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https://www.readbyqxmd.com/read/28650175/bioactive-peptide-natural-products-as-lead-structures-for-medicinal-use
#1
Tam Dang, Roderich D Süssmuth
The need for new drugs for the treatment of various diseases is enormous. From the previous century until the present, numerous peptide and peptide-derived natural products have been isolated from bacteria and fungi. Hence, microorganisms play a pivotal role as sources for novel drugs with an emphasis on anti-infective agents. Various disciplines from biology, chemistry, and medicine are involved in early stages of the search for peptide natural products including taxonomy, microbiology, bioanalytics, bioinformatics, and medicinal chemistry...
June 26, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28643291/-more-than-expectorant-new-scientific-data-on-ambroxol-in-the-context-of-the-treatment-of-bronchopulmonary-diseases
#2
Manuel Plomer, Justus de Zeeuw
BACKGROUND: Ambroxol has been established for decades in the treatment of acute and chronic respiratory diseases. In 2015, the European Medicines Agency reassessed the clinical benefit-risk ratio of the drug. OBJECTIVE: What new scientific data on ambroxol, which are relevant to the treatment of bronchopulmonary diseases, are available? METHOD: The review is based on a systematic literature research in medline with the search term "ambroxol" during the publication period 2006-2015...
June 2017: MMW Fortschritte der Medizin
https://www.readbyqxmd.com/read/28643099/-beyond-antibiotic-therapy-future-antiinfective-strategies-update-2017
#3
REVIEW
D Vogt, S Sperling, T Tkhilaishvili, A Trampuz, J-P Pirnay, C Willy
BACKGROUND: The key elements in the therapy of surgical site infections (SSI) are surgical debridement and local and systemic antibiotic therapy; however, due to increasing antibiotic resistance, the development of additional therapeutic measures is of great interest for future trauma and orthopedic surgery. METHOD: Against the background of our own experimental and clinical experiences and on the basis of the current literature, possible future anti-infective strategies were elaborated...
June 22, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28643097/-anti-infective-strategies-in-trauma-surgery-part%C3%A2-2
#4
EDITORIAL
A Trampuz, C Willy
No abstract text is available yet for this article.
June 22, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28643095/-local-antibiotic-therapy
#5
REVIEW
Klaus-Dieter Kühn, Nora Renz, Andrej Trampuz
The treatment of superficial wound infections with local antibiotics is considered to be problematic as it is accompanied by an increased risk of resistance development and ineffectiveness in deeper regions. On the contrary, the local application of antibiotics is useful in arthroplasty and necessary if implants are utilized. The reason for this is the prevention of a rapid biofilm formation on foreign implants and a resulting infection may remain undiscovered until it becomes chronic. Apart from exogenous material, necrotic tissue (e...
June 22, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28637753/structural-mimicry-of-the-dengue-virus-envelope-glycoprotein-revealed-by-the-crystallographic-study-of-an-idiotype-anti-idiotype-fab-complex
#6
Yee Hwa Wong, Boon Chong Goh, She Yah Lim, En Wei Teo, Angeline P C Lim, Pete C Dedon, Brendon J Hanson, Paul A MacAry, Julien Lescar
A detailed understanding of the fine specificity of serotype-specific human antibodies is vital for the development and evaluation of new vaccines for pathogenic Flaviviruses such as Dengue virus (DENV) and Zika virus. In this study, we thoroughly characterize the structural footprint of an anti-idiotype antibody (E1) specific for a potent, fully human DENV serotype 1-specific antibody termed HM14c10, derived from a recovered patient. The crystal structure at a resolution of 2.5 Å of a complex between the Fab fragments of E1 and HM14c10 provides the first detailed molecular comparison of an anti-idiotype paratope specific for a human antibody with its analogous epitope- a discontinuous quaternary structure located at the surface of the viral particle that spans adjacent envelope (E) proteins...
