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Brar NK, Dhariwal A, Åmdal HA, Junges R, Salvadori G, Baker JL, Edlund A, Petersen FC. Exploring ex vivo biofilm dynamics: consequences of low ampicillin concentrations on the human oral microbiome. NPJ Biofilms Microbiomes 2024; 10:37. [PMID: 38565843 PMCID: PMC10987642 DOI: 10.1038/s41522-024-00507-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 03/20/2024] [Indexed: 04/04/2024] Open
Abstract
Prolonged exposure to antibiotics at low concentration can promote processes associated with bacterial biofilm formation, virulence and antibiotic resistance. This can be of high relevance in microbial communities like the oral microbiome, where commensals and pathogens share a common habitat and where the total abundance of antibiotic resistance genes surpasses the abundance in the gut. Here, we used an ex vivo model of human oral biofilms to investigate the impact of ampicillin on biofilm viability. The ecological impact on the microbiome and resistome was investigated using shotgun metagenomics. The results showed that low concentrations promoted significant shifts in microbial taxonomic profile and could enhance biofilm viability by up to 1 to 2-log. For the resistome, low concentrations had no significant impact on antibiotic resistance gene (ARG) diversity, while ARG abundance decreased by up to 84%. A positive correlation was observed between reduced microbial diversity and reduced ARG abundance. The WHO priority pathogens Streptococcus pneumoniae and Staphylococcus aureus were identified in some of the samples, but their abundance was not significantly altered by ampicillin. Most of the antibiotic resistance genes that increased in abundance in the ampicillin group were associated with streptococci, including Streptococcus mitis, a well-known potential donor of ARGs to S. pneumoniae. Overall, the results highlight the potential of using the model to further our understanding of ecological and evolutionary forces driving antimicrobial resistance in oral microbiomes.
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Affiliation(s)
- N K Brar
- Institute of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - A Dhariwal
- Institute of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - H A Åmdal
- Institute of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - R Junges
- Institute of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - G Salvadori
- Institute of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - J L Baker
- Department of Oral Rehabilitation & Biosciences, Oregon Health & Science University, Portland, OR, USA
- Microbial and Environmental Genomics, J. Craig Venter Institute, La Jolla, CA, USA
- Department of Pediatrics, UC San Diego School of Medicine, La Jolla, CA, USA
| | - A Edlund
- Microbial and Environmental Genomics, J. Craig Venter Institute, La Jolla, CA, USA
- Department of Pediatrics, UC San Diego School of Medicine, La Jolla, CA, USA
| | - F C Petersen
- Institute of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway.
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Aarestrup J, Pedersen DC, Bjerregaard LG, Jensen BW, Leth-Møller KB, Jacobsen RK, Johnson W, Baker JL. Trends in childhood body mass index between 1936 and 2011 showed that underweight remained more common than obesity among 398 970 Danish school children. Acta Paediatr 2024; 113:818-826. [PMID: 37776041 DOI: 10.1111/apa.16980] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/28/2023] [Accepted: 09/19/2023] [Indexed: 10/01/2023]
Abstract
AIM To examine trends in all body mass index (BMI) groups in children from 1936 to 2011. METHODS We included 197 694 girls and 201 276 boys from the Copenhagen School Health Records Register, born between 1930 and 1996, with longitudinal weight and height measurements (6-14 years). Using International Obesity Task Force criteria, BMI was classified as underweight, normal-weight, overweight and obesity. Sex- and age-specific prevalences were calculated. RESULTS From the 1930s, the prevalence of underweight was stable until a small increase occurred from 1950 to 1970s, and thereafter it declined into the early 2000s. Using 7-year-olds as an example, underweight changed from 10% to 7% in girls and from 9% to 6% in boys during the study period. The prevalence of overweight plateaued from 1950 to 1970s and then steeply increased from 1970s onwards and in 1990-2000s 15% girls and 11% boys at 7 years had overweight. The prevalence of obesity particularly increased from 1980s onwards and in 1990-2000s 5% girls and 4% boys at 7 years had obesity. These trends slightly differed by age. CONCLUSION Among Danish schoolchildren, the prevalence of underweight was greater than overweight until the 1980s and greater than obesity throughout the period. Thus, monitoring the prevalence of childhood underweight remains an important public health issue.
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Affiliation(s)
- J Aarestrup
- Center for Clinical Research and Prevention, Copenhagen University Hospital-Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - D C Pedersen
- Center for Clinical Research and Prevention, Copenhagen University Hospital-Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - L G Bjerregaard
- Center for Clinical Research and Prevention, Copenhagen University Hospital-Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - B W Jensen
- Center for Clinical Research and Prevention, Copenhagen University Hospital-Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - K B Leth-Møller
- Center for Clinical Research and Prevention, Copenhagen University Hospital-Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - R K Jacobsen
- Center for Clinical Research and Prevention, Copenhagen University Hospital-Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - W Johnson
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - J L Baker
- Center for Clinical Research and Prevention, Copenhagen University Hospital-Bispebjerg and Frederiksberg, Copenhagen, Denmark
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Weghuber D, Khandpur N, Boyland E, Mazur A, Frelut ML, Forslund A, Vlachopapadopoulou E, Erhardt É, Vania A, Molnar D, Ring-Dimitriou S, Caroli M, Mooney V, Forhan M, Ramos-Salas X, Pulungan A, Holms JC, O'Malley G, Baker JL, Jastreboff AM, Baur L, Thivel D. Championing the use of people-first language in childhood overweight and obesity to address weight bias and stigma: A joint statement from the European-Childhood-Obesity-Group (ECOG), the European-Coalition-for-People-Living-with-Obesity (ECPO), the International-Paediatric-Association (IPA), Obesity-Canada, the European-Association-for-the-Study-of-Obesity Childhood-Obesity-Task-Force (EASO-COTF), Obesity Action Coalition (OAC), The Obesity Society (TOS) and the World-Obesity-Federation (WOF). Pediatr Obes 2023; 18:e13024. [PMID: 37002830 DOI: 10.1111/ijpo.13024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 09/15/2022] [Revised: 02/06/2023] [Accepted: 02/20/2023] [Indexed: 05/04/2023]
Affiliation(s)
- D Weghuber
- European Childhood Obesity Group (ECOG), Brussels, Belgium
- Department of Pediatrics, Obesity Research Unit, Paracelsus Medical University, Salzburg, Austria
| | - N Khandpur
- Division of Human Nutrition and Health, Wageningen Universiteit, Wageningen, The Netherlands
- Department of Nutrition, Faculty of Public Health, University of São Paulo, São Paulo, Brazil
| | - E Boyland
- European Childhood Obesity Group (ECOG), Brussels, Belgium
- Appetite & Obesity Research Group, Department of Psychology, University of Liverpool, Liverpool, UK
| | - A Mazur
- European Childhood Obesity Group (ECOG), Brussels, Belgium
- Department Pediatrics Pediatric Endocrinology and Diabetes, Medical College of Rzeszow University, Rzeszów, Poland
| | - M L Frelut
- European Childhood Obesity Group (ECOG), Brussels, Belgium
- Pediatric Practice, Albi, France
| | - A Forslund
- European Childhood Obesity Group (ECOG), Brussels, Belgium
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - E Vlachopapadopoulou
- European Childhood Obesity Group (ECOG), Brussels, Belgium
- Department of Endocrinology, Children's Hospital P. & A. Kyriakou, Athens, Greece
| | - É Erhardt
- European Childhood Obesity Group (ECOG), Brussels, Belgium
- Department of Paediatrics, University of Pécs, Pécs, Hungary
| | - A Vania
- European Childhood Obesity Group (ECOG), Brussels, Belgium
- Clinical Researcher, Sapienza University, Rome, Italy
| | - D Molnar
- European Childhood Obesity Group (ECOG), Brussels, Belgium
- Department of Paediatrics, University of Pécs, Pécs, Hungary
| | - S Ring-Dimitriou
- European Childhood Obesity Group (ECOG), Brussels, Belgium
- Department of Sport Science and Kinesiology, Paris Lodron-University, Salzburg, Austria
| | - M Caroli
- European Childhood Obesity Group (ECOG), Brussels, Belgium
- Paediatrician - Nutritionist, Brindisi, Italy
| | - V Mooney
- European Coalition for People Living with Obesity (ECPO), London, UK
| | | | | | - A Pulungan
- Intnerational Pediatric Association, Marengo, Illinois, USA
| | - J C Holms
- The Children's Obesity Clinic, European Centre of Obesity Management and The HOLBAEK Study, Department of Paediatrics, Holbaek University Hospital, Holbaek, Denmark
| | - G O'Malley
- School of Physiotherapy, Division of Population Health Sciences, RCSI University of Medicine and Health Sciences, Child and Adolescent Weight Management Service, Children's Health Ireland at Temple Street, Dublin, Ireland
| | - J L Baker
- Center for Clinical Research and Prevention, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - A M Jastreboff
- Department of Medicine (Endocrinology and Metabolism) and Department of Pediatrics (Pediatric Endocrinology), Yale University School of Medicine, New Haven, Connecticut, USA
| | - L Baur
- Specialty of Child and Adolescent Health, Sydney Medical School, The University of Sydney, World Obesity Federation, New South Wales, Australia
| | - D Thivel
- European Childhood Obesity Group (ECOG), Brussels, Belgium
- Laboratory of the Metabolic Adaptations to Exercise under Physiological and Pathological Conditions, Auvergne Regional Center for Human Nutrition, International Research Chair Health in Motion, Clermont University Auvergne Foundation, Clermont Auvergne University, Clermont-Ferrand, France
- Specialized Obesity Center Caloris, Clermont-Ferrand, France
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Lunati MP, Aspang JSU, Baker JL, Wilson JM, Moore TJ. Radiographic Prediction of Soft Tissue Injury Associated with Tibial Plateau Fractures: The Direction of Articular Depression Matters. J Surg Orthop Adv 2023; 32:270-275. [PMID: 38551237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
This investigation aimed to evaluate the impact of coronal articular fragment displacement of Schatzker type II tibial plateau fractures on concomitant soft tissue knee injuries. One hundred consecutively treated patients were included. Depression depth and coronal articular fragment displacement were measured radiographically, and medial collateral ligament (MCL) and lateral meniscus (LM) injury, and pain and range of motion (ROM) on final follow up, were recorded. Multivariable regression was then performed. Coronal articular fragment displacement was medially and laterally hinged in 74% and 26% of patients, respectively. MCL injuries were significantly higher in the lateral hinge group (odds ratio [OR]: 3.25; confidence interval [CI]: 1.07 to 9.84; p = 0.03). No difference was found in LM injury incidence and amount of articular depression between groups. At final follow-up, average pain and ROM was similar between groups. Findings demonstrate a significant correlation between laterally hinged articular depression in Schatzker II tibial plateau fractures and concomitant MCL injury. (Journal of Surgical Orthopaedic Advances 32(4):270-275, 2023).
