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https://www.readbyqxmd.com/read/28527283/-frequency-of-helicobacter-pylori-nitroreductase-rdxa-mutations-for-metronidazole-activation-in-a-population-in-the-cauca-department-colombia
#1
Claudia Patricia Acosta, Andrés Javier Quiroga, Carlos H Sierra, Alba Alicia Trespalacios
INTRODUCTION: Resistance to metronidazole is a key factor associated with Helicobacter pylori treatment failure. Even though resistance is mostly associated with RdxA nitroreductase mutations, studies of this H. pylori protein in Popayán (Colombia) are still incipient. OBJECTIVE: To evaluate the frequency of mutations in the RdxA nitroreductase in a population of patients with H. pylori-positive gastrointestinal disease. MATERIALS AND METHODS: We amplified the DNA of 170 gastric biopsies by PCR to detect mutations in the RdxA nitroreductase...
June 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28524341/randomized-controlled-study-of-a-novel-triple-nitazoxanide-ntz-containing-therapeutic-regimen-versus-the-traditional-regimen-for-eradication-of-helicobacter-pylori-infection
#2
Mona Ah Shehata, Raghda Talaat, Samah Soliman, Huda Elmesseri, Shaimaa Soliman, Sherief Abd-Elsalam
BACKGROUND: Helicobacter pylori infection has become more and more resistant to conventional first-line treatment regimens. So, there is a considerable interest in evaluating new antibiotic combinations and regimens. Nitazoxanide is an anti-infective drug with demonstrated activity against protozoa and anaerobic bacteria including H. pylori. This work is designed to evaluate the efficacy and safety of a unique triple nitazoxanide-containing regimen as a treatment regimen in Egyptian patients with H...
May 19, 2017: Helicobacter
https://www.readbyqxmd.com/read/28522904/importance-of-antimicrobial-susceptibility-testing-for-the-management-of-eradication-in-helicobacter-pylori-infection
#3
REVIEW
Nazlı Arslan, Özlem Yılmaz, Ebru Demiray-Gürbüz
The management of Helicobacter pylori (H. pylori) infection treatment differs from the common treatment protocol for other infectious diseases. Because culture- or molecular-guided approaches face several practical issues, such as the invasive procedures required to obtain gastric biopsy specimens and the lack of availability of routine laboratory testing in some places, H. pylori treatment includes the administration of two or three empirically selected antibiotics combined with a proton pump inhibitor rather than evidence-based eradication treatment...
April 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28522362/susceptibility-of-bacterial-vaginosis-bv-associated-bacteria-to-secnidazole-compared-to-metronidazole-tinidazole-and-clindamycin
#4
Melinda A B Petrina, Lisa A Cosentino, Lorna K Rabe, Sharon L Hillier
Secnidazole, a 5-nitroimidazole with a longer half-life, is structurally related to metronidazole and tinidazole. For treatment of bacterial vaginosis (BV), secnidazole is a suitable single-dose oral drug having a longer serum half-life than metronidazole. The objective of this study was to evaluate the antimicrobial susceptibility of vaginal isolates of facultative and anaerobic bacteria to secnidazole, metronidazole, tinidazole and clindamycin. A total of 605 unique BV-related bacteria and 108 isolates of lactobacilli recovered from the human vagina of US women during the years 2009-2015 were tested for antimicrobial susceptibility by the agar dilution CLSI reference method to determine the minimal inhibitory concentration (MIC)...
May 15, 2017: Anaerobe
https://www.readbyqxmd.com/read/28516109/serum-derived-bovine-immunoglobulin-as-novel-adjunct-in-complicated-clostridium-difficile-colitis-treatment
#5
Samson Ferm, Nims Varadi, Constantine Fisher, Ellen Gutkin
Clostridium difficile infection (CDI) is a well-known complication of antibiotic therapy. It is associated with significant morbidity, mortality, and cost in the hospital setting. The main symptoms include watery diarrhea, abdominal pain, and distension, but CDI can also present as toxic megacolon, bowel perforation with peritonitis, sepsis and renal failure. Therapy includes metronidazole and oral vancomycin, with rectal vancomycin and fecal transplant reserved for more complicated cases. Adjunctive treatments such as probiotics have been tried with mixed results...
