نتایج جستجو برای: pamam

تعداد نتایج: 900  

2015
Tianda Wang Sheng Yang Lei Wang Hailan Feng

The occlusion of dentinal tubules is an effective method to alleviate the symptoms caused by dentin hypersensitivity, a significant health problem in dentistry and daily life. The in situ mineralization within dentinal tubules is a promising treatment for dentin hypersensitivity as it induces the formation of mineral on the sensitive regions and occludes the dentinal tubules. This study was car...

Journal: :Journal of materials chemistry. B 2014
Km Gattás-Asfura M Valdes E Celik Cl Stabler

The microencapsulation of cells has shown promise as a therapeutic vehicle for the treatment of a wide variety of diseases. While alginate microcapsules provide an ideal cell encapsulation material, polycations coatings are commonly employed to enhance stability and impart permselectivity. In this study, functionalized hyperbranched alginate and dendrimer polymers were used to generate discreet...

2013
Guanhua Li Zuojun Hu Henghui Yin Yunjian Zhang Xueling Huang Shenming Wang Wen Li

The application of RNA interference techniques is promising in gene therapeutic approaches, especially for cancers. To improve safety and efficiency of small interfering RNA (siRNA) delivery, a triblock dendritic nanocarrier, polyamidoamine-polyethylene glycol-cyclic RGD (PAMAM-PEG-cRGD), was developed and studied as an siRNA vector targeting the human ether-à-go-go-related gene (hERG) in human...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه لرستان - دانشکده علوم پایه 1390

در نخستین بخش از این کار تحقیقاتی، سه نوع نانومواد هیبریدی به عنوان نانوکاتالیست تهیه شد. ابتدا کوپلیمر خطی- دندریتیکی نوع aba ، که در آن قطعهb شامل پلی اتیلن گلایکول، و قطعه a شامل بخش پلی آمیدوآمین است (pamam-peg-pamam) را تانسل دوم سنتز کرده، سپس یک ترکیب که دارای حلقه های آروماتیک فراوان بود را به گروه های عاملی آمین انتهایی نسل دوم کوپلیمر خطی- دندریتیکی سنتز شده و وصل شد (g2-pt) . این گرو...

بهنام وکیلی حسن ایزانلو حسین آقابابایی, حمیدرضا تشیعی شهرام نظری غریب مجیدی, محمد احمدی جبلی محمد خزائی وحید وزیری راد

زمینه و هدف: هدف از این مطالعه بررسی اثرات ضدّباکتریایی دندریمر پلی‌پروپیلن‌ایمین نسل دوم (PPI-G2) و پلی‌آمیدوآمین نسل چهارم (PAMAM-G4) بر کلبسیلا اوکسی‌توکا، سودوموناس آئروژینوزا و پروتئوس میرابیلیس در محیط آزمایشگاهی بود. مواد و روش‌ها: غلظت‌های مختلفی از دندریمر PPI-G2 و PAMAM-G4 بر روی دیسک‌های بلانک تلقیح شد و در محیط کشت مولر هینتون آگار قرار داده شدند. با تلقیح باکتری‌ها مطابق با غلظت اس...

Journal: :Journal of Radioanalytical and Nuclear Chemistry 2022

Abstract PAMAM dendrimers modified silica gel terminated phenylphosphonic acid-amide moieties (Si-6G PAMAM-PPAAM) was prepared for uranium(VI) adsorption from aqueous solutions by batch and fixed-bed column methods. The experimental results showed that the maximum capacity 434.78 mg g −1 . Equilibrium isotherm data obeyed Langmuir model. Kinetic followed pseudo-second order model thermodynamic ...

2016
Hong-Ji Sun Yan Wang Tong Hao Chang-Yong Wang Qi-Yu Wang Xiao-Xia Jiang

Glutathione (GSH) depletion has been an important contributor to the dysfunction of dopamine neurons. Polyamidoamine-GSH (PAMAM-GSH) was synthesized and the delivery effect of GSH into PC12 cells was tested. MTT assessment for cytotoxicity and reactive oxygen species (ROS) as well as nitrite oxide (NO) and intracelluar superoxide dismutase (SOD) detection for antioxidative ability were performe...

Journal: :Chemical communications 2013
Stephen M Bromfield Paola Posocco Maurizio Fermeglia Sabrina Pricl Julián Rodríguez-López David K Smith

We report a competition assay using our recently reported dye Mallard Blue, which allows us to identify synthetic heparin binders in competitive media, including human serum - using this we gain insight into the ability of PAMAM dendrimers to bind heparin, with the interesting result that low-generation G2-PAMAM is the preferred heparin binder.

2015
David E Jones Hamidreza Ghandehari Julio C Facelli

The use of data mining techniques in the field of nanomedicine has been very limited. In this paper we demonstrate that data mining techniques can be used for the development of predictive models of the cytotoxicity of poly(amido amine) (PAMAM) dendrimers using their chemical and structural properties. We present predictive models developed using 103 PAMAM dendrimer cytotoxicity values that wer...

Journal: :Environmental science & technology 2008
Mamadou S Diallo Wondwossen Arasho James H Johnson William A Goddard

Chelating agents are widely employed in many separation processes used to recover uranyl [U(VI)] from contaminated aqueous solutions. This article describes an experimental investigation of the binding of U(VI) to poly(amidoamine) [PAMAM] and poly(propyleneimine) [PPI] dendrimers in aqueous solutions. We combine fluorescence spectroscopy with bench scale ultrafiltration experiments to measure t...

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