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Ishikawa M, Uchiyama A, Kosaka K, Nishio M, Ogino S, Yokoyama Y, Torii R, Akai R, Iwawaki T, Torii S, Motegi SI. Exposure to volatile ferroptosis inhibitor, TEMPO, reduced cutaneous ischemia-reperfusion injury progression to pressure ulcer formation in a mouse model. J Dermatol Sci 2024:S0923-1811(24)00151-8. [PMID: 39098373 DOI: 10.1016/j.jdermsci.2024.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 06/21/2024] [Accepted: 07/23/2024] [Indexed: 08/06/2024]
Abstract
BACKGROUND Ischemia- reperfusion (I/R) injury-induced oxidative stress is a key factor in the pathogenesis of pressure ulcer formation. Ferroptosis is an iron-dependent programmed cell death that connects oxidative stress and inflammation in various diseases. Recent studies revealed the protective effect of inhibition of ferroptosis in I/R injury. However, the role of ferroptosis in cutaneous I/R injury remains elusive. OBJECTIVE To assess the role of ferroptosis in the progression of cutaneous I/R injury. METHODS Cutaneous I/R injury experiments and histopathological studies were performed in wild-type mice with or without exposure to volatile ferroptosis inhibitor, TEMPO (2,2,6,6-Tetramethylpiperidine-1-oxyl). The suppressive effects of TEMPO on ferroptosis inducing cell death and oxidative stress were examined in vitro. RESULTS Inhibition of ferroptosis with TEMPO significantly reduced ulcer formation after cutaneous I/R injury. Fluctuated ferroptosis markers, such as GPX4, ACSL4, and 4-HNE expression in the I/R skin site, were reversed by TEMPO treatment. Inhibition of ferroptosis reduced apoptosis, CD3+ infiltrating lymphocytes, and improved vascularity in the I/R skin site. Inhibition of ferroptosis also suppressed the enhancement of Nrf2 activation. In vitro, ferroptosis and the activation of ferroptosis-related gene expression by RSL3 stimulation were markedly ameliorated by TEMPO treatment in mouse fibroblasts. Inhibiting ferroptosis also suppressed the elevation of the mRNA levels of NOX2 and HO-1 caused by ferroptosis. CONCLUSION Cutaneous I/R injury-induced ferroptosis likely promotes cell death, vascular loss, infiltration of inflammatory cells, and oxidative stress. The inhibition of ferroptosis with TEMPO might have potential clinical application as novel therapeutic agent for cutaneous I/R injury.
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Affiliation(s)
- Mai Ishikawa
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Akihiko Uchiyama
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan.
| | - Keiji Kosaka
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Mayu Nishio
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Sachiko Ogino
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yoko Yokoyama
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Ryoko Torii
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Ryoko Akai
- Division of Cell Medicine, Department of Life Science, Medical Research Institute, Kanazawa Medical University, Ishikawa, Japan
| | - Takao Iwawaki
- Division of Cell Medicine, Department of Life Science, Medical Research Institute, Kanazawa Medical University, Ishikawa, Japan
| | - Seiji Torii
- Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan; Center for Food Science and Wellness, Gunma University, Maebashi, Japan
| | - Sei-Ichiro Motegi
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
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Pei J, Wei Y, Lv L, Tao H, Zhang H, Ma Y, Han L. Preliminary evidence for the presence of programmed cell death in pressure injuries. J Tissue Viability 2024:S0965-206X(24)00117-7. [PMID: 39095251 DOI: 10.1016/j.jtv.2024.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 05/23/2024] [Accepted: 07/21/2024] [Indexed: 08/04/2024]
Abstract
Pressure injuries (PIs) are a common healthcare problem worldwide and are considered to be the most expensive chronic wounds after arterial ulcers. Although the gross factors including ischemia-reperfusion (I/R) have been identified in the etiology of PIs, the precise cellular and molecular mechanisms contributing to PIs development remain unclear. Various forms of programmed cell death including apoptosis, autophagy, pyroptosis, necroptosis and ferroptosis have been identified in PIs. In this paper, we present a detailed overview on various forms of cell death; discuss the recent advances in the roles of cell death in the occurrence and development of PIs and found much of the evidence is novel and based on animal experiments. Herein, we also state critical evaluation of the existing data and future perspective in the field. A better understanding of the programmed cell death mechanism in PIs may have important implications in driving the development of new preventive and therapeutic strategies.
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Affiliation(s)
- Juhong Pei
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Yuting Wei
- School of Nursing, Lanzhou University, Lanzhou, Gansu, China
| | - Lin Lv
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Hongxia Tao
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - HongYan Zhang
- Department of Nursing, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - YuXia Ma
- School of Nursing, Lanzhou University, Lanzhou, Gansu, China
| | - Lin Han
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; School of Nursing, Lanzhou University, Lanzhou, Gansu, China; Department of Nursing, Gansu Provincial Hospital, Lanzhou, Gansu, China.
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3
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Lu Y, Xie XN, Xin QQ, Yuan R, Miao Y, Cong WH, Chen KJ. Advance on Chinese Medicine for Hypertensive Renal Damage: Focus on the Complex Molecular Mechanisms. Chin J Integr Med 2024:10.1007/s11655-024-3662-3. [PMID: 38958884 DOI: 10.1007/s11655-024-3662-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2024] [Indexed: 07/04/2024]
Abstract
Hypertensive renal damage (HRD) is a major cause of end-stage renal disease. Among the causes of end-stage renal disease, HRD accounts for nearly 34% of the total number of cases. Antihypertensive treatment is primarily drug-based, but therapeutic efficacy is less effective and can have serious side effects. Chinese medicine (CM) has significant advantages in the treatment of HRD. CM is rich in various active ingredients and has the property of targeting multiple targets and channels. Therefore, the regulatory network of CM on disease is complex. A large number of CM have been employed to treat HRD, either as single applications or as part of compound formulations. The key possible mechanisms of CM for HRD include regulation of the renin-angiotensin-aldosterone system, antioxidation, anti-inflammation, rescue of endothelial function, regulation of vasoactive substance secretion and obesity-related factors, etc. This review summarized and discussed the recent advance in the basic research mechanisms of CM interventions for HRD and pointed out the challenges and future prospects.
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Affiliation(s)
- Yan Lu
- Laboratory of Cardiovascular Diseases, Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing, 100091, China
| | - Xue-Na Xie
- School of Pharmacy, Macau University of Science and Technology, Taipa, Macau, 999078, China
| | - Qi-Qi Xin
- Laboratory of Cardiovascular Diseases, Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing, 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing, 100091, China
| | - Rong Yuan
- Laboratory of Cardiovascular Diseases, Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing, 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing, 100091, China
| | - Yu Miao
- Laboratory of Cardiovascular Diseases, Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing, 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing, 100091, China
| | - Wei-Hong Cong
- Laboratory of Cardiovascular Diseases, Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing, 100091, China.
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing, 100091, China.
| | - Ke-Ji Chen
- Laboratory of Cardiovascular Diseases, Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing, 100091, China
- National Clinical Research Center for Chinese Medicine Cardiology, Beijing, 100091, China
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4
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Aldaghi N, kamalabadi-Farahani M, Alizadeh M, Alizadeh A, Salehi M. Enhancing pressure ulcer healing and tissue regeneration by using N-acetyl-cysteine loaded carboxymethyl cellulose/gelatin/sodium alginate hydrogel. Biomed Eng Lett 2024; 14:833-845. [PMID: 38946815 PMCID: PMC11208367 DOI: 10.1007/s13534-024-00378-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 01/27/2024] [Accepted: 03/31/2024] [Indexed: 07/02/2024] Open
Abstract
Prolonged pressure on the skin can result in pressure ulcers, which may lead to serious complications, such as infection and tissue damage. In this study, we evaluated the effect of a carboxymethyl cellulose/gelatin/sodium alginate (CMC/Gel/Alg) hydrogel containing N-acetyl-cysteine (NAC) on the healing of pressure ulcers. Pressure ulcers were induced by applying a magnet to the dorsum of rat skin. The wounds were then treated with sterile gauze, ChitoHeal Gel®, and CMC/Gel/Alg hydrogel dressings with or without NAC for the other groups. We evaluated the morphology, weight loss, swelling, rheology, blood compatibility, cytocompatibility, antioxidant capacity, and wound scratch of the prepared hydrogel. MTT assay revealed that the optimum concentration of NAC was 5 mg/ml, which induced higher cell proliferation and viability. Results of the histopathological evaluation showed increased wound closure, and complete re-epithelialization in the hydrogel-containing NAC group compared to the other groups. The CMC/Gel/Alg/5 mg/ml NAC hydrogel dressing showed 84% wound closure at 14 days after treatment. Immunohistochemical results showed a decrease in the level of TNF-α on day 14 compared day 7. Results of the qPCR assay revealed that NAC hydrogel increased the expression of Collagen type I and TGF-β1 and decreased MMP2 and MMP9 mRNA on the 14th day. The results suggest that the CMC/Gel/Alg/5 mg/ml NAC hydrogel with antioxidant properties is an appropriate dressing for wound healing.
