Acid-base status of a pulmonate land snail (Helix aspersa) and a prosobranch amphibious snail (Pomacea bridgesi) during dormancy

1994 ◽  
Vol 268 (4) ◽  
pp. 293-298 ◽  
Author(s):  
David A. Scholnick ◽  
Gregory K. Snyder ◽  
Angel R. Spell
Keyword(s):  
Land Snail ◽  
Helix Aspersa ◽  
Acid Base ◽  
Acid Base Status ◽  
Snail Helix Aspersa

The nociceptin/orphanin FQ-like opioid peptide in nervous periesophageal ganglia of land snail Helix aspersa

2013 ◽  
Vol 1505 ◽  
pp. 22-46 ◽  
Author(s):  
Martha León-Olea ◽  
Carolina Miller-Pérez ◽  
Eduardo Sánchez-Islas ◽  
José Mendoza-Sotelo ◽  
René Garduño-Gutiérrez ◽  
...  
Keyword(s):  
Land Snail ◽  
Opioid Peptide ◽  
Helix Aspersa ◽  
Orphanin Fq ◽  
Snail Helix Aspersa

Effects of anoxia on the extra- and intracellular acid-base status in the land snail helix lucorum (L.): lack of evidence for a relationship between pyruvate kinase down-regulation and acid-base status

1999 ◽  
Vol 202 (12) ◽  
pp. 1667-1675
Author(s):  
B. Michaelidis ◽  
A. Pallidou ◽  
P. Vakouftsi
Keyword(s):  
Pyruvate Kinase ◽  
Active Form ◽  
Land Snail ◽  
Land Snails ◽  
Kinetic Properties ◽  
Acid Base ◽  
Down Regulation ◽  
Helix Lucorum ◽  
End Products ◽  
Acid Base Status

The aims of the present study were to describe a possible correlation between the regulation of the key glycolytic enzyme pyruvate kinase and the acid-base status in the haemolymph and in several other tissues of land snails during anoxia. To illustrate whether such a relationship exists, we determined (i) the acid-base variables in the haemolymph and tissues of the land snail Helix lucorum, (ii) the kinetic properties of pyruvate kinase from several tissues and (iii) the levels of the anaerobic end-products d-lactate and succinate in the haemolymph and tissues of aerobic and anoxic Helix lucorum. The results showed that the pH of haemolymph (pHe) decreased significantly over the first 20 h of anoxia and then recovered slowly towards control values. A similar pattern was observed for intracellular pH (pHi), which decreased significantly over the first 16 h of anoxia and slowly returned towards control levels. The reduction and recovery of pHi and pHe seem to reflect the rate of anaerobic metabolism. The main anaerobic end-products, d-lactate and succinate, accumulated rapidly during the initial stages of anoxia and more slowly as anoxia progressed. The decrease in the rate of accumulation of anaerobic end-products during prolonged anoxia was due to the conversion of tissue pyruvate kinase to a less active form. The results demonstrate a correlation between pyruvate kinase down-regulation and the recovery of acid-base status in the haemolymph and the tissues of land snails during anoxia.

Pro-oxidant effects of extremely low frequency electromagnetic fields in the land snail Helix aspersa

2005 ◽  
Vol 39 (12) ◽  
pp. 1620-1628 ◽  
Author(s):  
F REGOLI ◽  
S GORBI ◽  
N MACHELLA ◽  
S TEDESCO ◽  
M BENEDETTI ◽  
...  
Keyword(s):  
Electromagnetic Fields ◽  
Low Frequency ◽  
Land Snail ◽  
Helix Aspersa ◽  
Extremely Low Frequency ◽  
Snail Helix Aspersa

Larval development of Angiostrongylus vasorum in the land snail Helix aspersa

2015 ◽  
Vol 114 (10) ◽  
pp. 3649-3655 ◽  
Author(s):  
Angela Di Cesare ◽  
Paolo Emidio Crisi ◽  
Roberto Bartolini ◽  
Raffaella Iorio ◽  
Tonino Talone ◽  
...  
Keyword(s):  
Larval Development ◽  
Land Snail ◽  
Helix Aspersa ◽  
Angiostrongylus Vasorum ◽  
Snail Helix Aspersa
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