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https://www.readbyqxmd.com/read/29161775/the-influence-of-different-peptide-combinations-to-increase-the-immunogenicity-of-the-gonadotrophin-releasing-hormone-vaccine-for-prostate-cancer-treatment
#1
Franklin Fuentes Aguilar, Jesús Junco Barranco, Lesvia Calzada Aguilera, Eddy Bover Fuentes, Jose André Serradelo Leal, Eduardo Hernández López, Eulogio Pimentel Vázquez, Roberto Basulto Baker, Osvaldo Reyes Acosta, Hilda Garay Pérez, Gerardo Guillén Nieto
Purpose: Therapeutic vaccines, specifically the Gonadotrophin Releasing Hormone (GnRH) vaccine, are considered an additional therapeutic option for advanced stage prostate cancer. Our work showed amplification of the immune response when combining two peptides with and without the Very Small Size Proteoliposomes (VSSP). VSSP is a potent adjuvant for dendritic cells activation and Th1 differentiation. as enhanced immune response. Methods: The test was carried out in Copenhagen rats as animal model...
November 2017: Journal of Experimental Therapeutics & Oncology
https://www.readbyqxmd.com/read/29161771/tetramethylpyrazine-nitrone-activates-akt-creb-through-increasing-bdnf-expression-to-promote-post-ischemic-neuroregeneration-and-recovery-of-neurological-functions-in-rats
#2
Gaoxiao Zhang, Tao Zhang, Ning Li, Liangmiao Wu, Jianbo Gu, Cuimei Li, Chen Zhao, Wei Liu, Luchen Shan, Pei Yu, Xifei Yang, Yaohui Tang, Guo-Yuan Yang, Yuqiang Wang, Yewei Sun, Zaijun Zhang
BACKGROUND AND PURPOSE: Neuronal regeneration from endogenous precursors is an attractive strategy for the treatment of ischemic stroke; however, most stroke-generated new born neurons die over time. Therefore, a drug that is both neuroprotective and pro-neurogenic may be promising. In this study, we assessed the neurogenic and oligodendrogenic effects of tetramethylpyrazine nitrone (TBN), a neuroprotective drug candidate for stroke, in a rat model of ischemic stroke. EXPERIMENTAL APPROACH: Sprague Dawley (SD) rats were subjected to middle cerebral artery occlusion (MCAO)...
November 21, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29161666/genetic-variants-and-acute-kidney-injury-a-review-of-the-literature
#3
REVIEW
Daniel B Larach, Milo C Engoren, Ellen M Schmidt, Michael Heung
PURPOSE: Limited data exists on potential genetic contributors to acute kidney injury. This review examines current knowledge of AKI genomics. MATERIALS AND METHODS: 32 studies were selected from PubMed and GWAS Catalog queries for original data studies of human AKI genetics. Hand search of references identified 3 additional manuscripts. RESULTS: 33 of 35 studies were hypothesis-driven investigations of candidate polymorphisms that either did not consistently replicate statistically significant findings, or obtained significant results only in few small-scale studies...
November 13, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/29161665/switchable-electrochemiluminescence-aptasensor-coupled-with-resonance-energy-transfer-for-selective-attomolar-detection-of-hg-2-via-cdte-cds-dendrimer-probe-and-au-nanoparticle-quencher
#4
Bahareh Babamiri, Abdollah Salimi, Rahman Hallaj
In the present study, an ultrasensitive electrochemiluminescence (ECL) aptasensing assay for selective detection of Hg(2+) was designed. In this electrochemiluminescence resonance energy transfer (ECL-RET) approach, Fe3O4@SiO2/dendrimers/QDs exhibited amplified ECL emissions (switch "on" state) and with the hybridization between T-rich ssDNA(S1) immobilized on the Fe3O4@SiO2/dendrimers/QDs and AuNPs modified with complementary aptamer (AuNPs-S2), the ECL of QDs nanocomposites was efficiently quenched (switch "off" state)...
November 10, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29161500/a-small-molecule-mimetic-of-the-humanin-peptide-as-a-candidate-for-modulating-nmda-induced-neurotoxicity
#5
Mohammad Parvez Alam, Tina Bilousova, Patricia Spilman, Kanagasabai Vadivel, Dongsheng Bai, Denis Evseenko, Varghese John
Humanin (HN), a 24-amino acid bioactive peptide, has been shown to increase cell survival of neurons after exposure to Aβ and NMDA-induced toxicity and thus could be beneficial in the treatment of Alzheimer's disease (AD). The neuroprotection by HN is reported to be primarily through its agonist binding properties to the gp130 receptor. However, peptidic nature of HN presents challenges in its development as a therapeutic for AD. We report here for the first time the elucidation of the binding site of Humanin (HN) peptide to gp130 receptor extracellular domain through modeling and the synthesis of small molecule mimetics that interact with the HN binding site on the gp130 receptor that provides protection against NMDA-induced neurotoxicity in primary hippocampal neurons...
