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https://www.readbyqxmd.com/read/28727911/ultrasound-processing-of-liquid-system-s-and-its-antimicrobial-mechanism-of-action
#1
David Spiteri, Claire Chot-Plassot, Julie Sclear, Kimon Andreas Karatzas, Chris Scerri, Vasilis Valdramidis
Ultrasound creates cavitation phenomena, resulting in the formation of several free radicals, namely OH• and H•, due to the breakdown of the H2 O molecule. These radicals affect the cellular integrity of the bacteria, causing the inactivation of several processes, and thus it is important to unravel the mechanism of action of this technology. This research looks into the application and mechanism of action of ultrasound technology as a means of disinfection by acoustic cavitation. Sterile water and synthetic waste water were inoculated with different mutants of E...
July 20, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28719381/detection-of-putative-stem-cell-markers-in-invasive-ductal-carcinoma-of-the-breast-by-immunohistochemistry-does-it-improve-prognostic-predictive-assessments
#2
Rodrigo V Oliveira, Valéria B Souza, Philipi C Souza, Fernando A Soares, José Vassallo, Rafael M Rocha, André A Schenka
INTRODUCTION: Experimental evidences from the last 2 decades supports the existence of a special type of neoplastic cell with stem-like features [cancer stem cell (CSC)] and their role in the pathophysiology and therapeutic resistance of breast cancer. However, their clinical value in human breast cancer has not been fully determined. MATERIALS AND METHODS: An immunohistochemistry panel of 10 putative CSC markers (CD34, C-KIT, CD10, SOX-2, OCT 3/4, p63, CD24, CD44, CD133, and ESA/EPCAM) was applied to 74 cases of breast cancer, followed in a Regional Cancer Center of Minas Gerais State, Brazil, from 2004 to 2006...
July 17, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28718680/development-of-emu-oil-loaded-pcl-collagen-bioactive-nanofibers-for-proliferation-and-stemness-preservation-of-human-adipose-derived-stem-cell-possible-application-in-regenerative-medicine
#3
Kazem Nejati-Koshki, Younes Pilehvar-Soltanahmadi, Effat Alizadeh, Abbas Ebrahimi-Kalan, Yousef Mortazavi, Nosratollah Zarghami
Adipose tissue-derived stem cells (ASCs) are promising candidate in stem cell therapies, and maintaining their stemness potential is vital to achieve effective treatment. Natural based scaffolds have been recently attracted increasing attention in nanomedicine and drug delivery. In the present study, a polymeric nanofibrous scaffold was developed based on the polycaprolactone/Collagen (PCL/Coll) containing Emu oil as a bioactive material to induce the proliferation of ASCs, while simultaneously preserve the stemness property of those cells...
July 18, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28718020/critical-aggregates-concentration-of-fatty-esters-present-in-biodiesel-determined-by-turbidity-and-fluorescence
#4
Sandro Froehner, Juan Sánez, Luiz Fernando Dombroski, Maria Paula Gracioto
Biodiesel for combustible engine is available as mixture of fossil diesel and fatty esters obtained by transesterification of vegetable oils. The use of biodiesel reduces the amount of SOx, mainly. However, it was already observed that biodiesel has a different behavior in environment in cases of accidental spill and groundwater contamination. It was noticed that the biodegradation of hydrocarbons (cyclic and aliphatic) in the presence of biodiesel are speeded, although the mechanism is still unclear. Considering the chemical structure of fatty esters, it was investigated the formation of aggregates in water solution by fatty esters present in commercial biodiesel...
July 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28711577/a-randomised-phase-ii-study-of-continuous-versus-stop-and-go-s-1-plus-oxaliplatin-following-disease-stabilisation-in-first-line-chemotherapy-in-patients-with-metastatic-gastric-cancer
#5
Sook Ryun Park, Mi-Jung Kim, Byung-Ho Nam, Chan Gyoo Kim, Jong Yeul Lee, Soo-Jeong Cho, Sun-Young Kong, Young-Iee Park
OBJECTIVES: We compared continuous versus stop-and-go chemotherapy after disease stabilisation with induction chemotherapy in the first-line treatment of metastatic gastric cancer (MGC). METHODS: MGC patients who achieved disease control after 6 cycles of S-1/oxaliplatin (SOX) were randomised to receive either continuous SOX until progression (continuous arm) or to have a chemotherapy-free interval followed by SOX reintroduction at progression (stop-and-go arm)...