June 21, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28636890/memory-t-cells-a-helpful-guard-for-allogeneic-hematopoietic-stem-cell-transplantation-without-causing-graft-versus-host-disease
#7
REVIEW
Wei Huang, Nelson J Chao
Graft-versus-host disease (GVHD) is a major complication of allogeneic hematopoietic stem cell transplantation (AHSCT) and the major cause of nonrelapse morbidity and mortality of AHSCT. In AHSCT, donor T cells facilitate hematopoietic stem cell (HSC) engraftment, contribute to anti-infection immunity, and mediate graft-versus-leukemia (GVL) responses. However, activated alloreactive T cells also attack recipient cells in vital organs, leading to GVHD. Different T-cell subsets, including naïve T (TN) cells, memory T (TM) cells, and regulatory T (Treg) cells mediate different forms of GVHD and GVL; TN cells mediate severe GVHD, whereas TM cells do not cause GVHD, but preserve T-cell function including GVL...
June 13, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28636781/discovery-of-two-bombinin-peptides-with-antimicrobial-and-anticancer-activities-from-the-skin-secretion-of-oriental-fire-bellied-toad-bombina-orientalis
#8
Chang Zhou, Zhengming Wang, Xin Peng, Yao Liu, Yangjun Lin, Zhe Zhang, Yuling Qiu, Meihua Jin, Ran Wang, Dexin Kong
Amphibian skin secretions are known to contain numerous peptides with a large array of biological activities. Bombinins are a group of amphibian derived peptides with broad spectrum antimicrobial activities that have been only identified from the ancient toad species, Bombina. In this study, we described the identification and characterization of a novel bombinin precursor which encoded a bombinin like peptide (BLP-7) and a novel bombinin H type peptide (named as Bombinin H-BO) from the skin secretion of Oriental fire-bellied toad, Bombina orientalis...
June 21, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28636560/lipocalin-2-regulates-intestine-bacterial-survival-by-interplaying-with-siderophore-in-a-weaned-piglet-model-of-escherichia-coli-infection
#9
Bing-Xiu Guo, Qian-Qian Wang, Jia-Hui Li, Zhen-Shun Gan, Xiao-Feng Zhang, Yi-Zhen Wang, Hua-Hua Du
Iron is an essential nutrient that facilitates cell proliferation and growth, which plays a pivotal role in modulating the battle for survival between mammalian hosts and their pathogens. Pathogenic bacteria secrete siderophores to acquire iron from the host. However, lipocalin 2 (Lcn2), a siderophore-binding antimicrobial protein, binds to siderophores to prevent bacterial uptake of iron, which is critical for the control of systemic infection with Escherichia coli (E. coli). But few studies focus on the anti-infective response of Lcn2 in the intestines by inhibiting bacterial proliferation based on microbial iron metabolism...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28636418/dxs-as-a-target-for-structure-based-drug-design
#10
Robin Matthias Gierse, Eswar Redeem, Eleonora Diamanti, Carsten Wrenger, Matthew R Groves, Anna Kh Hirsch
In this review, we analyze the enzyme DXS, the first and rate-limiting protein in the methylerythritol 4-phosphate pathway. This pathway was discovered in 1996 and is one of two known metabolic pathways for the biosynthesis of the universal building blocks for isoprenoids. It promises to offer new targets for the development of anti-infectives against the human pathogens, malaria or tuberculosis. We mapped the sequence conservation of 1-deoxy-xylulose-5-phosphate synthase on the protein structure and analyzed it in comparison with previously identified druggable pockets...
