kinase MM, LDH and LDH5 were estimated through the course of the poisoning. Of the 25 patients, 22 were severely poisoned and 3 had mild to moderate poisoning. Severely poisoned patients had a significantly greater rate of developing intermediate syndrome (17/22) (P = 0.026). Type I paralysis and fasciculations occurred in 76 and 70.5% of patients who developed intermediate syndrome, in comparison to 38 and 50%, respectively, of those who did not develop intermediate syndrome. Weakness developed in the same groups of muscles in both Types I and II paralysis but was of longer duration in patients who developed Type II paralysis. Acetylcholinesterase was inhibited > 90% throughout the course of poisoning with greater inhibition in patients with longer duration intermediate syndrome. Muscle injury was seen in all patients beginning at admission, peaking over the first 5 days and then declining over the next 5 days. Temporal profiles of blood muscle isoenzymes showed significantly greater muscle injury in those patients with greater severity of poisoning at admission, those who developed intermediate syndrome and in patients with longer duration intermediate syndrome. The findings of this study suggest that Types I and II paralysis in organophosphate poisoning are not separate syndromes but a clinical continuum determined by the severity of poisoning. The magnitude of organophosphate exposure and of muscle injury during the cholinergic crises appears to determine the occurrence and severity of intermediate syndrome.
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Affiliation(s)
- M John
- Department of Medicine Unit 1, Christian Medical College Hospital, Vellore 632 004, India
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27
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Christadoss E, Oommen A. Rat brain membrane-bound delta opioid receptor: loss and reactivation of binding on dialysis and aging at low temperature. Indian J Biochem Biophys 2001; 38:166-9. [PMID: 11693379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
A change in the environment of rat brain membranes by dialysis from phosphate buffered saline (PBS) to 10 mM potassium phosphate (pH 7.2) led to a 35% loss in delta opioid receptor binding, while alteration of membrane structure on freezing at -20 degrees C for 55 days led to 85% loss of receptor binding. The dialysate, 200 mM KCI and NaCl restored receptor binding lost on dialysis. This K+ and Na+ restabilization of the receptor can be through cation-pi bonding, interactions that are suited to the lipid bilayer. In membranes stored at -20 degrees C, the loss of binding is attributed to increased membrane fluidity by phospholipase A2 action on membrane phospholipids, resulting in an increase of free fatty acids. K+ but not Na+ restabilization of these membrane receptors may be due to the ability of K+ to decrease membrane fluidity.
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Affiliation(s)
- E Christadoss
- Neurochemistry Laboratory, Department of Neurological Sciences, CMC Hospital, Vellore, TN, India
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28
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Khan S, Hemalatha R, Jeyaseelan L, Oommen A, Zachariah A. Neuroparalysis and oxime efficacy in organophosphate poisoning: a study of butyrylcholinesterase. Hum Exp Toxicol 2001; 20:169-74. [PMID: 11393267 DOI: 10.1191/096032701678766796] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The temporal profile of butyrylcholinesterase (BuChE) and in vitro pralidoxime-reactivated BuChE was studied in a cohort of 25 organophosphate-poisoned patients to examine their relationship to the development of intermediate syndrome and to understand reasons for lack of efficacy of oxime treatment. The clinical severity of poisoning (assessed by the Namba Scale) correlated significantly with the severity of intermediate syndrome. BuChE activity increased significantly over time and showed significant relationship to muscle power. The temporal profile of the enzyme was correlated to the clinical severity of poisoning. Reactivation potentials of BuChE (the difference between oxime-reactivated and -unreactivated enzyme activity) declined significantly with time after organophosphate ingestion. The reactivation potential of the enzyme at admission decreased significantly with increasing severity of poisoning and was lower in patients who developed intermediate syndrome. Patients who received oxime prior to hospitalization had a higher rate of intermediate syndrome and lower levels of BuChE at admission than those who had not. The study suggests that (i) BuChE reflects the clinical course of poisoning, confirming earlier studies; (ii) intermediate syndrome may be associated with a persistent inhibition of BuChE; and (iii) the lack of oxime efficacy in our patients maybe due to their severity of poisoning and the timing of oxime treatment.
