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antimicrobial chemotherapy

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https://www.readbyqxmd.com/read/28720578/systematic-longitudinal-survey-of-invasive-escherichia-coli-in-england-demonstrates-a-stable-population-structure-only-transiently-disturbed-by-the-emergence-of-st131
#1
Teemu Kallonen, Hayley J Brodrick, Simon R Harris, Jukka Corander, Nicholas M Brown, Veronique Martin, Sharon J Peacock, Julian Parkhill
Escherichia coli associated with urinary tract infections and bacteremia has been intensively investigated, including recent work focusing on the virulent, globally disseminated, multidrug-resistant lineage ST131. To contextualize ST131 within the broader E. coli population associated with disease, we used genomics to analyze a systematic 11-yr hospital-based survey of E. coli associated with bacteremia using isolates collected from across England by the British Society for Antimicrobial Chemotherapy and from the Cambridge University Hospitals NHS Foundation Trust...
July 18, 2017: Genome Research
https://www.readbyqxmd.com/read/28687693/adrenal-crisis-in-metastatic-breast-cancer
#2
Bernhard Doleschal, Andreas Petzer, Karl J Aichberger
A female patient with oestrogen receptor-positive and human epidermal growth factor receptor 2 (HER2)-positive invasive lobular breast cancer presented with progressive disease on CT scan. Some days after initiation of antineoplastic chemotherapy and anti-HER2 targeted antibody therapy, the patient presented with profuse diarrhoea, neutropaenia, nausea and weakness. Although Clostridium difficile was rapidly tackled as a causative agent of gastrointestinal complaints, clinical situation did not markedly improve despite proper antimicrobial treatment...
July 6, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28674308/improved-clinical-outcomes-in-patients-with-positive-blood-culture-by-proactive-intervention-of-antimicrobial-use-impact-of-antimicrobial-stewardship-program-implementation-on-clinical-practice
#3
Takehiro Yamada, Keisuke Kagami, Shungo Imai, Koji Akizawa, Sumio Iwasaki, Tatsuya Fukumoto, Nobuhisa Ishiguro, Ken Iseki
 Bacteremia is one of the most serious infectious illness resulting from nosocomial infection. Therefore, appropriate antimicrobial chemotherapy should be provided as soon as possible to patients exhibiting symptoms of infectious disease and having positive blood culture results. Antimicrobial stewardship (AS) guidelines were recently released by the Infectious Diseases Society of America. The guidelines recommend "proactive intervention and feedback" as one of the core strategies for implementing optimal antimicrobial drug use to improve patient outcomes in clinical settings...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28669567/nationwide-surveillance-of-bacterial-respiratory-pathogens-conducted-by-the-surveillance-committee-of-japanese-society-of-chemotherapy-the-japanese-association-for-infectious-diseases-and-the-japanese-society-for-clinical-microbiology-in-2012-general-view-of
#4
Katsunori Yanagihara, Akira Watanabe, Nobuki Aoki, Tetsuya Matsumoto, Masaki Yoshida, Junko Sato, Tomotaro Wakamura, Keisuke Sunakawa, Junichi Kadota, Hiroshi Kiyota, Satoshi Iwata, Mitsuo Kaku, Hideaki Hanaki, Yoshinobu Ohsaki, Satoru Fujiuchi, Manabu Takahashi, Kenichi Takeuchi, Hiroaki Takeda, Hideki Ikeda, Makoto Miki, Susumu Nakanowatari, Hiroshi Takahashi, Mutsuko Utagawa, Hajime Nishiya, Sayoko Kawakami, Eriko Morino, Jin Takasaki, Kazuhisa Mezaki, Naohiko Chonabayashi, Chie Tanaka, Hideko Sugiura, Hajime Goto, Takeshi Saraya, Daisuke Kurai, Yasuhiro Katono, Rika Inose, Yoshihito Niki, Takahiro Takuma, Makoto Kudo, Shigeru Ehara, Yoshimi Sato, Hiroki Tsukada, Nobuei Watabe, Yasuo Honma, Hiroshige Mikamo, Yuka Yamagishi, Atsushi Nakamura, Minoru Ohashi, Masafumi