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Affiliation(s)
- Matthew P Lunati
- Emory University School of Medicine, Department of Orthopaedics, Atlanta, Georgia
| | | | - J'Lynn L Baker
- Emory University School of Medicine, Department of Orthopaedics, Atlanta, Georgia
| | - Jacob M Wilson
- Emory University School of Medicine, Department of Orthopaedics, Atlanta, Georgia
| | - Thomas J Moore
- Emory University School of Medicine, Department of Orthopaedics, Atlanta, Georgia
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Holder CR, Schenker ML, Baker JL, Giordano NA. Defense and Veterans Pain Rating Scale scores associated with longer PROMIS measures. Reg Anesth Pain Med 2022:rapm-2022-104010. [PMID: 36517201 DOI: 10.1136/rapm-2022-104010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 11/29/2022] [Indexed: 12/15/2022]
Affiliation(s)
| | - Mara L Schenker
- Grady Memorial Hospital, Atlanta, Georgia, USA
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - J'Lynn L Baker
- Mercer University School of Medicine, Macon, Georgia, USA
| | - Nicholas A Giordano
- Emory University Nell Hodgson Woodruff School of Nursing, Atlanta, Georgia, USA
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Thomas PE, Aarestrup J, Jacobsen S, Jensen BW, Baker JL. Birthweight, body size, and growth during childhood and risks of rheumatoid arthritis: a large Danish cohort study. Scand J Rheumatol 2021; 51:461-469. [PMID: 34514936 DOI: 10.1080/03009742.2021.1954772] [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] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Objectives: Adult obesity may be positively associated with risks of rheumatoid arthritis (RA), but associations with early life body size are unknown. We examined whether birthweight, childhood body mass index (BMI), height, and changes in BMI and height were associated with risks of adult RA.Method: A cohort of 346 602 children (171 127 girls) from the Copenhagen School Health Records Register, born in 1930-1996, with measured weights and heights from 7 to 13 years of age, were included. Information on RA, including serological status, came from national registers from 1977 to 2017. Cox regressions were performed.Results: During a median of 35.1 years of observation time per person, 4991 individuals (3565 women) were registered with RA. Among girls, per BMI z-score, risks of RA and seropositive RA increased by 4-9% and 6-10%, respectively. Girls with overweight had higher risks of RA than girls without overweight. Girls who became overweight by 13 years of age had increased risks of RA compared to girls without overweight at 7 or 13 years (hazard ratio = 1.40, 95% confidence interval 1.19-1.66). For boys, associations between BMI and RA (including seropositive RA) were not statistically significant. Height was not associated with RA (any type) in girls. Taller boys had higher risks of RA, especially seropositive RA. Birthweight was not associated with RA.Conclusions: Among women, childhood adiposity was associated with increased risks of RA. Among men, childhood height was positively associated with risks of RA. These findings support the hypothesis that early life factors may be important in the aetiology of RA.
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Affiliation(s)
- P E Thomas
- Center for Clinical Research and Prevention, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark
| | - J Aarestrup
- Center for Clinical Research and Prevention, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark
| | - S Jacobsen
- Copenhagen Lupus and Vasculitis Clinic, Center for Rheumatology and Spine Diseases, Copenhagen, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - B W Jensen
- Center for Clinical Research and Prevention, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark
| | - J L Baker
- Center for Clinical Research and Prevention, Bispebjerg and Frederiksberg Hospital, Frederiksberg, Denmark
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Abstract
Early childhood caries (ECC) is a chronic disease affecting the oral health of children globally. This disease is multifactorial, but a primary factor is cariogenic microorganisms such as Streptococcus mutans. Biosynthetic gene clusters (BGCs) encode small molecules with diverse biological activities that influence the development of many microbial diseases, including caries. The purpose of this study was to identify BGCs in S. mutans from a high-caries risk study population using whole-genome sequencing and assess their association with ECC. Forty representative S. mutans isolates were selected for genome sequencing from a large-scale epidemiological study of oral microbiology and dental caries in children from a localized Alabama population. A total of 252 BGCs were identified using the antiSMASH BGC-mining tool. Three types of BGCs identified herein-butyrolactone-like, ladderane-like, and butyrolactone-ladderane-like hybrid (BL-BGC)-have not been reported in S. mutans. These 3 BGCs were cross-referenced against public transcriptomics data, and were found to be highly expressed in caries subjects. Furthermore, based on a polymerase chain reaction screening for core BL genes, 93% of children with BL-BGC had ECC. The role of BL-BGC was further investigated by examining cariogenic traits and strain fitness in a deletion mutant using in vitro biofilm models. Deletion of the BL-BGC significantly increased biofilm pH as compared to the parent strain, while other virulence and fitness properties remained unchanged. Intriguingly, BL-BGC containing strains produced more acid, a key cariogenic feature, and less biofilm than the model cariogenic strain S. mutans UA159, suggesting the importance of this BL-BGC in S. mutans-mediated cariogenesity. The structure of any BL-BGC derived metabolites, their functions, and mechanistic connection with acid production remain to be elucidated. Nevertheless, this study is the first to report the clinical significance of a BL-BGC in S. mutans. This study also highlights pangenomic diversity, which is likely to affect phenotype and virulence.
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Affiliation(s)
- S S Momeni
- Department of Pediatric Dentistry, University of Alabama at Birmingham, Birmingham, AL, USA
| | - S M Beno
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - J L Baker
- Genomic Medicine Group, J. Craig Venter Institute, La Jolla, CA, USA
| | - A Edlund
- Genomic Medicine Group, J. Craig Venter Institute, La Jolla, CA, USA
| | - T Ghazal
- Department of Preventive and Community Dentistry, University of Iowa, Iowa City, IA, USA
| | - N K Childers
- Department of Pediatric Dentistry, University of Alabama at Birmingham, Birmingham, AL, USA
| | - H Wu
- Department of Pediatric Dentistry, University of Alabama at Birmingham, Birmingham, AL, USA
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Abstract
Technological advancements have revolutionized our understanding of the complexity and importance of the human microbiome. This progress has also emphasized the need for precision therapeutics, as it has underscored the dilemmas, such as dysbiosis and increasing antibiotic resistance, associated with current, broad-spectrum treatment modalities. Dental caries remains the most common chronic disease worldwide, accompanied by a tremendous financial and social burden, despite widespread and efficacious fluoride and hygienic regimens. Over the past several decades, various precision approaches to combat dental caries, including vaccines, probiotics, and antimicrobial compounds, have been pursued. Despite the distinct overall conceptual strengths of each approach, for various reasons, there are currently no approved precision antibiotic therapeutics to prevent dental caries. Specifically targeted antimicrobial peptides (STAMPs) are synthetic molecules that combine the antibiotic moiety of a traditional antimicrobial peptide with a targeting domain to provide specificity against a particular organism. Conjoining the killing domain from the antimicrobial, novispirin G10, and a targeting domain derived from the Streptococcus mutans pheromone, CSP, the STAMP C16G2 was designed to provide targeted killing of S. mutans, widely considered the keystone species in dental caries pathogenesis. C16G2 was able to selectively eliminate S. mutans from complex ecosystems while leaving closely related, yet health-associated, oral species unharmed. This remodeling of the dental plaque community is expected to have significant advantages compared to conventional broad-spectrum mouthwashes, as the intact, surviving community is apt to prevent reinfection by pathogens. Following successful phase I clinical trials that evaluated the safety and basic microbiology of C16G2 treatments, the phase II trials of several C16G2 formulations are currently in progress. C16G2 represents an exciting advance in precision therapeutics, and the STAMP platform provides vast opportunities for both the development of additional therapeutics and the overall study of microbial ecology.
