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https://www.readbyqxmd.com/read/28431329/stealth-recombinant-human-serum-albumin-nanoparticles-conjugating-5-fluorouracil-augmented-drug-delivery-and-cytotoxicity-in-human-colon-cancer-ht-29-cells
#1
Ankita Sharma, Amanpreet Kaur, Upendra Kumar Jain, Ramesh Chandra, Jitender Madan
BACKGROUND AND OBJECTIVE: 5-Fluorouracil (5-FU) is a first-line chemotherapeutic drug in colorectal cancer. However, intravenous administration of 5-FU at the dose of 7-12mg/kg exhibits curbs like short half-life (20min) and toxic side-effects on bone marrow cells. Therefore, in present investigation, 5-FU was conjugated to poly (ethylene glycol) anchored recombinant human serum albumin nanoparticles (5-FU-rHSA-PEG-NPs) to improve the pharmacokinetic and therapeutic profiles. METHODS AND RESULTS: The mean particle size of 5-FU-rHSA-NPs was measured to be 44...
April 12, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28431328/effects-of-quantum-dots-on-the-ros-amount-of-liver-cancer-stem-cells
#2
Kunmeng Li, Chunhui Xia, Baiqi Wang, Hetao Chen, Tong Wang, Qian He, Hailong Cao, Yu Wang
Liver cancer (LC) is a serious disease that threatens human lives. LC has a high recurrence rate and poor prognosis. LC stem cells (LCSCs) play critical roles in these processes. However, the mechanism remains unclear. Reactive oxygen species (ROS) can be used to determine cell apoptosis and proliferation. However, studies of the effects of exogenous nanomaterials on LCSC ROS changes are rarely reported. In this work, quantum dots (QDs) were prepared using a hydrothermal method, and QDs were further modified with polyethylene glycol (PEG) and bovine serum albumin (BSA) using a chemical approach...
April 12, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28431065/cha2ds2-vasc-score-and-blood-biomarkers-to-identify-patients-with-atrial-high-rate-episodes-and-paroxysmal-atrial-fibrillation
#3
Paulina Wakula, Benjamin Neumann, Jens Kienemund, Eva Thon-Gutschi, Tatjana Stojakovic, Martin Manninger, Daniel Scherr, Hubert Scharnagl, Martin Kapl, Burkert Pieske, Frank R Heinzel
Aims: Paroxysmal atrial fibrillation (PAF) is often asymptomatic but nonetheless harmful. We evaluated the performance of disease-related blood biomarkers and CHA2DS2-VASc score to discriminate for PAF in patients with continuous rhythm monitoring. Methods and Results: Clinical data and blood samples were obtained from patients with dual-chamber pacemakers selected according to the absence (no_AHRE) or presence of Atrial High-Rate Episodes (AHRE) >6 min in recent device history (case-control approach)...
April 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28429785/natriuretic-peptide-receptor-guanylyl-cyclase-a-pathway-counteracts-glomerular-injury-evoked-by-aldosterone-through-p38-mitogen-activated-protein-kinase-inhibition
#4
Yukiko Kato, Kiyoshi Mori, Masato Kasahara, Keisuke Osaki, Akira Ishii, Keita P Mori, Naohiro Toda, Shoko Ohno, Takashige Kuwabara, Takeshi Tokudome, Ichiro Kishimoto, Moin A Saleem, Taiji Matsusaka, Kazuwa Nakao, Masashi Mukoyama, Motoko Yanagita, Hideki Yokoi
Guanylyl cyclase-A (GC-A) signaling, a natriuretic peptide receptor, exerts renoprotective effects by stimulating natriuresis and reducing blood pressure. Previously we demonstrated massive albuminuria with hypertension in uninephrectomized, aldosterone-infused, and high salt-fed (ALDO) systemic GC-A KO mice with enhanced phosphorylation of p38 mitogen-activated protein kinase (MAPK) in podocytes. In the present study, we examined the interaction between p38 MAPK and GC-A signaling. The administration of FR167653, p38 MAPK inhibitor, reduced systolic blood pressure (SBP), urinary albumin excretion, segmental sclerosis, podocyte injury, and apoptosis...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28428691/relationship-between-xanthine-oxidase-ischemia-modified-albumin-nitric-oxide-with-antioxidants-in-non-pregnants-pre-and-post-delivery-of-normal-pregnants-and-preeclampsia
#5
Vanishree Bambrana, C D Dayanand, Pushpa Kotur
Preeclampsia is a multisystem disorder involves altered homeostasis of oxidants-antioxidants, inflammatory process and endothelial dysfunction. The present study aim was to determine the levels of oxidative stress parameters (malondialdehyde, protein carbonyl, ischemia modified albumin and xanthine oxidase), nutrient antioxidants (vitamin C and vitamin E), enzyme antioxidants (catalase, superoxide dismutase, glutathione peroxidase glutathione reductase), total antioxidant status (TAS) and its association with nitric oxide...