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Affiliation(s)
- Niloofar Aldaghi
- Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | | | - Morteza Alizadeh
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Akram Alizadeh
- Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran
- Department of Tissue Engineering and Applied Cell Sciences, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Majid Salehi
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
- Tissue Engineering and Stem Cells Research Center, Shahroud University of Medical Sciences, Shahroud, Iran
- Health Technology Incubator Center, Shahroud University of Medical Sciences, Shahroud, Iran
- Sexual Health and Fertility Research Center, Shahroud University of Medical Sciences, Shahroud, Iran
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5
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Varra FN, Varras M, Varra VK, Theodosis-Nobelos P. Molecular and pathophysiological relationship between obesity and chronic inflammation in the manifestation of metabolic dysfunctions and their inflammation‑mediating treatment options (Review). Mol Med Rep 2024; 29:95. [PMID: 38606791 PMCID: PMC11025031 DOI: 10.3892/mmr.2024.13219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/17/2024] [Indexed: 04/13/2024] Open
Abstract
Obesity reaches up to epidemic proportions globally and increases the risk for a wide spectrum of co‑morbidities, including type‑2 diabetes mellitus (T2DM), hypertension, dyslipidemia, cardiovascular diseases, non‑alcoholic fatty liver disease, kidney diseases, respiratory disorders, sleep apnea, musculoskeletal disorders and osteoarthritis, subfertility, psychosocial problems and certain types of cancers. The underlying inflammatory mechanisms interconnecting obesity with metabolic dysfunction are not completely understood. Increased adiposity promotes pro‑inflammatory polarization of macrophages toward the M1 phenotype, in adipose tissue (AT), with subsequent increased production of pro‑inflammatory cytokines and adipokines, inducing therefore an overall, systemic, low‑grade inflammation, which contributes to metabolic syndrome (MetS), insulin resistance (IR) and T2DM. Targeting inflammatory mediators could be alternative therapies to treat obesity, but their safety and efficacy remains to be studied further and confirmed in future clinical trials. The present review highlights the molecular and pathophysiological mechanisms by which the chronic low‑grade inflammation in AT and the production of reactive oxygen species lead to MetS, IR and T2DM. In addition, focus is given on the role of anti‑inflammatory agents, in the resolution of chronic inflammation, through the blockade of chemotactic factors, such as monocytes chemotractant protein‑1, and/or the blockade of pro‑inflammatory mediators, such as IL‑1β, TNF‑α, visfatin, and plasminogen activator inhibitor‑1, and/or the increased synthesis of adipokines, such as adiponectin and apelin, in obesity‑associated metabolic dysfunction.
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Affiliation(s)
- Fani-Niki Varra
- Department of Pharmacy, School of Health Sciences, Frederick University, Nicosia 1036, Cyprus
- Medical School, Dimocritus University of Thrace, Alexandroupolis 68100, Greece
| | - Michail Varras
- Fourth Department of Obstetrics and Gynecology, ‘Elena Venizelou’ General Hospital, Athens 11521, Greece
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Vlachou E, Johnson BA, Baraban E, Nadal R, Hoffman-Censits J. Current Advances in the Management of Nonurothelial Subtypes of Bladder Cancer. Am Soc Clin Oncol Educ Book 2024; 44:e438640. [PMID: 38870453 DOI: 10.1200/edbk_438640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Urothelial cancer (UC) is the most common histology seen in bladder tumors. The 2022 WHO classification of urinary tract tumors includes a list of less common subtypes (formerly known as variants) for invasive UC which are considered high-grade tumors. This review summarizes the most recent advances in the management of selected nonurothelial subtypes of bladder cancer: squamous cell carcinoma, small cell carcinoma, sarcomatoid urothelial carcinoma, micropapillary carcinoma, plasmacytoid carcinoma, adenocarcinoma, and urachal carcinoma. The role of neoadjuvant and adjuvant chemotherapy has not been well characterized for most of these histologies, and prospective data are extremely limited. Participation in clinical trials is recommended in advanced disease.
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Affiliation(s)
- Evangelia Vlachou
- Johns Hopkins University Sidney Kimmel Comprehensive Cancer Center, Baltimore, MD
- The Johns Hopkins Greenberg Bladder Cancer Institute, Baltimore, MD
| | - Burles Avner Johnson
- Johns Hopkins University Sidney Kimmel Comprehensive Cancer Center, Baltimore, MD
- The Johns Hopkins Greenberg Bladder Cancer Institute, Baltimore, MD
| | - Ezra Baraban
- Department of Pathology, Johns Hopkins Hospital, Baltimore, MD
| | - Rosa Nadal
- Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Jean Hoffman-Censits
- Johns Hopkins University Sidney Kimmel Comprehensive Cancer Center, Baltimore, MD
- The Johns Hopkins Greenberg Bladder Cancer Institute, Baltimore, MD
- Department of Pathology, Johns Hopkins Hospital, Baltimore, MD
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7
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Inoue Y, Uchiyama A, Amalia SN, Ishikawa M, Kosaka K, Sekiguchi A, Ogino S, Yokoyama Y, Torii R, Hosoi M, Akai R, Iwawaki T, Morasso MI, Motegi SI. Keratinocyte-Specific SOX2 Overexpression Suppressed Pressure Ulcer Formation after Cutaneous Ischemia-Reperfusion Injury via Enhancement of Amphiregulin Production. J Invest Dermatol 2024; 144:142-151.e5. [PMID: 37516309 PMCID: PMC10822028 DOI: 10.1016/j.jid.2023.06.202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 06/06/2023] [Accepted: 06/30/2023] [Indexed: 07/31/2023]
Abstract
Ischemia-reperfusion (I/R) injury is a key player in the pathogeneses of pressure ulcer formation. Our previous work demonstrated that inducing the transcription factor SOX2 promotes cutaneous wound healing through EGFR signaling pathway enhancement. However, its protective effect on cutaneous I/R injury was not well-characterized. We aimed to assess the role of SOX2 in cutaneous I/R injury and the tissue-protective effect of SOX2 induction in keratinocytes (KCs) in cutaneous I/R injury. SOX2 was transiently expressed in KCs after cutaneous I/R injury. Ulcer formation was significantly suppressed in KC-specific SOX2-overexpressing mice. SOX2 in skin KCs significantly suppressed the infiltrating inflammatory cells, apoptotic cells, vascular damage, and hypoxic areas in cutaneous I/R injury. Oxidative stress-induced mRNA levels of inflammatory cytokine expression were suppressed, and antioxidant stress factors and amphiregulin were elevated by SOX2 induction in skin KCs. Recombinant amphiregulin administration suppressed pressure ulcer development after cutaneous I/R injury in mice and suppressed oxidative stress-induced ROS production and apoptosis in vitro. These findings support that SOX2 in KCs might regulate cutaneous I/R injury through amphiregulin production, resulting in oxidative stress suppression. Recombinant amphiregulin can be a potential therapeutic agent for cutaneous I/R injury.