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Affiliation(s)
- S Khan
- Department of Medicine, Christian Medical College and Hospital, Vellore, Tamil Nadu, India
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29
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Rajshekhar V, Oommen A. Utility of the cysticercus immunoblot in a patient with an atypical solitary cerebral cysticercus granuloma. Neurol India 2001; 49:75-7. [PMID: 11303247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
The value of the enzyme linked immunotransfer blot (EITB) assay in avoiding an invasive diagnostic procedure in a patient with an atypical solitary cerebral cysticercus granuloma is presented.
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Affiliation(s)
- V Rajshekhar
- Department of Neurological Sciences, Christian Medical College and Hospital, Vellore - 632004, Tamilnadu, India
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30
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Affiliation(s)
- A Oommen
- Children's Intensive Care Unit, Leicester Royal Infirmary, UK
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31
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Venkatesh J, Oommen A. A molecular weight study of adenosine deaminase. Indian J Biochem Biophys 1998; 35:16-20. [PMID: 9699414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Adenosine deaminase exists in its smallest molecular form (ADA-S) of < 42 kDa in primate and rodent brain, intestine and liver, human erythrocytes, avian liver and in bovine spleen and intestine. The enzyme exhibits molecular heterogeneity in monkey and chicken liver and human erythrocytes. The large form of adenosine deaminase is seen in monkey liver and intermediary forms of the enzyme in chicken liver and human erythrocytes. Large forms of the enzyme predominate in rabbit intestine. Molecular weights of adenosine deaminase molecular forms were determined by gel filtration and by non denaturing gel electrophoresis with construction of Ferguson plots. Anomalous migration of the enzyme on SDS-PAGE possibly due to charge, disulfide bonds and proline content, did not allow for molecular weight determination on denaturing gels.
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Affiliation(s)
- J Venkatesh
- Department of Neurological Sciences, Christian Medical College & Hospital, Vellore, Tamilnadu, India
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32
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Abstract
The term "low-set ears" has been in common use for several decades to describe various malformation syndromes. But an accurate description of the normal position of the auricles is lacking in relevant literature. This study was designed to determine the normal position of auricles using bony landmarks that are less variable. The normal position of the auricle was determined in 1,000 neonates without any obvious congenital anomalies. A fixed bony point (point z) on the upper border of the posterior part of the zygomatic process of the temporal bone opposite the condyle of the mandible was selected. This point lies in front of the auricle and is easily palpable in neonates. The distance between point z and the upper and lower attachments of the auricle were measured as well as the distance between point z and the upper and lower poles of the auricle. The results were compared between the two sexes and between right and left sides. There was a wide variation in the distances measured in normal neonates. This highlights the importance of redefining the term "low-set ears."
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Affiliation(s)
- A Oommen
- Kasturba Medical College, Manipal, Karnataka, India
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33
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Abstract
To investigate the diagnostic utility of adenosine deaminase as a test for tuberculosis, molecular forms of the enzyme indicative of cell-mediated immunity were studied in tuberculosis pleural effusion, peritonitis and meningitis. Twenty-six pleural, 21 peritoneal, and 24 cerebrospinal tuberculous and non-tuberculous fluids were examined for adenosine deaminase and the large and small forms of the enzyme were differentiated on immunoblots. Adenosine deaminase levels ranged from zero to 81 units/L, zero to 31 units/L and zero to 31 units/L in the pleural, peritoneal and cerebrospinal fluids, respectively. The large form of adenosine deaminase (280 kDa) was detected in one of 14 proved tuberculous cases, a peritoneal fluid. The small form of the enzyme (35-39 kDa) was seen in both tuberculous and non-tuberculous conditions in 6 pleural, 7 peritoneal and 8 cerebrospinal fluids. Molecular forms of adenosine deaminase did not appear to help in the diagnosis of tuberculosis in this patient population and may not be suited for analysis in fluids with low enzyme activity.
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Affiliation(s)
- J Venkatesh
- Department of Neurological Sciences, Christian Medical College and Hospital, Tamilnadu, India
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34
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Anand DJ, Oommen A. A molecular weight study of the rat brain delta opioid receptor. Indian J Biochem Biophys 1995; 32:161-5. [PMID: 7590858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The molecular weight of the rat brain delta opioid receptor, studied with antiidiotypic antibodies to anti-leucine enkephalin that mimic leucine enkephalin in binding to the receptor, was examined by molecular sieving and Western Blots under nondenaturing, denaturing and reducing conditions. The receptor appeared to be 55-65 kDa, which on solubilization may exist in equilibrium with receptor oligomers of 130-150 kDa and aggregates of > 200 kDa. These forms may also represent aggregation due to solubilization. A 38-43 kDa molecule was considered a minor form of the receptor in the brain.