November 21, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29161441/contributions-of-function-altering-variants-in-genes-implicated-in-pubertal-timing-and-body-mass-for-self-limited-delayed-puberty
#6
Sasha R Howard, Leonardo Guasti, Ariel Poliandri, Alessia David, Claudia P Cabrera, Michael R Barnes, Karoliina Wehkalampi, Stephen O'Rahilly, Catherine E Aiken, Anthony P Coll, Marcella Ma, Debra Rimmington, Giles S H Yeo, Leo Dunkel
Context: Self-limited delayed puberty (DP) is often associated with delay in physical maturation, but whilst highly heritable the causal genetic factors remain elusive. Genome-wide association studies of the timing of puberty have identified multiple loci for age of menarche (AAM) in females and voice break in males, particularly in pathways controlling energy balance. Objective/Main outcome measures: We aimed to assess the contribution of rare variants in such genes to the phenotype of familial DP...
November 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29161434/designing-a-mutant-candida-uricase-with-improved-polymerization-state-and-enzymatic-activity
#7
Lei Tao, Dandan Li, Yonghong Li, Xinchang Shi, Junzhi Wang, Chunming Rao, Yingqi Zhang
As human uricase has been silenced during evolution, counterparts from other species become an alternative for the treatment of hyperuricemia. Candida uricase is a promising option among them, but its aggregation propensity remains a major obstacle to clinical use. In this study, we designed two mutations according to homology-modeled 3D structure of Candida uricase: Cys249Ser substitution and C-terminal Leu deletion. The wild-type uricase and three mutants containing either or both of the mutations were expressed in Escherichiacoli BL21 and validated by mass spectrometry...
November 17, 2017: Protein Engineering, Design & Selection: PEDS
https://www.readbyqxmd.com/read/29161321/association-mapping-unveils-favorable-alleles-for-grain-iron-and-zinc-concentrations-in-lentil-lens-culinaris-subsp-culinaris
#8
Akanksha Singh, Vinay Sharma, Harsh Kumar Dikshit, Muraleedhar Aski, Harish Kumar, Nepolean Thirunavukkarasu, Basavanagouda S Patil, Shiv Kumar, Ashutosh Sarker
Lentil is a major cool-season grain legume grown in South Asia, West Asia, and North Africa. Populations in developing countries of these regions have micronutrient deficiencies; therefore, breeding programs should focus more on improving the micronutrient content of food. In the present study, a set of 96 diverse germplasm lines were evaluated at three different locations in India to examine the variation in iron (Fe) and zinc (Zn) concentration and identify simple sequence repeat (SSR) markers that associate with the genetic variation...
2017: PloS One
https://www.readbyqxmd.com/read/29161301/detection-and-quantification-of-dengue-virus-using-a-novel-biosensor-system-based-on-dengue-ns3-protease-activity
#9
Ming-Shu Hsieh, Mei-Yu Chen, Chun-Hsiang Hsieh, Chien-Hsiung Pan, Guann-Yi Yu, Hsin-Wei Chen
BACKGROUND: The traditional methods, plaque assays and immuno-focus assays, used to titrate infectious dengue virus (DENV) particles are time consuming and labor intensive. Here, we developed a DENV protease activity detection system (DENPADS) to visualize DENV infection in cells based on dengue protease activity. METHODOLOGY/PRINCIPAL FINDINGS: Dengue NS3 protease cleaves NS4B-NS5. BHK-21 cells stably expressing the sensor module comprising DENV-2 NS4 and the 10 amino-terminal amino acids of NS5 (N10NS5) fused with the SV40 nuclear localization signal (NLS) and Cre recombinase (Cre), were generated...
