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Comparative effectiveness of antibiotic treatment strategies for pediatric skin and soft-tissue infections.
Williams DJ, Cooper WO, Kaltenbach LA, Dudley JA, Kirschke DL, Jones TF, Arbogast PG, Griffin MR, Creech CB
(2011) Pediatrics 128: e479-87
MeSH Terms: Adolescent, Anti-Infective Agents, Child, Child, Preschool, Clindamycin, Female, Humans, Infant, Male, Methicillin-Resistant Staphylococcus aureus, Retrospective Studies, Skin Diseases, Bacterial, Soft Tissue Infections, Staphylococcal Skin Infections, Trimethoprim, Sulfamethoxazole Drug Combination
Show Abstract · Added February 3, 2014
OBJECTIVE - To compare the effectiveness of clindamycin, trimethoprim-sulfamethoxazole, and β-lactams for the treatment of pediatric skin and soft-tissue infections (SSTIs).
METHODS - A retrospective cohort of children 0 to 17 years of age who were enrolled in Tennessee Medicaid, experienced an incident SSTI between 2004 and 2007, and received treatment with clindamycin (reference), trimethoprim-sulfamethoxazole, or a β-lactam was created. Outcomes included treatment failure and recurrence, defined as an SSTI within 14 days and between 15 and 365 days after the incident SSTI, respectively. Adjusted models stratified according to drainage status were used to estimate the risk of treatment failure and time to recurrence.
RESULTS - Among the 6407 children who underwent drainage, there were 568 treatment failures (8.9%) and 994 recurrences (22.8%). The adjusted odds ratios for treatment failure were 1.92 (95% confidence interval [CI]: 1.49-2.47) for trimethoprim-sulfamethoxazole and 2.23 (95% CI: 1.71-2.90) for β-lactams. The adjusted hazard ratios for recurrence were 1.26 (95% CI: 1.06-1.49) for trimethoprim-sulfamethoxazole and 1.42 (95% CI: 1.19-1.69) for β-lactams. Among the 41 094 children without a drainage procedure, there were 2435 treatment failures (5.9%) and 5436 recurrences (18.2%). The adjusted odds ratios for treatment failure were 1.67 (95% CI: 1.44-1.95) for trimethoprim-sulfamethoxazole and 1.22 (95% CI: 1.06-1.41) for β-lactams; the adjusted hazard ratios for recurrence were 1.30 (95% CI: 1.18-1.44) for trimethoprim-sulfamethoxazole and 1.08 (95% CI: 0.99-1.18) for β-lactams.
CONCLUSIONS - Compared with clindamycin, use of trimethoprim-sulfamethoxazole or β-lactams was associated with increased risks of treatment failure and recurrence. Associations were stronger for those with a drainage procedure.
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15 MeSH Terms
Entry of Bacillus anthracis spores into epithelial cells is mediated by the spore surface protein BclA, integrin α2β1 and complement component C1q.
Xue Q, Gu C, Rivera J, Höök M, Chen X, Pozzi A, Xu Y
(2011) Cell Microbiol 13: 620-34
MeSH Terms: Animals, Anthrax, Bacillus anthracis, Bacterial Adhesion, CHO Cells, Cell Line, Complement C1q, Cricetinae, Cricetulus, Endocytosis, Epithelial Cells, Humans, Integrin alpha2beta1, Membrane Glycoproteins, Mice, Skin Diseases, Bacterial, Spores, Bacterial
Show Abstract · Added February 24, 2014
Inhalational anthrax is initiated by pulmonary exposure to Bacillus anthracis spores. Spore entry into lung epithelial cells is observed both in vitro and in vivo and evidence suggests it is important for bacterial dissemination and virulence. However the specific host receptor and spore factor that mediate the entry process were unknown. Here, we report that integrin α2β1 is a major receptor for spore entry. This is supported by results from blocking antibodies, siRNA knock-down, colocalization, and comparison of spore entry into cells that do or do not express α2. BclA, a major spore surface protein, is found to be essential for entry and α2β1-mediated entry is dependent on BclA. However, BclA does not appear to bind directly to α2. Furthermore, spore entry into α2-expressing cells is dramatically reduced in the absence of serum, suggesting that additional factors are involved. Finally, complement component C1q, also an α2β1 ligand, appears to act as a bridging molecule or a cofactor for BclA/α2β1-mediated spore entry and BclA binds to C1q in a dose-dependent and saturable manner. These findings suggest a novel mechanism for pathogen entry into host cells as well as a new function for C1q-integrin interactions. The implications of these findings are discussed.