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Affiliation(s)
- Yuta Inoue
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Akihiko Uchiyama
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan.
| | - Syahla Nisaa Amalia
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Mai Ishikawa
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Keiji Kosaka
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Akiko Sekiguchi
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Sachiko Ogino
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yoko Yokoyama
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Ryoko Torii
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Mari Hosoi
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Ryoko Akai
- Division of Cell Medicine, Department of Life Science, Medical Research Institute, Kanazawa Medical University, Ishikawa, Japan
| | - Takao Iwawaki
- Division of Cell Medicine, Department of Life Science, Medical Research Institute, Kanazawa Medical University, Ishikawa, Japan
| | - Maria I Morasso
- Laboratory of Skin Biology, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Sei-Ichiro Motegi
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
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Zhao Q, Xue M, Li Y, Zheng Y, Xu Z, Li Z. Preliminary study on a novel biological scaffold loaded with Apelin -13 sustained -release microcapsules for promoting fallopian tube recanalization in rabbits. ZHONG NAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF CENTRAL SOUTH UNIVERSITY. MEDICAL SCIENCES 2023; 48:1304-1315. [PMID: 38044641 PMCID: PMC10929861 DOI: 10.11817/j.issn.1672-7347.2023.230067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Indexed: 12/05/2023]
Abstract
OBJECTIVES Tubal factor infertility severely impairs the natural fertility of women, and there is for genuine tubal recanalization, including restoration of both the anatomy and function of the diseased fallopian tubes. Currently, there is no effective treatment available. This study aims to explore methods for promoting the repair and recanalization of fallopian tubes from these 2 aspects. METHODS Apelin-13 sustained-release microspheres and poly (lactic-co-glycolic acid) (PLGA) three-dimensional (3D) biodegradable scaffolds were prepared. The basic characteristics and in vivo degradation (mass loss rate) of the biodegradable scaffolds were tested, along with the in vitro drug release (cumulative release rate), the in vivo drug release (Apelin-13 plasma concentration), and in vitro degradation (degradation rate) of the microspheres. The Apelin-13 microspheres (microsphere group)/PLGA 3D scaffolds loaded with Apelin-13 sustained-release microspheres (scaffold-microcapsule group) were injected/placed into the fallopian tubes of New Zealand rabbit of chronic salpingitis models. The patency, microscopic structure, and positive expression of estrogen receptor and progesterone receptor of the fallopian tubes in the control group, the model group, the microcapsule group, and the scaffold-microcapsule group was observed and compared. RESULTS At the 4th week post-operation, the mass loss rate of the PLGA 3D scaffolds, the degradation rate of the microspheres, and the Apelin-13 sustained-release microspheres-generated cumulative release rate in vitro over 30 days were 98.66%, 70.58%, and 98.68% respectively. The plasma concentration of Apelin-13 reached its peak within 5 days and remained stable for 25 days. Compared with the model and microsphere groups, the scaffold-microsphere group showed a milder inflammatory reaction within the tubal lumen, a higher rate of fallopian tube patency, and higher expression levels of estrogen and progesterone receptors (all P<0.05). The indicators of the scaffold-microsphere group were close to those of the control group. CONCLUSIONS The PLGA 3D scaffolds loaded with Apelin-13 sustained-release microspheres can comprehensively repair the anatomical structure and physiological function of the fallopian tubes and hold promise for truly effective tubal recanalization.
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Affiliation(s)
- Qun Zhao
- Health Management Center, Third Xiangya Hospital, Central South University, Changsha 410013.
| | - Min Xue
- Department of Gynecology, Third Xiangya Hospital, Central South University, Changsha 410013
| | - Yuyan Li
- Queen Mary School, Nanchang University, Nanchang 330031
| | - Yifan Zheng
- Department of Orthopedics, Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - Zhewei Xu
- Department of Orthopedics, Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - Zhiyue Li
- Department of Orthopedics, Third Xiangya Hospital, Central South University, Changsha 410013, China.
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Luo L, Zhang H, Zhang S, Luo C, Kan X, Lv J, Zhao P, Tian Z, Li C. Extracellular vesicle-derived silk fibroin nanoparticles loaded with MFGE8 accelerate skin ulcer healing by targeting the vascular endothelial cells. J Nanobiotechnology 2023; 21:455. [PMID: 38017428 PMCID: PMC10685683 DOI: 10.1186/s12951-023-02185-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 11/02/2023] [Indexed: 11/30/2023] Open
Abstract
BACKGROUND Reduced supplies of oxygen and nutrients caused by vascular injury lead to difficult-to-heal pressure ulcers (PU) in clinical practice. Rapid vascular repair in the skin wound is the key to the resolution of this challenge, but clinical measures are still limited. We described the beneficial effects of extracellular vesicle-derived silk fibroin nanoparticles (NPs) loaded with milk fat globule EGF factor 8 (MFGE8) on accelerating skin blood vessel and PU healing by targeting CD13 in the vascular endothelial cells (VECs). METHODS CD13, the specific targeting protein of NGR, and MFGE8, an inhibitor of ferroptosis, were detected in VECs and PU tissues. Then, NPs were synthesized via silk fibroin, and MFGE8-coated NPs (NPs@MFGE8) were assembled via loading purified protein MFGE8 produced by Chinese hamster ovary cells. Lentivirus was used to over-express MFGE8 in VECs and obtained MFGE8-engineered extracellular vesicles (EVs-MFGE8) secreted by these VECs. The inhibitory effect of EVs-MFGE8 or NPs@MFGE8 on ferroptosis was detected in vitro. The NGR peptide cross-linked with NPs@MFGE8 was assembled into NGR-NPs@MFGE8. Collagen and silk fibroin were used to synthesize the silk fibroin/collagen hydrogel. After being loaded with NGR-NPs@MFGE8, silk fibroin/collagen hydrogel sustained-release carrier was synthesized to investigate the repair effect on PU in vivo. RESULTS MFGE8 was decreased, and CD13 was increased in PU tissues. Similar to the effect of EVs-MFGE8 on inhibiting ferroptosis, NPs@MFGE8 could inhibit the mitochondrial autophagy-induced ferroptosis of VECs. Compared with the hydrogels loaded with NPs or NPs@MFGE8, the hydrogels loaded with NGR-NPs@MFGE8 consistently released NGR-NPs@MFGE8 targeting CD13 in VECs, thereby inhibiting mitochondrial autophagy and ferroptosis caused by hypoxia and accelerating wound healing effectively in rats. CONCLUSIONS The silk fibroin/collagen hydrogel sustained-release carrier loaded with NGR-NPs@MFGE8 was of great significance to use as a wound dressing to inhibit the ferroptosis of VECs by targeting CD13 in PU tissues, preventing PU formation and promoting wound healing.
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Affiliation(s)
- Liwen Luo
- Department of Orthopaedics, Xinqiao Hospital, Army Medical University (Third Military Medical University), 83, Xinqiao St, Shapingba District, Chongqing, 400037, China
| | - Hongyu Zhang
- Department of Emergency, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Shiyu Zhang
- Department of Orthopaedics, Xinqiao Hospital, Army Medical University (Third Military Medical University), 83, Xinqiao St, Shapingba District, Chongqing, 400037, China
| | - Chengqin Luo
- Department of Emergency, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xuewei Kan
- Department of Dermatology, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Jun Lv
- Department of Pharmacy, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, 400038, China
| | - Ping Zhao
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, 2, Tiansheng Road, Beibei District, Chongqing, 400715, China.
| | - Zhiqiang Tian
- Institute of Immunology, PLA, Army Medical University (Third Military Medical University), 30 Gaotanyan St, Shapingba District, Chongqing, 400038, China.
- State Key Laboratory of Silkworm Genome Biology, Biological Science Research Center, Southwest University, 2, Tiansheng Road, Beibei District, Chongqing, 400715, China.
| | - Changqing Li
- Department of Orthopaedics, Xinqiao Hospital, Army Medical University (Third Military Medical University), 83, Xinqiao St, Shapingba District, Chongqing, 400037, China.
