1
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Florin TA, Freedman SB, Xie J, Funk AL, Tancredi DJ, Kim K, Neuman MI, Yock-Corrales A, Bergmann KR, Breslin KA, Finkelstein Y, Ahmad FA, Avva UR, Lunoe MM, Chaudhari PP, Shah NP, Plint AC, Sabhaney VJ, Sethuraman U, Gardiner MA, Sartori LF, Wright B, Navanandan N, Mintegi S, Gangoiti I, Borland ML, Chong SL, Kwok MY, Eckerle M, Poonai N, Romero CMA, Waseem M, Nebhrajani JR, Bhatt M, Caperell K, Campos C, Becker SM, Morris CR, Rogers AJ, Kam AJ, Pavlicich V, Palumbo L, Dalziel SR, Morrison AK, Rino PB, Cherry JC, Salvadori MI, Ambroggio L, Klassen TP, Payne DC, Malley R, Simon NJ, Kuppermann N. Features Associated With Radiographic Pneumonia in Children with SARS-CoV-2. J Pediatric Infect Dis Soc 2024; 13:257-259. [PMID: 38391389 DOI: 10.1093/jpids/piae015] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Indexed: 02/24/2024]
Abstract
14% of children with SARS-CoV-2 infections had radiographic pneumonia. Hypoxemia, cough, higher temperature, and older age were associated with pneumonias. In children tested, SARS-CoV-2 test results were not associated with radiographic pneumonia.
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Affiliation(s)
- Todd A Florin
- Division of Emergency Medicine, Department of Pediatrics, Ann and Robert H. Lurie Children's Hospital of Chicago, Feinberg School of Medicine, Northwestern University, Chicago, USA
| | - Stephen B Freedman
- Sections of Pediatric Emergency Medicine and Gastroenterology, Departments of Pediatrics and Emergency Medicine, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Jianling Xie
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Anna L Funk
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | | | - Kelly Kim
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Mark I Neuman
- Division of Emergency Medicine, Department of Pediatrics, Harvard Medical School, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Adriana Yock-Corrales
- Department of Emergency Medicine, Hospital Nacional de Niños "Dr. Carlos Sáenz Herrera", CCSS, San José, Costa Rica
| | - Kelly R Bergmann
- Department of Emergency Medicine, Children's Minnesota, Minneapolis, USA
| | - Kristen A Breslin
- Division of Emergency Medicine, Children's National Hospital, Washington, District of Columbia, USA
| | - Yaron Finkelstein
- Divisions of Emergency Medicine, and Clinical Pharmacology and Toxicology, Department of Pediatrics Hospital for Sick Children, Toronto, Canada
| | - Fahd A Ahmad
- Department of Pediatrics, Washington University School of Medicine, St. Louis, USA
| | - Usha R Avva
- Department of Emergency Medicine, Montefiore-Nyack Hospital, Nyack, New York, USA
| | - Maren M Lunoe
- Department of Pediatrics, UPMC Children's Hospital of Pittsburgh, Pittsburgh, USA
| | - Pradip P Chaudhari
- Division of Emergency and Transport Medicine, Children's Hospital Los Angeles and Keck School of Medicine of the University of Southern California, Los Angeles, USA
| | - Nipam P Shah
- Division of Pediatric Emergency Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, USA
| | - Amy C Plint
- Division of Emergency Medicine, Children's Hospital of Eastern Ontario, Department of Pediatrics, University of Ottawa, Ottawa, Canada
| | - Vikram J Sabhaney
- Department of Paediatrics, University of British Columbia, Vancouver, Canada
| | - Usha Sethuraman
- Division of Emergency Medicine, Department of Pediatrics, Children's Hospital of Michigan, Central Michigan University, Detroit, USA
| | - Michael A Gardiner
- Department of Pediatrics, Rady Children's Hospital, University of California San Diego, San Diego, USA
| | - Laura F Sartori
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, USA
| | - Bruce Wright
- Division of Pediatric Emergency Medicine, Department of Pediatrics, University of Alberta, Stollery Children's Hospital, Women's and Children's Health Research Institute, Edmonton, Canada
| | - Nidhya Navanandan
- Section of Emergency Medicine, Department of Pediatrics, Children's Hospital Colorado, University of Colorado, Aurora, USA
| | - Santiago Mintegi
- Pediatric Emergency Department, Biocruces Bizkaia Health Research Institute, Hospital Universitario Cruces, University of the Basque Country, UPV/EHU, Bilbao, Basque Country, Spain
| | - Iker Gangoiti
- Pediatric Emergency Department, Biocruces Bizkaia Health Research Institute, Hospital Universitario Cruces, University of the Basque Country, UPV/EHU, Bilbao, Basque Country, Spain
| | - Meredith L Borland
- Divisions of Emergency Medicine and Paediatrics, School of Medicine, Perth Children's Hospital, University of Western Australia, Perth, Australia
| | - Shu-Ling Chong
- Department of Emergency Medicine, KK Women's and Children's Hospital, Pediatrics Academic Clinical Programme, Emergency Medicine Academic Clinical Programme, Duke-NUS Medical School, Singapore
| | - Maria Y Kwok
- Department of Emergency Medicine, New York Presbyterian Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, NY, New York, USA
| | - Michelle Eckerle
- Division of Pediatric Emergency Medicine, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati Children's Hospital, Cincinnati, USA
| | - Naveen Poonai
- Department of Pediatrics, Schulich School of Medicine & Dentistry, London, Canada
| | | | - Muhammad Waseem
- Department of Pediatrics, Lincoln Medical Center, New York City, Bronx, New York, USA
| | | | - Maala Bhatt
- Department of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, Canada
| | - Kerry Caperell
- Division of Emergency Medicine, Department of Pediatrics, University of Louisville, Norton Children's Hospital, Louisville, USA
| | - Carmen Campos
- Pediatric Emergency Department, Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - Sarah M Becker
- Department of Pediatrics, Primary Children's Hospital, Intermountain Healthcare, Salt Lake City, USA
| | - Claudia R Morris
- Division of Emergency Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta, Atlanta, USA
| | - Alexander J Rogers
- Departments of Emergency Medicine and Pediatrics, University of Michigan School of Medicine, Ann Arbor, USA
| | - April J Kam
- Division of Emergency Medicine, Department of Pediatrics, McMaster Children's Hospital, Hamilton, Canada
| | - Viviana Pavlicich
- Departamento de Emergencia Pediátrica, Facultad de Medicina, Hospital General Pediátrico Niños de Acosta Ñu, Universidad Privada del Pacífico, San Lorenzo, Paraguay
| | - Laura Palumbo
- Department of Pediatrics, ASST Spedali Civili di Brescia - Pronto soccorso pediatrico, Brescia, Italy
| | - Stuart R Dalziel
- Children's Emergency Department, Starship Children's Hospital, Auckland, New Zealand
- Departments of Surgery and Paediatrics: Child and Youth Health, University of Auckland, Auckland, New Zealand
| | - Andrea K Morrison
- Division of Emergency Medicine, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, USA
| | - Pedro B Rino
- Department of Pediatrics, Hospital de Pediatría "Prof. Dr. Juan P. Garrahan", RIDEPLA, Buenos Aires, Argentina
| | - Jonathan C Cherry
- Department of Pediatric Emergency Medicine, IWK Health Centre, Dalhousie University, Halifax, Canada
| | | | - Lilliam Ambroggio
- Section of Emergency Medicine, Department of Pediatrics, Children's Hospital Colorado, University of Colorado, Aurora, USA
| | - Terry P Klassen
- Department of Pediatrics and Child Health, Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Canada
| | - Daniel C Payne
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Richard Malley
- Division of Infectious Diseases, Boston Children's Hospital and Harvard Medical School, Boston, USA
| | - Norma-Jean Simon
- Data Analytics and Reporting and Division of Emergency Medicine, Ann and Robert H Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Nathan Kuppermann
- Departments of Emergency Medicine and Pediatrics, University of California, Davis School of Medicine, Sacramento, USA
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Xie J, Kuppermann N, Florin TA, Tancredi DJ, Funk AL, Kim K, Salvadori MI, Yock-Corrales A, Shah NP, Breslin KA, Chaudhari PP, Bergmann KR, Ahmad FA, Nebhrajani JR, Mintegi S, Gangoiti I, Plint AC, Avva UR, Gardiner MA, Malley R, Finkelstein Y, Dalziel SR, Bhatt M, Kannikeswaran N, Caperell K, Campos C, Sabhaney VJ, Chong SL, Lunoe MM, Rogers AJ, Becker SM, Borland ML, Sartori LF, Pavlicich V, Rino PB, Morrison AK, Neuman MI, Poonai N, Simon NJE, Kam AJ, Kwok MY, Morris CR, Palumbo L, Ambroggio L, Navanandan N, Eckerle M, Klassen TP, Payne DC, Cherry JC, Waseem M, Dixon AC, Ferre IB, Freedman SB. Impact of SARS-CoV-2 Infection on the Association Between Laboratory Tests and Severe Outcomes Among Hospitalized Children. Open Forum Infect Dis 2023; 10:ofad485. [PMID: 37869403 PMCID: PMC10588618 DOI: 10.1093/ofid/ofad485] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 09/28/2023] [Indexed: 10/24/2023] Open
Abstract
Background To assist clinicians with identifying children at risk of severe outcomes, we assessed the association between laboratory findings and severe outcomes among severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-infected children and determined if SARS-CoV-2 test result status modified the associations. Methods We conducted a cross-sectional analysis of participants tested for SARS-CoV-2 infection in 41 pediatric emergency departments in 10 countries. Participants were hospitalized, had laboratory testing performed, and completed 14-day follow-up. The primary objective was to assess the associations between laboratory findings and severe outcomes. The secondary objective was to determine if the SARS-CoV-2 test result modified the associations. Results We included 1817 participants; 522 (28.7%) SARS-CoV-2 test-positive and 1295 (71.3%) test-negative. Seventy-five (14.4%) test-positive and 174 (13.4%) test-negative children experienced severe outcomes. In regression analysis, we found that among SARS-CoV-2-positive children, procalcitonin ≥0.5 ng/mL (adjusted odds ratio [aOR], 9.14; 95% CI, 2.90-28.80), ferritin >500 ng/mL (aOR, 7.95; 95% CI, 1.89-33.44), D-dimer ≥1500 ng/mL (aOR, 4.57; 95% CI, 1.12-18.68), serum glucose ≥120 mg/dL (aOR, 2.01; 95% CI, 1.06-3.81), lymphocyte count <1.0 × 109/L (aOR, 3.21; 95% CI, 1.34-7.69), and platelet count <150 × 109/L (aOR, 2.82; 95% CI, 1.31-6.07) were associated with severe outcomes. Evaluation of the interaction term revealed that a positive SARS-CoV-2 result increased the associations with severe outcomes for elevated procalcitonin, C-reactive protein (CRP), D-dimer, and for reduced lymphocyte and platelet counts. Conclusions Specific laboratory parameters are associated with severe outcomes in SARS-CoV-2-infected children, and elevated serum procalcitonin, CRP, and D-dimer and low absolute lymphocyte and platelet counts were more strongly associated with severe outcomes in children testing positive compared with those testing negative.
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Affiliation(s)
| | - Nathan Kuppermann
- Davis School of Medicine, University of California, Sacramento, California, USA
| | - Todd A Florin
- Ann and Robert H. Lurie Children’s Hospital of Chicago, Northwestern University, Chicago, Illinois, USA
| | - Daniel J Tancredi
- Davis School of Medicine, University of California, Sacramento, California, USA
| | - Anna L Funk
- University of Calgary, Calgary, Alberta, Canada
| | - Kelly Kim
- University of Calgary, Calgary, Alberta, Canada
| | | | | | - Nipam P Shah
- University of Alabama at Birmingham, Birmingham, Alabama, USA
| | | | | | | | - Fahd A Ahmad
- Washington University School of Medicine, St.Louis, Missouri, USA
| | | | - Santiago Mintegi
- University of the Basque Country, UPV/EHU Bilbao, Basque Country, Spain
| | - Iker Gangoiti
- University of the Basque Country, UPV/EHU Bilbao, Basque Country, Spain
| | - Amy C Plint
- University of Ottawa, Ottawa, Ontario, Canada
| | - Usha R Avva
- Montefiore-Nyack Hospital, Nyack, NewYork, New York, USA
| | | | | | | | | | - Maala Bhatt
- Children’s Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | | | | | - Carmen Campos
- Hospital Universitario Miguel Servet, Zaragoza, Spain
| | | | - Shu-Ling Chong
- Duke-NUS Medical School, SingHealth Duke-NUS Global Health Institute, Singapore
| | - Maren M Lunoe
- UPMC Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | | | - Sarah M Becker
- Primary Children’s Hospital, Intermountain Healthcare, Salt Lake City, Utah, USA
| | | | - Laura F Sartori
- Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | | | - Pedro B Rino
- Hospital de Pediatría “Prof. Dr. Juan P. Garrahan,” RIDEPLA, Buenos Aires, Argentina
| | | | | | - Naveen Poonai
- Schulich School of Medicine & Dentistry, London, Ontario, Canada
| | - Norma-Jean E Simon
- Ann and Robert H Lurie Children’s Hospital of Chicago, Chicago, Illinois, USA
| | - April J Kam
- McMaster Children’s Hospital, Hamilton, Ontario, Canada
| | - Maria Y Kwok
- Columbia University Irving Medical Center, NewYork, New York, USA
| | - Claudia R Morris
- Children’s Healthcare of Atlanta, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Laura Palumbo
- ASST Spedali Civili di Brescia—Pronto Soccorso Pediatrico, Brescia, Italy
| | | | | | - Michelle Eckerle
- University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | | | - Daniel C Payne
- Centers for Disease Control and Prevention, Atlanta, Georgia, USA
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3
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Funk AL, Kuppermann N, Florin TA, Tancredi DJ, Xie J, Kim K, Finkelstein Y, Neuman MI, Salvadori MI, Yock-Corrales A, Breslin KA, Ambroggio L, Chaudhari PP, Bergmann KR, Gardiner MA, Nebhrajani JR, Campos C, Ahmad FA, Sartori LF, Navanandan N, Kannikeswaran N, Caperell K, Morris CR, Mintegi S, Gangoiti I, Sabhaney VJ, Plint AC, Klassen TP, Avva UR, Shah NP, Dixon AC, Lunoe MM, Becker SM, Rogers AJ, Pavlicich V, Dalziel SR, Payne DC, Malley R, Borland ML, Morrison AK, Bhatt M, Rino PB, Beneyto Ferre I, Eckerle M, Kam AJ, Chong SL, Palumbo L, Kwok MY, Cherry JC, Poonai N, Waseem M, Simon NJ, Freedman SB. Post-COVID-19 Conditions Among Children 90 Days After SARS-CoV-2 Infection. JAMA Netw Open 2022; 5:e2223253. [PMID: 35867061 PMCID: PMC9308058 DOI: 10.1001/jamanetworkopen.2022.23253] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
IMPORTANCE Little is known about the risk factors for, and the risk of, developing post-COVID-19 conditions (PCCs) among children. OBJECTIVES To estimate the proportion of SARS-CoV-2-positive children with PCCs 90 days after a positive test result, to compare this proportion with SARS-CoV-2-negative children, and to assess factors associated with PCCs. DESIGN, SETTING, AND PARTICIPANTS This prospective cohort study, conducted in 36 emergency departments (EDs) in 8 countries between March 7, 2020, and January 20, 2021, included 1884 SARS-CoV-2-positive children who completed 90-day follow-up; 1686 of these children were frequency matched by hospitalization status, country, and recruitment date with 1701 SARS-CoV-2-negative controls. EXPOSURE SARS-CoV-2 detected via nucleic acid testing. MAIN OUTCOMES AND MEASURES Post-COVID-19 conditions, defined as any persistent, new, or recurrent health problems reported in the 90-day follow-up survey. RESULTS Of 8642 enrolled children, 2368 (27.4%) were SARS-CoV-2 positive, among whom 2365 (99.9%) had index ED visit disposition data available; among the 1884 children (79.7%) who completed follow-up, the median age was 3 years (IQR, 0-10 years) and 994 (52.8%) were boys. A total of 110 SARS-CoV-2-positive children (5.8%; 95% CI, 4.8%-7.0%) reported PCCs, including 44 of 447 children (9.8%; 95% CI, 7.4%-13.0%) hospitalized during the acute illness and 66 of 1437 children (4.6%; 95% CI, 3.6%-5.8%) not hospitalized during the acute illness (difference, 5.3%; 95% CI, 2.5%-8.5%). Among SARS-CoV-2-positive children, the most common symptom was fatigue or weakness (21 [1.1%]). Characteristics associated with reporting at least 1 PCC at 90 days included being hospitalized 48 hours or more compared with no hospitalization (adjusted odds ratio [aOR], 2.67 [95% CI, 1.63-4.38]); having 4 or more symptoms reported at the index ED visit compared with 1 to 3 symptoms (4-6 symptoms: aOR, 2.35 [95% CI, 1.28-4.31]; ≥7 symptoms: aOR, 4.59 [95% CI, 2.50-8.44]); and being 14 years of age or older compared with younger than 1 year (aOR, 2.67 [95% CI, 1.43-4.99]). SARS-CoV-2-positive children were more likely to report PCCs at 90 days compared with those who tested negative, both among those who were not hospitalized (55 of 1295 [4.2%; 95% CI, 3.2%-5.5%] vs 35 of 1321 [2.7%; 95% CI, 1.9%-3.7%]; difference, 1.6% [95% CI, 0.2%-3.0%]) and those who were hospitalized (40 of 391 [10.2%; 95% CI, 7.4%-13.7%] vs 19 of 380 [5.0%; 95% CI, 3.0%-7.7%]; difference, 5.2% [95% CI, 1.5%-9.1%]). In addition, SARS-CoV-2 positivity was associated with reporting PCCs 90 days after the index ED visit (aOR, 1.63 [95% CI, 1.14-2.35]), specifically systemic health problems (eg, fatigue, weakness, fever; aOR, 2.44 [95% CI, 1.19-5.00]). CONCLUSIONS AND RELEVANCE In this cohort study, SARS-CoV-2 infection was associated with reporting PCCs at 90 days in children. Guidance and follow-up are particularly necessary for hospitalized children who have numerous acute symptoms and are older.
