Renal cell carcinoma (RCC) is one of the most important urological tumors and is one of the most common cancer diseases worldwide. Unfortunately, the treatment options are very limited due to resistances. Non-invasive...Renal cell carcinoma (RCC) is one of the most important urological tumors and is one of the most common cancer diseases worldwide. Unfortunately, the treatment options are very limited due to resistances. Non-invasive physical plasma (NIPP) is currently becoming a promising and very well tolerated treatment option for cancer. NIPP represents a highly energized gas and induc</span><span style="font-family:Verdana;">es varying antioncogenic cell responses in tumor cells. And also in t</span><span style="font-family:Verdana;">he case of RCC, NIPP treatment has great potential to enhance and supplement existing anticancer treatment options. Outstanding characteristics of NIPP treatment are 1) a precise and local effect on the treated tissue and 2) an almost exclusive effect on treated tumor cells without side effects. This allows </span><span style="font-family:Verdana;">an enormously large therapeutic window and makes the combination o</span><span style="font-family:Verdana;">f NIPP treatment and classical therapy appear particularly promising. In addition to R</span><span style="font-family:Verdana;">CC, plasma oncology offers an extremely innovative physical treatme</span><span style="font-family:Verdana;">nt method for future oncology in general.</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">This brief review article summarizes the current knowledge on the potential use of NIPP in RCC therapy.展开更多
Atmospheric pressure low-temperature plasma is a promising tool in biomedicine applications including blood coagulation,bacterial inactivation,sterilization,and cancer treatment,due to its high chemical activity and l...Atmospheric pressure low-temperature plasma is a promising tool in biomedicine applications including blood coagulation,bacterial inactivation,sterilization,and cancer treatment,due to its high chemical activity and limited thermal damage.It is of great importance to develop portable plasma sources that are safe to human touch and suitable for outdoor and household operation.In this work,a portable and rechargeable low-temperature plasma spark discharge device(130 mm×80 mm×35 mm,300 g)was designed.The discharge frequency and plume length were optimized by the selection of resistance,capacitance,electrode gap,and ground electrode aperture.Results show that the spark plasma plume is generated with a length of 12 mm and a frequency of 10 Hz at a capacitance of 0.33μF.resistance of 1 MΩ,electrode gap of 2 mm,and ground electrode aperture of 1.5 mm.Biological tests indicate that the plasma produced by this device contains abundant reactive species,which can be applied in plasma biomedicine,including daily sterilization and wound healing.展开更多
This paper presents plasma-induced blood coagulation and its pilot application in rat hepatectomy by using a home-made pulsed cold plasma jet. Experiments were conducted on blood coagulation in vitro, the influence of...This paper presents plasma-induced blood coagulation and its pilot application in rat hepatectomy by using a home-made pulsed cold plasma jet. Experiments were conducted on blood coagulation in vitro, the influence of plasma on tissue in vivo, and the pilot application of rat hepatectomy. Experimental results show that the cold plasma can lead to rapid blood coagulation. Compared with the control sample, the plasma-induced agglomerated layer of blood is thicker and denser, and is mostly composed of broken platelets. When the surface of the liver was treated by plasma, the influence of the plasma can penetrate into the liver to a depth of about 500 μm. During the rat hepatectomy, cold plasma was proved to be effective for stanching bleeding on incision. No obvious bleeding was found in the abdominal cavities of all six rats 48 h after the hepatectomy. This implies that cold plasma can be an effective modality to control bleeding during surgical operation.展开更多
