Morphology, glicohistochemistry and immunolocalization of Aquaporin 5 in the mandibular gland of the giant anteater (Myrmecophaga tridactyla).

Background: The giant anteater (Myrmecophaga tridactyla) is a toothless mammal that feeds mainly on termites and ants. Therefore, like other toothless mammals, this species has morphological and physiological adaptations of the salivary glands related to eating habits. Saliva is essential for the health of the oral cavity, chewing and lubrication of the mouth and it is constituted by an aqueous fluid containing electrolytes, enzymes, and glycoproteins which play an important role in modulating the oral microbiota.

Morphology of the syrinx of three species of birds from Brazilian cerrado (Psittacara leucophthalmus, Rhynchotus rufescens and Cariama cristata): Gross anatomy and light microscopy study.

The aim of this study was to describe the morphology of the trachea and syrinx at macroscopic and light microscopy levels of three species of birds from different orders that inhabit the Brazilian cerrado. For that, five adult specimens (three males and two females of each species) of white-eyed parakeet (Psittacara leucophthalmus), red-winged tinamou (Rhynchotus rufescens) and red-legged seriema (Cariama cristata) were used. The trachea and syrinx of the birds were collected and destined for anatomical and histological studies.

New insight into the toxic effects of lithium in the ragworm Perinereis cultrifera as revealed by lipidomic biomarkers, redox status, and histopathological features.

Lithium (Li) is a toxic monovalent alkaline metal used in household items common to industrial applications. The present work was aimed at investigating the potential toxic effects of LiCl on the redox status, fatty acid composition, and histological aspects of the marine ragworm Perinereis cultrifera. Sea worms were exposed to LiCl graded doses (20, 40, and 80 mg/L) for 48 h.

Effects of kisspeptin-10 on in vitro proliferation and kisspeptin receptor expression in primary epithelial cell cultures isolated from bovine placental cotyledons of fetuses at the first trimester of pregnancy.

Kisspeptin (Kp) and Kiss-1 receptor (Kiss-1R) expressions have been reported to be in the placenta, and a possible involvement of the Kiss-1R/Kps system in regulating trophoblast invasion and proliferation has been hypothesized. The aim of the present study was to investigate whether Kiss-1R activation by kisspeptin-10 (Kp-10) could modulate in vitro proliferation and progesterone (P4) secretion of bovine primary placental cell lines isolated from cotyledons of fetuses in the first trimester of pregnancy. The involvement of Kiss-1R in the cell responses observed was also analyzed.