Scurvy

Pathophysiology description (concise overview)

2026-01-08
Falcon MONDO:0009412 Model: Edison Scientific Literature 23 citations

Pathophysiology description (concise overview)

Scurvy results from inadequate L-ascorbate (vitamin C), an essential reducing cofactor for multiple non-heme Fe(II)/2-oxoglutarate (2-OG)–dependent dioxygenases and select monooxygenases. The cardinal molecular lesion is failure of collagen post-translational hydroxylation (proline, lysine), which destabilizes the triple helix, impairs cross-linking, and weakens extracellular matrix (ECM). Clinically, this manifests as capillary fragility with bleeding (petechiae, ecchymoses, gingival hemorrhage), poor wound healing, musculoskeletal pain, and characteristic bone/growth plate abnormalities. Ascorbate also supports HIF hydroxylases (EGLN/PHDs, FIH), TET DNA demethylases, dopamine β-hydroxylase (DBH), peptidylglycine α-amidating monooxygenase (PAM), and carnitine biosynthesis, so deficiency can secondarily perturb hypoxia signaling, epigenetic regulation, catecholamine and peptide amidation pathways, and cellular energy metabolism. Tissue vitamin C homeostasis depends on SLC23A1/SLC23A2 (SVCT1/2) and complementary uptake of dehydroascorbic acid (DHA) via GLUT transporters; dietary lack depletes the small total body pool within weeks, producing the clinical picture of scurvy (gastrointestinal and systemic bleeding, mucocutaneous and skeletal features). (gandhi2023scurvyrediscoveringa pages 1-2, gandhi2023scurvyrediscoveringa pages 2-4, ramanujan2024vitamincis pages 7-7)

