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Mu L, Sun A, Chen Y, Chen H, Li J, Linghu B, Zhou H, Chi Q, Luan X, Pan Y. Vascular response to the microcirculation in the fingertip by local vibration with varied amplitude. Front Bioeng Biotechnol 2023; 11:1197772. [PMID: 37378046 PMCID: PMC10291088 DOI: 10.3389/fbioe.2023.1197772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
Objectives: We investigated the effect of local vibration intensity on the vascular response to the microcirculation of the finger. Materials and methods: We performed hand-transmitted vibration experiments combined with laser Doppler flowmetry (LDF) to measure the blood perfusion signals of fingertips in the vibrated hand and the contralateral middle finger under the same frequency and different amplitude vibration, and to analyze the changes of microcirculatory blood perfusion levels in the fingers, and to investigate the effects of vibration stimulation on the endothelial, neural and myogenic regulatory frequency ranges of fingertips based on wavelet analysis. Furthermore, the transparent silicone films were fabricated and cultured with vascular endothelial cell (EC), which will undergo the local vibration with varied amplitude. And the expression of inflammatory factors was detected in the ECs. Results: Low-frequency vibration leads to a decreased blood flow in fingertip, and the degree of reduction in fingertip blood flow increases as the amplitude gradually increases, and the period required for blood flow to return to normal level after hand-transmitted vibration gradually increases. The decrease in blood flow is more pronounced in the vibrating hand than in the contralateral hand. In addition, nuclear factor-κB (NF-κB) expression increased significantly with the increase of vibration amplitude. Conclusion: High amplitude vibrations caused the inflammatory reaction of ECs which will lead to the altered endothelial regulatory activity. The endothelial regulatory activity is closely related to the blood perfusion in the microcirculation.
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Affiliation(s)
- Lizhong Mu
- Key Laboratory of Marine Energy Utilization and Energy Conservation, School of Energy and Power, Dalian University of Technology, Dalian, China
- The Combination of Medicine and Engineering of Cardiovascular Fluid Dynamics Key Laboratory of Liaoning Province, Shenyang, China
| | - Aoran Sun
- Key Laboratory of Marine Energy Utilization and Energy Conservation, School of Energy and Power, Dalian University of Technology, Dalian, China
| | - Youqiang Chen
- Key Laboratory of Marine Energy Utilization and Energy Conservation, School of Energy and Power, Dalian University of Technology, Dalian, China
| | - Huimin Chen
- Key Laboratory of Marine Energy Utilization and Energy Conservation, School of Energy and Power, Dalian University of Technology, Dalian, China
| | - Jianda Li
- Key Laboratory of Marine Energy Utilization and Energy Conservation, School of Energy and Power, Dalian University of Technology, Dalian, China
| | - Bingqi Linghu
- Key Laboratory of Marine Energy Utilization and Energy Conservation, School of Energy and Power, Dalian University of Technology, Dalian, China
| | - Hang Zhou
- The Second Hospital Affiliated Dalian Medical University, Dalian, China
| | - Qingzhuo Chi
- Key Laboratory of Marine Energy Utilization and Energy Conservation, School of Energy and Power, Dalian University of Technology, Dalian, China
| | - Xiaofeng Luan
- Department of General Surgery, Central Hopspital of Dalian University of Technology, Dalian, China
| | - Yue Pan
- College of Biomedical Engineering, Dalian University of Technology, Dalian, China
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Roberts RE, Cavalcante-Silva J, Del Rio-Moreno M, Bilgen O, Kineman RD, Koh TJ. Liver insulin-like growth factor-1 mediates effects of low-intensity vibration on wound healing in diabetic mice. J Pathol 2023; 260:97-107. [PMID: 36808624 PMCID: PMC10079632 DOI: 10.1002/path.6068] [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: 12/07/2022] [Revised: 01/20/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023]
Abstract
