1
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Wattier RL, Bucayu RFT, Boge CLK, Ross RK, Yildirim I, Zaoutis TE, Palazzi DL, Vora SB, Castagnola E, Avilés-Robles M, Danziger-Isakov L, Tribble AC, Sharma TS, Arrieta AC, Maron G, Berman DM, Yin DE, Sung L, Green M, Roilides E, Belani K, Romero J, Soler-Palacin P, López-Medina E, Nolt D, Bin Hussain IZ, Muller WJ, Hauger SB, Halasa N, Dulek D, Pong A, Gonzalez BE, Abzug MJ, Carlesse F, Huppler AR, Rajan S, Aftandilian C, Ardura MI, Chakrabarti A, Hanisch B, Salvatore CM, Klingspor L, Knackstedt ED, Lutsar I, Santolaya ME, Shuster S, Johnson SK, Steinbach WJ, Fisher BT. Adjunctive Diagnostic Studies Completed Following Detection of Candidemia in Children: Secondary Analysis of Observed Practice From a Multicenter Cohort Study Conducted by the Pediatric Fungal Network. J Pediatric Infect Dis Soc 2023; 12:487-495. [PMID: 37589394 PMCID: PMC10533205 DOI: 10.1093/jpids/piad057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 08/11/2023] [Indexed: 08/18/2023]
Abstract
BACKGROUND Adjunctive diagnostic studies (aDS) are recommended to identify occult dissemination in patients with candidemia. Patterns of evaluation with aDS across pediatric settings are unknown. METHODS Candidemia episodes were included in a secondary analysis of a multicenter comparative effectiveness study that prospectively enrolled participants age 120 days to 17 years with invasive candidiasis (predominantly candidemia) from 2014 to 2017. Ophthalmologic examination (OE), abdominal imaging (AbdImg), echocardiogram, neuroimaging, and lumbar puncture (LP) were performed per clinician discretion. Adjunctive diagnostic studies performance and positive results were determined per episode, within 30 days from candidemia onset. Associations of aDS performance with episode characteristics were evaluated via mixed-effects logistic regression. RESULTS In 662 pediatric candidemia episodes, 490 (74%) underwent AbdImg, 450 (68%) OE, 426 (64%) echocardiogram, 160 (24%) neuroimaging, and 76 (11%) LP; performance of each aDS per episode varied across sites up to 16-fold. Longer durations of candidemia were associated with undergoing OE, AbdImg, and echocardiogram. Immunocompromised status (58% of episodes) was associated with undergoing AbdImg (adjusted odds ratio [aOR] 2.38; 95% confidence intervals [95% CI] 1.51-3.74). Intensive care at candidemia onset (30% of episodes) was associated with undergoing echocardiogram (aOR 2.42; 95% CI 1.51-3.88). Among evaluated episodes, positive OE was reported in 15 (3%), AbdImg in 30 (6%), echocardiogram in 14 (3%), neuroimaging in 9 (6%), and LP in 3 (4%). CONCLUSIONS Our findings show heterogeneity in practice, with some clinicians performing aDS selectively, potentially influenced by clinical factors. The low frequency of positive results suggests that targeted application of aDS is warranted.
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Affiliation(s)
- Rachel L Wattier
- Department of Pediatrics, University of California San Francisco, San Francisco, California, USA
| | - Robert F T Bucayu
- Department of Pediatrics, University of California San Francisco, San Francisco, California, USA
| | - Craig L K Boge
- Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Rachael K Ross
- Department of Epidemiology, University of North Carolina Chapel Hill, Chapel Hill, North Carolina, USA
| | - Inci Yildirim
- Department of Pediatrics, Yale University School of Medicine, Connecticut, USA
- Yale Institute for Global Health, Yale University, New Haven, Connecticut, USA
- Yale Center for Infection and Immunity, New Haven, Connecticut, USA
- Department of Epidemiology, Yale School of Public Health, New Haven, Connecticut, USA
| | - Theoklis E Zaoutis
- Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Debra L Palazzi
- Department of Pediatrics, Baylor College of Medicine and Texas Children’s Hospital, Houston, Texas, USA
| | - Surabhi B Vora
- Department of Pediatrics, University of Washington, Division of Infectious Diseases, Seattle Children’s Hospital, Seattle, Washington, USA
| | - Elio Castagnola
- Department of Pediatrics, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Martha Avilés-Robles
- Department of Infectious Diseases, Hospital Infantil de México Federico Gómez, Mexico City, Mexico
| | - Lara Danziger-Isakov
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, USA
| | - Alison C Tribble
- Division of Infectious Diseases, Department of Pediatrics, University of Michigan and C.S. Mott Children’s Hospital, Ann Arbor, Michigan, USA
| | - Tanvi S Sharma
- Division of Infectious Diseases, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Antonio C Arrieta
- Department of Infectious Diseases, Children’s Hospital of Orange County, Orange, California, USA
- Department of Pediatrics, University of California Irvine, Irvine, California, USA
| | - Gabriela Maron
- Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - David M Berman
- Division of Pediatric Infectious Diseases, Johns Hopkins All Children’s Hospital, St. Petersburg, Florida, USA
| | - Dwight E Yin
- Department of Pediatrics, Children’s Mercy and University of Missouri-Kansas City School of Medicine, Kansas City, Missouri, USA
| | - Lillian Sung
- Division of Haematology/Oncology, The Hospital for Sick Children, Toronto, Canada
| | - Michael Green
- Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania, USA
| | - Emmanuel Roilides
- Infectious Diseases Unit, 3rd Department of Pediatrics, Aristotle University and Hippokration Hospital, Thessaloniki, Greece
| | - Kiran Belani
- Pediatric Infectious Diseases, Children’s Minnesota, Minneapolis, Minnesota, USA
| | - José Romero
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Pere Soler-Palacin
- Pediatric Infectious Diseases and Immunodeficiencies Unit, Hospital Universitari Vall d’Hebron, Barcelona, Catalonia, Spain
| | - Eduardo López-Medina
- Centro de Estudios en Infectología Pediátrica, Clínica Imbanaco Grupo Quirónsalud and Universidad del Valle, Cali, Colombia
| | - Dawn Nolt
- Department of Pediatrics, Oregon Health and Science University and Doernbecher Children’s Hospital, Portland, Oregon, USA
| | - Ibrahim Zaid Bin Hussain
- Pediatric Infectious Diseases, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - William J Muller
- Department of Pediatrics, Ann & Robert H. Lurie Children’s Hospital of Chicago and Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Sarmistha B Hauger
- Department of Pediatrics, University of Texas at Austin and Dell Children’s Medical Center, Austin, Texas, USA
| | - Natasha Halasa
- Department of Pediatrics, Vanderbilt University Medical Center and Monroe Carell Jr. Children’s Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Daniel Dulek
- Department of Pediatrics, Vanderbilt University Medical Center and Monroe Carell Jr. Children’s Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Alice Pong
- Department of Pediatrics, University of California San Diego and Rady Children’s Hospital San Diego, San Diego, California, USA
| | - Blanca E Gonzalez
- Center for Pediatric Infectious Diseases, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Mark J Abzug
- Department of Pediatrics, University of Colorado School of Medicine and Children’s Hospital Colorado, Aurora, Colorado, USA
| | - Fabianne Carlesse
- Instituto de Oncologia Pediatrica–IOP/GRAACC-UNIFESP, São Paulo, Brazil
| | - Anna R Huppler
- Department of Pediatrics, Medical College of Wisconsin and Children’s Wisconsin, Milwaukee, Wisconsin, USA
| | - Sujatha Rajan
- Division of Pediatric Infectious Diseases, Cohen Children’s Medical Center, New Hyde Park, New York, USA
| | - Catherine Aftandilian
- Department of Pediatrics, Stanford University School of Medicine, Palo Alto, California, USA
| | - Monica I Ardura
- Division of Infectious Diseases and Host Defense Program, Department of Pediatrics, Nationwide Children’s Hospital and The Ohio State University, Columbus, Ohio, USA
| | | | - Benjamin Hanisch
- Pediatric Infectious Diseases, Children’s National Health System, Washington, District of Columbia, USA
| | - Christine M Salvatore
- Division of Pediatric Infectious Diseases, Weill Cornell Medicine and Komansky Children’s Hospital, New York, New York, USA
| | - Lena Klingspor
- Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden
| | | | - Irja Lutsar
- Department of Microbiology, University of Tartu, Tartu, Estonia
| | - Maria E Santolaya
- Hospital Dr. Luis Calvo Mackenna, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Sydney Shuster
- Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Sarah K Johnson
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - William J Steinbach
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Brian T Fisher
- Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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Passarelli P, Ramchandar N, Naheedy J, Kling K, Choi L, Pong A. AN 8-YEAR-OLD CALIFORNIA GIRL WITH ASYMPTOMATIC HEPATIC CYSTS. Pediatr Infect Dis J 2022; 41:e295-e296. [PMID: 35421052 DOI: 10.1097/inf.0000000000003539] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Echinococcus infections are rare in the United States but may present a growing public health threat. We present the case of an 8-year-old female patient from Southern California who was diagnosed with hepatic echinococcosis after the incidental discovery of large hepatic cysts.
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Affiliation(s)
| | | | - John Naheedy
- Department of Radiology, Department of Pediatrics
| | - Karen Kling
- Department of Surgery, Department of Pediatrics
| | - Lillian Choi
- Department of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of California San Diego, Rady Children's Hospital San Diego, California, USA
| | - Alice Pong
- Department of Infectious Diseases, Department of Pediatrics
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3
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Drobish I, Ramchandar N, Raabe V, Pong A, Bradley J, Cannavino C. Pediatric Osteoarticular Infections Caused by Mycobacteria Tuberculosis Complex: A 26-Year Review of Cases in San Diego, CA. Pediatr Infect Dis J 2022; 41:361-367. [PMID: 34974478 DOI: 10.1097/inf.0000000000003447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 11/26/2022]
Abstract
BACKGROUND Osteoarticular infections (OAIs) account for 10%-20% of extrapulmonary Mycobacteria tuberculosis (MTB) complex infections in children and 1%-2% of all pediatric tuberculosis infections. Treatment regimens and durations typically mirror recommendations for other types of extrapulmonary MTB, but there are significant variations in practice, with some experts suggesting a treatment course of 12 months or longer. METHODS We conducted a retrospective review of children diagnosed with MTB complex OAI and cared for between December 31, 1992, and December 31, 2018, at a tertiary care pediatric hospital near the United States-Mexico border. RESULTS We identified 21 children with MTB complex OAI during the study period. Concurrent pulmonary disease (9.5%), meningitis (9.5%), and intra-abdominal involvement (14.3%) were all observed. MTB complex was identified by culture from operative samples in 15/21 children (71.4%); 8/15 (53.3%) cultures were positive for Mycobacterium bovis. Open bone biopsy was the most common procedure for procurement of a tissue sample and had the highest culture yield. The median duration of antimicrobial therapy was 52 weeks (interquartile range, 46-58). Successful completion of therapy was documented in 15 children (71.4%). Nine children (42.9%) experienced long-term sequelae related to their infection. CONCLUSION Among the 21 children with MTB complex OAI assessed, 8 of 15 (53.3%) children with a positive tissue culture had M. bovis, representing a higher percentage than in previous reports and potentially reflecting its presence in unpasteurized dairy products in the California-Baja region. Bone biopsy produced the highest culture yield in this study. Given the rarity of this disease, multicenter collaborative studies are needed to improve our understanding of the presentation and management of pediatric MTB complex OAI.
