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https://www.readbyqxmd.com/read/28635679/the-role-of-angiogenesis-in-cancer-treatment
#1
REVIEW
Mehdi Rajabi, Shaker A Mousa
A number of anti-angiogenesis drugs have been FDA-approved and are being used in cancer treatment, and a number of other agents are in different stages of clinical development or in preclinical evaluation. However, pharmacologic anti-angiogenesis strategies that arrest tumor progression might not be enough to eradicate tumors. Decreased anti-angiogenesis activity in single mechanism-based anti-angiogenic strategies is due to the redundancy, multiplicity, and development of compensatory mechanism by which blood vessels are remodeled...
June 21, 2017: Biomedicines
https://www.readbyqxmd.com/read/28635668/the-role-of-cccdna-in-hbv-maintenance
#2
REVIEW
Lena Allweiss, Maura Dandri
Chronic hepatitis B virus (HBV) infection continues to be a major health burden worldwide; it can cause various degrees of liver damage and is strongly associated with the development of liver cirrhosis and hepatocellular carcinoma. The molecular mechanisms determining HBV persistence are not fully understood, but these appear to be multifactorial and the unique replication strategy employed by HBV enables its maintenance in infected hepatocytes. Both the stability of the HBV genome, which forms a stable minichromosome, the covalently closed circular DNA (cccDNA) in the hepatocyte nucleus, and the inability of the immune system to resolve chronic HBV infection are believed to be key mechanisms of HBV chronicity...
June 21, 2017: Viruses
https://www.readbyqxmd.com/read/28634713/characterization-and-in-vitro-antibacterial-activity-of-saponin-conjugated-silver-nanoparticles-against-bacteria-that-cause-burn-wound-infection
#3
Anbarasan Muniyan, Kalaiselvi Ravi, Udayamathi Mohan, Rajasekar Panchamoorthy
Saponins are glycosides, which destabilize the membrane by altering the membrane permeability. Thus, the present study was aimed to fabricate the silver nanoparticles (AgNPs) using fenugreek derived saponin (SN) against multi-drug resistant bacteria. This study has optimized the concentration of SN (240 mg/mL) for the synthesis of an effective AgNPs against the test organism Escherichia coli. The SN reduced AgNPs produced a reddish-brown colour and displayed UV absorption at 416 nm. The bio-reducing efficiency of SN (62...
July 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28634531/smallpox-vaccination-an-early-start-of-modern-medicine-in-america
#4
Dan Liebowitz
Smallpox was eradicated by the World Health Organization in 1980. Before its eradication thedisease had a mortality rate upwards of 50% and had a significant impact on society. During theAmerican Revolutionary war, smallpox outbreaks were impeding the American war effort until1777 when George Washington carried out a mass inoculation campaign in the ContinentalArmy that reduced the mortality from smallpox to less than 2%. Inoculation was an early formof vaccination that used live virus from active pustules to induce a milder, but still sometimesdeadly, case of disease...
January 2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/28634121/population-pharmacokinetics-of-tobramycin-inhalation-solution-in-pediatric-patients-with-cystic-fibrosis
#5
Xinting Wang, Stephan Koehne-Voss, SivaNaga S Anumolu, Jing Yu
Tobramycin inhalation solution (TOBI) given as a twice-daily inhalation of nebulized aerosols of 300 mg is approved for the treatment of Pseudomonas aeruginosa infection in cystic fibrosis (CF) patients over 6 years of age. To investigate tobramycin pharmacokinetics (PK) after inhalation of TOBI in pediatric CF patients below 7 years, a population PK approach was used to evaluate tobramycin PK data in patients 6 months to 44 years of age from four clinical studies. The final model used a two-compartmental, first-order absorption model with effect of body mass index on the apparent central volume of distribution...