Seki, Shigeto Hamaguchi, Masahiro Toyokawa, Yasunori Fujikawa, Noriko Mitsuno, Akira Ukimura, Takayuki Miyara, Takahito Nakamura, Keiichi Mikasa, Kei Kasahara, Koji Ui, Saori Fukuda, Akihiro Nakamura, Mika Morimura, Mikio Yamashita, Yoshio Takesue, Yasunao Wada, Keisuke Sugimoto, Nobuchika Kusano, Motoko Nose, Eiichirou Mihara, Masao Kuwabara, Masao Doi, Yaeko Watanabe, Hirokazu Tokuyasu, Satoshi Hino, Kiyoshi Negayama, Hiroshi Mukae, Toshinori Kawanami, Toshiyuki Ota, Masaki Fujita, Junichi Honda, Kazufumi Hiramatsu, Yosuke Aoki, Mami Fukuoka, Hiroki Magarifuchi, Zenzo Nagasawa, Norihito Kaku, Jiro Fujita, Futoshi Higa, Masao Tateyama
The nationwide surveillance on antimicrobial susceptibility of bacterial respiratory pathogens from the patients in Japan was conducted by Japanese Society of Chemotherapy, Japanese association for infectious diseases and Japanese society for Clinical Microbiology in 2012. The isolates were collected from clinical specimens obtained from well-diagnosed adult patients with respiratory tract infections during the period between January and December in 2012 by three societies. Antimicrobial susceptibility testing was conducted at the central reference laboratory according to the method recommended by Clinical Laboratory Standard Institutes...
June 29, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28666212/time-kill-kinetic-analysis-of-antimicrobial-chemotherapy-based-on-hydrogen-peroxide-photolysis-against-streptococcus-mutans-biofilm
#5
Midori Shirato, Keisuke Nakamura, Taro Kanno, Peter Lingström, Yoshimi Niwano, Ulf Örtengren
A recently developed antimicrobial technique utilizing hydroxyl radicals generated by hydrogen peroxide (H2O2) photolysis represents a promising new therapy for preventing and treating dental caries. The present study compared the antimicrobial time-kill kinetics of H2O2 photolysis, conventional antiseptics, and antimicrobial photodynamic therapy (aPDT) against biofilm-forming Streptococcus mutans (cariogenic bacteria) grown on hydroxyapatite disks. H2O2 photolysis was performed by irradiating the biofilm immersed in 3% H2O2 with 365-nm light-emitting diode (LED) light at an irradiance of 1000mW/cm(2) for up to 1...
June 21, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28662432/cathelicidin-augments-vdr-dependent-anti-leishmanial-immune-response-in-indian-post-kala-azar-dermal-leishmaniasis
#6
Sushmita Das, Abul Hasan Sardar, Kumar Abhishek, Ajay Kumar, Vidya Nand Rabidas, Pradeep Das
OBJECTIVES: Indian Post kala-azar dermal leishmaniasis (PKDL) is the cutaneous aftermath of visceral leishmaniasis (VL) caused by L. donovani. Vitamin D-regulated cationic antimicrobial peptide cathelicidin (hCAP-18/LL-37) has microbicidal and immunomodulatory role against cutaneous infections, but its role in PKDL remains elusive. METHODS: Skin snips and blood-derived monocytes of PKDL patients (n=46), before (BT) and after (AT) chemotherapy, were used for this study...
June 26, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28612456/day-14-bone-marrow-examination-in-the-management-of-acute-myeloid-leukemia
#7
REVIEW
Christopher M Terry, Rory M Shallis, Elihu Estey, Seah H Lim
The National Comprehensive Cancer Network (NCCN) recommends that a repeat bone marrow evaluation is carried out seven to ten days following completion of induction therapy so that if a patient's day 14 bone marrow shows residual blast cell counts of >10%, the patient would proceed early to a second cycle of induction therapy. Although blast cell counts of <5% on day 14 bone marrow is sensitive in predicting remission on day 28, various studies have found that day 14 bone marrow is highly nonspecific because a large proportion of patients with blast cell counts of >5% on day 14 bone marrow would still attain a complete remission of the disease without any further chemotherapy...