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Louis B, Nail V, Nachar O, Bouhlel A, Moyon A, Balasse L, Simoncini S, Chabert A, Fernandez S, Brige P, Hache G, Tintaru A, Morgat C, Dignat-George F, Garrigue P, Guillet B. Design and preclinical evaluation of a novel apelin-based PET radiotracer targeting APJ receptor for molecular imaging of angiogenesis. Angiogenesis 2023; 26:463-475. [PMID: 36973482 PMCID: PMC10328853 DOI: 10.1007/s10456-023-09875-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 03/17/2023] [Indexed: 03/29/2023]
Abstract
APJ has been extensively described in the pathophysiology of angiogenesis and cell proliferation. The prognostic value of APJ overexpression in many diseases is now established. This study aimed to design a PET radiotracer that specifically binds to APJ. Apelin-F13A-NODAGA (AP747) was synthesized and radiolabeled with gallium-68 ([68Ga]Ga-AP747). Radiolabeling purity was excellent (> 95%) and stable up to 2 h. Affinity constant of [67Ga]Ga-AP747 was measured on APJ-overexpressing colon adenocarcinoma cells and was in nanomolar range. Specificity of [68Ga]Ga-AP747 for APJ was evaluated in vitro by autoradiography and in vivo by small animal PET/CT in both colon adenocarcinoma mouse model and Matrigel plug mouse model. Dynamic of [68Ga]Ga-AP747 PET/CT biodistributions was realized on healthy mice and pigs for two hours, and quantification of signal in organs showed a suitable pharmacokinetic profile for PET imaging, largely excreted by urinary route. Matrigel mice and hindlimb ischemic mice were submitted to a 21-day longitudinal follow-up with [68Ga]Ga-AP747 and [68Ga]Ga-RGD2 small animal PET/CT. [68Ga]Ga-AP747 PET signal in Matrigel was significantly more intense than that of [68Ga]Ga-RGD2. Revascularization of the ischemic hind limb was followed by LASER Doppler. In the hindlimb, [68Ga]Ga-AP747 PET signal was more than twice higher than that of [68Ga]Ga-RGD2 on day 7, and significantly superior over the 21-day follow-up. A significant, positive correlation was found between the [68Ga]Ga-AP747 PET signal on day 7 and late hindlimb perfusion on day 21. We developed a new PET radiotracer that specifically binds to APJ, [68Ga]Ga-AP747 that showed more efficient imaging properties than the most clinically advanced tracer of angiogenesis, [68Ga]Ga-RGD2.
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Affiliation(s)
- Béatrice Louis
- Aix Marseille Univ, INSERM, INRAE, C2VN, Marseille, France
- Aix Marseille Univ, CNRS, CERIMED, Marseille, France
| | - Vincent Nail
- Aix Marseille Univ, INSERM, INRAE, C2VN, Marseille, France
- Aix Marseille Univ, CNRS, CERIMED, Marseille, France
- Assistance Publique - Hôpitaux de Marseille, Pôle Pharmacie, Radiopharmacie, Marseille, France
| | - Oriane Nachar
- Aix Marseille Univ, INSERM, INRAE, C2VN, Marseille, France
- Aix Marseille Univ, CNRS, CERIMED, Marseille, France
- Assistance Publique - Hôpitaux de Marseille, Pôle Pharmacie, Radiopharmacie, Marseille, France
| | - Ahlem Bouhlel
- Aix Marseille Univ, INSERM, INRAE, C2VN, Marseille, France
- Aix Marseille Univ, CNRS, CERIMED, Marseille, France
| | - Anaïs Moyon
- Aix Marseille Univ, INSERM, INRAE, C2VN, Marseille, France
- Aix Marseille Univ, CNRS, CERIMED, Marseille, France
- Assistance Publique - Hôpitaux de Marseille, Pôle Pharmacie, Radiopharmacie, Marseille, France
| | - Laure Balasse
- Aix Marseille Univ, CNRS, CERIMED, Marseille, France
| | | | | | | | - Pauline Brige
- Aix Marseille Univ, CNRS, CERIMED, Marseille, France
- Aix Marseille Univ, LIIE, Marseille, France
| | - Guillaume Hache
- Aix Marseille Univ, INSERM, INRAE, C2VN, Marseille, France
- Aix Marseille Univ, CNRS, CERIMED, Marseille, France
| | - Aura Tintaru
- Aix Marseille Univ, CNRS, CINaM, Marseille, France
| | - Clément Morgat
- Univ. Bordeaux, CNRS, INCIA, UMR 5287, 33000, Bordeaux, France
- Nuclear Medicine Department, University Hospital of Bordeaux, 33000, Bordeaux, France
| | | | - Philippe Garrigue
- Aix Marseille Univ, INSERM, INRAE, C2VN, Marseille, France.
- Aix Marseille Univ, CNRS, CERIMED, Marseille, France.
- Assistance Publique - Hôpitaux de Marseille, Pôle Pharmacie, Radiopharmacie, Marseille, France.
| | - Benjamin Guillet
- Aix Marseille Univ, INSERM, INRAE, C2VN, Marseille, France
- Aix Marseille Univ, CNRS, CERIMED, Marseille, France
- Assistance Publique - Hôpitaux de Marseille, Pôle Pharmacie, Radiopharmacie, Marseille, France
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11
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Pan Y, Yang D, Zhou M, Liu Y, Pan J, Wu Y, Huang L, Li H. Advance in topical biomaterials and mechanisms for the intervention of pressure injury. iScience 2023; 26:106956. [PMID: 37378311 PMCID: PMC10291478 DOI: 10.1016/j.isci.2023.106956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023] Open
Abstract
Pressure injuries (PIs) are localized tissue damage resulting from prolonged compression or shear forces on the skin or underlying tissue, or both. Different stages of PIs share common features include intense oxidative stress, abnormal inflammatory response, cell death, and subdued tissue remodeling. Despite various clinical interventions, stage 1 or stage 2 PIs are hard to monitor for the changes of skin or identify from other disease, whereas stage 3 or stage 4 PIs are challenging to heal, painful, expensive to manage, and have a negative impact on quality of life. Here, we review the underlying pathogenesis and the current advances of biochemicals in PIs. We first discuss the crucial events involved in the pathogenesis of PIs and key biochemical pathways lead to wound delay. Then, we examine the recent progress of biomaterials-assisted wound prevention and healing and their prospects.
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Affiliation(s)
- Yingying Pan
- School of Nursing, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Dejun Yang
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325011, China
| | - Min Zhou
- School of Nursing, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Yong Liu
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325011, China
- Joint Research Centre on Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo, Zhejiang 315700, China
| | - Jiandan Pan
- The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Yunlong Wu
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325011, China
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Lijiang Huang
- Joint Research Centre on Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo, Zhejiang 315700, China
| | - Huaqiong Li
- Joint Research Centre on Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo, Zhejiang 315700, China
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12
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Oran NT, Alan N, Akokay P, Büyükçoban S, Uğur Ergür B. The healing effect of topical tea tree oil on pressure ulcers in a rat model. J Wound Care 2023; 32:xiv-xxi. [PMID: 36930536 DOI: 10.12968/jowc.2023.32.sup3a.xiv] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Objective: The effects of topical tea tree oil (TTO) on the healing of pressure ulcers (PUs) in an animal model was evaluated. Method: To induce PUs, ischaemia-reperfusion cycles were performed by the external application of magnetic plates, with an ischaemic period of eight hours and a reperfusion period of 16 hours. Male and female Wistar rats were divided into three equally sized groups (n=20): one group received topical glycerin twice daily, another group received topical 10% (volume/volume (v/v)) TTO in glycerin twice daily; and the remaining group was untreated. The animals were assessed after one, four, seven and 14 cycles of ischaemia-reperfusion by thermal camera imaging, and then euthanised and sampled to investigate the degree of inflammation, collagen synthesis and apoptosis in the PUs. Results: Although topical glycerin alone suppressed local inflammation and apoptosis, this suppressive effect was accentuated at all timepoints by the application of topical TTO + glycerin. Similarly, an increase in collagen synthesis was observed in the glycerin group and this was accentuated by TTO at all timepoints. Parallel to the histological findings, the local temperature had decreased significantly on days 4 and 7 for both treatment groups (glycerin and TTO+glycerin). Conclusion: In this study, treatment with 10% (v/v) TTO in glycerin effectively suppressed skin inflammation and apoptosis, while it increased collagen synthesis during PU formation.
