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https://www.readbyqxmd.com/read/28700649/autophagy-mediates-cell-cycle-response-by-regulating-nucleocytoplasmic-transport-of-pax6-in-limbal-stem-cells-under-ultraviolet-a-stress
#1
Maria Laggner, Andreas Pollreisz, Gerald Schmidinger, Ursula Schmidt-Erfurth, Ying-Ting Chen
Limbal stem cells (LSC) account for homeostasis and regeneration of corneal epithelium. Solar ultraviolet A (UVA) is the major source causing oxidative damage in the ocular surface. Autophagy, a lysosomal degradation mechanism, is essential for physiologic function and stress defense of stem cells. PAX6, a master transcription factor governing corneal homeostasis by regulating cell cycle and cell fate of LSC, responds to oxidative stress by nucleocytoplasmic shuttling. Impaired autophagy and deregulated PAX6 have been reported in oxidative stress-related ocular surface disorders...
2017: PloS One
https://www.readbyqxmd.com/read/28694836/metastatic-prostatic-stromal-sarcoma-a-challenging-diagnosis-on-fine-needle-aspiration-with-broad-differential-diagnosis
#2
Muhammad Siddique Khurram, Ghassan Tranesh, Ramen Sakhi, Ameer Hamza, Warda Ibrar, Roohi Bano
Prostatic stromal sarcomas (PSS) are rare solid organ mesenchymal sarcomas. PSS may pose difficult diagnostic challenges on fine needle aspiration biopsy. We report a 48-year-old man diagnosed with metastatic high grade prostatic stromal sarcoma by a CT-scan guided fine needle aspiration (FNA) biopsy of a right lower lung lobe nodule. We reviewed the literature on the epidemiologic, cyto-histological, and immunophenotypic findings and discussed the differential diagnosis for this rare entity.
2017: CytoJournal
https://www.readbyqxmd.com/read/28692684/comparative-cyto-histological-study-of-needle-tip-aspirates-and-entry-sites-after-intravitreal-injection-using-different-needle-types
#3
Lyubomyr Lytvynchuk, Andrij Sergienko, Iryna Savytska, Réka Albert, Carl Glittenberg, Susanne Binder, Goran Petrovski
A comparison of the cellular content of needle tip aspirates and entry sites after transconjunctival intravitreal injection (IVI) using different needle types was performed. White outbred rats and human cadaver eyes were used for IVI by hypodermic 27 gauge (G) and 30G needles, and spinal anesthesia Pencan 27G needles. Aspiration of vitreous for quantitative morphological and cell cultivation analysis, as well as cyto-histological analysis of aspirates and entry sites were carried out. The most common cells in the aspirates from all needle types were conjunctival epithelial-, ciliary body non-pigmented epithelial- and sclerocyte-like cells and granular proteins...
2017: PloS One
https://www.readbyqxmd.com/read/28690165/p53-mapkapk-2-and-caspases-regulate-nickel-oxide-nanoparticles-induce-cell-death-and-cytogenetic-anomalies-in-rats
#4
Quaiser Saquib, Sabry M Attia, Sabiha M Ansari, Abdullah Al-Salim, Mohammad Faisal, Abdulrahman A Alatar, Javed Musarrat, Xiaowei Zhang, Abdulaziz A Al-Khedhairy
The unique properties of nickel oxide nanoparticles (NiO-NPs) distinguish it from traditional nickel containing materials, and enable its industrial application as an advanced nanomaterial. Despite the benefits, the in vivo toxicological studies on NiO-NPs have been mainly focused on its pulmonary pathology. However, NiO-NPs exposure via oral route and its subsequent toxic effects in exposed animals are still lacking. Hence, we evaluated the NiO-NPs oral toxicity in male Wistar rats. NiO-NPs induced significant increase in chromosomal aberrations (CAs), micronuclei (MN) formation and, DNA damage in rats...
July 6, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28685798/cyto-colpo-histologic-correlation-about-an-analytical-study-of-120-colposcopies
#5
Olfa Slimani, Riadh Ben Temim, Tahar Makhlouf, Nabil Mathlouthi, Leila Attia
PROBLEM: Cervical cancer is the second gynecological cancer Tunisian women after breast. This is a sexually transmitted disease including the role of HPV has been proven. Cervical cancer screening is possible due to the accessibility of the cervix with a speculum examination and implementation of cervical smear. AIM OF THE WORK: To study the epidemiological and clinical data of patients, analyze the results of the Pap test, colposcopy and cervical biopsy staging are the lesions observed in colposcopy, compare the results of smears, colposcopy and cervical biopsy...
