Details

Autor(en) / Beteiligte

• Monroe, Glen R
• van Eerde, Albertien M
• Tessadori, Federico
• Duran, Karen J
• Savelberg, Sanne M C
• van Alfen, Johanna C
• Terhal, Paulien A
• van der Crabben, Saskia N
• Lichtenbelt, Klaske D
• Fuchs, Sabine A
• Gerrits, Johan
• van Roosmalen, Markus J
• van Gassen, Koen L
• van Aalderen, Mirjam
• Koot, Bart G
• Oostendorp, Marlies
• Duran, Marinus
• Visser, Gepke
• de Koning, Tom J
• Calì, Francesco
• Bosco, Paolo
• Geleijns, Karin
• de Sain-van der Velden, Monique G M
• Knoers, Nine V
• Bakkers, Jeroen
• Verhoeven-Duif, Nanda M
• van Haaften, Gijs
• Jans, Judith J

Titel

Identification of human D lactate dehydrogenase deficiency

Ist Teil von

• Nature communications, 2019-04, Vol.10 (1), p.1477-1477, Article 1477

Ort / Verlag

England: Nature Publishing Group

Erscheinungsjahr

2019

Quelle

MEDLINE

Beschreibungen/Notizen

• Phenotypic and biochemical categorization of humans with detrimental variants can provide valuable information on gene function. We illustrate this with the identification of two different homozygous variants resulting in enzymatic loss-of-function in LDHD, encoding lactate dehydrogenase D, in two unrelated patients with elevated D-lactate urinary excretion and plasma concentrations. We establish the role of LDHD by demonstrating that LDHD loss-of-function in zebrafish results in increased concentrations of D-lactate. D-lactate levels are rescued by wildtype LDHD but not by patients' variant LDHD, confirming these variants' loss-of-function effect. This work provides the first in vivo evidence that LDHD is responsible for human D-lactate metabolism. This broadens the differential diagnosis of D-lactic acidosis, an increasingly recognized complication of short bowel syndrome with unpredictable onset and severity. With the expanding incidence of intestinal resection for disease or obesity, the elucidation of this metabolic pathway may have relevance for those patients with D-lactic acidosis.