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Affiliation(s)
- Anna L Funk
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Nathan Kuppermann
- Department of Emergency Medicine, University of California, Davis School of Medicine, Sacramento
- Department of Pediatrics, University of California, Davis School of Medicine, Sacramento
| | - Todd A Florin
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
- Division of Emergency Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
| | - Daniel J Tancredi
- Department of Pediatrics, University of California, Davis School of Medicine, Sacramento
| | - Jianling Xie
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Kelly Kim
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Yaron Finkelstein
- Division of Emergency Medicine, Department of Pediatrics, Hospital for Sick Children, Toronto, Ontario, Canada
- Division of Clinical Pharmacology and Toxicology, Department of Pediatrics, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Mark I Neuman
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts
- Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts
| | | | - Adriana Yock-Corrales
- Emergency Department, Hospital Nacional de Niños "Dr. Carlos Sáenz Herrera," CCSS, San José, Costa Rica
| | - Kristen A Breslin
- Department of Emergency Medicine and Trauma Services, Children's National Hospital, Washington, DC
| | - Lilliam Ambroggio
- Department of Pediatrics, University of Colorado, Aurora
- Section of Emergency Medicine, Children's Hospital Colorado, Aurora
| | - Pradip P Chaudhari
- Division of Emergency and Transport Medicine, Children's Hospital Los Angeles and Keck School of Medicine of the University of Southern California, Los Angeles
| | - Kelly R Bergmann
- Department of Emergency Medicine, Children's Minnesota, Minneapolis
| | - Michael A Gardiner
- Department of Pediatrics, University of California, San Diego, Rady Children's Hospital, San Diego
| | | | - Carmen Campos
- Pediatric Emergency Department, Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - Fahd A Ahmad
- Department of Pediatrics, Washington University in St Louis School of Medicine, St Louis, Missouri
| | - Laura F Sartori
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Nidhya Navanandan
- Department of Pediatrics, University of Colorado, Aurora
- Section of Emergency Medicine, Children's Hospital Colorado, Aurora
| | - Nirupama Kannikeswaran
- Division of Emergency Medicine, Children's Hospital of Michigan, Detroit
- Department of Pediatrics, Central Michigan University, Mt Pleasant
| | - Kerry Caperell
- Department of Pediatrics, University of Louisville, Louisville, Kentucky
- Department of Pediatrics, Norton Children's Hospital, Louisville, Kentucky
| | - Claudia R Morris
- Department of Pediatrics, Division of Pediatric Emergency Medicine, Emory University School of Medicine, Children's Healthcare of Atlanta, Atlanta, Georgia
| | - Santiago Mintegi
- Pediatric Emergency Department, Biocruces Bizkaia Health Research Institute, Hospital Universitario Cruces, University of the Basque Country, UPV/EHU Bilbao, Basque Country, Spain
| | - Iker Gangoiti
- Pediatric Emergency Department, Biocruces Bizkaia Health Research Institute, Hospital Universitario Cruces, University of the Basque Country, UPV/EHU Bilbao, Basque Country, Spain
| | - Vikram J Sabhaney
- Department of Paediatrics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Amy C Plint
- Division of Emergency Medicine, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
- Department of Pediatrics, University of Ottawa, Ottawa, Ontario, Canada
- Department of Emergency Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Terry P Klassen
- Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Usha R Avva
- Department of Emergency Medicine, Montefiore-Nyack Hospital, Nyack, New York
| | - Nipam P Shah
- Division of Pediatric Emergency Medicine, Department of Pediatrics, University of Alabama at Birmingham
| | - Andrew C Dixon
- University of Alberta, Stollery Children's Hospital, Women's and Children's Health Research Institute, Edmonton, Alberta, Canada
| | - Maren M Lunoe
- UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - Sarah M Becker
- Primary Children's Hospital, Intermountain Healthcare, Salt Lake City, Utah
| | - Alexander J Rogers
- Department of Emergency Medicine, University of Michigan School of Medicine, Ann Arbor
- Department of Pediatrics, University of Michigan School of Medicine, Ann Arbor
| | - Viviana Pavlicich
- Departamento de Emergencia Pediátrica, Hospital General Pediátrico Niños de Acosta Ñu, Facultad de Medicina, Universidad Privada del Pacífico, San Lorenzo, Paraguay
| | - Stuart R Dalziel
- Children's Emergency Department, Starship Children's Hospital, Auckland, New Zealand
- Department of Surgery, University of Auckland, Auckland, New Zealand
- Department of Paediatrics: Child and Youth Health, University of Auckland, Auckland, New Zealand
| | - Daniel C Payne
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Richard Malley
- Division of Infectious Diseases, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Meredith L Borland
- Emergency Department, Perth Children's Hospital, Perth, Western Australia
- Division of Emergency Medicine, School of Medicine, University of Western Australia, Perth, Australia
- Division of Paediatrics, School of Medicine, University of Western Australia, Perth, Australia
| | - Andrea K Morrison
- Division of Emergency Medicine, Department of Pediatrics, Medical College of Wisconsin, Milwaukee
| | - Maala Bhatt
- Department of Pediatrics, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Pedro B Rino
- Hospital de Pediatría "Prof Dr. Juan P. Garrahan," RIDEPLA, Buenos Aires, Argentina
| | | | - Michelle Eckerle
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
- Division of Pediatric Emergency Medicine, Cincinnati Children's Hospital, Cincinnati, Ohio
| | - April J Kam
- Department of Pediatrics, Division of Emergency Medicine, McMaster Children's Hospital, Hamilton, Ontario, Canada
| | - Shu-Ling Chong
- Department of Emergency Medicine, KK Women's and Children's Hospital, Duke-NUS Medical School, SingHealth Duke-NUS Global Health Institute, Singapore
| | - Laura Palumbo
- ASST Spedali Civili di Brescia-Pronto soccorso pediatrico, Brescia, Italy
| | - Maria Y Kwok
- Department of Emergency Medicine, New York Presbyterian Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, New York, New York
| | - Jonathan C Cherry
- Department of Pediatric Emergency Medicine, IWK Health Centre, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Naveen Poonai
- Department of Pediatrics, Schulich School of Medicine & Dentistry, London, Ontario, Canada
| | - Muhammad Waseem
- Department of Emergency Medicine, Lincoln Medical Center, New York, New York
| | - Norma-Jean Simon
- Division of Emergency Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
- Data Analytics and Reporting, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
| | - Stephen B Freedman
- Section of Pediatric Emergency Medicine, Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Section of Gastroenterology, Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Emergency Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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4
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Funk AL, Florin TA, Kuppermann N, Tancredi DJ, Xie J, Kim K, Neuman MI, Ambroggio L, Plint AC, Mintegi S, Klassen TP, Salvadori MI, Malley R, Payne DC, Simon NJ, Yock-Corrales A, Nebhrajani JR, Chaudhari PP, Breslin KA, Finkelstein Y, Campos C, Bergmann KR, Bhatt M, Ahmad FA, Gardiner MA, Avva UR, Shah NP, Sartori LF, Sabhaney VJ, Caperell K, Navanandan N, Borland ML, Morris CR, Gangoiti I, Pavlicich V, Kannikeswaran N, Lunoe MM, Rino PB, Kam AJ, Cherry JC, Rogers AJ, Chong SL, Palumbo L, Angelats CM, Morrison AK, Kwok MY, Becker SM, Dixon AC, Poonai N, Eckerle M, Wassem M, Dalziel SR, Freedman SB. Outcomes of SARS-CoV-2-Positive Youths Tested in Emergency Departments: The Global PERN-COVID-19 Study. JAMA Netw Open 2022; 5:e2142322. [PMID: 35015063 PMCID: PMC8753506 DOI: 10.1001/jamanetworkopen.2021.42322] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
IMPORTANCE Severe outcomes among youths with SARS-CoV-2 infections are poorly characterized. OBJECTIVE To estimate the proportion of children with severe outcomes within 14 days of testing positive for SARS-CoV-2 in an emergency department (ED). DESIGN, SETTING, AND PARTICIPANTS This prospective cohort study with 14-day follow-up enrolled participants between March 2020 and June 2021. Participants were youths aged younger than 18 years who were tested for SARS-CoV-2 infection at one of 41 EDs across 10 countries including Argentina, Australia, Canada, Costa Rica, Italy, New Zealand, Paraguay, Singapore, Spain, and the United States. Statistical analysis was performed from September to October 2021. EXPOSURES Acute SARS-CoV-2 infection was determined by nucleic acid (eg, polymerase chain reaction) testing. MAIN OUTCOMES AND MEASURES Severe outcomes, a composite measure defined as intensive interventions during hospitalization (eg, inotropic support, positive pressure ventilation), diagnoses indicating severe organ impairment, or death. RESULTS Among 3222 enrolled youths who tested positive for SARS-CoV-2 infection, 3221 (>99.9%) had index visit outcome data available, 2007 (62.3%) were from the United States, 1694 (52.6%) were male, and 484 (15.0%) had a self-reported chronic illness; the median (IQR) age was 3 (0-10) years. After 14 days of follow-up, 735 children (22.8% [95% CI, 21.4%-24.3%]) were hospitalized, 107 (3.3% [95% CI, 2.7%-4.0%]) had severe outcomes, and 4 children (0.12% [95% CI, 0.03%-0.32%]) died. Characteristics associated with severe outcomes included being aged 5 to 18 years (age 5 to <10 years vs <1 year: odds ratio [OR], 1.60 [95% CI, 1.09-2.34]; age 10 to <18 years vs <1 year: OR, 2.39 [95% CI 1.38-4.14]), having a self-reported chronic illness (OR, 2.34 [95% CI, 1.59-3.44]), prior episode of pneumonia (OR, 3.15 [95% CI, 1.83-5.42]), symptoms starting 4 to 7 days prior to seeking ED care (vs starting 0-3 days before seeking care: OR, 2.22 [95% CI, 1.29-3.82]), and country (eg, Canada vs US: OR, 0.11 [95% CI, 0.05-0.23]; Costa Rica vs US: OR, 1.76 [95% CI, 1.05-2.96]; Spain vs US: OR, 0.51 [95% CI, 0.27-0.98]). Among a subgroup of 2510 participants discharged home from the ED after initial testing and who had complete follow-up, 50 (2.0%; 95% CI, 1.5%-2.6%) were eventually hospitalized and 12 (0.5%; 95% CI, 0.3%-0.8%) had severe outcomes. Compared with hospitalized SARS-CoV-2-negative youths, the risk of severe outcomes was higher among hospitalized SARS-CoV-2-positive youths (risk difference, 3.9%; 95% CI, 1.1%-6.9%). CONCLUSIONS AND RELEVANCE In this study, approximately 3% of SARS-CoV-2-positive youths tested in EDs experienced severe outcomes within 2 weeks of their ED visit. Among children discharged home from the ED, the risk was much lower. Risk factors such as age, underlying chronic illness, and symptom duration may be useful to consider when making clinical care decisions.
