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Related Concept Videos

Acid-Base Balance01:25

Acid-Base Balance

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The human body maintains a narrow pH range regulated through acid-base balance. This balance is crucial as changes in the hydrogen ion concentration can disrupt cell membrane stability, alter protein structures, and change enzyme activities. The normal pH of arterial blood is 7.4, venous blood and interstitial fluid is 7.35, and intracellular fluid averages 7.0.
When the pH of arterial blood rises above 7.45, it results in a condition called alkalosis. Conversely, a drop below 7.35 leads to...
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Disorders of Acid-Base Balance01:29

Disorders of Acid-Base Balance

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The human body maintains a precise pH range of arterial blood between 7.35 and 7.45. Deviations result in either acidosis (pH < 7.35) or alkalosis (pH > 7.45). These conditions are further classified as respiratory or metabolic disorders based on their underlying cause.
Respiratory Acidosis and Alkalosis
Respiratory acidosis occurs due to an increase in the partial pressure of carbon dioxide PCO2 in the blood. It often arises from shallow breathing or impaired gas exchange caused by...
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Respiratory Regulation of Acid-Base Balance01:18

Respiratory Regulation of Acid-Base Balance

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Respiratory compensation is a vital physiological process that stabilizes blood plasma pH by regulating the partial pressure of carbon dioxide (PCO2), a key determinant of pH levels. Most carbon dioxide in the blood dissolves and converts into carbonic acid (H2CO3). It dissociates into hydrogen ions (H+) and bicarbonate ions (HCO3⁻). There is also an inverse relationship between PCO2​​ and pH.
When carbon dioxide levels increase in the blood, more H+ and HCO3⁻ are...
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Renal Regulation of Acid-Base Balance01:29

Renal Regulation of Acid-Base Balance

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Metabolic reactions in the body produce nonvolatile acids, such as sulfuric acid, which generate an acid load of approximately 1 mEq of H+ per kilogram of body weight daily. Excreting H+ in the urine is essential to balance this acid load.
In the kidneys, cells within the proximal convoluted tubules (PCT) and the collecting ducts secrete hydrogen ions (H+) into the tubular fluid. Specifically, in the PCT, Na+/H+ antiporters secrete H+ while reabsorbing Na+.
However, the intercalated cells in...
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Balancing Redox Equations02:58

Balancing Redox Equations

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Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...
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Lewis Acids and Bases02:33

Lewis Acids and Bases

48.4K
In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to donate a pair of electrons and form a coordinate covalent bond.
A coordinate covalent bond (or dative bond) occurs when one of the atoms in the bond provides both bonding electrons. For example, a coordinate covalent bond occurs when a water molecule combines with a hydrogen ion to form a hydronium ion. A coordinate covalent bond also results when...
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Related Experiment Video

Updated: Feb 5, 2026

Drug-induced Sensitization of Adenylyl Cyclase: Assay Streamlining and Miniaturization for Small Molecule and siRNA Screening Applications
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Drug-induced Sensitization of Adenylyl Cyclase: Assay Streamlining and Miniaturization for Small Molecule and siRNA Screening Applications

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Adenylyl cyclase 6 in acid-base balance - adding complexity.

Jakob Voelkl1,2, Florian Lang3

  • 1Department of Internal Medicine and Cardiology, Charité - Universitätsmedizin Berlin, Augustenburgerplatz 1, Berlin 13353, Germany jakob.voelkl@charite.de.

Clinical Science (London, England : 1979)
|September 18, 2018
PubMed
Summary
This summary is machine-generated.

Adenylyl cyclase 6 (AC6) plays a complex role in maintaining acid-base balance. AC6 deficiency leads to alkalosis during bicarbonate loading and impacts energy expenditure in mice.

Keywords:
acid-base balanceadenylyl cyclasesrenal physiology

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Area of Science:

  • Nephrology
  • Physiology
  • Biochemistry

Background:

  • Systemic acid-base balance is critical and tightly regulated.
  • The kidney is central to acid-base homeostasis, excreting bicarbonate or protons.
  • Chronic kidney disease often results in acidosis, highlighting regulatory pathway importance.

Purpose of the Study:

  • To investigate the role of adenylyl cyclase 6 (AC6) in acid-base homeostasis.
  • To elucidate the specific mechanisms by which AC6 influences acid-base regulation.

Main Methods:

  • Study involved AC6-deficient mice.
  • Analysis of acid-base balance under conditions of bicarbonate load.
  • Assessment of systemic effects and energy expenditure in AC6-deficient models.

Main Results:

  • AC6-deficient mice exhibited pronounced alkalosis during bicarbonate loading.
  • AC6 deficiency was associated with a more complex phenotype, including increased energy expenditure.
  • AC6 influences acid-base balance, particularly during bicarbonate challenges.

Conclusions:

  • Adenylyl cyclase 6 plays a significant, complex role in systemic acid-base homeostasis.
  • Further research is needed to fully understand the intricate signaling pathways in renal acid-base control.
  • AC6's role extends beyond acid-base balance, affecting systemic metabolism and energy expenditure.