2017: PloS One
https://www.readbyqxmd.com/read/29161283/prognostic-significance-of-promoter-dna-hypermethylation-of-the-cysteine-dioxygenase-1-cdo1-gene-in-primary-gallbladder-cancer-and-gallbladder-disease
#10
Kazuharu Igarashi, Keishi Yamashita, Hiroshi Katoh, Keita Kojima, Yosuke Ooizumi, Nobuyuki Nishizawa, Ryo Nishiyama, Hiroshi Kawamata, Hiroshi Tajima, Takashi Kaizu, Yusuke Kumamoto, Masahiko Watanabe
BACKGROUND: Aberrant promoter DNA methylation of the cysteine dioxygenase 1 (CDO1) gene is found in various human cancers and is associated with clinical outcome. In this study, we assessed for the first time the clinicopathological significance of CDO1 methylation in primary gallbladder cancer (GBC) in comparison with non-malignant gallbladder disease. METHODS: CDO1 DNA methylation was quantified using quantitative TaqMan methylation specific PCR (Q-MSP) in 99 primary GBC patients together with the 78 corresponding non-tumor tissues and 26 benign gallbladder disease (including 7 patients with xanthogranulomatous cholecystitis) who underwent surgical resection between 1986 and 2014...
2017: PloS One
https://www.readbyqxmd.com/read/29161177/interactions-among-sexual-activity-menstrual-cycle-phase-and-immune-function-in-healthy-women
#11
Tierney K Lorenz, Julia R Heiman, Gregory E Demas
Past research has found menstrual-cycle-related changes in functional immune response; we examined if sexual activity also changed markers of immune defense. We followed 32 naturally cycling women (15 sexually active with a partner ≥ 1 time/week, 17 sexually abstinent for the last four months) over one menstrual cycle. Participants provided serum and saliva samples at menses and ovulation, and additional saliva samples at midfollicular and midluteal phases. At each phase, participants also self-reported symptoms associated with colds, flu, pain, menstrual discomfort, and premenstrual syndrome...
November 21, 2017: Journal of Sex Research
https://www.readbyqxmd.com/read/29161150/cognitive-impairment-in-schizophrenia-and-depression-a-comparison-of-stability-and-course
#12
Peter Neu, Tina Gooren, Ulrike Niebuhr, Peter Schlattmann
Cognitive deficits are clinically relevant features in schizophrenia and depression, yet little comparative data on changes in both disorders is available. This study compares cognitive performance of inpatients with schizophrenia (N = 52) and unipolar major depression (N = 67) during psychiatric treatment, assessing performance twice: after admission to hospital (acute) and prior to discharge (postacute) on average seven weeks later. A group of healthy controls was tested at comparable intervals. Data was analyzed using a multivariate linear model...
November 21, 2017: Applied Neuropsychology. Adult
https://www.readbyqxmd.com/read/29161015/exploring-the-potential-of-biocompatible-osmoprotectants-as-high-efficient-cryoprotectants
#13
Jing Yang, Chao Pan, Jiamin Zhang, Xiaojie Sui, Yingnan Zhu, Chiyu Wen, Lei Zhang
Cryoprotectants (CPAs) are critical to successful cryopreservation because they can protect cells from cryoinjuries. Due to the limitations of current CPAs, especially the toxicity, the search for new effective CPAs is attracting increasing attentions. In this work, we reported that natural biocompatible osmoprotectants, which could protect cells from osmotic injury in various biological systems, might also be ideal candidates for CPAs. Three representative biocompatible osmoprotectants (proline, glycine and taurine) were tested and compared...
November 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29160920/cobalt-catalyzed-electrophilic-amination-of-aryl-and-heteroaryl-zinc-pivalates-with-n-hydroxylamine-benzoates
#14
Yi-Hung Chen, Simon Graßl, Paul Knochel
Aryl- and heteroaryl-zinc pivalates are aminated with O-benzoylhydroxylamines at 25 °C within 2-4 h in the presence of 2-5% CoCl2*2LiCl furnishing the corresponding tertiary arylated or heteroarylated amines in good yields. This electrophilic amination provides also an access to diarylamines and aryl(heteroaryl)amines. A new tuberculosis drug candidate (Q203) was prepared in 6 steps and 56% overall yield using this cobalt-catalyzed amination as the key step.
November 21, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29160848/application-of-enzymatic-extracts-from-a-calb-standard-strain-as-biocatalyst-within-the-context-of-conventional-biodiesel-production-optimization
#15
Carlos Luna, Diego Luna, Felipa M Bautista, Rafael Estevez, Juan Calero, Alejandro Posadillo, Antonio A Romero, Enrique D Sancho
The application of biocatalysts in the transesterification process of triglycerides (TG) allows integrating the glycerol in the form of monoglyceride (MG), sharply increasing the yield and the environmental sustainability of the conventional biodiesel production process. This is known as Ecodiesel. To overcome the inconvenient of the high cost of the currently employed highly purified commercial enzymes, the use of scarcely purified extracts obtained from standard strains of the same species of commercial lipases currently applied in this process is being investigated...