June 13, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28584934/management-of-infection-during-chemotherapy-for-acute-leukemia-in-japan-a-nationwide-questionnaire-based-survey-by-the-japan-adult-leukemia-study-group
#8
Shun-Ichi Kimura, Hiroyuki Fujita, Hideaki Kato, Nobuhiro Hiramoto, Naoko Hosono, Tsutomu Takahashi, Kazuyuki Shigeno, Naoko Hatsumi, Hitoshi Minamiguchi, Junichi Miyatake, Hiroshi Handa, Nobu Akiyama, Yoshinobu Kanda, Minoru Yoshida, Hitoshi Kiyoi, Yasushi Miyazaki, Tomoki Naoe
PURPOSE: We performed a nationwide questionnaire-based survey to evaluate the current clinical practices of infectious complications during chemotherapy for acute leukemia in Japan. METHODS: We e-mailed a questionnaire to member institutions of the Japan Adult Leukemia Study Group in September, 2013. The questionnaire consisted of 50 multiple-choice questions covering therapeutic environment, antimicrobial prophylaxis, screening test during neutropenia, empirical therapy for febrile neutropenia, and the use of granulocyte-colony stimulating factor...
June 6, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28567316/spontaneous-nosocomial-pseudomonas-aeruginosa-meningitis-presenting-as-trismus
#9
C J Parr, J Wheeler, A Sharma, C Smith
We describe the case of a 78-year-old female receiving adjuvant postsurgical chemotherapy for colon adenocarcinoma who spontaneously developed nosocomial Pseudomonas meningitis causing severe trismus. The patient was initially admitted for ileus, developing neck stiffness and trismus on the thirteenth day of admission. Cerebrospinal fluid grew pansensitive Pseudomonas aeruginosa. Magnetic resonance imaging of the brain was consistent with bilateral subacute infarcts secondary to meningitis. The patient responded well to 21 days of broad spectrum antimicrobial therapy modified to ceftazidime alone following speciation and sensitivity...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28558641/high-incidence-of-infections-in-hiv-positive-patients-treated-for-lymphoproliferative-disorders
#10
A Calcagno, A Lucchini, D Caracciolo, R Balbiano, M Bracchi, F Sordella, G Gregori, F Lipani, S Audagnotto, M Chiriotto, G Cavaglià, V Ghisetti, G Di Perri, S Bonora
BACKGROUND: Lymphoproliferative disorders are frequently diagnosed in HIV-positive patients and severe infections may occur during antineoplastic treatments: the incidence and impact of such events are not well-characterized. OBJECTIVE: To describe the occurrence and mortality of incident infections in HIV-positive individuals treated for lymphoproliferative disorders. METHODS: A retrospective study in HIV-positive adults with lymphoproliferative disorders (2000-2012) who were hospitalised to receive antineoplastic chemotherapy; as well as antimicrobial prophylaxis with alternate day co-trimoxazole (800/160 mg)...
May 30, 2017: Current HIV Research
https://www.readbyqxmd.com/read/28556623/ultrasonography-driven-combination-antibiotic-therapy-with-tigecycline-significantly-increases-survival-among-patients-with-neutropenic-enterocolitis-following-cytarabine-containing-chemotherapy-for-the-remission-induction-of-acute-myeloid-leukemia
#11
Novella Pugliese, Paola Salvatore, Dora Vita Iula, Maria Rosaria Catania, Federico Chiurazzi, Roberta Della Pepa, Claudio Cerchione, Marta Raimondo, Claudia Giordano, Luigia Simeone, Simona Caruso, Fabrizio Pane, Marco Picardi
Neutropenic enterocolitis (NEC) is an abdominal infection reported primarily in patients with acute myeloid leukemia (AML) following chemotherapy, especially cytarabine, a notable efficacious cytotoxic agent for AML remission. Specific data regarding the impact of different cytarabine schedules and/or antibacterial regimens for NEC are sparse. The aim of the study was to identify the predictors of outcome within 30 days of NEC onset. NEC episodes were retrospectively pinpointed among 440 patients with newly diagnosed AML hospitalized in our Institution, over a 10-year period, for receiving chemotherapy protocols with 100-6000 mg/m(2) daily of cytarabine...