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Affiliation(s)
- Anna L. Funk
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Todd A. Florin
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
- Division of Emergency Medicine, Ann and Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois
| | - Nathan Kuppermann
- Departments of Emergency Medicine and Pediatrics, University of California, Davis School of Medicine, Sacramento
| | - Daniel J. Tancredi
- Department of Pediatrics, University of California, Davis School of Medicine, Sacramento
| | - Jianling Xie
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Kelly Kim
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Mark I. Neuman
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts
- Division of Emergency Medicine, Boston Children’s Hospital, Boston, Massachusetts
| | - Lilliam Ambroggio
- Section of Emergency Medicine, Children’s Hospital Colorado, Department of Pediatrics, University of Colorado, Aurora
| | - Amy C. Plint
- Children’s Hospital of Eastern Ontario, Division of Emergency Medicine, Departments of Pediatrics and Emergency Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Santiago Mintegi
- Pediatric Emergency Department, Biocruces Bizkaia Health Research Institute, Hospital Universitario Cruces, University of the Basque Country, UPV/EHU, Bilbao, Basque Country, Spain
| | - Terry P. Klassen
- Children’s Hospital Research Institute of Manitoba, Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba, Canada
| | | | - Richard Malley
- Division of Infectious Diseases, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Daniel C. Payne
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Norma-Jean Simon
- Data Analytics and Reporting, Division of Emergency Medicine, Ann and Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois
| | | | | | - Pradip P. Chaudhari
- Division of Emergency and Transport Medicine, Children’s Hospital Los Angeles, Los Angeles, California
- Keck School of Medicine of the University of Southern California, Los Angeles, California
| | | | - Yaron Finkelstein
- Divisions of Emergency Medicine and Clinical Pharmacology and Toxicology, Department of Pediatrics Hospital for Sick Children, Toronto, Ontario, Canada
| | - Carmen Campos
- Hospital Universitario Miguel Servet, Pediatric Emergency Department, Zaragoza, Spain
| | - Kelly R. Bergmann
- Department of Emergency Medicine, Children’s Minnesota, Minneapolis, Minnesota
| | - Maala Bhatt
- Department of Pediatrics, Children’s Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Fahd A. Ahmad
- Department of Pediatrics, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Michael A. Gardiner
- Rady Children’s Hospital, Department of Pediatrics, University of California, San Diego, San Diego, California
| | - Usha R. Avva
- School of Medicine Hackensack Meridian Health, Hackensack, New Jersey
| | - Nipam P. Shah
- Division of Pediatric Emergency Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham
| | - Laura F. Sartori
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Vikram J. Sabhaney
- Department of Paediatrics, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Kerry Caperell
- Norton Children’s Hospital, University of Louisville, Louisville, Kentucky
| | - Nidhya Navanandan
- Section of Emergency Medicine, Children’s Hospital Colorado, Department of Pediatrics, University of Colorado, Aurora
| | - Meredith L. Borland
- Perth Children’s Hospital, Divisions of Emergency Medicine and Paediatrics, School of Medicine, University of Western Australia, Perth, Western Australia, Australia
| | - Claudia R. Morris
- Department of Pediatrics, Division of Emergency Medicine, Emory University School of Medicine, Children’s Healthcare of Atlanta, Atlanta, Georgia
| | - Iker Gangoiti
- Pediatric Emergency Department, Biocruces Bizkaia Health Research Institute, Hospital Universitario Cruces, University of the Basque Country, UPV/EHU, Bilbao, Basque Country, Spain
| | - Viviana Pavlicich
- Departamento de Emergencia Pediátrica, Hospital General Pediátrico Niños de Acosta Ñu, Facultad de Medicina, Universidad Privada del Pacífico, San Lorenzo, Paraguay
| | | | - Maren M. Lunoe
- UPMC Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - Pedro B. Rino
- Hospital de Pediatría “Prof Dr Juan P. Garrahan”, RIDEPLA, Buenos Aires, Argentina
| | - April J. Kam
- Department of Pediatrics, Division of Emergency Medicine, McMaster Children’s Hospital, Hamilton, Ontario, Canada
| | - Jonathan C. Cherry
- Department of Pediatric Emergency Medicine, IWK Health Centre, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Alexander J. Rogers
- Departments of Emergency Medicine and Pediatrics, University of Michigan School of Medicine, Ann Arbor
| | - Shu-Ling Chong
- Department of Emergency Medicine, KK Women’s and Children’s Hospital, Duke-NUS Medical School, SingHealth Duke-NUS Global Health Institute, Singapore
| | - Laura Palumbo
- ASST Spedali Civili di Brescia - Pronto soccorso pediatrico, Brescia, Italy
| | | | - Andrea K. Morrison
- Division of Emergency Medicine, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Maria Y. Kwok
- Department of Emergency Medicine, New York Presbyterian Morgan Stanley Children’s Hospital, Columbia University Irving Medical Center, New York
| | - Sarah M. Becker
- University of Utah School of Medicine and Primary Children’s Hospital, Salt Lake City, Utah
| | - Andrew C. Dixon
- University of Alberta, Stollery Children’s Hospital, Women’s and Children’s Health Research Institute, Edmonton, Alberta, Canada
| | - Naveen Poonai
- Child Health Research Institute, Division of Paediatric Emergency Medicine, Departments of Pediatrics, Internal Medicine, Epidemiology and Biostatistics, Schulich School of Medicine & Dentistry, London, Ontario, Canada
| | - Michelle Eckerle
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
- Division of Pediatric Emergency Medicine, Cincinnati Children’s Hospital, Cincinnati, Ohio
| | | | - Stuart R. Dalziel
- Children’s Emergency Department, Starship Children’s Hospital, Auckland, New Zealand
- Departments of Surgery and Paediatrics: Child and Youth Health, University of Auckland, Auckland, New Zealand
| | - Stephen B. Freedman
- Sections of Pediatric Emergency Medicine and Gastroenterology, Departments of Pediatrics and Emergency Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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Koirala S, Shah NP, Pyakurel P, Khanal M, Rajbhandari SK, Pun T, Shrestha B, Maharjan B, Karki S, Koirala S, Tamang KB, Roggi A, Kumar AMV, Ortuño-Gutiérrez N. High success and low recurrence with shorter treatment regimen for multidrug-resistant TB in Nepal. Public Health Action 2021; 11:38-45. [PMID: 34778014 PMCID: PMC8575385 DOI: 10.5588/pha.21.0041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/30/2021] [Indexed: 11/22/2022] Open
Abstract
SETTING: Nine drug-resistant TB centres, some of them supported by Damien Foundation in Nepal where >80% of multidrug-resistant/rifampicin-resistant TB (MDR/RR-TB) patients are treated. OBJECTIVE: To assess the uptake, effectiveness and safety of the 9–12-month shorter treatment regimen (STR) in MDR/RR-TB patients registered from January 2018 to December 2019. DESIGN: This was a cohort study involving secondary programme data. RESULTS: Of 631 patients, 301 (48.0%) started and continued STR. Key reasons for ineligibility to start/continue STR were baseline resistance or exposure to second-line drugs (62.0%), contact with extensively drug-resistant TB (XDR-TB) or pre-XDR-TB (7.0%) patients and unavailability of STR drugs (6.0%). Treatment success was 79.6%; unsuccessful outcomes were death (12.0%), lost to follow-up (5.3%), failure (2.7%) and not evaluated (0.7%). Unsuccessful outcomes were significantly associated with HIV positivity and patient age ⩾55 years, with adjusted relative risk of respectively 2.39 (95% CI 1.52–3.77) and 3.86 (95% CI 2.30–6.46). Post-treatment recurrence at 6 and 12 months was respectively 0.5% and 2.4%. Serious adverse events (SAEs) were seen in 15.3% patients — hepatotoxicity and ototoxicity were most common. CONCLUSION: STR had a modest uptake, high treatment success and low post-treatment recurrence. For proper detection and management of SAEs, improving pharmacovigilance might be considered. Availability of rapid diagnostic test for second-line drugs is crucial for correct patient management.
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Affiliation(s)
| | - N P Shah
- National TB Control Center, Bhaktapur, Nepal
| | - P Pyakurel
- School of Public Health and Community Medicine, B P Koirala Institute of Health Sciences, Dharan, Nepal
| | - M Khanal
- National TB Control Center, Bhaktapur, Nepal
| | - S K Rajbhandari
- Sukra Raj Tropical and Infectious Disease Hospital, Kathmandu, Nepal
| | - T Pun
- National TB Control Center, Bhaktapur, Nepal
| | - B Shrestha
- German Nepal Tuberculosis Project, Nepal Anti TB Association (NATA), Kathmandu, Nepal
| | - B Maharjan
- National TB Control Center, Bhaktapur, Nepal
| | - S Karki
- German Nepal Tuberculosis Project, Nepal Anti TB Association (NATA), Kathmandu, Nepal
| | - S Koirala
- Yeti Health Science Academy, Kathmandu, Nepal
| | - K B Tamang
- Lalgadh Leprosy Hospital and Service Center, Dhanusa, Nepal
| | - A Roggi
- Damien Foundation Belgium, Brussels, Belgium
| | - A M V Kumar
- International Union Against Tuberculosis and Lung Disease (The Union), Paris, France.,The Union, South-East Asia Office, New Delhi, India.,Yenepoya Medical College, Yenepoya (deemed University), Mangaluru, India
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Abstract
BACKGROUND Belimumab, the first biologic approved for the treatment of systemic lupus erythematosus (SLE), has been shown to reduce autoantibody levels in people with SLE and help control disease activity. OBJECTIVES To assess the benefits and harms of belimumab (alone or in combination) in systematic lupus erythematosus. SEARCH METHODS An Information Specialist carried out the searches of CENTRAL, MEDLINE, Embase, CINAHL, Web of Science, the World Health Organization (WHO) International Clinical Trials Registry Platform, and clinicaltrials.gov from inception to 25 September 2019. There were no language or date restrictions. SELECTION CRITERIA We included randomized controlled trials (RCTs) or controlled clinical trials (CCTs) of belimumab (alone or in combination) compared to placebo/control treatment (immunosuppressive drugs, such as azathioprine, cyclosporine, mycophenolate mofetil or another biologic), in adults with SLE. DATA COLLECTION AND ANALYSIS We used standard methodologic procedures expected by Cochrane. MAIN RESULTS Six RCTs (2917 participants) qualified for quantitative analyses. All included studies were multicenter, international or US-based. The age range of the included participants was 22 to 80 years; most were women; and study duration ranged from 84 days to 76 weeks. The risk of bias was generally low except for attrition bias, which was high in 67% of studies. Compared to placebo, more participants on belimumab 10 mg/kg (Food and Drug Administration (FDA)-approved dose) showed at least a 4-point improvement (reduction) in Safety of Estrogen in Lupus National Assessment (SELENA) - Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) score, a validated SLE disease activity index: (risk ratio (RR) 1.33, 95% confidence interval (CI) 1.22 to 1.45; 829/1589 in belimumab group and 424/1077 in placebo; I2= 0%; 4 RCTs; high-certainty evidence). Change in health-related quality of life (HRQOL), assessed by Short Form-36 Physical Component Summary score improvement (range 0 to 100), showed there was probably little or no difference between groups (mean difference 1.6 points, 95% CI 0.30 to 2.90; 401 in belimumab group and 400 in placebo; I2= 0%; 2 RCTs; moderate-certainty evidence). The belimumab 10 mg/kg group showed greater improvement in glucocorticoid dose, with a higher proportion of participants reducing their dose by at least 50% compared to placebo (RR 1.59, 95% CI 1.17 to 2.15; 81/269 in belimumab group and 52/268 in placebo; I2= 0%; 2 RCTs; high-certainty evidence). The proportion of participants experiencing harm may not differ meaningfully between the belimumab 10 mg/kg and placebo groups: one or more serious adverse event (RR 0.87, 95% CI: 0.68 to 1.11; 238/1700 in belimumab group and 199/1190 in placebo; I2= 48%; 5 RCTs; low-certainty evidence; ); one or more serious infection (RR 1.01, 95% CI: 0.66 to 1.54; 44/1230 in belimumab group and 40/955 in placebo; I2= 0%; 4 RCTs; moderate-certainty evidence); and withdrawals due to adverse events (RR 0.82, 95% CI: 0.63 to 1.07; 113/1700 in belimumab group and 94/1190 in placebo; I2= 0%; 5 RCTs; moderate-certainty evidence). Mortality was rare, and may not differ between belimumab 10 mg/kg and placebo (Peto odds ratio 1.15, 95% CI 0.41 to 3.25; 9/1714 in belimumab group and 6/1203 in placebo; I2= 4%; 6 RCTs; low-certainty evidence). AUTHORS' CONCLUSIONS The six studies that provided evidence for benefits and harms of belimumab were well-designed, high-quality RCTs. At the FDA-approved dose of 10 mg/kg, based on moderate to high-certainty data, belimumab was probably associated with a clinically meaningful efficacy benefit compared to placebo in participants with SLE at 52 weeks. Evidence related to harms is inconclusive and mostly of moderate to low-certainty evidence. More data are needed for the longer-term efficacy of belimumab.
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Affiliation(s)
- Jasvinder A Singh
- Department of Medicine, Birmingham VA Medical Center, Birmingham, AL, USA
| | - Nipam P Shah
- Department of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Amy S Mudano
- Department of Medicine - Rheumatology, University of Alabama at Birmingham, Birmingham, USA
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7
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Abstract
The aims of this study were to find the incidence of bifurcation of the inferior dental nerve (IDN) canal, to describe the characteristics of this variant, and to examine the sensitivity and specificity of dental panoramic tomography to identify it. We classified bifurcations by size and position relative to the main canal and the lower third molar using cone-beam computed tomography (CT) and dental panoramic tomography. In our study of 281 patients, 106 (38%) had bifurcations, and in one quarter, these were classified as large accessory canals. Bifurcations were most commonly found posterior to the lower third molar (n=64, 57%) or within 2mm of the roots of the third molar (n=40, 38%). The sensitivity and specificity of dental panoramic tomography to identify all bifurcations was 11% (95% CI: 5.67 to 17.97) and 91% (95% CI: 85.58 to 94.68), respectively; this was 33% (95% CI: 15.63 to 55.32) and 94% (95% CI: 90.34 to 96.50), respectively, for large bifurcations. Our use of cone-beam CT suggested an incidence of bifid canals of 38%, with a variation in size and distribution in relation to the lower third molar. It also showed that the sensitivity of panoramic radiography to identify them was poor.
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Affiliation(s)
- N P Shah
- Department of Oral Surgery, Royal London Hospital, London E1 1BB, UK; Department of Oral Surgery, Guy's Hospital, London SE1 9RT, UK.
| | - L Murtadha
- Department of Oral Surgery, Guy's Hospital, London SE1 9RT, UK.
| | - J Brown
- Department of Dental and Maxillofacial Radiology, Guy's Hospital, London SE1 9RT, UK.
