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https://www.readbyqxmd.com/read/28631466/enhancing-the-performance-of-polymer-solar-cells-by-using-donor-polymers-carrying-discretely-distributed-side-chains
#1
Xue Gong, Guangwu Li, Yang Wu, Jicheng Zhang, Shiyu Feng, Yahui Liu, Cuihong Li, Wei Ma, Zhishan Bo
Three-component conjugated polymers P1-1 and P1-2 were prepared by one-pot Stille cross-coupling reaction and applied for polymer solar cell (PSCs). The two-component polymer P1-0 only comprises 5-flouro-6-alkyloxybenzothiadiazole (AFBT) acceptor unit and thiophene donor unit; while the three-component polymers P1-1 and P1-2 contain 10% and 20% 5,6-difluorobenzothiadiazole (DFBT), respectively, as the third component. The incorporation of the third component, 5,6-difluorobenzothiadiazole, makes the side chains discretely distributed in the polymer backbones, which can enhance the π-π stacking of polymers in film, markedly increase the hole mobility of active layers, and improve the power conversion efficiency (PCE) of devices...
June 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28625858/stem-cells-pluripotency-and-glial-cell-markers-in-peripheral-blood-of-bipolar-patients-on-long-term-lithium-treatment
#2
REVIEW
Ewa Ferensztajn-Rochowiak, Jolanta Kucharska-Mazur, Maciej Tarnowski, Jerzy Samochowiec, Mariusz Z Ratajczak, Janusz K Rybakowski
BACKGROUND: We investigated the effect of long-term lithium treatment on very-small embryonic-like stem cells (VSELs) and the mRNA expression of pluripotency and glial markers, in peripheral blood, in patients with bipolar disorder (BD). METHODS: Fifteen BD patients (aged 53±7years) not treated with lithium, with duration of illness >10years, 15 BD patients (aged 55±6years) treated with lithium for 8-40years (mean 16years) and 15 control subjects (aged 50±5years) were included...
June 15, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28618452/murine-melanoma-cells-incomplete-reprogramming-using-non-viral-vector
#3
D A D Câmara, A S Porcacchia, A S Costa, R A Azevedo, I Kerkis
OBJECTIVES: The reprogramming of cancer cells into induced pluripotent stem cells or less aggressive cancer cells can provide a modern platform to study cancer-related genes and their interactions with cell environment before and after reprogramming. Herein, we aimed to investigate the reprogramming capacity of murine melanoma B16F10 cells. MATERIALS AND METHODS: The B16F10 was transfected using non-viral circular DNA plasmid containing the genes Sox-2, Oct4, Nanog, Lin28 and green fluorescent protein (GFP)...
June 15, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28614259/global-regulator-soxr-is-a-negative-regulator-of-efflux-pump-gene-expression-and-affects-antibiotic-resistance-and-fitness-in-acinetobacter-baumannii
#4
Henan Li, Qi Wang, Ruobing Wang, Yawei Zhang, Xiaojuan Wang, Hui Wang
SoxR is a global regulator contributing to multidrug resistance in Enterobacteriaceae. However, the contribution of SoxR to antibiotic resistance and fitness in Acinetobacter baumannii has not yet been studied. Comparisons of molecular characteristics were performed between 32 multidrug-resistant A. baumannii isolates and 11 susceptible isolates. A soxR overexpression mutant was constructed, and its resistance phenotype was analyzed. The impact of SoxR on efflux pump gene expression was measured at the transcription level...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28607685/concurrent-braf-and-pten-mutations-in-melanoma-of-unknown-origin-presenting-as-a-breast-mass
#5
Emmanuel Agosto-Arroyo, Marilin Rosa, Alec Chau, Laila Khazai
BACKGROUND: Metastases represent a small percentage of the malignancies affecting the breast, and only 5% of melanomas originate from non-cutaneous sites. Multiple genetic aberrations have been associated with the development of melanocytic lesions, including BRAF V600E mutation. Mutations in PTEN gene have also been related to the pathogenesis of multiple malignancies. PURPOSE/METHOD: This is the case of a 28-year-old female who presented with a tender, palpable mass in the upper outer quadrant of the right breast...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/28601070/sox9-protects-against-human-lung-fibroblast-cell-apoptosis-induced-by-lps-through-activation-of-the-akt-gsk3%C3%AE-pathway
#6
Zhankun Zhu, Jinhua Dai, Yufeng Liao, Tao Wang
Sex-determining region Y-box 9 (Sox9) is an important transcription factor that has been identified as a key regulator of several types of diseases. In this study, we explored the correlation of Sox9 with cell proliferation, apoptosis, inflammatory factor expression, and the possible signaling pathway in human lung fibroblast cell line to investigate the possible mechanism of neonatal pneumonia. Therefore, in the present study, pc-Sox9 and si-Sox9 were transfected into MRC-5 (human fetal lung fibroblast cell line) to promote or inhibit expression of Sox-9...