1. Core Pathophysiology

2. Key Molecular Players

Table (click to expand)
Category Entity Name Ontology ID / Abbrev Role in Scurvy Pathophysiology (1-2 sentences) Evidence
Enzyme Prolyl 4-hydroxylase alpha subunits (P4HA1/2/3) HGNC:P4HA1/P4HA2/P4HA3 Hydroxylate proline residues in procollagen to enable triple-helix formation; impaired activity from ascorbate deficiency destabilizes collagen and weakens ECM, causing bleeding and poor wound healing. (ramanujan2024vitamincis pages 7-7, gandhi2023scurvyrediscoveringa pages 2-4)
Enzyme Lysyl hydroxylases (PLOD1/2/3) HGNC:PLOD1/PLOD2/PLOD3 Hydroxylate lysine residues required for collagen cross-linking; deficiency reduces crosslinks leading to fragile connective tissue and defective bone matrix. (ramanujan2024vitamincis pages 7-7, gandhi2023scurvyrediscoveringa pages 2-4)
Enzyme (oxygen sensor) HIF prolyl hydroxylases (EGLN1/2/3, a.k.a. PHD1/2/3) HGNC:EGLN1/EGLN2/EGLN3 2‑OG/Fe(II)-dependent prolyl hydroxylases that regulate HIF stability; ascorbate maintains enzyme activity so deficiency can dysregulate hypoxia signaling. (ramanujan2024vitamincis pages 7-7)
Enzyme (regulator) Factor inhibiting HIF (HIF1AN / FIH) HGNC:HIF1AN Asparaginyl hydroxylase that modulates HIF transcriptional activity; requires reducing cofactor activity supported by ascorbate, so deficiency can alter HIF transcriptional outputs. (ramanujan2024vitamincis pages 7-7)
Enzyme (epigenetic) TET1 / TET2 / TET3 HGNC:TET1/TET2/TET3 Fe(II)/2‑OG dioxygenases that oxidize 5mC to 5hmC promoting active DNA demethylation; ascorbate is a cofactor and deficiency may impair epigenetic regulation. (alberts2025vitaminca pages 1-2, gandhi2023scurvyrediscoveringa pages 2-4)
Enzyme (catecholamine) Dopamine beta-hydroxylase (DBH) HGNC:DBH Converts dopamine → norepinephrine within secretory vesicles using ascorbate as electron donor; deficiency can reduce NE synthesis and contribute to neuropsychiatric/autonomic features. (gandhi2023scurvyrediscoveringa pages 2-4, ramanujan2024vitamincis pages 7-7)
Enzyme (peptide maturation) Peptidylglycine alpha-amidating monooxygenase (PAM) HGNC:PAM Amidating monooxygenase requiring ascorbate for peptide hormone/neuropeptide maturation; deficiency may impair peptide signaling. (gandhi2023scurvyrediscoveringa pages 2-4, ramanujan2024vitamincis pages 7-7)
Enzymes (carnitine biosynthesis) TMLHE, BBOX1 HGNC:TMLHE, BBOX1 Ascorbate-dependent dioxygenase steps in carnitine biosynthesis; deficiency can reduce carnitine levels and contribute to muscle fatigue. (gandhi2023scurvyrediscoveringa pages 2-4, lu2023scurvyina pages 2-3)
Transporter Vitamin C transporters (SLC23A1 / SLC23A2; SVCT1/2) HGNC:SLC23A1, SLC23A2 Sodium-dependent vitamin C transporters mediate ascorbate uptake and tissue accumulation; altered expression or saturation affects tissue ascorbate and scurvy susceptibility. (ramanujan2024vitamincis pages 7-7)
Transporter (alternative) DHA transport via GLUTs (SLC2A family) HGNC:SLC2A* (GLUTs) Oxidized form dehydroascorbic acid (DHA) can be transported via GLUT family members and reduced intracellularly to ascorbate, providing an alternative uptake route. (gandhi2023scurvyrediscoveringa pages 2-4, ramanujan2024vitamincis pages 7-7)
Structural protein / GO Collagen (generic) GO:0005581 (extracellular matrix) Principal ECM protein requiring prolyl/lysyl hydroxylation for structural stability; defective collagen underlies capillary fragility, mucosal bleeding, poor wound healing, and defective bone matrix. (gandhi2023scurvyrediscoveringa pages 2-4, lu2023scurvyina pages 2-3)
Cell type (CL) Fibroblast CL:Fibroblast Major collagen-producing stromal cell; impaired collagen processing in fibroblasts leads to weakened dermal and connective tissues seen in scurvy. (gandhi2023scurvyrediscoveringa pages 2-4, ramanujan2024vitamincis pages 7-7)
Cell type (CL) Osteoblast CL:Osteoblast Bone-forming cells that produce osteoid rich in type I collagen; defective collagen synthesis impairs osteoid formation, causing osteoporosis, cortical thinning, and growth-plate pathology. (gandhi2023scurvyrediscoveringa pages 4-5, nefihancoro2024analysisofthe pages 4-7)
Cell type (CL) Chondrocyte CL:Chondrocyte Cartilage/growth-plate cells that depend on collagen-rich matrix; ascorbate deficiency impairs endochondral matrix formation producing metaphyseal and epiphyseal abnormalities. (gandhi2023scurvyrediscoveringa pages 4-5, lu2023scurvyina pages 2-3)
Cell type (CL) Endothelial cell CL:Endothelial cell Vascular integrity relies on collagen-containing basement membrane; impaired collagen leads to capillary fragility and hemorrhage (petechiae, ecchymoses). (gandhi2023scurvyrediscoveringa pages 2-4, gandhi2023scurvyrediscoveringa pages 1-2)
Anatomy (UBERON) Gingiva UBERON:Gingiva Highly vascular mucosa with collagen-rich stroma; scurvy causes gingival swelling, bleeding, and periodontal disease due to ECM failure. (gandhi2023scurvyrediscoveringa pages 2-4, lu2023scurvyina pages 2-3)
Anatomy (UBERON) Skin UBERON:Skin Dermal ECM failure causes perifollicular hemorrhages, petechiae, and poor wound healing characteristic of scurvy. (gandhi2023scurvyrediscoveringa pages 4-5, gandhi2023scurvyrediscoveringa pages 2-4)
Anatomy (UBERON) Bone UBERON:Bone Impaired collagen in osteoid leads to brittle bones, osteoporosis, cortical thinning, and fracture risk in scurvy. (nefihancoro2024analysisofthe pages 4-7, gandhi2023scurvyrediscoveringa pages 4-5)
Anatomy (UBERON) Epiphyseal (growth) plate UBERON:Epiphyseal_plate Collagen-dependent cartilage zone for endochondral ossification; deficiency produces growth-plate abnormalities, metaphyseal bands, and limp/pseudoparalysis in children. (gandhi2023scurvyrediscoveringa pages 4-5, lu2023scurvyina pages 2-3)
Chemical (CHEBI) L-ascorbate (vitamin C) CHEBI:Asc Essential reducing cofactor for multiple Fe(II)/2‑OG dioxygenases and antioxidant; insufficient levels cause scurvy. (gandhi2023scurvyrediscoveringa pages 1-2, ramanujan2024vitamincis pages 7-7)
Chemical (CHEBI) Dehydroascorbic acid (DHA) CHEBI:DHA Oxidized form of ascorbate transported via GLUTs and reduced intracellularly to regenerate ascorbate; important alternative uptake pathway. (gandhi2023scurvyrediscoveringa pages 2-4, ramanujan2024vitamincis pages 7-7)
Chemical (CHEBI) Dopamine CHEBI:Dopamine Catecholamine precursor converted by DBH to norepinephrine using ascorbate; impaired DBH activity can alter neurotransmitter balance. (gandhi2023scurvyrediscoveringa pages 2-4, ramanujan2024vitamincis pages 7-7)
Chemical (CHEBI) Norepinephrine CHEBI:Norepinephrine Product of DBH; reduced synthesis in severe ascorbate deficiency may contribute to autonomic and neuropsychiatric symptoms. (gandhi2023scurvyrediscoveringa pages 2-4, ramanujan2024vitamincis pages 7-7)
Chemical (CHEBI) Carnitine CHEBI:Carnitine Requires ascorbate-dependent enzymatic steps for biosynthesis; deficiency can impair fatty acid transport into mitochondria and produce fatigue/weakness. (gandhi2023scurvyrediscoveringa pages 2-4, lu2023scurvyina pages 2-3)

