Synthesis, Radioiodination and Biological distribution of 5-(5-(tributylstannyl) benzofuran-2-yl) pyridin-2-amine as an amyloid imaging agent
Published on: 26th December, 2017
OCLC Number/Unique Identifier: 7317576309
In this work an efficient method developed for the synthesis of 125I-benzofuran-2-yl) pyridin-2-amine (125IBPA), followed by radioiodination with 125I by using Chloramine-T at pH 8. The reaction proceeds within 10 min at room temperature (20-25°C). The radiochemical yield determined by Thin-Layer Chromatography (TLC) using hexane:ethyl acetate (1:6 v/v) and the purity analyzed by high-performance liquid chromatography using a reversed-phase RP18column and acetonitrile:0.1 M ammonium bicarbonate (pH 7.5) (1:1) as the mobile phase at a flow rate of 1 ml×min−1. The radiochemical yield using aH2O2 oxidant found equal to 96.5% with a radiochemical purity of 125I-BPA of over 96.5%. The biodistribution data in normal mice indicated a high initial uptake of 6.54±0.10 (% ID/g±SD) in the brain within 30 min post-injection. These results promote a further the use of 125I-BPA as a novel agent for brain imaging.
Rapid determination of PCDDs, PCDFs and DL-PCBs in foods, feeding stuffs and vegetable oils using new modified acid silica
Published on: 5th January, 2023
Polychlorinated dibenzo-p-dioxins, dibenzofurans and dioxin-like polychlorinated biphenyls are persistent organic pollutants (POPs), which in recent years received huge attention due to their extreme stability, high potential toxicity and bioaccumulation in food chains. The main source of human exposure to these compounds is discovered in foods of animal origin, especially foods rich in fat. The target of the present study was to set up an analytical method for the determination of PCDDs/PCDFs and DL-PCB in vegetable oils, sunflower meals, sunflower seeds, rapeseeds and milk powder. The first step consisted of a semi-automatic Soxhlet extraction for 3 hours, by using a mixture of Hexane: Acetone – 80:20, followed by acid digestion with 55% acid silica and filtration. After concentration, the extract is purified on a multilayer column (silica gel, silica-KOH, silica-H2SO4 anhydrous Na2SO4) followed by an alumina column separation in two fractions (first fraction containing PCDDs/PCDFs and second containing only PCBs). The purified extract was then analyzed by GC/MS/MS. The newly developed approach in our lab was capable to reduce the overall time of sample preparation to seven hours/ per sample. Since the method shows good mean recoveries for all labeled congeners spiked in the samples (for PCDDs/PCDFs – 80% - 110%, for DL-PCBs – 70% - 85%), we assumed the absence of overestimation or underestimation in the analyzed samples.
Search by University/Institution
Enter your University/Institution to find colleagues at HSPI.
Ensuring author's satisfaction with
- Friendly and hassle-free publication process
- Less production time of articles
- Constructive peer-review
- Enhancing journal reputation
- Regular feedback system
- Quick response to authors' queries
Most Viewed Keywords
- Smart cities
- Hypertension
- Orbital floor fracture
- Hip
- Intra ocular pressure
- Bouveret syndrome
- Renal replacement therapy
- Case report
- Oral lichen planus
- Masquelet
- Intestinal obstruction
- COVID-19 pandemic
- Eosinophilic esophagitis
- Meigs syndrome
- Arterial blood gas
- Twins
- Tracheotomy
- Reverse phase
- Long COVID
- Adenocarcinoma of Esophagogastric Union (AEG)
Search Articles by Country
Get all latest articles in all Heighten Science Publications Inc journals by country.
Testmonials
I really liked the ease of submitting my manuscript in the HSPI journal. Further, the peer review was timely completed and I was communicated the final decision on my manuscript within 10 days of submission which is really appreciable. I strongly recommend all the scientists and researchers to submit their work in this journal”
Abu Bashar
Many thanks for publishing my article in your great journal and the friendly and hassle-free publication process, the constructive peer-review, the regular feedback system, and the Quick response to any queries.
Azab Elsayed Azab
I would like to thank JPRA for taking this decision. I understand the effort it represents for you. I'm truly happy to have the paper published in JPRA. And I'll certainly consider JPRA for my next publications as I was satisfied of the service provided, the efficiency and promptness of the interactions we had.
Emmanuel BUSATO
In 2017, I submitted a manuscript to the journal Archives of Biotechnology and Biomedicine belonging to Heighten Science Publications Corporation. Within one week I already received the response from the editor. All processing steps were really fast so in terms of a speedy publication I can particularly recommend the journal Archives of Biotechnology and Biomedicine. The responsible contact person of the journal was always available, which gives a trustworthy impression to the author. Also the peer review process was clear and constructive. So from my experience with Heighten Science Publications Corporation I can recommend publishing there.
University of Tubingen, Germany
Yvonne Mast
"This is my first time publishing with the journal/publisher. I am impressed at the promptness of the publishing staff and the professionalism displayed. Thank you for encouraging young researchers like me!"
Ajite Kayode
“It was a delightful experience publishing my manuscript with the Clinical Journal of Obstetrics and Gynecology. They offered me lots of opportunities I never had from most publishing houses and their prompt services are greatly appreciated.”
Asafo Jones
In my opinion, you provide a very fast and practical service.
Ahmet Eroglu
The service is nice and the time of processing the application is fast.
Department of Neurosurgery, Queen Elizabeth Hospital, Hong Kong
Long Ching
Great, thank you! It was very efficient working w/ your group. Very thorough reviews (i.e., plagiarism, peer, etc.). Would certainly recommend that future authors consider working w/ your group.
David W Brett
Your service is excellent. Processing and editing were very fast. I hope to publish more of my works in your journal.
Ausraful Islam