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Affiliation(s)
| | - Nurten Alan
- Dokuz Eylul University, Faculty of Nursing, Izmir, Turkey
| | - Pinar Akokay
- Kavram Vocational School, Medical Laboratory Section, Izmir, Turkey
| | - Sibel Büyükçoban
- Department of Anesthesiology and Reanimation, Dokuz Eylül University Faculty of Medicine, Izmir, Turkey
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13
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Comparative Study of Elabela and Apelin on Apelin Receptor Activation Through β-Arrestin Recruitment. Mol Biotechnol 2023; 65:394-400. [PMID: 35960440 PMCID: PMC9935735 DOI: 10.1007/s12033-022-00529-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 06/23/2022] [Indexed: 10/15/2022]
Abstract
Apelin receptor (APJ) ligands elabela (ELA) and apelin have divergent distributions and function differently in vitro and in vivo. Whether differences exist in their capacity of recruitment of β-arrestins (ARRBs) to APJ remains unknown. The aim of the current study was to investigate the different effects of ELA and apelin on the interaction between APJ and ARRBs in live cells by NanoBiT®. NanoBiT® system is a new technology for studying protein-protein interaction in real-time in live cells, based on the emission of luminescence when two split components of NanoLuc luciferase, large Bit (LgBit) and small Bit (SmBit), complement each other to form an enzymatically active entity. We tagged the APJ and ARRBs with LgBit or SmBit and then evaluated their interactions in transiently transfected HEK293T cells, and determined the signal strength yielded as a result of the interaction. We also investigated the concentration-dependent response of the APJ-ARRB interaction in response to ELA and apelin. Finally, we assessed the effect of F13A, an APJ antagonist which is structurally very similar to apelin-13, on ELA- and apelin-mediated APJ-ARRB interactions. The NanoLuc® luciferase signal was highest in the pair of APJ-LgBit with SmBit-ARRB1 or SmBit-ARRB2. NanoLuc® luciferase signal increased in a concentration-dependent manner from 0.1 nM to 10 μM in response to ELA or apelin. Interestingly, ELA elicited weaker APJ-ARRB interaction signals than apelin. Pre-treatment with F13A potently reduced the APJ-ARRB interaction in response to both ELA and apelin. Our results demonstrated that both ELA and apelin promoted the interaction of APJ and ARRBs in a concentration-dependent manner, and ELA is less efficacious than apelin in inducing the recruitment of ARRBs to APJ, providing a biased functional aspect of ELA vs. apelin at the receptor signaling level. Additionally, ELA and apelin may share the same binding site(s) or pocket(s) at the APJ level.
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14
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Chen B, Wu J, Hu S, Liu Q, Yang H, You Y. Apelin-13 Improves Cognitive Impairment and Repairs Hippocampal Neuronal Damage by Activating PGC-1α/PPARγ Signaling. Neurochem Res 2022; 48:1504-1515. [PMID: 36512295 DOI: 10.1007/s11064-022-03844-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/30/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
Alzheimer's disease (AD) is a complex neurodegenerative disease that is prevalent around the world. Both Apelin-13 and proliferator-activated receptor-γ (PPARγ)/PPARγ co-activator 1α (PGC-1α) are regarded as candidate targets for treating AD. The investigation examined whether Apelin-13 exerts neuroprotective effects via PGC-1α/PPARγ signaling. In this study, Apelin-13 improved cognitive deficits in AD mice, while SR-18,292 (a PGC-1α inhibitor) interfered with the therapeutic effects of Apelin-13. Mechanistically, Apelin-13, PGC-1α and PPARγ were decreased in AD mice and oxygen-glucose deprivation (OGD)-induced neuronal cells. Apelin-13 bound to PGC-1α and negatively regulated the expression of PGC-1α and PPARγ. In turn, PGC-1α accelerated the accumulation of Apelin-13 and PPARγ. Additionally, neuronal apoptosis was inhibited, and the abundance of apoptosis-related proteins (Bax, Bcl-2, and cleaved caspase 3) was induced. The content of reactive oxygen species (ROS), malondialdehyde (MDA) and superoxide dismutase (SOD) fluctuated. The level of inflammatory factors (interleukin-6, IL-6, IL-10, tumor necrosis factor-α, TNF-α) was regulated. In short, Apelin-13 exerted anti-apoptosis, anti-oxidant stress and anti-inflammatory effects. Interestingly, PGC-1α silencing promoted neuronal apoptosis, oxidant stress and inflammation, and overexpression of PGC-1α exhibited the opposite. More importantly, inhibition of PGC-1α attenuated Apelin-13-enhanced cognitive impairment and neuronal damage. Therefore, our findings suggested that Apelin-13 exerted neuroprotective effects in part via the PGC-1α/PPARγ pathway.
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Affiliation(s)
- Bin Chen
- Department of Neurology, the Second Affiliated Hospital of Hainan Medical University, 570216, Haikou, China.,Hainan Medical University, 571199, Haikou, China.,Key Laboratory of Brain Science Research & Transformation In Tropical Environment of Hainan Province, 571199, Haikou, China.,International Center for Aging and Cancer (ICAC), 571199, Haikou, China
| | - Jingwei Wu
- Department of Radiology, the Second Affiliated Hospital of Hainan Medical University, 570216, Haikou, China
| | - Sheng Hu
- Department of Neurology, the Second Affiliated Hospital of Hainan Medical University, 570216, Haikou, China.,Hainan Medical University, 571199, Haikou, China
| | - Qingli Liu
- Department of Neurology, the Second Affiliated Hospital of Hainan Medical University, 570216, Haikou, China.,Hainan Medical University, 571199, Haikou, China
| | - Hui Yang
- Department of Neurology, the Second Affiliated Hospital of Hainan Medical University, 570216, Haikou, China.,Hainan Medical University, 571199, Haikou, China
| | - Yong You
- Department of Neurology, the Second Affiliated Hospital of Hainan Medical University, 570216, Haikou, China. .,Hainan Medical University, 571199, Haikou, China. .,Key Laboratory of Brain Science Research & Transformation In Tropical Environment of Hainan Province, 571199, Haikou, China. .,International Center for Aging and Cancer (ICAC), 571199, Haikou, China.
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15
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Liu X, Tian S, Xu S, Lu W, Zhong C, Long Y, Ma Y, Yang K, Zhang L, Yang J. A pressure-resistant zwitterionic skin sensor for domestic real-time monitoring and pro-healing of pressure injury. Biosens Bioelectron 2022; 214:114528. [PMID: 35816848 DOI: 10.1016/j.bios.2022.114528] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 06/08/2022] [Accepted: 06/29/2022] [Indexed: 11/15/2022]
Abstract
Pressure injury (PI) is a hard-to-heal wound to patients with the limited mobility, especially paralyzed or elderly persons. These patients also commonly suffer from sensation loss or dementia that is unable to indicate symptoms in time, resulting in missing the "golden period" for treatment. Therefore, it is highly required to domestic continously real-time monitoring as well as promoting wound healing of PI. However, no existing device has realized these functions for PI. Herein, we prepare a zwitterionic skin sensor that enables pro-healing as well as domestic real-time monitoring the multi-indicators of PI. To apply for a PI dressing that requires to tolerate patient body weight, organosilicon nanoparticles (OSNPs) are designed as crosslinks in the zwitterionic conductive hydrogel (CH-OSNP), which exhibits pressure-resistant properties (99.81% compression to recovery) as well as anti-bacterial adhesion. Moreover, the CH-OSNP-based skin sensor is developed, and the resultant sensor can be sensitive to stress stimuli even under a long-term constant heavy load, which stimulates the pressure of a PI person lying down. In vivo results show that this sensor can not only promote PI healing, but also continuously monitor and distinguish multiple information, such as exudate, swelling, and infection, to prevent PI from being worsen. This work provides a domestic feasible device to cure and monitor the PI of patients.
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Affiliation(s)
- Xinmeng Liu
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Shu Tian
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Sijia Xu
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Wenyi Lu
- Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou City, Shandong Province, 256606, China
| | - Cheng Zhong
- Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou City, Shandong Province, 256606, China
| | - You Long
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Yiming Ma
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Kai Yang
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Lei Zhang
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China
| | - Jing Yang
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Frontier Technology Research Institute, Tianjin University, Tianjin, 301700, China.