June 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/28428134/use-of-physiological-biomarkers-in-diagnosis-along-with-field-trials-of-different-trypanisidal-drugs-in-camels-of-cholistan-desert
#6
Aneela Zameer Durrani, Zubair Bashir, Khalid Mehmood, Muhammad Avais, Haroon Akbar, Waqas Ahmad, Muhammad Azeem
The point prevalence of trypanosomiasis with different physiological biomarkers along with evaluation of the most responsive trypanosidal drug against trypanosomiasis under field conditions was studied. For this purpose a total of 300 free range camels were selected at different grazing and watering point in Cholistan desert. The study population of camels included 150 clinically suspected camels for trypanosomiasis and 150 healthy camels with normal temperature, pulse and respiration. For therapeutic trials 36 positively diagnosed animals were randomly divided into three experimental groups for therapeutic trials...
April 17, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28427660/ultrasound-processed-nanoemulsion-a-comparative-approach-between-resveratrol-and-resveratrol-cyclodextrin-inclusion-complex-to-study-its-binding-interactions-antioxidant-activity-and-uv-light-stability
#7
Raj Kumar, Khushwinder Kaur, Shivani Uppal, S K Mehta
Resveratrol is a naturally occurring therapeutic molecule used for treatment of diseases caused by oxidative stress. This investigation elucidates the advantages of fabrication of size controlled resveratrol inclusion complex. This has been done by encapsulating resveratrol-cyclodextrin inclusion complex in a phospholipid stabilized nanoemulsion formulated by ultrasonication emulsification method. The prepared nanoemulsion has been compared with resveratrol encapsulated nanoemulsion system. The morphology of the resveratrol nanoemulsion and inclusion complex nanoemulsion have been observed using transmission electron microscopy with average size 20...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28427650/effect-of-ultrasound-on-the-interaction-between-epicatechin-gallate-and-bovine-serum-albumin-in-a-model-wine
#8
Qing-An Zhang, Xi-Zhe Fu, Juan Francisco García Martín
Ultrasound is considered as a potential novel technique for improving the quality of some wines. In this paper, a model wine firstly was constructed with the standards of (-)-epicatechin gallate (ECG) and bovine serum albumin (BSA) as target compounds. Then, the experiments were conducted to investigate the effect of ultrasonic irradiation on the binding properties between ECG and BSA including quenching mechanism, binding parameters, binding forces, energy transfer distance and conformational changes determined by spectral analysis...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28427398/euphorbia-dracunculoides-l-abrogates-carbon-tetrachloride-induced-liver-and-dna-damage-in-rats
#9
Riffat Batool, Muhammad Rashid Khan, Muhammad Majid
BACKGROUND: Evaluation of Euphorbia dracunculoides of family Euphorbiaceae during previous studies had established the in vitro antioxidant and in vivo anti-inflammatory activities. The plant is used by the local communities of Pakistan for various disorders including rheumatism and edema. In this investigation we have evaluated the hepatoprotective effects against CCl4 induced toxicity in rat. METHODS: Dry powder of the aerial parts of E. dracunculoides was extracted with 95% methanol to get the extract (EDME)...
April 20, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28426740/uncovering-the-molecular-and-physiological-processes-of-anticancer-leads-binding-human-serum-albumin-a-physical-insight-into-drug-efficacy
#10
Chuanbo Liu, Zuojia Liu, Jin Wang
Human serum albumin (HSA) has its ability to bind drug molecules and influence their efficacies. Although anticancer leads NSC48693 and NSC290956 functioned at the same mechanism, the drug efficacies were obviously distinct. To gain insight into the distinct drug efficacy, the molecular and physiological processes of anticancer leads binding HSA have been investigated via a combined experimental and theoretical approach. The binding site, as characterized by fluorescence quenching and molecular modeling, is found to be located at site II in subdomain III A for NSC48693 with tight binding and at site FA1 in subdomain I B for NSC290956 with negatively cooperative binding, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28424924/effects-of-gw002-a-novel-recombinant-human-glucagon-like-peptide-1-glp-1-analog-fusion-protein-on-cho-recombinant-cells-and-bks-db-mice
#11
Wan-Wan Ji, Dong-An Yu, Min Fan, Meng You, You Lu, Er-Bing Li, Ning Xie, Shou-Sheng Yan
AIMS: GLP-1-based strategies have many advantages in treatment of type 2 diabetes mellitus (T2DM), but native GLP-1 has a short half-life in the circulation, which limits its clinical application. The purpose of this study was to evaluate the effects of GW002, a novel recombinant GLP-1 analog fusion protein produced by linking the human GLP-1 analog C-terminus to the N-terminus of human serum albumin via a linker, in vitro and in BKS-db mice. METHODS: To determine whether GW002 can activate the GLP-1 receptor in cells, the level of luciferase expression was evaluated in vitro...