2017: ACG Case Reports Journal
https://www.readbyqxmd.com/read/28516058/comparison-of-amoxicillin-and-metronidazole-effect-on-three-drug-regimen-for-the-treatment-of-helicobacter-pylori-infection-in-children
#6
Karam-Ali Kasiri, Abolfazl Khoshdel, Afshin Karimi, Morteza Sedehi, Niloufar Kasiri
Helicobacter pylori is an important risk factor for chronic gastritis, peptic ulcer, and gastric cancer. Three-drug regimen is the first-line treatment for this infection, but the response rate to treatment varies in different geographical regions. This study was conducted to comparatively determine the effect of amoxicillin and metronidazole on three-drug regimen to treat H. pylori infection in 1-15-year-old children. This clinical trial was conducted on 82 patients aged 1-15 years with convenience sampling referring to the Endoscopy Unit of Hajar Hospital, Shahrekord...
April 2017: Journal of Advanced Pharmaceutical Technology & Research
https://www.readbyqxmd.com/read/28514717/quantification-of-active-ingredients-in-semi-solid-pharmaceutical-formulations-by-near-infrared-spectroscopy
#7
Lisa B Schlegel, Manfred Schubert-Zsilavecz, Mona Abdel-Tawab
Near infrared (NIR) spectroscopy is increasingly gaining significance in the pharmaceutical industry for quality and in-process control. However, the potential of this method for quantitative quality control in pharmacies has long been neglected and little data is available on its application in analysis of creams and ointments. This study evaluated the applicability of NIR spectrometer with limited wavelength range (1000-1900nm) for quantitative quality control of six different dermatological semi-solid pharmaceutical preparations...
May 6, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28513713/one-step-hydrothermal-synthesis-of-photoluminescent-carbon-nanodots-with-selective-antibacterial-activity-against-porphyromonas-gingivalis
#8
Junjun Liu, Siyu Lu, Qiuling Tang, Kai Zhang, Weixian Yu, Hongchen Sun, Bai Yang
Carbon dots (CDs) with high quantum yield (QY), low toxicity and good biocompatibility are the major quests of biomedical research. In this paper, we develop a green, simple hydrothermal approach to synthesize water-soluble, nontoxic, highly photoluminescent carbon nanodots (CNDs) from Metronidazole, which possess selective antibacterial activity against obligate anaerobes for the first time. Metronidazole was used as a sole precursor to prepare CNDs at 250 °C (CNDs-250) for 8 h. After the CNDs-250 with an average size of 2...
May 17, 2017: Nanoscale
https://www.readbyqxmd.com/read/28507638/antibiotic-utilization-in-pediatric-hospitalized-patients-a-single-center-study
#9
Hasime Qorraj Bytyqi, Rexhep Hoxha, Elton Bahtiri, Valon Krasniqi, Shaip Krasniqi
BACKGROUND: Antibiotics are among the most commonly prescribed drugs in paediatrics. In most cases, antibiotics are started on an empirical basis, without proof of a bacterial infection, either before the start of therapy or afterwards. AIM: The main objective of this study was to analyse the consumption of antibiotics in hospitalised paediatric patients. MATERIAL AND METHODS: This retrospective study investigated the consumption of antimicrobials in defined daily doses (DDDs according to the Anatomical Therapeutical Chemical/DDD index) in Pulmonology, Gastroenterology and Nephrology Departments at Pediatric Clinic of the tertiary hospital...
April 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28507349/antibiotics-in-acute-calculous-cholecystitis-do-tokyo-guidelines-influence-the-surgeons-practices
#10
Hassaan Bari, Muhammad Rizwan Khan, Amir Hafeez Shariff
OBJECTIVE: To observe changes in surgeons' practice of antibiotic usage in patients with acute cholecystitis before and after the implementation of Tokyo Guidelines. METHODS: This retrospective, descriptive study was conducted at the Aga Khan University Hospital, Karachi, and comprised the medical records of all patients with the diagnosis of acute calculus cholecystitis who presented in 2009 and those who presented in 2014 after the implementation of Tokyo Guidelines...