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Affiliation(s)
- J L Baker
- Genomic Medicine Group, J. Craig Venter Institute, La Jolla, CA, USA
| | - X He
- The Forsyth Institute, Cambridge, MA, USA
| | - W Shi
- The Forsyth Institute, Cambridge, MA, USA
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Baker JL, Di Meglio A, El Mouhebb M, Iyengar NM, Michiels S, Cottu P, Lerebours F, Coutant C, Lesur A, Tredan O, Soulie P, Vanlemmens L, Jouannaud C, Levy C, Everhard S, Martin AL, Arveux P, Fabrice A, Vaz Luis I, Jones LW. Abstract P1-15-03: Association between exercise, pathological complete response, and treatment tolerability in patients receiving neoadjuvant chemotherapy for operable breast cancer: Results from the CANTO study. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-15-03] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Randomized trials, although not all, suggest exercise therapy improves treatment completion rates / relative dose intensity in patients with early-stage breast cancer receiving adjuvant chemotherapy (CT). In addition, preclinical studies show that exercise therapy adds to the antitumor activity of standard CT in murine models of breast cancer. We evaluated the association between exercise and pathologic complete response (pCR) rate (i.e., ypT0ypN0) in patients receiving neoadjuvant CT for operable breast cancer.
Methods: Using a prospective design, patients with stage I-III breast cancer receiving anthracycline-taxane (± trastuzumab) neoadjuvant CT participating in a multicenter, national cohort study in France (CANTO, NCT01993498) completed questionnaire assessing self-reported exercise behavior (GPAQ 16). Multivariate logistic models were performed to determine the relationship between pre-CT exercise exposure (total MET-h/wk categorized into the proportion of patients meeting WHO exercise guidelines, the equivalent of ≥10 MET-h/wk), pCR rates, CT± trastuzumab dose reductions, delays, treatment completion or interruptions for the overall cohort and on the basis of clinical subtype.
Results: Between March, 2012 to December, 2014, a total of 989 patients participating in CANTO received neoadjuvant CT and completed GPAQ 16. Here we present interim analyses on 608 patients. Fifty-four percent of patients engaged on of ≥10 MET-h/wk prior to CT administration. In multivariable analysis for the overall cohort, exercise exposure was not associated with higher pCR (p=0.69). The pCR rate was 27.7% for patients reporting <10 MET h/wkcompared with 28.0% for those reporting ≥ 10 MET-h/wk (OR, 1.02; 95% CI, 0.71-1.45). Stratification analyses indicated no differences on the basis of clinical subtype for hormone receptor (HR) positive/HER2 negative (<10 MET h/wk: 15.1% vs. ≥ 10 MET h/wk: 16.5%; OR, 0.95, 0.41-2.16); HER2 positive (<10 MET h/wk: 38.1% vs. ≥ 10 MET h/wk: 32.5%; OR, 0.62, 0.28-1.35); or triple-negative disease (<10 MET h/wk: 33.3% vs. ≥ 10 MET h/wk: 36.7%; OR, 1.04, 0.52-2.10). Rates of CT dose reductions (<10 MET h/wk: 16.1% vs. ≥ 10 MET h/wk: 18.3%), CT dose delays (<10 MET h/wk: 19.9% vs. ≥ 10 MET h/wk: 19.8%), CT completion (<10 MET h/wk: 12.03% vs. ≥ 10 MET h/wk: 11.45%) trastuzumab interruptions (<10 MET h/wk: 9.01% vs. ≥ 10 MET h/wk: 7.95%) were also not different on the basis of exercise exposure.
Conclusion: On the basis of interim analyses, higher pretreatment exercise exposure is not associated with higher clinical response or treatment tolerability in breast cancer patients receiving uniform conventional neoadjuvant CT. Full results will be presented at the meeting.
Citation Format: Baker JL, Di Meglio A, El Mouhebb M, Iyengar NM, Michiels S, Cottu P, Lerebours F, Coutant C, Lesur A, Tredan O, Soulie P, Vanlemmens L, Jouannaud C, Levy C, Everhard S, Martin A-L, Arveux P, Fabrice A, Vaz Luis I, Jones LW. Association between exercise, pathological complete response, and treatment tolerability in patients receiving neoadjuvant chemotherapy for operable breast cancer: Results from the CANTO study [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-15-03.
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Affiliation(s)
- JL Baker
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - A Di Meglio
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - M El Mouhebb
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - NM Iyengar
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - S Michiels
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - P Cottu
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - F Lerebours
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - C Coutant
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - A Lesur
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - O Tredan
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - P Soulie
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - L Vanlemmens
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - C Jouannaud
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - C Levy
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - S Everhard
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - A-L Martin
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - P Arveux
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - A Fabrice
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - I Vaz Luis
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
| | - LW Jones
- Memorial Sloan Kettering Cancer Center, New York City, NY; Institut Gustave Roussy, Villejuif, France; Institut Curie, Paris, France; Institut Curie Saint Cloud, Saint Cloud, France; Centre Georges-Francois Leclerc, Dijon, France; Insitut de Cancerlogie de Lorraine, Nancy, France; Centre Leon Berard, Lyon, France; Centre Paul Papin, Angers, France; Centre Oscar Lambret, Lille, France; Institut de Cancérologie Jean Godinot, Reims, France; Centre François Baclesse, Caen, France; UNICANCER, Paris, France
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Awe TJ, Shelton KP, Sefkow AB, Lamppa DC, Baker JL, Rovang DC, Robertson GK. Development of a cryogenically cooled platform for the Magnetized Liner Inertial Fusion (MagLIF) Program. Rev Sci Instrum 2017; 88:093515. [PMID: 28964209 DOI: 10.1063/1.4986041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 09/05/2017] [Indexed: 06/07/2023]
Abstract
A cryogenically cooled hardware platform has been developed and commissioned on the Z Facility at Sandia National Laboratories in support of the Magnetized Liner Inertial Fusion (MagLIF) Program. MagLIF is a magneto-inertial fusion concept that employs a magnetically imploded metallic tube (liner) to compress and inertially confine premagnetized and preheated fusion fuel. The fuel is preheated using a ∼2 kJ laser that must pass through a ∼1.5-3.5-μm-thick polyimide "window" at the target's laser entrance hole (LEH). As the terawatt-class laser interacts with the dense window, laser plasma instabilities (LPIs) can develop, which reduce the preheat energy delivered to the fuel, initiate fuel contamination, and degrade target performance. Cryogenically cooled targets increase the parameter space accessible to MagLIF target designs by allowing nearly 10 times thinner windows to be used for any accessible gas density. Thinner LEH windows reduce the deleterious effects of difficult to model LPIs. The Z Facility's cryogenic infrastructure has been significantly altered to enable compatibility with the premagnetization and fuel preheat stages of MagLIF. The MagLIF cryostat brings the liquid helium coolant directly to the target via an electrically resistive conduit. This design maximizes cooling power while allowing rapid diffusion of the axial magnetic field supplied by external Helmholtz-like coils. A variety of techniques have been developed to mitigate the accumulation of ice from vacuum chamber contaminants on the cooled LEH window, as even a few hundred nanometers of ice would impact laser energy coupling to the fuel region. The MagLIF cryostat has demonstrated compatibility with the premagnetization and preheat stages of MagLIF and the ability to cool targets to liquid deuterium temperatures in approximately 5 min.
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Affiliation(s)
- T J Awe
- Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185, USA
| | - K P Shelton
- Kansas City National Security Campus, 14520 Botts Rd., Kansas City, Missouri 64147, USA
| | - A B Sefkow
- Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623, USA
| | - D C Lamppa
- Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185, USA
| | - J L Baker
- Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185, USA
| | - D C Rovang
- Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185, USA
| | - G K Robertson
- Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185, USA
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11
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Mollerup PM, Lausten-Thomsen U, Fonvig CE, Baker JL, Holm JC. Reductions in blood pressure during a community-based overweight and obesity treatment in children and adolescents with prehypertension and hypertension. J Hum Hypertens 2017; 31:640-646. [DOI: 10.1038/jhh.2017.36] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 03/02/2017] [Accepted: 03/27/2017] [Indexed: 11/09/2022]
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Baker JL, Faustoferri RC, Quivey RG. Acid-adaptive mechanisms of Streptococcus mutans-the more we know, the more we don't. Mol Oral Microbiol 2016; 32:107-117. [PMID: 27115703 DOI: 10.1111/omi.12162] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2016] [Indexed: 01/19/2023]
Affiliation(s)
- J L Baker
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - R C Faustoferri
- Center for Oral Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - R G Quivey
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.,Center for Oral Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
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13
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Aarestrup J, Gamborg M, Ulrich LG, Sørensen TIA, Baker JL. Childhood body mass index and height and risk of histologic subtypes of endometrial cancer. Int J Obes (Lond) 2016; 40:1096-102. [PMID: 27121254 PMCID: PMC4973214 DOI: 10.1038/ijo.2016.56] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 01/21/2016] [Accepted: 03/04/2016] [Indexed: 01/02/2023]
Abstract
Background: Endometrial cancer risk factors include adult obesity and taller stature, but the influence of size earlier in life is incompletely understood. We examined whether childhood body mass index (BMI; kg m−2) and height were associated with histologic subtypes of endometrial cancer. Methods: From the Copenhagen School Health Records Register, 155 505 girls born 1930–1989 with measured weights and heights from 7 to 13 years were linked to health registers. BMI and height were transformed to age-specific z-scores. Hazard ratios (HRs) and 95% confidence intervals were estimated by Cox regressions. Results: A total of 1020 endometrial cancers were recorded. BMI was non-linearly associated with all endometrial cancers, oestrogen-dependent cancers and the subtype of endometrioid adenocarcinomas; associations were statistically significant and positive above a z-score=0 and non-significant below zero. Compared with a 7-year-old girl with a BMI z-score=0, an equally tall girl who was 3.6 kg heavier (BMI z-score=1.5) had a hazard ratio=1.53 (95% confidence interval: 1.29–1.82) for endometrioid adenocarcinoma. BMI was not associated with non-oestrogen-dependent cancers, except at the oldest childhood ages. Height at all ages was statistically significant and positively associated with all endometrial cancers, except non-oestrogen-dependent cancers. At 7 years, per ~5.2 cm (1 z-score), the risk of endometrioid adenocarcinoma was 1.18 (95% confidence interval: 1.09–1.28). Among non-users of unopposed oestrogens, associations between BMI and endometrioid adenocarcinoma strengthened, but no effects on height associations were observed. Conclusions: Endometrial carcinogenesis is linked to early-life body size, suggesting that childhood BMI and height may be useful indicators for the risk of later development of endometrial cancer and might aid in the early prevention of obesity-related endometrial cancers.
