Intestinal flow and digestive parameters of Lutzomyia longipalpis larvae.

Lutzomyia longipalpis Lutz & Neiva, 1912 (Diptera, Psychodidae), is the primary vector of Leishmania infantum Nicole, 1908, the etiological agent of American visceral leishmaniasis. During their development, sandfly larvae pass through four instars, consuming soil particles enriched with microorganisms and decomposing organic material. In numerous insect species, the intestinal epithelium not only secretes digestive enzymes and absorbs digested nutrients but also carries out additional functions, such as regulating luminal pH and facilitating the absorption or secretion of ions and water.

Environmental impact of disposable face masks: degradation, wear, and cement mortar incorporation.

Polypropylene (PP) disposable face masks (DFMs) are essential for limiting airborne infectious diseases. This study examines the behavior of DFMs under three scenarios: (i) exposure to the natural environment, (ii) simulated high-energy aquatic environments through an abrasion test, and (iii) incorporation into cement-based mortars. In the natural weathering experiment, after 117 days, the DFMs exhibited photodegradation, resulting in chemical alterations in carbonyl and hydroxyl groups.

Subacute Symptoms of Depression and Anxiety in Stress-Exposed Mice: Role of Schinus terebinthifolia Raddi Leaf Lectin (SteLL).

Ethnopharmacological Relevance: Anxiety and depression are leading causes of disability worldwide, often exacerbated by chronic stress. Schinus terebinthifolia Raddi. has been used in traditional medicine for several purposes.