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https://www.readbyqxmd.com/read/28532009/exploring-recent-developments-to-improve-antioxidant-anti-inflammatory-and-antimicrobial-efficacy-of-curcumin-a-review-of-new-trends-and-future-perspectives
#1
REVIEW
Zahid Hussain, Hnin Ei Thu, Muhammad Wahab Amjad, Fahad Hussain, Tarek A Ahmed, Shahzeb Khan
Curcumin derivatives have been well-documented due to their natural antioxidant, antimicrobial and anti-inflammatory activities. Curcuminoids have also gained widespread recognition due to their wide range of other activities which include anti-infective, anti-mutagenic, anticancer, anti-coagulant, antiarthrititc, and wound healing potential. Despite of having a wide range of activities, the inherent physicochemical characteristics (poor water solubility, low bioavailability, chemical instability, photodegradation, rapid metabolism and short half-life) of curcumin derivatives limit their pharmaceutical significance...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28527264/-adverse-drug-reactions-in-neonates-hospitalized-in-neonatal-intensive-care-units-in-barranquilla-colombia
#2
Roxana De Las Salas, Daniela Díaz-Agudelo
INTRODUCTION: The appearance of adverse drug reactions in neonates is an important issue due to the lack of drug safety data. OBJECTIVE: To identify the behavior of adverse drug reactions (ADR) in hospitalized neonates at two intensive care units in Barranquilla, Colombia. MATERIALS AND METHODS: We conducted a cross-sectional prospective descriptive study based on patientcentered intensive pharmacosurveillance. We followed up and monitored the appearance of ADRs for six months...
April 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
#3
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/28522372/effective-antimicrobial-activity-of-a-peptide-mutant-cbf-14-2-against-penicillin-resistant-bacteria-based-on-its-unnatural-amino-acids
#4
Wei Kang, Hanhan Liu, Lingman Ma, Mengxiao Wang, Shanshan Wei, Pengbo Sun, Meiling Jiang, Min Guo, Changlin Zhou, Jie Dou
Broad spectrum activities, a unique mode of actions and rare resistant variants make antimicrobial peptide (AMP) a potential alternative to antibiotics. However, AMPs still have limitations in clinical development due to their physiological stability, toxicity and manufacturing costs. Cbf-14, derived from cathelicidin-BF has been proven to be effective against drug-resistant bacteria. Herein, a series of Cbf-14 mutants were designed to overcome these limitations. Design strategies included substitutions of lysine (Lys) or leucine (Leu) with similar residues such as ornithine (Orn) and norleucine (Ile), which are unnatural amino acids, to generate AMPs with enhanced therapeutic potential...
May 15, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28516432/measurement-of-piperacillin-plasma-concentrations-in-cancer-patients-with-suspected-infection
#5
Tobias Rachow, Verena Schlüter, Sibylle Bremer-Streck, Udo Lindig, Sebastian Scholl, Peter Schlattmann, Michael Kiehntopf, Andreas Hochhaus, Marie von Lilienfeld-Toal
BACKGROUND: Piperacillin (PIP) in combination with tazobactam is commonly used for anti-infective treatment in cancer patients. PIP exerts a time-dependent killing. Thus, the maintenance of plasma concentrations above a pre-defined target concentration for a pre-defined time may be relevant for optimal efficacy. It is assumed that PIP-plasma concentrations above the clinical breakpoint of the target pathogen [Pseudomonas aeruginosa, clinical breakpoint at minimal inhibitory concentration (MIC) 16 mg/L] should be reached for 100% of the dosing interval or >4xMIC (64 mg/L) for 50% of the dosing interval...
May 17, 2017: Infection
https://www.readbyqxmd.com/read/28513746/structure-functionality-relationship-and-pharmacological-profiles-of-pseudomonas-aeruginosa-alkylquinolone-quorum-sensing-modulators
#6
Ahmed A M Kamal, Lucia Petrera, Jens Eberhard, Rolf W Hartmann
An important paradigm in anti-infective research is the antivirulence concept. Pathoblockers are compounds which disarm bacteria of their arsenal of virulence factors. PqsR is a transcriptional regulator controlling the production of such factors in Pseudomonas aeruginosa, most prominently pyocyanin. In this work, a series of tool compounds based on the structure of the natural ligand 2-heptyl-4-quinolone (HHQ) were used for probing the structure-functionality relationship. Four different profiles are identified namely agonists, antagonists, inverse agonists and biphasic modulators...
May 17, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28504927/mechanisms-of-quinolone-action-and-resistance-where-do-we-stand
#7
Susana Correia, Patrícia Poeta, Michel Hébraud, José Luis Capelo, Gilberto Igrejas
Quinolone antibiotics represent one of the most important classes of anti-infective agents and, although still clinically valuable, their use has been compromised by the increasing emergence of resistant strains, which has become a prevalent clinical problem. Quinolones act by inhibiting the activity of DNA gyrase and topoisomerase IV - two essential bacterial enzymes that modulate the chromosomal supercoiling required for critical nucleic acid processes. The acquisition of quinolone resistance is recognized to be multifactorial and complex...
