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Oct 4

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https://www.readbyqxmd.com/read/28549681/a-new-cell-to-cell-interaction-model-for-epithelial-microfold-cell-formation-and-the-enhancing-effect-of-epidermal-growth-factor
#1
Puwich Chaikhumwang, Dachrit Nilubol, Angkana Tantituvanont, Pithi Chanvorachote
The formation of epithelial microfold (M) cells is mediated through cell-to-cell interactions between enterocytes and lymphocytes. Based on this concept, we developed a cell-to-cell model by encouraging interactions between enterocyte C2BBe1 and Raji B cells through a preincubation approach. Raji B cells and C2BBe1 cells were allowed to interact in detached condition for 2h at ratios of 1:1, 1:2 and 1:4 and then plated in culture plates. Monocultured C2BBe1 cells were used as the control. Flow cytometric analysis of the M cell-specific marker clusterin revealed that the optimum ratio of Raji B to C2BBe1 cells to obtain the maximum number of M cells was 1:1...
May 23, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28548649/aqueous-humor-endothelin-1-and-total-retinal-blood-flow-in-patients-with-non-proliferative-diabetic-retinopathy
#2
L-A Khuu, F Tayyari, J M Sivak, J G Flanagan, S Singer, M H Brent, D Huang, O Tan, C Hudson
PurposeThe purpose of this study was to determine the association between aqueous ET-1 levels and total retinal blood flow (TRBF) in patients with non-insulin-dependent type 2 diabetes mellitus (T2DM) and early non-proliferative diabetic retinopathy (NPDR).Patients and methodsA total of 15 age-matched controls and 15 T2DM patients with NPDR were recruited into the study. Aqueous humor (~80-120 μl) was collected before cataract surgery to measure the levels of ET-1 using suspension multiplex array technology...
May 26, 2017: Eye
https://www.readbyqxmd.com/read/28546007/development-and-validation-of-the-halt-hcc-score-to-predict-mortality-in-liver-transplant-recipients-with-hepatocellular-carcinoma-a-retrospective-cohort-analysis
#3
Kazunari Sasaki, Daniel J Firl, Koji Hashimoto, Masato Fujiki, Teresa Diago-Uso, Cristiano Quintini, Bijan Eghtesad, John J Fung, Federico N Aucejo, Charles M Miller
BACKGROUND: Tumour morphological criteria for determining the appropriateness of liver transplantation in patients with hepatocellular carcinoma poorly estimate post-transplantation mortality. The aim of this study was to develop and assess the utility of a continuous risk score in predicting overall survival following liver transplantation for hepatocellular carcinoma. METHODS: We did a retrospective cohort analysis to develop a continuous multivariable risk score for assessment of overall survival following liver transplantation for hepatocellular carcinoma...
May 22, 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28545414/the-observation-during-small-incision-lenticule-extraction-for-myopia-with-corneal-opacity
#4
Shaowei Zhang, Haipeng Xu, Ke Zheng, Jing Zhao, Weijun Jian, Meiyan Li, Xingtao Zhou
BACKGROUND: To evaluate the feasibility and efficacy of small incision lenticule extraction (SMILE) in the treatment of myopia with corneal opacity. METHODS: To evaluate the treatment of myopia with corneal opacity, 9 patients (4 males, 5 females) who underwent SMILE were enrolled in this prospective clinical study. One eye of each patient was treated. The results of laser scanning and lenticule extraction were observed during the surgery, and the surgical videos were again reviewed after surgery...
May 25, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28543855/theoretical-studies-of-the-copper-gyromagnetic-factors-for-three-novel-cu-2-coordination-polymers-with-bi-triazole-ligand
#5
Li-Na Wu, Shao-Yi Wu, Li-Juan Zhang, Xu-Sheng Liu, Li Peng
The copper electron paramagnetic resonance (EPR) gyromagnetic factors are theoretically studied for three novel Cu(2+) coordination polymers [Cu(XL)(NO3 )2 ]n (1), {[Cu(XL)(4,4'-bpy)(NO3 )2 ]•CH3 CN}n (1a) and {[Cu(XL)3 ](NO3 )2 •3.5H2 O}n (2) with bi-triazole ligand (XL)=N,N'-bicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxdiimide bi(1,2,4-triazole) from the high order perturbation calculations of the g factors for a rhombically elongated octahedral 3d(9) group. The order (1 ≤ 1a < 2) of gz can be illustrated by the dominant second-order perturbation term roughly proportional to the square of the covalency factor N...