May 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28594131/optimization-of-puncture-injury-to-rat-caudal-disc-for-mimicking-early-degeneration-of-intervertebral-disc
#7
Ming-Hsiao Hu, Kai-Chiang Yang, Yeong-Jang Chen, Yuan-Hui Sun, Feng-Huei Lin, Shu-Hua Yang
The caudal discs of rats have been proposed as a puncture model in which intervertebral disc (IVD) degeneration can be induced and novel therapies can be tested. For biological repair, treatments for ongoing IVD degeneration are ideally administered during the earlier stages. The purpose of this study was to elucidate the optimal puncture needle size for creating a model that mimicked the earlier stages of IVD degeneration. According to the disc height index, histologic score and MRI grading, a puncture needle sized 21G or larger induced rapid degenerative processes in rat caudal discs during the initial 2-4 weeks...
June 8, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28569041/predictive-value-of-tlr7-polymorphism-for-cetuximab-based-chemotherapy-in-patients-with-metastatic-colorectal-cancer
#8
Satoshi Okazaki, Sebastian Stintzing, Yu Sunakawa, Shu Cao, Wu Zhang, Dongyun Yang, Yan Ning, Satoshi Matsusaka, Martin D Berger, Yuji Miyamoto, Mitsukuni Suenaga, Marta Schirripa, Jordan D West, Roel Gopez, Tsuji Akihito, Wataru Ichikawa, Volker Heinemann, R William DePaolo, Heinz-Josef Lenz
The TLR7 and TLR9 signalings are implicated in the regulation of the immune system through type-I interferon induction. Preclinical studies have demonstrated the immunomodulatory and antitumor effects of TLR7 and TLR9 agonists in combination with cetuximab. We tested the hypothesis that genetic variations in TLR7 and TLR9 and their downstream molecules IRF5 and IRF7 were associated with outcomes in metastatic colorectal cancer (mCRC) patients receiving cetuximab-based chemotherapy. Six single nucleotide polymorphisms (SNPs) in TLR7, TLR9, IRF5 and IRF7 were tested for the association with RR, PFS, and OS in KRAS-wild type mCRC patients...
May 31, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28559081/stemness-markers-detection-in-the-periphery-of-glioblastomas-and-glioblastoma-ability-to-generate-glioma-stem-cells-clinical-correlations
#9
Raysi Dehcordi Soheila, Ricci Alessandro, Di Vitantonio Hambra, De Paulis Danilo, Luzzi Sabino, Palumbo Paola, Cinque Benedetta, Daniela Tempesta, Gino Coletti, Gianluca Cipolloni, Cifone Maria Grazia, Galzio Renato
BACKGROUND: Recent studies suggested glioma stem cells (GSCs) are key contributors to GBM therapeutic resistance and are responsible for GBM recurrence. METHODS: Our aim was to characterize the phenotype of cancer cells in the core and periphery of 20 GBMs, correlating clinical outcome to the ability to form GSCs and distinguishing survival based on Ki67 staining. RESULTS: Results showed similar levels of MGMT in the core and in the periphery of GBMs; whereas the Ki67 was reduced in the periphery...
May 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28553122/peripheral-venous-blood-neutrophil-to-lymphocyte-ratio-predicts-survival-in-patients-with-advanced-gastric-cancer-treated-with-neoadjuvant-chemotherapy
#10
Li Chen, Yanjiao Zuo, Lihua Zhu, Yuxin Zhang, Sen Li, Fei Ma, Yu Han, Hongjiang Song, Yingwei Xue
BACKGROUND: Accurate and useful predictors of gastric carcinoma treated with neoadjuvant chemotherapy are lacking at present. We aim to explore the potential prognostic significance of the neutrophil-to-lymphocyte ratio (NLR) in advanced gastric cancer receiving S-1 plus oxaliplatin (SOX) or oxaliplatin and capecitabine (XELOX) regimen. METHODS: We enrolled 91 patients with advanced gastric cancer treated with neoadjuvant chemotherapy from August 2008 to September 2015...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28545668/phenethyl-isothiocyanate-suppresses-cancer-stem-cell-properties-in-vitro-and-in-a-xenograft-model
#11
Ji Ho Yun, Kyung-A Kim, Gyhye Yoo, Sun Young Kim, Ji Min Shin, Jung Hoon Kim, Sang Hoon Jung, Jungho Kim, Chu Won Nho
BACKGROUND: Cancer stem cells (CSCs) are a subset of cells within the bulk of a tumor that have the ability to self-renew and differentiate, and are thus associated with cancer invasion, metastasis, and recurrence. Phenethyl isothiocyanate (PEITC) is a natural compound found in cruciferous vegetables such as broccoli and is used as a cancer chemopreventive agent; however, its effects on CSCs are little known. PURPOSE: To evaluate the effect of PEITC on CSCs in this study by examining CSC properties...