May 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28497260/a-physiologically-based-pharmacokinetic-perspective-on-the-clinical-utility-of-albumin-based-dose-adjustments-in-critically-ill-patients
#8
Huybrecht T'jollyn, An Vermeulen, Jan Van Bocxlaer, Pieter Colin
INTRODUCTION: In hypo-albuminemia, the extent of albumin binding of a drug decreases. The resulting change in plasma protein binding only rarely leads to clinically relevant changes in unbound drug exposure. Nevertheless, in the critically ill, a tendency to increase dosing of anti-infective therapy is seen in patients experiencing hypo-albuminemia. To reconcile basic pharmacological principles with current clinical practice, this work presents a pharmacologically-based pharmacokinetic simulation study to emphasize the (lack of) effect of altered plasma protein binding on a drug's concentration-time profile and associated pharmacokinetic parameters...
May 11, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28495626/promising-biocidal-activity-of-thymol-loaded-chitosan-silver-nanoparticles-t-c-agnps-as-anti-infective-agents-against-perilous-pathogens
#9
H M Manukumar, S Umesha, H N Naveen Kumar
The advent of biodegradable polymer-encapsulated drug nanoparticles has made an exciting area of drug delivery research. The present study investigated novel and simple route for synthesis of thymol loaded chitosan silver nanoparticles (T-C@AgNPs) using chitosan and thymol as reducing, capping agent respectively to understand the therapeutic efficacy. The UV-vis spectroscopy, DLS, FT-IR, SEM, EDS, XRD used for characterization and radical scavenging activity, anti-microbial and biocompatibility was taken to ascertain an efficacy of novel T-C@AgNPs...
May 8, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28493331/pilus-biogenesis-of-gram-positive-bacteria-roles-of-sortases-and-implications-for-assembly
#10
REVIEW
Baldeep Khare, Sthanam Vl Narayana
Successful adherence, colonization, and survival of Gram-positive bacteria require surface proteins, and multi-protein assemblies called pili. These surface appendages are attractive pharmacotherapeutic targets and understanding their assembly mechanisms is essential for identifying a new class of 'anti-infectives' that do not elicit microbial resistance. Molecular details of the Gram-negative pilus assembly are available in-depth, but the Gram-positive pilus biogenesis is still an emerging field and investigations continue to reveal novel insights into this process...
May 10, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28484444/leaf-extracts-of-mangifera-indica-l-inhibit-quorum-sensing-regulated-production-of-virulence-factors-and-biofilm-in-test-bacteria
#11
Fohad M Husain, Iqbal Ahmad, Abdullah S Al-Thubiani, Hussein H Abulreesh, Ibrahim M AlHazza, Farrukh Aqil
Quorum sensing (QS) is a global gene regulatory mechanism in bacteria for various traits including virulence factors. Disabling QS system with anti-infective agent is considered as a potential strategy to prevent bacterial infection. Mangifera indica L. (mango) has been shown to possess various biological activities including anti-QS. This study investigates the efficacy of leaf extracts on QS-regulated virulence factors and biofilm formation in Gram negative pathogens. Mango leaf (ML) extract was tested for QS inhibition and QS-regulated virulence factors using various indicator strains...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28482392/-three-cases-with-familial-mediterranean-fever-misdiagnosed-as-juvenile-idiopathic-arthritis
#12
J Li, Y Zhang, W Wang, L Q Zhong, H M Song
Objective: To explore the key points of diagnosis and treatment of familial Mediterranean fever(FMF). Method: The clinical data of 3 cases with FMF misdiagnosed as Juvenile idiopathic arthritis(JIA)seen from January 2014 to June 2016 in Peking Union Medical College Hospital were retrospectively collected. The clinical manifestations, gene mutation characteristics, treatment and prognosis were also evaluated. Result: Two cases were male and 1 was female. The mean age of onset was 17 months (3 months to 36 months), while the average age of diagnosis was 6 years and 8 months (24 months to 11 years)...
May 4, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28480889/signalome-wide-assessment-of-host-cell-response-to-hepatitis-c-virus
#13
Gholamreza Haqshenas, Jianmin Wu, Kaylene J Simpson, Roger J Daly, Hans J Netter, Thomas F Baumert, Christian Doerig
Host cell signalling during infection with intracellular pathogens remains poorly understood. Here we report on the use of antibody microarray technology to detect variations in the expression levels and phosphorylation status of host cell signalling proteins during hepatitis C virus (HCV) replication. Following transfection with HCV RNA, the JNK and NF-κB pathways are suppressed, while the JAK/STAT5 pathway is activated; furthermore, components of the apoptosis and cell cycle control machineries are affected in the expression and/or phosphorylation status...
May 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28480779/use-of-human-immunoglobulins-as-an-anti-infective-treatment-the-experience-so-far-and-their-possible-re-emerging-role
#14
Jordi Bozzo, Juan I Jorquera
Pooled human immunoglobulins (IGs) are prepared from plasma obtained from healthy donors as a concentrated antibody-containing solution. In addition, high-titer IGs (hyperimmune) against a specific pathogen can be obtained from vaccinated or convalescing donors. Currently, IGs can be used for the treatment of a variety of infections for which no specific therapy exists or that remain difficult to treat. Moreover, the recent pathogen outbreaks for which there is no approved treatment have renewed attention to the role of convalescent plasma and IGs...