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16
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Turner CT, Pawluk M, Bolsoni J, Zeglinski MR, Shen Y, Zhao H, Ponomarev T, Richardson KC, West CR, Papp A, Granville DJ. Sulfaphenazole reduces thermal and pressure injury severity through rapid restoration of tissue perfusion. Sci Rep 2022; 12:12622. [PMID: 35871073 PMCID: PMC9308818 DOI: 10.1038/s41598-022-16512-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 07/11/2022] [Indexed: 11/20/2022] Open
Abstract
Pressure injuries, also known as pressure ulcers, are regions of localized damage to the skin and/or underlying tissue. Repeated rounds of ischemia-reperfusion (I/R) have a major causative role for tissue damage in pressure injury. Ischemia prevents oxygen/nutrient supply, and restoration of blood flow induces a burst of reactive oxygen species that damages blood vessels, surrounding tissues and can halt blood flow return. Minimizing the consequences of repeated I/R is expected to provide a protective effect against pressure injury. Sulfaphenazole (SP), an off patent sulfonamide antibiotic, is a potent CYP 2C6 and CYP 2C9 inhibitor, functioning to decrease post-ischemic vascular dysfunction and increase blood flow. The therapeutic effect of SP on pressure injury was therefore investigated in apolipoprotein E knockout mice, a model of aging susceptible to ischemic injury, which were subjected to repeated rounds of I/R-induced skin injury. SP reduced overall severity, improved wound closure and increased wound tensile strength compared to vehicle-treated controls. Saliently, SP restored tissue perfusion in and around the wound rapidly to pre-injury levels, decreased tissue hypoxia, and reduced both inflammation and fibrosis. SP also demonstrated bactericidal activity through enhanced M1 macrophage activity. The efficacy of SP in reducing thermal injury severity was also demonstrated. SP is therefore a potential therapeutic option for pressure injury and other ischemic skin injuries.
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Affiliation(s)
- Christopher T. Turner
- grid.17091.3e0000 0001 2288 9830International Collaboration on Repair Discoveries (ICORD) Centre, Blusson Spinal Cord Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Rm 4470, 818 West 10th Ave., Vancouver, BC V5Z 1M9 Canada ,grid.17091.3e0000 0001 2288 9830Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC Canada
| | - Megan Pawluk
- grid.17091.3e0000 0001 2288 9830International Collaboration on Repair Discoveries (ICORD) Centre, Blusson Spinal Cord Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Rm 4470, 818 West 10th Ave., Vancouver, BC V5Z 1M9 Canada ,grid.17091.3e0000 0001 2288 9830Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC Canada
| | - Juliana Bolsoni
- grid.17091.3e0000 0001 2288 9830International Collaboration on Repair Discoveries (ICORD) Centre, Blusson Spinal Cord Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Rm 4470, 818 West 10th Ave., Vancouver, BC V5Z 1M9 Canada ,grid.17091.3e0000 0001 2288 9830Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC Canada
| | - Matthew R. Zeglinski
- grid.17091.3e0000 0001 2288 9830International Collaboration on Repair Discoveries (ICORD) Centre, Blusson Spinal Cord Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Rm 4470, 818 West 10th Ave., Vancouver, BC V5Z 1M9 Canada ,grid.17091.3e0000 0001 2288 9830Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC Canada
| | - Yue Shen
- grid.17091.3e0000 0001 2288 9830International Collaboration on Repair Discoveries (ICORD) Centre, Blusson Spinal Cord Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Rm 4470, 818 West 10th Ave., Vancouver, BC V5Z 1M9 Canada ,grid.17091.3e0000 0001 2288 9830Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC Canada
| | - Hongyan Zhao
- grid.17091.3e0000 0001 2288 9830International Collaboration on Repair Discoveries (ICORD) Centre, Blusson Spinal Cord Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Rm 4470, 818 West 10th Ave., Vancouver, BC V5Z 1M9 Canada ,grid.17091.3e0000 0001 2288 9830Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC Canada
| | - Tatjana Ponomarev
- grid.17091.3e0000 0001 2288 9830Centre for Heart Lung Innovation, St. Paul’s Hospital, University of British Columbia, Vancouver, BC Canada
| | - Katlyn C. Richardson
- grid.17091.3e0000 0001 2288 9830International Collaboration on Repair Discoveries (ICORD) Centre, Blusson Spinal Cord Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Rm 4470, 818 West 10th Ave., Vancouver, BC V5Z 1M9 Canada ,grid.17091.3e0000 0001 2288 9830Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC Canada
| | - Christopher R. West
- grid.17091.3e0000 0001 2288 9830International Collaboration on Repair Discoveries (ICORD) Centre, Blusson Spinal Cord Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Rm 4470, 818 West 10th Ave., Vancouver, BC V5Z 1M9 Canada ,grid.17091.3e0000 0001 2288 9830Department of Cell and Physiological Sciences, University of British Columbia, Vancouver, BC Canada
| | - Anthony Papp
- grid.17091.3e0000 0001 2288 9830Department of Surgery, University of British Columbia, Vancouver, BC Canada
| | - David J. Granville
- grid.17091.3e0000 0001 2288 9830International Collaboration on Repair Discoveries (ICORD) Centre, Blusson Spinal Cord Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Rm 4470, 818 West 10th Ave., Vancouver, BC V5Z 1M9 Canada ,grid.17091.3e0000 0001 2288 9830Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC Canada ,grid.417243.70000 0004 0384 4428British Columbia Professional Firefighters’ Burn and Wound Healing Laboratory, Vancouver Coastal Health Research Institute, Vancouver, BC Canada
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17
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Milk fat-globule epidermal growth factor 8: A potential Regulator of Cutaneous Wound Healing. Mol Biol Rep 2022; 49:8883-8893. [PMID: 35581508 DOI: 10.1007/s11033-022-07365-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/02/2022] [Accepted: 03/11/2022] [Indexed: 10/18/2022]
Abstract
Destroying the integrity of the skin may causes disability and even death from injury or illness. Wound healing is a core mechanism to maintain skin barrier function. Milk fat-globule epidermal growth factor 8 (MFG-E8) is a key factor in wound healing and is involved in regulating blood coagulation, mediating macrophage uptake of apoptotic cells, shifting macrophages from an inflammatory to an anti-inflammatory phenotype, promoting angiogenesis, enhancing vascular endothelial growth factor (VEGF) signaling, and assisting wound tissue perfusion. However, these abilities are dysregulated in pathological conditions, such as glucose disorders and ischemic injury. Restricted application of exogenous MFG-E8 can restore function and play a beneficial role in cutaneous wound healing.
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18
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Tran K, Sainsily X, Côté J, Coquerel D, Couvineau P, Saibi S, Haroune L, Besserer-Offroy É, Flynn-Robitaille J, Resua Rojas M, Murza A, Longpré JM, Auger-Messier M, Lesur O, Bouvier M, Marsault É, Boudreault PL, Sarret P. Size-Reduced Macrocyclic Analogues of [Pyr 1]-apelin-13 Showing Negative Gα 12 Bias Still Produce Prolonged Cardiac Effects. J Med Chem 2022; 65:531-551. [PMID: 34982553 DOI: 10.1021/acs.jmedchem.1c01708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We previously reported a series of macrocyclic analogues of [Pyr1]-apelin-13 (Ape13) with increased plasma stability and potent APJ agonist properties. Based on the most promising compound in this series, we synthesized and then evaluated novel macrocyclic compounds of Ape13 to identify agonists with specific pharmacological profiles. These efforts led to the development of analogues 39 and 40, which possess reduced molecular weight (MW 1020 Da vs Ape13, 1534 Da). Interestingly, compound 39 (Ki 0.6 nM), which does not activate the Gα12 signaling pathway while maintaining potency and efficacy similar to Ape13 to activate Gαi1 (EC50 0.8 nM) and β-arrestin2 recruitment (EC50 31 nM), still exerts cardiac actions. In addition, analogue 40 (Ki 5.6 nM), exhibiting a favorable Gα12-biased signaling and an increased in vivo half-life (t1/2 3.7 h vs <1 min of Ape13), produces a sustained cardiac response up to 6 h after a single subcutaneous bolus injection.