May 25, 2017: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/28540635/wire-bias-in-coronary-measurement-using-optical-coherence-tomography
#6
Edward James Danson, Peter Hansen, Ravinay Bhindi
OCT is widely used for accurate coronary stent sizing; however, the impact of coronary tortuosity or guide wire weight on the accuracy of OCT in assessing coronary dimensions is not known. This study sought to determine whether guide wire properties impact on coronary diameter and length estimation by optical coherence tomography (OCT) in tortuous segments of coronary artery. OCT coronary diameters were determined in selected patients with tortuous arteries before and after removal of a supportive guide wire to obtain unobscured images...
May 24, 2017: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/28536015/two-year-vascular-responses-to-drug-eluting-stents-with-biodegradable-polymer-versus-durable-polymer-an-optical-coherence-tomography-sub-study-of-the-next
#7
Yosuke Katayama, Takashi Kubo, Takashi Akasaka, Yasushi Ino, Kazuo Kimura, Hiroyuki Okura, Toshiro Shinke, Keiichi Igarashi, Kazushige Kadota, Ken Kozuma, Kengo Tanabe, Yoshihisa Nakagawa, Toshiya Muramatsu, Yoshihiro Morino, Takeshi Kimura
BACKGROUND: This study aimed to compare very late vascular response after stent implantation between everolimus-eluting stent (EES) with a thin, non-adhesive, durable, biocompatible fluorinated polymer and biolimus-eluting stent (BES) with a biodegradable polymer by optical coherence tomography (OCT). METHODS AND RESULTS: In the NOBORI-BES Versus XIENCE V/PROMUS-EES Trial (NEXT), a formal OCT substudy investigated 48 patients (27 EES-treated lesions in 23 patients and 28 BES-treated lesions in 25 patients) with 2-year (18-30 months) follow-up imaging at 18 centers...
May 20, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28534244/proposal-of-a-simple-optical-coherence-tomography-based-scoring-system-for-progression-of-age-related-macular-degeneration
#8
Jianqin Lei, Siva Balasubramanian, Nizar Saleh Abdelfattah, Muneeswar G Nittala, SriniVas R Sadda
PURPOSE: To develop a simple, clinically practical, optical coherence tomography (OCT)-based scoring system for early age-related macular degeneration (AMD) to prognosticate risk for progression to late AMD. METHODS: We retrospectively reviewed OCT images (512 × 128 macular cube, Cirrus) from 138 patients diagnosed of early AMD in at least one eye and follow-up of at least 12 months. For patients with early AMD in both eyes, only the right eye was chosen as the study eye for longitudinal assessment...
May 22, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28533192/in-vitro-effects-of-reprogramming-factors-on-the-expressions-of-pluripotent-genes-and-cd34-gene-in-human-acute-promyelocytic-leukemia-hl-60-cells
#9
Liang-Fang Zhu, Min Xiao, Yong-Quan Chen, Ling-Yan Wang, Xiao-Feng Luo, Xiao-Hong Yuan, Jin-Hua Ren, Zhi-Zhe Chen, Jian-Da Hu, Ting Yang
OBJECTIVE: Our study aims to explore the in vitro effects of reprogramming factors on the expressions of pluripotent genes and CD34 gene in HL-60 cells. METHODS: According to the construction of retroviral vector LV-OSCK of reprogramming factors (Oct-4, Sox2, Klf4, c-Myc), 293T cells were transfected to detect virus titer. The endogenous pluripotent genes (Oct4, SOX2, c-Myc and Klf4) and CD34 mRNA and protein expressions were detected by AP staining, immunofluorescence staining, qRT-PCR and flow cytometry...
May 19, 2017: Genomics
https://www.readbyqxmd.com/read/28531375/mouse-minipuberty-coincides-with-gonocyte-transformation-into-spermatogonial-stem-cells-a-model-for-human-minipuberty
#10
Ruili Li, Amanda Vannitamby, Sarah S K Yue, David Handelsman, John Hutson
As the transient postnatal hormone surge in humans, known as 'minipuberty', occurs simultaneously with key steps in germ-cell development, we investigated whether similar changes occur in the hypothalamic-pituitary-testicular axis of neonatal mice at a time that would coincide with gonocyte transformation into spermatogonial stem cells (SSC). Serum and testes were collected from C57Bl/6 mice at embryonic Day 17 (E17), birth (postnatal Day 0; P0) and daily until P10. Serum FSH and testosterone levels in both serum and testes were analysed and gene expression of FSH receptor (Fshr), luteinising hormone receptor (Lhr), anti-Müllerian hormone (Amh), octamer-binding transcription factor 4 (Oct-4), membrane type 1 metalloprotease (Mt1-mmp), proto-oncogene C-kit and promyelocytic leukaemia zinc finger (Plzf ) was quantified by real-time polymerase chain reaction...
