Complete Analysis of a Biologically Active Tetrapeptide: A Project Utilizing Thin-Layer Chromatography and Tandem Quadrupole Mass Spectrometry

2000 ◽  
Vol 77 (4) ◽  
pp. 503 ◽  
Author(s):  
David W. Dodsworth ◽  
Joseph W. LeFevre
Keyword(s):  
Mass Spectrometry ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Biologically Active ◽  
Complete Analysis ◽  
Quadrupole Mass ◽  
Quadrupole Mass Spectrometry ◽  
Layer Chromatography ◽  
Tandem Quadrupole

Phytochemical, Analytical and Medicinal Studies of Holoptelea integrifolia Roxb. Planch - A Review

2019 ◽  
Vol 5 (4) ◽  
pp. 270-277 ◽  
Author(s):  
Vijay Kumar ◽  
Simranjeet Singh ◽  
Ragini Bhadouria ◽  
Ravindra Singh ◽  
Om Prakash
Keyword(s):  
Liquid Chromatography ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
High Performance ◽  
Biologically Active ◽  
Toxicological Studies ◽  
Wide Range ◽  
Layer Chromatography

Holoptelea integrifolia Roxb. Planch (HI) has been used to treat various ailments including obesity, osteoarthritis, arthritis, inflammation, anemia, diabetes etc. To review the major phytochemicals and medicinal properties of HI, exhaustive bibliographic research was designed by means of various scientific search engines and databases. Only 12 phytochemicals have been reported including biologically active compounds like betulin, betulinic acid, epifriedlin, octacosanol, Friedlin, Holoptelin-A and Holoptelin-B. Analytical methods including the Thin Layer Chromatography (TLC), High-Performance Thin Layer Chromatography (HPTLC), High-Performance Liquid Chromatography (HPLC) and Liquid Chromatography With Mass Spectral (LC-MS) analysis have been used to analyze the HI. From medicinal potency point of view, these phytochemicals have a wide range of pharmacological activities such as antioxidant, antibacterial, anti-inflammatory, and anti-tumor. In the current review, it has been noticed that the mechanism of action of HI with biomolecules has not been fully explored. Pharmacology and toxicological studies are very few. This seems a huge literature gap to be fulfilled through the detailed in-vivo and in-vitro studies.

scholarly journals Neonatal Urine Screening Program in the Province of Quebec: Technological Upgrade from Thin Layer Chromatography to Tandem Mass Spectrometry

2021 ◽  
Vol 7 (1) ◽  
pp. 18
Author(s):  
Christiane Auray-Blais ◽  
Michel Boutin ◽  
Pamela Lavoie ◽  
Bruno Maranda
Keyword(s):  
Mass Spectrometry ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Clinical Symptoms ◽  
Screening Program ◽  
Compliance Rate ◽  
Inborn Errors ◽  
Organic Acidurias ◽  
Urine Screening ◽  
Layer Chromatography

The Quebec Neonatal Urine Screening Program was initiated in 1971 with overall screening inception of newborns in 1973. Forty-seven years later, over 3.5 million babies have been screened for up to 25 inborn errors of metabolism divided into two groups: (1) urea cycle disorders and organic acidurias; and (2) disorders of amino acid metabolism and transport. The main goal of this preventive genetic medicine program is the detection of treatable diseases before the onset of clinical symptoms. Urine specimens from 21-day-old babies are collected and dried on filter paper by parents at home. The participation is voluntary with a high compliance rate over the years (~90%). Specimens are analyzed by thin layer chromatography (TLC). The main objective of this evaluative research project was to assess the feasibility of a technological upgrade towards mass spectrometry. A 2.85-min flow injection method was devised, normal values established, and abnormal profiles confirmed using second-tier tests. The validated assays are sensitive, specific, and suitable for populational screening, as well as for high-risk screening laboratories. Triple H syndrome, which would not be detected in newborns by blood screening at two days of age was found to be positive in the urine of an affected patient.

Thin-layer chromatography and gas chromatography-mass spectrometry examination of shoe materials from patients with shoe dermatitis

2015 ◽  
Vol 72 (4) ◽  
pp. 248-252 ◽  
Author(s):  
Sri A. Febriana ◽  
Erik Zimerson ◽  
Cecilia Svedman ◽  
Winarto Haryadi ◽  
Pieter-Jan Coenraads ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Gas Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry ◽  
Layer Chromatography
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