May 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28506722/primary-helicobacter-pylori-resistance-in-elderly-patients-over-20-years-a-bulgarian-study
#11
Lyudmila Boyanova, Galina Gergova, Rumyana Markovska, Nayden Kandilarov, Lyubomir Davidkov, Zoya Spassova, Ivan Mitov
We evaluated the antibiotic susceptibility of 233 Helicobacter pylori strains isolated in the period 2011-2016, involving 62 strains from elderly patients aged 66-93years and 171 strains from younger adults. To assess resistance evolution, primary resistance rates in 92 strains from as many patients aged ≥60years in 1996-2003 were compared with those in 85 strains from infected patients in the same age group in 2011-2016. In the patients aged >65years evaluated during the last 6 years, amoxicillin resistance according to EUCAST and prior breakpoints was 1...
May 7, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28506634/-antimicrobial-susceptibility-of-helicobacter-pylori-strains-isolated-from-gastric-lesions
#12
Laura Del V Pereyra, Rosa C Gorordo Ipiña, Fabiana A Berruezo, Cristian A Amieva, Maria E García, Marina T Bottiglieri
Antimicrobial susceptibility was evaluated by two diffusion methods: E-test strips to determine minimum inhibitory concentration (MIC) and disk diffusion for amoxicillin, clarithromycin, metronidazole and ciprofloxacin in 30 Helicobacter pylori strains isolated from gastric biopsies. No strains were resistant to amoxicillin, 17% (5/30) were resistant to clarithromycin, 20% (6/30) ciprofloxacin by both methods, and 37% (11/30) to metronidazole by the E-test. Although the number of strains studied was reduced, there was a single mismatch in interpreting susceptibility when both methods were compared; the same mismatch was observed for metronidazole, being categorized as sensitive by the E-test and as intermediate by disk diffusion...
May 12, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/28506633/-anaerobiospirillum-succiniciproducens-and-desulfovibrio-desulfuricans-in-2-cases-of-insidious-bacteremia
#13
Silvia C Predari, Adriana N de Paulis, Eugenia Bertona, Daiana Guevara Núñez, Juan P Suárez, Liliana Castello
Two cases of insidious bacteremia by uncommon curve and spiral-shaped, motile anaerobic gram-negative rods are presented. Both of them were of an unclear origin and occurred in immunosuppressed patients with simultaneous diseases. The key tests for the identification of Anaerobiospirillum were its micromorphology, a strictly anaerobic condition, negative catalase activity, the special-potency disk profile, glucose fermentation, and β-NAG production. Desulfovibrio species was identified by all the above preliminary tests but with a different disk profile, as well as for being asaccharolytic and desulfoviridin and H2S producer...
May 12, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/28506071/fecal-microbiota-transplantation-in-recurrent-clostridium-difficile-infection-in-a-patient-with-concomitant-inflammatory-bowel-disease
#14
Marta Gravito-Soares, Elisa Gravito-Soares, Francisco Portela, Manuela Ferreira, Carlos Sofia
The use of fecal microbiota transplantation in recurrent Clostridium difficile infection and coexistent inflammatory bowel disease remains unclear. A 61-year-old man with ulcerative pancolitis was diagnosed with a third recurrence of Clostridium difficile infection, previously treated with metronidazole, vancomycin and fidaxomicin. Fecal microbiota transplantation of an unrelated healthy donor was performed by the lower route. After a twelve month follow-up, the patient remains asymptomatic without Clostridium difficile infection relapses or inflammatory bowel disease flare-ups...