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Affiliation(s)
- Ian Drobish
- From the University of California, San Diego, California
| | | | - Vanessa Raabe
- New York University Grossman School of Medicine, New York
| | - Alice Pong
- From the University of California, San Diego, California
- Rady Children's Hospital San Diego, San Diego, California
| | - John Bradley
- From the University of California, San Diego, California
- Rady Children's Hospital San Diego, San Diego, California
| | - Christopher Cannavino
- From the University of California, San Diego, California
- Rady Children's Hospital San Diego, San Diego, California
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4
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Fisher BT, Boge CLK, Xiao R, Shuster S, Chin-Quee D, Allen J, Shaheen S, Hayden R, Suganda S, Zaoutis TE, Chang YC, Yin DE, Huppler AR, Danziger-Isakov L, Muller WJ, Roilides E, Romero J, Sue PK, Berman D, Wattier RL, Halasa N, Pong A, Maron G, Soler-Palacin P, Hutto SC, Gonzalez BE, Salvatore CM, Rajan S, Green M, Doby Knackstedt E, Hauger SB, Steinbach WJ. Multicenter Prospective Study of Biomarkers for Diagnosis of Invasive Candidiasis in Children and Adolescents. Clin Infect Dis 2022; 75:248-259. [PMID: 35134165 PMCID: PMC9890499 DOI: 10.1093/cid/ciab928] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Diagnosis of invasive candidiasis (IC) relies on insensitive cultures; the relative utility of fungal biomarkers in children is unclear. METHODS This multinational observational cohort study enrolled patients aged >120 days and <18 years with concern for IC from 1 January 2015 to 26 September 2019 at 25 centers. Blood collected at onset of symptoms was tested using T2Candida, Fungitell (1→3)-β-D-glucan, Platelia Candida Antigen (Ag) Plus, and Platelia Candida Antibody (Ab) Plus assays. Operating characteristics were determined for each biomarker, and assays meeting a defined threshold considered in combination. Sterile site cultures were the reference standard. RESULTS Five hundred participants were enrolled at 22 centers in 3 countries, and IC was diagnosed in 13 (2.6%). Thirteen additional blood specimens were collected and successfully spiked with Candida species, to achieve a 5.0% event rate. Valid T2Candida, Fungitell, Platelia Candida Ag Plus, and Platelia Candida Ab Plus assay results were available for 438, 467, 473, and 473 specimens, respectively. Operating characteristics for T2Candida were most optimal for detecting IC due to any Candida species, with results as follows: sensitivity, 80.0% (95% confidence interval, 59.3%-93.2%), specificity 97.1% (95.0%-98.5%), positive predictive value, 62.5% (43.7%-78.9%), and negative predictive value, 98.8% (97.2%-99.6%). Only T2Candida and Platelia Candida Ag Plus assays met the threshold for combination testing. Positive result for either yielded the following results: sensitivity, 86.4% (95% confidence interval, 65.1%- 97.1%); specificity, 94.7% (92.0%-96.7%); positive predictive value, 47.5% (31.5%-63.9%); and negative predictive value, 99.2% (97.7%-99.8%). CONCLUSIONS T2Candida alone or in combination with Platelia Candida Ag Plus may be beneficial for rapid detection of Candida species in children with concern for IC. CLINICAL TRIALS REGISTRATION NCT02220790.
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Affiliation(s)
- Brian T Fisher
- Correspondence: B. T. Fisher, Division of Infectious Diseases, Children’s Hospital of Philadelphia, Roberts Pediatric Research Center, 2716 South St, Room 10-362, Philadelphia, PA 19146 ()
| | - Craig L K Boge
- Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Rui Xiao
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Sydney Shuster
- Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | | | - John Allen
- Duke University, Durham, North Carolina, USA
| | | | - Randall Hayden
- Department of Pathology, St Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Sri Suganda
- Department of Pathology, St Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | - Theoklis E Zaoutis
- Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA,Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | - Dwight E Yin
- Children’s Mercy and University of Missouri–Kansas City School of Medicine, Kansas City, Missouri, USA
| | - Anna R Huppler
- Medical College of Wisconsin and Children’s Wisconsin, Milwaukee, Wisconsin, USA
| | | | - William J Muller
- Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Emmanuel Roilides
- Infectious Disease Unit, 3rd Department of Pediatrics, School of Medicine, Aristotle University and Hippokration Hospital, Thessaloniki, Greece
| | - José Romero
- Arkansas Children’s Hospital Research Institute, Little Rock, Arkansas, USA
| | - Paul K Sue
- University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - David Berman
- John Hopkins All Children’s Hospital, St Petersburg, Florida, USA
| | - Rachel L Wattier
- University of California–San Francisco, San Francisco, California, USA
| | - Natasha Halasa
- Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Alice Pong
- University of California San Diego, San Diego, California, USA
| | - Gabriela Maron
- St Jude Children’s Research Hospital, Memphis, Tennessee, USA
| | | | - Susan C Hutto
- University of Alabama, Birmingham, Birmingham, Alabama, USA
| | | | | | - Sujatha Rajan
- Cohen Children’s Medical Center of New York, New Hyde Park, New York, USA
| | - Michael Green
- UPMC Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
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5
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Drobish I, Ramchandar N, Raabe V, Pong A, Bradley JS, Cannavino CR. 1150. Pediatric Osteoarticular Infections Caused by Mycobacteria Tuberculosis Complex: A Twenty-Six Year Review of Cases in San Diego, California. Open Forum Infect Dis 2021. [PMCID: PMC8644972 DOI: 10.1093/ofid/ofab466.1343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background Osteoarticular infections (OAI) account for 10-20% of extrapulmonary Mycobacteria tuberculosis (MTB) complex infections in children. Given the rarity of MTB OAI, the epidemiology, disease manifestations, and treatment are poorly characterized. We describe 21 children treated for MTB complex OAI over a 26-year period at a tertiary pediatric center in southern California. Methods We conducted a retrospective review of children diagnosed with MTB complex OAI and cared for between 31 Dec 1992 to 31 Dec 2018 at a single tertiary care pediatric hospital with close proximity to the United States-Mexico border. Results We identified 21 children with MTB complex OAI during the study period (Table 1). Concurrent pulmonary disease (4.8%), meningitis (9.5%), and intra-abdominal involvement (14.3%) were all observed. MTB complex was identified by culture from operative samples in 15/21 children (71.4%); 8/15 (51.3%) cultures were positive for Mycobacterium bovis. Of the eight cases of vertebral OAI (the most common site), one was culture-positive for M. bovis. Open bone biopsy was the most common procedure for procurement of a tissue sample and had the highest culture yield (Table 2). The median duration of antimicrobial therapy was 52 weeks (IQR 52-58). Successful completion of therapy was documented in 15 children (71.4%). Seven children (33.3%) experienced long term sequelae related to their infection. Table 1. Twenty-one children with Mycobacteria tuberculosis complex osteoarticular infections. ![]()
Table 2. Surgical sample type and percent positivity. ![]()
Conclusion Among the 21 children with MTB complex OAI assessed, 8 of 15 (53.3%) children with a positive tissue culture had M. bovis (intrinsically resistant to pyrazinamide), representing a higher percentage than in previous reports and potentially reflecting its presence in unpasteurized dairy products in the California-Baja region. Local epidemiological trends in endemic MTB complex species should be considered when evaluating and managing MTB complex OAI. Bone biopsy produced the highest culture yield in this study. Given the rarity of this disease, multicenter collaborative studies are needed to improve our understanding of the presentation and management of pediatric MTB complex OAI. Disclosures Vanessa Raabe, MD, MSc, Pfizer (Scientific Research Study Investigator, Other Financial or Material Support, Editorial support)Sanofi (Scientific Research Study Investigator)
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Affiliation(s)
- Ian Drobish
- University of California, San Diego, San Diego, California
| | | | | | - Alice Pong
- University of California San Diego/Rady Children’s Hospital, San Diego, California
| | - John S Bradley
- University of California San Diego, Carlsbad, California
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6
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Strutner J, Ramchandar N, Dubey S, Gamboa M, Vanderpool MK, Mueller T, Wang W, Cannavino C, Tovar Padua L, Malicki D, Pong A. Comparison of Reverse-Transcription Polymerase Chain Reaction Cycle Threshold Values From Respiratory Specimens in Symptomatic and Asymptomatic Children With Severe Acute Respiratory Syndrome Coronavirus 2 Infection. Clin Infect Dis 2021; 73:1790-1794. [PMID: 34060629 PMCID: PMC8243523 DOI: 10.1093/cid/ciab120] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Understanding viral kinetics of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is important to assess risk of transmission, manage treatment, and determine the need for isolation and protective equipment. The impact of viral load in asymptomatic infected children is important to understand transmission potential. We sought to determine whether children deemed to be asymptomatic had a difference in the polymerase chain reaction (PCR) cycle threshold (Ct) value of respiratory samples from symptomatic children with SARS-CoV-2 infection. METHODS This was a retrospective cross-sectional study to compare PCR Ct values of children who tested positive for SARS-CoV-2 by respiratory samples collected over a 4-month period at a large tertiary care children's hospital. RESULTS We analyzed 728 children who tested positive for SARS-CoV-2 by reverse-transcription PCR (RT-PCR) from a respiratory sample over a 4-month period and for whom data were available in the electronic medical record. Overall, 71.2% of infected children were symptomatic. The mean Ct value for symptomatic patients (Ct mean, 19.9 [standard deviation, 6.3]) was significantly lower than for asymptomatic patients (Ct mean, 23.5 [standard deviation, 6.9]) (P < .001; 95% confidence interval, 2.6-4.6). The mean PCR Ct value was lowest in children <5 years of age. CONCLUSIONS In this retrospective review of children who tested positive by RT-PCR for SARS-CoV-2, the mean Ct was significantly lower in symptomatic children and was lowest in children <5 years of age, indicating that symptomatic children and younger children infected with SARS-CoV-2 may have a higher viral load in the nasopharynx compared to asymptomatic children. Further studies are needed to assess the transmission potential from asymptomatic children.