Table: A concise reference table mapping enzymes, cells, tissues, and chemicals relevant to scurvy to ontology identifiers, their roles in pathophysiology, and the supporting evidence (context IDs). This facilitates ontology-driven annotation and rapid linking of mechanisms to sources.

3. Biological Processes (GO) disrupted

4. Cellular Components affected

5. Disease Progression

  • Trigger and depletion: Humans lack GULO and must ingest vitamin C; limited body pool (approx. 1–3 weeks to deplete on very low intake) and saturable gut/renal handling cause rapid deficiency under poor diet/malabsorption. (Gandhi 2023) (gandhi2023scurvyrediscoveringa pages 1-2)
  • Early biochemical failure: Insufficient ascorbate disrupts collagen hydroxylation, compromising ECM repair and capillary integrity; fatigue may occur early via reduced catecholamines and carnitine. (Lu 2023; Gandhi 2023) (lu2023scurvyina pages 2-3, gandhi2023scurvyrediscoveringa pages 2-4)
  • Clinical evolution: Within 4–12 weeks of inadequate intake, nonspecific symptoms progress to gingival bleeding, perifollicular hemorrhages, ecchymoses, joint pain/hemarthrosis, and in children, limb pain and refusal to walk due to metaphyseal and periosteal changes. (Gandhi 2023) (gandhi2023scurvyrediscoveringa pages 4-5)
  • Advanced skeletal involvement: Osteoporosis and cortical thinning correlate with severity; growth-plate pathology and fractures may occur if untreated. (Nefihancoro 2024, Bioscientia Medicina, Jun 2024; doi:10.37275/bsm.v8i9.1066; https://doi.org/10.37275/bsm.v8i9.1066) (nefihancoro2024analysisofthe pages 4-7)
  • Reversibility: Vitamin C repletion rapidly reverses constitutional and bleeding symptoms; musculoskeletal recovery follows over weeks. (Lu 2023) (lu2023scurvyina pages 2-3)

