美国的 Doccol 线拴是脑缺血 MCAO 模型稳定的保证,可将脑梗塞体积标准差减少至 5%,并避免蛛网膜下腔出血, 不需要激光多普勒检测血流也能获得极为稳定的结果。 Doccol 线拴是国际脑缺血研究中应用最多的线拴,是 Nature,Stroke,J Neurosci 等顶级杂志报 道最多的线拴。同时, 每只鼠 MCAO 的线栓成本最低仅为 10-20 元(可重复使用型号,视
重复使用次数决定)。我们推荐使用下表的型号,推荐型号备有现货。
Doccol 推荐型号规格及价格
种属 | 体重(g) | 推荐型号/每管数量 | 线号 | 外径(mm) | 包被(mm) |
小鼠 | 15-20 | 701956PK5Re /5 根 | 7-0 | 0.19 | 5-6 |
20-25 | 602156PK5Re /5 根 | 6-0 | 0.21 | 5-6 | |
25-30 | 602356PK5Re /5 根 | 6-0 | 0.23 | 5-6 | |
30-35 | 602356PK5Re /5 根 | 6-0 | 0.23 | 5-6 | |
大鼠 | <200 | 503356PK5Re /5 根 | 5-0 | 0.33 | 5-6 |
200-250 | 403556PK5Re /5 根 | 4-0 | 0.35 | 5-6 | |
250-280 | 403756PK5Re /5 根 | 4-0 | 0.37 | 5-6 | |
280-330 | 403956PK5Re /5 根 | 4-0 | 0.39 | 5-6 | |
330-400 | 404156PK5Re /5 根 | 4-0 | 0.41 | 5-6 | |
>400 | 404356PK5Re /5 根 | 4-0 | 0.43 | 5-6 |
注:(1)型号的命名根据线号、外径、硅胶包被长度、一个管中的线拴数量、是否可重复 使用确定。如“701956PK5Re”为 7 号线, 0.19mm 外径,硅胶包被长度 5-6mm ,PK5 一个 管中的数量是 5 根,Re 可重复使用。(2) 在美国,绝大多数的实验者都选用上表推荐的可 重复使 用型 号, 即所谓“ starter kits ”。 Doccol 线栓所有型号列表及 选择 原则 见http://minxuetech.com。(3) 一次性线栓(名称中不带 Re 字样) 每管 10根,价格与可重复型号相同。(4) Re型号重复使用的次数,每位实验者差别很大, 2- 10 次不等Doccol MCAO 线拴可以将脑梗塞体积标准差减少至 5%
成功的 MCAO 模型的脑血流在插入线拴时会有断崖式下降;在拔出线拴后,激光多普 勒检测的血流会很快恢复(图 A)。 采用硬质尼龙鱼线线拴,极易戳破血管,造成蛛网膜下 腔出血(Subarachnoid hemorrhage,图 B)。手术过程中血管如果被线拴戳破,脑血流不会有断崖式下降, 而是缓慢下降; 在拔出线拴后,脑血流也不会恢复。 造成脑梗塞体积变异 的原因还有,不完全的梗塞血管或线拴移位造成的血流下降程度不均一及提前灌注。 因此, 线栓的质地是 MCAO 模型稳定的关键。
对于 MCAO 模型来说,主要有两种线拴,无包被的火焰熔烫圆头线拴及硅胶包被线拴。 研究表明(Tsuchiya et al . 2003),无包被的圆头线拴在 MCAO 实验过程中可能导致高达 40% 的蛛网膜下腔出血,而其标准差可能比平均值的 50%还要大。另一项技术文章表明 (Shimamura et al. 2006a) ,硅胶包被线拴要远好于无包被的圆头线拴, 其结果更为稳定, 即使对于没有经验的实验者来说也是如此。而多聚赖氨酸包被的线拴只能增加死亡率,不能 减少梗赛体积的变异程度(Huang et al. 1998)。
Doccol MCAO 线拴全部为硅胶包被,圆润、柔软、包被均匀,即使在没有激光多普 勒 实 时 检 测 的 情 况 , 也 不 会 将 血 管 戳 破 。 使 用 自 制 的 硅 胶 包 被 的 线 拴 , 大 鼠 (Schmid-Elsaesser et al. 1998)及小鼠(Shah et al. 2006)的脑梗塞体积的标准差均在 30% 左右。而使用 Doccol MCAO 线拴可以得到更好的结果。对于大鼠 MCAO 模型来说,使用 Doccol MCAO 线拴得到的结果的标准差可达 10%-20% (Ruscher et al.2012;Ishizaka et al.2013;Sakata et al.2012;Candelario-Jalil et al. 2008;Khan et al. 2006;Liu et al. 2006; Shimamura et al. 2006b;Solaroglu et al . 2006;Tsubokawa et al. 2007;Tsubokawa et al. 2006a;Tsubokawa et al. 2006b)。对于小鼠来说,使用 Doccol MCAO 线拴得到的结果的 标准差可达 5%- 10%(Chen et al.2014; Bae et al.2013; Jin et al.2011; Gu et al .2012; Kleinschnitz et al. 2007; Maysami et al. 2008; Pignataro et al. 2007b; Pignataro et al. 2007c)。