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Affiliation(s)
- John Strutner
- Department of Pediatrics, University of California, San
Diego, San Diego, California, USA
| | - Nanda Ramchandar
- Division of Infectious Diseases, Department of Pediatrics,
University of California, San Diego, San Diego,
California, USA
| | - Shruti Dubey
- School of Medicine, University of California, San
Diego, San Diego, California, USA
| | - Mary Gamboa
- School of Medicine, University of California, San
Diego, San Diego, California, USA
| | | | | | - Wei Wang
- Rady Children’s Hospital, San
Diego, California, USA
| | - Christopher Cannavino
- Division of Infectious Diseases, Department of Pediatrics,
University of California, San Diego, San Diego,
California, USA
- Rady Children’s Hospital, San
Diego, California, USA
| | - Leidy Tovar Padua
- Division of Infectious Diseases, Department of Pediatrics,
University of California, San Diego, San Diego,
California, USA
- Rady Children’s Hospital, San
Diego, California, USA
| | - Denise Malicki
- Rady Children’s Hospital, San
Diego, California, USA
- Department of Pathology, University of California San
Diego, San Diego, California, USA
| | - Alice Pong
- Division of Infectious Diseases, Department of Pediatrics,
University of California, San Diego, San Diego,
California, USA
- Rady Children’s Hospital, San
Diego, California, USA
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7
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Cherney DZI, Segar M, Pandey A, Cannon CP, Cosentino F, Dagogo-Jack S, Pratley RE, Frederich R, Cater NB, Maldonado M, Liu J, Liu CC, Pong A, McGuire DK. Mediators of the effect of ertugliflozin on a composite kidney outcome in patients with type 2 diabetes and atherosclerotic cardiovascular disease: analyses from VERTIS CV. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Sodium–glucose cotransporter 2 (SGLT2) inhibitors have been shown to slow the decline of kidney function in outcome trials, but the biological mediator(s) underlying the therapeutic benefit are not well established.
Purpose
We performed a post-hoc analysis exploring potential mediators of the effects of the SGLT2 inhibitor ertugliflozin on the VERTIS CV exploratory kidney composite outcome (sustained 40% decrease from baseline in estimated glomerular filtration rate [eGFR], chronic kidney replacement therapy or kidney death).
Methods
In VERTIS CV, 8246 participants with type 2 diabetes mellitus and established atherosclerotic cardiovascular disease were randomised to placebo, ertugliflozin 5 mg or 15 mg (pooled for analyses, as prospectively planned), and were followed for a mean of 3.5 years. The hazard ratio (HR; 95% confidence interval) for the pre-specified exploratory kidney composite outcome was 0.66 (0.50, 0.88). Cox regression models were used to evaluate covariates that were significantly differentially changed from baseline with ertugliflozin treatment as candidate mediators, with a mediator identified as a covariate when added to an unadjusted model of randomised treatment assignment a) yielded a larger hazard ratio; and b) the mediator retained P<0.05 in the model (eGFR was excluded as a covariate). The percentage of mediation was determined by the proportional increase in the HR between the unadjusted and adjusted models for each post-randomisation period: early (first change from baseline measurement) and average (weighted average of change from baseline from all post-baseline measurements). Each potential mediator was tested individually, so across analyses, mediation % sums to >100%.
Results
Of 22 covariates significantly changed by ertugliflozin, nine were identified as potential mediators (Table). The covariates with a high percentage of mediation were those related to changes in blood erythrocytes (haemoglobin, haematocrit and red blood cell mass), with average changes in haemoglobin having the highest percentage of mediation (61.8%). Serum uric acid was associated with a mediation of 29.4% and 50.0% for the early and average post-randomisation effect periods, respectively. Early changes in glycated haemoglobin had a large mediation (50%), but the average change during the trial was not significant. Average change in serum albumin had a large mediation (29.4%). Average changes in body weight and systolic blood pressure had percentages of mediation of 41.2% and 14.7%, respectively.
Conclusion
Multiple factors may be involved in the reduction of the kidney composite outcome observed with ertugliflozin. In the short-term, changes in glycaemia had a high mediation effect. Over the long-term, changes suggestive of haemoconcentration and/or haematopoiesis (natriuresis-related effects), showed the highest percentage of mediation, followed by changes in serum uric acid and body weight (glucosuria-related effects).
Funding Acknowledgement
Type of funding sources: Private company. Main funding source(s): Sponsored by Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA in collaboration with Pfizer Inc., New York, NY, USA
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Affiliation(s)
- D Z I Cherney
- University of Toronto, Division of Nephrology, Toronto, Canada
| | - M Segar
- University of Texas Southwestern Medical Center, Dallas, United States of America
| | - A Pandey
- University of Texas Southwestern Medical Center, Dallas, United States of America
| | - C P Cannon
- Brigham and Women's Hospital, Harvard Medical School, Cardiovascular Divison, Boston, United States of America
| | - F Cosentino
- Karolinska Institute and Karolinska University Hospital Solna, Stockholm, Sweden
| | - S Dagogo-Jack
- University of Tennessee Health Science Center, Memphis, United States of America
| | - R E Pratley
- AdventHealth Translational Research Institute, Memphis, United States of America
| | - R Frederich
- Pfizer Inc., Collegeville, United States of America
| | - N B Cater
- Pfizer Inc., New York, United States of America
| | - M Maldonado
- Merck Sharp & Dohme Limited, London, United Kingdom
| | - J Liu
- Merck & Co., Inc., Kenilworth, New Jersey, United States of America
| | - C.-C Liu
- Merck & Co., Inc., Kenilworth, New Jersey, United States of America
| | - A Pong
- Merck & Co., Inc., Kenilworth, New Jersey, United States of America
| | - D K McGuire
- University of Texas Southwestern Medical Center; Parkland Hospital and Health System, Dallas, United States of America
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8
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Segar MW, Pandey A, Cherney DZI, Cannon CP, Cosentino F, Dagogo-Jack S, Pratley RE, Shih WJ, Frederich R, Cater NB, Maldonado M, Liu J, Liu C, Pong A, McGuire DK. Mediation analyses of the effect of ertugliflozin on hospitalisation for heart failure in patients with type 2 diabetes and atherosclerotic cardiovascular disease from the VERTIS CV trial. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Sodium-glucose cotransporter 2 (SGLT2) inhibitors reduce risk of hospitalisation for heart failure (HHF) in outcome trials, but the biological mediators underlying the therapeutic benefit are not well established.
Purpose
To identify potential biological mediators through which ertugliflozin reduces risk of HHF.
Methods
In VERTIS CV, 8246 patients with type 2 diabetes and atherosclerotic cardiovascular disease were randomised to ertugliflozin 5 or 15 mg (observations pooled as prospectively planned) or placebo. Cox regression models were used to evaluate the associations between changes in 26 potential mediators with outcomes. Potential mediators were selected based on proposed mechanisms and/or differential change from baseline with SGLT2 inhibitors. Mediation criteria required 1) significant (P<0.05 for change from baseline) effects of ertugliflozin vs placebo on each potential mediator; and 2) significant (P<0.05) association of change in post-randomisation levels of the potential mediator with risk of HHF when added to an unadjusted model of randomised treatment assignment. Percent mediation was determined by comparing the unadjusted hazard ratio and hazard ratio adjusted for change in the potential mediator of interest. Each covariate was tested individually, such that percent mediation across the analyses summed to >100%. Time-dependent models were used to evaluate associations between early (change from baseline for the first post-baseline measurement) and average (weighted average of change from baseline using all post-baseline measurements) changes in covariates with clinical outcomes.
Results
Over a mean of 3.5 years, the incidence rate of HHF was 0.7 and 1.1 per 100 patient-years with ertugliflozin and placebo, respectively. Among 26 candidate mediators, 9 and 13 met the mediation criteria based on early and average changes, respectively. The 3 covariates with the largest mediating effects of early changes included haematocrit (40%), haemoglobin (27%) and HDL-C (23%) (Table); other significant biomarkers included urine albumin/creatinine ratio, and serum albumin, uric acid, chloride, protein and sodium. The 3 biomarkers with the largest mediating effects in average changes included haemoglobin (63%), albumin (50%) and uric acid (47%) (Table); other significant biomarkers included haematocrit, urine albumin/creatinine ratio, body weight, serum protein and chloride, systolic blood pressure, ALT, BUN, eGFR and heart rate.
Conclusions
In these analyses from the VERTIS CV trial, potential markers of volume status and haemoconcentration and/or haematopoiesis were the strongest mediators of the effect of ertugliflozin on reducing risk of HHF in the early and average change periods. Other potential mediators included uric acid, lipid markers and kidney parameters. These findings provide insights into potential mechanisms through which ertugliflozin, and potentially the SGLT2 inhibitor class, may prevent HHF.
Funding Acknowledgement
Type of funding sources: Other. Main funding source(s): Sponsored by Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA, and Pfizer Inc., New York, NY, USA.
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Affiliation(s)
- M W Segar
- University of Texas Southwestern Medical Center, Dallas, United States of America
| | - A Pandey
- University of Texas Southwestern Medical Center, Dallas, United States of America
| | | | - C P Cannon
- Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, United States of America
| | - F Cosentino
- Unit of Cardiology, Karolinska Institute & Karolinska University Hospital, Stockholm, Sweden
| | - S Dagogo-Jack
- University of Tennessee Health Science Center, Memphis, United States of America
| | - R E Pratley
- AdventHealth Translational Research Institute, Orlando, United States of America
| | - W J Shih
- Rutgers School of Public Health and Rutgers Cancer Institute of New Jersey, Piscataway, United States of America
| | - R Frederich
- Pfizer Inc., Collegeville, United States of America
| | - N B Cater
- Pfizer Inc., New York, United States of America
| | | | - J Liu
- Merck & Co., Inc., Kenilworth, United States of America
| | - C Liu
- Merck & Co., Inc., Kenilworth, United States of America
| | - A Pong
- Merck & Co., Inc., Kenilworth, United States of America
| | - D K McGuire
- University of Texas Southwestern Medical Center & Parkland Health and Hospital System, Dallas, United States of America
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9
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Strutner J, Ramchandar N, Dubey S, Gamboa M, Vanderpool MK, Mueller T, Wang W, Cannavino C, Tovar Padua L, Malicki D, Pong A. Comparison of RT-PCR Cycle Threshold Values from Respiratory Specimens in Symptomatic and Asymptomatic Children with SARS-CoV-2 Infection. Clin Infect Dis 2021:ciab403. [PMID: 34523670 PMCID: PMC8522411 DOI: 10.1093/cid/ciab403] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Understanding viral kinetics of SARS-CoV-2 is important to assess risk of transmission, manage treatment, and determine the need for isolation and protective equipment. The impact of viral load in asymptomatic infected children is important to understand transmission potential. We sought to determine whether children deemed to be asymptomatic had a difference in the PCR cycle threshold (Ct) value of respiratory samples from symptomatic children with SARS-CoV-2 infection. METHODS This was a retrospective cross-sectional study to compare PCR Ct values of children who tested positive for SARS-CoV-2 by respiratory samples collected over a 4-month period at a large tertiary care children's hospital. RESULTS We analyzed 728 children who tested positive for SARS-CoV-2 by RT-PCR from a respiratory sample over a 4-month period and for whom data was available in the electronic medical record. Overall, 71.2% of infected children were symptomatic. The mean Ct value for symptomatic patients (Ct mean 19.9, SD 6.3) was significantly lower than asymptomatic patients (Ct mean 23.5, SD 6.5) (P value < 0.001, CI 95th 2.6 - 4.6). The mean PCR Ct value was lowest in children less than 5 years of age. CONCLUSIONS In this retrospective review of children who tested positive by RT-PCR for SARS CoV-2, the mean Ct was significantly lower in symptomatic children and was lowest in children under 5 years of age, indicating that symptomatic children and younger children infected with SARS-CoV-2 may have a higher viral load in the nasopharynx compared to asymptomatic children. Further studies are needed to assess the transmission potential from asymptomatic children.