July 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28556195/use-of-nystatin-and-chlorhexidine-in-oral-medicine-properties-indications-and-pitfalls-with-focus-on-geriatric-patients
#12
REVIEW
Elusa Scheibler, Maria Claudia Rosa Garcia, Renata Medina da Silva, Maria Antonia Figueiredo, Fernanda Gonçalves Salum, Karen Cherubini
OBJECTIVES: The aim of this work was to review the scientific literature on the properties, indications and pitfalls related to nystatin and chlorhexidine in oral medicine and also to compare these to other topical antifungal agents, considering the elderly population. BACKGROUND: Nystatin is a polyene antifungal widely used as a topical formulation to treat candidiasis, whereas chlorhexidine is a wide-spectrum antimicrobial, especially used against bacteria, but also effective in treating some fungal infections including those caused by Candida spp...
May 29, 2017: Gerodontology
https://www.readbyqxmd.com/read/28553123/the-hiv-protease-inhibitor-nelfinavir-as-a-novel-therapeutic-approach-for-the-treatment-of-refractory-pediatric-leukemia
#13
Vanessa Meier-Stephenson, Justin Riemer, Aru Narendran
PURPOSE: Refractory pediatric leukemia remains one of the leading causes of death in children. Intensification of current chemotherapy regimens to improve the outcome in these children is often limited by the effects of drug resistance and cumulative toxicity. Hence, the search for newer agents and novel therapeutic approaches are urgently needed to formulate the next-generation early-phase clinical trials for these patients. MATERIALS AND METHODS: A comprehensive library of antimicrobials, including eight HIV protease inhibitors (nelfinavir [NFV], saquinavir, indinavir, ritonavir, amprenavir, atazanavir, lopinavir, and darunavir), was tested against a panel of pediatric leukemia cells by in vitro growth inhibition studies...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28542412/low-rates-of-antibiotic-resistance-and-infectious-mortality-in-a-cohort-of-high-risk-hematology-patients-a-single-center-retrospective-analysis-of-blood-stream-infection
#14
Jason R Conn, Elizabeth M Catchpoole, Naomi Runnegar, Sally J Mapp, Kate A Markey
Febrile neutropenia (FN) is a medical emergency and can represent a life-threatening complication for hematology patients treated with intensive chemotherapy regimens. In clinical practice, the diagnostic yield of blood cultures and other investigations which aim to identify a causative organism or site of infection is low. We have retrospectively examined all blood cultures collected in a "real world" cohort of patients receiving chemotherapy for acute leukemia and patients with aggressive lymphoma treated with Hyper-CVAD/MTX-cytarabine, at a single tertiary center over a five-year period...
2017: PloS One
https://www.readbyqxmd.com/read/28539477/bacterial-colonization-and-succession-in-a-newly-opened-hospital
#15
Simon Lax, Naseer Sangwan, Daniel Smith, Peter Larsen, Kim M Handley, Miles Richardson, Kristina Guyton, Monika Krezalek, Benjamin D Shogan, Jennifer Defazio, Irma Flemming, Baddr Shakhsheer, Stephen Weber, Emily Landon, Sylvia Garcia-Houchins, Jeffrey Siegel, John Alverdy, Rob Knight, Brent Stephens, Jack A Gilbert
The microorganisms that inhabit hospitals may influence patient recovery and outcome, although the complexity and diversity of these bacterial communities can confound our ability to focus on potential pathogens in isolation. To develop a community-level understanding of how microorganisms colonize and move through the hospital environment, we characterized the bacterial dynamics among hospital surfaces, patients, and staff over the course of 1 year as a new hospital became operational. The bacteria in patient rooms, particularly on bedrails, consistently resembled the skin microbiota of the patient occupying the room...