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Affiliation(s)
- J Aarestrup
- Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospital, The Capital Region, Copenhagen, Denmark
| | - M Gamborg
- Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospital, The Capital Region, Copenhagen, Denmark
| | - L G Ulrich
- Copenhagen University Hospital Rigshospitalet, Department of Gynaecology and Obstetrics, Copenhagen, Denmark
| | - T I A Sørensen
- Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospital, The Capital Region, Copenhagen, Denmark.,Novo Nordisk Foundation Center for Basic Metabolic Research, Section on Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - J L Baker
- Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospital, The Capital Region, Copenhagen, Denmark.,Novo Nordisk Foundation Center for Basic Metabolic Research, Section on Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Baker JL, Abranches J, Faustoferri RC, Hubbard CJ, Lemos JA, Courtney MA, Quivey R. Transcriptional profile of glucose-shocked and acid-adapted strains of Streptococcus mutans. Mol Oral Microbiol 2015; 30:496-517. [PMID: 26042838 DOI: 10.1111/omi.12110] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/28/2015] [Indexed: 01/10/2023]
Abstract
The aciduricity of Streptococcus mutans is an important virulence factor of the organism, required to both out-compete commensal oral microorganisms and cause dental caries. In this study, we monitored transcriptional changes that occurred as a continuous culture of either an acid-tolerant strain (UA159) or an acid-sensitive strain (fabM::Erm) moved from steady-state growth at neutral pH, experienced glucose-shock and acidification of the culture, and transitioned to steady-state growth at low pH. Hence, the timing of elements of the acid tolerance response (ATR) could be observed and categorized as acute vs. adaptive ATR mechanisms. Modulation of branched chain amino acid biosynthesis, DNA/protein repair mechanisms, reactive oxygen species metabolizers and phosphoenolpyruvate:phosphotransferase systems occurred in the initial acute phase, immediately following glucose-shock, while upregulation of F1 F0 -ATPase did not occur until the adaptive phase, after steady-state growth had been re-established. In addition to the archetypal ATR pathways mentioned above, glucose-shock led to differential expression of genes suggesting a re-routing of resources away from the synthesis of fatty acids and proteins, and towards synthesis of purines, pyrimidines and amino acids. These adjustments were largely transient, as upon establishment of steady-state growth at acidic pH, transcripts returned to basal expression levels. During growth at steady-state pH 7, fabM::Erm had a transcriptional profile analogous to that of UA159 during glucose-shock, indicating that even during growth in rich media at neutral pH, the cells were stressed. These results, coupled with a recently established collection of deletion strains, provide a starting point for elucidation of the acid tolerance response in S. mutans.
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Affiliation(s)
- J L Baker
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - J Abranches
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.,Center for Oral Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - R C Faustoferri
- Center for Oral Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - C J Hubbard
- Center for Oral Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - J A Lemos
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.,Center for Oral Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - M A Courtney
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - R Quivey
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.,Center for Oral Biology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
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15
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Aarestrup J, Gamborg M, Cook MB, Baker JL. Childhood height increases the risk of prostate cancer mortality. Eur J Cancer 2015; 51:1340-5. [PMID: 25899985 DOI: 10.1016/j.ejca.2015.03.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 02/03/2015] [Revised: 03/20/2015] [Accepted: 03/26/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Adult body size is positively associated with aggressive and fatal prostate cancers. It is unknown whether these associations originate in early life. Therefore, we investigated if childhood height, body mass index (BMI; kg/m(2)) and growth are associated with prostate cancer-specific mortality and survival. METHODS Subjects were 125,208 men from the Copenhagen School Health Records Register, born 1930-1969 with height and weight measurements at ages 7-13years. Linkage to the Danish Cancer Registry and the Register of Causes of Death enabled identification of incident and fatal prostate cancers. Cox proportional hazards regressions were performed. RESULTS 630 men had prostate cancer recorded as the underlying cause of death. Childhood height at age 13years was positively associated with prostate cancer-specific mortality (hazard ratio [HR]per z-score=1.2, 95% confidence interval [CI]: 1.1-1.3). Associations were significant at all other childhood ages. Growth analyses showed that height at age 13years had a stronger association with prostate cancer-specific mortality than height at age 7, suggesting the association at age 7 is largely mediated through later childhood height. The tallest boys at age 13years had a significantly worse survival, but only when restricted to a diagnosis at <60years of age (HRz-score of 1=1.7, 95% CI: 1.3-2.4). These associations were significant at all other childhood ages. Childhood BMI was not associated with prostate cancer mortality or survival. CONCLUSION Childhood height was positively associated with the hard end-point of prostate cancer-specific mortality, which strengthens prior epidemiologic observations of a positive association with prostate cancer incidence.
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Affiliation(s)
- J Aarestrup
- Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospitals, The Capital Region, Nordre Fasanvej 57, 2000 Frederiksberg, Denmark.
| | - M Gamborg
- Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospitals, The Capital Region, Nordre Fasanvej 57, 2000 Frederiksberg, Denmark.
| | - M B Cook
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, 9609 Medical Center Drive, MSC 9774, Bethesda, MD 20892-9774, USA.
| | - J L Baker
- Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospitals, The Capital Region, Nordre Fasanvej 57, 2000 Frederiksberg, Denmark; Novo Nordisk Foundation Center for Basic Metabolic Research, Section on Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 1, 1. Floor, 2100 Copenhagen Ø, Denmark.
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Bjerregaard LG, Rasmussen KM, Michaelsen KF, Skytthe A, Mortensen EL, Baker JL, Sørensen TIA. Effects of body size and change in body size from infancy through childhood on body mass index in adulthood. Int J Obes (Lond) 2014; 38:1305-11. [PMID: 24942870 DOI: 10.1038/ijo.2014.108] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [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: 01/10/2014] [Revised: 05/19/2014] [Accepted: 06/10/2014] [Indexed: 11/09/2022]
Abstract
BACKGROUND Weight and weight gain throughout infancy are related to later obesity, but whether the strength of the associations varies during the infancy period is uncertain. AIMS Our aims were to identify the period of infancy when change in body weight has the strongest association with adult body mass index (BMI) and also the extent to which these associations during infancy are mediated through childhood BMI. METHODS The Copenhagen Perinatal Cohort, in which participants were followed from birth through 42 years of age, provided information on weight at 12 months and BMI at 42 years for 1633 individuals. Information on weight at birth, 2 weeks, 1, 2, 3, 4 and 6 months was retrieved from health visitors' records and information on BMI at ages 7 and 13 years from school health records. The associations of infant weight and weight gain standard deviation scores (SDS) with adult BMI-SDS were analyzed using multiple linear regression and path analysis. RESULTS Higher-weight-SDS at all ages from birth to an age 12 months were associated with higher-BMI-SDS at 42 years (regression coefficients 0.08-0.12). Infant weight gain-SDS was associated with greater BMI-SDS at 42 years only between birth and 3 months (0.09, 95% confidence intervals (CI) 0.04, 0.15) driven by an association between 2 and 3 months (0.12, 95% CI: 0.04, 0.20). The latter was partly mediated through later BMI in the path analysis. Infant weight gain-SDS between 3 and 12 months was not associated with greater BMI-SDS at 42 years. CONCLUSIONS Faster weight gain during only the first 3 months of infancy was associated with increased adult BMI, although not in a consistent monthly pattern. Adult BMI is more sensitive to high weight gain during early infancy than late infancy, but not specifically to the first month of life.