July 13, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28700423/sox2-gene-amplification-and-overexpression-is-linked-to-hpv-positive-vulvar-carcinomas
#6
André Gut, Holger Moch, Matthias Choschzick
SOX2 (SRY-related HMG-box 2) belongs to the SOX gene family of high-mobility transcription factors indispensably involved in gene regulation in pluripotent stem cells and neural differentiation. SOX2 copy number increases have been frequently reported in various types of squamous cell cancer. To better understand the effect of SOX2 aberrations on vulvar cancer phenotype and patient prognosis, we analyzed SOX2 copy number changes using fluorescence in situ hybridization and SOX2 expression by immunohistochemistry in 55 squamous cell carcinomas of the vulva...
July 11, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28699108/the-role-of-epithelial-mesenchymal-transition-in-squamous-cell-carcinoma-of-the-oral-cavity
#7
Nina Zidar, Emanuela Boštjančič, Marija Malgaj, Nina Gale, Tadej Dovšak, Vojko Didanovič
Epithelial-mesenchymal transition (EMT) has emerged as a possible mechanism of cancer metastasizing, but strong evidence for EMT involvement in human cancer is lacking. Our aim was to compare oral spindle cell carcinoma (SpCC) as an example of EMT with oral conventional squamous cell carcinoma (SCC) with and without nodal metastases to test the hypothesis that EMT contributes to metastasizing in oral SCC. Thirty cases of oral SCC with and without nodal metastasis and 15 cases of SpCC were included. Epithelial (cytokeratin, E-cadherin), mesenchymal (vimentin, N-cadherin), and stem cell markers (ALDH-1, CD44, Nanog, Sox-2) and transcription repressors (Snail, Slug, Twist) were analyzed immunohistochemically...
July 12, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28693208/efficacy-and-safety-of-sox-chemotherapy-with-or-without-surgery-in-afp-producing-advanced-gastric-cancer
#8
Zhu Li, Xu Hou, Juan Chen, Huidong Sun, Yuetang Mi, Yongling Sui, Yuhong Li, Jiaping Xie, Yingli Qiao, Xiaofeng Lei, Xiaoshuang Che, Jun Liu
The present study investigated the clinical efficacy of S-1 plus oxaliplatin (SOX) regimen, with or without surgery in α-fetoprotein-producing gastric cancer (APGC) with liver metastasis. A total of 24 patients with APGC treated at the Liaocheng People's Hospital between January 2011 and December 2013 were retrospectively reviewed. Clinical efficacy and patient safety were compared between the two groups. The median progression-free survival (PFS) and overall survival (OS) in the SOX group were 6.5 [95% confidence interval (CI), 4...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28676126/umbilical-cord-derived-mesenchymal-stromal-cells-predictive-obstetric-factors-for-cell-proliferation-and-chondrogenic-differentiation
#9
Léonore Avercenc-Léger, Philippe Guerci, Jean-Marc Virion, Ghislaine Cauchois, Sébastien Hupont, Rachid Rahouadj, Jacques Magdalou, Jean-François Stoltz, Danièle Bensoussan, Céline Huselstein, Loïc Reppel
BACKGROUND: The umbilical cord is becoming a notable alternative to bone marrow (BM) as a source of mesenchymal stromal cells (MSC). Although age-dependent variations in BM-MSC are well described, less data are available for MSC isolated from Wharton's jelly (WJ-MSC). We initiated a study to identify whether obstetric factors influenced MSC properties. We aimed to evaluate the correlation between a large number of obstetric factors collected during pregnancy and until peripartum (related to the mother, the labor and delivery, and the newborn) with WJ-MSC proliferation and chondrogenic differentiation parameters...