6. Phenotypic Manifestations and mechanistic links

  • Mucocutaneous: Perifollicular hemorrhages, petechiae, ecchymoses, corkscrew hairs, gingival swelling/bleeding—due to fragile capillaries and ECM failure from defective collagen. (Gandhi 2023) (gandhi2023scurvyrediscoveringa pages 4-5)
  • Musculoskeletal: Arthralgias, hemarthrosis, muscle hematomas; in children, limp/refusal to walk; radiologic metaphyseal bands, periosteal reaction, and osteopenia—reflecting defective osteoid/calcified cartilage matrix. (Gandhi 2023) (gandhi2023scurvyrediscoveringa pages 4-5)
  • Gastrointestinal: Occult or overt bleeding due to mucosal/vascular fragility. (Gandhi 2023) (gandhi2023scurvyrediscoveringa pages 1-2)
  • Neuropsychiatric: Fatigue, depression, cognitive complaints are reported in deficiency; biologically linked to decreased NE synthesis (DBH cofactor role) and broader neurotransmitter/antioxidant roles. (Plevin 2020) (gandhi2023scurvyrediscoveringa pages 4-5)

Evidence items (with selected direct quotations)

Current applications and real‑world implementations

  • Clinical detection and radiology • Recent case reports and observational data (2023–2024) emphasize that scurvy should be considered in patients with unexplained mucocutaneous bleeding and musculoskeletal pain; radiographs/MRI can reveal metaphyseal bands, periosteal reactions, osteopenia, and cortical thinning that improve with repletion. (Lu 2023; Nefihancoro 2024) (lu2023scurvyina pages 2-3, nefihancoro2024analysisofthe pages 4-7)
  • Risk stratification and transporters • Contemporary pediatric review synthesizes transporter biology (SLC23A1/2; DHA uptake via GLUTs) and vulnerable populations (e.g., chronic disease, critical illness), informing screening and supplementation strategies. (Ramanujan 2024, Curr Pediatr Rep, May 2024; https://doi.org/10.1007/s40124-024-00315-9) (ramanujan2024vitamincis pages 7-8, ramanujan2024vitamincis pages 7-7)

Expert opinions and analysis

Relevant statistics and data (recent)

Gene/protein annotations with ontology terms

Phenotype associations (HP terms; narrative mapping)

  • Mucocutaneous bleeding (petechiae, ecchymoses), gingival hypertrophy/bleeding, poor wound healing, perifollicular hemorrhages; musculoskeletal pain/hemarthrosis; pediatric limp/refusal to walk; osteopenia/osteoporosis; cortical thinning; metaphyseal bands and periosteal reaction on imaging. Mechanistic links: collagen hydroxylation failure → ECM weakness and capillary fragility; impaired osteoid matrix. (gandhi2023scurvyrediscoveringa pages 4-5, nefihancoro2024analysisofthe pages 4-7)

Cell type involvement (CL terms; narrative mapping)

Anatomical locations (UBERON; narrative mapping)

Chemical entities (CHEBI; narrative mapping)

Transport and tissue distribution

References with URLs and dates (selected)

Notes on evidence strength and recency: We prioritized 2023–2024 clinical and review literature for modern presentations and radiologic skeletal data (Gandhi 2023; Lu 2023; Nefihancoro 2024; Ramanujan 2024). Mechanistic underpinnings referencing ascorbate’s enzymology and transporter biology are supported by these recent reviews and by established mechanistic reviews on HIF/TET dioxygenases (Fandrey 2006; Yue 2020; Morante‑Palacios 2022). Where possible, we included direct quotations for key mechanistic claims and provided DOI/URL and publication dates. (gandhi2023scurvyrediscoveringa pages 2-4, nefihancoro2024analysisofthe pages 4-7, ramanujan2024vitamincis pages 7-8, alberts2025vitaminca pages 1-2, ramanujan2024vitamincis pages 7-7)