References
1. Bae ON, Serfozo K, Baek SH, et al . (2013) Stroke 44(1):205-12.
2. Candelario-Jalil E, Munoz E, Fiebich BL. (2008) BMC Neurosci 9:19
3. Chen HZ, Guo S, Li ZZ, et al. (2014) J Neurosci .34(36):11897 -912.
4. Huang J, Kim LJ, Poisik A, et al. (1998) J Stroke Cerebrovasc Dis 7:296-301
5. Gu L, Xiong X, Zhang H, et al . (2012) Stroke 43:1941 -1946.
6. Ishizaka S, Horie N, Satoh K, et al. (2013) Stroke 44:720-726.
7. Jin R, Song Z, Yu S, et al . (2011) Stroke 42(7):2033-44.
8. Khan M, Jatana M, Elango C, et al . (2006) Nitric Oxide 15:114-124
9. Kleinschnitz C, Pozgajova M, Pham M, et al . (2007) Circulation 115:2323-2330
10. Koizumi J, Yoshida Y, Nakazawa T, et al . (1986) Jpn J Stroke 8:1-8
11. Liu S, Liu W, Ding W.(2006) J Cereb Blood Flow Metab 26:1274- 1284
12. Longa EZ, Weinstein PR, Carlson S, et al. (1989) Stroke 20:84-91
13. Maysami S, Lan JQ, Minami M, et al . (2008) J Cereb Blood Flow Metab 28:1104- 1113
14. Pignataro G, Simon RP, Boison D . (2007a) J Cereb Blood Flow Metab 27:1-5
15. Pignataro G, Simon RP, Xiong ZG. (2007b) Brain 130:151-158
16. Pignataro G, Studer FE, Wilz A, et al . (2007c) J Cereb Blood Flow Metab 27:919 -927
17. Ruscher K, Kuric E, Wieloch T, et al . (2012) Stroke 43:507 -513.
18. Sakata H, et al . (2012) J Neurosci . 32(10):3462–3473.
19 Schmid-Elsaesser R, Zausinger S, Hungerhuber E, et al . (1998) Stroke 29:2162 -2170
20. Shah ZA, Namiranian K, Klaus J, et al. (2006) J Stroke Cerebrovasc Dis 15:133- 138
21. Shimamura N, Matchett G, Tsubokawa T, et al . (2006a) J Neurosci Methods 156:161- 165
22. Shimamura N, Matchett G, Yatsushige H, et al. (2006b) Stroke 37:1902-1909
23. Solaroglu I, Tsubokawa T, Cahill J, et al . (2006) Neuroscience 143:965 -974
24. Tsubokawa T, Jadhav V, Solaroglu I, et al . (2007) Stroke 38:1057 -1062
25. Tsubokawa T, Solaroglu I, Yatsushige H, et al. (2006a) Stroke 37:1888- 1894
26. Tsubokawa T, Yamaguchi-Okada M, Calvert JW, et al. (2006b) J Neurosci Res 84:832-840
27. Tsuchiya D, Hong S, Kayama T, et al . (2003) Brain Res 970:131 -139