October 2016: La Tunisie Médicale
https://www.readbyqxmd.com/read/28682441/study-on-the-effect-of-integrin-%C3%AE-v%C3%AE-6-on-proliferation-and-apoptosis-of-cervical-cancer-cells
#6
D Liang, W Xu, Q Zhang, B-B Tao
OBJECTIVE: To analyze the influence of Integrin αVβ6 on proliferation and apoptosis of cervical cancer cells. PATIENTS AND METHODS: Fifty-two patients with benign cervical lesions, 55 cervical cancer patients, and 20 healthy controls were selected as research subjects. The positive expression rate of Integrin αVβ6 was detected in cervical tissue samples by immunohistochemistry. The relative expressions of the proliferation-related proteins, p53, PCNA, Ki-67, and TIPE2, and the apoptosis-related proteins, Cyto-C, AIF, caspase-3, Bag-1, Bcl-2, and p-Akt were measured by Western blot...
June 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28680122/inhibition-role-of-atherogenic-diet-on-ethyl-carbamate-induced-lung-tumorigenesis-in-c57bl-6j-mice
#7
Ting Chen, Lei Lu, Cai Xu, Xiaojing Lin, Yuet-Kin Leung, Shuk-Mei Ho, Xiong Z Ruan, Xuemei Lian
With emerging evidence connecting cholesterol dysregulation with disturbed pulmonary homeostasis, we are wondering if diet induced hypercholesterolemia would influence the susceptibility to chemical induced lung tumorigenesis in mice. Six to eight week-old male C57BL/6J mice were fed with either a high-cholesterol atherogenic diet (HCD) or matching normal diet (ND), respectively. Following 3 weeks diet adapting, a multi-dose intraperitoneal injections of ethyl carbamate (urethane, 1 g/kg body weight) were established and lung tumorigenesis assessments were taken after 15 weeks latency period...
July 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28672871/pamidronate-conjugated-biodegradable-branched-copolyester-carriers-synthesis-and-characterization
#8
Ewa Oledzka, Dagmara Pachowska, Katarzyna Orłowska, Joanna Kolmas, Agata Drobniewska, Ramona Figat, Marcin Sobczak
The need for development of comprehensive therapeutic systems, (e.g., polymer-apatite composites) as a bone substitute material has previously been highlighted in many scientific reports. The aim of this study was to develop a new multifunctional composite based on hydroxyapatite porous granules doped with selenite ions (SeO₃(2-)) and a biodegradable branched copolymer-bisphosphonate conjugate as a promising bone substitute material for patients with bone tumours or bone metastasis. A series of biodegradable and branched copolymer matrices, adequate for delivery of bisphosphonate in the bone-deficient area were synthesized and physico-chemically and biologically (cyto- and genotoxicity assays) characterized...
June 26, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28667023/autophagy-inflammasome-interplay-in-heart-failure-a-systematic-review-on-basics-pathways-and-therapeutic-perspectives
#9
Bonnie Chiu, Eugeniu Jantuan, Fan Shen, Brian Chiu, Consolato Sergi
Aging of the population contributes to the increasing prevalence of heart failure. Autophagy is an evolutionarily conserved process aiming to degrade both long-lived proteins and damaged or excessive cyto-organelles via the lysosomal-mediated pathway. Although autophagy is involved in the normal homeostasis of cardiovascular cells, upregulation of autophagy and its abnormal modulation by inflammation may lead to cardiovascular functional decline and heart failure. Despite major improvements in the prevention, diagnosis, and treatment of cardiovascular diseases, heart failure remains one of the major diagnostic and therapeutic challenges...
May 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28655711/long-noncoding-rna-foxd3-as1-regulates-oxidative-stress-induced-apoptosis-via-sponging-microrna-150
#10
Duo Zhang, Heedoo Lee, Jeffrey A Haspel, Yang Jin
The function of most human long noncoding RNAs (lncRNAs) remains unclear. Our studies identified a highly up-regulated mammalian lncRNA, FOXD3-AS1, known as linc1623 in mouse, in the setting of hyperoxia/reactive oxygen species (ROS)-induced lung injury. We found that ROS induced a robust expression of FOXD3-AS1 in mouse lung tissue. Functionally, FOXD3-AS1 promoted oxidative stress-induced lung epithelial cell death. In human lung epithelial cells, the microRNA-150 (miR-150) was identified to interact with FOXD3-AS1; this finding was confirmed using the luciferase reporter assays...