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Affiliation(s)
- L G Bjerregaard
- Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
| | - K M Rasmussen
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA
| | - K F Michaelsen
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - A Skytthe
- Institute of Public Health, University of Southern Denmark, Odense, Denmark
| | - E L Mortensen
- 1] Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark [2] Institute of Public Health and Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark
| | - J L Baker
- 1] Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark [2] Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - T I A Sørensen
- 1] Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark [2] Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Aarestrup J, Gamborg M, Cook MB, Sørensen TIA, Baker JL. Childhood body mass index and the risk of prostate cancer in adult men. Br J Cancer 2014; 111:207-12. [PMID: 24867696 PMCID: PMC4090733 DOI: 10.1038/bjc.2014.266] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [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] [Received: 01/31/2014] [Revised: 04/09/2014] [Accepted: 04/24/2014] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Prostate cancer aetiology is poorly understood. It may have origins early in life; previously we found a positive association with childhood height. The effects of early life body mass index (BMI; kg m(-2)) on prostate cancer remain equivocal. We investigated if childhood BMI, independently and adjusted for height, is positively associated with adult prostate cancer. METHODS Subjects were a cohort of 125208 boys formed from the Copenhagen School Health Records Register, born 1930-1969 with height and weight measurements at 7-13 years. Cases were identified through linkage to the Danish Cancer Registry. Cox proportional hazards regressions were performed. RESULTS Overall, 3355 men were diagnosed with prostate cancer. Body mass index during childhood was positively associated with adult prostate cancer. The hazard ratio of prostate cancer was 1.06 (95% confidence interval (CI): 1.01-1.10) per BMI z-score at age 7, and 1.05 (95% CI: 1.01-1.10) per BMI z-score at age 13. Estimates were similar and significant at all other ages. However, adjustment for childhood height attenuated the associations at all but the youngest ages as most estimates became nonsignificant. CONCLUSIONS These results suggest that at most childhood ages, BMI does not confer an additional risk for prostate cancer beyond that of height.
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Affiliation(s)
- J Aarestrup
- Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospital, The Capital Region, Nordre Fasanvej 5, Frederiksberg, 2000 Copenhagen, Denmark
| | - M Gamborg
- Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospital, The Capital Region, Nordre Fasanvej 5, Frederiksberg, 2000 Copenhagen, Denmark
| | - M B Cook
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, 9609 Medical Center Drive, Room 7-E106, MSC 9774, Bethesda, MD 20892-9774, USA
| | - T I A Sørensen
- 1] Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospital, The Capital Region, Nordre Fasanvej 5, Frederiksberg, 2000 Copenhagen, Denmark [2] Novo Nordisk Foundation Center for Basic Metabolic Research, Section on Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen 1, 1. Floor, 2100 Copenhagen, Denmark
| | - J L Baker
- 1] Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospital, The Capital Region, Nordre Fasanvej 5, Frederiksberg, 2000 Copenhagen, Denmark [2] Novo Nordisk Foundation Center for Basic Metabolic Research, Section on Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen 1, 1. Floor, 2100 Copenhagen, Denmark
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Andersen LG, Holst C, Michaelsen KF, Baker JL, Sørensen TIA. Weight and weight gain during early infancy predict childhood obesity: a case-cohort study. Int J Obes (Lond) 2012; 36:1306-11. [PMID: 22907690 DOI: 10.1038/ijo.2012.134] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [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: 12/17/2022]
Abstract
BACKGROUND Infant weight and weight gain are positively associated with later obesity, but whether there is a particular critical time during infancy remains uncertain. OBJECTIVE The aim was to investigate when and how weight and weight gain during infancy become associated with childhood obesity. METHODS In a cohort representing 28 340 children born from 1959-67 and measured in Copenhagen schools, 962 obese children (2007 World Health Organization criteria), were compared with a 5% randomly selected sub-cohort of 1417 children. Information on weight at birth, 2 weeks, 1, 2, 3, 4, 6 and 9 months was retrieved from health visitors' records. Odds ratios and 95% confidence intervals (CI) for childhood obesity by tertiles of weight at each age and by change in tertiles of weight between two consecutive measurements were estimated using multivariate logistic regression with adjustment for indicators of socioeconomic status, preterm birth, and breastfeeding. RESULTS Compared with children in the middle weight-tertile, children with a weight in the upper tertile had a 1.36-fold (CI, 1.10-1.69) to 1.72-fold (CI, 1.36-2.18) higher risk of childhood obesity from birth through 9 months, whereas children in the lower weight-tertile had almost half the risk of obesity from 2 through 9 months. The risk of childhood obesity associated with change in weight-tertile in each interval was stable at ∼1.5-fold per weight-tertile increase throughout infancy. CONCLUSIONS Infant weight and weight gain are associated with obesity in childhood already during the first months of life. Determinants of weight gain shortly after birth may be a suitable target for prevention of obesity.
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Affiliation(s)
- L G Andersen
- Institute of Preventive Medicine, Copenhagen University Hospital, Copenhagen, Denmark.
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Abstract
The purpose was to investigate a possible levelling off in the obesity epidemic, by systematically reviewing literature and web-based sources. Eligible studies and data sources were required to have at least two measures of obesity prevalence since 1999. A literature and Internet search resulted in 52 studies from 25 different countries. The findings supported an overall levelling off of the epidemic in children and adolescents from Australia, Europe, Japan and the USA. In adults, stability was found in the USA, while increases were still observed in some European and Asian countries. Some evidence for heterogeneity in the obesity trends across socioeconomic status (SES) groups was found. The levelling off was less evident in the lower-SES groups. No obvious differences between genders were identified. We discussed potential explanations for a levelling off and the utility of investigating obesity trends to identify the driving forces behind the epidemic. It is important to emphasize that the levelling off is not tantamount to calling off the epidemic. Additionally, it is worthwhile to keep in mind that previous stable phases have been followed by further increases in the prevalence of obesity. Therefore, research into the causes, prevention and treatment of obesity should remain a priority.
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Affiliation(s)
- B Rokholm
- Institute of Preventive Medicine, Copenhagen University Hospital, Denmark.
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20
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Lee SE, Park BS, Bayman P, Baker JL, Choi WS, Campbell BC. Suppression of ochratoxin biosynthesis by naturally occurring alkaloids. Food Addit Contam 2007; 24:391-7. [PMID: 17454112 DOI: 10.1080/02652030601053147] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The effects of four alkaloids on the biosynthesis of ochratoxin A (OTA), ochratoxin B (OTB) and citrinin were examined on four OTA-producing aspergilli: Aspergillus auricomus, A. sclerotiorum and two isolates of A. alliaceus. Piperine and piperlongumine, natural alkaloids of Piper longum, significantly inhibited OTA production at 0.001% (w/v) for all aspergilli examined. Piperine and piperlongumine affected the polyketide synthesis step of OTA production and inhibited production of citrinin. Curcumin, a constituent of tumeric, completely inhibited mycelial growth of A. alliaceus isolate 791 at 0.1% (w/v) and decreased OTA production by approximately 70% at 0.01% (w/v). Sesamin, a constituent of sesame oil, inhibited OTA and OTB production by 60 and 45%, respectively, at 0.1% (w/v), showing its effect was on chloroperoxidase and polyketide synthase activity. The potential advantage of these natural products to reduce ochratoxin contamination of agricultural commodities is discussed.
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Affiliation(s)
- S E Lee
- Research Station, Nanotoxtech Co. Ltd., Bundang, Sungnam, South Korea.
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Allen BL, Mallarino AP, Klatt JG, Baker JL, Camara M. Soil and surface runoff phosphorus relationships for five typical USA midwest soils. J Environ Qual 2006; 35:599-610. [PMID: 16510705 DOI: 10.2134/jeq2005.0135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Excessively high soil P can increase P loss with surface runoff. This study used indoor rainfall simulations to characterize soil and runoff P relationships for five Midwest soils (Argiudoll, Calciaquaoll, Hapludalf, and two Hapludolls). Topsoil (15-cm depth, 241-289 g clay kg(-1) and pH 6.0-8.0) was incubated with five NH4H2PO4 rates (0-600 mg P kg(-1)) for 30 d. Total soil P (TPS) and soil-test P (STP) measured with Bray-P1 (BP), Mehlich-3 (M3P), Olsen (OP), Fe-oxide-impregnated paper (FeP), and water (WP) tests were 370 to 1360, 3 to 530, 10 to 675, 4 to 640, 7 to 507, and 2 to 568 mg P kg(-1), respectively. Degree of soil P saturation (DPS) was estimated by indices based on P sorption index (PSI) and STP (DPSSTP) and P, Fe, and Al extracted by ammonium oxalate (DPSox) or Mehlich-3 (DPSM3). Soil was packed to 1.1 g cm(-3) bulk density in triplicate boxes set at 4% slope. Surface runoff was collected during 75 min of 6.5 cm h(-1) rain. Runoff bioavailable P (BAP) and dissolved reactive P (DRP) increased linearly with increased P rate, STP, DPSox, and DPSM3 but curvilinearly with DPSSTP. Correlations between DRP or BAP and soil tests or saturation indices across soils were greatest (r > or = 0.95) for FeP, OP, and WP and poorest for BP and TPS (r = 0.83-0.88). Excluding the calcareous soil (Calciaquoll) significantly improved correlations only for BP. Differences in relationships between runoff P and the soil tests were small or nonexistent among the noncalcareous soils. Routine soil P tests can estimate relationships between runoff P concentration and P application or soil P, although estimates would be improved by separate calibrations for calcareous and noncalcareous soils.