Chronic wounds in diabetic patients are associated with significant morbidity and mortality; however, few therapies are available to improve healing of diabetic wounds. Our group previously reported that low-intensity vibration (LIV) could improve angiogenesis and wound healing in diabetic mice. The purpose of this study was to begin to elucidate the mechanisms underlying LIV-enhanced healing. We first demonstrate that LIV-enhanced wound healing in db/db mice is associated with increased IGF1 protein levels in liver, blood, and wounds. The increase in insulin-like growth factor (IGF) 1 protein in wounds is associated with increased Igf1 mRNA expression both in liver and wounds, but the increase in protein levels preceded the increase in mRNA expression in wounds. Since our previous study demonstrated that liver was a primary source of IGF1 in skin wounds, we used inducible ablation of IGF1 in the liver of high-fat diet (HFD)-fed mice to determine whether liver IGF1 mediated the effects of LIV on wound healing. We demonstrate that knockdown of IGF1 in liver blunts LIV-induced improvements in wound healing in HFD-fed mice, particularly increased angiogenesis and granulation tissue formation, and inhibits the resolution of inflammation. This and our previous studies indicate that LIV may promote skin wound healing at least in part via crosstalk between the liver and wound. © 2023 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Rita E. Roberts
- Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, IL, USA
- Center for Tissue Repair and Regeneration, University of Illinois at Chicago, Chicago, IL, USA
- Jesse Brown VA Medical Center, Chicago, IL, USA
| | - Jacqueline Cavalcante-Silva
- Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, IL, USA
- Center for Tissue Repair and Regeneration, University of Illinois at Chicago, Chicago, IL, USA
- Jesse Brown VA Medical Center, Chicago, IL, USA
| | - Mercedes Del Rio-Moreno
- Department of Medicine, Section of Endocrinology, Diabetes and Metabolism, University of Illinois at Chicago, Chicago, IL, USA
- Jesse Brown VA Medical Center, Chicago, IL, USA
| | - Onur Bilgen
- Department of Mechanical & Aerospace Engineering, Rutgers University, Piscataway, NJ, USA
| | - Rhonda D. Kineman
- Department of Medicine, Section of Endocrinology, Diabetes and Metabolism, University of Illinois at Chicago, Chicago, IL, USA
- Jesse Brown VA Medical Center, Chicago, IL, USA
| | - Timothy J. Koh
- Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, IL, USA
- Center for Tissue Repair and Regeneration, University of Illinois at Chicago, Chicago, IL, USA
- Jesse Brown VA Medical Center, Chicago, IL, USA
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Zhu X, Zhang K, He L, Liao F, Ren Y, Jan YK. Spectral analysis of blood flow oscillations to assess the plantar skin blood flow regulation in response to preconditioning local vibrations. Biorheology 2021; 58:39-49. [PMID: 33896803 DOI: 10.3233/bir-201011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Local vibration has shown promise in improving skin blood flow and wound healing. However, the underlying mechanism of local vibration as a preconditioning intervention to alter plantar skin blood flow after walking is unclear. OBJECTIVE The objective was to use wavelet analysis of skin blood flow oscillations to investigate the effect of preconditioning local vibration on plantar tissues after walking. METHODS A double-blind, repeated measures design was tested in 10 healthy participants. The protocol included 10-min baseline, 10-min local vibrations (100 Hz or sham), 10-min walking, and 10-min recovery periods. Skin blood flow was measured over the first metatarsal head of the right foot during the baseline and recovery periods. Wavelet amplitudes after walking were expressed as the ratio of the wavelet amplitude before walking. RESULTS The results showed the significant difference in the metabolic (vibration 10.06 ± 1.97, sham 5.78 ± 1.53, p < 0.01) and neurogenic (vibration 7.45 ± 1.54, sham 4.78 ± 1.22, p < 0.01) controls. There were no significant differences in the myogenic, respiratory and cardiac controls between the preconditioning local vibration and sham conditions. CONCLUSIONS Our results showed that preconditioning local vibration altered the normalization rates of plantar skin blood flow after walking by stimulating the metabolic and neurogenic controls.