Cold atmospheric pressure plasma (CAP) has been expected to be effective for wound healing among plasma medicines and has been attracting attention. The aim of this retrospective clinical study was to evaluate and com...Cold atmospheric pressure plasma (CAP) has been expected to be effective for wound healing among plasma medicines and has been attracting attention. The aim of this retrospective clinical study was to evaluate and compare the effects of CAP on acute wounds created by a fractional CO2 (FXCO2) laser on four treatment groups. Methods: This study was conducted between September 2017 and November 2018. Radiated surface wounds were created using a FXCO2 laser on four identically-sized regions on the medial side of the left forearm of 12 healthy volunteer subjects, for a total of 48 treatment regions. Each region was then randomly assigned to one of four groups: 1) no treatment (control group), 2) irradiated CAP for 60 seconds (plasma group), 3) topical application of ointment containing betamethasone valerate (steroid group), or 4) two to three sprays of basic fibroblast growth factor (bFGF group). The primary outcome of the skin was the change in absolute values of lightness index (L*), redness index (a*I) of L*a*b color space, arithmetical mean roughness (Ra), and mean melanin concentration. The secondary outcome was the clinical condition of the wounds, including inflammation, crust formation, and hyper/hypo-pigmentation on the recovering skin surface relative to the surrounding intact skin. Each item was evaluated at post-treatment 0, 1, 3, 7, 14, 28 days and 1 year. Results: Although no significant difference was observed among all groups, the CAP group exhibited more rapid recovery regarding a*I and Ra. No side-effects were observed in the CAP group. Conclusion: CAP is considered to accelerate healing of irradiated wounds via anti-inflammatory activity. Our study confirmed the effectiveness and safety of CAP which is devoid of side-effects of conventional therapies, and may aid in future development of medical plasma therapies.展开更多
In this study two plasma sources were used for an in vivo treatment of human stratum corneum. The sample preparation was realised with the Cyanoacrylat stripping method, whereby a few layers of corneocytes embedded in...In this study two plasma sources were used for an in vivo treatment of human stratum corneum. The sample preparation was realised with the Cyanoacrylat stripping method, whereby a few layers of corneocytes embedded in the lipid matrix were removed from the skin of healthy volunteers. For the plasma treatment, dielectric barrier discharges with pulse durations in the microsecond as well as in the nanosecond range were applied. A comparison of these sources with respect to their biologically active components including dissipated power, gas and electron temperature, irradiance in the ultraviolet range, ozone and nitric oxide concentration is presented. Furthermore, species generated during plasma treatment on the sample surface like hydrogen peroxide, nitride or nitrate were measured using reflectometry. In addition, safety aspects for both sources were evaluated. Resulting plasma induced changes in the sample composition were investigated through X-ray photoelectron spectroscopy. The main ingredients carbon, oxygen, and nitrogen in addition to minor concentrations of sulphur were considered. A significant influence of the pulse duration on plasma characteristics was shown. A more effective formation of reactive species as well as more intense UV emission for ns-plasma was observed. Based on the determined parameters, both plasma sources are suitable for therapeutic purpose. Furthermore, significant plasma induced changes in the stratum corneum composition were reported, including an increase in nitrogen and oxygen content.展开更多
目的探讨等离子体对Ha Ca T细胞活性、细胞因子表达的影响及作用机制,为其在皮肤创伤愈合的应用提供理论依据。方法 CCK-8法测定不同时间等离子体处理对Ha Ca T细胞活性的影响,流式细胞术检测处理后细胞内活性氧水平改变,并与有NAC存在...目的探讨等离子体对Ha Ca T细胞活性、细胞因子表达的影响及作用机制,为其在皮肤创伤愈合的应用提供理论依据。方法 CCK-8法测定不同时间等离子体处理对Ha Ca T细胞活性的影响,流式细胞术检测处理后细胞内活性氧水平改变,并与有NAC存在条件下的改变进行比较;酶标仪检测处理介质PBS中H2O2浓度;采用ELISA及Realtime PCR方法分析等离子体处理后Ha Ca T生成细胞因子在蛋白和mRNA水平的改变。结果沿面空气等离子体对Ha Ca T细胞具有细胞毒性,呈剂量-时间依赖性。等离子体处理可升高细胞内ROS水平,NAC能够明显抑制等离子体处理引起的Ha Ca T细胞活性下降及细胞内ROS水平的增加。与对照组相比,等离子体照射可在不同程度上引起细胞因子IL-1βmRNA水平的增加,可明显增加IL-6、IL-8、VEGF蛋白及mRNA的水平。结论空气沿面等离子可通过提高细胞内ROS水平发挥细胞毒性作用,其一定程度上的促炎作用及促进生长因子的分泌作用可能在创伤愈合治疗中具有重要意义。展开更多