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Affiliation(s)
- John Strutner
- Department of Pediatrics, University of California San Diego, USA
| | - Nanda Ramchandar
- Division of Infectious Diseases, Department of Pediatrics, University of California at San Diego, USA
| | - Shruti Dubey
- School of Medicine, University of California San Diego, USA
| | - Mary Gamboa
- School of Medicine, University of California San Diego, USA
| | | | | | - Wei Wang
- Rady Children’s Hospital, San Diego, USA
| | - Christopher Cannavino
- Division of Infectious Diseases, Department of Pediatrics, University of California at San Diego, USA
- Rady Children’s Hospital, San Diego, USA
| | - Leidy Tovar Padua
- Division of Infectious Diseases, Department of Pediatrics, University of California at San Diego, USA
- Rady Children’s Hospital, San Diego, USA
| | - Denise Malicki
- Department of Pediatrics, University of California San Diego, USA
| | - Alice Pong
- Division of Infectious Diseases, Department of Pediatrics, University of California at San Diego, USA
- Rady Children’s Hospital, San Diego, USA
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10
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Saag K, Cosman F, De Villiers T, Langdahl B, Scott BB, Denker AE, Pong A, Santora AC. Early changes in bone turnover and bone mineral density after discontinuation of long-term oral bisphosphonates: a post hoc analysis. Osteoporos Int 2021; 32:1879-1888. [PMID: 33606045 DOI: 10.1007/s00198-020-05785-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 01/17/2020] [Accepted: 12/07/2020] [Indexed: 10/22/2022]
Abstract
UNLABELLED This post hoc analysis of a randomized, double-blind study of postmenopausal women with osteoporosis found that there were early increases in bone turnover markers and decreases in bone mineral density after discontinuation of long-term alendronate. These findings might help guide treatment decisions, including monitoring after alendronate withdrawal. INTRODUCTION The short-term effects of discontinuing long-term bisphosphonates are poorly characterized. This post hoc analysis investigated 1-12-month changes in bone mineral density (BMD) and bone turnover markers (BTM) after alendronate (ALN) discontinuation. METHODS Data were from a randomized, double-blind trial of MK-5442 (calcium-sensing receptor antagonist) following oral bisphosphonates, with placebo and continued ALN controls ( ClinicalTrials.gov NCT00996801). Postmenopausal women with osteoporosis had received oral bisphosphonate (≥ 3-4 preceding years; ALN for the 12 months pre-screening), continuing on ALN 70 mg/week (n = 87) or placebo (n = 88). RESULTS At 12 months, least-squares mean percent changes from baseline BMD (placebo vs. ALN) were lumbar spine (LS): - 0.36 vs. 1.29, total hip: - 1.44 vs. 0.46, and femoral neck (FN): - 1.26 vs. - 0.08 (all P < 0.05). BTM levels increased by 1-3 months, to 12 months, with placebo vs. ALN (P < 0.001). FN BMD decline was greater in the placebo subgroup with higher urinary N-terminal cross-linked telopeptides of type I collagen/creatinine [uNTx/Cr] (P < 0.01), and higher serum N-terminal pro-peptide of type 1 collagen [P1NP] levels (P < 0.05), at baseline. There was a trend toward greater FN BMD loss with higher BTM levels at 3 and/or 6 months. Younger age and higher LS BMD at baseline were associated with greater LS BMD loss at 12 months (P = 0.04 and < 0.01, respectively); higher baseline FN BMD predicted greater FN BMD loss (P = 0.04). CONCLUSION Early changes in BTM levels and BMD were observed after discontinuation of long-term ALN. Further characterization of factors associated with patients' risk of bone loss upon bisphosphonate discontinuation is warranted.
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Affiliation(s)
- K Saag
- University of Alabama, Birmingham, AL, USA.
| | - F Cosman
- Department of Medicine, Columbia University, New York, NY, USA
| | - T De Villiers
- Stellenbosch University and Mediclinic Panorama, Western Cape, South Africa
| | - B Langdahl
- Aarhus University Hospital, Aarhus, Denmark
| | - B B Scott
- Merck & Co., Inc, Kenilworth, NJ, USA
| | | | - A Pong
- Merck & Co., Inc, Kenilworth, NJ, USA
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11
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Fisher BT, Zaoutis TE, Xiao R, Wattier RL, Castagnola E, Pana ZD, Fullenkamp A, Boge CLK, Ross RK, Yildirim I, Palazzi DL, Danziger-Isakov L, Vora SB, Arrieta A, Yin DE, Avilés-Robles M, Sharma T, Tribble AC, Maron G, Berman D, Green M, Sung L, Romero J, Hauger SB, Roilides E, Belani K, Nolt D, Soler-Palacin P, López-Medina E, Muller WJ, Halasa N, Dulek D, Hussain IZB, Pong A, Hoffman J, Rajan S, Gonzalez BE, Hanisch B, Aftandilian C, Carlesse F, Abzug MJ, Huppler AR, Salvatore CM, Ardura MI, Chakrabarti A, Santolaya ME, Localio AR, Steinbach WJ. Comparative Effectiveness of Echinocandins vs Triazoles or Amphotericin B Formulations as Initial Directed Therapy for Invasive Candidiasis in Children and Adolescents. J Pediatric Infect Dis Soc 2021:piab024. [PMID: 34374424 DOI: 10.1093/jpids/piab024] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 08/09/2021] [Indexed: 12/26/2022]
Abstract
BACKGROUND Invasive candidiasis is the most common invasive fungal disease in children and adolescents, but there are limited pediatric-specific antifungal effectiveness data. We compared the effectiveness of echinocandins to triazoles or amphotericin B formulations (triazole/amphotericin B) as initial directed therapy for invasive candidiasis. METHODS This multinational observational cohort study enrolled patients aged >120 days and <18 years with proven invasive candidiasis from January 1, 2014, to November 28, 2017, at 43 International Pediatric Fungal Network sites. Primary exposure was initial directed therapy administered at the time qualifying culture became positive for yeast. Exposure groups were categorized by receipt of an echinocandin vs receipt of triazole/amphotericin B. Primary outcome was global response at 14 days following invasive candidiasis onset, adjudicated by a centralized data review committee. Stratified Mantel-Haenszel analyses estimated risk difference between exposure groups. RESULTS Seven-hundred and fifty invasive candidiasis episodes were identified. After exclusions, 541 participants (235 in the echinocandin group and 306 in the triazole/amphotericin B group) remained. Crude failure rates at 14 days for echinocandin and triazole/amphotericin B groups were 9.8% (95% confidence intervals [CI]: 6.0% to 13.6%) and 13.1% (95% CI: 9.3% to 16.8%), respectively. The adjusted 14-day risk difference between echinocandin and triazole/amphotericin B groups was -7.1% points (95% CI: -13.1% to -2.4%), favoring echinocandins. The risk difference was -0.4% (95% CI: -7.5% to 6.7%) at 30 days. CONCLUSIONS In children with invasive candidiasis, initial directed therapy with an echinocandin was associated with reduced failure rate at 14 days but not 30 days. These results may support echinocandins as initial directed therapy for invasive candidiasis in children and adolescents. CLINICAL TRIALS REGISTRATION NCT01869829.