June 21, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/28627939/off-label-prescribing-for-children-with-chronic-diseases-in-nigeria-findings-and-implications
#11
Kazeem Adeola Oshikoya, Ibrahim Adekunle Oreagba, Brian Godman, Joseph Fadare, Samuel Orubu, Amos Massele, Idowu Odunayo Senbanjo
BACKGROUND AND AIMS: Prescribing medicines in an off-label manner for children with chronic conditions is sparsely documented, even more so among developing countries. This needs addressing. The objective was to investigate the extent of this prescribing among children with epilepsy, asthma, and sickle cell anaemia in Nigeria. METHODS: Prescriptions for children ≤16 years documented in their case files that attended paediatric clinics in Lagos, Nigeria, for these three conditions between January and October 2015, were reviewed retrospectively to extract data on the medicines prescribed...
June 19, 2017: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/28625248/-core-knowledge-and-skill-based-approach-to-subspecialty-construction-in-critical-intensive-care-medicine-with-distinct-chinese-peculiarity
#12
Lijun Wang, Fang Tian
With the rapid development of critical care medicine (CCM) in China, there are increases in the number of intensive care units (ICUs), the scale of one center ICU and the team. Subspecialty construction of CCM is of great concerns for personnel training as well as discipline development, and is currently one of the urgent problems that need to be resolved. Experience of CCM subspecialty construction from Europe and the United States is lacking and it is necessary to propose some opinions on innovation to construct CCM subspecialties with Chinese characteristics...
June 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28610634/medication-related-visits-in-a-pediatric-emergency-department-an-8-years-retrospective-analysis
#13
Cristiano Rosafio, Serena Paioli, Cinzia Del Giovane, Valentina Cenciarelli, Nilla Viani, Paolo Bertolani, Lorenzo Iughetti
BACKGROUND: There are limited data on the characterization of medication-related visits (MRVs) to the emergency department (ED) in pediatric patients in Italy. We have estimated the frequency, severity, and classification of MRVs to the ED in pediatric patients. METHODS: We retrospectively analyzed data for children seeking medical evaluation for a MRV over an 8 years period. A medication-related ED visit was identified by using a random pharmacist assessment, emergency physician assessment, and in case of conflicting events, by a third investigators random assessment...
June 13, 2017: Italian Journal of Pediatrics
https://www.readbyqxmd.com/read/28608289/-antibiotic-stewardship-a%C3%A2-programmatic-approach-to-improved-antimicrobial-management
#14
REVIEW
Martin Müller, Patrick Lehmann, Christian Willy
Due to the increasing selection and prevalence of multidrug-resistant gram-negative bacteria and the insufficient development of novel antibiotics, the responsible and prudent use of the available antimicrobial drugs is of major importance. In Germany the rational use of anti-infectives considering the local antimicrobial resistance situation is defined in the infection protection act of 2011. An important tool to follow legal regulations and to improve the treatment of bacterial infections is the antimicrobial stewardship (AMS) concept...
June 12, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28606241/-effects-of-recombinant-fusion-protein-interleukin-18-on-expression-of-immune-inflammatory-factors-in-mice-infected-with-staphylococcus-aureus
#15
Chen Chen, Qiang Chen, Lan Li, Xiao-Jun Yu, Jiang-Wei Ke, Mei-Juan He, Hong-Ping Zhou, Wen-Ping Yang, Wen-Xing Wang
OBJECTIVE: To observe the effects of recombinant fusion protein interleukin (IL)-18 on the expression of immune-inflammatory factors in the mice infected with Staphylococcus aureus (SA), and to investigate the mechanism of action of IL-18 in defense of SA infection in vivo. METHODS: A total of 40 specific pathogen-free female BLAB/c mice were randomly divided into four groups: control, SA infection, immunized, and intervention. A mouse model of SA infection was established by nasal inoculation with SA liquid...
