The marine and estuarine bony fishes (Teleostei) of the Golfão Maranhense on the eastern Amazon coast, northern Brazil.

The Golfão Maranhense is an extensive estuarine complex that provides nursery grounds and other habitats for several fish species, as well as a wealth of resources for the coastal and estuarine artisanal fisheries of the Maranhão state, in northern Brazil. The present study provides a comprehensive inventory of marine and estuarine teleost fishes of the Golfão Maranhense based on field samplings, analyses of voucher specimens from local collections and literature data. This inventory presents a total of 163 species of teleosts belonging to 107 genera, 57 families and 27 orders.

Mechanisms involved in cardiovascular and hydroelectrolytic changes in dehydrated high-fat diet-fed rats.

Obesity is increasingly prevalent worldwide, and climate change is exacerbating water shortages, leading to dehydration. Both obesity and dehydration cause increased arterial pressure (AP), fluid electrolytic imbalance, and neuroinflammation. Thus, the present study aimed to verify the changes in the cardiovascular system, hydroelectrolytic balance and microglia and neuronal activation in rats fed with a high-fat diet (HFD) in response to 24 h of water deprivation (WD) and the possible mechanisms involved.

The dynamics of plasmon-induced hot carrier creation in colloidal gold.

The generation and dynamics of plasmon-induced hot carriers in gold nanoparticles offer crucial insights into nonequilibrium states for energy applications, yet the underlying mechanisms remain experimentally elusive. Here, we leverage ultrafast X-ray absorption spectroscopy (XAS) to directly capture hot carrier dynamics with sub-50 fs temporal resolution, providing clear evidence of plasmon decay mechanisms. We observe the sequential processes of Landau damping (~25 fs) and hot carrier thermalization (~1.

Prolonged Chronic Cerebral Hypoperfusion Does not Exacerbate Tau Pathology in a Tauopathy Mouse Model.

Background: Several preclinical studies have reported elevated levels of tau following the induction of chronic cerebral hypoperfusion (CCH) in Alzheimer's disease mouse models. The objective of this study was to first induce CCH in a mouse model of tauopathy over an extended period of up to 6 months and to subsequently investigate the effects of CCH on tau accumulation and alterations in the transcriptome.

Methods: Three-month-old P301S tauopathy mice were randomly allocated to either a Sham or CCH group.

Isolation and characterization of blood-stage persisters by improved selection protocols using dihydroartemisinin alone.

Artemisinin-based combination therapies (ACTs) are vital for malaria treatment, but these are threatened by blood-stage persisters-dormant forms of parasites that can survive drug exposure and cause recrudescent infections. Here, we present improved protocols for efficient preparation of pure persister populations without the need for magnetically activated columns, sorbitol exposure, or prolonged manipulations. Our protocols transformed actively replicating parasites into persister populations by exposing mixed blood-stage parasites to three or four consecutive daily 6 h pulses of 700 nM or 200 nM dihydroartemisinin (DHA).