July 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28535666/ddx53-regulates-cancer-stem-cell-like-properties-by-binding-to-sox-2
#12
Youngmi Kim, Minjeong Yeon, Dooil Jeoung
This study investigated the role of cancer/testis antigen DDX53 in regulating cancer stem cell-like properties. DDX53 shows co-expression with CD133, a marker for cancer stem cells. DDX53 directly regulates the SOX-2 expression in anticancer drug-resistant Malme3M(R) cells. DDX53 and miR-200b were found to be involved in the regulation of tumor spheroid forming potential of Malme3M and Malme3M(R) cells. Furthermore, the self-renewal activity and the tumorigenic potential of Malme3M(R)-CD133 (+) cells were also regulated by DDX53...
May 31, 2017: Molecules and Cells
https://www.readbyqxmd.com/read/28529185/care-2013-explanations-and-elaborations-reporting-guidelines-for-case-reports
#13
David S Riley, Melissa S Barber, Gunver S Kienle, Jeffry Aronson, Tido von Schoen-Angerer, Peter Tugwell, Helmut Kiene, Mark Helfand, Douglas G Altman, Harold Sox, Paul G Werthmann, David Moher, Richard A Rison, Larissa Shamseer, Christian A Koch, Gordon H Sun, Patrick Hanaway, Cleveland Clinic, Nancy L Sudak, Marietta Kaszkin-Bettag, Joel J Gagnier
Well-written and transparent case reports (1) reveal early signals of potential benefits, harms, and information on the use of resources; (2) provide information for clinical research and clinical practice guidelines (CPGs), and (3) inform medical education. High-quality case reports are more likely when authors follow reporting guidelines. During 2011-2012 a group of clinicians, researchers, and journal editors developed recommendations for the accurate reporting of information in case reports that resulted in the CARE (CAse REport) Statement and Checklist...
May 18, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28522297/three-dimensional-spheroid-culture-promotes-the-stemness-maintenance-of-cranial-stem-cells-by-activating-pi3k-akt-and-suppressing-nf-%C3%AE%C2%BAb-pathways
#14
Da He, Ren-Xian Wang, Jian-Ping Mao, Bin Xiao, Da-Fu Chen, Wei Tian
Multipotent stem cells are one of the most powerful tools available for the bone regeneration. However, owing to various limitations, including a lack of tissue-specific stem cell identification, reconstruction of large cranial bone defects remains challenging. In the current study, we isolated a population of Sca-1(+)CD105(+)CD140a(+) stem cells from adult mouse calvarium and cultured them as three-dimensional spheroids. Although these cells shared similar surface antigens when grown in either monolayers or spheroids, the cranial stem cells grown in spheroids possessed enhanced multipotency and proliferation capacity...
May 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28495880/sox4-allows-facultative-%C3%AE-cell-proliferation-through-repression-of-cdkn1a
#15
Eric E Xu, Shugo Sasaki, Thilo Speckmann, Cuilan Nian, Francis C Lynn
The HMG-box transcription factor, SOX4, is the most highly expressed SOX family protein in pancreatic islets, and mutations in Sox4 are associated with an increased risk of developing type 2 diabetes. We utilized an inducible β-cell knockout mouse model to test the hypothesis that Sox4 is essential for the maintenance of β-cell number during the development of type 2 diabetes. Knockout of Sox4 at 6 weeks of age resulted in time-dependent worsening of glucose tolerance, impairment of insulin secretion, and diabetes by 30 weeks of age...