June 17, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28633889/serious-pneumococcal-disease-outbreak-in-men-exposed-to-metal-fume-detection-response-and-future-prevention-through-pneumococcal-vaccination
#6
Judith Ewing, Lynsey Patterson, Neil Irvine, Lorraine Doherty, Anne Loughrey, Joe Kidney, Carmen Sheppard, Georgia Kapatai, Norman K Fry, Mary Ramsay, Lucy Jessop
Welders and those exposed to metal fume are known to be at increased risk of pneumococcal pneumonia and invasive pneumococcal disease. Current UK guidance recommends that vaccination against pneumococcus be considered in those at risk of frequent or continuous occupational exposure to metal fume, taking into account the exposure control measures in place. We report an outbreak of serious pneumococcal disease that occurred between April and June 2015 among a multinational workforce exposed to metal fumes while working on the refurbishment of an oil rig in a Belfast shipyard...
June 17, 2017: Vaccine
https://www.readbyqxmd.com/read/28633820/green-synthesis-of-ag-cr-ac-nanocomposites-by-azadirachta-indica-and-its-application-for-the-simultaneous-removal-of-binary-mixture-of-dyes-by-ultrasonicated-assisted-adsorption-process-using-response-surface-methodology
#7
Muhammad Saad, Hajira Tahir, Duaa Ali
In the present studies the Ag-Cr-AC nanocomposites were synthesized by Azadirachta indica leaves extract. They were inoculated on the amorphous surface of activated carbon. The surface morphology and structural identification was determined by SEM, FTIR and XRD techniques. The simultaneous removal of binary dye system of Reactive Red and Crystal Violet were performed by ultrasonicated assisted adsorption process utilizing Ag-Cr-AC nanocomposites. Central Composite Design (CCD) having 5 factors of time, pH, amount of Ag-Cr-AC (adsorbent), concentrations of Reactive Red (RR) and Crystal Violet (CV) was employed...
September 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28633645/generation-of-populations-of-antigen-specific-cytotoxic-t-cells-using-dcs-transfected-with-dna-construct-encoding-her2-neu-tumor-antigen-epitopes
#8
Maria Kuznetsova, Julia Lopatnikova, Julia Khantakova, Rinat Maksyutov, Amir Maksyutov, Sergey Sennikov
BACKGROUND: Recent fundamental and clinical studies have confirmed the effectiveness of utilizing the potential of the immune system to remove tumor cells disseminated in a patient's body. Cytotoxic T lymphocytes (CTLs) are considered the main effectors in cell-mediated antitumor immunity. Approaches based on antigen presentation to CTLs by dendritic cells (DCs) are currently being intensively studied, because DCs are more efficient in tumor antigen presentation to T cells through their initiation of strong specific antitumor immune responses than other types of antigen-presenting cells...
June 20, 2017: BMC Immunology
https://www.readbyqxmd.com/read/28633150/hexapod-frame-stacked-transport-for-tibial-infected-nonunions-with-bone-loss-analysis-of-use-of-adjunctive-stability
#9
Joshua K Napora, Douglas S Weinberg, Blake A Eagle, Bram R Kaufman, John K Sontich
OBJECTIVES: The stacked hexapod bone transport technique is an effective treatment for infected tibial nonunions with bone loss. The purpose of this study was to evaluate the patients' risk factors and timing for requiring adjunctive stabilization. DESIGN: Retrospective cohort study. SETTING: Level 1 trauma center. PATIENTS/PARTICIPANTS: Seventy-five patients with infected posttraumatic nonunions of the tibia. INTERVENTION: Resection of nonunion with application of stacked hexapod frame for bone transport...
July 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28633019/edem-function-in-erad-protects-against-chronic-er-proteinopathy-and-age-related-physiological-decline-in-drosophila
#10
Michiko Sekiya, Akiko Maruko-Otake, Stephen Hearn, Yasufumi Sakakibara, Naoki Fujisaki, Emiko Suzuki, Kanae Ando, Koichi M Iijima
The unfolded protein response (UPR), which protects cells against accumulation of misfolded proteins in the ER, is induced in several age-associated degenerative diseases. However, sustained UPR activation has negative effects on cellular functions and may worsen disease symptoms. It remains unknown whether and how UPR components can be utilized to counteract chronic ER proteinopathies. We found that promotion of ER-associated degradation (ERAD) through upregulation of ERAD-enhancing α-mannosidase-like proteins (EDEMs) protected against chronic ER proteinopathy without inducing toxicity in a Drosophila model...