© 2010 Blackwell Publishing Ltd.
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17 MeSH Terms
Mycobacterial infection masquerading as cutaneous sarcoidosis.
Moss J, Zic J, Drake W
(2009) Clin Exp Dermatol 34: e199-201
MeSH Terms: Adult, Biopsy, Diagnosis, Differential, Female, Humans, Mycobacterium Infections, Nontuberculous, Nontuberculous Mycobacteria, Sarcoidosis, Skin Diseases, Skin Diseases, Bacterial
Show Abstract · Added May 27, 2014
Granulomatous skin inflammation can be secondary to a number of infectious and noninfectious aetiologies. Although the presence of Mycobacterium gordonae is commonly thought to reflect environmental contamination, infection can occur even in immunocompetent hosts. Proper diagnostic evaluation of granulomatous inflammation of the skin is essential in order to optimize treatment recommendations.
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10 MeSH Terms
Outbreak of persistent cutaneous abscesses due to Mycobacterium chelonae after mesotherapy sessions, Lima, Peru.
Munayco CV, Grijalva CG, Culqui DR, Bolarte JL, Suárez-Ognio LA, Quispe N, Calderon R, Ascencios L, Del Solar M, Salomón M, Bravo F, Gotuzzo E
(2008) Rev Saude Publica 42: 146-9
MeSH Terms: Abscess, Adult, Complementary Therapies, Cosmetic Techniques, Disease Outbreaks, Drug Contamination, Female, Humans, Injections, Middle Aged, Mycobacterium Infections, Nontuberculous, Mycobacterium chelonae, Peru, Skin Diseases, Bacterial
Show Abstract · Added July 27, 2018
Outbreaks of rapidly growing mycobacteria have been occasionally described. The article reports an outbreak of cutaneous abscesses due to Mycobacterium chelonae following mesotherapy in Lima, Peru. From December 2004 through January 2005, 35 subjects who had participated in mesotherapy training sessions presented with persistent cutaneous abscesses. Thirteen (37%) of these suspected cases consented to undergo clinical examination. Skin punch-biopsies were collected from suspicious lesions and substances injected during mesotherapy were analyzed. Suspected cases were mainly young women and lesions included subcutaneous nodules, abscesses and ulcers. Mycobacterium chelonae was isolated from four patients and from a procaine vial. In conclusion, it is important to consider mesotherapy as a potential source of rapidly growing mycobacteria infections.
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MeSH Terms
Surveillance for anthrax cases associated with contaminated letters, New Jersey, Delaware, and Pennsylvania, 2001.
Tan CG, Sandhu HS, Crawford DC, Redd SC, Beach MJ, Buehler JW, Bresnitz EA, Pinner RW, Bell BP, Regional Anthrax Surveillance Team, Centers for Disease Control and Prevention New Jersey Anthrax Surveillance Team
(2002) Emerg Infect Dis 8: 1073-7
MeSH Terms: Adult, Anthrax, Bacillus anthracis, Bioterrorism, Coroners and Medical Examiners, Delaware, Equipment Contamination, Female, Hospitals, Humans, Inhalation Exposure, New Jersey, Pennsylvania, Population Surveillance, Postal Service, Respiratory Tract Infections, Skin Diseases, Bacterial, Time Factors
Show Abstract · Added December 10, 2013
In October 2001, two inhalational anthrax and four cutaneous anthrax cases, resulting from the processing of Bacillus anthracis-containing envelopes at a New Jersey mail facility, were identified. Subsequently, we initiated stimulated passive hospital-based and enhanced passive surveillance for anthrax-compatible syndromes. From October 24 to December 17, 2001, hospitals reported 240,160 visits and 7,109 intensive-care unit admissions in the surveillance area (population 6.7 million persons). Following a change of reporting criteria on November 8, the average of possible inhalational anthrax reports decreased 83% from 18 to 3 per day; the proportion of reports requiring follow-up increased from 37% (105/286) to 41% (47/116). Clinical follow-up was conducted on 214 of 464 possible inhalational anthrax patients and 98 possible cutaneous anthrax patients; 49 had additional laboratory testing. No additional cases were identified. To verify the limited scope of the outbreak, surveillance was essential, though labor-intensive. The flexibility of the system allowed interim evaluation, thus improving surveillance efficiency.
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18 MeSH Terms