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overuse of antibiotics

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https://www.readbyqxmd.com/read/28106797/the-complex-relationship-between-virulence-and-antibiotic-resistance
#1
REVIEW
Meredith Schroeder, Benjamin D Brooks, Amanda E Brooks
Antibiotic resistance, prompted by the overuse of antimicrobial agents, may arise from a variety of mechanisms, particularly horizontal gene transfer of virulence and antibiotic resistance genes, which is often facilitated by biofilm formation. The importance of phenotypic changes seen in a biofilm, which lead to genotypic alterations, cannot be overstated. Irrespective of if the biofilm is single microbe or polymicrobial, bacteria, protected within a biofilm from the external environment, communicate through signal transduction pathways (e...
January 18, 2017: Genes
https://www.readbyqxmd.com/read/28106649/neutrophil-gelatinase-associated-lipocalin-biomarker-and-urinary-tract-infections-a-diagnostic-case-control-study-nuti-study
#2
Jameca Renee Price, Larissa Guran, Jeong Youn Lim, Christina J Megli, Amanda L Clark, Sharon Renee Edwards, Mary Anna Denman, W Thomas Gregory
OBJECTIVES: Acute uncomplicated urinary tract infection (UTI) in women is often treated based on symptoms alone. Urinary tract infection symptoms are highly sensitive but lack specificity and result in overuse of antibiotics. We sought to determine if urine neutrophil gelatinase-associated lipocalin (uNGAL) levels in urine can accurately discriminate between UTI and healthy women. METHODS: We recruited adult women aged 18 to 85 years presenting in the ambulatory setting from November 2014 to January 2016...
January 18, 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28097716/parental-knowledge-of-antibiotic-use-in-children-with-respiratory-infections-a-systematic-review
#3
REVIEW
Lourdes Cantarero-Arévalo, Mia Pavelics Hallas, Susanne Kaae
OBJECTIVE: Antimicrobial resistance (AMR) is an increasing global problem. AMR threatens the effective prevention and treatment of an ever-increasing range of infections caused by bacteria, parasites, viruses and fungi. The misuse and overuse of antibiotics (AB) is the major contributor to the emergence of resistant bacteria in humans. To present and describe characteristics in parents' knowledge about when and how to use AB for an upper respiratory tract infection (URTI), their attitudes towards doctors and AB use in general, and their behaviour when their child suffers from an URTI...
February 2017: International Journal of Pharmacy Practice
https://www.readbyqxmd.com/read/28087169/antibiotic-knowledge-and-self-medication-practices-in-a-developing-country-a-cross-sectional-study
#4
Antoun Jamhour, Ammar El-Kheir, Pascale Salameh, Pierre Abi Hanna, Hanine Mansour
BACKGROUND: Self-medication is identified by the World Health Organization as a major factor leading to antibiotics overuse, misuse and resistance. This study's objectives were to evaluate the knowledge and self-medication with antibiotics in a sample of the population of Lebanon. METHODS: This study surveyed a sample of adults (over 18 years of age) residing in 2 major cities in Lebanon about their knowledge and self-medication with antibiotics. Health care professionals were excluded from the study...
January 11, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28063606/-assessment-of-antibiotic-use-and-impact-of-an-intervention-intended-to-modify-the-prescribing-behavior-in-surgical-prophylaxis-in-6hospitals-in-the-metropolitan-area-of-monterrey-mexico
#5
Gerardo Del Carmen Palacios-Saucedo, Mauricio de la Garza-Camargo, Evangelina Briones-Lara, Sandra Carmona-González, Ricardo García-Cabello, Luis Arturo Islas-Esparza, Gustavo Saldaña-Flores, Juan Roberto González-Cano, Román González-Ruvalcaba, Francisco Javier Valadez-Botello, Gerardo Enrique Muñoz-Maldonado, Carlos Alberto Montero-Cantú, Rita Delia Díaz-Ramos, Fortino Solórzano-Santos
BACKGROUND: Improper use of antibiotics increases antimicrobial resistance. OBJECTIVE: Evaluate the use of antibiotics and the impact of an intervention designed to improve antibiotic prescription for surgical prophylaxis in 6 hospitals of Monterrey, Mexico. MATERIAL AND METHODS: Design: A prospective multicenter survey and a pretest-postest experimental study. Phase 1: Survey to evaluate the use of antibiotics through an especially designed guide...
