Lymphatic vascular integrity is disrupted in type 2 diabetes due to impaired nitric oxide signalling
Open accessAbstract
AIMS: Lymphatic vessel dysfunction is an emerging component of metabolic diseases and can lead to tissue lipid accumulation, dyslipidaemia, and oedema. While lymph leakage has been implicated in obesity and hypercholesterolaemia, whether similar lymphatic dysfunction exists in diabetes has not been investigated. METHODS AND RESULTS: To measure the lymphatic integrity of transgenic mice, we developed a new assay that quantifies the solute permeability of murine collecting lymphatic vessels. Compared with age-matched wild-type (WT) controls, the permeability of collecting lymphatics from diabetic, leptin receptor-deficient (db/db) mice was elevated >130-fold. Augmenting nitric oxide (NO) production by suffusion of l-arginine rescued this defect. Using pharmacological tools and eNOS(-/-) mice, we found that NO increased WT lymphatic permeability, but reduced db/db lymphatic permeability. These conflicting actions of NO were reconciled by the finding that phosphodiesterase 3 (PDE3), normally inhibited by NO signalling, was active in db/db lymphatics and inhibition of this enzyme restored barrier function. CONCLUSION: In conclusion, we identified the first lymphatic vascular defect in type 2 diabetes, an enhanced permeability caused by low NO bioavailability. Further, this demonstrates that PDE3 inhibition is required to maintain lymphatic vessel integrity and represents a viable therapeutic target for lymphatic endothelial dysfunction in metabolic disease.
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Collecting vessel permeability to albumin is comparable to that of venules.
“Collecting vessel permeability to albumin has been measured only in a few studies (31–33) and is comparable to that of venules.”
From Transport and Immune Functions of the Lymphatic System. (2025) · cites this paper as [33]
Section 3.1 reports measurements of albumin permeability in collecting lymphatics but concludes that lymphatic permeability is higher than that of venular microvessels when measured at the same hydrostatic pressures, rather than comparable. (LLM, conf=0.88)
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Experimental — accuracy not yet measuredLymphatic collecting vessel hyperpermeability has been demonstrated in animal models of type 2 diabetes.
“For example, lymphatic collecting vessel hyperpermeability has been demonstrated in animal models of type 2 diabetes (33)”
From Transport and Immune Functions of the Lymphatic System. (2025) · cites this paper as [33]
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Self-citation
- Authors
- Scallan, J. P., Hill, M. A., & Davis, M. J.
- Affiliations
- University of Missouri (US)
- Corresponding author
- Davis, Michael J.
- Venue
- Cardiovascular Research
- Publisher
- Oxford University Press (OUP)
- Published
- 2015-04-07
- Volume
- 107
- Issue
- 1
- Pages
- 89-97
- ISSN
- 0008-6363 (ISSN-L)
- 1755-3245
- PMC
- PMC4490202
- OpenAlex
- W1970920203
- Cited by
- 147
- References
- 4
- Citations by year
- 2026: 13 · 2025: 10 · 2024: 14 · 2023: 18 · 2022: 18 · 2021: 14 · 2020: 17 · 2019: 9 · 2018: 10 · 2017: 10 · 2016: 12 · 2015: 1
- FWCI
- 4.80
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Cardiovascular Research (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health (HL 095486)
- National Heart, Lung, and Blood Institute (R01HL085119, R01HL120867, HL095486, P01HL095486, K99HL124142, R01HL089784)
- Topics
- Health Sciences › Medicine › Oncology › Lymphatic System and Diseases
- Health Sciences › Medicine › Surgery › Lymphatic Disorders and Treatments
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
- Keywords
- type 2 diabetes, nitric oxide signaling, lymphatic permeability, phosphodiesterase 3, endothelial nitric oxide synthase, db/db mice, leptin receptor deficiency, L-arginine, metabolic disorders
- MeSH terms
- Animals, Arginine, Capillary Permeability, Diabetes Mellitus, Type 2, Female, Male, Mice, Inbred C57BL, Nitric Oxide, Signal Transduction, Lymphatic Vessels, Mice, Phosphodiesterase 3 Inhibitors
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