Address correspondence to: Dr. Alfredo Castro-Vázquez, Fisiología Normal, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo. Casilla de Correo 33, (5500) Mendoza, ARGENTINA. Fax: (+54-261) 449 4117; E-mail: [email protected] / [email protected] Received on November 29, 2000. Accepted on November 13, 2001. Pigmented intracellular corpuscles (“spherioles”) have been known to o...

A paradoxical task of the venom gland of snakes is the synthesis and storage of an instantly available suite of toxins to immobilize prey and the protection of the snake against its own venom components. Furthermore, autolysis of the venom constituents due to the action of venom metalloproteases is an additional problem, particularly among viperid venoms, which are typically rich in lytic enzym...

A case of pedunculated Brunner's gland hamartoma (BGH) of the duodenum causing upper gastrointestinal (GI) hemorrhage is reported. The patient was a 47-year-old man who visited our hospital for further evaluation of tarry stools and shortness of breath. Endoscopic examination of the upper digestive tract revealed a large peduncular polyp with bleeding, about 30 mm in diameter, arising from the ...

The occurrence of phthalate esters in freshwater and marine aquacultural species like rainbow trout Oncorhynchus mykiss and shi drum Umbrina cirrosa, respectively, were determined by immunohistochemical approach. The results showed a similar distribution in the gastrointestinal tract of both species. In particular, intense immunoreactivity was found at gastric gland level. In the intestinal tra...

Telocytes (TCs) are a newly discovered type of cell with numerous functions. They have been found in a large variety of organs: heart (endo-, myo-, epi- and pericardium, myocardial sleeves, heart valves); digestive tract and annex glands (oesophagus, stomach, duodenum, jejunum, liver, gallbladder, salivary gland, exocrine pancreas); respiratory system (trachea and lungs); urinary system (kidney...

Knowledge on the energy distribution during the reproductive cycle of the giant lion-paw scallop, Nodipecten subnodosus is limited, but necessary for aquaculture purposes. In a previous work, we found that natural food availability can sustain the full cost of gametogenesis in optimal environmental conditions. The present study analyses the lipid and sterol classes’ composition of several tissu...

In this study, we investigated the changes of 13 trace metal and metalloid concentrations (i.e. Ag, As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Se, V, Zn) and their subcellular fractionation in juvenile cuttlefish Sepia officinalis reared in controlled conditions between hatching and 2 months post-hatching. In parallel, metallothionein concentrations were determined. Our results highlighted contrasting...

guinea fowls belong to the pheasant’s category. liver is the largest gland in the body, pancreas for digestive secretions and also spleen is of a importance as it is the largest lymphatic gland in adult mammals and poultry. as there are some differences in species and the two sex in these organs, and also there are not any research done on pheasant’s category like guinea fowl, these organs were...

The musk fragrance Galaxolide® (HHCB) is widely used in personal care and household products. Its large use leads to a continuous release of the compound into aquatic environments. Although some studies on presence HHCB ecosystems biota have been conducted, limited data about its effects organism biomarkers are available. This study aimed at investigating both cellular biochemical clam Ruditape...

methanol extracts of callistemon viminalis (sol. ex gaertner) g.don ex loudon fruits, bark and leaves were tested for molluscicidal activity. snails were collected and kept in dechlorinated water under standard condition. ten adults b. alexandrina, of the same size, were introduced in plastic acquaria for each experiment. the powdered organs extracted with methanol and the dried extracts were k...