June 19, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28632923/comparing-the-risk-of-hepatitis-b-virus-reactivation-between-direct-acting-antiviral-therapies-and-interferon-based-therapies-for-hepatitis-c
#11
Naoki Kawagishi, Goki Suda, Masahiro Onozawa, Megumi Kimura, Osamu Maehara, Masatsugu Ohara, Takaaki Izumi, Machiko Umemura, Jun Ito, Masato Nakai, Takuya Sho, Mitsuteru Natsuizka, Kenichi Morikawa, Koji Ogawa, Naoya Sakamoto
BACKGROUND: Hepatitis B virus (HBV)-reactivation has been reported during anti-hepatitis C treatment in patients with hepatitis C virus (HCV) and HBV co-infection. We aimed to evaluate the frequency and risk factors of HBV-reactivation during anti-HCV therapy and compared those between interferon (IFN)-free direct-acting antiviral (DAA)-therapies and IFN-based therapies. METHODS: 322 patients with HCV infection receiving anti-HCV therapy were retrospectively screened...
June 20, 2017: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/28632302/sequentially-responsive-shell-stacked-nanoparticles-for-deep-penetration-into-solid-tumors
#12
Jinjin Chen, Jianxun Ding, Yucai Wang, Jianjun Cheng, Shengxiang Ji, Xiuli Zhuang, Xuesi Chen
Nanomedicine to overcome both systemic and tumor tissue barriers ideally should have a transformable size and surface, maintaining a certain size and negative surface charge for prolonged circulation, while reducing to a smaller size and switching to a positive surface charge for efficient penetration to and retention in the interstitial space throughout the tumor tissue. However, the design of such size and charge dual-transformable nanomedicine is rarely reported. Here, the design of a shell-stacked nanoparticle (SNP) is reported, which can undergo remarkable size reduction from about 145 to 40 nm, and surface charge reversal from -7...
June 20, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28631728/acg-and-cag-clinical-guideline-management-of-dyspepsia
#13
Paul M Moayyedi, Brian E Lacy, Christopher N Andrews, Robert A Enns, Colin W Howden, Nimish Vakil
We have updated both the American College of Gastroenterology (ACG) and the Canadian Association of Gastroenterology (CAG) guidelines on dyspepsia in a joint ACG/CAG dyspepsia guideline. We suggest that patients ≥60 years of age presenting with dyspepsia are investigated with upper gastrointestinal endoscopy to exclude organic pathology. This is a conditional recommendation and patients at higher risk of malignancy (such as spending their childhood in a high risk gastric cancer country or having a positive family history) could be offered an endoscopy at a younger age...
June 20, 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28631594/human-picornaviruses-associated-with-neurological-diseases-and-their-neutralization-by-antibodies
#14
Maria Anastasina, Aušra Domanska, Kaia Palm, Sarah Butcher
Picornaviruses are the most commonly encountered infectious agents in mankind. They typically cause mild infections of the gastrointestinal or respiratory tract, but sometimes also invade the central nervous system. There, they can cause severe diseases with long-term sequelae and even be lethal. The most infamous picornavirus is poliovirus, for which significant epidemics of poliomyelitis were reported from the end of the nineteenth century. A successful vaccination campaign has brought poliovirus close to eradication, but neurological diseases caused by other picornaviruses have increasingly been reported since the late 1990s...
June 20, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28630849/a-case-of-chronic-inflammation-of-the-ankle-joint-with-subtle-signs-of-inflammation-a-rare-presentation-of-tuberculosis-ankle
#15
Jeevan Pereira, S Anoop, George Joy Pettah
INTRODUCTION: Tuberculosis (TB) of the ankle is an uncommon presentation of extrapulmonary infection. The early diagnosis of TB arthritis of the ankle is difficult because of the uncommon site, the ability of TB to mimic other disorders and, all too common, lack of awareness of about this infection in ankle joint. CASE REPORT: A 30-year-old male presented with a 1-year history of right ankle pain and swelling. He denied any history of recent infection but had had recurrent ankle pain that had been treated accordingly...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28630559/drug-policy-and-indigenous-peoples
#16
Julian Burger, Mary Kapron
This paper identifies the principal concerns of indigenous peoples with regard to current international treaties on certain psychoactive substances and policies to control and eradicate their production, trafficking, and sale. Indigenous peoples have a specific interest in the issue since their traditional lands have become integrated over time into the large-scale production of coca, opium poppy, and cannabis crops, in response to high demand from the American and European markets, among others. As a consequence, indigenous peoples are persecuted because of their traditional use of these and other plant-based narcotics and hallucinogens...