July 5, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28674807/an-efficient-transfection-method-for-differentiation-and-cell-proliferation-of-mouse-embryonic-stem-cells
#10
Jun-Yang Liou, Bor-Sheng Ko, Tzu-Ching Chang
Embryonic stem (ES) cells are an important source of stem cells in tissue engineering and regenerative medicine because of their high self-renewal capacities and differentiation potentials. However, the detailed molecular mechanisms controlling the differentiation and renewal programs in ES cells remained unclear. One of the difficulties in understanding these mechanisms substantially results from the low efficacies of gene manipulation by delivering exogenous gene expression or knockdown of endogenous gene expression with small interfering RNA (siRNA) in ES cells...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28667466/safety-pharmacokinetic-and-clinical-activity-profiles-of-ramucirumab-in-combination-with-three-platinum-fluoropyrimidine-doublets-in-japanese-patients-with-chemotherapy-na%C3%A3-ve-metastatic-gastric-gastroesophageal-junction-cancer
#11
Kohei Shitara, Shigenori Kadowaki, Tomohiro Nishina, Daisuke Sakai, Reigetsu Yoshikawa, Yongzhe Piao, Akihiro Ozeki, Koichi Inoue, Ismael Gritli, Kei Muro
BACKGROUND: We evaluated the safety, tolerability, pharmacokinetics, and tumor response of ramucirumab in combination with one of three platinum/fluoropyrimidine regimens in Japanese patients with chemotherapy-naïve metastatic gastric/gastroesophageal junction cancer. METHODS: In this phase 1b study, patients received 8 mg/kg ramucirumab on days 1 and 8 every 3 weeks, following one of three regimens: capecitabine + cisplatin, XP; S-1 + cisplatin, SP; or S-1 + oxaliplatin, SOX...
June 30, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28658046/induction-of-endogenous-neural-stem-cells-by-extracorporeal-shock-waves-after-spinal-cord-injury
#12
Dong-Chul Shin, Kee-Yong Ha, Young-Hoon Kim, Jang-Woon Kim, Yoo-Kyung Cho, Sang-Il Kim
STUDY DESIGN: Animal experimental study OBJECTIVES.: The purpose of this study is to investigate the effects of extracorporeal shock waves (ESWs) on endogenous neural stem cells (NSCs) proliferation after spinal cord injury (SCI). SUMMARY OF BACKGROUND DATA: Exogenous stem cell transplantation for SCI still has many limitations to be addressed such as ideal cell sources, timing of transplantation, and fate of the transplanted cells. Moreover, the efficacy is another issue due to a peculiar pathologic condition in the chronic phase of SCI...
June 27, 2017: Spine
https://www.readbyqxmd.com/read/28654890/wogonoside-inhibits-il-1%C3%AE-induced-catabolism-and-hypertrophy-in-mouse-chondrocyte-and-ameliorates-murine-osteoarthritis
#13
Qian Tang, Gang Zheng, Zhenhua Feng, Minji Tong, Jianxiang Xu, Zhiyan Hu, Ping Shang, Yu Chen, Chenggui Wang, Yiting Lou, Deheng Chen, Di Zhang, Majid Nisar, Xiaolei Zhang, Huazi Xu, Haixiao Liu
The inflammatory environment is correlated with extracellular matrix (ECM) degradation and chondrocyte hypertrophy in the development of osteoarthritis (OA). Previous studies have reported the anti-inflammatory effects of wogonoside in several diseases. In the present study, we investigated the protective effects of wogonoside in relation to the development of OA and delineated the potential mechanism. In vitro, wogonoside decreased the production of pro-inflammatory cytokines like Nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor alpha (TNF-α), and interleukin-6 (IL-6)...
June 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28631466/enhancing-the-performance-of-polymer-solar-cells-by-using-donor-polymers-carrying-discretely-distributed-side-chains
#14
Xue Gong, Guangwu Li, Yang Wu, Jicheng Zhang, Shiyu Feng, Yahui Liu, Cuihong Li, Wei Ma, Zhishan Bo
Conjugated polymers with three components, P1-1 and P1-2, were prepared by one-pot Stille polymerization. The two-component polymer P1-0 is only composed of a 5-fluoro-6-alkyloxybenzothiadiazole (AFBT) acceptor unit and a 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...
July 19, 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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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