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le Coutre PD, Hughes TP, Mahon FX, Kim DW, Steegmann JL, Shah NP, Gooden K, Wallis N, Cortes JE. Low incidence of peripheral arterial disease in patients receiving dasatinib in clinical trials. Leukemia 2016; 30:1593-6. [PMID: 26686247 PMCID: PMC4935977 DOI: 10.1038/leu.2015.352] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- P D le Coutre
- Charité, Campus Virchow Klinikum, Medizinische Klinik m.S. Hämatologie und Onkologie, Universitätsmedizin Berlin, Berlin, Germany
| | - T P Hughes
- Cancer Theme, South Australian Health and Medical Research Institute (SAHMRI), Department of Haematology, SA Pathology, University of Adelaide, Adelaide, South Australia, Australia
| | - F-X Mahon
- Centre Hospitalier Universitaire de Bordeaux, Laboratoire d'Hématologie et Service des Maladies du Sang, Bordeaux et Institut Bergonié, Bordeaux, France
| | - D-W Kim
- Division of Hematology, Seoul St Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - J L Steegmann
- Department of Hematology and IIS-IP, Hospital Universitario de la Princesa, Madrid, Spain
| | - N P Shah
- Department of Medicine, Division of Hematology/Oncology, University of California at San Francisco School of Medicine, San Francisco, CA, USA
| | - K Gooden
- Bristol-Myers Squibb, Princeton, NJ, USA
| | - N Wallis
- Bristol-Myers Squibb, Princeton, NJ, USA
| | - J E Cortes
- Division of Cancer Medicine, Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA
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Singh JA, Hossain A, Tanjong Ghogomu E, Kotb A, Christensen R, Mudano AS, Maxwell LJ, Shah NP, Tugwell P, Wells GA. Biologics or tofacitinib for rheumatoid arthritis in incomplete responders to methotrexate or other traditional disease-modifying anti-rheumatic drugs: a systematic review and network meta-analysis. Cochrane Database Syst Rev 2016; 2016:CD012183. [PMID: 27175934 PMCID: PMC7068903 DOI: 10.1002/14651858.cd012183] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND This is an update of the 2009 Cochrane overview and network meta-analysis (NMA) of biologics for rheumatoid arthritis (RA). OBJECTIVES To assess the benefits and harms of nine biologics (abatacept, adalimumab, anakinra, certolizumab pegol, etanercept, golimumab, infliximab, rituximab, tocilizumab) and small molecule tofacitinib, versus comparator (MTX, DMARD, placebo (PL), or a combination) in adults with rheumatoid arthritis who have failed to respond to methotrexate (MTX) or other disease-modifying anti-rheumatic drugs (DMARDs), i.e., MTX/DMARD incomplete responders (MTX/DMARD-IR). METHODS We searched for randomized controlled trials (RCTs) in the Cochrane Central Register of Controlled Trials (CENTRAL) (via The Cochrane Library Issue 6, June 2015), MEDLINE (via OVID 1946 to June 2015), and EMBASE (via OVID 1947 to June 2015). Data extraction, risk of bias and GRADE assessments were done in duplicate. We calculated both direct estimates using standard meta-analysis and used Bayesian mixed treatment comparisons approach for NMA estimates to calculate odds ratios (OR) and 95% credible intervals (CrI). We converted OR to risk ratios (RR) which are reported in the abstract for the ease of interpretation. MAIN RESULTS This update included 73 new RCTs for a total of 90 RCTs; 79 RCTs with 32,874 participants provided usable data. Few trials were at high risk of bias for blinding of assessors/participants (13% to 21%), selective reporting (4%) or major baseline imbalance (8%); a large number had unclear risk of bias for random sequence generation (68%) or allocation concealment (74%).Based on direct evidence of moderate quality (downgraded for inconsistency), biologic+MTX/DMARD was associated with a statistically significant and clinically meaningful improvement in ACR50 versus comparator (RR 2.71 (95% confidence interval (CI) 2.36 to 3.10); absolute benefit 24% more patients (95% CI 19% to 29%), number needed to treat for an additional beneficial outcome (NNTB) = 5 (4 to 6). NMA estimates for ACR50 in tumor necrosis factor (TNF) biologic+MTX/DMARD (RR 3.23 (95% credible interval (Crl) 2.75 to 3.79), non-TNF biologic+MTX/DMARD (RR 2.99; 95% Crl 2.36 to 3.74), and anakinra + MTX/DMARD (RR 2.37 (95% Crl 1.00 to 4.70) were similar to the direct estimates.Based on direct evidence of moderate quality (downgraded for inconsistency), biologic+MTX/DMARD was associated with a clinically and statistically important improvement in function measured by the Health Assessment Questionnaire (0 to 3 scale, higher = worse function) with a mean difference (MD) based on direct evidence of -0.25 (95% CI -0.28 to -0.22); absolute benefit of -8.3% (95% CI -9.3% to -7.3%), NNTB = 3 (95% CI 2 to 4). NMA estimates for TNF biologic+MTX/DMARD (absolute benefit, -10.3% (95% Crl -14% to -6.7%) and non-TNF biologic+MTX/DMARD (absolute benefit, -7.3% (95% Crl -13.6% to -0.67%) were similar to respective direct estimates.Based on direct evidence of moderate quality (downgraded for inconsistency), biologic+MTX/DMARD was associated with clinically and statistically significantly greater proportion of participants achieving remission in RA (defined by disease activity score DAS < 1.6 or DAS28 < 2.6) versus comparator (RR 2.81 (95% CI, 2.23 to 3.53); absolute benefit 18% more patients (95% CI 12% to 25%), NNTB = 6 (4 to 9)). NMA estimates for TNF biologic+MTX/DMARD (absolute improvement 17% (95% Crl 11% to 23%)) and non-TNF biologic+MTX/DMARD (absolute improvement 19% (95% Crl 12% to 28%) were similar to respective direct estimates.Based on direct evidence of moderate quality (downgraded for inconsistency), radiographic progression (scale 0 to 448) was statistically significantly reduced in those on biologics + MTX/DMARDs versus comparator, MD -2.61 (95% CI -4.08 to -1.14). The absolute reduction was small, -0.58% (95% CI -0.91% to -0.25%) and we are unsure of the clinical relevance of this reduction. NMA estimates of TNF biologic+MTX/DMARD (absolute reduction -0.67% (95% Crl -1.4% to -0.12%) and non-TNF biologic+MTX/DMARD (absolute reduction, -0.68% (95% Crl -2.36% to 0.92%)) were similar to respective direct estimates.Based on direct evidence of moderate quality (downgraded for imprecision), results for withdrawals due to adverse events were inconclusive, with wide confidence intervals encompassing the null effect and evidence of an important increase in withdrawals, RR 1.11 (95% CI 0.96 to 1.30). The NMA estimates of TNF biologic+MTX/DMARD (RR 1.24 (95% Crl 0.99 to 1.57)) and non-TNF biologic+MTX/DMARD (RR 1.20 (95% Crl 0.87 to 1.67)) were similarly inconclusive and downgraded to low for both imprecision and indirectness.Based on direct evidence of high quality, biologic+MTX/DMARD was associated with clinically significantly increased risk (statistically borderline significant) of serious adverse events on biologic+MTX/DMARD (Peto OR [can be interpreted as RR due to low event rate] 1.12 (95% CI 0.99 to 1.27); absolute risk 1% (0% to 2%), As well, the NMA estimate for TNF biologic+MTX/DMARD (Peto OR 1.20 (95% Crl 1.01 to 1.43)) showed moderate quality evidence of an increase in the risk of serious adverse events. The other two NMA estimates were downgraded to low quality due to imprecision and indirectness and had wide confidence intervals resulting in uncertainty around the estimates: non-TNF biologics + MTX/DMARD: 1.07 (95% Crl 0.89 to 1.29) and anakinra: RR 1.06 (95% Crl 0.65 to 1.75).Based on direct evidence of low quality (downgraded for serious imprecision), results were inconclusive for cancer (Peto OR 1.07 (95% CI 0.68 to 1.68) for all biologic+MTX/DMARD combinations. The NMA estimates of TNF biologic+MTX/DMARD (Peto OR 1.21 (95% Crl 0.63 to 2.38) and non-TNF biologic+MTX/DMARD (Peto OR 0.99 (95% Crl 0.58 to 1.78)) were similarly inconclusive and downgraded to low quality for both imprecision and indirectness.Main results text shows the results for tofacitinib and differences between medications. AUTHORS' CONCLUSIONS Based primarily on RCTs of 6 months' to 12 months' duration, there is moderate quality evidence that the use of biologic+MTX/DMARD in people with rheumatoid arthritis who have failed to respond to MTX or other DMARDs results in clinically important improvement in function and higher ACR50 and remission rates, and increased risk of serious adverse events than the comparator (MTX/DMARD/PL; high quality evidence). Radiographic progression is slowed but its clinical relevance is uncertain. Results were inconclusive for whether biologics + MTX/DMARDs are associated with an increased risk of cancer or withdrawals due to adverse events.
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Affiliation(s)
- Jasvinder A Singh
- Birmingham VA Medical CenterDepartment of MedicineFaculty Office Tower 805B510 20th Street SouthBirminghamALUSA35294
| | - Alomgir Hossain
- University of Ottawa Heart InstituteCardiovascular Research Methods Centre40 Ruskin StreetRoom H‐2265OttawaONCanadaK1Y 4W7
| | | | - Ahmed Kotb
- University of Ottawa Heart InstituteCardiovascular Research Methods Centre40 Ruskin StreetRoom H‐2265OttawaONCanadaK1Y 4W7
| | - Robin Christensen
- Copenhagen University Hospital, Bispebjerg og FrederiksbergMusculoskeletal Statistics Unit, The Parker InstituteNordre Fasanvej 57CopenhagenDenmarkDK‐2000
| | - Amy S Mudano
- University of Alabama at BirminghamDepartment of Medicine ‐ RheumatologyBirminghamUSA
| | - Lara J Maxwell
- Ottawa Hospital Research Institute (OHRI), The Ottawa Hospital ‐ General CampusCentre for Practice‐Changing Research (CPCR)501 Smyth Road, Box 711OttawaONCanadaK1H 8L6
| | - Nipam P Shah
- University of Alabama at BirminghamDepartment of Clinical Immunology and RheumatologyFaculty Office Tower, Suite 805, 510 20th Street SouthBirminghamALUSA35294
| | - Peter Tugwell
- Faculty of Medicine, University of OttawaDepartment of MedicineOttawaONCanadaK1H 8M5
| | - George A Wells
- University of OttawaDepartment of Epidemiology and Community MedicineRoom H128140 Ruskin StreetOttawaONCanadaK1Y 4W7
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10
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Nybakken GE, Canaani J, Roy D, Morrissette JD, Watt CD, Shah NP, Smith CC, Bagg A, Carroll M, Perl AE. Quizartinib elicits differential responses that correlate with karyotype and genotype of the leukemic clone. Leukemia 2015; 30:1422-5. [PMID: 26585411 DOI: 10.1038/leu.2015.320] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- G E Nybakken
- Department of Pathology, Kaiser Permanente Santa Clara, CA, USA
| | - J Canaani
- Division of Hematology and Oncology, University of Pennsylvania, Philadelphia, PA, USA
| | - D Roy
- Department of Pathology, Rowan University, Glassboro, NJ, USA
| | - J D Morrissette
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - C D Watt
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - N P Shah
- Department of Medicine, Division of Hematology/Oncology, University of California, San Francisco, San Francisco, CA, USA
| | - C C Smith
- Department of Medicine, Division of Hematology/Oncology, University of California, San Francisco, San Francisco, CA, USA
| | - A Bagg
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - M Carroll
- Division of Hematology and Oncology, University of Pennsylvania, Philadelphia, PA, USA.,Philadelphia Veterans Hospital, Philadelphia, PA, USA
| | - A E Perl
- Division of Hematology and Oncology, University of Pennsylvania, Philadelphia, PA, USA
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Lasater EA, Massi ES, Stecula A, Politi J, Tan SK, Smith CC, Gunthorpe M, Holmes JP, Chehab F, Sali A, Shah NP. Novel TKI-resistant BCR-ABL1 gatekeeper residue mutations retain in vitro sensitivity to axitinib. Leukemia 2015; 30:1405-9. [PMID: 26511402 DOI: 10.1038/leu.2015.303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- E A Lasater
- Division of Hematology/Oncology, University of California, San Francisco, CA, USA
| | - E S Massi
- Division of Hematology/Oncology, University of California, San Francisco, CA, USA
| | - A Stecula
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA, USA
| | - J Politi
- Division of Hematology/Oncology, University of California, San Francisco, CA, USA
| | - S K Tan
- Division of Hematology/Oncology, University of California, San Francisco, CA, USA
| | - C C Smith
- Division of Hematology/Oncology, University of California, San Francisco, CA, USA
| | - M Gunthorpe
- Department of Laboratory Medicine, University of California, San Francisco, CA, USA
| | - J P Holmes
- Annadel Medical Group, Santa Rosa, CA, USA
| | - F Chehab
- Department of Laboratory Medicine, University of California, San Francisco, CA, USA
| | - A Sali
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA, USA.,Department of Pharmaceutical Chemistry, University of California, San Francisco, CA, USA.,California Institute for Quantitative Biosciences, University of California, San Francisco, CA, USA
| | - N P Shah
- Division of Hematology/Oncology, University of California, San Francisco, CA, USA.,Helen Diller Comprehensive Cancer Center, University of California, San Francisco, CA, USA
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12
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Smith CC, Lin K, Stecula A, Sali A, Shah NP. FLT3 D835 mutations confer differential resistance to type II FLT3 inhibitors. Leukemia 2015; 29:2390-2. [PMID: 26108694 PMCID: PMC4675689 DOI: 10.1038/leu.2015.165] [Citation(s) in RCA: 141] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 06/01/2015] [Accepted: 06/02/2015] [Indexed: 12/04/2022]
Affiliation(s)
- C C Smith
- Division of Hematology/Oncology, University of California, San Francisco, CA, USA.,Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA, USA
| | - K Lin
- Division of Hematology/Oncology, University of California, San Francisco, CA, USA
| | - A Stecula
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA, USA
| | - A Sali
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA, USA.,California Institute for Quantitative Biosciences, University of California, San Francisco, CA, USA.,Department of Pharmaceutical Chemistry, University of California, San Francisco, CA, USA
| | - N P Shah
- Division of Hematology/Oncology, University of California, San Francisco, CA, USA.,Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, CA, USA
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Abstract
Alcohol is widely consumed by the majority of the UK population and alcohol-related harm is estimated to cost society £21 billion per year in healthcare, lost productivity costs, crime and antisocial behaviour. The dental setting offers an ideal opportunity to screen for harmful alcohol consumption; however, current emphasis is on the management of acute complications and risk associated in treating patients with excessive alcohol intake rather than screening and patient education. This article outlines ways in which dentists could improve their recognition of 'at risk' patients and then offer practical advice to help reduce the harmful effects of alcohol.
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Affiliation(s)
| | | | - M McGurk
- King's College London Dental Institute
| | - A Maroo
- GPT, Hillingdon Hospital, Middlesex, UB8 3NN
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14
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Morris RT, Joyrich RN, Naumann RW, Shah NP, Maurer AH, Strauss HW, Uszler JM, Symanowski JT, Ellis PR, Harb WA. Phase II study of treatment of advanced ovarian cancer with folate-receptor-targeted therapeutic (vintafolide) and companion SPECT-based imaging agent (99mTc-etarfolatide). Ann Oncol 2014; 25:852-858. [PMID: 24667717 DOI: 10.1093/annonc/mdu024] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023] Open
Abstract
BACKGROUND This report examines (99m)Tc-etarfolatide imaging to identify the presence of folate receptor (FR) on tumors of women with recurrent/refractory ovarian or endometrial cancer and correlates expression with response to FR-targeted therapy (vintafolide). PATIENTS AND METHODS In this phase II, single-arm, multicenter study, patients with advanced ovarian cancer were imaged with (99m)Tc-etarfolatide before vintafolide treatment. Up to 10 target lesions (TLs) were selected based on Response Evaluation Criteria In Solid Tumors criteria using computed tomography scans. Single-photon emission computed tomography images of TLs were assessed for (99m)Tc-etarfolatide uptake as either FR positive or negative. Patients were categorized by percentage of TLs positive and grouped as FR(100%), FR(10%-90%), and FR(0%). Lesion and patient response were correlated with etarfolatide uptake. RESULTS Forty-nine patients were enrolled; 43 were available for analysis. One hundred thirty-nine lesions were (99m)Tc-etarfolatide evaluable: 110 FR positive and 29 FR negative. Lesion disease control rate (DCR = stable or response) was observed in 56.4% of FR-positive lesions versus 20.7% of FR-negative lesions (P < 0.001). Patient DCR was 57%, 36%, and 33% in FR(100%), FR(10%-90%), and FR(0%) patients, respectively. Median overall survival was 14.6, 9.6, and 3.0 months in FR(100%), FR(10%-90%), and FR(0%) patients, respectively. CONCLUSIONS Overall response to FR-targeted therapy and DCR correlate with FR positivity demonstrated by (99m)Tc-etarfolatide imaging. CLINICAL TRIAL NUMBER NCT00507741.
