Sera from tropical splenomegaly syndrome (TSS) and non-TSS patients from the same village were examined for their ability to inhibit the in vitro growth of Plasmodium falciparum. Using synchronized malaria cultures, sera from both groups inhibited parasite development only if added before merozoite reinvasion of erythrocytes had occurred. There was no significant difference in the degree or apparent mechanism of inhibition caused by TSS and non-TSS sera. These results suggest that the aberrant immune response that results in TSS may not be associated with the elaboration of unique serum factors that differentially inhibit growth of the parasite in vitro.
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http://dx.doi.org/10.4269/ajtmh.1986.35.708 | DOI Listing |
Enzyme Microb Technol
January 2025
Institute of Biotechnology, Brandenburg University of Technology Cottbus-Senftenberg, Universitätsplatz 1, Senftenberg 01968, Germany. Electronic address:
There is an enormous potential for cell-free protein synthesis (CFPS) systems based on filamentous fungi in view of their simple, fast and mostly inexpensive cultivation with high biomass space-time yields and in view of their catalytic capacity. In 12 of the 22 different filamentous fungi examined, in vitro translation of at least one of the two reporter proteins GFP and firefly luciferase was detected. The lysates showing translation of a reporter protein usually were able to synthesize a functional cell-free expressed unspecific peroxygenase (UPO) from the basidiomycete Cyclocybe (Agrocybe) aegerita.
View Article and Find Full Text PDFBiol Reprod
January 2025
Department of Animal Sciences, University of Florida, Gainesville, FL 32611-0910, USA.
Optimal embryonic development depends upon cell-signaling molecules released by the maternal reproductive tract called embryokines. Identity of specific embryokines that enhance competence of the embryo for sustained survival is largely lacking. The current objective was to evaluate effects of three putative embryokines in cattle on embryonic development to the blastocyst stage.
View Article and Find Full Text PDFPLoS One
January 2025
Pharmaceutical Medicinal Chemistry & Drug Design Department, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, Egypt.
This study presents T-1-NBAB, a new compound derived from the natural xanthine alkaloid theobromine, aimed at inhibiting VEGFR-2, a crucial protein in angiogenesis. T-1-NBAB's potential to interacts with and inhibit the VEGFR-2 was indicated using in silico techniques like molecular docking, MD simulations, MM-GBSA, PLIP, essential dynamics, and bi-dimensional projection experiments. DFT experiments was utilized also to study the structural and electrostatic properties of T-1-NBAB.
View Article and Find Full Text PDFIn the leucine (Leu) biosynthesis pathway, homeostasis is achieved through a feedback regulatory mechanism facilitated by the binding of the end-product Leu at the C-terminal regulatory domain of the first committed enzyme, isopropylmalate synthase (IPMS). In vitro studies have shown that removing the regulatory domain abolishes the feedback regulation on plant IPMS while retaining its catalytic activity. However, the physiological consequences and underlying molecular regulation on Leu flux upon removing the IPMS C-terminal domain remain to be explored in plants.
View Article and Find Full Text PDFInt J Surg
January 2025
Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China.
Background: Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal diseases. Although several chemotherapy regimens have been developed over the past decades, few targeted therapies have shown a significant improvement in overall survival, partly due to the identification of PDAC as a single disease.
Methods: Combining metabolomic analysis and immunohistochemistry staining with Oil Red O staining, analysis for the oxygen consumption rate and extracellular acidification rate, we stratified pancreatic cancer cells into two subtypes.
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