April 19, 2017: Acta Diabetologica
https://www.readbyqxmd.com/read/28424277/janus-kinase-2-regulates-transcription-factor-eb-expression-and-autophagy-completion-in-glomerular-podocytes
#12
Tamadher A Alghamdi, Syamantak Majumder, Karina Thieme, Sri N Batchu, Kathryn E White, Youan Liu, Angela S Brijmohan, Bridgit B Bowskill, Suzanne L Advani, Minna Woo, Andrew Advani
The nonreceptor kinase Janus kinase 2 (JAK2) has garnered attention as a promising therapeutic target for the treatment of CKD. However, being ubiquitously expressed in the adult, JAK2 is also likely to be necessary for normal organ function. Here, we investigated the phenotypic effects of JAK2 deficiency. Mice in which JAK2 had been deleted from podocytes exhibited an elevation in urine albumin excretion that was accompanied by increased podocyte autophagosome fractional volume and p62 aggregation, which are indicative of impaired autophagy completion...
April 19, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28422043/real-world-efficacy-and-safety-of-ritonavir-boosted-paritaprevir-ombitasvir-dasabuvir-%C3%A2-ribavirin-for-hepatitis-c-genotype-1-final-results-of-the-rev1tal-study
#13
John Lubel, Simone Strasser, Katherine A Stuart, Gregory Dore, Alexander Thompson, Stephen Pianko, Steven Bollipo, Joanne L Mitchell, Vincenzo Fragomeli, Tracey Jones, Sarah Chivers, Paul Gow, David Iser, Miriam Levy, Edmund Tse, Alessia Gazzola, Wendy Cheng, Saroj Nazareth, Sam Galhenage, Amanda Wade, Martin Weltman, Alan Wigg, Gerry MacQuillan, Joe Sasadeusz, Jacob George, Amany Zekry, Stuart K Roberts
BACKGROUND: Limited data exist on the outcomes of ritonavir-boosted paritaprevir with ombitasvir and dasabuvir (PrOD) ± ribavirin in a real-world setting. The aim of this study was to compare the efficacy and safety of PrOD-based therapy in hepatitis C genotype 1 patients with and without cirrhosis, and to explore pre-treatment factors predictive of sustained viral response (SVR) and serious adverse events (SAEs) on treatment. METHODS: 451 patients with hepatitis C genotype 1 treated in 20 centres across Australia were included...
April 19, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28420169/ultrasensitive-label-free-sensing-of-il-6-based-on-pase-functionalized-carbon-nanotube-micro-arrays-with-rna-aptamers-as-molecular-recognition-elements
#14
Farhad Khosravi, Seyed Masoud Loeian, Balaji Panchapakesan
This study demonstrates the rapid and label-free detection of Interleukin-6 (IL-6) using carbon nanotube micro-arrays with aptamer as the molecular recognition element. Single wall carbon nanotubes micro-arrays biosensors were manufactured using photo-lithography, metal deposition, and etching techniques. Nanotube biosensors were functionalized with 1-Pyrenebutanoic Acid Succinimidyl Ester (PASE) conjugated IL-6 aptamers. Real time response of the sensor conductance was monitored with increasing concentration of IL-6 (1 pg/mL to 10 ng/mL), exposure to the sensing surface in buffer solution, and clinically relevant spiked blood samples...
April 17, 2017: Biosensors
https://www.readbyqxmd.com/read/28419132/spectrophotometric-and-molecular-modelling-studies-on-in-vitro-interaction-of-tyrosine-kinase-inhibitor-linifanib-with-bovine-serum-albumin
#15
Tanveer A Wani, Ahmed H Bakheit, Seema Zargar, Mohammed A Hamidaddin, Ibrahim A Darwish
Linifanib (LNF) possess antitumor activity and acts by inhibiting receptor tyrosine kinase VEGF and PDGF. The interaction of BSA with the drug can provide valuable information regarding the pharmacokinetic and pharmacodynamics behavior of drug. In our study the spectrophotometric methods and molecular docking studies were executed to understand the interaction behavior of BSA and LNF. BSA has an intrinsic fluorescence and that fluorescence was quenched by LNF. This quenching process was studied at three different temperatures of 288, 300and 308 K...