January 4, 2017: Cirugia y Cirujanos
https://www.readbyqxmd.com/read/28054670/ultra-sensitive-detection-of-kanamycin-for-food-safety-using-a-reduced-graphene-oxide-based-fluorescent-aptasensor
#6
Na-Reum Ha, In-Pil Jung, Im-Joung La, Ho-Sup Jung, Moon-Young Yoon
Overuse of antibiotics has caused serious problems, such as appearance of super bacteria, whose accumulation in the human body through the food chain is a concern. Kanamycin is a common antibiotic used to treat diverse infections; however, residual kanamycin can cause many side effects in humans. Thus, development of an ultra-sensitive, precise, and simple detection system for residual kanamycin in food products is urgently needed for food safety. In this study, we identified kanamycin-binding aptamers via a new screening method, and truncated variants were analyzed for optimization of the minimal sequence required for target binding...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28054094/antibacterial-mechanisms-of-graphene-based-composite-nanomaterials
#7
REVIEW
Mauricio D Rojas-Andrade, Gustavo Chata, Dara Rouholiman, Junli Liu, Chad Saltikov, Shaowei Chen
Pathogenic bacteria are gaining resistance to conventional antibiotics at an alarming rate due to overuse and rapid transfer of resistance genes between bacterial populations. As bacterial resistance to antibiotics causes millions of fatalities worldwide, it is of urgent importance to develop a new class of antibiotic materials with both broad-spectrum bactericidal activity and suitable biocompatibility. Graphene derivatives are rapidly emerging as an extremely promising class of antimicrobial materials due to their diverse bactericidal mechanisms and relatively low cytotoxicity towards mammalian cells...
January 19, 2017: Nanoscale
https://www.readbyqxmd.com/read/28049113/update-on-pediatric-overuse
#8
Eric R Coon, Paul C Young, Ricardo A Quinonez, Daniel J Morgan, Sanket S Dhruva, Alan R Schroeder
As concerns over health care-related harms and costs continue to mount, efforts to identify and combat medical overuse are needed. Although much of the recent attention has focused on health care for adults, children are also harmed by overuse. Using a structured PubMed search and manual tables of contents review, we identified important articles on pediatric overuse published in 2015. These articles were evaluated according to the quality of the methods, the magnitude of clinical effect, and the number of patients potentially affected and were categorized into overdiagnosis, overtreatment, and overutilization...
January 3, 2017: Pediatrics
https://www.readbyqxmd.com/read/28048964/variability-in-antibiotic-regimens-for-surgical-necrotizing-enterocolitis-highlights-the-need-for-new-guidelines
#9
Brian P Blackwood, Catherine J Hunter, Julia Grabowski
BACKGROUND: Necrotizing enterocolitis or NEC is the most common gastrointestinal emergency in the newborn. The etiology of NEC remains unknown, and treatment consists of antibiotic therapy and supportive care with the addition of surgical intervention as necessary. Unlike most surgical diseases, clear guidelines for the type and duration of peri-operative antibiotic therapy have not been established. Our aim was to review the antibiotic regimen(s) applied to surgical patients with NEC within a single neonatal intensive care unit (NICU) and to evaluate outcomes and help develop guidelines for antibiotic administration in this patient population...