May 24, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28538389/antimicrobial-resistance-patterns-clinical-features-and-risk-factors-for-septic-shock-and-death-of-nosocomial-e-coli-bacteremia-in-adult-patients-with-hematological-disease-a-monocenter-retrospective-study-in-china
#16
Jie Ma, Ning Li, Yajie Liu, Chong Wang, Xiaoyan Liu, Shengmei Chen, Xinsheng Xie, Silin Gan, Meng Wang, Weijie Cao, Fang Wang, Yanfan Liu, Dingming Wan, Ling Sun, Hui Sun
The aim of this retrospective analysis was to evaluate the antimicrobial resistance, clinical features, and risk factors for septic shock and death of nosocomial E coli bacteremia in adult patients in a single hematological center in China. A retrospective case-control study of 157 adult hematological patients with 168 episodes of E coli bacteremia was initiated from April 2012 to July 2015. Antimicrobial susceptibility as well as antimicrobial co-resistance rates were analyzed. Clinical features and outcomes were also studied...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28533857/antibiogram-profile-of-uropathogens-isolated-at-bahir-dar-regional-health-research-laboratory-centre-northwest-ethiopia
#17
Awoke Derbie, Derese Hailu, Daniel Mekonnen, Bayeh Abera, Gashaw Yitayew
INTRODUCTION: Antimicrobial resistance among bacteria that cause urinary tract infection (UTI) has been increasing since the introduction of chemotherapy. This study was aimed to assess the types of isolates from patients with UTI and to determine their current antimicrobial susceptibility profile. METHODS: A record based retrospective analysis of bacterial uropathogens processed in the period of January 2012 to December 2014 at Bahir Dar Health Research Laboratory Center (BRHRLC) was determined...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28529506/roles-of-regulatory-rnas-for-antibiotic-resistance-in-bacteria-and-their-potential-value-as-novel-drug-targets
#18
REVIEW
Petra Dersch, Muna A Khan, Sabrina Mühlen, Boris Görke
The emergence of antibiotic resistance mechanisms among bacterial pathogens increases the demand for novel treatment strategies. Lately, the contribution of non-coding RNAs to antibiotic resistance and their potential value as drug targets became evident. RNA attenuator elements in mRNA leader regions couple expression of resistance genes to the presence of the cognate antibiotic. Trans-encoded small RNAs (sRNAs) modulate antibiotic tolerance by base-pairing with mRNAs encoding functions important for resistance such as metabolic enzymes, drug efflux pumps, or transport proteins...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28526548/at-the-nexus-of-antibiotics-and-metals-the-impact-of-cu-and-zn-on-antibiotic-activity-and-resistance
#19
REVIEW
Keith Poole
Environmental influences on antibiotic activity and resistance can wreak havoc with in vivo antibiotic efficacy and, ultimately, antimicrobial chemotherapy. In nature, bacteria encounter a variety of metal ions, particularly copper (Cu) and zinc (Zn), as contaminants in soil and water, as feed additives in agriculture, as clinically-used antimicrobials, and as components of human antibacterial responses. Importantly, there is a growing body of evidence for Cu/Zn driving antibiotic resistance development in metal-exposed bacteria, owing to metal selection of genetic elements harbouring both metal and antibiotic resistance genes, and metal recruitment of antibiotic resistance mechanisms...
May 16, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28524273/synthesis-and-biological-evaluation-of-novel-peptides-based-on-antimicrobial-peptides-as-potential-agents-with-anti-tumor-and-multidrug-resistance-reversing-activities
#20
Bo Zhang, Wei Shi, Jieming Li, Chen Liao, Limei Yang, Wenlong Huang, Hai Qian
Tumor chemotherapy, which plays an important role in the clinical treatment of metastatic cancer, is limited by low selectivity and drug resistance in clinical application. In our study, we selected antimicrobial peptide BP100 as a lead peptide, designed and synthesized a series of novel antineoplastic peptides through solid-phase synthesis. Amongst them, B4 and B8 showed excellent anti-cancer activity. As revealed by further investigations, these peptides could disrupt the cell membrane, trigger the cytochrome C release into cytoplasm and ultimately lead to apoptosis...
May 19, 2017: Chemical Biology & Drug Design
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