In this paper,an absorption spectroscopy measurement method was applied on two atmospheric pressure plasma sources to determine their production of nitric oxide.The concentrations are essential for evaluating the plas...In this paper,an absorption spectroscopy measurement method was applied on two atmospheric pressure plasma sources to determine their production of nitric oxide.The concentrations are essential for evaluating the plasma sources based on the principle of the Dielectric Barrier Discharge（DBD）for applications in plasma medicine.The described method is based on a setup with an electrodeless discharge lamp filled with a mixture of oxygen and nitrogen.One of the emitted wavelengths is an important resonance wavelength of nitric oxide（λ = 226.2 nm）.By comparing the absorption behaviour at the minimum and maximum of the spectral absorption cross section of nitric oxide around that wavelength,and measuring the change in intensity by the absorbing plasma,the concentration of nitric oxide inside the plasma can be calculated.The produced nitric oxide concentrations depend on the pulse duration and are in the range of 180 ppm to 1400 ppm,so that a distance of about 10 cm to the respiratory tract is enough to conform to the VDI Guideline 2310.展开更多
文摘Renal cell carcinoma (RCC) is one of the most important urological tumors and is one of the most common cancer diseases worldwide. Unfortunately, the treatment options are very limited due to resistances. Non-invasive physical plasma (NIPP) is currently becoming a promising and very well tolerated treatment option for cancer. NIPP represents a highly energized gas and induc</span><span style="font-family:Verdana;">es varying antioncogenic cell responses in tumor cells. And also in t</span><span style="font-family:Verdana;">he case of RCC, NIPP treatment has great potential to enhance and supplement existing anticancer treatment options. Outstanding characteristics of NIPP treatment are 1) a precise and local effect on the treated tissue and 2) an almost exclusive effect on treated tumor cells without side effects. This allows </span><span style="font-family:Verdana;">an enormously large therapeutic window and makes the combination o</span><span style="font-family:Verdana;">f NIPP treatment and classical therapy appear particularly promising. In addition to R</span><span style="font-family:Verdana;">CC, plasma oncology offers an extremely innovative physical treatme</span><span style="font-family:Verdana;">nt method for future oncology in general.</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">This brief review article summarizes the current knowledge on the potential use of NIPP in RCC therapy.
基金supported by National Natural Science Foundation of China(Nos.51677083 and 51377075)Postgraduate Research and Practice Innovation Program of Jiangsu Province(SJCX18_0340)
文摘Atmospheric pressure low-temperature plasma is a promising tool in biomedicine applications including blood coagulation,bacterial inactivation,sterilization,and cancer treatment,due to its high chemical activity and limited thermal damage.It is of great importance to develop portable plasma sources that are safe to human touch and suitable for outdoor and household operation.In this work,a portable and rechargeable low-temperature plasma spark discharge device(130 mm×80 mm×35 mm,300 g)was designed.The discharge frequency and plume length were optimized by the selection of resistance,capacitance,electrode gap,and ground electrode aperture.Results show that the spark plasma plume is generated with a length of 12 mm and a frequency of 10 Hz at a capacitance of 0.33μF.resistance of 1 MΩ,electrode gap of 2 mm,and ground electrode aperture of 1.5 mm.Biological tests indicate that the plasma produced by this device contains abundant reactive species,which can be applied in plasma biomedicine,including daily sterilization and wound healing.
基金supported by National Natural Science Foundation of China (51377145)the Science and Technology Program of Zhejiang Province (2015F10011 and 2014C33022), China
文摘This paper presents plasma-induced blood coagulation and its pilot application in rat hepatectomy by using a home-made pulsed cold plasma jet. Experiments were conducted on blood coagulation in vitro, the influence of plasma on tissue in vivo, and the pilot application of rat hepatectomy. Experimental results show that the cold plasma can lead to rapid blood coagulation. Compared with the control sample, the plasma-induced agglomerated layer of blood is thicker and denser, and is mostly composed of broken platelets. When the surface of the liver was treated by plasma, the influence of the plasma can penetrate into the liver to a depth of about 500 μm. During the rat hepatectomy, cold plasma was proved to be effective for stanching bleeding on incision. No obvious bleeding was found in the abdominal cavities of all six rats 48 h after the hepatectomy. This implies that cold plasma can be an effective modality to control bleeding during surgical operation.
