Enhancement of 5-fluorouracil efficacy in colorectal cancer cells through thymidylate synthase inhibition by sodium propionate.

5-Fluorouracil (5-FU) is a cornerstone chemotherapeutic agent commonly employed in colorectal cancer (CRC) treatment. Prolonged use of 5-FU can trigger drug resistance, primarily through the upregulation of thymidylate synthase (TS). Consequently, strategies targeting TS suppression could enhance 5-FU's therapeutic potential in resistant CRC cases.

A novel dried blood spots analysis combined with on-spot reaction for determination of trimethylamine N-oxide and its related compounds.

The application of dried blood spots in clinical research is becoming increasingly popular owing to its convenient collection, storage, and transportation compared to that of conventional biological samples. The potential of trimethylamine N-oxide and its related compounds as biomarkers for various cardiovascular diseases, such as atherosclerosis, stroke, thrombosis, and heart failure, was recently highlighted, which was the driving force behind the development of an analytical method to identify trimethylamine N-oxide and eight related compounds in dried blood spots. In the proposed method, a novel "on-spot reaction" approach was introduced to overcome the low loading efficiency of trimethylamine in dried blood spots.

Development and investigation of a QuEChERS-based method for determination of phthalate metabolites in human milk.

Phthalates are commonly used as plasticizers and are known as risk factors toward several conditions such as cancer, birth defects, and endocrine disruption. Biomonitoring of phthalates is necessary to assess the potentially harmful effects of long-term exposure. In this work, we have developed a novel QuEChERS method to determine eight phthalate metabolites-mono-(3-carboxypropyl) phthalate, mono-(2-ethyl-5-carboxypentyl) phthalate, mono-(2-ethyl-5-hydroxyhexyl) phthalate, mono-(2-ethyl-5-oxohexyl) phthalate, mono-n-butyl phthalate, mono-benzyl phthalate, mono-(carboxyloctyl) phthalate, and mono-(carboxynonyl) phthalate-in human milk.