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Affiliation(s)
- D J Anand
- Department of Neurological Sciences, Christian Medical College Hospital, Tamil Nadu
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35
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Anand DJ, Oommen A. Ontogeny, glycosylation and modulation by dialysis, sodium and nucleotides of the rat brain delta opioid receptor studied with anti-idiotypic antibodies to anti-leucine enkephalin. Indian J Biochem Biophys 1995; 32:84-8. [PMID: 7642205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Ontogeny of the rat brain delta opioid receptor in 1-60 days old animals has been studied with anti-idiotypic antibodies to anti-leucine enkephalin. It is found that delta opioid receptors are present in rats from birth and attain adult levels by 28 days and these receptors are glycosylated and inhibited by Na+, GTP, ATP and CTP at all ages. Adult membrane-bound and solubilized delta opioid receptors are inhibited to similar extents by Na+ (100 mM), GTP, ATP and CTP (50 microM). Dialysis of the adult membrane-bound receptor led to 81% loss in binding which was restored by 100 mM Na+, 50 microM GTP, ATP and CTP to 77, 72, 87 and 94% respectively and by 100 mM NH4+, Mg2+, Ca2+ and Mn2+ to 63, 43, 57 and 73% respectively. Dialysis of the solubilized receptor resulted in 23% loss in binding with Na+ (100 mM), GTP and ATP (50 microM) inhibiting receptor binding to 46, 62 and 54% respectively, while CTP (50 microM) restored binding to 88%. These studies indicate that the delta opioid receptor can be probed with anti-idiotypic antibodies to anti-leucine enkephalin, that functional, glycosylated receptors are present at birth in rats and that the adult membrane-bound and solubilized receptors are modulated differently by dialysis.
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Affiliation(s)
- D J Anand
- Department of Neurological Sciences, Christian Medical College & Hospital, Vellore, Tamilnadu
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36
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37
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Anand DJ, Ranjan M, Oommen A. Immunohistochemical mapping of rat brain delta opioid receptor. Indian J Exp Biol 1995; 33:44-7. [PMID: 9135675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Delta opioid receptors were immunohistochemically mapped in the rat brain with anti-idiotypic antibodies to anti-leucine enkephalin specific for the receptor. Regions of highest receptor binding were in the cerebral cortex and caudate putamen Lower receptor binding was mapped to the hypothalamus and claustrum.
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Affiliation(s)
- D J Anand
- Department of Neurological Sciences, Christian Medical College & Hospital, Vellore, India
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38
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Oommen A, Dixon RA, Paiva NL. The elicitor-inducible alfalfa isoflavone reductase promoter confers different patterns of developmental expression in homologous and heterologous transgenic plants. Plant Cell 1994; 6:1789-1803. [PMID: 7866024 PMCID: PMC160562 DOI: 10.1105/tpc.6.12.1789] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In legumes, the synthesis of infection- and elicitor-inducible antimicrobial phytoalexins occurs via the isoflavonoid branch of the phenylpropanoid pathway. To study transcriptional regulation of isoflavonoid pathway-specific genes, we have isolated the gene encoding isoflavone reductase (IFR), which is the enzyme that catalyzes the penultimate step in the synthesis of the phytoalexin medicarpin in alfalfa. Chimeric gene fusions were constructed between 765- and 436-bp promoter fragments of the IFR gene and the beta-glucuronidase reporter gene and transferred to alfalfa and tobacco by Agrobacterium-mediated transformation. Both promoter fragments conferred elicitor-mediated expression in cell suspension cultures derived from transgenic plants of both species and fungal infection-mediated expression in leaves of transgenic alfalfa. Developmental expression directed by both promoter fragments in transgenic alfalfa was observed only in the root meristem, cortex, and nodules, which is consistent with the accumulation of endogenous IFR transcripts. However, in transgenic tobacco, expression from the 765-bp promoter was observed in vegetative tissues (root meristem and cortex, inner vascular tissue of stems and petioles, leaf tips, and stem peripheries adjacent to petioles) and in reproductive tissues (stigma, placenta, base of the ovary, receptacle, seed, tapetal layer, and pollen grains), whereas the 436-bp promoter was expressed only in fruits, seed, and pollen. These data indicate that infection/elicitor inducibility of the IFR promoter in both species and developmental expression in alfalfa are determined by sequences downstream of position -436, whereas sequences between -436 and -765 confer a complex pattern of strong ectopic developmental expression in the heterologous species that lacks the isoflavonoid pathway.