May 15, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/28466551/functionality-testing-of-stem-cell-grafts-to-predict-infectious-complications-after-allogeneic-hematopoietic-stem-cell-transplantation
#15
J Nilsson, I Granrot, J Mattsson, B Omazic, M Uhlin, S Thunberg
BACKGROUND AND OBJECTIVES: Allogeneic hematopoietic stem cell transplantation (HSCT) is a routine clinical procedure performed to treat patients with haematological malignancies, primary immune deficiencies or metabolic disorders. Infections during lymphopenia after allogeneic HSCT are associated with high mortality and morbidity. Typical infectious agents are Epstein-Barr virus, cytomegalovirus, herpes simplex virus, varicella-zoster virus and fungi. The study aim was to evaluate whether measurement of the responses of antigen-specific T-cells, recognizing infectious pathogens would correlate to protective functions in the stem cell recipient post-transplant...
May 2, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28465626/synthesis-and-biological-evaluation-of-indole-core-based-derivatives-with-potent-antibacterial-activity-against-resistant-bacterial-pathogens
#16
Wei Hong, Jingyang Li, Zhe Chang, Xiaoli Tan, Hao Yang, Yifan Ouyang, Yanhui Yang, Sargit Kaur, Ian C Paterson, Yun Fong Ngeow, Hao Wang
The emergence of drug resistance in bacterial pathogens is a growing clinical problem that poses difficult challenges in patient management. To exacerbate this problem, there is currently a serious lack of antibacterial agents that are designed to target extremely drug-resistant bacterial strains. Here we describe the design, synthesis and antibacterial testing of a series of 40 novel indole core derivatives, which are predicated by molecular modeling to be potential glycosyltransferase inhibitors. Twenty of these derivatives were found to show in vitro inhibition of Gram-positive bacteria, including methicillin-resistant Staphylococcus aureus...
May 3, 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28464847/glycosaminoglycans-are-involved-in-bacterial-adherence-to-lung-cells
#17
Olga Rajas, Luis M Quirós, Mara Ortega, Emma Vazquez-Espinosa, Jesús Merayo-Lloves, Fernando Vazquez, Beatriz García
BACKGROUND: Lower respiratory infections are among the top ten causes of death worldwide. Since pathogen to cell adhesion is a crucial step in the infection progress, blocking the interaction between eukaryotic receptors and bacterial ligands may enable the pathogenesis process to be stopped. Cell surface glycosaminoglycans (GAGs) are known to be mediators in the adhesion of diverse bacteria to different cell types, making it of interest to examine their involvement in the attachment of various pathogenic bacteria to lung cells, including epithelial cells and fibroblasts...
May 2, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28464777/the-endocytic-transport-as-a-drug-target-in-infectious-diseases
#18
Amandio Vieira, Shaun P Wong
Components of the extracellular environment can be transported into cells by molecular mechanisms collectively termed endocytosis. Cells typically use a multitude of different internalization pathways. These endocytic transport pathways have a wide range of implications for physiological regulation as well as pathological processes. Many infectious diseases, for example, involve internalization of the pathogen into the cell as part of the infection process. Selective interference with the endocytic transport of a microbe, thus, represents a therapeutic strategy that may prevent infections or decrease the rate of their progression...
May 2, 2017: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/28459413/-advance-on-human-umbilical-cord-mesenchymal-stem-cells-for-treatment-of-ali-in-severe-burns
#19
Yu Wang, Xiaohong Hu
Severe burn is often accompanied by multiple organ damage. Acute lung injury (ALI) is one of the most common complications, and often occurs in the early stage of severe burns. If it is not treated in time, it will progress to acute respiratory distress syndrome (ARDS), which will be a serious threat to the lives of patients. At present, the treatment of ALI in patients with severe burn is still remained in some common ways, such as the liquid resuscitation, the primary wound treatment, ventilation support, and anti-infection...
January 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28459407/-effect-of-bronchoalveolar-lavage-with-fiberoptic-bronchoscopy-combined-with-vibration-sputum-drainage-on-mechanically-ventilated-patients-with-severe-pneumonia-a-prospective-randomized-controlled-trial-in-286-patients
#20
Zeya Shi, Yuelan Qin, Yimin Zhu, Xiaoji Pan, Xu Zhou, Yuting Tan, Yanhui Liu
OBJECTIVE: To investigate the curative effect of bronchoalveolar lavage with fiberoptic bronchoscopy combined with vibration sputum drainage in the treatment of severe pneumonia patients undergoing mechanical ventilation (MV). METHODS: A prospective randomized controlled trial was conducted. 286 severe pneumonia patients undergoing MV admitted to intensive care unit (ICU) of Hunan People's Hospital from January 2014 to July 2016 were enrolled, and they were divided into control group and observation group according to random number table, with 143 patients in each group...
January 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
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