May 16, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28501926/an-outbreak-of-clostridium-difficile-pcr-ribotype-027-in-spain-risk-factors-for-recurrence-and-a-novel-treatment-strategy
#15
E Bouza, L Alcalá, M Marín, M Valerio, E Reigadas, P Muñoz, M González-Del Vecchio, V de Egea
An outbreak of Clostridium difficile infection (CDI) caused by ribotype 027 (B1/NAP1) began in our hospital in November 2014, and produced 141 episodes in the following months. The aim of this study is to describe this outbreak, assess risk factors for recurrence of CDI-027 and to analyze the implementation of a novel treatment strategy. This is a prospective study of all patients with CDI-027, from November 2014 to November 2015. The epidemiological data were collected daily for each patient. We compared clinical characteristics and treatment between patients with and without recurrence of CDI-027...
May 13, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28501669/an-update-on-bacterial-brain-abscess-in-immunocompetent-patients
#16
REVIEW
R Sonneville, R Ruimy, N Benzonana, L Riffaud, A Carsin, J-M Tadié, C Piau, M Revest, P Tattevin
BACKGROUND: Brain abscess is a focal infection of the brain, that begins as a localized area of cerebritis. In immunocompetent patients, bacteria are responsible for >95% of brain abscess, and enter the brain either through contiguous spread following otitis, sinusitis, neurosurgery, or cranial trauma, or through hematogenous dissemination. AIMS: To identify recent advents in the field. Sources We searched Medline and Embase for articles published during years 2012-2016, with the keywords 'brain', and 'abscess'...
May 10, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28497915/in-vitro-diagnostic-testing-for-antibiotic-allergy
#17
REVIEW
Inmaculada Doña, Maria J Torres, Maria I Montañez, Tahia D Fernández
Allergy to antibiotics is an important worldwide problem, with an estimated prevalence of up to 10% of the population. Reaction patterns for different antibiotics have changed in accordance with consumption trends. Most of the allergic reactions to antibiotics have been reported for betalactams, followed by quinolones and macrolides and, to a lesser extent, to others, such as metronidazole clindamycin and sulfonamides. The diagnostic procedure includes a detailed clinical history, which is not always possible and can be unreliable...
July 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28490487/bifidobacterium-bacteremia-clinical-characteristics-and-a-genomic-approach-to-assess-pathogenicity
#18
Eirin Esaiassen, Erik Hjerde, Jorunn Pauline Cavanagh, Gunnar Skov Simonsen, Claus Klingenberg
Bifidobacteria are commensals that colonize the orogastrointestinal tract, and rarely cause invasive human infections. However, an increasing number of bifidobacterial blood culture isolates has lately been observed in Norway. In order to investigate the pathogenicity of Bifidobacterium species responsible for bacteremia, we studied Bifidobacterium isolates from 15 patients with a positive blood culture obtained during 2013 to 2015. We collected clinical data and analyzed phenotypic and genotypic antibiotic susceptibility...
May 10, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28489336/antimicrobial-activity-of-natural-products-against-clostridium-difficile-in-vitro
#19
Niloufar Roshan, Thomas V Riley, Katherine A Hammer
AIMS: To investigate the antimicrobial activity of various natural products against C. difficile in vitro. METHODS AND RESULTS: The antibacterial activity of 20 natural products was determined by the agar well diffusion and broth microdilution assays against four C. difficile strains, three comparator organisms and four gastrointestinal commensal organisms. Of the raw natural products, garlic juice had the highest activity. The most active processed products were peppermint oil and the four pure compounds trans-cinnamaldehyde, allicin, menthol and zingerone...
May 10, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28486260/demodicosis-in-pediatric-cancer
#20
Jenneke E van Atteveld, Marlies de Graaf, Martine van Grotel, Marry M van den Heuvel-Eibrink
Demodicosis is a rare condition that most often occurs in immunocompromised patients. We here describe a boy with T-cell non-Hodgkin lymphoma who developed a facial papulopustular eruption just before finalizing T-cell non-Hodgkin lymphoma treatment. He was treated for several infectious diseases without improvement. Demodicosis was considered and complete resolution was finally reached with topical metronidazole. We conducted a systematic search of all previously described cases of this condition in children with cancer, which showed that almost all demodicosis cases occurred in patients with lymphoreticular malignancies during maintenance chemotherapy...
May 8, 2017: Journal of Pediatric Hematology/oncology
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