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Affiliation(s)
| | - R N Joyrich
- Detroit Medical Center, Wayne State University, Detroit
| | | | - N P Shah
- Charlotte Radiology, Carolinas Medical Center, Charlotte
| | - A H Maurer
- Temple University Hospital, Philadelphia
| | - H W Strauss
- Memorial Sloan-Kettering Cancer Center, New York
| | - J M Uszler
- Saint John's Health Center, Santa Monica
| | | | | | - W A Harb
- Horizon Oncology Research, Lafayette, USA
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15
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Morris RT, Joyrich RN, Naumann RW, Shah NP, Maurer AH, Strauss HW, Uszler JM, Symanowski JT, Ellis PR, Harb WA. Phase II study of treatment of advanced ovarian cancer with folate-receptor-targeted therapeutic (vintafolide) and companion SPECT-based imaging agent (99mTc-etarfolatide). Ann Oncol 2014. [PMID: 24667717 DOI: 10.1093/annonc/mdu024] [] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND This report examines (99m)Tc-etarfolatide imaging to identify the presence of folate receptor (FR) on tumors of women with recurrent/refractory ovarian or endometrial cancer and correlates expression with response to FR-targeted therapy (vintafolide). PATIENTS AND METHODS In this phase II, single-arm, multicenter study, patients with advanced ovarian cancer were imaged with (99m)Tc-etarfolatide before vintafolide treatment. Up to 10 target lesions (TLs) were selected based on Response Evaluation Criteria In Solid Tumors criteria using computed tomography scans. Single-photon emission computed tomography images of TLs were assessed for (99m)Tc-etarfolatide uptake as either FR positive or negative. Patients were categorized by percentage of TLs positive and grouped as FR(100%), FR(10%-90%), and FR(0%). Lesion and patient response were correlated with etarfolatide uptake. RESULTS Forty-nine patients were enrolled; 43 were available for analysis. One hundred thirty-nine lesions were (99m)Tc-etarfolatide evaluable: 110 FR positive and 29 FR negative. Lesion disease control rate (DCR = stable or response) was observed in 56.4% of FR-positive lesions versus 20.7% of FR-negative lesions (P < 0.001). Patient DCR was 57%, 36%, and 33% in FR(100%), FR(10%-90%), and FR(0%) patients, respectively. Median overall survival was 14.6, 9.6, and 3.0 months in FR(100%), FR(10%-90%), and FR(0%) patients, respectively. CONCLUSIONS Overall response to FR-targeted therapy and DCR correlate with FR positivity demonstrated by (99m)Tc-etarfolatide imaging. CLINICAL TRIAL NUMBER NCT00507741.
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Affiliation(s)
| | - R N Joyrich
- Detroit Medical Center, Wayne State University, Detroit
| | | | - N P Shah
- Charlotte Radiology, Carolinas Medical Center, Charlotte
| | - A H Maurer
- Temple University Hospital, Philadelphia
| | - H W Strauss
- Memorial Sloan-Kettering Cancer Center, New York
| | - J M Uszler
- Saint John's Health Center, Santa Monica
| | | | | | - W A Harb
- Horizon Oncology Research, Lafayette, USA
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Cortes JE, Kim DW, Pinilla-Ibarz J, le Coutre P, Paquette R, Chuah C, Nicolini FE, Apperley JF, Khoury HJ, Talpaz M, DiPersio J, DeAngelo DJ, Abruzzese E, Rea D, Baccarani M, Müller MC, Gambacorti-Passerini C, Wong S, Lustgarten S, Rivera VM, Clackson T, Turner CD, Haluska FG, Guilhot F, Deininger MW, Hochhaus A, Hughes T, Goldman JM, Shah NP, Kantarjian H. A phase 2 trial of ponatinib in Philadelphia chromosome-positive leukemias. N Engl J Med 2013; 369:1783-96. [PMID: 24180494 PMCID: PMC3886799 DOI: 10.1056/nejmoa1306494] [Citation(s) in RCA: 764] [Impact Index Per Article: 69.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Ponatinib is a potent oral tyrosine kinase inhibitor of unmutated and mutated BCR-ABL, including BCR-ABL with the tyrosine kinase inhibitor-refractory threonine-to-isoleucine mutation at position 315 (T315I). We conducted a phase 2 trial of ponatinib in patients with chronic myeloid leukemia (CML) or Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph-positive ALL). METHODS We enrolled 449 heavily pretreated patients who had CML or Ph-positive ALL with resistance to or unacceptable side effects from dasatinib or nilotinib or who had the BCR-ABL T315I mutation. Ponatinib was administered at an initial dose of 45 mg once daily. The median follow-up was 15 months. RESULTS Among 267 patients with chronic-phase CML, 56% had a major cytogenetic response (51% of patients with resistance to or unacceptable side effects from dasatinib or nilotinib and 70% of patients with the T315I mutation), 46% had a complete cytogenetic response (40% and 66% in the two subgroups, respectively), and 34% had a major molecular response (27% and 56% in the two subgroups, respectively). Responses were observed regardless of the baseline BCR-ABL kinase domain mutation status and were durable; the estimated rate of a sustained major cytogenetic response of at least 12 months was 91%. No single BCR-ABL mutation conferring resistance to ponatinib was detected. Among 83 patients with accelerated-phase CML, 55% had a major hematologic response and 39% had a major cytogenetic response. Among 62 patients with blast-phase CML, 31% had a major hematologic response and 23% had a major cytogenetic response. Among 32 patients with Ph-positive ALL, 41% had a major hematologic response and 47% had a major cytogenetic response. Common adverse events were thrombocytopenia (in 37% of patients), rash (in 34%), dry skin (in 32%), and abdominal pain (in 22%). Serious arterial thrombotic events were observed in 9% of patients; these events were considered to be treatment-related in 3%. A total of 12% of patients discontinued treatment because of an adverse event. CONCLUSIONS Ponatinib had significant antileukemic activity across categories of disease stage and mutation status. (Funded by Ariad Pharmaceuticals and others; PACE ClinicalTrials.gov number, NCT01207440 .).
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Affiliation(s)
- J E Cortes
- The authors' full names, degrees, and affiliations are listed in the Appendix
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Ayyash MM, Sherkat F, Shah NP. The effect of NaCl substitution with KCl on Akawi cheese: chemical composition, proteolysis, angiotensin-converting enzyme-inhibitory activity, probiotic survival, texture profile, and sensory properties. J Dairy Sci 2013; 95:4747-4759. [PMID: 22916878 DOI: 10.3168/jds.2011-4940] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Accepted: 06/01/2012] [Indexed: 11/19/2022]
Abstract
The effect of partial substitution of NaCl with KCl on Akawi cheese with probiotic bacteria was investigated during 30 d of storage at 4 °C. Chemical composition, the survival of probiotic and lactic acid bacteria, proteolytic activity, and texture profile analysis were analyzed and sensory analysis was carried out to determine the effects of substitution. No significant differences were observed in moisture, protein, fat, and ash contents among the experimental Akawi cheeses at the same storage period. Significant differences were observed in water-soluble nitrogen and phosphotungstic-soluble nitrogen between experimental cheeses at the same of storage period. No significant difference was observed in the growth of Lactobacillus delbrueckii ssp. bulgaricus between experimental cheeses at the same storage period. However, the growth of Streptococcus thermophilus, Lactobacillus casei, and Lactobacillus acidophilus was significantly affected among experimental cheeses. A significant difference was observed in soluble Ca among experimental cheeses at the same storage period. In general, no significant differences existed in hardness and adhesiveness among experimental cheeses at the same storage period. No significant differences existed in sensory attributes, including creaminess, bitterness, saltiness, sour-acid, and vinegar taste among experimental Akawi cheeses at the same storage period.
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Affiliation(s)
- M M Ayyash
- School of Biomedical and Health Sciences, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia
| | - F Sherkat
- School of Applied Sciences, RMIT University, PO Box 2476, Melbourne, Victoria 3001, Australia
| | - N P Shah
- School of Biomedical and Health Sciences, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia; Food and Nutritional Science-School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong.
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18
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Ayyash MM, Sherkat F, Shah NP. The impact of NaCl substitution with KCl on proteinase activities cell-free extract and cell-free supernatant at different pH levels and salt concentrations: Lactobacillus delbrueckii ssp. bulgaricus and Streptococcus thermophilus. J Food Sci 2012; 77:M490-8. [PMID: 22809296 DOI: 10.1111/j.1750-3841.2012.02802.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
UNLABELLED The effect of NaCl substitution with KCl at different pH levels (6.0, 5.5, and 5.0) and salt concentrations on proteinase activities of cell-free and supernatant of Lactobacillus delbrueckii ssp. bulgaricus 11824 (L. bulgaricus) and Streptococcus thermophilus MS (ST) was investigated. MRS broths were separately mixed with 4 salt treatments (NaCl only, 1NaCl:1KCl, 1NaCl:3KCl, and KCl only) at 2 different concentrations (5% and 10%) and incubated at 37 °C for 22 h. The cell pellets were used to prepare proteinase of cell-free extract and the cell-free supernatants were used as source of extracellular proteinases. The proteolytic activities and protein contents of both fractions were determined. The supernatants after incubation of both fractions with 3 milk caseins (α-, β-, κ-casein) were subjected to angiotensin-converting-enzyme inhibitory (ACE-inhibitory) activity and proteolytic activity by ortho-phthalaldehyde (OPA) method. Significant differences were observed in ACE-inhibitory activities and proteolytic (OPA) between salt treatments of cell-free extract and cell-free supernatant of L. bulgaricus and S. thermophilus at same salt concentration and same pH level. There was a significant effect of pH level and salt treatments interaction on ACE-inhibitory activity, OPA activity and azocasein activity. PRACTICAL APPLICATION To reduce sodium concentration in cheese by substituting of NaCl with KCl, it was important to study the effect on starter culture proteinases which play a vital role in ripening and texture profile of cheese.
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Affiliation(s)
- M M Ayyash
- School of Biomedical and Health Sciences, Victoria University, Werribee Campus, Melbourne, Victoria 8001, Australia
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Ding WK, Shah NP. Enhancing the biotransformation of isoflavones in soymilk supplemented with lactose using probiotic bacteria during extended fermentation. J Food Sci 2010; 75:M140-9. [PMID: 20492303 DOI: 10.1111/j.1750-3841.2010.01526.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Soymilk (SM) lacks lactose; hence supplementation of SM with lactose is likely to enhance the growth of probiotic bacteria and biotransformation of isoflavone glycosides to isoflavone aglycones. In this study, 11 strains of probiotic bacteria including Lactobacillus rhamnosus, L. salivarius, L. plantarum, L. acidophilus, L. paracasei, HOWARU L. rhamnosus, L. delbrueckii subsp. bulgaricus, Bifidobacterium lactis type Bi-07, B. longum, HOWARU B. bifidum, and B lactis type Bi-04 were inoculated individually or as mixed cultures into SM and soymilk supplemented with lactose (SML). A total of 2% of lactose was added to 1 L of SM with the aim of improving the growth of probiotic organisms and promoting the biotransformation of isoflavone isomers to bioactive isoflavone aglycomes. Samples of SM were incubated at 37 degrees C and 10 mL aliquots of SM were taken at 0, 24, 48, and 72 h to monitor the growth of probiotic bacteria and changes in isoflavone contents using high-performance liquid chromatography (HPLC). Results indicated that SML fermented with probiotics had higher viable counts by >2.4 log CFU/mL than that in SM at the end of the 72 h fermentation period. Mixed cultures grew at different rates and in general Lactobacilius spp. had >1.02 log CFU/mL more cells than Bifidobacterium spp. at the end of the fermentation period. The total aglycone content in SM at 72 h of fermentation was 0.924 mg/100 mL, whereas that in SML was 1.623 mg/100 mL. Addition of lactose not only improved the growth of probiotic bacteria in SM but also enhanced the biotransformation of isoflavone glucosides to the more bioactive isoflavone aglycones. Mixed cultures did not improve the biotransformation of bioactive isoflavones when compared to single cultures.
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Affiliation(s)
- W K Ding
- School of Biomedical and Health Sciences, Faculty of Health, Engineering and Science, Victoria Univ., Werribee Campus, P.O. Box 14428, Melbourne, Victoria 8001, Australia
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Abstract
This study examined the survival of probiotic bacteria in a model fruit juice system. Three different strains of probiotic bacteria were used in this study: HOWARU Lactobacillus rhamnosus HN001, HOWARU Bifidobacterium lactis HN001, and Lactobacillus paracasei LPC 37. The probiotic bacteria were inoculated into model juice with various vitamins and antioxidants, namely white grape seed extract, green tea extract, vitamin B2, vitamin B3, vitamin B6, vitamin C, and vitamin E. The model juice without any additives was used as a control. Their viability was assessed on a weekly basis using plate count method. The model juice was made with sucrose, sodium citrate, citric acid powder, and distilled water and was pasteurized before use. Our findings showed that probiotic bacteria did not survive well in the harsh environment of the model fruit juice. However, the model juice containing vitamin C, grape extract, and green tea extract showed better survival of probiotic bacteria. The model juice containing grape seed extract, green tea extract, and vitamin C had the same initial population of 8.32 log CFU/mL, and at the end of the 6-wk storage period it had an average viability of 4.29 log CFU/mL, 7.41 log CFU/mL, and 6.44 log CFU/mL, respectively. Juices containing all other ingredients tested had viable counts of <10 CFU/mL at the end of the 6-wk storage period.
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Affiliation(s)
- N P Shah
- School of Biomedical and Health Sciences, Faculty of Health Engineering and Science, Victoria Univ., Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia.
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Ramchandran L, Shah NP. Effect of exopolysaccharides on the proteolytic and angiotensin-I converting enzyme-inhibitory activities and textural and rheological properties of low-fat yogurt during refrigerated storage. J Dairy Sci 2009; 92:895-906. [PMID: 19233782 DOI: 10.3168/jds.2008-1796] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The aim of this study was to examine the influence of using exopolysaccharide (EPS) producing strain of Streptococcus thermophilus on the viability of yogurt starters, their proteolytic and angiotensin-I converting enzyme-inhibitory activities, and on the textural and rheological properties of the low-fat yogurt during storage at 4 degrees C for 28 d. The use of an EPS-producing strain of S. thermophilus did not have influence on pH, lactic acid content, or the angiotensin-I converting enzyme-inhibition activity of low-fat yogurt. However, EPS showed a protective effect on the survival of Lactobacillus delbrueckii ssp. bulgaricus. Presence of EPS reduced the firmness, spontaneous whey separation, yield stress, and hysteresis loop area but not the consistency and flow behavior index of low-fat yogurt.