January 3, 2017: Surgical Infections
https://www.readbyqxmd.com/read/28043541/mixed-metal-oxide-nanoparticles-inhibit-growth-of-mycobacterium-tuberculosis-into-thp-1-cells
#10
A R Jafari, T Mosavi, N Mosavari, A Majid, F Movahedzade, M Tebyaniyan, M Kamalzadeh, M Dehgan, S Jafari, S Arastoo
OBJECTIVE/BACKGROUND: Humans have been in a constant battle with tuberculosis (TB). Currently, overuse of antibiotics has resulted in the spread of multidrug-resistant Mycobacterium tuberculosis (MDR), leading to antibiotic ineffectiveness at controlling the spread of TB infection in host cells and especially macrophages. Additionally, the Mycobacterium tuberculosis (Mtb) has developed methods to evade the immune system and survive. With the discovery of nanoparticle (NP)-based drugs, it is necessary to research their anti-mycobacterial properties and bactericidal mechanisms...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28035692/application-of-a-risk-score-to-identify-older-adults-with-community-onset-pneumonia-most-likely-to-benefit-from-empiric-pseudomonas-therapy
#11
Christopher R Frei, Sylvie Rehani, Grace C Lee, Natalie K Boyd, Erene Attia, Ashley Pechal, Rachel S Britt, Eric M Mortensen
STUDY OBJECTIVE: To assess the impact of empiric Pseudomonas pharmacotherapy on 30-day mortality in hospitalized patients with community-onset pneumonia stratified according to their risk (low, medium, or high) of drug-resistant pathogens. DESIGN: Retrospective cohort study. DATA SOURCE: Veterans Health Administration database. PATIENTS: A total of 50,119 patients who were at least 65 years of age, hospitalized with pneumonia, and received antibiotics within 48 hours of admission between fiscal years 2002 and 2007; patients were stratified into empiric Pseudomonas therapy (31,027 patients) and no Pseudomonas therapy (19,092 patients) groups based on antibiotics received during their first 48 hours of admission...
December 30, 2016: Pharmacotherapy
https://www.readbyqxmd.com/read/28005295/antibiotics-in-endodontics-a-review
#12
REVIEW
J J Segura-Egea, K Gould, B Hakan Şen, P Jonasson, E Cotti, A Mazzoni, H Sunay, L Tjäderhane, P M H Dummer
The overuse of antibiotics and the emergence of antibiotic-resistant bacterial strains is a global concern. This concern is also of importance in terms of the oral microbiota and the use of antibiotics to deal with oral and dental infections. The aim of this paper is to review the current literature on the indications and use of antibiotics and to make recommendations for their prescription in endodontic patients. Odontogenic infections, including endodontic infections, are polymicrobial, and in most cases, the prescription of antibiotics is empirical...
December 22, 2016: International Endodontic Journal
https://www.readbyqxmd.com/read/27997706/exploring-the-potential-of-boronic-acids-as-inhibitors-of-oxa-24-40-%C3%AE-lactamase
#13
Josephine P Werner, Joshua M Mitchell, Magdalena A Taracila, Robert A Bonomo, Rachel A Powers
β-lactam antibiotics are crucial to the management of bacterial infections in the medical community. Due to overuse and misuse, clinically significant bacteria are now resistant to many commercially available antibiotics. The most widespread resistance mechanism to β-lactams is the expression of β-lactamase enzymes. To overcome β-lactamase mediated resistance, inhibitors were designed to inactivate these enzymes. However, current inhibitors (clavulanic acid, tazobactam, and sulbactam) for β-lactamases also contain the characteristic β-lactam ring, making them susceptible to resistance mechanisms employed by bacteria...
December 20, 2016: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/27991550/proteomic-analysis-reveals-that-metabolic-flows-affect-the-susceptibility-of-aeromonas-hydrophila-to-antibiotics
#14
Zujie Yao, Wanxin Li, Yi Lin, Qian Wu, Feifei Yu, Wenxiong Lin, Xiangmin Lin
The overuse of antibiotics results in the development of antibiotic resistance and limits the useful life of these drugs in fighting bacteria, including Aeromonas hydrophila, a well-known opportunistic pathogen that causes serious infections in fish and other animals. In this study, we investigated the adaptive resistance mechanism in A. hydrophila by multiple proteomic methods. Dimethyl labeling and label-free methods were performed to compare the differential expression of proteins in response to various doses of oxytetracycline (OXY)...
December 19, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27980020/identification-of-ly2-members-as-antimicrobial-peptides-from-zebrafish-danio-rerio
#15
Xuemin Liu, Xuwen Cao, Su Wang, Guangdong Ji, Shicui Zhang, Hongyan Li
The emergence of multidrug-resistant (MDR) microbes caused by overuse of antibiotics leads to urgent demands for novel antibiotics exploration. Our recent data showed that Ly2.1-3 (a novel lymphocyte antigen 6 (Ly6) gene cluster) were proteins with cationic nature and rich in cysteine content, that are characteristic of antimicrobial peptides (AMPs) and their expression were all significantly up-regulated after challenge with lipopolysaccharide (LPS). These strongly suggested that Ly2.1-3 are potential AMPs, but firm evidence are lacking...
