Potential mechanism underlying HXSJ decoction in the treatment of venous leg ulcers: based on the association between venous leg ulcers and ferroptosis.
Venous leg ulcer (VLU) is among the most severe clinical manifestations of chronic venous disease (CVD) and imposes substantial burdens on both patients and society. VLU pathogenesis is closely associated with the impairment of vascular endothelial cells. In this study, tissue samples from the patients' s skins around wound at different stages of CVD were collected during operation and used to elucidate the involvement of ferroptosis in the pathogenesis of VLU. Also the potential mechanism through which Huoxue Shengji (HXSJ) decoction alleviates ferroptosis in human umbilical vein endothelial cells (HUVECs) was investigated. During surgical procedure such as great saphenous vein high ligation and stripping surgery, matched skin tissues from the normal, hyperpigmentation (HPT), lipodermatosclerosis (LDS), and VLU regions were collected from 10 patients with VLU, and the levels of iron and glutathione peroxidase 4 (GPX4) were quantified to evaluate ferroptosis. In vitro, HUVECs were used to iron overload induction using exogenous 100 µM ferric ammonium citrate (FAC) or 100 µM hemin, or ferroptosis induction with 10 µM erastin, and treated with 10µg/ml HXSJ decoction for 24h. Subsequently, lipid peroxidation (LPO) damage, mitochondrial function, and key genes involved in ferroptosis were assessed. Iron deposition in the affected skin of patients with CVD gradually increased before progression to VLU and significantly decreased during the VLU stage. Moreover, GPX4 expression increased significantly in the HPT stage but was gradually suppressed with further deterioration of CVD. The in vitro results indicated that in both the iron overload and ferroptosis models, HXSJ decoction effectively upregulated the expression of nuclear factor erythroid 2-related factor 2 (Nrf2), solute carrier family 7 member 11 (SLC7A11, xCT), and GPX4, which was accompanied by the inhibition of malondialdehyde and protein carbonylation production, the alleviation of ferrous ion accumulation, and the restoration of mitochondrial function. This study demonstrated that iron accumulation-mediated inactivation of GPX4 serves as a crucial mechanism in VLU formation through ferroptosis induction. Notably, the therapeutic mechanism through which HXSJ decoction alleviates ferroptosis involves Nrf2/xCT/GPX4 pathway activation and a reduction in ferrous ion accumulation. These findings may provide novel insights into VLU pathogenesis and give possible reason for developing traditional Chinese medicine therapies targeting ferroptosis and VLUs.
- Research Article
1
- 10.1111/jdv.2_13848
- Aug 1, 2016
- Journal of the European Academy of Dermatology and Venereology : JEADV
Chapter 1 - Epidemiology, Aetiology and Symptomatology.
- Research Article
- 10.1111/jdv.3_13848
- Aug 1, 2016
- Journal of the European Academy of Dermatology and Venereology
Chapter 2 - Diagnostics.
- Research Article
- 10.1111/jdv.9_13848
- Aug 1, 2016
- Journal of the European Academy of Dermatology and Venereology : JEADV
Chapter 8 - Life style.
- Research Article
- 10.1111/jdv.7_13848
- Aug 1, 2016
- Journal of the European Academy of Dermatology and Venereology : JEADV
Chapter 6 - Oral medication.
- Research Article
- 10.1111/jdv.4_13848
- Aug 1, 2016
- Journal of the European Academy of Dermatology and Venereology : JEADV
Chapter 3 - Compression therapy.
- Research Article
40
- 10.1016/j.jvs.2009.01.003
- Mar 1, 2009
- Journal of Vascular Surgery
Leg ulcer treatment
- Abstract
10
- 10.1016/j.jvs.2010.05.124
- Oct 28, 2010
- Journal of Vascular Surgery
The definition of the venous ulcer
- Research Article
199
- 10.1111/j.1524-475x.2006.00174.x
- Nov 1, 2006
- Wound Repair and Regeneration
1. Co-chaired this panel2. University of South Florida, Tampa, FL3. Healthpoint Ltd., Fort Worth, TX4. University of California, San Francisco, CA5. University of Texas Medical Branch, Galveston, TX6. University of Cardiff, Cardiff, Wales, UK7. University of Pennsylvania, Philadelphia, PA8. Private practice, Warren, PA9. Private practice, Tamarac, FL10. University of Pittsburgh, Pittsburgh, PA11. St. Louis University, St. Louis, MO, and12. Washington University, St. Louis, MO
- Research Article
497
- 10.1161/01.cir.0000164199.72440.08
- May 10, 2005
- Circulation
Chronic Venous Insufficiency
- Supplementary Content
47
- 10.1007/s12325-020-01219-y
- Jan 1, 2020
- Advances in Therapy
Venous leg ulcers (VLUs) are the most severe manifestation of chronic venous disease (CVD). Due to their chronic nature, high recurrence rate and slow healing time, VLUs account for 80% of all leg ulcers seen in patients with CVD. VLUs impose a heavy burden on patients that reduces their quality of life; VLUs also represent a major socioeconomic impact due to the cost and duration of care. The primary medical approach to treating VLUs is local compression therapy in combination with venoactive drug (VAD) pharmacotherapy to promote the reduction of the inflammatory reaction initiated by venous hypertension. Micronized purified flavonoid fraction (MPFF; Daflon®) is the most widely prescribed VAD. MPFF counteracts the pathophysiologic mechanisms of CVD and ulceration and has proven to be an effective adjunct to compression therapy in patients with large and chronic VLUs. Two other non-VAD drugs, pentoxifylline and sulodexide, have also been shown to improve VLU healing and are also recommended in addition to compression therapy. However, MPFF is the only VAD with the highest strength of recommendations in the 2018 guidelines for the healing of VLUs.
