heart
- Future ocean warming may prove beneficial for the northern population of European seabass, but ocean acidification will not
Summary: Heart mitochondria of juvenile European sea bass are impaired by acute warming, but seem to benefit from conditioning to warmer temperatures; they are only marginally impacted by ocean acidification.
- microRNA-29b knocks down collagen type I production in cultured rainbow trout (Oncorhynchus mykiss) cardiac fibroblasts
Summary: Increased expression of microRNA-29b decreases collagen type I synthesis in rainbow trout (Oncorhynchus mykiss) cardiac fibroblasts, suggesting that this microRNA could play a role in temperature-induced changes in collagen content in the trout heart.
- Thermal acclimation and seasonal acclimatization: a comparative study of cardiac response to prolonged temperature change in shorthorn sculpin
Highlighted Article: The effects of seasonal acclimatization on cardiac responses to low temperatures are stronger than those of acclimation to similar temperatures in laboratory conditions, highlighting the importance of seasonal cues for cardiac remodelling in a eurythermal fish.
- Selenoprotein T as a new positive inotrope in the goldfish, Carassius auratus
Summary: SELENOT, a thioredoxin-like protein, is proposed as a cardiac modulator in the goldfish Carassius auratus, with a potential role in hypoxia tolerance.
- Structural and functional characterization of the contractile aorta and associated hemocytes of the mosquito Anopheles gambiae
Summary: Structural mechanics of hemolymph flow through the aorta and conical chamber of the African malaria mosquito, Anopheles gambiae.
- Relative position of the atrioventricular canal determines the electrical activation of developing reptile ventricles
Summary: The heart ventricles of squamate reptiles are without a specialized ventricular conduction system, and the manner of electrical activation can therefore be predicted on the basis of morphology.
- Frank–Starling mechanism and short-term adjustment of cardiac flow
Summary: The Frank–Starling mechanism has no working in the stability of the circulatory system. Rather, the mechanism accounts for decreasing the need for central control and for speeding up changes in cardiac output.
- Dynamic changes in cardiac mitochondrial metabolism during warm acclimation in rainbow trout
Summary: Mitochondrial oxygen consumption of cardiac permeabilized fibers decreases rapidly after acute warming and then remains stable during the subsequent warm acclimation process in rainbow trout.
- Right-to-left shunt has modest effects on CO2 delivery to the gut during digestion, but compromises oxygen delivery
Summary: Shunting in reptiles is ineffective for regulating gastric CO2 supply but effectively reduces blood O2 levels.
- High rates of glucose utilization in the gas gland of Atlantic cod (Gadus morhua) are supported by GLUT1 and HK1b
Summary: High rates of glucose metabolism in gas glands of Atlantic cod are supported by GLUT1 and HKIb, a hexokinase paralogue that should not bind to mitochondria.