February 28, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/27966556/mv140-a-sublingual-polyvalent-bacterial-preparation-to-treat-recurrent-urinary-tract-infections-licenses-human-dendritic-cells-for-generating-th1-th17-and-il-10-responses-via-syk-and-myd88
#16
C Benito-Villalvilla, C Cirauqui, C M Diez-Rivero, M Casanovas, J L Subiza, O Palomares
Recurrent urinary tract infections (RUTIs) are one of the most common bacterial infectious diseases, especially in women. Antibiotics remain the mainstay of treatment, but their overuse is associated with antibiotic-resistant infections and deleterious effects in the microbiota. Therefore, alternative approaches are fully demanded. Sublingual immunization with MV140 (Uromune), a polyvalent bacterial preparation (PBP) of whole heat-inactivated bacteria, demonstrated clinical efficacy for the treatment of RUTIs, but the involved immunological mechanisms remain unknown...
December 14, 2016: Mucosal Immunology
https://www.readbyqxmd.com/read/27942365/isolation-antimicrobial-susceptibility-profile-and-detection-of-sul1-blatem-and-blashv-in-amoxicillin-clavulanate-resistant-bacteria-isolated-from-retail-sausages-in-kampar-malaysia
#17
Lih-Shin Tew, Li-Yen She, Choy-Hoong Chew
BACKGROUND: Due to the overuse of antibiotics in livestock as a growth-promoting agent, the emergence of multi-antibiotic resistant bacteria is becoming a concern. OBJECTIVES: In this study, we aimed to detect the presence and discover the molecular determinants of foodborne bacteria in retail sausages resistant towards the antibacterial agent amoxicillin-clavulanate. METHODS: Two grams of sausages were chopped into small pieces and transferred into sterile Luria-Bertani (LB) enrichment broths overnight before they were plated on MacConkey agar petri dishes...
October 2016: Jundishapur Journal of Microbiology
https://www.readbyqxmd.com/read/27909252/nurses-as-antibiotic-brokers-institutionalized-praxis-in-the-hospital
#18
Alex Broom, Jennifer Broom, Emma Kirby, Graham Scambler
We are likely moving rapidly toward a post-antibiotic era, as a result of escalating antimicrobial resistance, rapidly declining antibiotic production and profligate overuse. Hitherto research has almost exclusively focused on doctors' prescribing, with nurses' roles in antibiotic use remaining virtually invisible. Drawing on interviews with 30 nurses, we focus on nurses as brokers of doctors' antibiotic decisions, nursing capacity to challenge doctors' decisions, and, "back stage" strategies for circumnavigating organizational constraints...
November 30, 2016: Qualitative Health Research
https://www.readbyqxmd.com/read/27896609/moral-polemics-of-far-reaching-economic-consequences-of-antibiotics-overuse
#19
Marek Vochozka, Anna Maroušková, Petr Šuleř
The unethical overuse of antibiotics to seek to achieve a shortening of the treatment period raises the cost of health services and poses a threat to humanity due to the gradual development of antibiotic resistance. Other consequences of our modern passion for antibiotics have appeared. Small concentrations of antibiotic residues in sewage waters slow down the metabolism of anaerobic microorganism thereby reducing the overall performance of the anaerobic fermentation used to detoxify and digest sewage and other collected organic wastes...
November 28, 2016: Science and Engineering Ethics
https://www.readbyqxmd.com/read/27892497/optimising-antibiotic-usage-to-treat-bacterial-infections
#20
Iona K Paterson, Andy Hoyle, Gabriela Ochoa, Craig Baker-Austin, Nick G H Taylor
The increase in antibiotic resistant bacteria poses a threat to the continued use of antibiotics to treat bacterial infections. The overuse and misuse of antibiotics has been identified as a significant driver in the emergence of resistance. Finding optimal treatment regimens is therefore critical in ensuring the prolonged effectiveness of these antibiotics. This study uses mathematical modelling to analyse the effect traditional treatment regimens have on the dynamics of a bacterial infection. Using a novel approach, a genetic algorithm, the study then identifies improved treatment regimens...
November 28, 2016: Scientific Reports
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