References

  1. (gandhi2023scurvyrediscoveringa pages 1-2): Mustafa Gandhi, Omar Elfeky, Hamza Ertugrul, Harleen Kaur Chela, and Ebubekir Daglilar. Scurvy: rediscovering a forgotten disease. Diseases, 11:78, May 2023. URL: https://doi.org/10.3390/diseases11020078, doi:10.3390/diseases11020078. This article has 82 citations and is from a poor quality or predatory journal.

  2. (gandhi2023scurvyrediscoveringa pages 2-4): Mustafa Gandhi, Omar Elfeky, Hamza Ertugrul, Harleen Kaur Chela, and Ebubekir Daglilar. Scurvy: rediscovering a forgotten disease. Diseases, 11:78, May 2023. URL: https://doi.org/10.3390/diseases11020078, doi:10.3390/diseases11020078. This article has 82 citations and is from a poor quality or predatory journal.

  3. (ramanujan2024vitamincis pages 7-7): Suruchi Ramanujan, Sanu Yadav, Andrea Adler, Sara Bewley, and Kadakkal Radhakrishnan. Vitamin c: is it relevant or obsolete in the modern era? Current Pediatrics Reports, 12:35-43, May 2024. URL: https://doi.org/10.1007/s40124-024-00315-9, doi:10.1007/s40124-024-00315-9. This article has 6 citations.

  4. (gandhi2023scurvyrediscoveringa pages 4-5): Mustafa Gandhi, Omar Elfeky, Hamza Ertugrul, Harleen Kaur Chela, and Ebubekir Daglilar. Scurvy: rediscovering a forgotten disease. Diseases, 11:78, May 2023. URL: https://doi.org/10.3390/diseases11020078, doi:10.3390/diseases11020078. This article has 82 citations and is from a poor quality or predatory journal.

  5. (lu2023scurvyina pages 2-3): Rui-Ling Lu, Jie-Wen Guo, Bao-dong Sun, Yu-Lan Chen, and Dong-Zhou Liu. Scurvy in a young man: a rare case report. Frontiers in Nutrition, Oct 2023. URL: https://doi.org/10.3389/fnut.2023.1265334, doi:10.3389/fnut.2023.1265334. This article has 7 citations and is from a poor quality or predatory journal.

  6. (alberts2025vitaminca pages 1-2): Adina Alberts, Elena-Theodora Moldoveanu, Adelina-Gabriela Niculescu, and Alexandru Mihai Grumezescu. Vitamin c: a comprehensive review of its role in health, disease prevention, and therapeutic potential. Molecules, 30:748, Feb 2025. URL: https://doi.org/10.3390/molecules30030748, doi:10.3390/molecules30030748. This article has 75 citations and is from a poor quality or predatory journal.

  7. (nefihancoro2024analysisofthe pages 4-7): Udi Heru Nefihancoro and Rachmad Faisal. Analysis of the role of vitamin c hypovitaminosis in scurvy on bone health: a single center observational study at dr. moewardi general hospital, surakarta, indonesia. Bioscientia Medicina : Journal of Biomedicine and Translational Research, 8:4894-4902, Jun 2024. URL: https://doi.org/10.37275/bsm.v8i9.1066, doi:10.37275/bsm.v8i9.1066. This article has 0 citations.

  8. (ramanujan2024vitamincis pages 7-8): Suruchi Ramanujan, Sanu Yadav, Andrea Adler, Sara Bewley, and Kadakkal Radhakrishnan. Vitamin c: is it relevant or obsolete in the modern era? Current Pediatrics Reports, 12:35-43, May 2024. URL: https://doi.org/10.1007/s40124-024-00315-9, doi:10.1007/s40124-024-00315-9. This article has 6 citations.