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Affiliation(s)
- Brian T Fisher
- Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia Pennsylvania, USA
| | - Theoklis E Zaoutis
- Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia Pennsylvania, USA
| | - Rui Xiao
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia Pennsylvania, USA
| | - Rachel L Wattier
- Department of Pediatrics, Division of Infectious Diseases and Global Health, University of California-San Francisco, San Francisco, California, USA
| | - Elio Castagnola
- Infectious Diseases Unit, Department of Pediatrics, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Zoi Dorothea Pana
- Infectious Disease Unit, 3rd Department of Pediatrics, Aristotle University and Hippokration Hospital, Thessaloniki, Greece
| | - Allison Fullenkamp
- Division of Pediatric Infectious Diseases, Duke University, Durham, North Carolina, USA
| | - Craig L K Boge
- Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Rachael K Ross
- Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Inci Yildirim
- Division of Infectious Diseases, Department of Pediatrics Emory University, Atlanta, Georgia, USA
| | - Debra L Palazzi
- Section of Infectious Diseases, Department of Pediatrics, Baylor College of Medicine and Texas Children's Hospital, Houston, Texas, USA
| | - Lara Danziger-Isakov
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Surabhi B Vora
- Department of Pediatrics, University of Washington and Seattle Children's Hospital, Seattle, Washington, USA
| | - Antonio Arrieta
- Division of Pediatric Infectious Diseases, Children's Hospital - Orange County, Orange, California, US
| | - Dwight E Yin
- Division of Infectious Diseases, Department of Pediatrics, Children's Mercy and University of Missouri-Kansas City School of Medicine, Kansas City, Missouri, USA
| | - Martha Avilés-Robles
- Infectious Diseases Department, Hospital Infantil de México Federico Gómez, Mexico City, Mexico
| | - Tanvi Sharma
- Division of Infectious Diseases Children's Hospital Boston, Boston, Massachusetts, USA
| | - Alison C Tribble
- Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Division of Infectious Diseases, Department of Pediatrics, University of Michigan and CS Mott Children's Hospital, Ann Arbor, Michigan, USA
| | - Gabriela Maron
- Department of Infectious Diseases St. Jude Children's Hospital, Memphis, Tennessee, USA
| | - David Berman
- Division of Pediatric Infectious Diseases, Johns Hopkins All Children's Hospital, St. Petersburg, Florida, USA
| | - Michael Green
- Division of Infectious Diseases, Department of Pediatrics, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania, USA
| | - Lillian Sung
- Department of Pediatrics, The Hospital for Sick Children, Toronto, Canada
| | - José Romero
- Division of Pediatric Infectious Diseases, Arkansas Children's Hospital Research Institute, Little Rock, Arkansas, USA
| | - Sarmistha B Hauger
- Pediatric Infectious Diseases, Dell Children's Medical Center, Austin, Texas, USA
| | - Emmanuel Roilides
- Infectious Disease Unit, 3rd Department of Pediatrics, Aristotle University and Hippokration Hospital, Thessaloniki, Greece
| | - Kiran Belani
- Pediatric Infectious Diseases, Children's Minnesota, Minneapolis, Minnesota, USA
| | - Dawn Nolt
- Division of Pediatric Infectious Diseases, Doernbecher Children's Hospital, Oregon Health & Science University, Portland, Oregon, USA
| | - Pere Soler-Palacin
- Pediatric Infectious Diseases and Immunodeficiencies Unit, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Eduardo López-Medina
- Centro de Estudios en Infectología Pediátrica and Universidad del Valle, Cali Colombia
| | - William J Muller
- Division of Infectious Diseases, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Natasha Halasa
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, US
| | - Daniel Dulek
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, US
| | - Ibrahim Zaid Bin Hussain
- Pediatric Infectious Diseases King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
| | - Alice Pong
- Department of Pediatrics, University of California San Diego, San Diego, California, USA
| | - Jill Hoffman
- Pediatric Infectious Diseases, University of California Los Angeles, Los Angeles, California, USA
| | - Sujatha Rajan
- Division of Pediatric Infectious Diseases, Cohen Children's Medical Center, New Hyde Park, New York, USA
| | - Blanca E Gonzalez
- Center for Pediatric Infectious Diseases, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Benjamin Hanisch
- Pediatric Infectious Diseases, Children's National Health System, Washington, DC, USA
| | - Catherine Aftandilian
- Pediatric Hematology/Oncology, Stanford University School of Medicine, Palo Alto, California, USA
| | - Fabianne Carlesse
- Instituto de Oncologia Pediatrica-IOP/GRAACC-UNIFESP, Sao Paulo, Brazil
| | - Mark J Abzug
- Division of Pediatric Infectious Diseases, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, Colorado, USA
| | - Anna R Huppler
- Department of Pediatrics, Division of Infectious Diseases, Medical College of Wisconsin and Children's Hospital of Wisconsin, Milwaukee, Wisconsin, USA
| | - Christine M Salvatore
- Department of Pediatrics, Division of Pediatric Infectious Diseases Weill Cornell Medicine, New York, New York, USA
| | - Monica I Ardura
- Pediatric Infectious Diseases and Host Defense, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio, USA
| | - Arunaloke Chakrabarti
- Department of Medical Microbiology, Postgraduate Institute of Medical Education & Research, Chandigarh, India
| | - Maria E Santolaya
- Hospital Dr. Luis Calvo Mackenna, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - A Russell Localio
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia Pennsylvania, USA
| | - William J Steinbach
- Division of Pediatric Infectious Diseases, Duke University, Durham, North Carolina, USA
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12
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Wilke J, Ramchandar N, Cannavino C, Pong A, Tremoulet A, Padua LT, Harvey H, Foley J, Farnaes L, Coufal NG. Clinical application of cell-free next-generation sequencing for infectious diseases at a tertiary children's hospital. BMC Infect Dis 2021; 21:552. [PMID: 34112116 PMCID: PMC8192220 DOI: 10.1186/s12879-021-06292-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 06/03/2021] [Indexed: 12/21/2022] Open
Abstract
Background Children affected by infectious diseases may not always have a detectable infectious etiology. Diagnostic uncertainty can lead to prolonged hospitalizations, inappropriately broad or extended courses of antibiotics, invasive diagnostic procedures, and difficulty predicting the clinical course and outcome. Cell-free plasma next-generation sequencing (cfNGS) can identify viral, bacterial, and fungal infections by detecting pathogen DNA in peripheral blood. This testing modality offers the ability to test for many organisms at once in a shotgun metagenomic approach with a rapid turnaround time. We sought to compare the results of cfNGS to conventional diagnostic test results and describe the impact of cfNGS on clinical care in a diverse pediatric population at a large academic children’s hospital. Methods We performed a retrospective chart review of hospitalized subjects at a tertiary pediatric hospital to determine the diagnostic yield of cfNGS and its impact on clinical care. Results We describe the clinical application of results from 142 cfNGS tests in the management of 110 subjects over an 8-month study period. In comparison to conventional testing as a reference standard, cfNGS was found to have a positive percent agreement of 89.6% and negative percent agreement of 52.3%. Furthermore, 32.4% of cfNGS results were directly applied to make a clinical change in management. Conclusions We demonstrate the clinically utility of cfNGS in the management of acutely ill children. Future studies, both retrospective and prospective, are needed to clarify the optimal indications for testing. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-021-06292-4.
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Affiliation(s)
- Julianne Wilke
- Department of Pediatrics, University of California, 3020 Children's Way, San Diego, CA, 92123, USA.,Department of Pediatrics, Rady Children's Hospital of San Diego, San Diego, USA
| | - Nanda Ramchandar
- Department of Pediatrics, University of California, 3020 Children's Way, San Diego, CA, 92123, USA.,Department of Pediatrics, Rady Children's Hospital of San Diego, San Diego, USA
| | - Christopher Cannavino
- Department of Pediatrics, University of California, 3020 Children's Way, San Diego, CA, 92123, USA.,Department of Pediatrics, Rady Children's Hospital of San Diego, San Diego, USA
| | - Alice Pong
- Department of Pediatrics, University of California, 3020 Children's Way, San Diego, CA, 92123, USA.,Department of Pediatrics, Rady Children's Hospital of San Diego, San Diego, USA
| | - Adriana Tremoulet
- Department of Pediatrics, University of California, 3020 Children's Way, San Diego, CA, 92123, USA.,Department of Pediatrics, Rady Children's Hospital of San Diego, San Diego, USA
| | - Leidy Tovar Padua
- Department of Pediatrics, University of California, 3020 Children's Way, San Diego, CA, 92123, USA.,Department of Pediatrics, Rady Children's Hospital of San Diego, San Diego, USA
| | - Helen Harvey
- Department of Pediatrics, University of California, 3020 Children's Way, San Diego, CA, 92123, USA.,Department of Pediatrics, Rady Children's Hospital of San Diego, San Diego, USA
| | - Jennifer Foley
- Department of Pediatrics, Rady Children's Hospital of San Diego, San Diego, USA
| | - Lauge Farnaes
- Department of Pediatrics, Rady Children's Hospital of San Diego, San Diego, USA
| | - Nicole G Coufal
- Department of Pediatrics, University of California, 3020 Children's Way, San Diego, CA, 92123, USA. .,Department of Pediatrics, Rady Children's Hospital of San Diego, San Diego, USA.
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13
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To RK, Ramchandar N, Gupta A, Pong A, Cannavino C, Foley J, Farnaes L, Coufal NG. Use of Plasma Metagenomic Next-generation Sequencing for Pathogen Identification in Pediatric Endocarditis. Pediatr Infect Dis J 2021; 40:486-488. [PMID: 33410648 DOI: 10.1097/inf.0000000000003038] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Pediatric infective endocarditis incurs significant morbidity and generally occurs among children with underlying heart disease. Identification of a pathogen is critical in determining appropriate therapy. However, standard diagnostic testing has limited sensitivity. We describe a case series of children with infective endocarditis in whom plasma next-generation sequencing (Karius, Redwood, CA) identified an organism in 8 of 10 cases.
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Affiliation(s)
- Rachel K To
- From the Chicago Medical School, Rosalind Franklin University of Medicine and Science, Chicago, IL
| | - Nanda Ramchandar
- Department of Pediatrics, University of California, San Diego, CA.,Rady Children's Hospital of San Diego, San Diego, CA
| | - Aamisha Gupta
- Department of Pediatrics, University of California, San Diego, CA.,Rady Children's Hospital of San Diego, San Diego, CA
| | - Alice Pong
- Department of Pediatrics, University of California, San Diego, CA.,Rady Children's Hospital of San Diego, San Diego, CA
| | - Christopher Cannavino
- Department of Pediatrics, University of California, San Diego, CA.,Rady Children's Hospital of San Diego, San Diego, CA
| | | | - Lauge Farnaes
- Rady Children's Hospital of San Diego, San Diego, CA.,Rady Children's Institute for Genomic Medicine, San Diego, CA
| | - Nicole G Coufal
- Department of Pediatrics, University of California, San Diego, CA.,Rady Children's Institute for Genomic Medicine, San Diego, CA
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14
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Cherney D, Charbonnel B, Cosentino F, Pratley R, Dagogo-Jack S, Shih W, McGuire D, Frederich R, Maldonado M, Liu J, Pong A, Liu C, Cannon C. POS-354 WORSENING KIDNEY DISEASE INFLUENCES THE EFFICACY OF ERTUGLIFLOZIN ON GLUCOSURIA-MEDIATED ENDPOINTS BUT DOES NOT INFLUENCE THE EFFICACY ON NATRIURESIS-RELATED ENDPOINTS: PRESPECIFIED ANALYSES FROM VERTIS CV. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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15
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Abstract
Septic thrombophlebitis is a potentially life-threatening condition. Pediatric hematologists are often consulted to provide recommendations regarding anticoagulation management. We conducted a ten-year retrospective, single-center study of hospitalized pediatric patients who were treated for septic thrombophlebitis. Our primary outcome was resolution of thrombophlebitis. Twenty-eight patients were included in the study. Eighty-nine percent of patients received both antibiotic and anticoagulation therapy. The median durations of intravenous and total antibiotic therapy were 47.5 days (range 14-120) and 65 days (range 14-281), respectively, and median duration of anticoagulation therapy was 92 days (range 41-268). Resolution of thrombosis defined by magnetic resonance imaging, computed tomography, or ultrasound imaging was documented in 16 of 28 (57%) patients. Despite the high rate of persistent thrombosis, there was a low risk of relapse of infection in cases where antibiotic and/or anticoagulation was discontinued prior to complete resolution of the thrombus. Further research is needed to determine if duration of antibiotic and/or anticoagulation treatment can be shortened.