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Affiliation(s)
- Kien Tran
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Xavier Sainsily
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Jérôme Côté
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - David Coquerel
- Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Département de Médecine, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Pierre Couvineau
- Institut de Recherche en Immunologie et en Cancérologie (IRIC), Université de Montréal, Montreal H3T 1J4, Québec, Canada
| | - Sabrina Saibi
- Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Lounès Haroune
- Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Élie Besserer-Offroy
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at the University of California at Los Angeles, Los Angeles, California 90095, United States
| | | | - Martin Resua Rojas
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Alexandre Murza
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Jean-Michel Longpré
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Mannix Auger-Messier
- Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Département de Médecine, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Olivier Lesur
- Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Département de Médecine, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Michel Bouvier
- Institut de Recherche en Immunologie et en Cancérologie (IRIC), Université de Montréal, Montreal H3T 1J4, Québec, Canada
| | - Éric Marsault
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Pierre-Luc Boudreault
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Philippe Sarret
- Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.,Institut de Pharmacologie de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
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19
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Zhou H, Liu B, Liu Y, Huang Q, Yan W. Ultrasonic Intelligent Diagnosis of Papillary Thyroid Carcinoma Based on Machine Learning. JOURNAL OF HEALTHCARE ENGINEERING 2022; 2022:6428796. [PMID: 35047154 PMCID: PMC8763541 DOI: 10.1155/2022/6428796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/03/2021] [Accepted: 12/11/2021] [Indexed: 11/17/2022]
Abstract
Thyroid diseases are divided into papillary carcinoma and nodular diseases, which are very harmful to the human body. Ultrasound is a common diagnostic method for thyroid diseases. In the process of diagnosis, doctors need to observe the characteristics of ultrasound images, combined with professional knowledge and clinical experience, to give the disease situation of patients. However, different doctors have different clinical experience and professional backgrounds, and the diagnosis results lack objectivity and consistency, so an intelligent diagnosis technology for thyroid diseases based on the ultrasound image is needed in clinic, which can give objective and reliable diagnosis opinions on thyroid diseases by extracting the texture, shape, and other information of the image and assist doctors in clinical diagnosis. This paper mainly studies the intelligent ultrasonic diagnosis of papillary thyroid cancer based on machine learning, compares the ultrasonic characteristics of PTMC diagnosed by using the new ultrasound technology (CEUS and UE), and summarizes the differential diagnosis effect and clinical application value of the two technology methods for PTMC. In this paper, machine learning, diffuse thyroid image features, and RBM learning methods are used to study the ultrasonic intelligent diagnosis of papillary thyroid cancer based on machine learning. At the same time, the new contrast-enhanced ultrasound (CEUS) technology and ultrasound elastography (UE) technology are used to obtain the experimental phenomena in the experiment of ultrasonic intelligent diagnosis of papillary thyroid cancer. The results showed that 90% of the cases were diagnosed by contrast-enhanced ultrasound and confirmed by postoperative pathology. CEUS and UE have reliable practical value in the diagnosis of PTMC, and the combined application of CEUS and UE can improve the sensitivity and accuracy of PTMC diagnosis.
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Affiliation(s)
- Heng Zhou
- Ultrasound Department, Hubei Provincial Hospital of TCM, Wuhan 430061, China
| | - Bin Liu
- Network and Computing Center, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Yang Liu
- Ultrasound Department, Hubei Provincial Hospital of TCM, Wuhan 430061, China
| | - Qunan Huang
- Department of Ultrasound Diagnosis, Central Theater General Hospital of the Chinese People's Liberation Army, Wuhan 430000, China
| | - Wei Yan
- Ultrasound Department, Hubei Provincial Hospital of TCM, Wuhan 430061, China
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20
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Yao B, Wang H, Shao M, Chen J, Wei G. Evaluation System of Smart Logistics Comprehensive Management Based on Hospital Data Fusion Technology. JOURNAL OF HEALTHCARE ENGINEERING 2022; 2022:1490874. [PMID: 35035810 PMCID: PMC8759850 DOI: 10.1155/2022/1490874] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/14/2021] [Accepted: 11/18/2021] [Indexed: 12/18/2022]
Abstract
With the acceleration of the informatization process, but because of the late start of the informatization construction of logistics management, the current digital system construction of logistics management has not been popularized, and the intelligent logistics integrated management evaluation system is also extremely lacking. In order to solve the lack of existing intelligent logistics comprehensive management evaluation system, this paper introduces the research of intelligent logistics comprehensive management evaluation system based on hospital data fusion technology. This paper analyzes and utilizes the Kalman filter and adaptive weighted data fusion technology in data fusion technology and then analyzes the evaluation index and system design principles of the intelligent logistics comprehensive management evaluation system and then designs the application layer from the application layer. Design the application layer from the application layer. Then design the framework of the intelligent logistics comprehensive management evaluation system at the network layer and the data layer. The system is finally tested, and the test results show that the evaluation accuracy of the system reaches 80%.
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Affiliation(s)
- Biwen Yao
- Stomatological Hospital Affiliated to Zhejiang University School of Medicine, Hangzhou 310006, China
| | - Huiming Wang
- Stomatological Hospital Affiliated to Zhejiang University School of Medicine, Hangzhou 310006, China
| | - Mingliang Shao
- Stomatological Hospital Affiliated to Zhejiang University School of Medicine, Hangzhou 310006, China
| | - Jian Chen
- Stomatological Hospital Affiliated to Zhejiang University School of Medicine, Hangzhou 310006, China
| | - Guo Wei
- Stomatological Hospital Affiliated to Zhejiang University School of Medicine, Hangzhou 310006, China
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21
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Yao J, Zhao J, Chen T, Zeng X. Prevention Effects of Chain Management on Pressure Ulcers of Hospitalized Patients. JOURNAL OF HEALTHCARE ENGINEERING 2021; 2021:6368189. [PMID: 34931138 PMCID: PMC8684506 DOI: 10.1155/2021/6368189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/12/2021] [Accepted: 11/19/2021] [Indexed: 11/24/2022]
Abstract
The study focused on the preventive effects of the chain management model on pressure ulcers in the operating room. Sqoop big data collection module is used to collect patient information from various hospital information systems in a distributed manner. The data were from the clinical data center of the Zhongshan Hospital Xiamen University General Hospital, and 268 patients were selected as the research subjects. A chain management model is constructed, concerning the preventive measures, the management of each link, the perioperative pressure ulcer management, and the reporting of pressure ulcers. Then, the two groups were compared for the SAS and SDS scores before and after nursing, the pressure ulcer sites, pressure ulcer reporting rate, pressure ulcer staging, and nursing satisfaction. The results show that it is not that more collection modules will lead to better cluster performance and that the execution delay is caused by MapReduce requiring the JAVA virtual machine, and after reaching a certain point, the increase in the number of tasks will slow down the process, and as data size increases, DataNote has an expanded capability to analyze data. After nursing treatment, the SAS and SDS scores of the two groups of patients were significantly lower than before treatment (P < 0.05). The pressure ulcers were mainly distributed in the forehead, mandible, cheeks, front chest, and knees in the two groups, and the difference between the two groups was statistically significant (P < 0.05). The total satisfaction of the observation group was 93.28%, and the total satisfaction of the control group was 92.54%. The patients' satisfaction with the chain management model was higher than that of conventional nursing.
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Affiliation(s)
- Jiao Yao
- Zhongshan Hospital Xiamen University, Xiamen 361004, China
| | - Jie Zhao
- The First Affiliated Hospital of Xiamen University, Xiamen 361001, China
| | - Tao Chen
- Zhongshan Hospital Xiamen University, Xiamen 361004, China
| | - Xuehui Zeng
- Zhongshan Hospital Xiamen University, Xiamen 361004, China
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22
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Latest Innovations and Nanotechnologies with Curcumin as a Nature-Inspired Photosensitizer Applied in the Photodynamic Therapy of Cancer. Pharmaceutics 2021; 13:pharmaceutics13101562. [PMID: 34683855 PMCID: PMC8539945 DOI: 10.3390/pharmaceutics13101562] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 09/15/2021] [Accepted: 09/22/2021] [Indexed: 12/27/2022] Open
Abstract
In the context of the high incidence of cancer worldwide, state-of-the-art photodynamic therapy (PDT) has entered as a usual protocol of attempting to eradicate cancer as a minimally invasive procedure, along with pharmacological resources and radiation therapy. The photosensitizer (PS) excited at certain wavelengths of the applied light source, in the presence of oxygen releases several free radicals and various oxidation products with high cytotoxic potential, which will lead to cell death in irradiated cancerous tissues. Current research focuses on the potential of natural products as a superior generation of photosensitizers, which through the latest nanotechnologies target tumors better, are less toxic to neighboring tissues, but at the same time, have improved light absorption for the more aggressive and widespread forms of cancer. Curcumin incorporated into nanotechnologies has a higher intracellular absorption, a higher targeting rate, increased toxicity to tumor cells, accelerates the activity of caspases and DNA cleavage, decreases the mitochondrial activity of cancer cells, decreases their viability and proliferation, decreases angiogenesis, and finally induces apoptosis. It reduces the size of the primary tumor, reverses multidrug resistance in chemotherapy and decreases resistance to radiation therapy in neoplasms. Current research has shown that the use of PDT and nanoformulations of curcumin has a modulating effect on ROS generation, so light or laser irradiation will lead to excessive ROS growth, while nanocurcumin will reduce the activation of ROS-producing enzymes or will determine the quick removal of ROS, seemingly opposite but synergistic phenomena by inducing neoplasm apoptosis, but at the same time, accelerating the repair of nearby tissue. The latest curcumin nanoformulations have a huge potential to optimize PDT, to overcome major side effects, resistance to chemotherapy, relapses and metastases. All the studies reviewed and presented revealed great potential for the applicability of nanoformulations of curcumin and PDT in cancer therapy.
