26 Questions 6 Answers 0 Followers
Questions related from Heba Mohamed Fahmy
I'm preparing Cadmium sulfide nanoparticles using banana extract as a capping agent, after drying it, it looks like thin sheets, cannot be grinded as powder (The last time, it does not look like...
13 June 2023 3,661 1 View
I'm preparing niosome encapsulating a certain natural extract how can I caclulate the encapsulated dose which is equivalent to the free dose of that substance?
24 December 2018 6,574 3 View
Would someone tell me a successful simple protocol for DNA isolation from animal tissues , that gives reasonable yield and which is not costly and does not alter DNA structure ?
26 February 2018 9,066 6 View
I'm performing an experiment in which I inject IP a dose of o.2 mg /kg of reserpine for 14 days to produce a chronic model of depression, I want to start treatment, I read that I must give a dose...
23 February 2018 3,192 0 View
I want to treat rats with a certain drug loaded on a nanocarrier with a certain dose... The problem the i have.. That when converting my formulation to powder through air drying.. The yield is...
22 February 2018 5,128 3 View
For the induction of depression in rats using reserpine dissolved in traces of acetic acid and diluted with distilled water , should I prepare it fresh daily or can I used a stock, another...
06 February 2018 2,589 1 View
what is the best solvent for drug-loaded chitosan nanoparticle to be used in IP injection in rats ? the control group will receive normal saline IP
06 February 2018 3,175 1 View
I'm performing an experiment in which I will use thymoquinone for in vivo treatment rat....my control group will be IP injected with saline solution, I wonder what is the most suitable and safe...
06 February 2018 3,460 0 View
I will make an in vivo experiment in which I want to compare between the effect of a free drug and the same drug loaded on chitosan nanoparticles.. how can I calculate the dose of nanoparticles...
22 January 2018 7,853 1 View
What is the simple organism or cell type from which I can isolate its membrane and what is the best model to study the interaction of nanoparticles with cell membrane ?
17 January 2018 2,384 2 View
I will use protein extraction kit whose yield is from 10 to 100 micro, is this quantity enough to perform WAXS, SAXS or FTIR?
09 January 2018 1,383 1 View
How can we interpret these data: 1st case a significant decrease in MDA, H2o2 and a significant increase in SOD, while GSH and NO are not changed 2nd case A significant decrease in No, H2o2o, and...
27 December 2017 6,556 2 View
I need a suggestion for a cheap hydrophilic substance that gives high encapsulation efficiency when encapsulated in the core of DPPC liposome ?
04 December 2017 6,746 2 View
I evaluated the cytotoxicity of a Nano agent on normal lung cells, it showed cytotoxicity in a dose dependent matter (MTT) assay however no oxidative stress is showed neither DNA damage (comet...
23 November 2017 4,454 3 View
I was testing the cytotoxicity of a nano agent of cancerous cell, it showed cytotoxicity in dose dependent manner, it shows also DNA damage (comet assay) however, no oxidative stress is exhibited...
23 November 2017 9,424 3 View
I need simple protocols for collagen extraction from human placenta, rat tail, egg shell and rabbit skin
29 October 2016 1,584 5 View
Can any one tell me what is the best technique that can detect the concentration of thymoquinone In biological tissues ?
23 August 2016 6,779 5 View
Can DPPC liposomes prepared by thin layer hydration method exihibit positive values of zeta potential? At what conditions?
23 May 2016 3,075 6 View
I need a paper describing the method of synthesis of copper nanoparticles without the use of inert gas
14 May 2016 3,404 4 View
Has anyone tried before to do intranasal injection in rats ? I need a photo or video illustrating this process Thank you
24 February 2016 6,619 1 View
If anyone prepared before copper nanoparticles from copper chloride and ascorbic acid, I tried the method different times but always I get copper oxide, how to get rid of this or how to prevent...
22 February 2016 6,043 7 View
Plz provide the details of the method as i tried the method of Aebi 1984 and it didn't succeed with me
03 December 2015 8,863 9 View
Why sensory response is not detected at high level of stimulation and only motor response occurs?
17 October 2015 6,901 0 View
How can we explain the significant decrease in GST activity, while there is no oxidative stress (significant decrease in MDA levels) and the GSH levels are normal? Also, SOD levels showed...
29 May 2015 543 4 View
I want to preserve rat tissues for oxidative stress analysis, for how long can I preserve it in -20 degree ?
01 December 2014 6,009 5 View
I need a simple protocol to do cell fractionation for breast cancer: normal and malignant tissues.
08 May 2014 5,923 0 View