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Affiliation(s)
- Jenny Koo
- Department of Pediatrics, UC San Diego, La Jolla, California, USA
| | - Alice Pong
- Department of Pediatrics, UC San Diego, La Jolla, California, USA.,Division of Pediatric Infectious Diseases, Rady Children's Hospital San Diego, San Diego, California, USA
| | - Christopher Dory
- Department of Radiology, Rady Children's Hospital San Diego, San Diego, California, USA
| | - Lauge Farnaes
- Division of Pediatric Infectious Diseases, Rady Children's Hospital San Diego, San Diego, California, USA.,Institute for Genomic Medicine, Rady Children's Hospital San Diego, San Diego, California, USA
| | - Courtney D Thornburg
- Department of Pediatrics, UC San Diego, La Jolla, California, USA.,Division of Hematology/Oncology, Rady Children's Hospital San Diego, San Diego, California, USA
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16
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Ramchandar N, Pong A, Anderson E. Identification of disseminated toxoplasmosis by plasma next-generation sequencing in a teenager with rapidly progressive multiorgan failure following haploidentical stem cell transplantation. Pediatr Blood Cancer 2020; 67:e28205. [PMID: 32020744 DOI: 10.1002/pbc.28205] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 01/03/2020] [Accepted: 01/21/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Nanda Ramchandar
- Department of Pediatrics, Rady Children's Hospital, University of California San Diego, San Diego, California
| | - Alice Pong
- Department of Pediatrics, Rady Children's Hospital, University of California San Diego, San Diego, California
| | - Eric Anderson
- Department of Pediatrics, Rady Children's Hospital, University of California San Diego, San Diego, California
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17
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Farnaes L, Wilke J, Ryan Loker K, Bradley JS, Cannavino CR, Hong DK, Pong A, Foley J, Coufal NG. Community-acquired pneumonia in children: cell-free plasma sequencing for diagnosis and management. Diagn Microbiol Infect Dis 2019; 94:188-191. [PMID: 30819624 PMCID: PMC7125591 DOI: 10.1016/j.diagmicrobio.2018.12.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [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: 10/16/2018] [Revised: 12/14/2018] [Accepted: 12/30/2018] [Indexed: 02/01/2023]
Abstract
Community-acquired pneumonia (CAP) is a common cause of pediatric hospital admission. Empiric antibiotic therapy for hospitalized children with serious CAP now targets the most likely pathogen(s), including those that may demonstrate significant antibiotic resistance. Cell-free plasma next-generation sequencing (CFPNGS) was first made available for Pediatric Infectious Diseases physicians in June 1, 2017, to supplement standard-of-care diagnostic techniques. A retrospective chart review was performed for children hospitalized with CAP between June 1, 2017, and January 22, 2018, to evaluate the impact of CFPNGS. We identified 15 hospitalized children with CAP without other underlying medical conditions for whom CFPNGS was performed. CFPNGS identified a pathogen in 13 of 15 (86%) children compared with 47% for those using standard culture and PCR-based methods alone. Changes in antibiotic management were made in 7 of 15 (47%) of children as a result of CFPNGS.
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Affiliation(s)
- Lauge Farnaes
- University of California San Diego, Department of Pediatrics, Division of Infectious Disease; Rady Children's Institute of Genomic Medicine.
| | - Julianne Wilke
- University of California San Diego, Department of Pediatrics, Division of Critical Care
| | - Kathleen Ryan Loker
- University of California San Diego, Department of Pediatrics, Division of Infectious Disease
| | - John S Bradley
- University of California San Diego, Department of Pediatrics, Division of Infectious Disease
| | - Christopher R Cannavino
- University of California San Diego, Department of Pediatrics, Division of Infectious Disease
| | | | - Alice Pong
- University of California San Diego, Department of Pediatrics, Division of Infectious Disease
| | - Jennifer Foley
- University of California San Diego, Department of Pediatrics, Division of Critical Care
| | - Nicole G Coufal
- University of California San Diego, Department of Pediatrics, Division of Critical Care
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18
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Weinstein C, Jordan K, Green S, Khanani S, Beckford-Brathwaite E, Vallejos W, Pong A, Noga S, Rapoport B. Single-dose fosaprepitant for the prevention of chemotherapy-induced nausea and vomiting in patients with gynecologic cancers receiving moderately emetogenic chemotherapy regimens. Gynecol Oncol 2018. [DOI: 10.1016/j.ygyno.2018.04.370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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19
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Newland JG, Gerber JS, Kronman MP, Meredith G, Lee BR, Thurm C, Hersh AL, Berman DM, Handy L, Chan S, Tribble AC, Klein K, Maples H, Stahl D, Flett KB, Shapiro C, Fernandez AJ, Child J, Hurst AL, Parker SK, Pearce K, Mongkolrattanothai K, Metjian T, Grapentine S, Pomputius W, Goldman J, Yu D, Patel K, Yarbrough A, Cassady KA, Courter J, Haslam D, Thurman R, Mazade M, Varman M, Green A, Zwiener J, Simonsen K, Stec R, Bennett N, Girotto JE, Nolt D, Thomas J, Olivero R, Van Dyke C, Smith MJ, Lee K, Arnold SR, Schwenk H, Lee B, Patel SJ, Patel R, Calderon R, Dixon TC, Jaggi P, Tansmore J, Olson J, Thorell EM, Pong A, Nichols K, Cox E, Weissman S, Brothers A, Pak D, Bridger K, Poole N, Nelson M, Hymes S, Taylor R, Palazzi D, Wattier R, Faldasz J, Naeem F, Kuzmic B, Islam S. Sharing Antimicrobial Reports for Pediatric Stewardship (SHARPS): A Quality Improvement Collaborative. J Pediatric Infect Dis Soc 2018; 7:124-128. [PMID: 28379408 DOI: 10.1093/jpids/pix020] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 02/22/2017] [Indexed: 11/14/2022]
Abstract
BACKGROUND Although many children's hospitals have established antimicrobial stewardship programs (ASPs), data-driven benchmarks for optimizing antimicrobial use across centers are lacking. We developed a multicenter quality improvement collaborative focused on sharing data reports and benchmarking antimicrobial use to improve antimicrobial prescribing among hospitalized children. METHODS A national antimicrobial stewardship collaborative among children's hospitals, Sharing Antimicrobial Reports for Pediatric Stewardship (SHARPS), was established in 2013. Characteristics of the hospitals and their ASPs were obtained through a standardized survey. Antimicrobial-use data reports were developed on the basis of input from the participating hospitals. Collaborative learning opportunities were provided through monthly webinars and annual meetings. RESULTS Since 2013, 36 US hospitals have participated in the SHARPS collaborative. The median full-time equivalent (pharmacist and physician) dedicated to 30 of these ASPs was 0.75 (interquartile range, 0.45-1.4). To date, the collaborative has developed 26 data reports that include benchmarking reports according to specific antimicrobial agents, indications, and clinical service lines. The collaborative has conducted 27 webinars and 3 in-person meetings to highlight the stewardship work being conducted in the hospitals. The data reports and learning opportunities have resulted in approximately 36 distinct stewardship interventions. CONCLUSION A pediatric antimicrobial stewardship collaborative has been successful in promoting the development of and innovation among pediatric ASPs. Additional research is needed to determine the impact of these efforts.
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Affiliation(s)
- Jason G Newland
- Division of Pediatric Infectious Diseases, Washington University in St. Louis School of Medicine, Missouri
| | - Jeffrey S Gerber
- Division of Infectious Diseases, Children's Hospital of Philadelphia, Pennsylvania.,Department of Biostatistics and Epidemiology, Perelman School of Medicine of the University of Pennsylvania, Philadelphia
| | - Matthew P Kronman
- Division of Pediatric Infectious Diseases, University of Washington, Seattle.,Center for Clinical and Translational Research, Seattle Children's Hospital Research Institute, Washington
| | - Georgann Meredith
- Division of Pediatric Infectious Diseases, Children's Mercy Hospital and Clinics, Kansas City, Missouri
| | - Brian R Lee
- Division of Pediatric Infectious Diseases, Children's Mercy Hospital and Clinics, Kansas City, Missouri.,Health Services and Outcomes Research, Children's Mercy Hospital and Clinics, Kansas City, Missouri
| | - Cary Thurm
- Children's Hospital Association, Statistical Analysis Services, Washington, DC
| | - Adam L Hersh
- Division of Pediatric Infectious Diseases, University of Utah School of Medicine, Salt Lake City
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20
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Chaparro J, Murphy E, Davis C, Viani RM, Pong A. Chest Pain and Shortness of Breath in a Previously Healthy Teenager. J Pediatric Infect Dis Soc 2015; 4:171-3. [PMID: 26407419 DOI: 10.1093/jpids/piu036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 03/29/2014] [Indexed: 11/14/2022]
Affiliation(s)
- Juan Chaparro
- Department of Pediatrics, Division of Infectious Diseases Department of Pediatrics
| | | | - Christopher Davis
- Department of Pediatrics Department of Pediatrics, Division of Cardiology, University of California San Diego School of Medicine - Rady Children's Hospital San Diego
| | - Rolando M Viani
- Department of Pediatrics, Division of Infectious Diseases Department of Pediatrics
| | - Alice Pong
- Department of Pediatrics, Division of Infectious Diseases Department of Pediatrics
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21
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Jugé L, Pong A, Bongers A, Sinkus R, Bilston LE, Cheng S. Deformation, microstructure and stiffness of the rat brain tissue during the development of experimental obstructive hydrocephalus. Fluids Barriers CNS 2015. [PMCID: PMC4583162 DOI: 10.1186/2045-8118-12-s1-o6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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22
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Samady W, Bush R, Pong A, Andrews A, Fisher ES. Predictors of Clostridium difficile infections in hospitalized children. J Hosp Med 2014; 9:94-8. [PMID: 24343932 DOI: 10.1002/jhm.2135] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 11/15/2013] [Accepted: 11/21/2013] [Indexed: 12/14/2022]
Abstract
BACKGROUND Recent studies report an increasing incidence of Clostridium difficile infections (CDIs) in children and suggest that CDIs may occur outside known populations at risk. OBJECTIVE To identify clinical factors associated with CDI in a hospitalized pediatric population. METHODS A retrospective case-control study was conducted with C difficile cases (CD) and controls (CTLs) in hospitalized children over a 2-year period. CDs (N = 134) and 2:1 age-matched CTLs (N = 274) with diarrheal illness were evaluated. RESULTS CDs and CTLs were similar in gender and race. Watery diarrhea was the most common type of diarrhea in CDs and CTLs. Immunodeficiency (46% vs 6%; P < 0.001), gastrointestinal (GI) disease (31% vs 18%; P = 0.005), and proton pump inhibitor (PPI) use (22% vs 7%; P < 0.001) were more frequent in CDs. Of CDs, 30% were defined as community acquired. Bloody diarrhea was more frequent in community-acquired CD (28% vs 4% P < 0.001); however, other clinical variables were not statistically different. No antibiotic exposure, recent hospitalization, prolonged hospitalization, or past history of CDI existed in 8% of CDs. Multivariate logistic regression demonstrated that antibiotic use (odds ratio [OR]: 2.80, P = 0.001), recent hospitalization (OR: 2.33, P = 0.007), and immunodeficiency (OR: 6.02, P < 0.001) were significantly associated with cases when controlling for PPI use, having GI disease, and history of abdominal surgery. CONCLUSIONS Clinical history is of greater value than symptoms in distinguishing CD, with immunodeficiency having the strongest association. An important percentage of CDs did not have any risk factors, confirming concerns that CDIs do occur in otherwise low-risk pediatric populations.
