scholarly journals Evolutionary links between intra‐ and extracellular acid–base regulation in fish and other aquatic animals

2020 ◽  
Vol 333 (6) ◽  
pp. 449-465
Author(s):  
Martin Tresguerres ◽  
Alexander M. Clifford ◽  
Till S. Harter ◽  
Jinae N. Roa ◽  
Angus B. Thies ◽  
...  
Keyword(s):  
Acid Base ◽  
Aquatic Animals

Compromises between ionic regulation and acid–base regulation in aquatic animals

1989 ◽  
Vol 67 (12) ◽  
pp. 3078-3084 ◽  
Author(s):  
James N. Cameron ◽  
George K. Iwama
Keyword(s):  
Experimental Data ◽  
Theoretical Studies ◽  
Ionic Regulation ◽  
Acid Base ◽  
Aquatic Animals ◽  
Osmotic Homeostasis ◽  
System Changes ◽  
Solution Parameters ◽  
Partial Compensation

To compensate for various sorts of acid–base disturbances, animals must sometimes make large changes in the concentration of [Formula: see text] in both intra- and extra-cellular fluids. As [Formula: see text] concentration is dependent upon several other solution parameters, including the so-called strong ions, there must often be compromises between compensation of acid–base disturbances and the requirements for ionic and osmotic homeostasis. Data showing that partial compensation of hypercapnia may represent such a compromise have been gathered from both fish and crabs. Traditional approches to acid–base regulation emphasize the [Formula: see text] system changes, but more recently an approach based on electrolytes has been promoted. The similarities between these two approaches are illustrated with experimental data and theoretical studies. Practical limitations prevent the routine use of the electrolyte (strong ion) approach.

scholarly journals Sensing acid/base conditions via soluble adenylyl cyclase in aquatic animals

2013 ◽  
Vol 27 (S1) ◽  
Author(s):  
Martin Tresguerres ◽  
Megan E. Barron ◽  
Katie L. Barott ◽  
Jason Ho ◽  
Jinae N. Roa
Keyword(s):  
Adenylyl Cyclase ◽  
Acid Base ◽  
Aquatic Animals ◽  
Soluble Adenylyl Cyclase

scholarly journals Corrigendum for “Evolutionary links between intra‐ and extracellular acid–base regulation in fish and other aquatic animals” (vol. 333, Issue 6)

2020 ◽  
Vol 333 (8) ◽  
pp. 607-607
Author(s):  
Martin Tresguerres ◽  
Alexander M. Clifford ◽  
Till S. Harter ◽  
Jinae N. Roa ◽  
Angus B. Thies ◽  
...  
Keyword(s):  
Acid Base ◽  
Aquatic Animals

Higher Dietary Acidity is Associated with Lower Bone Mineral Density in Postmenopausal Iranian Women, Independent of Dietary Calcium Intake

2014 ◽  
Vol 84 (3-4) ◽  
pp. 0206-0217 ◽  
Author(s):  
Seyedeh-Elaheh Shariati-Bafghi ◽  
Elaheh Nosrat-Mirshekarlou ◽  
Mohsen Karamati ◽  
Bahram Rashidkhani
Keyword(s):  
Calcium Intake ◽  
Dietary Calcium ◽  
Dietary Calcium Intake ◽  
Dietary Intakes ◽  
Iranian Women ◽  
Acid Base Balance ◽  
Mineral Density ◽  
Acid Base ◽  
Base Balance ◽  
Dietary Acid

Findings of studies on the link between dietary acid-base balance and bone mass are relatively mixed. We examined the association between dietary acid-base balance and bone mineral density (BMD) in a sample of Iranian women, hypothesizing that a higher dietary acidity would be inversely associated with BMD, even when dietary calcium intake is adequate. In this cross-sectional study, lumbar spine and femoral neck BMDs of 151 postmenopausal women aged 50 - 85 years were measured using dual-energy x-ray absorptiometry. Dietary intakes were assessed using a validated food frequency questionnaire. Renal net acid excretion (RNAE), an estimate of acid-base balance, was then calculated indirectly from the diet using the formulae of Remer (based on dietary intakes of protein, phosphorus, potassium, and magnesium; RNAERemer) and Frassetto (based on dietary intakes of protein and potassium; RNAEFrassetto), and was energy adjusted by the residual method. After adjusting for potential confounders, multivariable adjusted means of the lumbar spine BMD of women in the highest tertiles of RNAERemer and RNAEFrassetto were significantly lower than those in the lowest tertiles (for RNAERemer: mean difference -0.084 g/cm2; P=0.007 and for RNAEFrassetto: mean difference - 0.088 g/cm2; P=0.004). Similar results were observed in a subgroup analysis of subjects with dietary calcium intake of >800 mg/day. In conclusion, a higher RNAE (i. e. more dietary acidity), which is associated with greater intake of acid-generating foods and lower intake of alkali-generating foods, may be involved in deteriorating the bone health of postmenopausal Iranian women, even in the context of adequate dietary calcium intake.

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