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Affiliation(s)
- A Oommen
- Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73402
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39
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Anand DJ, Oommen A. The rat brain delta opioid receptor studied with anti-idiotypic antibodies to anti-leucine enkephalin. Indian J Biochem Biophys 1993; 30:117-22. [PMID: 8394838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Anti-idiotypic antibodies to anti-leucine enkephalin raised in rabbits immunized with leucine enkephalin conjugated to BSA, were purified and characterized for their ability to mimic leucine enkephalin in binding to the rat brain delta opioid receptor. An ELISA was standardized to assay the delta opioid receptor using these antibodies. The rat brain receptor was purified to 308 fold with a yield of 1.5% using these antibodies for assay. The receptor, probed with these anti-idiotypic antibodies, was characterized with respect to binding parameters, molecular weight and effect of divalent cations.
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Affiliation(s)
- D J Anand
- Department of Neurological Sciences, Christian Medical College and Hospital, Tamilnadu, India
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40
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Kaur A, Basha A, Ranjan M, Oommen A. Poor diagnostic value of adenosine deaminase in pleural, peritoneal & cerebrospinal fluids in tuberculosis. Indian J Med Res 1992; 95:270-7. [PMID: 1291460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Adenosine deaminase (ADA) was estimated in 84 pleural, 140 peritoneal and 136 cerebrospinal fluids to study its diagnostic usefulness as a routine test for tuberculosis. The sensitivity, specificity, positive and negative predictive values for diagnosing tuberculosis in pleural fluids (ADA > 30 U/l) was 67, 92, 78 and 87 per cent respectively, in peritoneal fluids (ADA > 15 U/1) it was 89, 81, 25 and 99 per cent respectively and in cerebrospinal fluids (ADA > 10 U/l) it was 50, 90 21 and 97 per cent respectively. The differences in mean ADA levels between tuberculous (28.0 and 19.5 U/1) and non-tuberculous (9.7 and 4.8 U/1) peritoneal and cerebrospinal fluids although statistically significant (P < 0.001), were of no practical clinical value. A wide scatter in ADA values was seen in both tuberculous and non-tuberculous fluids. ADA estimation in plasma, lymphocytes and cell fractions of fluids was also not diagnostically useful nor did it throw light on the source of elevated ADA in fluids.
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Affiliation(s)
- A Kaur
- Department of Medicine, Christian Medical College Hospital, Vellore
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41
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Abstract
tRNAs in eukaryotic nuclei and organelles are synthesized as precursors lacking the 3'-terminal CCA sequence and possessing 5' (leader) and 3' (trailer) extensions. Nucleolytic cleavage of the 3' trailer and addition of CCA are therefore required for formation of functional tRNA 3' termini. Many chloroplast tRNA genes encode a C at position 74 which is not removed during processing but which can be incorporated as the first base of the CCAOH terminus. Sequences downstream of nucleotide 74, however, are always removed. Synthetic yeast pre-tRNA(Phe) substrates containing the complete CCA74-76 sequence were processed with crude or partially purified chloroplast enzyme fractions. The 3'-extended substrates (tRNA-CCA-trailer) were cleaved exclusively between nucleotides 74 and 75 to give tRNA-COH, whereas a 3'-mature transcript (tRNA-CCAOH) was not cleaved at all. A 5'-, 3'-extended chloroplast tRNA-CAG-trailer was also processed entirely to tRNA-COH. Furthermore, a 5'-mature, 3'-extended yeast pre-tRNA(Phe) derivative, tRNA-ACA-trailer, in which C74 was replaced by A, was cleaved precisely after A74. In contrast, we found that a partially purified enzyme fraction (a nuclear/cytoplasmic activity) from wheat embryo cleaved the 3'-extended yeast tRNA(Phe) precursors between nucleotides 73 and 74 to give tRNA(OH). This specificity is consistent with that of all previously characterized nuclear enzyme preparations. We conclude that (i) chloroplast tRNA 3'-processing endonuclease cleaves after nucleotide 74 regardless of the nature of the surrounding sequences; (ii) this specificity differs from that of the plant nuclear/cytoplasmic processing nuclease, which cleaves after base 73; and (iii) since 3'-mature tRNA is not a substrate for either activity, these 3' nucleases must require substrates possessing a 3'-terminal extension that extends past nucleotide 76. This substrate specificity may prevent mature tRNA from counterproductive cleavage by the 3' processing system.