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Affiliation(s)
- B L Allen
- Department of Agronomy, Iowa State University, Ames, IA 50011, USA
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Affiliation(s)
- J L Baker
- Department of Paediatric Surgery, Alder Hey Children's Hospital and The University of Liverpool, UK
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Baker JL. Limitations of improved nitrogen management to reduce nitrate leaching and increase use efficiency. ScientificWorldJournal 2001; 1 Suppl 2:10-6. [PMID: 12805733 PMCID: PMC6084006 DOI: 10.1100/tsw.2001.457] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [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: 08/13/2001] [Revised: 11/15/2001] [Accepted: 11/15/2001] [Indexed: 11/17/2022] Open
Abstract
The primary mode of nitrogen (N) loss from tile-drained row-cropped land is generally nitrate-nitrogen (NO3-N) leaching. Although cropping, tillage, and N management practices can be altered to reduce the amount of leaching, there are limits as to how much can be done. Data are given to illustrate the potential reductions for individual practices such as rate, method, and timing of N applications. However, most effects are multiplicative and not additive; thus it is probably not realistic to hope to get overall reductions greater than 25 to 30% with in-field practices alone. If this level of reduction is insufficient to meet water quality goals, additional off-site landscape modifications may be necessary.
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Affiliation(s)
- J L Baker
- Department of Agriculture and Biosystems Engineering, Iowa State University, Ames, USA.
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Abstract
BACKGROUND Studies relating to the ethnic origin of patients with an abdominal aortic aneurysm (AAA) are few and are mainly concerned with the differences between black and white Americans. The purpose of this study was to determine whether the incidence of AAA among the Asian population of Bradford is different from that in the Caucasian population. METHODS A retrospective study of patients with an AAA was carried out between 1990 and 1997 using data collected by the Patient Administrative Service, personal databases of the vascular consultants and theatre records. Information about the ethnic composition of the population of Bradford was obtained from the 1991 national census. Demographic data, including ethnic origin and clinical details, were obtained from patient notes. RESULTS Two hundred and thirty-three patients with an AAA were identified during the study interval. The Asian population comprised 14.0 per cent of the total population of Bradford. Twenty-eight AAAs would be expected per year. All of the aneurysms identified occurred in the Caucasian population and none in the Asian community. CONCLUSION These early results suggest that AAA is rare among the Asian population.
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Affiliation(s)
- J I Spark
- Department of Vascular Surgery, Bradford Royal Infirmary, Bradford, UK.
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27
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Abstract
Clinically apparent hypoglycemia is rare in adult horses. Hypoglycemia is a well-recognized paraneoplastic syndrome in humans and dogs with non-insulin-secreting tumors and may occur in horses as well. Hypoglycemia associated with non-insulin-secreting tumors is believed to result from production of an abnormal form of insulin-like growth factor II. Neoplasia should be considered in the differential diagnosis for adult horses with hypoglycemia.
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Affiliation(s)
- J L Baker
- School of Veterinary Medicine, University of California, Davis 95616, USA
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28
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Singh S, Baker JL. Use of expanded polytetrafluoroethylene in aesthetic surgery of the face. Clin Plast Surg 2000; 27:579-93. [PMID: 11039891] [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: 02/18/2023]
Abstract
Aesthetic surgery procedures and materials available to improve the appearance of various subunits of the face have been evolving for the past several decades. Initially, techniques such as direct excision or placement of autogenous tissue grafts (e.g., fat, fascia, tendon, and dermal fat grafts) were used. Additional options became available with the development of silicone, injectable collagen, and ePTFE. These options for facial augmentation can be done rapidly in an office setting and as an outpatient. An important aspect of treatment is discussing clearly all pertinent options with the patient, and recommending the appropriate option based on the patient's anatomic findings and personal needs. For example, patients desiring lip augmentation but unsure about the result may be best treated with collagen injection, which gives temporary results and lets the patient consider a long-term result provided by ePTFE or autogenous grafts. Use of ePTFE in facial aesthetic surgery gradually has increased over the past two decades. Its use in augmentation of lips, nasolabial creases, and nose is becoming an important treatment modality for aesthetic surgeons.
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Affiliation(s)
- S Singh
- Division of Plastic Surgery, University of South Florida, Tampa, USA
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29
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Abstract
The phenolic compounds acetosyringone, syringaldehyde and sinapinic acid inhibited the biosynthesis of aflatoxin B1 (AFB1) by A. flavus. Acetosyringone was the most active among the three compounds, inhibiting aflatoxin level by 82% at 2 m moll-1. The synthesis and accumulation of norsolorinic acid, an aflatoxin biosynthetic intermediate, was also inhibited. These results suggest that at least one step early in the AFB1 biosynthetic pathway is inhibited by the phenolics.
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Affiliation(s)
- S S Hua
- U.S. Department of Agriculture, Western Regional Research Center, Albany, C.A. 94710, USA
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30
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Baker JL. A practical guide to ultrasound-assisted lipoplasty. Clin Plast Surg 1999; 26:363-8, vii. [PMID: 10549436] [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: 02/14/2023]
Abstract
This article provides practical guidelines for plastic surgeons to incorporate ultrasound-assisted lipoplasty into their practice. Tips for improved results are provided and methods to avoid complications are discussed. The author also weighs the advantages and disadvantages of ultrasound-assisted lipoplasty and suction-assisted lipoplasty.
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Affiliation(s)
- J L Baker
- Department of Plastic Surgery, University of South Florida, Tampa, USA
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31
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Abstract
The nor mutant of Aspergillus flavus has a defective norsolorinic acid reductase, and thus the aflatoxin biosynthetic pathway is blocked, resulting in the accumulation of norsolorinic acid, a bright red-orange pigment. We developed a visual agar plate assay to monitor yeast strains for their ability to inhibit aflatoxin production by visually scoring the accumulation of this pigment of the nor mutant. We identified yeast strains that reduced the red-orange pigment accumulation in the nor mutant. These yeasts also reduced aflatoxin accumulation by a toxigenic strain of A. flavus. These yeasts may be useful for reducing aflatoxin contamination of food commodities.
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Affiliation(s)
- S S Hua
- Western Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, Albany, California 94710, USA.
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32
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Spear SL, Baker JL. Classification of capsular contracture after prosthetic breast reconstruction. Plast Reconstr Surg 1995; 96:1119-23; discussion 1124. [PMID: 7568488] [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: 01/26/2023]
Abstract
The Baker classification of capsular contracture remains the most popular and practical method of assessing clinical firmness of the breast after augmentation mammaplasty. This classification system was never intended to describe prosthetic breast reconstruction. A modification of the Baker classification to include classes IA, IB, II, III, and IV has been developed to describe breast reconstruction more accurately. For this modified system, a soft but visible implant (class IB), an implant with mild firmness (class II), and an implant with moderate firmness (class III) could still be considered good or excellent outcomes. Only a class IV classification with an excessively firm and symptomatic breast resulting in a poor aesthetic result would necessarily be considered a poor outcome.
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Affiliation(s)
- S L Spear
- Georgetown University Hospital, Washington, D.C., USA
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33
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Abstract
Fatigue is the subjective report of a sustained sense of exhaustion with reduced motivation and capacity for physical and/or mental activity. Although factors associated with fatigue have been explored in specific patient populations, minimal study has been devoted to exploring both the magnitude of fatigue and associated variables among women generally thought to be well. This cross-sectional, descriptive study examined the relationship of behavioral, socio-demographic, and emotional factors to subjective ratings of fatigue among women in the community who perceived themselves as being fatigued but otherwise healthy. A convenience sample of 155 adult women completed the Piper Fatigue Self-Report Scale (PFS), the Beck Depression Inventory (BDI), and an investigator-designed questionnaire that collected behavioral and socio-demographic data. Correlation and regression analyses were used with fatigue as measured by the PFS as the outcome variable. Statistically significant relationships were noted between PFS and BDI scores as well as PFS and sleep pattern, rest quality, and perceived stress. Construction of a multiple regression model revealed an adjusted R2 of .43 with the BDI score serving as the major predictor variable for fatigue. Persistent fatigue is a consistent element in the lives of many women. As such it can significantly undermine women's quality of life.