文摘Cold atmospheric pressure plasma (CAP) has been expected to be effective for wound healing among plasma medicines and has been attracting attention. The aim of this retrospective clinical study was to evaluate and compare the effects of CAP on acute wounds created by a fractional CO2 (FXCO2) laser on four treatment groups. Methods: This study was conducted between September 2017 and November 2018. Radiated surface wounds were created using a FXCO2 laser on four identically-sized regions on the medial side of the left forearm of 12 healthy volunteer subjects, for a total of 48 treatment regions. Each region was then randomly assigned to one of four groups: 1) no treatment (control group), 2) irradiated CAP for 60 seconds (plasma group), 3) topical application of ointment containing betamethasone valerate (steroid group), or 4) two to three sprays of basic fibroblast growth factor (bFGF group). The primary outcome of the skin was the change in absolute values of lightness index (L*), redness index (a*I) of L*a*b color space, arithmetical mean roughness (Ra), and mean melanin concentration. The secondary outcome was the clinical condition of the wounds, including inflammation, crust formation, and hyper/hypo-pigmentation on the recovering skin surface relative to the surrounding intact skin. Each item was evaluated at post-treatment 0, 1, 3, 7, 14, 28 days and 1 year. Results: Although no significant difference was observed among all groups, the CAP group exhibited more rapid recovery regarding a*I and Ra. No side-effects were observed in the CAP group. Conclusion: CAP is considered to accelerate healing of irradiated wounds via anti-inflammatory activity. Our study confirmed the effectiveness and safety of CAP which is devoid of side-effects of conventional therapies, and may aid in future development of medical plasma therapies.
文摘In this study two plasma sources were used for an in vivo treatment of human stratum corneum. The sample preparation was realised with the Cyanoacrylat stripping method, whereby a few layers of corneocytes embedded in the lipid matrix were removed from the skin of healthy volunteers. For the plasma treatment, dielectric barrier discharges with pulse durations in the microsecond as well as in the nanosecond range were applied. A comparison of these sources with respect to their biologically active components including dissipated power, gas and electron temperature, irradiance in the ultraviolet range, ozone and nitric oxide concentration is presented. Furthermore, species generated during plasma treatment on the sample surface like hydrogen peroxide, nitride or nitrate were measured using reflectometry. In addition, safety aspects for both sources were evaluated. Resulting plasma induced changes in the sample composition were investigated through X-ray photoelectron spectroscopy. The main ingredients carbon, oxygen, and nitrogen in addition to minor concentrations of sulphur were considered. A significant influence of the pulse duration on plasma characteristics was shown. A more effective formation of reactive species as well as more intense UV emission for ns-plasma was observed. Based on the determined parameters, both plasma sources are suitable for therapeutic purpose. Furthermore, significant plasma induced changes in the stratum corneum composition were reported, including an increase in nitrogen and oxygen content.
文摘目的探讨等离子体对Ha Ca T细胞活性、细胞因子表达的影响及作用机制,为其在皮肤创伤愈合的应用提供理论依据。方法 CCK-8法测定不同时间等离子体处理对Ha Ca T细胞活性的影响,流式细胞术检测处理后细胞内活性氧水平改变,并与有NAC存在条件下的改变进行比较;酶标仪检测处理介质PBS中H2O2浓度;采用ELISA及Realtime PCR方法分析等离子体处理后Ha Ca T生成细胞因子在蛋白和mRNA水平的改变。结果沿面空气等离子体对Ha Ca T细胞具有细胞毒性,呈剂量-时间依赖性。等离子体处理可升高细胞内ROS水平,NAC能够明显抑制等离子体处理引起的Ha Ca T细胞活性下降及细胞内ROS水平的增加。与对照组相比,等离子体照射可在不同程度上引起细胞因子IL-1βmRNA水平的增加,可明显增加IL-6、IL-8、VEGF蛋白及mRNA的水平。结论空气沿面等离子可通过提高细胞内ROS水平发挥细胞毒性作用,其一定程度上的促炎作用及促进生长因子的分泌作用可能在创伤愈合治疗中具有重要意义。
文摘In this paper,an absorption spectroscopy measurement method was applied on two atmospheric pressure plasma sources to determine their production of nitric oxide.The concentrations are essential for evaluating the plasma sources based on the principle of the Dielectric Barrier Discharge（DBD）for applications in plasma medicine.The described method is based on a setup with an electrodeless discharge lamp filled with a mixture of oxygen and nitrogen.One of the emitted wavelengths is an important resonance wavelength of nitric oxide（λ = 226.2 nm）.By comparing the absorption behaviour at the minimum and maximum of the spectral absorption cross section of nitric oxide around that wavelength,and measuring the change in intensity by the absorbing plasma,the concentration of nitric oxide inside the plasma can be calculated.The produced nitric oxide concentrations depend on the pulse duration and are in the range of 180 ppm to 1400 ppm,so that a distance of about 10 cm to the respiratory tract is enough to conform to the VDI Guideline 2310.