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Affiliation(s)
- Xiaotong Zhu
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - Keying Zhang
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - Li He
- College of Physical Education and Sports, Beijing Normal University, Beijing, China
| | - Fuyuan Liao
- Department of Biomedical Engineering, Xi'an Technological University, Xi'an, China
| | - Yuanchun Ren
- College of Physical Education and Sports, Beijing Normal University, Beijing, China
| | - Yih-Kuen Jan
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Champaign, IL, USA.,Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, China
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Roberts RE, Bilgen O, Kineman RD, Koh TJ. Parameter-Dependency of Low-Intensity Vibration for Wound Healing in Diabetic Mice. Front Bioeng Biotechnol 2021; 9:654920. [PMID: 33768089 PMCID: PMC7985330 DOI: 10.3389/fbioe.2021.654920] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 02/12/2021] [Indexed: 01/07/2023] Open
Abstract
Chronic wounds in diabetic patients represent an escalating health problem, leading to significant morbidity and mortality. Our group previously reported that whole body low-intensity vibration (LIV) can improve angiogenesis and wound healing in diabetic mice. The purpose of the current study was to determine whether effects of LIV on wound healing are frequency and/or amplitude dependent. Wound healing was assessed in diabetic (db/db) mice exposed to one of four LIV protocols with different combinations of two acceleration magnitudes (0.3 and 0.6 g) and two frequencies (45 and 90 Hz) or in non-vibration sham controls. The low acceleration, low frequency protocol (0.3 g and 45 Hz) was the only one that improved wound healing, increasing angiogenesis and granulation tissue formation, leading to accelerated re-epithelialization and wound closure. Other protocols had little to no impact on healing with some evidence that 0.6 g accelerations negatively affected wound closure. The 0.3 g, 45 Hz protocol also increased levels of insulin-like growth factor-1 and tended to increase levels of vascular endothelial growth factor in wounds, but had no effect on levels of basic fibroblast growth factor or platelet derived growth factor-bb, indicating that this LIV protocol induces specific growth factors during wound healing. Our findings demonstrate parameter-dependent effects of LIV for improving wound healing that can be exploited for future mechanistic and therapeutic studies.
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Affiliation(s)
- Rita E. Roberts
- Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, IL, United States
- Center for Tissue Repair and Regeneration, University of Illinois at Chicago, Chicago, IL, United States
- Jesse Brown VA Medical Center, Chicago, IL, United States
| | - Onur Bilgen
- Department of Mechanical and Aerospace Engineering, Rutgers University, Piscataway, NJ, United States
| | - Rhonda D. Kineman
- Jesse Brown VA Medical Center, Chicago, IL, United States
- Department of Medicine, Section of Endocrinology, Diabetes and Metabolism, University of Illinois at Chicago, Chicago, IL, United States
| | - Timothy J. Koh
- Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, IL, United States
- Center for Tissue Repair and Regeneration, University of Illinois at Chicago, Chicago, IL, United States
- Jesse Brown VA Medical Center, Chicago, IL, United States
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Liao F, Zhang K, Zhou L, Chen Y, Elliott J, Jan YK. Effect of Different Local Vibration Frequencies on the Multiscale Regularity of Plantar Skin Blood Flow. ENTROPY 2020; 22:e22111288. [PMID: 33287056 PMCID: PMC7712514 DOI: 10.3390/e22111288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/02/2020] [Accepted: 11/11/2020] [Indexed: 12/14/2022]
Abstract
Local vibration has shown promise in improving skin blood flow (SBF). However, there is no consensus on the selection of the best vibration frequency. An important reason may be that previous studies utilized time- and frequency-domain parameters to characterize vibration-induced SBF responses. These parameters are unable to characterize the structural features of the SBF response to local vibrations, thus contributing to the inconsistent findings seen in vibration research. The objective of this study was to provide evidence that nonlinear dynamics of SBF responses would be an important aspect for assessing the effect of local vibration on SBF. Local vibrations at 100 Hz, 35 Hz, and 0 Hz (sham vibration) with an amplitude of 1 mm were randomly applied to the right first metatarsal head of 12 healthy participants for 10 min. SBF at the same site was measured for 10 min before and after local vibration. The degree of regularity of SBF was quantified using a multiscale sample entropy algorithm. The results showed that 100 Hz vibration significantly increased multiscale regularity of SBF but 35 Hz and 0 Hz (sham vibration) did not. The significant increase of regularity of SBF after 100 Hz vibration was mainly attributed to increased regularity of SBF oscillations within the frequency interval at 0.0095–0.15 Hz. These findings support the use of multiscale regularity to assess effectiveness of local vibration on improving skin blood flow.
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Affiliation(s)
- Fuyuan Liao
- Department of Biomedical Engineering, Xi’an Technological University, Xi’an 710021, China;
| | - Keying Zhang
- Rehabilitation Engineering Laboratory, Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA; (K.Z.); (L.Z.)
| | - Lingling Zhou
- Rehabilitation Engineering Laboratory, Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA; (K.Z.); (L.Z.)
| | - Yanni Chen
- Department of Pediatrics, Xi’an Jiaotong University Health Science Center, Xi’an 710021, China;
| | - Jeannette Elliott
- Disability Resources and Educational Services, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA;
| | - Yih-Kuen Jan
- Rehabilitation Engineering Laboratory, Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA; (K.Z.); (L.Z.)
- Correspondence: ; Tel.: +1-217-300-7253
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