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Affiliation(s)
- L Ramchandran
- Faculty of Health Engineering and Science, Victoria University, Werribee Campus, Melbourne, Victoria 8001, Australia
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22
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Ong L, Shah NP. Influence of probiotic Lactobacillus acidophilus and L. helveticus on proteolysis, organic acid profiles, and ACE-inhibitory activity of cheddar cheeses ripened at 4, 8, and 12 degrees C. J Food Sci 2008; 73:M111-20. [PMID: 18387113 DOI: 10.1111/j.1750-3841.2008.00689.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The influence of adjunct bacteria on composition of cheeses, organic acid profiles, proteolysis, and ACE-inhibitory activity during ripening at 4, 8, and 12 degrees C for 24 wk was investigated. cheddar cheeses were made with starter lactococci (control), Lactobacillus acidophilus L10, and starter lactococci (L10), and L. acidophilus L10, L. helveticus H100, and starter lactococci (H100). The counts of L. acidophilus in L10 cheeses remained at >10(6) colony forming units (CFU)/g after 24 wk of ripening at 4, 8, and 12 degrees C. Concentrations of lactic, acetic, and propionic acids of the L10 and H100 cheeses were significantly higher than those of the control cheeses after 24 wk of ripening (P < 0.05). Proteolysis of the cheeses was improved as the ripening temperature increased. Water-soluble nitrogen, trichloroacetic acid soluble nitrogen, and phosphotungstic acid soluble nitrogen of L10 and H100 cheeses were significantly higher than those of the control cheeses (P < 0.05). Increase in ripening temperature from 4 degrees C to 8 and 12 degrees C increased the percentage of ACE inhibition. The IC(50) value among cheeses ripened at 4, 8, and 12 degrees C, however, was not significantly different (P > 0.05). Hence, probiotic L. acidophilus L10 can be added into cheddar cheeses to improve proteolysis and ACE-inhibitory activity.
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Affiliation(s)
- L Ong
- School of Molecular Sciences, Victoria University, Werribee Campus, P.O. Box 14428, Melbourne, Victoria 8001, Australia
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23
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Abstract
Lactobacilli are a major part of the microflora of the gut and of many fermented dairy products, and are found in a variety of environments. Lactobacillus casei, Lactobacillus paracasei, Lactobacillus rhamnosus, and Lactobacillus zeae form a closely related taxonomic group within the facultatively heterofermentative lactobacilli. The classification and nomenclature of these bacteria are controversial. In this study, relationships between these species were investigated using type strains and dairy industry isolates examined with DNA-based techniques and conventional carbohydrate use tests. Carbohydrate use patterns gave poor discrimination of some species, but DNA PCR using specific primers targeted to sequences of the 16S rRNA gene discriminated 4 types consistent with the currently recognized species. Pulsed-field agarose gel electrophoresis of chromosomal NotI restriction fragments identified 18 different band patterns from 21 independent Lactobacillus isolates and confirmed the identity of L. casei strains from 2 culture collections (CSCC 5203 and ASCC 290), both representing the type strain of L. casei. Some isolates were reclassified as L. rhamnosus, suggesting that the prevalence of L. rhamnosus as a natural component of the microflora of dairy foods and dairy environments has previously been underestimated. These methods can provide a practical basis for discrimination of the species and identification of individual industrial strains.
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Affiliation(s)
- A R Desai
- School of Molecular Sciences, Victoria University, PO Box 14428, Melbourne City Mail Centre, Victoria 8001, Australia
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Ramchandran L, Shah NP. Proteolytic profiles and angiotensin-I converting enzyme and alpha-glucosidase inhibitory activities of selected lactic acid bacteria. J Food Sci 2008; 73:M75-81. [PMID: 18298740 DOI: 10.1111/j.1750-3841.2007.00643.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
This study was conducted to examine the growth, proteolytic profiles as well as angiotensin-I converting enzyme (ACE) and alpha-glucosidase (alpha-glu) inhibitory potentials of selected strains of lactic acid bacteria (LAB). Two strains each of yogurt bacteria (Streptococcus thermophilus-1275 and 285, and Lactobacillus delbrueckii ssp. bulgaricus-1092 and 1368), and probiotics (L. acidophilus-4461 and 33200, and L. casei-2607 and 15286, and 1 strain of Bifidobacterium longum 5022), were cultivated in reconstituted skim milk (RSM) at 37 degrees C and their proteolytic profiles and ACE as well as alpha-glu inhibitory activities were determined. Among all the strains of lactic acid bacteria studied, yogurt bacteria grew very well, with the exception of L. delbrueckii ssp. bulgaricus 1368 which showed a slower growth during the initial 3 h of incubation. The growth pattern corresponded well with the decrease in pH for the organisms. All the organisms showed an increase in proteolysis with time. The variations in proteolytic capabilities translated into corresponding variations in ACE inhibitory potential of these organisms. Bifidobacterium longum 5022 showed the highest ACE inhibitory potential followed by L. delbrueckii ssp. bulgaricus 1368, L. casei 15286, S. thermophilus 1275, and L. acidophilus 4461. Organisms with high intracellular enzymatic activities grew well. Also, aminopeptidases of strains of L. acidophilus 4461 and S. thermophilus 1275 that could better utilize proline containing substrates showed enhanced ACE inhibitory potential. Lactic acid bacteria possessed the ability to inhibit alpha-glu activity, which endowed them an antidiabetic property as well.
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Affiliation(s)
- L Ramchandran
- Faculty of Health, Engineering and Science, School of Molecular Sciences, Victoria Univ., Werribee Campus, Melbourne, VIC 3030, Australia
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Tang AL, Shah NP, Wilcox G, Walker KZ, Stojanovska L. Fermentation of calcium-fortified soymilk with Lactobacillus: effects on calcium solubility, isoflavone conversion, and production of organic acids. J Food Sci 2008; 72:M431-6. [PMID: 18034738 DOI: 10.1111/j.1750-3841.2007.00520.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The objective of this study was to enhance calcium solubility and bioavailability from calcium-fortified soymilk by fermentation with 7 strains of Lactobacillus, namely, L. acidophilus ATCC 4962, ATCC33200, ATCC 4356, ATCC 4461, L. casei ASCC 290, L. plantarum ASCC 276, and L. fermentum VRI-003. The parameters that were used are viability, pH, calcium solubility, organic acid, and biologically active isoflavone aglycone content. Calcium-fortified soymilk made from soy protein isolate was inoculated with these probiotic strains, incubated for 24 h at 37 degrees C, then stored for 14 d at 4 degrees C. Soluble calcium was measured using atomic absorption spectrophotometry (AA). Organic acids and bioactive isoflavone aglycones, including diadzein, genistein, and glycetein, were measured using HPLC. Viability of the strains in the fermented calcium-fortified soymilk was > 8.5 log(10) CFU/g after 24 h fermentation and this was maintained for 14-d storage at 4 degrees C. After 24 h, there was a significant increase (P < 0.05) in soluble calcium. L. acidophilus ATCC 4962 and L. casei ASCC 290 demonstrated the highest increase with 89.3% and 87.0% soluble calcium after 24 h, respectively. The increase in calcium solubility observed was related to lowered pH associated with production of lactic and acetic acids. Fermentation significantly increased (P < 0.05) the level of conversion of isoflavones into biologically active aglycones, including diadzein, genistein, and glycetein. Our results show that fermenting calcium-fortified soymilk with the selected probiotics can potentially enhance the calcium bioavailability of calcium-fortified soymilk due to increased calcium solubility and bioactive isoflavone aglycone enrichment.
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Affiliation(s)
- A L Tang
- School of Biomedical Sciences, Victoria Univ., St. Albans Campus, P.O Box 14428, Melbourne, VIC 8001, Australia
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26
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Abstract
Eight strains of probiotic bacteria, including Lactobacillus rhamnosus, Bifidobacterium longum, L. salivarius, L. plantarum, L. acidophilus, L. paracasei, B. lactis type Bl-O4, and B. lactis type Bi-07, were studied for their acid, bile, and heat tolerance. Microencapsulation in alginate matrix was used to enhance survival of the bacteria in acid and bile as well as a brief exposure to heat. Free probiotic organisms were used as a control. The acid tolerance of probiotic organisms was tested using HCl in MRS broth over a 2-h incubation period. Bile tolerance was tested using 2 types of bile salts, oxgall and taurocholic acid, over an 8-h incubation period. Heat tolerance was tested by exposing the probiotic organisms to 65 degrees C for up to 1 h. Results indicated microencapsulated probiotic bacteria survived better (P < 0.05) than free probiotic bacteria in MRS containing HCl. When free probiotic bacteria were exposed to oxgall, viability was reduced by 6.51-log CFU/mL, whereas only 3.36-log CFU/mL was lost in microencapsulated strains. At 30 min of heat treatment, microencapsulated probiotic bacteria survived with an average loss of only 4.17-log CFU/mL, compared to 6.74-log CFU/mL loss with free probiotic bacteria. However, after 1 h of heating both free and microencapsulated probiotic strains showed similar losses in viability. Overall microencapsulation improved the survival of probiotic bacteria when exposed to acidic conditions, bile salts, and mild heat treatment.
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Affiliation(s)
- W K Ding
- School of Molecular Sciences, Victoria Univ., Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia
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Donkor ON, Henriksson A, Vasiljevic T, Shah NP. Rheological properties and sensory characteristics of set-type soy yogurt. J Agric Food Chem 2007; 55:9868-9876. [PMID: 17979230 DOI: 10.1021/jf071050r] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The study examined chemical composition and rheological and sensory properties of probiotic soy yogurt during 28 day storage at 4 degrees C. Soymilk supplemented with 2% (w/v) inulin or 1% (w/v) each of raffinose and glucose was used as a base for soy yogurt manufacture. Viability of probiotic organisms and their metabolic activity measured as production of organic acids and aldehyde content responsible for beany flavor, as well as rheological and sensory properties of soy yogurt, were examined. Inulin or raffinose/glucose supplementation in soymilk increased the bacterial population by one log cycle and the amount of lactic acid. Probiotic bacteria metabolized more aldehyde than yogurt culture and substantially reduced the beaniness in soy yogurt as determined by sensory evaluation. The probiotic soy yogurts showed more viscous and pseudoplastic properties than the control soy yogurts, but the sensory evaluation results showed preference for the control soy yogurts which were slightly less viscous. Control soy yogurt provided better mouth feel than probiotic soy yogurts.
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Affiliation(s)
- Osaana N Donkor
- School of Molecular Science, Victoria University, Melbourne, Australia
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Otieno DO, Shah NP. Endogenous β-glucosidase and β-galactosidase activities from selected probiotic micro-organisms and their role in isoflavone biotransformation in soymilk. J Appl Microbiol 2007; 103:910-7. [PMID: 17897193 DOI: 10.1111/j.1365-2672.2007.03438.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [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: 11/30/2022]
Abstract
AIM To compare endogenous beta-glucosidases and beta-galactosidases for hydrolysis of the predominant isoflavone glycosides into isoflavone aglycones in order to improve biological activity of soymilk. METHODS AND RESULTS beta-glucosidase and beta-galactosidase activities of probiotic organisms including Lactobacillus acidophilus ATCC 4461, Lactobacillus casei 2607 and Bifidobacterium animalis ssp. lactis Bb12 in soymilk were evaluated and correlated with the increase in concentration of isoflavone aglycones during fermentation. The concentrations of isoflavone compounds in soymilk were monitored using a Varian model high-performance liquid chromatography (HPLC) with an amperometric electrochemical detector. In all micro-organisms, beta-glucosidase activity was found greater than that of beta-galactosidase. There was an increase in the aglycone concentration with incubation time because of the apparent hydrolytic action on isoflavone glycosides. Aglycone concentration in the soymilk with L. acidophilus 4461, L. casei 2607 and B. animalis ssp. lactis Bb12, increased by 5.37-, 5.52- and 6.10-fold, respectively, after 15 h of fermentation at 37 degrees C. The maximum hydrolytic potential was also observed at 15 h of fermentation for the three micro-organims coinciding with peak activities of the two enzymes. CONCLUSIONS beta-glucosidase activity was more than 15 times higher than beta-galactosidase activity in soymilk for each of the micro-organisms during fermentation. beta-glucosidase played a greater role in isoflavone glycoside hydrolysis. SIGNIFICANCE AND IMPACT OF THE STUDY Screening for beta-glucosidase and beta-galactosidase activities among probiotics in soymilk is important for the improvement of biological activity of soymilk and in the selection of micro-organisms for use in the growing industry of functional foods and beverages.
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Affiliation(s)
- D O Otieno
- School of Molecular Sciences, Victoria University, Werribee Campus, Melbourne, Australia
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Abstract
With 2005 retail sales close to $4.8 million, cultured dairy products are driving the growth of dairy foods consumption. Starter cultures are of great industrial significance in that they play a vital role in the manufacturing, flavor, and texture development of fermented dairy foods. Furthermore, additional interest in starter bacteria has been generated because of the data accumulating on the potential health benefits of these organisms. Today, starter cultures for fermented foods are developed mainly by design rather than by the traditional screening methods and trial and error. Advances in genetics and molecular biology have provided opportunities for genomic studies of these economically significant organisms and engineering of cultures that focuses on rational improvement of the industrially useful strain. Furthermore, much research has been published on the health benefits associated with ingesting cultured dairy foods and probiotics, particularly their role in modulating immune function. The aim of this review is to describe some of the major scientific advances made in starter and non-starter lactic acid bacteria during the past 10 yr, including genomic studies on dairy starter cultures, engineering of culture attributes, advances in phage control, developments in methods to enumerate lactic acid bacteria and probiotics in dairy foods, and the potential role of cultured dairy foods in modulation of immune function.