June 2017: Health and Human Rights
https://www.readbyqxmd.com/read/28630462/identification-and-molecular-characterization-of-non-polio-enteroviruses-from-children-with-acute-flaccid-paralysis-in-west-africa-2013-2014
#17
Maria D Fernandez-Garcia, Ousmane Kebe, Aichatou D Fall, Kader Ndiaye
Besides polioviruses, non-polio enteroviruses (NPEVs) may also be associated with acute flaccid paralysis (AFP). Because poliomyelitis is on the verge of eradication, more attention should be paid to study NPEVs from non-polio AFP cases and their epidemic patterns. In West African countries the epidemiology of NPEVs remains largely unexplored. We investigated the genetic diversity, frequency, circulation patterns, and molecular epidemiology of NPEVs in seven West African countries by analyzing retrospectively a panel of 3195 stool samples from children with AFP collected through routine poliomyelitis surveillance activities between 2013 and 2014...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28630189/in-vitro-activity-of-delafloxacin-and-microbiological-response-against-fluoroquinolone-susceptible-and-non-susceptible-s-aureus-isolates-from-two-phase-3-studies-of-acute-bacterial-skin-and-skin-structure-infections-absssi
#18
S McCurdy, L Lawrence, M Quintas, L Woosley, R Flamm, C Tseng, S Cammarata
Delafloxacin is an investigational anionic fluoroquinolone antibiotic with broad spectrum in vitro activity, including Gram-positive organisms, Gram-negative organisms, atypical organisms, and anaerobes. The in vitro activity of delafloxacin and percent microbiological response in subjects infected with fluoroquinolone susceptible and non-susceptible S. aureus isolates was determined from two global Phase 3 studies of delafloxacin versus vancomycin plus aztreonam in ABSSSI. Patients were enrolled in 23 countries predominately in the US but also Eastern Europe, South America and Asia...
June 19, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28630188/identification-of-a-novel-antibacterial-compound-1-2-4-dichlorophenethyl-amino-3-phenoxypropan-2-ol-active-against-persisters-of-pseudomonas-aeruginosa
#19
Veerle Liebens, Valerie Defraine, Wouter Knapen, Toon Swings, Serge Beullens, Romu Corbau, Arnaud Marchand, Patrick Chaltin, Maarten Fauvart, Jan Michiels
Antibiotics typically fail to completely eradicate a bacterial population, leaving a small fraction of transiently antibiotic-tolerant persister cells intact. Persisters are therefore seen as a major cause of treatment failure and greatly contribute to the recalcitrant nature of chronic infections. The current report is focused on Pseudomonas aeruginosa, a Gram-negative pathogen belonging to the notorious ESKAPE group and, due to an increasing resistance against most conventional antibiotics, posing a serious threat to human health...
June 19, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28630040/endoplasmic-reticulum-associated-degradation-of-the-renal-potassium-channel-romk-leads-to-type-ii-bartter-syndrome
#20
Brighid M O'Donnell, Timothy D Mackie, Arohan R Subramanya, Jeffrey L Brodsky
Type II Bartter syndrome is caused by mutations in the Renal Outer Medullary Potassium (ROMK) channel but the molecular mechanisms underlying this disease are poorly defined. To rapidly screen for ROMK function, we developed a yeast expression system and discovered that yeast cells lacking endogenous potassium channels could be rescued by WT ROMK but not by ROMK proteins containing one of four Bartter mutations. We also found that the mutant proteins were significantly less stable than WT ROMK. However, their degradation was slowed in the presence of a proteasome inhibitor or when yeast cells contained mutations in the CDC48 or SSA1 gene, which is required for endoplasmic reticulum (ER)-associated degradation (ERAD)...
June 19, 2017: Journal of Biological Chemistry
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