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23
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Gefen A, Brienza DM, Cuddigan J, Haesler E, Kottner J. Our contemporary understanding of the aetiology of pressure ulcers/pressure injuries. Int Wound J 2021; 19:692-704. [PMID: 34382331 PMCID: PMC8874092 DOI: 10.1111/iwj.13667] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 07/02/2021] [Accepted: 07/25/2021] [Indexed: 12/25/2022] Open
Abstract
In 2019, the third and updated edition of the Clinical Practice Guideline (CPG) on Prevention and Treatment of Pressure Ulcers/Injuries has been published. In addition to this most up‐to‐date evidence‐based guidance for clinicians, related topics such as pressure ulcers (PUs)/pressure injuries (PIs) aetiology, classification, and future research needs were considered by the teams of experts. To elaborate on these topics, this is the third paper of a series of the CPG articles, which summarises the latest understanding of the aetiology of PUs/PIs with a special focus on the effects of soft tissue deformation. Sustained deformations of soft tissues cause initial cell death and tissue damage that ultimately may result in the formation of PUs/PIs. High tissue deformations result in cell damage on a microscopic level within just a few minutes, although it may take hours of sustained loading for the damage to become clinically visible. Superficial skin damage seems to be primarily caused by excessive shear strain/stress exposures, deeper PUs/PIs predominantly result from high pressures in combination with shear at the surface over bony prominences, or under stiff medical devices. Therefore, primary PU/PI prevention should aim for minimising deformations by either reducing the peak strain/stress values in tissues or decreasing the exposure time.
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Affiliation(s)
- Amit Gefen
- The Herbert J. Berman Chair in Vascular Bioengineering, Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
| | - David M Brienza
- Departments of Rehabilitation Science and Technology & Bioengineering and the McGowan Institute of Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Janet Cuddigan
- College of Nursing, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Emily Haesler
- School of Nursing, Midwifery and Paramedicine, Curtin University, Perth, Australia.,Australian Centre for Evidence Based Aged Care, School of Nursing and Midwifery, LaTrobe University, Melbourne, Victoria, Australia.,Australian National University Medical School, Academic Unit of General Practice, Australian National University, Canberra, ACT, Australia
| | - Jan Kottner
- Charité Center 1 for Health and Human Sciences, Charité-Universitätsmedizin Berlin, Berlin, Germany
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24
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Ebrahiminaseri A, Sadeghizadeh M, Moshaii A, Asgaritarghi G, Safari Z. Combination treatment of dendrosomal nanocurcumin and low-level laser therapy develops proliferation and migration of mouse embryonic fibroblasts and alter TGF-β, VEGF, TNF-α and IL-6 expressions involved in wound healing process. PLoS One 2021; 16:e0247098. [PMID: 33956815 PMCID: PMC8101758 DOI: 10.1371/journal.pone.0247098] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 02/01/2021] [Indexed: 12/24/2022] Open
Abstract
INTRODUCTION Pressure ulcer (PU) is known as the third most costly disorder usually caused by prolonged pressure and stagnation in various parts of the body. Although several therapeutic approaches are employing, obstacles in appropriate healing for skin lesions still exist which necessitates new practical alternative or adjunctive treatments. Low level laser therapy (LLLT) as one of the mentioned new strategies have gained attention. Besides, curcumin is an herbal medicine extracted from turmeric with anti-inflammatory and antioxidative properties with promising beneficial therapeutic effects in wound healing. Employing dendrosomal nanoparticles, we overcome the hydrophobicity of curcumin in the present study. We hypothesized that combination treatment of DNC+LLLT (450 nm) simultaneously may promote the wound healing process. MATERIAL AND METHODS MTT assay, PI staining followed by flowcytometry, scratch assay and intracellular ROS measurement were used to investigate the effects caused by DNC and LLLT (450 nm) alone and in combination, on proliferation, cell cycle, migration and oxidative stress mouse embryonic fibroblast cells, respectively. The levels of growth factors and pro-inflammatory cytokines were evaluated by qRT-PCR and ELISA. RESULTS Our results indicated that combination exposure with DNC and LLLT leads to increased proliferation and migration of MEFs as well as being more efficient in significantly upregulating growth factors (TGF-β, VEGF) and decline in inflammatory cytokines (TNF-α, IL-6). Moreover, findings of this research provide persuasive support for the notion that DNC could reduce the LLLT-induced enhancement in intracellular ROS in mouse embryonic fibroblasts. CONCLUSION Concurrent exposure to anti-oxidant concentrations of DNC and LLLT enriched S phase entry and therefor increased proliferation as well as migration on MEFs through regulating the expression levels growth factors and shortening the inflammatory phase by modulating of cytokines. It should be noted that DNC were able to reduce the laser-induced oxidative stress, during wound healing, representing an informative accompaniment with LLLT.
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Affiliation(s)
- Afsaneh Ebrahiminaseri
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Majid Sadeghizadeh
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ahmad Moshaii
- Department of Physics, Tarbiat Modares University, Tehran, Iran
| | - Golareh Asgaritarghi
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Zohreh Safari
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
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25
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Relationship between Apelin/APJ Signaling, Oxidative Stress, and Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021. [DOI: 10.1155/2021/8866725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Apelin, a peptide hormone, is an endogenous ligand for G protein-coupled receptor and has been shown to be widely expressed in human and animal tissues, such as the central nervous system and adipose tissue. Recent studies indicate that the apelin/APJ system is involved in the regulation of multiple physiological and pathological processes, and it is associated with cardiovascular diseases, metabolic disorders, neurological diseases, ischemia-reperfusion injury, aging, eclampsia, deafness, and tumors. The occurrence and development of these diseases are closely related to the local inflammatory response. Oxidative stress is that the balance between oxidation and antioxidant is broken, and reactive oxygen species are produced in large quantities, causing cell or molecular damage, which leads to vascular damage and a series of inflammatory reactions. Hence, this article reviewed recent advances in the relationship between apelin/APJ and oxidative stress, and inflammation-related diseases, and highlights them as potential therapeutic targets for oxidative stress-related inflammatory diseases.
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26
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Inoue Y, Uchiyama A, Sekiguchi A, Yamazaki S, Fujiwara C, Yokoyama Y, Ogino S, Torii R, Hosoi M, Akai R, Iwawaki T, Ishikawa O, Motegi S. Protective effect of dimethyl fumarate for the development of pressure ulcers after cutaneous ischemia‐reperfusion injury. Wound Repair Regen 2020; 28:600-608. [DOI: 10.1111/wrr.12824] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 12/29/2022]
Affiliation(s)
- Yuta Inoue
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| | - Akihiko Uchiyama
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| | - Akiko Sekiguchi
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| | - Sahori Yamazaki
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| | - Chisako Fujiwara
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| | - Yoko Yokoyama
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| | - Sachiko Ogino
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| | - Ryoko Torii
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| | - Mari Hosoi
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| | - Ryoko Akai
- Division of Cell Medicine, Department of Life Science Medical Research Institute, Kanazawa Medical University Ishikawa Japan
| | - Takao Iwawaki
- Division of Cell Medicine, Department of Life Science Medical Research Institute, Kanazawa Medical University Ishikawa Japan
| | - Osamu Ishikawa
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
| | - Sei‐ichiro Motegi
- Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
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