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Affiliation(s)
- T M Cogan
- Moorepark Food Reseach Centre, Teagasc, Fermoy, Ireland
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Otieno DO, Shah NP. A comparison of changes in the transformation of isoflavones in soymilk using varying concentrations of exogenous and probiotic-derived endogenous ?-glucosidases. J Appl Microbiol 2007; 103:601-12. [PMID: 17714393 DOI: 10.1111/j.1365-2672.2006.03245.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [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: 11/29/2022]
Abstract
AIMS To compare endogenous and exogenous beta-glucosidases for the hydrolysis of the predominant isoflavone glucosides in soymilk in order to improve the biological activity. METHODS AND RESULTS beta-glucosidase activity of probiotic organisms, including Bifidobacterium animalis ssp. lactis Bb12, Lactobacillus acidophilus ATCC 4461 and Lactobacillus casei 2607 in soymilk, was evaluated and was related to the increase in the concentration of isoflavone aglycones during fermentation. The concentrations of isoflavone compounds in soymilk were monitored using a Varian model HPLC with an Amperometric electrochemical detector. The aglycone composition, also known as aglycone equivalent ratio, has been considered to be important for the delivery of health benefits of isoflavones, and was monitored during the fermentation of soymilk. Comparison of the hydrolytic effectiveness of both exogenous and endogenous enzyme during 4-h incubation in soymilk was conducted using the Otieno-Shah (O-S) index. Results showed that exogenous enzyme exhibited faster rate of isoflavone glucoside hydrolysis than that by endogenous enzyme. Highest O-S indices were obtained after 4, 3 and 2 h of incubation with enzyme solution having beta-glucosidase activity of 0.288 U ml(-1), 0.359 U ml(-1) and 0.575 U ml(-1), resulting into aglycone concentration increments of 5.87-, 6.07- and 5.94-fold, respectively. Conversely, aglycone concentration in the soymilk with B. animalis ssp. lactis Bb12, L. casei 2607 and L. acidophilus 4461 increased by 3.43-, 2.72- and 3.03-fold, respectively, after 4 h of fermentation at 37 degrees C. In addition, the O-S index of endogenous enzyme was much lower than that of the exogenous enzyme over the same 4-h incubation period. Optimum aglycone equivalent ratios coincided with highest O-S indices and highest aglycone concentrations in soymilk hydrolysed with exogenous enzyme. The same correlation of O-S indices and highest aglycone concentrations occurred for endogenous enzyme during the 24 h of fermentation. CONCLUSIONS Obtaining highest aglycone concentration and optimum aglycone equivalent ratio could provide a critical beginning point in clinical trials for the realization of unique health benefits of soy isoflavones. SIGNIFICANCE AND IMPACT OF THE STUDY Screening for beta-glucosidase activities of probiotics in soymilk and comparing their hydrolytic potentials with that of exogenous beta-glucosidase could find wide applications in the development of different aglycone-rich functional soy beverages.
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Affiliation(s)
- D O Otieno
- School of Molecular Sciences, Victoria University, Werribee Campus, Melbourne, Victoria, Australia
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Otieno DO, Ashton JF, Shah NP. Isoflavone phytoestrogen degradation in fermented soymilk with selected β-glucosidase producing L. acidophilus strains during storage at different temperatures. Int J Food Microbiol 2007; 115:79-88. [PMID: 17174431 DOI: 10.1016/j.ijfoodmicro.2006.10.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [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: 05/31/2006] [Revised: 08/09/2006] [Accepted: 10/08/2006] [Indexed: 11/21/2022]
Abstract
Soymilk fermented with 3 selected Lactobacillus acidophilus strains were stored at various temperatures (-80 degrees C, 4 degrees C, 25 degrees C and 37 degrees C) for 8 weeks and the concentration of isoflavones determined weekly using RP-HPLC. The decreasing concentration of isoflavones in soymilk during storage due to degradation was found to fit the first order kinetics model. Isoflavone aglycones as well as isoflavone glucosides largely appeared to be stable during storage (P<0.01). Interestingly, the aglycone forms showed much smaller degradation as compared to glucoside forms at all the storage temperatures studied. Of the isoflavone aglycones, daidzein was found to be the most stable followed by genistein, while glycitein was least stable. Isoflavone aglycones such as glycitein, daidzein and genistein showed smaller degradation constants in fermented soymilk at lower storage temperatures (-80 degrees C and 4 degrees C) and higher degradation constants at higher storage temperatures (25 degrees C and 37 degrees C) with each strain. In contrast, glucosides glycitin and daidzin showed higher degradation at lower storage temperatures (-80 degrees C and 4 degrees C) and lower degradation at higher storage temperatures (25 degrees C and 37 degrees C). Storage temperature was therefore found to be very important in regulating the rate of degradation soy isoflavones in fermented soymilk.
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Affiliation(s)
- D O Otieno
- School of Molecular Sciences, Victoria University, Werribee Campus, P.O. Box 14428, Melbourne, Victoria 8001, Australia
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Shah NP, Singhal A, Jain A, Kumar P, Uppal SS, Srivatsava MVP, Prasad HK. Occurrence of overlooked zoonotic tuberculosis: detection of Mycobacterium bovis in human cerebrospinal fluid. J Clin Microbiol 2006; 44:1352-8. [PMID: 16597862 PMCID: PMC1448613 DOI: 10.1128/jcm.44.4.1352-1358.2006] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [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: 11/20/2022] Open
Abstract
The paucibacillary nature of the cerebrospinal fluid (CSF) has been a major obstacle in the diagnosis of human tuberculous meningitis (TBM). This study shows that with molecular techniques direct precise determination to the species level of mycobacterial pathogens can be made. The present report describes the utility of a nested PCR (N-PCR) assay (A. Mishra, A. Singhal, D. S. Chauhan, V. M. Katoch, K. Srivastava, S. S. Thakral, S. S. Bharadwaj, V. Sreenivas, and H. K. Prasad, J. Clin. Microbiol. 43:5670-5678, 2005) in detecting M. tuberculosis and M. bovis in human CSF. In 2.8% (6/212) of the samples, M. tuberculosis was detected, and in 17% (36/212), M. bovis was detected. Mixed infection was observed in 22 samples. Comparative analysis of clinical diagnosis, smear microscopy, and N-PCR in 69 patients (TBM, 25; non-TBM, 44) showed that the sensitivity of N-PCR (61.5%) was greater than that of smear microscopy (38.4%). Determination to the species level is important from the viewpoint of determining the prevalence of these mycobacteria in a community and would influence strategies currently adopted for the prevention of tuberculosis.
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Affiliation(s)
- N P Shah
- All India Institute of Medical Sciences, Department of Biotechnology, Ansari Nagar, New Delhi 110029, India
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Tsangalis D, Wilcox G, Shah NP, McGill AEJ, Stojanovska L. Urinary excretion of equol by postmenopausal women consuming soymilk fermented by probiotic bifidobacteria. Eur J Clin Nutr 2006; 61:438-41. [PMID: 17021598 DOI: 10.1038/sj.ejcn.1602530] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To study the effects of consuming isoflavone aglycone-enriched soymilk fermented by bifidobacteria on urinary excretion of equol with respect to fermentation, daidzein dose, supplementation duration and background diet. DESIGN Double-blind crossover pilot study comprising three 14-day supplementation periods separated by a washout. SETTING Victoria University, Melbourne, Australia. SUBJECTS Sixteen postmenopausal women. INTERVENTION SUBJECTS randomized into two groups consuming either fermented (FS) or non-fermented soymilk (NFS), ingested three daily dosages of daidzein via soymilk and collected pooled urine specimens. Daidzein and equol were quantified using high-performance liquid chromatography. RESULTS After 14-days supplementation six women (38%) excreted equol (>1 micromol equol/day), including four from the FS group, two of whom were classified as non-producers at day 4. Bifidobacteria ingestion, composition of daidzein and its glucosides, and carbohydrate intake appeared to influence equol formation among equol producers. CONCLUSIONS Pilot-study group mean urinary equol excretion results provided insufficient evidence (P>0.05) that FS consumption instigates equol production in women predetermined as non-producers.
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Affiliation(s)
- D Tsangalis
- Food Safety, Authenticity & Quality Unit, School of Molecular Sciences, Victoria University, Werribee, Victoria, Australia
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Abstract
The main aim of this study was to evaluate the effectiveness of 3 synbiotic diets: 1) containing Lactobacillus casei ASCC 292 and fructooligosaccharides (LF diet); 2) containing L. casei ASCC 292 and maltodextrin (LM diet); and 3) containing L. casei ASCC 292, fructooligosaccharide, and maltodextrin (LFM diet) to reduce serum cholesterol in male Wistar rats. The effect of the synbiotic diets on intestinal microflora, concentration of organic acids, and the possibility of translocation of lactobacilli were also investigated. The LFM diet lowered serum total cholesterol and triglyceride levels, whereas the LM diet increased serum high-density lipoprotein cholesterol level. However, synbiotic diets did not contribute to a change in low-density lipoprotein cholesterol level compared with the control diet. There was a decrease in the population of staphylococci, bacteroides, Escherichia coli, and total coliforms in most bowel regions with the LFM diet compared with the control (which did not contain any synbiotic). In general, the LFM diet contributed to a higher concentration of lactic acid that may have contributed to the decrease in the population of pathogenic microorganisms compared with the control. Fructooligosaccharide was the preferred substrate for production of acetic acid. Results from this study showed that the synbiotic diet that contained L. casei ASCC 292, fructooligosaccharide, and maltodextrin beneficially altered cholesterol levels and produced a healthier bowel microbial population without translocation of lactobacilli to other organs.
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Affiliation(s)
- M T Liong
- School of Molecular Sciences, Victoria University, Werribee Campus, PO Box 14428, Melbourne, 8001, Australia
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Liong MT, Shah NP. Production of organic acids from fermentation of mannitol, fructooligosaccharide and inulin by a cholesterol removing Lactobacillus acidophilus strain. J Appl Microbiol 2006; 99:783-93. [PMID: 16162229 DOI: 10.1111/j.1365-2672.2005.02677.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [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: 11/29/2022]
Abstract
AIMS Assessment of individual production of organic acids by Lactobacillus acidophilus ATCC 4962 in the presence of mannitol, fructooligosaccharide (FOS) and inulin. METHODS AND RESULTS The production patterns of individual organic acids by L. acidophilus ATCC 4962 were assessed using the experimental region for optimum cholesterol removal from the interaction between L. acidophilus ATCC 4962 and prebiotics selected in our previous study. The production of acetic and formic acids was growth associated and was greatly influenced by the inoculum size of the organism and the concentration of mannitol. The growth of the organism was repressed with the fermentation end products of FOS and inulin, which subsequently exhibited repressed production of acetic and formic acids as well. The inoculum size, mannitol and FOS linearly affected the formation of butyric acid and the response surface generated showed a correlation between butyric acid and acetic acid. The experimental regions with increased production of lactic acid showed cessation of growth of the organism, indicating inhibition of growth at high concentration of lactic acid. CONCLUSIONS The production of individual organic acids was dependent on growth and the fermentability of prebiotics. Mannitol, FOS and inulin favoured the production of formic, lactic and butyric acids respectively. SIGNIFICANCE AND IMPACT OF THE STUDY The fermentability of prebiotics to produce metabolites has been a controversial issue. Information gathered in this study provides a better understanding on the production of organic acids from fermentation of mannitol, FOS and inulin by L. acidophilus ATCC 4962, and on changes in their production as a response from interaction of factors.
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Affiliation(s)
- M T Liong
- School of Molecular Sciences, Victoria University, Melbourne City Mail Centre, Vic., Australia
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Abstract
PURPOSE Continuous intrathecal medication through a surgically implanted infusion system is an established method for treating intractable spasticity or pain. To determine if imaging can guide surgical or medical management in patients with suspected infusion system malfunction, we reviewed our experience in evaluating the functional status of these systems with indium-111 DTPA scintigraphy. METHODS We retrospectively reviewed 23 indium-111 DTPA studies in 19 patients (7 female, 12 male; ages 20-83 years, average age 47 years). Indications included intractable spasticity or increasing pain. Infusion systems were classified scintigraphically as either functioning or malfunctioning; malfunctions were further classified as either mechanical or catheter-related. Imaging findings were correlated with subsequent clinical management. RESULTS Fifteen of 23 (65%) studies demonstrated functioning infusion systems; these patients were all treated medically. Eight of 23 (35%) studies demonstrated malfunctioning systems; 6 of 8 were subsequently treated surgically and 2 of 8 medically. CONCLUSION Indium-111 DTPA scintigraphy can differentiate between functioning and malfunctioning infusion systems, guiding appropriate medical or surgical management.
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Affiliation(s)
- J F Stinchon
- Department of Radiology, Boston Medical Center and Boston University School of Medicine, Boston, MA 02118, USA.
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Prasad HK, Singhal A, Mishra A, Shah NP, Katoch VM, Thakral SS, Singh DV, Chumber S, Bal S, Aggarwal S, Padma MV, Kumar S, Singh MK, Acharya SK. Bovine tuberculosis in India: potential basis for zoonosis. Tuberculosis (Edinb) 2005; 85:421-8. [PMID: 16253560 DOI: 10.1016/j.tube.2005.08.005] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [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: 11/30/2022]
Abstract
Our laboratory has designed a specific nested-PCR (N-PCR) assay, based on the hupB gene of Mycobacterium tuberculosis (Rv2986c) and Mycobacterium bovis (Mb3010c) as a method to differentiate these closely related species. The present paper deciphers the utility of this assay for identification of pathogenic Mycobacteria in clinical samples. Extra-pulmonary clinical samples obtained from cattle and humans were investigated. Pre-dominance of M. tuberculosis (15.7%) and M. bovis (26.8%) was seen in humans and cattle, respectively. However, more importantly, both mycobacterial pathogens (mixed infection) were identified in a number of samples. In humans 8.7% of the samples and 35.7% in cattle were classified as mixed infection. The detection of mixed infection with the mycobacterial pathogenic duo in humans and bovines denotes the prospect of potential transmission of these pathogens from humans to cattle (zoonosis) and vice versa (reverse zoonosis).
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Affiliation(s)
- H K Prasad
- Department of Biotechnology, All India Institute of Medical Sciences, New Delhi-110029, India.
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Abstract
Lactobacillus casei ASCC 292 was grown in the presence of six prebiotics, namely, sorbitol, mannitol, maltodextrin, high-amylose maize, fructooligosaccharide (FOS), and inulin, in order to determine the combination of probiotic and prebiotics that would remove the highest level of cholesterol. A first-order model showed that the combination of L. casei ASCC 292, FOS, and maltodextrin was the most efficient for the removal of cholesterol, and the optimum experimental region was developed by using the steepest ascent. This led to the middle points of probiotic (1.70% [wt/vol]), FOS (4.80% [wt/vol]), and maltodextrin (6.80% [wt/vol]) for the development of a central composite design for optimization. Perturbation plot, response surface, and coefficient estimates showed that all three factors had significant quadratic effects on cholesterol removal, with FOS showing the most conspicuous quadratic change. A second-order polynomial regression model estimated that the optimum condition of the factors for cholesterol removal by L. casei ASCC 292 is 1.71% (wt/vol) probiotic, 4.95% (wt/vol) FOS, and 6.62% (wt/vol) maltodextrin. Validation experiments showed that the predicted optimum conditions were more efficient than the high and low levels of the factors and the center points. A response surface method proved reliable for developing the model, optimizing factors, and analyzing interaction effects. Analyses of growth, substrate utilization, growth yield, mean doubling time, and short-chain fatty acid (SCFA) production by the use of quadratic models indicated that cholesterol removal was growth associated. The concentration of L. casei ASCC 292 had the most significant quadratic effect on all responses studied, except for substrate utilization and SCFA production, which were significantly (P < 0.05) influenced by the interactions between the probiotic and both prebiotics, indicating that they were closely associated with the uptake of prebiotics.