May 23, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28529558/sirna-mediated-knockdown-of-id1-disrupts-nanog-and-oct-4-mediated-cancer-stem-cell-likeness-and-resistance-to-chemotherapy-in-gastric-cancer-cells
#11
Linlin Li, Xiaoyong Wei, Baofeng Wu, Yuanli Xiao, Mingzhu Yin, Qiaohong Yang
DNA-binding protein inhibitor ID-1 (ID1) serves an essential role in tumor progression, and the self-renewal and pluripotency of embryonic stem cells. However, the effect of ID1 on the stemness and cancer stem cell (CSC)-like properties of gastric adenocarcinoma cells remains to be elucidated. In the present study, effective ID1 knockdown was achieved in gastric cancer (GC) cells using small interfering RNA, and the self-renewal ability and cisplatin (DDP) sensitivity of GC cells was subsequently examined. ID1 knockdown in the MKN-28 and MGC-803 cell lines was demonstrated to significantly suppress colony formation (P=0...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28526493/improving-comfort-around-dying-in-elderly-people-a-cluster-randomised-controlled-trial
#12
Kim Beernaert, Tinne Smets, Joachim Cohen, Rebecca Verhofstede, Massimo Costantini, Kim Eecloo, Nele Van Den Noortgate, Luc Deliens
BACKGROUND: Over 50% of elderly people die in acute hospital settings, where the quality of end-of-life care is often suboptimum. We aimed to assess the effectiveness of the Care Programme for the Last Days of Life (CAREFuL) at improving comfort and quality of care in the dying phase in elderly people. METHODS: We did a cluster randomised controlled trial in acute geriatric wards in ten hospitals in Flemish Region, Belgium, between Oct 1, 2012, and March 31, 2015...
May 16, 2017: Lancet
https://www.readbyqxmd.com/read/28524134/-oct-morphometric-and-angiographic-parallels-between-different-variants-of-central-serous-chorioretinopathy
#13
I E Panova, T B Shaimov, V A Shaimova
Central serous chorioretinopathy (CSCR) is a frequent cause of vision deterioration. Often it is associated with type 1 neovascularization under the pigment retinal epithelium (RPE). Optical coherence tomography angiography (OCT-angiography) enables non-invasive and contrast-free detection of neovessels in any retinal layer, which makes the method appropriate for diagnostics in CSCR. AIM: to investigate OCT-morphometric and angiographic parallels between different CSCR courses. MATERIAL AND METHODS: The study included 37 patients with CSCR...
2017: Vestnik Oftalmologii
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/28522204/peg-interferon-plus-nucleotide-analogue-treatment-versus-no-treatment-in-patients-with-chronic-hepatitis-b-with-a-low-viral-load-a-randomised-controlled-open-label-trial
#15
Annikki de Niet, Louis Jansen, Femke Stelma, Sophie B Willemse, Sjoerd D Kuiken, Sebastiaan Weijer, Carin M J van Nieuwkerk, Hans L Zaaijer, Richard Molenkamp, R Bart Takkenberg, Maarten Koot, Joanne Verheij, Ulrich Beuers, Hendrik W Reesink
BACKGROUND: Antiviral treatment is currently not recommended for patients with chronic hepatitis B with a low viral load. However, they might benefit from acquiring a functional cure (hepatitis B surface antigen [HBsAg] loss with or without formation of antibodies against hepatitis B surface antigen [anti-HBs]). We assessed HBsAg loss during peg-interferon-alfa-2a (peg-IFN) and nucleotide analogue combination therapy in patients with chronic hepatitis B with a low viral load. METHODS: In this randomised controlled, open-label trial, patients were enrolled from the Academic Medical Center (AMC), Amsterdam, Netherlands...