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Affiliation(s)
- A Oommen
- Department of Botany, University of Kansas, Lawrence 66045-2106
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42
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Zachariah A, Basha A, Bhattacharji S, Oommen A. N-acetyl-beta-D-glucosaminidase in the localisation of urinary tract infection in patients with spinal cord injury. Paraplegia 1991; 29:324-9. [PMID: 1886732 DOI: 10.1038/sc.1991.47] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This study evaluates the pattern of urinary N-acetyl-beta-D-glucosaminidase (NAG) isoenzyme excretion in patients with spinal cord injury (SCI) and its use as a diagnostic tool in localising the site of urinary tract infection (UTI). NAG-B excretion in 27 control SCI patients (mean 207.78 units) was significantly higher than in 10 normal controls (mean 12.6 units) p less than 0.001). The relative isoenzyme distribution as represented by NAG-B/Total NAG percentage is however similar in both groups, 24.27 and 20.38% respectively. NAG-B excretion in 6 SCI patients with upper UTI was not significantly higher than in 12 SCI patients with lower UTI. NAG-B/Total NAG percentage was significantly different between these two groups (35.3% and 24.98% respectively, p less than 0.05). There was no significant difference in NAG-B excretion or NAG-B/Total NAG percentage between control SCI patients and those with lower UTI. The results indicate that there is a non-selective increase in urinary NAG excretion in control SCI patients and those with lower UTI. In SCI patients with upper urinary UTI there is a selective increase in NAG-B excretion. The overlap in enzyme values between the different groups suggests that the test may not be clinically useful in localising the site of UTI.
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Affiliation(s)
- A Zachariah
- Department of Physical Medicine and Rehabilitation, Christian Medical College and Hospital, Tamilnadu, India
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43
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Affiliation(s)
- U Menon
- Department of Obstetrics and Gynaecology, Christian Medical College and Hospital, Vellore, India
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44
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Oommen A, Ferrandis I, Wang MJ. Single-step labeling of DNA using restriction endonucleases and T4 polynucleotide kinase. Biotechniques 1990; 8:482, 484, 486. [PMID: 2162682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
DNA restriction fragments can be end-labeled in a combined digestion and labeling reaction with restriction endonuclease plus T4 polynucleotide kinase, omitting a dephosphorylation step. Both pBR322 and phage lambda DNA digests are efficiently labeled in one step, one tube and one incubation.
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Affiliation(s)
- A Oommen
- Dept. of Biochemistry, University of Kansas, Lawrence 66045-2106
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Prabhakar S, Basha A, Bhagyalakshmi G, Oommen A. Blood-brain-barrier and intrathecal immunoglobulin changes in tuberculous meningitis and demyelinating disorders: a preliminary report from a south Indian hospital. Acta Neurol Scand 1990; 81:448-51. [PMID: 2115723 DOI: 10.1111/j.1600-0404.1990.tb00993.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Sixty-three paired serum and CSF samples (15 controls and 48 patients) were studied for CSF albumin quotient, IgG index and synthesis rate. Control values for albumin quotient and IgG index were less than 10.0 and less than 0.6 respectively. IgG synthesis rate/day was calculated according to the Tourtellotte formula and a value of greater than 3.0 mg/day is considered high. Our findings in patients with central demyelinations, subacute sclerosing panencephalitis, Guillain Barré Syndrome and cerebrovascular accidents are comparable to earlier studies. Fifteen tuberculous meningitis patients were studied and could be separated into 2 groups, 9 with elevated albumin quotients and 6 with normal albumin quotients. Three patients with elevated albumin quotients and 4 with normal albumin quotients showed increased intrathecal IgG synthesis.