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Affiliation(s)
- M T Liong
- School of Molecular Sciences, Victoria University, Melbourne, Victoria, Australia
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Abstract
Low-fat Mozzarella cheeses containing 6% fat were made by preacidification of milk, preacidification combined with exopolysaccharide- (EPS-) producing starter, used independently or as a coculture with non-EPS starter, and preacidification combined with whey protein concentrate (WPC) and EPS. The impact of these treatments on moisture retention, changes in texture profile analysis, cheese melt, stretch, and on pizza bake performance were investigated over 45 d of storage at 4 degrees C. Preacidified cheeses without EPS (control) had the lowest moisture content (53.75%). These cheeses were hardest and exhibited greatest springiness and chewiness. The meltability and stretchability of these cheeses increased most during the first 28 d of storage. The moisture content in cheeses increased to 55.08, 54.79, and 55.82% with EPS starter (containing 41.18 mg/g of EPS), coculturing (containing 28.61 mg/g of EPS), and WPC (containing 44.23 mg/g of EPS), respectively. Exopolysaccharide reduced hardness, springiness, and chewiness of low-fat cheeses made with preacidified milk in general and such cheeses exhibited an increase in cohesiveness and meltability. Although stretch distance was similar in all cheeses, those containing EPS were softer than the control. Cocultured cheeses exhibited the greatest meltability. Cheeses containing WPC were softest in general; however, hardness remained unchanged over 45 d. Cheeses made with WPC had the least increase in meltability over time. Incorporation of WPC did not reduce surface scorching or increase shred fusion of cheese shreds during pizza baking; however, there was an improvement in these properties between d 7 and 45. Coating of the cheese shreds with oil was necessary for adequate browning, melt, and flow characteristics in all cheese types.
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Affiliation(s)
- B Zisu
- School of Molecular Sciences, Victoria University, Werribee Campus, PO Box 14428 Melbourne City Mail Center, Victoria 8001, Australia
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Liong MT, Shah NP. Optimization of cholesterol removal, growth and fermentation patterns of Lactobacillus acidophilus ATCC 4962 in the presence of mannitol, fructo-oligosaccharide and inulin: a response surface methodology approach. J Appl Microbiol 2005; 98:1115-26. [PMID: 15836481 DOI: 10.1111/j.1365-2672.2005.02544.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [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: 11/30/2022]
Abstract
AIMS To optimize cholesterol removal by Lactobacillus acidophilus ATCC 4962 in the presence of prebiotics, and study the growth and fermentation patterns of the prebiotics. METHODS AND RESULTS Lactobacillus acidophilus ATCC 4962 was screened in the presence of six prebiotics, namely sorbitol, mannitol, maltodextrin, hi-amylose maize, fructo-oligosaccharide (FOS) and inulin in order to determine the best combination for highest level of cholesterol removal. The first-order model showed that the combination of inoculum size, mannitol, FOS and inulin was best for removal of cholesterol. The second-order polynomial regression model estimated the optimum condition of the factors for cholesterol removal by L. acidophilus ATCC 4962 to be 2.64% w/v inoculum size, 4.13% w/v mannitol, 3.29% w/v FOS and 5.81% w/v inulin. Analyses of growth, mean doubling time and short-chain fatty acid (SCFA) production using quadratic models indicated that cholesterol removal and the production of SCFA were growth associated. CONCLUSIONS Optimum cholesterol removal was obtained from the fermentation of L. acidophilus ATCC 4962 in the presence of mannitol, FOS and inulin. Cholesterol removal and the production of SCFA appeared to be growth associated and highly influenced by the prebiotics. SIGNIFICANCE AND IMPACT OF THE STUDY Response surface methodology proved reliable in developing the model, optimizing factors and analysing interaction effects. The results provide better understanding on the interactions between probiotic and prebiotics for the removal of cholesterol.
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Affiliation(s)
- M T Liong
- School of Molecular Sciences, Victoria University, Werribee Campus, Melbourne, Vic., Australia
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41
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Abstract
Eleven strains of lactobacilli were studied for their acid and bile tolerance. Possible mechanisms of cholesterol removal by strains of lactobacilli were examined. Cholesterol assimilation as determined by the difference in cholesterol content in the medium before and after the incubation period showed that all lactobacilli strains were able to assimilate cholesterol at varying levels ranging from 12.03 to 32.25 microg/mL. Cholesterol removal was associated with growth of cultures. Binding of cholesterol to lactobacilli cells was determined using growing, heat-killed, and resting cells in phosphate buffer. Cholesterol removed by dead and resting cells ranged from 0.79 to 3.82 mg/g of dry weight compared with growing cells, which ranged from 4.53 to 16.03 mg/g of dry weight. Fatty acid methyl esters, as quantified using gas chromatography, showed changes in lipid profiles in cells grown in the presence of cholesterol compared with those grown without cholesterol. Fatty acid profiles, especially of hexadecanoic, octadecanoic, total saturated, and unsaturated acids suggested that cholesterol from the medium was incorporated into the cellular membrane. These findings suggest that strains of lactobacilli could remove cholesterol via various mechanisms and may be promising candidates for use as a dietary adjunct to lower serum cholesterol in vivo.
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Affiliation(s)
- M T Liong
- School of Molecular Sciences, Victoria University, Werribee Campus, PO Box 14428, Victoria 8001, Australia
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42
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Shah RK, Singh RP, Shah NP. Acute pyogenic iliopsoas abscess in children in Nepal. Trop Doct 2004; 34:242-3. [PMID: 15510959 DOI: 10.1177/004947550403400423] [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: 11/16/2022]
Abstract
We describe a prospective study of twenty-four cases of acute pyogenic abscess of the iliopsoas in children treated conservatively and operatively. Eight patients were managed conservatively with antibiotics alone while sixteen others were managed operatively by open drainage. All made a complete recovery.
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Affiliation(s)
- R K Shah
- Orthopaedic & Trauma Clinic, Janakpurdham, Nepal.
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43
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Zisu B, Shah NP. Effects of pH, Temperature, Supplementation with Whey Protein Concentrate, and Adjunct Cultures on the Production of Exopolysaccharides by Streptococcus thermophilus 1275. J Dairy Sci 2003; 86:3405-15. [PMID: 14672169 DOI: 10.3168/jds.s0022-0302(03)73944-7] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.8] [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: 11/19/2022]
Abstract
Effects of pH, temperature, supplementation with whey protein concentrate (WPC), and non-EPS culture on the exopolysaccharide (EPS) production by Streptococcus thermophilus 1275 were studied. The organism was grown in 10% reconstituted skim milk (RSM) in a Biostat B fermenter for 24 h at various pH (4.5, 5.5 and 6.5) and temperatures (30, 37, 40, and 42 degrees C), and supplementation with WPC 392, and non-EPS producing S. thermophilus 1303 and the amount of EPS produced were determined. Bacterial counts were enumerated and the concentrations of lactic acid, lactose, glucose, and galactose were also determined. A maximum of 406 mg/L of EPS was produced in RSM at 37 degrees C after 24 h of fermentation at pH 4.08 when the pH was not controlled. A pH of 5.5 and temperature of 40 degrees C were found to be optimal for EPS production by S. thermophilus 1275, yielding 458 mg/L. The EPS production increased when RSM was supplemented with WPC 392. At optimum pH and at 37 degrees C with WPC supplementation, the level of EPS increased to 1029 mg/L. Co-culturing S. thermophilus 1275 with non-EPS S. thermophilus 1303 increased EPS production at 37 degrees C and pH 5.5 to 832 mg/L. High temperature (42 degrees C) reduced the amount of EPS production, and EPS production ceased at pH 4.5 when maintained constantly at this pH. The level of lactose utilization and lactic acid production depended on growth conditions of the organism. No glucose was detected, while galactose was found to accumulate in the medium.
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Affiliation(s)
- B Zisu
- School of Molecular Sciences, Victoria University, Werribee Campus, PO Box 14428, Melbourne City Mail Center, Victoria 8001, Australia
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Tharmaraj N, Shah NP. Selective enumeration of Lactobacillus delbrueckii ssp. bulgaricus, Streptococcus thermophilus, Lactobacillus acidophilus, bifidobacteria, Lactobacillus casei, Lactobacillus rhamnosus, and propionibacteria. J Dairy Sci 2003; 86:2288-96. [PMID: 12906045 DOI: 10.3168/jds.s0022-0302(03)73821-1] [Citation(s) in RCA: 196] [Impact Index Per Article: 9.3] [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: 11/19/2022]
Abstract
Nineteen bacteriological media were evaluated to assess their suitability to selectively enumerate Lactobacillus delbrueckii ssp. bulgaricus, Streptococcus thermophilus, Lactobacillus casei, Lactobacillus rhamnosus, Lactobacillus acidophilus, bifidobacteria, and propionibacteria. Bacteriological media evaluated included Streptococcus thermophilus agar, pH modified MRS agar, MRS-vancomycine agar, MRS-bile agar, MRS-NaCl agar, MRS-lithium chloride agar, MRS-NNLP (nalidixic acid, neomycin sulfate, lithium chloride and paramomycine sulfate) agar, reinforced clostridial agar, sugar-based (such as maltose, galactose, sorbitol, manitol, esculin) media, sodium lactate agar, arabinose agar, raffinose agar, xylose agar, and L. casei agar. Incubations were carried out under aerobic and anaerobic conditions at 27, 30, 37, 43, and 45 degrees C for 24, 72 h, and 7 to 9 d. S. thermophilus agar and aerobic incubation at 37 degrees C for 24 h were suitable for S. thermophilus. L. delbrueckii ssp. bulgaricus could be enumerated using MRS agar (pH 4.58 or pH 5.20) and under anaerobic incubation at 45 degrees C for 72 h. MRS-vancomycine agar and anaerobic incubation at 43 degrees C for 72 h were suitable to enumerate L. rhamnosus. MRS-vancomycine agar and anaerobic incubation at 37 degrees C for 72 h were selective for L. casei. To estimate the counts of L. casei by subtraction method, counts of L. rhamnosus on MRS-vancomycine agar at 43 degrees C for 72 h under anaerobic incubation could be subtracted from total counts of L. casei and L. rhamnosus enumerated on MRS-vancomycine agar at 37 degrees C for 72 h under anaerobic incubation. L. acidophilus could be enumerated using MRS-agar at 43 degrees C for 72 h or Basal agar-maltose agar at 43 degrees C for 72 h or BA-sorbitol agar at 37 degrees C for 72 h, under anaerobic incubation. Bifidobacteria could be enumerated on MRS-NNLP agar under anaerobic incubation at 37 degrees C for 72 h. Propionibacteria could be enumerated on sodium lactate agar under anaerobic incubation at 30 degrees C for 7 to 9 d. A subtraction method was most suitable for counting propionibacteria in the presence of other lactic acid bacteria from a product. For this method, counts of lactic bacteria at d 3 on sodium lactate agar under anaerobic incubation at 30 degrees C were subtracted from counts at d 7 of lactic bacteria and propionibacteria.
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Affiliation(s)
- N Tharmaraj
- School of Molecular Sciences, Victoria University, Werribee Campus, PO Box 14428 Melbourne City Mail Centre, Victoria 8001 Australia
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45
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Lee VW, Shah NP. In search of the ideal radiotracer for soft-tissue amyloid scanning. Amyloid 2001; 8:220-1. [PMID: 11676299 DOI: 10.3109/13506120109007365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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46
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Shah NP, Sawyers CL. Recent success with the tyrosine kinase inhibitor STI-571--lessons for targeted therapy of cancer. Curr Opin Investig Drugs 2001; 2:422-3. [PMID: 11575716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
MESH Headings
- Antineoplastic Agents/therapeutic use
- Benzamides
- Clinical Trials, Phase I as Topic
- Enzyme Inhibitors/therapeutic use
- Forecasting
- Gene Targeting
- Genes, abl/drug effects
- Humans
- Imatinib Mesylate
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Piperazines/therapeutic use
- Protein-Tyrosine Kinases/antagonists & inhibitors
- Protein-Tyrosine Kinases/genetics
- Pyrimidines/therapeutic use
- Remission Induction
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Affiliation(s)
- N P Shah
- Department of Medicine, University of California, Los Angeles 90095-1678, USA
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Abstract
Milk contains various components with physiological functionality. Peptides derived from caseins and whey proteins including opioid peptides, antihypertensive peptides, casein phosphopeptides, alpha- and beta-lactorphins and albutensin have been shown to possess various bioactive properties. This review considers an overview of the bioactive components in milk proteins and whey and their physiological function.
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Affiliation(s)
- N P Shah
- School of Life Science and Technology, Victoria University of Technology, Melbourne, Australia.
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48
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Abstract
A number of health benefits have been claimed for probiotic bacteria such as Lactobacillus acidophilus, Bifidobacterium spp., and Lactobacillus casei. Because of the potential health benefits, these organisms are increasingly incorporated into dairy foods. However, studies have shown low viability of probiotics in market preparations. In order to assess viability of probiotic bacteria, it is important to have a working method for selective enumeration of these probiotic bacteria. Viability of probiotic bacteria is important in order to provide health benefits. Viability of probiotic bacteria can be improved by appropriate selection of acid and bile resistant strains, use of oxygen impermeable containers, two-step fermentation, micro-encapsulation, stress adaptation, incorporation of micronutrients such as peptides and amino acids and by sonication of yogurt bacteria. This review will cover selective enumeration and survival of probiotic bacteria in dairy foods.
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Affiliation(s)
- N P Shah
- School of Life Sciences and Technology, Victoria University of Technology, Australia.
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49
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Abstract
The present investigation studied the effects of cysteine, whey powder, whey protein concentrate, acid casein hydrolysates, or tryptone on the viability of Streptococcus thermophilus, Lactobacillus acidophilus, and bifidobacteria. Changes in pH, titratable acidity, redox potential, and viability of bacteria were monitored during 24 h of fermentation and refrigerated storage (4 degrees C) of yogurt for 35 d. The incubation time that was needed to reach pH 4.5 was considerably affected by the added ingredients. Also, the drop in pH or the increase in acidity and redox potential was dependent on the added ingredients. The addition of cysteine, whey protein concentrate, acid casein hydrolysates, or tryptone improved the viability of bifidobacteria to a variable extent, but whey powder failed to improve their viability. The morphology of S. thermophilus, as shown by electron microscopy, was affected by cysteine at 500 mg/L, possibly as a result of reduced redox potential. Sodium dodecyl sulfate-PAGE and amino acid analyses suggested that the nitrogen source in the form of peptides and amino acids improved the viability of bifidobacteria in yogurt made with a commercial ABT (Lactobacillus acidophilus, bifidobacteria, and Streptococcus thermophilus) starter culture, which showed a dramatic decline in the counts of this organism in previous studies.
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Affiliation(s)
- R I Dave
- Center for Bioprocessing and Food Technology, Victoria University of Technology, Australia
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50
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Abstract
Supernumerary teeth (hyperdontia) are relatively common in the general population and occur more frequently in patients with a family history of such teeth. Supernumerary teeth have been reported in many genetic syndromes, but multiple supernumerary teeth occurring as an isolated non-syndromic trait are rare. This article describes a rare non-syndromic variety of multiple impacted supernumerary teeth in two brothers.
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Affiliation(s)
- R S Desai
- Department of Oral Pathology, Mahatma Gandhi Vidyamandir's Dental College and Hospital, Nashik, India
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