May 11, 2017: Diabetes
https://www.readbyqxmd.com/read/28485205/effect-of-epigallocatechin-3-gallate-on-the-increase-in-type-ii-collagen-accumulation-in-cartilage-like-msc-sheets
#16
Keigo Sato, Hisashi Mera, Shigeyuki Wakitani, Mutsumi Takagi
With the aim to increase type II collagen content in the scaffold-free cartilage-like cell sheet using human bone marrow mesenchymal stem cells, we examined the effect of epigallocatechin-3-gallate (EGCG) addition to the chondrogenic medium for the cell sheet culture. The addition of EGCG (10 μM) increased the content of type II collagen 2-fold, while the addition did not markedly change the expression level of the genes encoding type II collagen and Sox 9. The reactive oxygen species level in the cells in cell sheets was thought to be too low to suppress the accumulation of type II collagen...
June 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28484208/an-injectable-non-cross-linked-hyaluronic-acid-gel-containing-therapeutic-spheroids-of-human-adipose-derived-stem-cells
#17
Jingwei Feng, Kazuhide Mineda, Szu-Hsien Wu, Takanobu Mashiko, Kentaro Doi, Shinichiro Kuno, Kahori Kinoshita, Koji Kanayama, Rintaro Asahi, Ataru Sunaga, Kotaro Yoshimura
For chronic wounds, the delivery of stem cells in spheroidal structures can enhance graft survival and stem cell potency. We describe an easy method for the 3D culture of adipose-derived stem/stromal cells (ASCs) to prepare a ready-to-use injectable. We transferred suspensions of monolayer-cultured ASCs to a syringe containing hyaluronic acid (HA) gel, and then incubated the syringe as a 3D culture vessel. Spheroids of cells formed after 12 h. We found that 6 × 10(6) ASCs/ml in 3% HA gel achieved the highest spheroid density with appropriate spheroid sizes (20-100 µm)...
May 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28467624/palladium-catalyzed-cascade-sp-2-c-h-functionalization-intramolecular-asymmetric-allylation-from-aryl-ureas-and-1-3-dienes-to-chiral-indolines
#18
Shu-Sen Chen, Min-Song Wu, Zhi-Yong Han
A chiral Pd(II) -catalyzed cascade sp(2) C-H functionalization/intramolecular asymmetric allylation reaction is reported. A new chiral sulfoxide-oxazoline (SOX) ligand bearing single chiral center on the sulfur was identified as the optimal ligand for the reaction, being efficient both in the C-H cleavage step and the stereocontrol of the allylation step. The broad scope of this method with respect to aryl ureas and 1,3-dienes enables the rapid construction of valuable chiral indoline derivatives with high yields and enantioselectivities (up to 99 % yield, up to 95:5 e...
June 1, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28461325/role-of-rac1-pathway-in-epithelial-to-mesenchymal-transition-and-cancer-stem-like-cell-phenotypes-in-gastric-adenocarcinoma
#19
Changhwan Yoon, Soo-Jeong Cho, Kevin K Chang, Do Joong Park, Sandra W Ryeom, Sam S Yoon
Rac1, a Rho GTPase family member, is dysregulated in a variety of tumor types including gastric adenocarcinoma, but little is known about its role in cancer stem-like cells (CSCs). Therefore, Rac1 activity and inhibition were examined in gastric adenocarcinoma cells and mouse xenograft models for epithelial-to-mesenchymal transition (EMT) and CSC phenotypes. Rac1 activity was significantly higher in spheroid-forming or CD44(+) gastric adenocarcinoma CSCs compared with unselected cells. Rac1 inhibition using Rac1 shRNA or a Rac1 inhibitor (NSC23766) decreased expression of the self-renewal transcription factor, Sox-2, decreased spheroid formation by 78%-81%, and prevented tumor initiation in immunodeficient mice...
May 1, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28440454/microrna%C3%A2-336-directly-targets-sox%C3%A2-2-in-osteosarcoma-to-inhibit-tumorigenesis
#20
Yong Cao, Tianding Wu, Dongzhe Li, Jianzhong Hu, Hongbin Lu
Previous evidence has suggested that microRNAs (miRNAs or miRs), which belong to a class of non‑coding RNAs, shape cellular processes by regulating gene expression. Abnormal expression of miRNAs has been associated with tumorigenesis in multiple cancers. However, the function of miR‑336 in osteosarcoma (OS) remains unknown. The experimental procedures used in the present study included flow cytometry, reverse transcription‑quantitative polymerase chain reaction, luciferase reporter assay, invasion assay, western blot analysis and in vivo implantation...
June 2017: Molecular Medicine Reports
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