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23
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Pong A, Moser KS, Park SM, Magit A, Garcia MI, Bradley JS. Evaluation of an Interferon Gamma Release Assay to Detect Tuberculosis Infection in Children in San Diego, California. J Pediatric Infect Dis Soc 2012; 1:74-7. [PMID: 26618694 DOI: 10.1093/jpids/pis013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Accepted: 01/21/2012] [Indexed: 11/13/2022]
Abstract
QuantiFERON-TB Gold In-Tube (QFT-GIT) and tuberculin skin test (TST) results are reported in 23 children with active tuberculosis due to Mycobacterium tuberculosis and Mycobacterium bovis. Overall QFT-GIT (96%) was more sensitive than TST (74%) for detecting tuberculosis infection in these patients.
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Affiliation(s)
| | - Kathleen S Moser
- Pediatric Otolarynogology, Rady Children's Hospital San Diego, University of California San Diego
| | | | - Anthony Magit
- Pediatric Otolarynogology, Rady Children's Hospital San Diego, University of California San Diego
| | - Maria Isabel Garcia
- TB and Refugee Branch, San Diego County Health and Human Services Agency Scripps Whittier Diabetes Institute, La Jolla, California
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24
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Matiz C, Tom WL, Eichenfield LF, Pong A, Friedlander SF. Children with atopic dermatitis appear less likely to be infected with community acquired methicillin-resistant Staphylococcus aureus: the San Diego experience. Pediatr Dermatol 2011; 28:6-11. [PMID: 21070347 DOI: 10.1111/j.1525-1470.2010.01293.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Given the increasing rate of community-acquired methicillin resistant Staphylococcus aureus skin infections in the population, such infections might be concurrently increasing in patients with atopic dermatitis. This study assessed current and prior rates of community-acquired methicillin resistant Staphylococcus aureus and methicillin-susceptible Staphylococcus aureus skin and soft tissue infections in children with atopic dermatitis compared to the general pediatric population. Other antibiotic sensitivity and resistance patterns, including clindamycin-inducible resistance, were also identified. Retrospective study of all skin and soft tissue isolates were positive for Staphylococcus aureus during two distinct 1-year periods, obtained by the outpatient services and the emergency department at Rady Children's Hospital, the major regional pediatric health center in San Diego, California. Of the Staphylococcus aureus isolates obtained from January to December 2000, none from atopic dermatitis patients were methicillin resistant Staphylococcus aureus, while 4.2% of those obtained from the general outpatient pediatric population showed methicillin resistance. In the period from June 2007 to May 2008, 11 of 78 isolates (14.1%) from children with atopic dermatitis were methicillin resistant Staphylococcus aureus. This was significantly lower than the rate of increase noted in the general pediatric population (658 of 1482, or 44.4%, in 2007/2008, p < 0.05). Clindamycin-inducible resistance was noted in 1.9% of the isolates in the general population; all six tested isolates from atopic patients lacked clindamycin-inducible resistance. In this study, children with atopic dermatitis had a much lower rate of community-acquired methicillin resistant Staphylococcus aureus infection compared to the general outpatient pediatric population. Clindamycin-inducible resistance was very low in both groups.
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Affiliation(s)
- Catalina Matiz
- Division of Pediatric Dermatology, University of California, San Diego and Rady Children's Hospital, San Diego, California 92123, USA
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25
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Abstract
Fungi from the Zygomycetes class are increasingly recognized causes of infection in immunosuppressed children, but no comprehensive literature review and few case series have been published on the topic. A case series of 6 pediatric oncology patients with Zygomycetes infections cared for at our institution was constructed, and a concurrent search of the English language literature for Zygomycetes infections in children with oncologic disorders was undertaken. Our case series described 6 patients (5 male) between the ages of 2.5 and 19.5 years. One patient was diagnosed with rhinocerebral disease, 2 with rhinosinusitis, 2 with pulmonary involvement, and 1 with a gastrointestinal presentation. Five patients survived. Our literature review identified 82 cases from 61 studies. The mean subject age was 10.8 years (1.4 to 21.0 y). About 92.7% of all patients suffered from some form of leukemia, with 70.7% suffering from acute lymphoblastic leukemia. Overall, 58.5% of reported patients survived, with individuals with disseminated disease showing the worst prognosis (68.2% mortality) and those with cutaneous disease the best (14.3% mortality). Survival is increasingly reported in the literature, perhaps as a result of improved diagnostic capabilities, increased physician awareness and increased reliance on adjunctive surgical therapy.
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Affiliation(s)
- Walter Dehority
- Department of Pediatrics, The University of New Mexico Health Sciences Center, Albuquerque, NM 87131-0001, USA.
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26
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Mewett KN, Fernandez SP, Pasricha AK, Pong A, Devenish SO, Hibbs DE, Chebib M, Johnston GAR, Hanrahan JR. Synthesis and biological evaluation of flavan-3-ol derivatives as positive modulators of GABAA receptors. Bioorg Med Chem 2009; 17:7156-73. [PMID: 19783443 DOI: 10.1016/j.bmc.2009.08.062] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2009] [Revised: 08/21/2009] [Accepted: 08/29/2009] [Indexed: 10/20/2022]
Abstract
We herein describe the synthesis and positive modulatory activities of a small library of flavan-3-ol derivatives on alpha(1)beta(2)gamma(2L) GABA(A) receptors. Structure-activity relationships of various substituents on the A, B and C rings were evaluated in a functional electrophysiological assay. A trans configuration and a 3-acetoxy moiety are essential for activity. Substitution of the B ring appears to be well tolerated, with substituents on the A ring playing a major role in determining activity.
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Affiliation(s)
- Kenneth N Mewett
- Adrien Albert Laboratory of Medicinal Chemistry, Department of Pharmacology, Faculty of Medicine, The University of Sydney, NSW 2006, Australia
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27
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Saitoh A, Pong A, Waecker NJ, Leake JAD, Nespeca MP, Bradley JS. Prediction of neurologic sequelae in childhood tuberculous meningitis: a review of 20 cases and proposal of a novel scoring system. Pediatr Infect Dis J 2005; 24:207-12. [PMID: 15750455 DOI: 10.1097/01.inf.0000154321.61866.2d] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [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: 11/25/2022]
Abstract
BACKGROUND Despite effective antituberculous medications, the mortality and morbidity remain high in children with tuberculous meningitis (TBM). The traditional clinical staging for TBM developed by Lincoln et al in 1960 has been widely used to predict long term neurologic sequelae (NS). In the current era of critical care medicine and corticosteroid therapy, a new scoring system is needed to predict NS more accurately in children with TBM. METHODS We reviewed all available cases of TBM in San Diego, CA, during 1991-2001 retrospectively, and we developed a novel scoring system to predict NS in children with TBM. We assessed a tuberculous meningitis acute neurologic (TBAN) score at day 0 and on day 3 of hospitalization, to compare children who subsequently developed severe NS with those who did not. RESULTS Among 20 children with TBM, 7 children developed severe NS and 1 child died during hospitalization. The TBAN score was higher on day 0 in those with severe NS (5.5 versus 2.0, P = 0.09), and the difference became statistically significant by day 3 of hospitalization (5.5 versus 0.0, P = 0.02). Sensitivity and specificity of the TBAN score (> or =4) on day 0 (75 and 92%) and day 3 (88 and 100%) to predict severe NS were superior to the traditional clinical staging system on day 0 (63 and 58%). CONCLUSIONS The TBAN score is an objective marker for predicting severe NS in children with TBM.
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Affiliation(s)
- Akihiko Saitoh
- Division of Infectious Diseases, Department of Pediatrics, University of California, San Diego, CA, USA
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28
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Abstract
Antibiotic resistance in nosocomial infections is an ever-increasing problem as health care institutions provide care for children with more complicated medical and surgical problems. Several mechanisms of antibiotic resistance are reviewed for both gram-negative and gram-positive nosocomial pathogens. These adaptive resistance mechanisms allow organisms to survive in an environment of extensive antibiotic use and result in clinically significant infections. Mobile genetic elements have facilitated the rapid spread of antibiotic resistance within and among species. The clinical challenge faced by many practitioners is to understand these mechanisms of antibiotic resistance and to develop strategies for successfully treating infection caused by resistant pathogens. Nosocomial outbreaks caused by resistant organisms are described, and an approach to empiric therapy based on presumed pathogens, site of infection, and local resistance patterns is discussed.
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Affiliation(s)
- Alice Pong
- Division of Infectious Diseases, Children's Hospital and Health Center, San Diego, CA 92123, USA
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29
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Abstract
The cavum septi pellucidi and cavum vergae are unusual sites of intracranial infection. A child is reported with infection of the cavum septi pellucidi and cavum vergae associated with pneumococcal meningitis. The patient required surgical drainage of the abscess despite appropriate antibiotic therapy, and the clinical outcome was excellent.
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Affiliation(s)
- Alice Pong
- Division of Pediatric Infectious Diseases, Chiuldren's Hospital and Health Center, University of California San Diego, San Diego, CA, USA
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30
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Abstract
In the U.S. Food and Drug Administration (FDA) guidelines for stability testing of new drug products, both bracketing and matrixing designs were suggested as the statistical designs. More recently, they have increasing attention from pharmaceutical companies, because both designs reduce the cost of stability studies. The purpose of this paper is to investigate both designs in terms of the power of detection of significant difference between slopes, and use the mean square error to evaluate the precision of estimated drug shelf life. Additionally, the distributions of both designs are compared by using 1000 simulations.
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Affiliation(s)
- A Pong
- Berlex Laboratories, Inc., Montville, New Jersey 07045-1000, USA
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31
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Abstract
This open-label, multicenter study evaluated the efficacy, safety, and cycle control of Yasmin, a new low-dose, monophasic oral contraceptive containing the unique progestogen drospirenone (DRSP) 3 mg and ethinyl estradiol (EE) 30 microg. DRSP is a synthetic progestogen that has antiandrogenic and antimineralocorticoid effects. In this study, 326 women were evaluated and 220 (67%) completed all 13 treatment cycles. The corrected Pearl Index was 0. 407. Of the 151 subjects who experienced intermenstrual bleeding at any time during the study, the majority (64%) had bleeding during only one or two pill cycles. Breakthrough bleeding without spotting occurred in 1% of all cycles, spotting without breakthrough bleeding in 9.3% of all cycles, and breakthrough bleeding with spotting in 3% of all cycles. Amenorrhea was observed in 3% of all cycles. In all, 20 subjects (6%) discontinued participation in the study because of adverse events. No serious adverse events related to the study drug were reported. No clinically significant changes in weight, blood pressure, or lipids were reported. The impact of the new progestogen DRSP on the women's self-perception of menstrual health was also evaluated. Subjects reported that symptoms of water retention, negative affect, and increased appetite significantly improved at cycle 6 from baseline. This study demonstrates that Yasmin is an effective oral contraceptive that is safe and well tolerated.