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Affiliation(s)
- K Libbus
- Nursing School, University of Missouri, Columbia 65211, USA
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Musemeche CA, Baker JL, Feddersen RM. A model of intestinal ischemia in the neonatal rat utilizing superior mesenteric artery occlusion and intraluminal platelet-activating factor. J Surg Res 1995; 58:724-7. [PMID: 7791352 DOI: 10.1006/jsre.1995.1114] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The human premature newborn is susceptible to necrotizing enterocolitis (NEC) in the first 1 to 3 weeks of life, a time when the gastrointestinal tract is structurally and functionally premature. Studies of NEC are hampered by the lack of a standard, reproducible model in newborn animals. The purpose of this study was to produce a model for intestinal ischemic injury in newborn rats. On Days 14, 18, 22, and 26 of life, newborn rats (10/day) were subjected to 1 hr of superior mesenteric artery occlusion with a microaneurysm clip. Platelet activating factor (PAF, 50 micrograms/kg) was injected into the lumen of the proximal small intestine after occlusion was initiated. Control animals (10/day) underwent sham laparotomy on Days 14, 18, 22, and 26. Animals were autopsied upon demise (7.6 +/- 0.7 hr) or at 24 hr. The intestine was inspected for gross ischemic changes and samples were taken for histology and myeloperoxidase (MPO, an index of neutrophil infiltration). Ischemic injury was graded in a blinded fashion, by a pathologist, using a scale from 0 to 4 (0, no injury; 4, full-thickness necrosis). All animals in the experimental groups had evidence of histologic injury (mean +/- SEM) on Days 14 (1.0 +/- 0.0), 18 (2.5 +/- 0.5), 22 (3.6 +/- 0.3), and 26 (3.1 +/- 0.5). The sham-operated control animals had no injury (P < 0.0001). MPO levels (U/g protein) on Days 18 (27.2 +/- 1.7 vs 13.9 +/- 2.3), 22 (40.9 +/- 5.4 vs 7.6 +/- 0.8), and 26 (29.3 +/- 4.4 vs 7.6 +/- 1.0) were significantly higher in experimental groups vs controls (P < 0.001).(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- C A Musemeche
- Department of Surgery, University of New Mexico Health Sciences Center, Albuquerque 87131, USA
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35
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Abstract
When traumatic abdominal injury and acute appendicitis occur within a short period of time, the diagnosis can be difficult and may result in a delay in treatment of the appendicitis. We report the case of a four-year-old boy with documented intraabdominal injury from a motor vehicle crash who developed appendicitis while hospitalized and recovering from his injuries.
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Affiliation(s)
- C A Musemeche
- Department of Surgery, University of New Mexico School of Medicine, Albuquerque 87131, USA
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Wells KE, Cruse CW, Baker JL, Daniels SM, Stern RA, Newman C, Seleznick MJ, Vasey FB, Brozena S, Albers SE. The health status of women following cosmetic surgery. Plast Reconstr Surg 1994; 93:907-12. [PMID: 8134482 DOI: 10.1097/00006534-199404001-00002] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A retrospective study was performed to determine the frequency of new symptoms and diseases after silicone breast implantation. Questionnaires were mailed to 826 women who made up a breast implant group (n = 516) and a control group who had undergone blepharoplasty (n = 124), liposuction (n = 111), or rhinoplasty (n = 75). Responses were obtained from 370 women (45 percent); however, 68 of these patients (18 percent) were considered ineligible. The overall response rate was 59 percent for the breast implant group and 46 percent for controls. The 302 eligible women included patients with silicone breast implants (n = 222) and controls (n = 80). Women with implants were significantly younger than controls, the median age of women with breast implants being 37 years compared with 46.5 years for controls (p < 0.0001). We compared the incidence of 23 symptoms and 4 connective-tissue diseases after cosmetic surgery in the two groups. The symptoms of swollen glands under arms (p < 0.05) and tender glands under arms (p < 0.01) were statistically more frequent in the breast implant group. The symptom change in skin color was more common in the controls (p < 0.001). The Bonferroni correction for multiple (27) endpoints adjusts the 5 and 1 percent significance cutoff points to 0.00185 and 0.00037, respectively, leaving only change of skin color significant at the 5 percent level on the adjusted data. No cases of scleroderma or lupus were found, and the incidence of arthritis was not significantly different between the implant and control groups.
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Affiliation(s)
- K E Wells
- Department of Surgery, University of South Florida College of Medicine, Tampa
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Baker JL, Gosland MP, Herrington JD, Record KE. Cytomegalovirus colitis after 5-fluorouracil and interferon-alpha therapy. Pharmacotherapy 1994; 14:246-9. [PMID: 8197048] [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: 01/29/2023]
Abstract
Cytomegalovirus (CMV) infection is an opportunistic viral infection primarily affecting immunocompromised patients. Patients with inflammatory bowel disease have an increased risk for developing CMV infections of the gastrointestinal tract. While receiving continuous infusion of 5-fluorouracil and interferon-alpha, a 72-year-old woman with stage IV pancreatic carcinoma developed severe colitis with diarrhea that was refractory to conventional antidiarrheals. A biopsy specimen from the colon revealed CMV inclusions, which were confirmed by immunofluorescence. The patient was given ganciclovir 210 mg (5 mg/kg) every 12 hours for 14 days, and the diarrhea resolved after approximately 8 days of therapy. This is the first reported case of CMV colitis associated with combination 5-fluorouracil and interferon-alpha therapy.
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Affiliation(s)
- J L Baker
- Department of Pharmacy, Lucille P. Markey Cancer Center, Lexington, Kentucky
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Abstract
Recent evidence has suggested that the immaturity of the neonatal intestine may play a key role in the development of ischemic injury. However, relatively little data exist on the susceptibility of the neonatal intestine to ischemic injury at various ages especially in the fed versus fasted states. In this study, the levels of xanthine oxidase ([XO] an enzyme which is a known, major source of free radicals in postischemic tissue) and myeloperoxidase ([MPO] an index of tissue neutrophil infiltration) were measured in 1-, 5-, 10-, 15-, and 20-day-old Sprague-Dawley rats. Rats were divided into fed (n = 8/day) and fasted (n = 8/day) groups 4 hours prior to sacrifice. The entire small intestine was removed and divided into five segments: the duodenum, proximal jejunum, distal jejunum, proximal ileum, and distal ileum. The specimens were homogenized and assayed for XO and MPO levels. A significant increase in XO was observed in the fasted animals compared to the fed animals on all days. Peak levels in XO were observed in both groups from day 5 to 10. MPO levels were significantly higher in the fasted versus fed animals on day 1. MPO levels decreased as the animals aged. These data demonstrate dramatic differences in the levels of inflammatory enzymes of the newborn rat in the fed versus fasted states. Also, marked variations with age are seen in both XO and MPO. Whether the XO and MPO levels present at the time of ischemic insult affect severity of injury remains to be seen.
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Affiliation(s)
- C A Musemeche
- Department of Surgery, University of Texas Medical School, Baylor College of Medicine, Houston
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39
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Abstract
Amplitude and time course of spontaneous gamma-aminobutyric acid (GABA)-mediated miniature postsynaptic currents (MPSCs), recorded in cultured embryonic hippocampal neurons in presence of either tetrodotoxin (TTX) or increased external [Mg2+/Ca2+] ratio, revealed that they form two classes. The distribution of the most commonly recorded MPSCs was skewed both in terms of peak amplitude and rise-time (skew-MPSCs, mode: 70-120 pS). Another, less frequent class (mode: 1-3 nS) formed bell-shaped (bell-MPSCs) amplitude and rise-time distributions. MPSC initial slope did not correlate with rise time, indicating that smaller MPSCs were not electrotonically attenuated. Bell-MPSCs did not result from the integration of skew-MPSCs and both classes appeared to be composed of subunits.
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Affiliation(s)
- J Vautrin
- Laboratory of Neurophysiology, National Institute of Neurological and Communicative Disorders and Stroke, National Institute of Health, Bethesda, MD 20892
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40
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Abstract
The effect of milk type on physiological, gastroesophageal reflux (GER) was studied in 37 breast-fed and 37 formula-fed, healthy, term neonates aged 2-8 days. The neonates were randomly selected from the public maternity ward and studied for 4 h after their morning milk feed. GER was recorded by a pH microelectrode placed 6 cm above the gastroesophageal junction and analyzed in the third and fourth postprandial hours. Sleep state was accurately defined from the electroencephalogram, electrooculogram, electromyogram, breathing, and behavioral observations. Movement was recorded from a piezo-electric transducer. In active sleep, the breast-fed neonates demonstrated GER episodes of significantly shorter duration than the formula-fed neonates. The means and 95% confidence intervals (CI) were 3.0 (1.6,5.2) compared with 8.3 (5.0,13.3) min/h of active sleep respectively (p less than 0.05). This could not be explained by greater milk volume or increased movement before or during reflux in formula-fed neonates. However, the lower median pH values for GER in breast-fed neonates, 2.0 versus 2.5, were significantly different (p less than 0.05). This difference may reflect more rapid gastric emptying. The lower esophageal pH is more likely to stimulate peristalsis and thus limit the duration of reflux (shorter episodes), in the breast-fed neonates.
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Affiliation(s)
- H J Heacock
- Department of Perinatal and Fetal Medicine, King George V Hospital for Mothers and Infants, Camperdown, Australia
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41
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Baker JL. Retinal capillary hemangioma. J Am Optom Assoc 1991; 62:776-9. [PMID: 1813504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Capillary hemangiomas of the retina, which commonly occur as part of von Hippel's disease, are classically composed of a retinal capillary tumor, a large feeder arteriole, and a draining venule. The fundamental pathology is a hamartomatous lesion. In this paper, the case of an early, incipient lesion will be presented. Since approximately 25 percent of patients with angiomatosis retinae develop the life-threatening von Hippel-Lindau disease, the eye care practitioner needs to be aware of this condition. Also included in the discussion are the treatment options available for these retinal abnormalities.