2017: PloS One
https://www.readbyqxmd.com/read/28418940/assessment-of-the-albumin-bilirubin-albi-grade-as-a-prognostic-indicator-for-hepatocellular-carcinoma-patients-treated-with-radioembolization
#16
Bin Gui, Ashley A Weiner, John Nosher, Shou-En Lu, Gretchen M Foltz, Omar Hasan, Seung K Kim, Vyacheslav Gendel, Naganathan B Mani, Darren R Carpizo, Nael E Saad, Timothy J Kennedy, Darryl A Zuckerman, Jeffrey R Olsen, Parag J Parikh, Salma K Jabbour
OBJECTIVE: As the utility of Child-Pugh (C-P) class is limited by the subjectivity of ascites and encephalopathy, we evaluated a previously established objective method, the albumin-bilirubin (ALBI) grade, as a prognosticator for yttrium-90 radioembolization (RE) treatment for patients with hepatocellular carcinoma (HCC). MATERIALS AND METHODS: A total of 117 patients who received RE for HCC from 2 academic centers were reviewed and stratified by ALBI grade, C-P class, and Barcelona Clinic Liver Cancer stage...
April 17, 2017: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28416347/blood-collection-vials-and-clinically-used-intravenous-fluids-contain-significant-amounts-of-nitrite
#17
Luis E F Almeida, Sayuri Kamimura, Margaret Y Nettleton, Celia M de Souza Batista, Elizabeth Walek, Alfia Khaibullina, Li Wang, Zenaide M N Quezado
The biology of the inorganic anion nitrite is linked to nitric oxide (NO) as nitrite can be reduced to NO and mediate its biological activities. Thus, studies of nitrite biology require sensitive and selective chemical assays. The acetic and ascorbic acids method is selective for nitrite and measures it in biological matrices. However, one of the pitfalls of nitrite measurements is its ubiquitous presence in sample collection tubes. Here, we showed high levels of nitrite in collection tubes containing EDTA, sodium citrate or sodium heparin and smaller amounts in tubes containing lithium heparin or serum clot activator...
April 14, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28414961/interaction-between-bacterial-cell-membranes-and-nano-tio2-revealed-by-two-dimensional-ftir-correlation-spectroscopy-using-bacterial-ghost-as-a-model-cell-envelope
#18
Guocheng Huang, Tsz Wai Ng, Taicheng An, Guiying Li, Bo Wang, Dan Wu, Ho Yin Yip, Huijun Zhao, Po Keung Wong
The interaction between microorganisms and nanoparticles is a crucial step towards understanding the subsequent biological effect. In this study, the interaction between TiO2 nanoparticles and bacterial cell membrane was investigated by Two-dimensional Correlation Fourier Transformation Infrared spectroscopy (2D-FTIR-COS) using bacterial ghosts (BGs), which are non-living bacterial cell envelopes devoid of cytoplasm. The synchronous map of 2D-FTIR-COS results indicated that the functionalities in proteins of BGs preferentially interacted with TiO2 nanoparticles; whereas the interaction of TiO2 nanoparticles with characteristic functionality in polysaccharides (COH) and phospholipids (PO) were very weak or insensitive...
April 10, 2017: Water Research
https://www.readbyqxmd.com/read/28414112/binding-of-erucic-acid-with-human-serum-albumin-using-a-spectroscopic-and-molecular-docking-study
#19
Gulam Rabbani, Mohammad Hassan Baig, Arif Tasleem Jan, Eun Ju Lee, Mohsin Vahid Khan, Masihuz Zaman, Abd-ElAziem Farouk Gad, Rizwan Hasan Khan, Inho Choi
Erucic acid (EA) is one of the key fatty acids usually found in canola oil, mustard oil and rapeseed oil. Consumption of EA in primates was found to cause myocardial lipidosis and cardiac steatosis. To have an insight of the effect of EA in humans, we performed in vitro interaction studies of EA with the primary plasma protein, human serum albumin (HSA). Spectroscopic (UV-vis and fluorescence) analysis of the EA-HSA interaction revealed a static mode of quenching, with binding constant Kb ∼10(4) reflecting high affinity of EA for HSA...
April 13, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28413192/secondary-structural-changes-of-intact-and-disulfide-bridges-cleaved-human-serum-albumins-in-thermal-denaturation-up-to-130%C3%A2-c-additive-effects-of-sodium-dodecyl-sulfate-on-the-changes
#20
Yoshiko Moriyama, Kunio Takeda
The secondary structural changes of human serum albumin with the intact 17 disulfide bridges (HSA) and the disulfide bridges-cleaved human serum albumin (RCM-HSA) in thermal denaturation were examined. Most of the helical structures of HSA, whose original helicity was 66%, were sharply disrupted between 50 and 100°C. However, 14% helicity remained even at 130°C. The temperature dependence of the degree of disrupted helical structures of HSA was discussed in connection with questions about a general protein denaturation model...
April 13, 2017: Journal of Oleo Science
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