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MESH Headings
- Adolescent
- Adult
- Androstenes/adverse effects
- Androstenes/standards
- Androstenes/therapeutic use
- Blood Pressure
- Body Weight
- Contraceptives, Oral, Combined/adverse effects
- Contraceptives, Oral, Combined/standards
- Contraceptives, Oral, Combined/therapeutic use
- Contraceptives, Oral, Hormonal/adverse effects
- Contraceptives, Oral, Hormonal/standards
- Contraceptives, Oral, Hormonal/therapeutic use
- Ethinyl Estradiol/adverse effects
- Ethinyl Estradiol/standards
- Ethinyl Estradiol/therapeutic use
- Female
- Humans
- Lipids/blood
- Menstruation Disturbances/chemically induced
- Mineralocorticoid Receptor Antagonists/adverse effects
- Mineralocorticoid Receptor Antagonists/standards
- Mineralocorticoid Receptor Antagonists/therapeutic use
- Patient Compliance
- Progesterone Congeners/adverse effects
- Progesterone Congeners/standards
- Progesterone Congeners/therapeutic use
- Surveys and Questionnaires
- Uterine Hemorrhage/chemically induced
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Affiliation(s)
- K S Parsey
- Berlex Laboratories, Montville, New Jersey 07045-1000, USA
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32
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Carlile GW, Chalmers-Redman RM, Tatton NA, Pong A, Borden KE, Tatton WG. Reduced apoptosis after nerve growth factor and serum withdrawal: conversion of tetrameric glyceraldehyde-3-phosphate dehydrogenase to a dimer. Mol Pharmacol 2000; 57:2-12. [PMID: 10617673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023] Open
Abstract
Antisense oligonucleotides against the glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH) are able to reduce some forms of apoptosis. In those forms, overall GAPDH levels increase and the enzyme accumulates in the nucleus. The monoamine oxidase B (MAO-B) inhibitor, (-)-deprenyl (DEP), its metabolite (-)-desmethyldeprenyl, and a tricyclic DEP analog, CGP3466, can reduce apoptosis independently of MAO-B inhibition and have been found to bind to GAPDH. We used neuronally differentiated PC12 cells to show that DEP, DES, and CGP3466 reduce apoptosis caused by serum and nerve growth factor withdrawal over the concentration range of 10(-) to 10(-13) M. We provide evidence that the DEP-like compounds bind to GAPDH in the PC12 cells and that they prevent both the apoptotic increases in GAPDH levels and nuclear accumulation of GAPDH. In vitro, the compounds enhanced the conversion of NAD(+) to NADH by GAPDH in the presence of AUUUA-rich RNA and converted GAPDH from its usual tetrameric form to a dimeric form. Using cell lysates, we found a marked increase in rates of NAD(+) to NADH conversion in early apoptosis, which was returned toward control values by the DEP-like compounds. Accordingly, the DEP-like compounds appear to decrease glycolysis by preventing the GAPDH increases in early apoptosis. GAPDH dimer may not have the capacity to contribute to apoptosis in a similar manner to the tetramer, which might account for the antiapoptotic capacity of the compounds. These actions on GAPDH, rather than MAO-B inhibition, may contribute to the improvements in Parkinson's and Huntington's diseases found with DEP treatment.
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Affiliation(s)
- G W Carlile
- Department of Neurology, Mount Sinai School of Medicine, New York, New York, USA
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33
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Pong A, Thomson KS, Moland ES, Chartrand SA, Sanders CC. Activity of moxifloxacin against pathogens with decreased susceptibility to ciprofloxacin. J Antimicrob Chemother 1999; 44:621-7. [PMID: 10552978 DOI: 10.1093/jac/44.5.621] [Citation(s) in RCA: 32] [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: 11/13/2022] Open
Abstract
A panel of 279 clinical isolates of Gram-positive cocci and Gram-negative bacilli with varying levels of resistance to ciprofloxacin were analysed for susceptibility to moxifloxacin, ciprofloxacin, ofloxacin and nalidixic acid. Moxifloxacin was eight- to 32-fold more potent than ciprofloxacin and ofloxacin against staphylococci and Streptococcus pneumoniae, and equivalent to eight-fold more potent against enterococci. Although ciprofloxacin was intrinsically more potent than the other quinolones against highly susceptible Gram-negative isolates, the percentages of Gram-negative isolates susceptible to 1 mg/L of moxifloxacin or ciprofloxacin, or 2 mg/L of ofloxacin were 78%, 80% and 76%, indicating in-vitro equivalence of the agents against a collection that included isolates with diminished quinolone susceptibility. Staphylococci were analysed according to their ciprofloxacin susceptibility status. As ciprofloxacin resistance increased to high levels, all quinolone MICs increased, but moxifloxacin and ofloxacin MICs increased less than ciprofloxacin MICs. In mutational studies moxifloxacin inhibited more mutants (69%) at a concentration of 1 mg/L than did ciprofloxacin (63%) at 1 mg/L or ofloxacin at 2 mg/L (31%). The study indicated that moxifloxacin is more potent than ciprofloxacin and ofloxacin against Gram-positive pathogens, may be comparable in activity against less quinolone-susceptible Gram-negative isolates (other than Pseudomonas aeruginosa), and is less affected than ciprofloxacin by mechanisms responsible for increasing quinolone resistance in staphylococci.
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Affiliation(s)
- A Pong
- Department of Paediatrics, Creighton University School of Medicine, Omaha, NE 68178, USA
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Abstract
Bacterial meningitis in the neonate differs from meningitis in the older infant and child in a number of ways. Bacterial pathogens primarily are associated with the maternal genitourinary tract. Symptoms and physical findings may be nonspecific, and a high index of suspicion is needed. Management may vary depending on the maturity of the infant and the bacterial pathogen that is isolated.
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Affiliation(s)
- A Pong
- Department of Pediatrics, University of California San Diego School of Medicine, USA
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Chalmers-Redman RM, Fraser AD, Carlile GW, Pong A, Tatton WG. Glucose protection from MPP+-induced apoptosis depends on mitochondrial membrane potential and ATP synthase. Biochem Biophys Res Commun 1999; 257:440-7. [PMID: 10198232 DOI: 10.1006/bbrc.1999.0487] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.9] [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: 11/22/2022]
Abstract
MPP+ inhibits mitochondrial complex I and alpha-ketoglutarate dehydrogenase causing necrosis or apoptosis of catecholaminergic neurons. Low glucose levels or glycolytic blockade has been shown to potentiate MPP+ toxicity. We found that MPP+ caused concentration-dependent apoptosis of neuronally differentiated PC12 cells and that glucose, but not pyruvate, supplementation reduced apoptosis. Oligomycin concentrations sufficient to inhibit ATP synthase blocked the decreased apoptosis afforded by glucose supplementation. Laser-scanning confocal microscope imaging of chloromethyl-tetramethylrosamine methyl ester fluorescence to estimate DeltaPsiM showed that MPP+ and atractyloside reduced DeltaPsiM, while cyclosporin A (CSA) and glucose supplementation reversed decreases in DeltaPsiM caused by MPP+. Oligomycin blocked the effect of glucose supplementation on DeltaPsiM. These findings show that (i) MPP+-induced and atractyloside-induced apoptosis are associated with reduced DeltaPsiM; (ii) CSA maintains DeltaPsiM and reduces MPP+-induced apoptosis; and (iii) glucose supplementation maintains DeltaPsiM, likely by glycolytic ATP-dependent proton pumping at ATP synthase and reduces MPP+-induced apoptosis.
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Affiliation(s)
- R M Chalmers-Redman
- Department of Neurology, Mount Sinai School of Medicine, One Gustave L. Levy Place, New York, New York, 10029-6574, USA
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Affiliation(s)
- A Pong
- Department of Pediatrics, Creighton University School of Medicine, Omaha, NE 68178, USA
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Affiliation(s)
- S A Chartrand
- Creighton University, Department of Pediatrics, Omaha, NE 68178, USA
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Lister PD, Pong A, Chartrand SA, Sanders CC. Rationale behind high-dose amoxicillin therapy for acute otitis media due to penicillin-nonsusceptible pneumococci: support from in vitro pharmacodynamic studies. Antimicrob Agents Chemother 1997; 41:1926-32. [PMID: 9303386 PMCID: PMC164037 DOI: 10.1128/aac.41.9.1926] [Citation(s) in RCA: 34] [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: 02/05/2023] Open
Abstract
To evaluate whether increased doses of amoxicillin should be used to treat acute pneumococcal otitis media, an in vitro pharmacokinetic model was used to evaluate the killing of pneumococci by amoxicillin when middle ear pharmacokinetics were simulated. Logarithmic-phase cultures were exposed to peak concentrations of 3, 6, and 9 microg of amoxicillin per ml every 12 h, and an elimination half-life of 1.6 h was simulated. Changes in viable bacterial counts were measured over 36 h. All three doses rapidly decreased the viable bacterial counts of penicillin-susceptible strains below the 10-CFU/ml limit of detection by 6 to 10 h and maintained counts below this limit through 36 h. The 3-microg/ml peak dose was much less effective against two of three strains with intermediate penicillin resistance and all three penicillin-resistant strains, with bacterial counts approaching those in drug-free control cultures by 12 h. The 6-microg/ml peak dose completely eliminated two of three strains with intermediate penicillin resistance and maintained viable counts of the other nonsusceptible strains at 1.5 to 2 logs below the initial inoculum through 36 h. The 9-microg/ml peak dose was most effective, completely eliminating all three strains with intermediate penicillin resistance and maintaining the viable counts of the resistant strains at 3 to 4 logs below the original inoculum. The pharmacodynamics observed in this study suggest that peak concentrations of amoxicillin of 6 to 9 microg/ml may be sufficient for the elimination of penicillin-nonsusceptible pneumococcal strains causing otitis media, especially those with intermediate resistance to amoxicillin. In vivo pharmacokinetic studies are needed to determine if these levels can be achieved in middle ear fluid with amoxicillin at 70 to 90 mg/kg/day divided into two daily doses. If these levels are reliably achieved, then clinical studies are warranted.
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Affiliation(s)
- P D Lister
- Center for Research in Anti-Infectives and Biotechnology, Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, Nebraska 68178, USA
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