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Affiliation(s)
- J L Baker
- Illinois Eye Institute, Chicago 60616
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Schweich PJ, Fosarelli PD, Duggan AK, Quinn TC, Baker JL. Prevalence of human immunodeficiency virus seropositivity in pediatric emergency room patients undergoing phlebotomy. Pediatrics 1990; 86:660-5. [PMID: 2235218] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Information on the prevalence of human immunodeficiency virus (HIV) infection among children and adolescents requiring medical care is sparse. A small but significant risk of seroconversion occurs in health care workers who handle blood and body fluids of patients infected with HIV. The prevalence of HIV seropositivity in children who had phlebotomy as part of emergency care was measured. Of 749 blood samples, 21 (2.8%) tested positive for HIV antibody by enzyme-linked immunosorbent assay and Western Blot analysis: 14 samples from 6 patients with hemophilia, 6 from 3 patients with acquired immunodeficiency syndrome/acquired immunodeficiency syndrome-related complex, and 1 from a patient with asthma. Of these 21 blood samples, 10 were from 4 children previously known to be HIV positive, 4 were from patients with a known parental risk factor, and 16 were from patients with known history of blood transfusion. One sample was from a children with unknown HIV status and no documented risk factors. Procedures included 9 venipunctures, 17 intravenous line placements, 1 lumbar puncture, and 1 pelvic examination. Most patients with HIV seropositivity had been known to be HIV seropositive or at significant risk for HIV seropositivity. Although the potential risk to health care workers from children without known risk factors for HIV seropositivity was small in this population, the currently recommended infection-control precautions should always be observed.
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Affiliation(s)
- P J Schweich
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Abstract
Chemical losses with water and sediment are a product of the mass of carrier and chemical concentration in that carrier. One approach to controlling losses is to utilize chemical management practices that reduce the chemical concentrations in the water and sediment that leave a treated field; another is to control the masses of the carriers. In this paper, emphasis will be placed on the former, with a discussion of rate, timing, placement, and choice-of-chemical options available for the application of fertilizers and pesticides and their effect on offsite losses with surface and subsurface drainage. Particular emphasis will be on the known effects of application variables on nitrate-nitrogen (NO3-N) leaching and on herbicide losses in both surface runoff water and sediment and with percolation water. Current understanding of chemical transport processes will be used to extrapolate to situations in which actual data are not available. Areas of research to fill these data gaps and to improve our understanding of the effects of current management practices on losses and also to develop new chemical management practices to increase further the efficiency of use and reduce losses will be addressed. The usefulness of standards, or some form of health advisory levels, as goals for levels of control necessary will also be noted.
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Affiliation(s)
- J L Baker
- Department of Agricultural Engineering, Iowa State University, Ames 50011
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Kelen GD, Fritz S, Qaquish B, Floccare D, DiGiovanna T, Baker JL, Sivertson KT, Quinn TC. Substantial increase in human immunodeficiency virus (HIV-1) infection in critically ill emergency patients: 1986 and 1987 compared. Ann Emerg Med 1989; 18:378-82. [PMID: 2705669 DOI: 10.1016/s0196-0644(89)80574-8] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In a follow-up study conducted one year after a previous report, we found that 7.8% of 126 patients with critical illness or injury were infected with the human immunodeficiency virus (HIV-1) in 1987 as compared with 3.0% of 203 similar patients in 1986. In the earlier study all patients with infection (six) were confined to a narrow age range (25 to 34 years old) and were trauma presentations. However, in the follow-up study, infections were found in all age groups under 45 years of age (nine) as well as in 3.4% of patients with nontrauma presentations. Infection rates among patients between the ages of 25 and 34 presenting with penetrating trauma remained over 18% during both study periods. While emergency health care providers may have inadvertently interpreted the results of the first study as indicating that the need for infection control precautions could be restricted to young victims of trauma, the follow-up study clearly indicates that appropriate protective measures must be taken on all patients requiring resuscitative measures regardless of age or clinical presentation, particularly in emergency facilities within similar locations.
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Affiliation(s)
- G D Kelen
- Division of Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205
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45
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Abstract
The risk to health care providers of acquiring human immunodeficiency virus (HIV) infection through occupational exposure is very low, but the consequences of becoming infected are obviously severe. The magnitude of this risk has been debated extensively in the medical literature, but the majority of these discussions have focused on providers of surgical, orthopedic, and obstetric care, none of whom have ever been documented to have become infected with HIV through occupational exposure. In contrast, there has been very little information published regarding the degree of risk to emergency care providers, several of whom have been confirmed as having acquired HIV infection through occupational exposures. This report addresses the extent and nature of risk of HIV infection to emergency care providers and reviews the current management of significant exposures.
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Affiliation(s)
- J L Baker
- Department of Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Kelen GD, Fritz S, Qaqish B, Brookmeyer R, Baker JL, Kline RL, Cuddy RM, Goessel TK, Floccare D, Williams KA. Unrecognized human immunodeficiency virus infection in emergency department patients. N Engl J Med 1988; 318:1645-50. [PMID: 3163774 DOI: 10.1056/nejm198806233182503] [Citation(s) in RCA: 221] [Impact Index Per Article: 6.1] [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: 01/04/2023]
Abstract
To determine the extent of unrecognized human immunodeficiency virus (HIV) infection, we examined blood samples drawn from patients presenting to an inner-city emergency department. We found 119 of 2302 consecutive adult patients (5.2 percent) to be seropositive for HIV. Although 27 patients presented with known symptomatic HIV infection, 92 of the remaining 2275 patients (4.0 percent) had unrecognized HIV infection. The highest seroprevalence rate (11.4 percent) was found among black men 30 to 34 years of age. Blacks, other nonwhites, and patients under the age of 45 had high rates of unrecognized infection. The clinical team established risk-factor status in only 29.0 percent of the patients. Of the 276 patients with identified risk factors, 13.0 percent were seropositive, whereas 3.1 percent of the 1616 patients with unknown risk-factor status were seropositive. None of the 102 patients who reported no risk factors were seropositive. Although penetrating trauma (seroprevalence, 13.6 percent) was the only clinical presentation associated with an increased seroprevalence rate independent of other known predictors of infection (P = 0.02), seropositive patients were found in all categories of clinical condition. These data, although based on observations in one emergency department setting, support the concept of universal blood and body-fluid precautions by all health care workers whether or not HIV infection is known.
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Affiliation(s)
- G D Kelen
- Division of Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
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47
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Affiliation(s)
- G D Kelen
- Division of Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
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48
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Abstract
Cigarette smoke contains carcinogens and mutagens and affects the health of smokers. Recently, increased research has proven the potentially protective activity of selenium (Se) against heavy metal toxicity, cancer, and other health disorders. Accordingly, we have proposed the fortification of tobacco with Se to develop safer cigarettes. As a start in evaluating any biological effects of added Se, we have determined the mutagenicity of inhaled, mainstream (MS) cigarette smoke condensate (CSC), with and without Se, in the preincubation assay of the Ames test. Initially, it was shown that Se, as sodium selenite, was not mutagenic at high concentrations (up to 80 micrograms/plate) with strains TA1538 and TA1978. Subsequently, the effects of different levels of Se, added to MS CSC, were examined with TA98, TA100, and TA1538. On the average, addition of 10 micrograms Se produced mutagenicity reductions of about 50%. Higher levels of added Se yielded further reductions. Cigarette sidestream (SS) smoke, collected between puffs, was also tested. Again, Se added to SS-CSC gave similar reductions, confirming its antimutagenic effect for both mainstream and sidestream smoke.
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Affiliation(s)
- O T Chortyk
- Richard B. Russell Research Center, United States Department of Agriculture, Athens, Georgia 30613
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50
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Bolli P, Burkart F, Vesanen K, Baker JL, Pinto M, Buhler FR. Electrocardiographic changes during antihypertensive therapy in the International Prospective Primary Prevention Study in Hypertension. Hypertension 1987; 9:III69-74. [PMID: 3596789 DOI: 10.1161/01.hyp.9.6_pt_2.iii69] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
In the International Prospective Primary Prevention Study in Hypertension, electrocardiographic changes before and during 3- to 5-year antihypertensive treatment were investigated in a cohort of 5819 men and women aged 40 to 64 years with entry diastolic blood pressures of 100 to 125 mm Hg. They were randomly allocated to treatment regimens that either included or excluded the slow-release beta-blocker oxprenolol. Electrocardiograms (ECGs) were assessed using the Minnesota Code and assigned to groups of normal ECGs or ECGs with pressure-related, ischemic, "intermediate," or "other" abnormalities. Antihypertensive treatment was associated with a decrease (mainly in men) of pressure-related and (mainly in women) of intermediate abnormalities. Ischemic abnormalities increased, particularly in men. Inclusion of the beta-blocker resulted in a greater reduction in intermediate abnormalities and in a lesser increase in ischemic abnormalities. Better blood pressure control was associated with a lesser increase in ischemic abnormalities and in a regression of pressure-related abnormalities. The presence of ST segment depression and of a complete left bundle branch block in the entry ECG was associated with a significant risk for sudden death and myocardial infarction. Optimal blood pressure control prevents pressure-induced cardiac target organ damage and, hence, heart failure, and may delay the progression of ischemic abnormalities. This tallies with the lower critical cardiac event rate associated with lower blood pressure that was observed in the same study.
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