To develop a method for the rapid isolation of rat RPE cells with high yield and maintain its epithelial state in modified culture system.
 
  The eyeballs were incubated with dispase. The retina was isolated with RPE attached and cut into several pieces. Following a brief incubation in growth medium, large RPE sheets can be harvested rapidly. RPE cells were divided into four groups and cultured for several weeks, that is, (1) in cell culture dishes with 10% FBS containing medium (CC dish-FBS), (2) in petri dishes with 10% FBS containing medium (Petri dish-FBS), (3) in cell culture dishes with N2 and B27 containing medium (CC dish-N2B27), and (4) in petri dishes with N2 and B27 containing medium (Petri dish-N2B27). Morphological and biological characteristics were investigated using light microscopy, Q-PCR, and western blot.
 
  The retina would curl inwardly during the growth medium incubation period, releasing RPE sheets in the medium. Compared with low density group (5,000 cells/cm
  ), RPE cells plated at hih high yield and maintenance of its epithelial morphology in the petri dish-N2B27 condition.Many chemical routes have been proposed to immobilize peptides on biomedical device surfaces, and in particular, on dental implants to prevent peri-implantitis. While a number of factors affect peptide immobilization quality, an easily controllable factor is the chemistry used to immobilize peptides. These factors affect peptide chemoselectivity, orientation, etc., and ultimately control biological activity. Using many different physical and chemical routes for peptide coatings, previous research has intensely focused on immobilizing antimicrobial elements on dental implants to reduce infection rates. Alternatively, our strategy here is different and focused on promoting formation of a long-lasting biological seal between the soft tissue and the implant surface through transmembrane, cell adhesion structures called hemidesmosomes.  https://www.selleckchem.com/products/ici-118551-ici-118-551.html  For that purpose, we used a laminin-derived call adhesion peptide. However, the effect of different immobilization chemistries on cell adhesion peptide activity is vastly unexplored but likely critical. Here, we compared the physiochemical properties and biological responses of a hemidesmosome promoting peptide immobilized using silanization and copper-free click chemistry as a model system for cell adhesion peptides. Successful immobilization was confirmed with water contact angle and X-ray photoelectron spectroscopy. Peptide coatings were retained through 73 days of incubation in artificial saliva. Interestingly, the non-chemoselective immobilization route, silanization, resulted in significantly higher proliferation and hemidesmosome formation in oral keratinocytes compared to chemoselective click chemistry. Our results highlight that the most effective immobilization chemistry for optimal peptide activity is dependent on the specific system (substrate/peptide/cell/biological activity) under study. Overall, a better understanding of the effects immobilization chemistries have on cell adhesion peptide activity may lead to more efficacious coatings for biomedical devices.
  Older adults suffering partial tooth loss may need additional intervention strategies other than natural tooth replacement alone to improve their nutritional status. This study aimed to design and develop a habit-based tailored dietary intervention and to assess the feasibility and acceptability of the intervention, in conjunction with natural tooth replacement, amongst partially dentate older adults.
 
  The design and development of the dietary intervention (phase 1) consisted of analysis of the target population's dietary intake and qualitative research through focus groups with community-dwelling older adults (aged 65 years and over). The dietary intervention consisted of forming three healthy dietary habits around fruits and vegetables, wholegrains and healthy proteins. Feasibility of the intervention was then tested amongst older adults who had recently completed dental treatment for natural tooth replacement in a small non-randomised single arm study (phase 2). The principal feasibility outcome was thesidered the intervention acceptable and useable as both the evaluation questionnaire and qualitative interview results were overwhelmingly positive. As a supporting outcome measure, strong intervention compliance was also achieved. Screening procedures were accepted but additional recruitment strategies (e.g. incorporation of home study visits or recruitment via posters advertisement) may benefit future study enrolment and retention.
 
  Phase 1 and phase 2 findings have allowed for an iterative, user-driven intervention to be developed and refined for a randomised control study to evaluate the intervention's effectiveness.
 
  ISRCTN66118345.
 ISRCTN66118345.The COVID-19 is causing not only deaths and fear but also economic and social harm across the globe. Lockdowns, travel restrictions, quarantines, social distancing, and other strict public health measures are playing their part in delaying the spread of infection, but a safe and potent vaccine, effective therapeutics, point-of-care diagnostics, and other health products are desperately needed because it may not be practically possible for governments to extend these measures for an indefinite period of time. On March 23, Costa Rica submitted a proposal to the Director-General of the World Health Organization for the creation of a global pooling mechanism in order to facilitate access to and use of intellectual property, trade-secret know-how, regulatory data, cell lines, product blueprints, and other proprietary data for technologies that are useful for the detection, prevention, control, and treatment of the COVID-19 pandemic. This study critically evaluates Costa Rica's proposal and endeavors to briefly answer the following questions Why Costa Rica's proposal deserves serious consideration? To what extent this proposal addresses some of the key concerns related to the COVID-19? To what extent this proposal is practically feasible?
  Most pharmacists agree that continuing education (CE) programs positively affect their practice and increase their knowledge, with computer-based courses being their preferred type of CE (60.6%). The route to using medical e-services and e-learning is not straightforward. High setup costs and time commitments to sustain quality are issues brought up in this respect. Therefore, the objectives of this study were to validate the general confidence with computer use (GCWCU) scale and assess computer literacy and its associated factors among Lebanese pharmacists.
 
  This cross-sectional study was conducted, using a random sample of Lebanese pharmacists from all districts of Lebanon. The general confidence with computer use (GCWCU) scale was used to assess computer literacy.
 
  This study enrolled 628 (83.73%) pharmacists. The GCWCU items converged over two factors (Cronbach's alpha = 0.716). A higher GCWCU was associated with the ease of access to the Order of Pharmacists of Lebanon e-library (beta = 2.58), owning a tablet (beta = 2.