Serratia marcescens is a bacterial species that produces an antibacterial pigment (Prodigiosin) showing a wide adaptive response to environmental stresses. The study aimed to investigate Prodigiosin production in S. marcescens wild-type strains, as well as its relation to photopr...
Autor(es): Jorge Luis Fuentes. José D. D. Cediel Becerra. Jhon A. Suescun Sepulveda.
DNA is exposed to the attack of several exogenous agents that modify its chemical structure, so cells must repair those changes in order to survive. Alkylating agents introduce methyl or ethyl groups in most of the cyclic or exocyclic nitrogen atoms of the ring and exocyclic oxyg...
Autor(es): Jorge Luis Fuentes. Jorge Serment-Guerrero. Viridiana Dominguez-Monroy. Jenny Davila-Becerril. Enrique Morales-Avila.
La fotoprotección es una estrategia preventiva y terapéutica frente al cáncer y el envejecimiento de la piel. En el presente trabajo se revisan los efectos biológicos adversos de la radiación ultravioleta, los conceptos básicos relevantes de la fotoprotección y los métodos para l...
Autor(es): Jorge Luis Fuentes.
This work evaluated the photoprotective and antigenotoxic effects against ultraviolet B (UVB) radiation of flavonoid compounds apigenin, naringenin and pinocembrin. The photoprotective efficacy of these compounds was estimated using in vitro photoprotection indices, and the antig...
Autor(es): Adriana Garcia. Diego Armando Villamizar. Elena Stashenko. Jorge Luis Fuentes. Luis A. Núñez. Raquel Elvira Ocazionez.
Triple-negative breast cancer is an aggressive subtype of breast cancer with low 5-year survival rates, high 3-year recurrence rates, and no known therapeutic targets. Recent studies have indicated that triple-negative breast cancers possess an altered metabolic state with higher...
Autor(es): Jorge Luis Fuentes. VISHAK RAMAN. UMA K ARYAL. VICTORIA HEDRICK. RODRIGO MOHALLEM FERREIRA. ELENA STASHENKO. MORRIS LEVY. MARIA M LEVY. IGNACIO G CAMARILLO.
Exposure to ultraviolet (UV) radiation blocks DNA replication and arrests cellular division in Escherichia coli. Restoration of chromosome replication involves nucleoid reorganization, which involves the participation of the recombination-catalyzing proteins RecA, RecO, RecR and ...
Autor(es): Carlos Felipe Estevez. Jorge Luis Fuentes. JORGE HUMBERTO SERMENT GUERRERO.
Six Lippia sp. were subjected to sequence analysis of the small ribosomal subunit (SRS) or 18S rDNA gene (ca. 1530 bp in length) for studying their genetic relationship. A total of nine nucleotide differences distinguished the species-specific SRS haplotypes of L. alba, L. americ...
Autor(es): Francisco Jose Martinez. Fernando Rondon. Jorge Luis Fuentes. Liliana Santamaría-Acevedo. Cesar Augusto Prada-Medina. Elena Stashenko. Morris Levy. María Mercedes Levy.
The prokaryotic community at the ?La Cira-Infantas? oil field, located in Colombia"s Middle Magdalena Valley Basin, was characterized using 16S rRNA gene sequence analysis. This characterization is a first-step in assessing the dynamics of microbial degradation and defining strat...
Autor(es): Jorge Hernandez. Francisco Jose Martinez. Jorge Luis Fuentes. GENIS ANDRES CASTILLO VILLAMIZAR. SILVIA JULIANA SALGAR CHAPARRO. BIBIANA ANDREA SILVA PLATA. ORIANA DANUTA SERNA DAZA. RICARDO MIER UMANA. MORRIS LEVY.