June 27, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28648817/modulatory-effect-of-silymarin-on-nuclear-factor-erythroid-2-related-factor-2-regulated-redox-status-nuclear-factor-%C3%AE%C2%BAb-mediated-inflammation-and-apoptosis-in-experimental-gastric-ulcer
#11
Walaa Arafa Keshk, Samer Mahmoud Zahran, Mohamed Alaa Katary, Darin Abd-Elaziz Ali
Non-steroidal anti-inflammatory drugs (NSAIDs) consumption has been commonly associated with gastric mucosal lesions including gastric ulcer. Silymarin (SM) is a flavonoid mixture with anti-oxidant and anti-inflammatory activities which explain its protective role against hepatic and renal injuries. However, its impact on gastric ulcer has not yet been elucidated. Thus we went further to investigate the potential protective effects of SM against indomethacin-induced gastric injury in rats. Pretreatment with SM (50 mg/kg orally) attenuated the severity of gastric mucosal damage as evidenced by decreasing ulcer index (UI) and ulcer score, improvement of disturbed histopathologicl features to be insignificant with those induced by the reference anti-ulcer drug...
June 22, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28641457/antiglioma-pseurotin-a-from-marine-bacillus-sp-fs8d-regulating-tumour-metabolic-enzymes
#12
Komal Anjum, Hongyun Bi, Weiyun Chai, Xiao-Yuan Lian, Zhizhen Zhang
Pseurotin A was isolated from a culture of marine Bacillus sp. FS8D and showed to be active against the proliferation of four different glioma cells with IC50 values of 0.51-29.3 μM. It has been found that pseurotin A downregulated the expression of tumour glycolytic enzymes pyruvate kinase M2 (PKM2) and lactate dehydrogenase 5 (LDH5) and upregulated the expression of pyruvate dehydrogenase beta (PDHB), adenosine triphosphate synthase beta (ATPB) and cytochrome C (Cyto-C), the important regulators for tricarboxylic acid cycle and oxidative phosphorylation...
June 23, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28635254/sudoku-like-lab-on-paper-cyto-device-with-dual-enhancement-of-electrochemiluminescence-intermediates-strategy
#13
Hongmei Yang, Yan Zhang, Li Li, Lina Zhang, Feifei Lan, Jinghua Yu
This paper describes the design and construction of a sudoku-like lab-on-paper platform, in which dual enhancement of reaction intermediates strategy was incorporated for multiplexed competitive electrochemiluminescence (ECL) cyto-assay. Benefiting from the sudoku-like structure, integrated multifunctions were obtained on such an elaborately devised platform, including specific reagents storage, multiple samples immobilization, residual automatic washing, and signal collection. By utilizing semicarbazide (SE) and silver nanoparticles (AgNPs) as dual enhancers, more ECL intermediates could be obtained in the graphene quantum dots (GQDs) and peroxydisulfate system, resulting in the production of more excited-state GQDs to emit light...
July 5, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28630529/effect-of-cyto-chemokine-degradation-in-effective-intercellular-communication-distances
#14
V K Gupta
Many complex biological processes such as cell differentiation, cell proliferation, and cell motility are governed by cell signaling. This mode of intercellular communication is of paramount importance for tissue function and ultimately for entire organism. In intercellular communication cells secrete signaling molecules such as cyto/chemokines which diffuse through the surrounding medium and eventually bind to receptors on other cells whereby the signal transduction is completed. An accurate estimation of the effective communication distances and the time scale on which signaling takes place are important for the interpretation of cell and organ physiology and ultimately in the effective and efficient chemotactically driven tissue engineering...
February 15, 2017: Physica A
https://www.readbyqxmd.com/read/28629357/xuefuzhuyu-decoction-protected-cardiomyocytes-against-hypoxia-reoxygenation-injury-by-inhibiting-autophagy
#15
Xiaowen Shi, Haiyan Zhu, Yuanyuan Zhang, Mingmei Zhou, Danli Tang, Huamin Zhang
BACKGROUND: XuefuZhuyu decoction (XFZY) is a well-known traditional Chinese herbal medicine for the treatment of various cardiovascular diseases, such as unstable angina pectoris and myocardial ischemia-reperfusion injury. However, the mechanism by which XFZY contributes to the amelioration of cardiac injury remains unclear. METHODS: H9C2 cells were cultured under the hypoxic condition for 10 h and reoxygenated for 2 h. In the presence of various concentrations of XFZY for 12 h, the cell viability was measured by MTT assay...