November 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29160836/an-in-vitro-study-of-the-photodynamic-effectiveness-of-go-ag-nanocomposites-against-human-breast-cancer-cells
#16
Fozia Shaheen, Muhammad Hammad Aziz, Muhammad Fakhar-E-Alam, Muhammad Atif, Mahvish Fatima, Riaz Ahmad, Atif Hanif, Saqib Anwar, Fatima Zafar, Ghazanfar Abbas, Syed Mansoor Ali, Mukhtar Ahmed
Graphene-based materials have garnered significant attention because of their versatile bioapplications and extraordinary properties. Graphene oxide (GO) is an extremely oxidized form of graphene accompanied by the functional groups of oxygen on its surface. GO is an outstanding platform on which to pacify silver nanoparticles (Ag NPs), which gives rise to the graphene oxide-silver nanoparticle (GO-Ag) nanocomposite. In this experimental study, the toxicity of graphene oxide-silver (GO-Ag) nanocomposites was assessed in an in vitro human breast cancer model to optimize the parameters of photodynamic therapy...
November 21, 2017: Nanomaterials
https://www.readbyqxmd.com/read/29160773/rationalizing-substituent-effects-in-1-azathioxanthone-photophysics
#17
Anne Kathrine R Junker, Thomas Just Sørensen
The influence of an electron donating substituent on the photophysical properties of 1-azathioxanthone dyes has been investigated using optical spectroscopy and theoretical models. The motivation behind the study is based on the fact that thioxanthones are efficient triplet sensitizers, and thus promising sensitizers for lanthanide centered emission. By adding an aza group to one of the phenyl ring systems, direct coordination to a lanthanide center becomes possible, which makes azathoixanthones great candidates as antenna chromophores in lanthanide(III) based dyes...
November 21, 2017: Methods and Applications in Fluorescence
https://www.readbyqxmd.com/read/29160746/nucleic-acid-therapies-for-cystic-fibrosis
#18
Shruti Sasaki, Shuling Guo
Nucleic acid therapeutics are an established class of drugs that enable specific targeting of a gene of interest. This diverse family of drugs includes antisense oligonucleotides, siRNAs, and mRNA replacement therapies, which can elicit both gene repression and activation, primarily at the RNA level. Recent advances in medicinal chemistry have increased drug potency and enhanced delivery and distribution to a broad array of tissue and cell types. A key advantage of nucleic acid therapeutics is in their application to monogenic diseases...
November 21, 2017: Nucleic Acid Therapeutics
https://www.readbyqxmd.com/read/29160745/the-unveiling-of-the-warburg-effect-and-the-inscribed-innovative-approach-to-a-radical-non-toxic-anticancer-therapy
#19
Olivia Crociani, Ilaria Marzi, Maria Grazia Cipolleschi, Antonella Mannini, Massimo Contini, Massimo Olivotto
The purpose of this research has been deciphering the Warburg paradox, the biochemical enigma unsolved since 1923. This paradox consists of the aerobic pyruvate conversion to lactate brought about by anaplastic cancer, through the metabolic pathway known as aerobic glycolysis. This pathway implies a heavy energetic waste. We solved the enigma by demonstrating that its specific character, i.e. the forced aerobic lactate exportation, represents a crucial metabolic device to counteract the cytotoxic effect produced by an excess of pyruvate at the connection of glycolysis with the Krebs cycle...
November 21, 2017: Cell Cycle
https://www.readbyqxmd.com/read/29160732/optimization-and-characterization-of-sertaconazole-nitrate-flexisomes-embedded-in-hydrogel-for-improved-antifungal-activity
#20
Satish K Mandlik, Shridhar S Siras, Kiran R Birajdar
The aim of the present research work was to develop, characterize and optimize sertaconazole nitrate (STZN) embedded flexisomes (STZN-FS) to improve the cutaneous anti-fungal activity of STZN. Flexisomes are self-aggregating, flexible, deformable lipidic vesicles possessing an aqueous core. A 3(2) factorial design was implemented to optimize the effects of the critical material attributes of concentration of phospholipid (X1) and edge activator (X2) on the critical quality attributes of particle size (Y1), entrapment efficiency (Y2) and deformability index (Y3)...
November 21, 2017: Journal of Liposome Research
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