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低能量強脈沖光影響C57BL/6小鼠毛發(fā)生長的實驗研究

2020-09-02 06:39:16江樂文丁偉佳江敏君
中外醫(yī)學研究 2020年18期

江樂文 丁偉佳 江敏君

【摘要】 目的:觀察低能量強脈沖光(IPL)對C57BL/6小鼠毛發(fā)生長及生長周期的影響。方法:制作小鼠休止期脫毛模型,將35只小鼠隨機分為陽性對照組、空白對照組、IPL高能量組、IPL中能量組、IPL低能量組,對IPL高能量組、IPL中能量組、IPL低能量組脫毛區(qū)進行IPL照射,比較各組小鼠毛發(fā)生長情況。實驗14、21 d,取各組鼠背脫毛區(qū)皮膚行HE染色及毛囊計數,觀察IPL照射對毛囊生長的影響。結果:IPL低能量組毛發(fā)長度顯著長于其他組,每倍視野毛囊數為(68.9±5.4)個,明顯多于其他組,差異均有統(tǒng)計學意義(P<0.05)。結論:低能量IPL照射可能是促進毛發(fā)生長的一種有效治療手段。

【關鍵詞】 強脈沖光 休止期 毛發(fā)生長 生長周期 毛囊

doi:10.14033/j.cnki.cfmr.2020.18.005 文獻標識碼 A 文章編號 1674-6805(2020)18-00-03

Effects of Low Energy Intense Pulse Light on Hair Growth in C57BL/6 Mice/JIANG Lewen, DING Weijia, JIANG Minjun. //Chinese and Foreign Medical Research, 2020, 18(18): -12

[Abstract] Objective: To observe the effects of low energy intense pulse light (IPL) on hair growth and growth cycle in C57BL/6 mice. Method: The depilation model of telogen was made, thirty-five mice were randomly divided into the positive control group, the blank control group, the IPL high energy group, the IPL medium energy group and the IPL low energy group. IPL irradiation was performed on the depilation area of the IPL high energy group, the IPL medium energy group and IPL low energy group. Hair growth of mice in each group was compared. On day 14 and 21, HE staining and hair follicles counting were performed on the depilated area of each group, and the effect of IPL irradiation on hair follicles growth was observed. Result: The length of the hair in IPL low energy group was significantly longer than those of the other groups, and the number of follicles per visual field was (68.9±5.4), which was significantly more than those of the other groups, and the differences were statistically significant (P<0.05). Conclusion: Low intensity IPL irradiation may be an effective treatment for hair growth.

[Key words] Intense pulse light Telogen Hair growth Growth cycle Hair follicles

First-authors address: Shenzhen Longgang Centra Hospital, Shenzhen 518116, China

光電治療在皮膚美容中的應用越來越廣泛。強脈沖光(intense pulse light,IPL)已被廣泛用于脫毛治療中,主要原理為選擇性光熱效應作用于富含黑色素顆粒細胞的毛囊、毛干,導致毛囊組織破壞,從而達到脫毛效果。反常多毛現象(paradoxical hypertrichosis)是強脈沖光治療后的副作用,于2002年首先被發(fā)現并被證實[1]。反常多毛現象表現為在脫毛區(qū)域或鄰近區(qū)域出現毛發(fā)的反常增多增粗,因此存在潛在治療脫發(fā)的可能。本課題將在C57BL/6小鼠動物實驗中驗證低能量強脈沖光對毛發(fā)生長的影響,可能有助于開發(fā)一種操作便捷、費用低廉的脫發(fā)治療新手段。

1 材料與方法

1.1 一般材料

1.1.1 實驗動物 SPF級雄性C57BL/6小鼠,周齡6~7周,體重15~20 g,購自南方醫(yī)科大學實驗動物中心。

1.1.2 實驗試劑 5%米諾地爾酊(廈門美商醫(yī)藥有限公司,國藥準字H20103166);硫化鈉、石蠟、甲醛、酒精、二甲苯、伊紅染液、蘇木精染液,均市購。

1.1.3 實驗儀器 強脈沖光治療儀(SOLARI路創(chuàng)麗,韓國)、CMl900切片機、顯微鏡等。

1.2 方法

1.2.1 動物實驗 將小鼠放于溫度為25 ℃,濕度為54%的環(huán)境中適應性喂養(yǎng)2周后,采用電動剃毛器剃除各組小鼠背部毛發(fā),面積約2 cm×3 cm,再用8%硫化鈉脫毛濕布擦拭,保證毛發(fā)脫干凈及皮膚無損傷。采用抽簽法將35只小鼠隨機分為5組,分別為IPL高能量組、IPL中能量組、IPL低能量組、空白對照組和陽性對照組,每組7只,分籠飼養(yǎng)。脫毛次日開始進行實驗干預,各組干預方法:IPL低能量組參數:波長560~

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[6] Willey A,Torrontegui J,Azpiazu J,et al.Hair stimulation following laser and intense pulsed light photo-epilation:review of 543 cases and ways to manage it[J].Lasers in Surgery and Medicine,2007,39(4):297-301.

[7] Van Vlimmeren M A A,Raafs B,Westgate G E,et al.Dose-response of human follicles during laser-based hair removal:Ex vivo photoepilation model with classifification system embracing morphological and histological features[J].Lasers in Surgery & Medicine,2019,51(8):735-741.

[8] Wu Y F,Wang S H,Wu P S,et al.Enhancing hair follicle regeneration by nonablative fractional laser:assessment of irradiation parameters and tissue response[J].Lasers in Surgery and Medicine,2015,47(4):331-341.

[9] Ito M,Yang Z,Andl T,et al.Wnt-dependent de novo hair follicle regeneration in adult mouse skin after wounding[J].Nature,2007,447(7142):316-320.

[10] Jiang S,Zhao L M,Teklemariam T,et al.Small cutaneous wounds induce telogen to anagen transition of murine hair follicle stem cells[J].Journal of Dermatological Science,2010,60(3):143-150.

[11] Bae J M,Jung H M,Goo B,et al.Hair regrowth through wound healing process after ablative fractional laser treatment in a murine model[J].Lasers in Surgery and Medicine,2015,47(5):433-440.

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(收稿日期:2020-03-26) (本文編輯:李盈)

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