Publications by authors named "R Martinez-Garcia"

Driven by a growing global interest in natural products, macroalgae have emerged as a prime source for nutraceuticals and pharmaceutical applications. In the current research, the effect of oven-drying (OD) and freeze-drying (FD), as well as the pressurized liquid extraction (PLE) conditions, were investigated in relation to the polyphenols, flavonoids, carotenoids, chlorophylls, and tocochromanols levels in extracts. The ethanol-water extracts (1:1) obtained with PLE-150 °C from macroalgae oven-dried (OD)-80 °C displayed the highest total polyphenol content (TPC) and total flavonoid contents (TFCs), reaching 29.

View Article and Find Full Text PDF

The neocortex controls its own sensory input in part through top-down inhibitory mechanisms. Descending corticothalamic projections drive GABAergic neurons of the thalamic reticular nucleus (TRN), which govern thalamocortical cell activity via inhibition. Neurons in sensory TRN are organized into primary and higher order (HO) subpopulations, with separate intrathalamic connections and distinct genetic and functional properties.

View Article and Find Full Text PDF
Article Synopsis
  • - The tropical gar, found from southeastern Mexico to southern Costa Rica, is significant for its unique evolutionary position as a bridge between tetrapods and teleosts, raising questions about its regenerative abilities compared to other fishes.
  • - The study observed juvenile tropical gar over two months, using various staining techniques to analyze the regeneration of their caudal fins after amputation, focusing on skeletal and tissue recovery.
  • - Results indicated that juvenile tropical gar have a strong ability to regenerate their caudal fins, suggesting potential implications for research on tissue regeneration in related fish species.
View Article and Find Full Text PDF

Probiotics in aquaculture hold promise for enhancing fish health and growth. Due to their increased specificity and affinity for their host, indigenous probiotics may offer isolated and potentially amplified benefits. This study investigated the effects of PH3-05, previously isolated from adults of tropical gar (), on the growth, survival, digestive enzyme activity, intestinal morphology, expression of barrier and immune genes, and intestinal microbiota composition in the larvae of tropical gar.

View Article and Find Full Text PDF

Crohn's disease (CD) is a chronic recurrent inflammatory bowel disease (IBD) with frequent ileocolic location, although it can affect the entire gastrointestinal tract. It is characterized by the development of skipped lesions and transmural inflammation and its incidence is increasing. The etiology and pathogenesis are related to genetic susceptibility, intestinal microbiota, dysbiosis, immunological abnormalities and environmental factors (tobacco use, NSAIDs, oral contraceptives and diet).

View Article and Find Full Text PDF