May 15, 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28521888/clinical-significance-of-lipid-rich-plaque%C3%A2-detected-by-optical-coherence%C3%A2-tomography-a%C3%A2-4-year-follow-up-study
#16
Lei Xing, Takumi Higuma, Zhao Wang, Aaron D Aguirre, Kyoichi Mizuno, Masamichi Takano, Harold L Dauerman, Seung-Jung Park, Yangsoo Jang, Chong-Jin Kim, Soo-Joong Kim, So-Yeon Choi, Tomonori Itoh, Shiro Uemura, Harry Lowe, Darren L Walters, Peter Barlis, Stephen Lee, Amir Lerman, Catalin Toma, Jack Wei Chieh Tan, Erika Yamamoto, Krzysztof Bryniarski, Jiannan Dai, Thomas Zanchin, Shaosong Zhang, Bo Yu, Hang Lee, James Fujimoto, Valentin Fuster, Ik-Kyung Jang
BACKGROUND: Lipid-rich plaque (LRP) is thought to be a precursor to cardiac events. However, its clinical significance in coronary arteries has never been systematically investigated. OBJECTIVES: This study investigated the prevalence and clinical significance of LRP in the nonculprit region of the target vessel in patients undergoing percutaneous coronary intervention (PCI). METHODS: The study included 1,474 patients from 20 sites across 6 countries undergoing PCI, who had optical coherence tomography (OCT) imaging of the target vessel...
May 23, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28521634/chorionic-histiocytic-hyperplasia-is-associated-with-chronic-inflammatory-lesions-in-the-placenta
#17
Philip J Katzman, Leon A Metlay, Loralee A McMahon, Li LiQiong, Bin Zhang
Background Chorionic histiocytic hyperplasia (CHH) is a cellular proliferation at the base of the chorion that was identified by the authors in examining placentas for chronic chorioamnionitis (CC). This study is a retrospective review of cases diagnosed with CHH, describing its incidence alone and with associated lesions, and the immunophenotype of lesional cells. Design In this retrospective study, a laboratory information system search over a 34-month period using the key phrase "chorionic stromal" was performed...
June 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28521113/real-time-imaging-of-gap-progress-during-and-after-composite-polymerization
#18
J Hayashi, Y Shimada, J Tagami, Y Sumi, A Sadr
The aims of this study were to observe the behavior of composite and formation of gaps during and immediately after light polymerization using swept source optical coherence tomography (OCT) and to compare the interfacial integrity of adhesives in cavities through 3-dimensional (3D) image analysis. Forty tapered cylindrical cavities (4-mm diameter, 2-mm depth) were prepared in bovine incisors and restored using Bond Force (BF), Scotchbond Universal Adhesive (SBU), OptiBond XTR (XTR), or Clearfil SE Bond 2 (SE2), followed by Estelite Flow Quick flowable composite...
May 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28520639/wrinkled-vascularized-retinal-pigment-epithelium-detachment-prognosis-after-intravitreal-anti-vegf-therapy
#19
Delphine Lam, Oudy Semoun, Rocio Blanco-Garavito, Camille Jung, Diem T Nguyen, Eric H Souied, Gerard Mimoun
BACKGROUND/PURPOSE: Neovascular age-related macular degeneration (nAMD) is frequently associated with vascularized pigment epithelial detachment (v-PED). We observed a peculiar characteristic of v-PED characterized by small lacy folds of the retinal pigment epithelium, appearing as a wrinkled PED (w-PED) on spectral domain optical coherence tomography (SD-OCT). Our purpose was to describe the visual prognosis and number of intravitreal injections in w-PED compared with non-w-PED. METHODS: In this retrospective, case-control series, we reviewed retrospectively medical records of 52 eyes of 51 patients who were consecutively included between November 1 and 30, 2015 with a previous minimum 3-year follow-up...
May 16, 2017: Retina
https://www.readbyqxmd.com/read/28514814/-possibilities-and-limitations-of-oct-angiography-in-patients-with-central-serous-chorioretinopathy
#20
B Cakir, M Reich, S J Lang, A Bühler, A Stahl, D Böhringer, H Agostini, C Lange
Purpose Central serous chorioretinopathy (CSC) is a commonly acquired maculopathy characterized by the accumulation of subretinal fluid at the posterior pole. This study aims to analyze optical coherence tomography angiography (OCTA) findings in patients with acute and chronic CSC and to compare them to conventional imaging methods. Methods A series of 43 consecutive eyes of 29 patients diagnosed with CSC and 18 eyes of 9 healthy control subjects were included in this retrospective study. The OCTA images were assessed and compared to conventional fluorescence (FAG) and indocyanine green angiography (ICG)...
May 17, 2017: Klinische Monatsblätter Für Augenheilkunde
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