June 19, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28628137/-antagonistic-effect-of-quercetin-on-pm2-5-toxicity-in-the-rat-s-embryonic-development-in-vitro
#16
A Q Fan, J Q Feng, W Liu, M J Zhang, T Liu, Y L Zhou, Y J Xu
OBJECTIVE: To explore the antagonistic effect of quercetin on fine particulate matter (PM2.5)-induced embryonic developmental toxicity in vitro. METHODS: PM2.5 was collected on glass fiber filters by PM2.5 samplers during the heating period of Dec. 2015 to Mar. 2016 in an area of Haidian District, Beijing City. The sampled filters were cut into 1 cm×3 cm pieces followed by sonication. The PM2.5 suspension was filtered into a 10 cm glass dish through 8 layers of sterile carbasus and stored at -80 °C until freeze drying...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28627346/-study-on-rac1-mapk-erk-pathway-mediated-mechanism-and-role-in-rats-with-ventilator-induced-lung-injury
#17
Guanghua Tao, Linghui Pan, Ren Jing, Fei Lin, Huijun Dai, Wanyun Ge
OBJECTIVE: To investigate the role of Ras-related C3 botulinum toxin substrate 1/mitogen-activated protein kinase/extracellular signal-regulated kinase (Rac1/MAPK/ERK) signal pathway in rats with ventilator induced lung injury (VILI) and its mechanism. METHODS: Thirty Sprague-Dawley (SD) rats were randomly divided into spontaneous respiration group, normal tidal volume (VT) group and high VT group with 10 rats in each group. The rats in spontaneous respiration group were kept their spontaneous breathing...
March 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28624391/efficacy-of-melatonin-il-25-and-siil-17b-in-tumorigenesis-associated-properties-of-breast-cancer-cell-lines
#18
Gabriela Bottaro Gelaleti, Thaiz Ferraz Borin, Larissa Bazela Maschio-Signorini, Marina Gobbe Moschetta, Bruna Victorasso Jardim-Perassi, Guilherme Berto Calvinho, Mariana Castilho Facchini, Alicia M Viloria-Petit, Debora Aparecida Pires de Campos Zuccari
Mammary tumorigenesis can be modulated by melatonin, which has oncostatic action mediated by multiple mechanisms, including the inhibition of the activity of transcription factors such as NF-κB and modulation of interleukins (ILs) expression. IL-25 is an active cytokine that induces apoptosis in tumor cells due to differential expression of its receptor (IL-17RB). IL-17B competes with IL-25 for binding to IL-17RB in tumor cells, promoting tumorigenesis. This study purpose is to address the possibility of engaging IL-25/IL-17RB signaling to enhance the effect of melatonin on breast cancer cells...
June 14, 2017: Life Sciences
https://www.readbyqxmd.com/read/28618997/vdac1-as-a-player-in-mitochondria-mediated-apoptosis-and-target-for-modulating-apoptosis
#19
Varda Shoshan-Barmatz, Yakov Krelin, Quan Chen
The voltage-dependent anion channel 1 (VDAC1), an outer mitochondria membrane protein, functions as a mitochondrial governor, controlling transport of metabolites in and out of the mitochondria and energy production, while also coordinating glycolysis and oxidative phosphorylation (OXPHOS). . VDAC1 plays a key role in mitochondria-mediated apoptosis by functioning in the release of apoptotic proteins located in the inter-membranal space (IMS) and due to its association with pro- and anti-apoptotic proteins...
June 16, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28612331/isolation-and-characterization-of-trophoblasts-from-enzymatic-explants-of-human-term-placenta
#20
Tamara D Kolokoltsova, Irina N Saburina, Irina M Zurina, Anastasia A Gorkun, Nastasia V Kosheleva, Vadim S Repin, Rimma A Poltavtseva, Gennady T Sukhikh
In the present study, we describe a new method of isolation and culture of human villous and extravillous trophoblasts from term placenta. The cultivation of trypsinized placental villous tissue explants, followed by the isolation of cells from outgrowth islets allows for obtaining a cytotrophoblast subpopulation that is free from contamination by other cell types. Compared to other methods, our protocol is mild, simple and effective, does not request costly reagents and provides isolation of the mononuclear cytotrophoblast cell populations free from contamination by other types of placental cells...
June 13, 2017: Human Cell
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