June 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28600130/highly-antibacterial-polypeptide-based-amphiphilic-copolymers-as-multifunctional-non-viral-vectors-for-enhanced-intracellular-sirna-delivery-and-anti-infection
#16
Li Zhou, Yuewei Xi, Meng Yu, Min Wang, Yi Guo, Peng Li, Peter X Ma, Bo Lei
For next-generation regenerative medicine and cancer therapy applications, the development of multifunctional biodegradable biomaterials with good antibacterial activity, biocompatibility and gene delivery capability is showing increased interests. As a natural cationic polypeptide, poly(ε-L-lysine) (EPL) has been as attractive antibacterial agent and non-viral gene vectors, however, its gene therapy is still limited probably due to the cytotoxicity, low stability in physiological environment and poor transfection efficiency...
June 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28589215/utilities-of-scrotal-flap-for-reconstruction-of-penile-skin-defects-after-severe-burn-injury
#17
REVIEW
Le Guo, Minghua Zhang, Jizhang Zeng, Pengfei Liang, Pihong Zhang, Xiaoyuan Huang
OBJECTIVE: In the present study, we aimed to present our experience of an effective two-stage surgical approach using scrotal skin flap for patients with penile skin defects following severe burn injury. MATERIALS AND METHODS: A total of 17 patients with penile skin defects underwent scheduled two-stage reconstruction using scrotal skin flap from January 2004 to October 2016. Patients, who were selected as eligible candidates for scrotal flap, exhibited a wide range of indications, including iatrogenic injuries (e...
June 6, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28585518/the-synergistic-effect-of-micro-nano-structured-and-cu-2-doped-hydroxyapatite-particles-to-promote-osteoblast-viability-and-antibacterial-activity
#18
Feng Shi, Yumei Liu, Wei Zhi, Dongqin Xiao, Hongyu Li, Ke Duan, Shuxin Qu, Jie Weng
Microstructure and chemical constitution are important factors affecting the biological activity of biomaterials. This study aimed to fabricate hydroxyapatite (HAp) particles with both micro/nanohybrid structure and Cu(2+) doping to promote osteogenic differentiation and antibacterial property. In the presence of inositol hexakisphosphate (IP6), micro/nano-structured and Cu(2+)-doped HAp (HAp-IP6-Cu) microspheres were successfully fabricated via hydrothermal method. Morphological observation showed that HAp-IP6-Cu microspheres with a diameter of 3...
June 6, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28580201/bibliometric-assessment-of-the-global-scientific-production-of-nitazoxanide
#19
Alfonso J Rodriguez-Morales, Dayron F Martinez-Pulgarin, Marcela Muñoz-Urbano, Daniela Gómez-Suta, Jorge A Sánchez-Duque, Jorge E Machado-Alba
INTRODUCTION: Nitazoxanide is a member of a new class of drug, thiazolides, and it was discovered in 1984 with antimicrobial activity effect against anaerobic bacteria, Hepatitis virus, protozoa, and helminths. METHODS: A bibliometric study on four databases (1984-2016) - Medline, Scopus, LILACS, and SciELO - characterizing the global scientific production of nitazoxanide. We determined the quantity, quality (number of citations), and types of studies developed by each country, characterizing them by years, international cooperation, development, place of publication, authors (with its H-index), and groups with higher impact...
May 1, 2017: Curēus
https://www.readbyqxmd.com/read/28578742/applicability-of-plant-based-products-in-the-treatment-of-trypanosoma-cruzi-and-trypanosoma-brucei-infections-a-systematic-review-of-preclinical-in-vivo-evidence
#20
Rodrigo M Pereira, Glícia M Z Greco, Andreia M Moreira, Pablo F Chagas, Ivo S Caldas, Reggiani V Gonçalves, Rômulo D Novaes
Chagas disease and sleeping sickness are neglected tropical diseases closely related to poverty, for which the development of plant-derived treatments has not been a promising prospect. Thus, we systematicaly review the preclinical in vivo evidence on the applicability of plant-based products in the treatment of Trypanosoma cruzi and Trypanosoma brucei infections. Characteristics such as disease models, treatments, toxicological safety and methodological bias were analysed. We recovered 66 full text articles from 16 countries investigating 91 plant species...
June 5, 2017: Parasitology
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