- Research Article
85
- 10.1016/j.jvs.2010.08.059
- Nov 3, 2010
- Journal of Vascular Surgery
Intermittent pneumatic compression: Physiologic and clinical basis to improve management of venous leg ulcers
- Research Article
144
- 10.1016/j.jvs.2008.11.069
- Feb 23, 2009
- Journal of Vascular Surgery
Risk factors related to the failure of venous leg ulcers to heal with compression treatment
- Research Article
76
- 10.1016/j.jvsv.2014.04.006
- Oct 1, 2014
- Journal of Vascular Surgery: Venous and Lymphatic Disorders
The real cost of treating venous ulcers in a contemporary vascular practice.
- Research Article
- 10.32385/rpmgf.v32i3.11562
- May 1, 2016
Aim: To review the evidence for the efficacy and safety of pentoxifylline for the treatment of venous leg ulcers. Data sources: The MEDLINE database and the following evidence based medical sites: National Guideline Clearinghouse, Canadian Medical Association Practice Guidelines InfoBase, Guidelines Finder, Database of Abstracts of Reviews of Effectiveness – Centre for Reviews and Dissemination, Bandolier, and The Cochrane Library. Review methods: Clinical guidelines, systematic reviews, meta-analyses, and randomized controlled trials published between January 2003 and July 2015 in English, Portuguese and Spanish were collected using the MeSH terms: pentoxifylline and venous ulcers. The Strength of Recommendation Taxonomy (SORT) scale of the American Academy of Family Physicians was used for assigning levels of evidence and the strength of recommendation. Results: Of the 51 articles found, six fulfilled the inclusion criteria and were selected for review. These included two clinical guidelines, one meta-analysis, one systematic review, and two clinical trials. A 400mg tablet of pentoxifylline taken three times a day increases the chance of healing of venous ulcers with or without compression. This drug is also cost effective in the treatment of chronic venous leg ulcers. The majority of adverse effects were gastrointestinal disturbances. Conclusions: These studies found pentoxifylline to be efficacious and cost effective in the treatment of chronic venous leg ulcers in adults. It can be used with compression bandaging but should also be considered for use in people unable to tolerate compression (Strength of Recommendation A – SOR A). Given the side effects reported, the optimal dose that combines efficacy and tolerability with maximal therapeutic adherence remains to be determined.
- Research Article
30
- 10.1177/0268355513477066
- Mar 1, 2013
- Phlebology: The Journal of Venous Disease
Leg and foot ulcers are symptoms of very different diseases. The aim of this paper is to demonstrate the differential diagnosis of leg ulcers. The majority of leg ulcers occur in the lower leg or foot. In non-venous ulcers the localization in the foot area is more frequent. The most frequent underlying disease is chronic venous disease. In 354 leg ulcers, Koerber found 75.25% venous leg ulcers, 3.66% arterial leg ulcers, 14.66% ulcers of mixed venous and arterial origin and 13.5% vasculitic ulcers. In the Swedish population of Skaraborg, Nelzen found a venous origin in 54% of the ulcer patients. Each leg ulcer needs a clinical and anamnestic evaluation. Duplex ultrasound is the basic diagnostic tool to exclude vascular anomalies especially chronic venous and arterial occlusive disease. Skin biopsies help to find a correct diagnosis in unclear or non-healing cases. In conclusion, chronic venous disease is the most frequent cause of leg ulcerations. Because 25% of the population have varicose veins or other chronic venous disease the coincidence of pathological venous findings and ulceration is very frequent even in non-venous ulcerations. Leg ulcers without the symptoms of chronic venous disease should be considered as non-venous.
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