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Affiliation(s)
- S Prabhakar
- Department of Neurological Sciences, CMC Hospital, Vellore, India
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Abstract
An enzyme-linked immunosorbent assay (ELISA) was studied as a possible laboratory test to aid in the diagnosis of tuberculous meningitis (TBM) in an Indian population. The assay detected mycobacterial antibodies in the cerebrospinal fluid (CSF) of TBM patients. Three antigens, PPD, BCG and M. tuberculosis were tested for use in the assay and of these, M. tuberculosis was found to be the most suited. A sensitivity of 72% and specificity of 92% with M. tuberculosis as antigen was obtained for the ELISA under discussion. The system therefore does hold promise as a diagnostic laboratory test for TBM.
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Franklin RM, Emmons LR, Emmons RP, Kai O, Oommen A, Pink JR, Rijnbeek AM, Schnetzler M, Tuderman L, Vainio E. A monoclonal antibody recognizes an epitope common to an avian-specific nuclear antigen and to cytokeratins. J Cell Biochem 1984; 24:1-14. [PMID: 6202707 DOI: 10.1002/jcb.240240102] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
X3, a monoclonal antibody of unusual specificity, is described. This antibody reacts with one or more cytokeratin polypeptides and also reacts with an avian (chicken, quail) nuclear antigen that appears to be present in all cell types (chicken) tested, although with variable staining pattern and intensity. This antigen is distinct from the cytokeratins but does have an epitope in common with this class of proteins. It disappears from the nucleus during the early stages of cell division and reappears during anaphase as a granular cytoplasmic structure. In late telophase the antigen is relocated in the nucleus. This antigen, which we have designated as avian-specific nuclear antigen ( AVNA ), is not associated with chromatin or ribonucleoproteins. From immunoblotting experiments on chicken fibroblast nuclei, AVNA is probably a complex composed of one or several polypeptides, one of which has a molecular weight of approximately 60 kD. The proteins were identified as nuclear matrix proteins rather than pore complex-lamina proteins by immunoblotting experiments on the purified nuclear matrix of chicken erythrocytes. The major polypeptide had a molecular weight of 60 kD and the minor polypeptide a molecular weight of 69 kD.
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Abstract
Chicken spleen and peripheral blood lymphocytes were tested for their ability to produce T cell growth factor (interleukin 2, IL 2) upon stimulation with phytohemaglutinin or concanavalin A (Con A). Using a qualitative microassay, peak activity was found in 24-h supernatants of mitogen-stimulated lymphocytes. These supernatants permitted continuous growth of chicken lymphocytes for several weeks and increased the Con A response of chicken thymocytes. A quantitative probit microassay was developed and used in the further studies when appropriate. Chicken IL2 binds specifically to thymocytes and activated T cells and its action upon T blast cells cannot be blocked by cyclosporin A. The molecular weights of the two biological active peaks found by gel filtration of the native IL2 preparation were in the range 19500-21500 and 9000-11500. A single polypeptide of molecular weight 13000 was found by gel electrophoresis under reducing conditions.
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Franklin RM, Emmons LR, Emmons RP, Oommen A, Pink JR, Rijnbeek AM, Schnetzler M, Tuderman L, Vainio E. Monoclonal antibody which recognizes a common antigenic determinant on intermediate filament proteins, actin, and myosin. Hybridoma (Larchmt) 1983; 2:275-85. [PMID: 6205979 DOI: 10.1089/hyb.1983.2.275] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A monoclonal antibody is described which reacts with the intermediate filament proteins vimentin, desmin, keratins, actin, and myosin. This is the first report of an epitope common to intermediate filament proteins and myosin. X1, the wide-spectrum monoclonal antibody in question, was isolated in the course of screening monoclonal antibodies to chicken thymocytes. Cross-reactivities were investigated by immunofluorescence on various types of cultured cells and sectioned tissues, ELISA with a panel of purified antigens, immunoprecipitation, immunodot tests, and immunoblotting.
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Oommen A, George ST, Balasubramanian AS. Phenacetin-N-deacetylase and its non-identity with the serotonin sensitive aryl acylamidase of brain. Life Sci 1980; 26:2129-36. [PMID: 6772906 DOI: 10.1016/0024-3205(80)90599-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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