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Doccol MCAO 线拴所有型号
(非推荐型号需美国厂家订做,从美国发货,价格需来电咨询,货期 15-20 天)
Suture size | Diameter (mm) | Coating length (mm) | ||||||
1.5-2 | 2-3 | 3-4 | 4-5 | 5-6 | 5-7 | 9-10 | ||
7-0 | 0.15 | 701512PK5Re | 701523PK5Re | 701534PK5Re | 701545PK5Re | 701556PK5Re | 7015PK5Re | 7015910PK5Re |
8-0 | 0.17 | 801712PK5 | 801723PK5 | 801734PK5 | 801745PK5 | 801756PK5 | ||
7-0 | 0.17 | 701712PK5Re | 701723PK5Re | 701734PK5Re | 701745PK5Re | 701756PK5Re | 7017PK5Re | 7017910PK5Re |
8-0 | 0.18 | 801812PK5 | 801823PK5 | 801834PK5 | 801845PK5 | 801856PK5 | ||
7-0 | 0.18 | 701812PK5Re | 701823PK5Re | 701834PK5Re | 701845PK5Re | 701856PK5Re | 7018PK5Re | 7018910PK5Re |
8-0 | 0.19 | 801912PK5 | 801923PK5 | 801934PK5 | 801945PK5 | 801956PK5 | ||
7-0 | 0.19 | 701912PK5Re | 701923PK5Re | 701934PK5Re | 701945PK5Re | 701956PK5Re | 7019PK5Re | 7019910PK5Re |
8-0 | 0.20 | 802012PK5 | 802023PK5 | 802034PK5 | 802045PK5 | 802056PK5 | ||
7-0 | 0.20 | 702012PK5Re | 702023PK5Re | 702034PK5Re | 702045PK5Re | 702056PK5Re | 7020PK5Re | 7020910PK5Re |
8-0 | 0.21 | 802112PK5 | 802123PK5 | 802134PK5 | 802145PK5 | 802156PK5 | ||
7-0 | 0.21 | 702112PK5Re | 702123PK5Re | 702134PK5Re | 702145PK5Re | 702156PK5Re | 7021PK5Re | 7021910PK5Re |
6-0 | 0.21 | 602112PK10 | 602123PK10 | 602134PK10 | 602145PK10 | 602156PK10 | 6021PK10 | 6021910PK10 |
6-0 | 0.21 | 602112PK5Re | 602123PK5Re | 602134PK5Re | 602145PK5Re | 602156PK5Re | 6021PK5Re | 6021910PK5Re |
8-0 | 0.22 | 802212PK5 | 802223PK5 | 802234PK5 | 802245PK5 | 802256PK5 | ||
7-0 | 0.22 | 702212PK5Re | 702223PK5Re | 702234PK5Re | 702245PK5Re | 702256PK5Re | 7022PK5Re | 7022910PK5Re |
8-0 | 0.23 | 802312PK5 | 802323PK5 | 802334PK5 | 802345PK5 | 802356PK5 | ||
7-0 | 0.23 | 702312PK5Re | 702323PK5Re | 702334PK5Re | 702345PK5Re | 702356PK5Re | 7023PK5Re | 7023910PK5Re |
6-0 | 0.23 | 602312PK10 | 602323PK10 | 602334PK10 | 602345PK10 | 602356PK10 | 6023PK10 | 6023910PK10 |
6-0 | 0.23 | 602312PK5Re | 602323PK5Re | 602334PK5Re | 602345PK5Re | 602356PK5Re | 6023PK5Re | 6023910PK5Re |
7-0 | 0.25 | 702512PK5Re | 702523PK5Re | 702534PK5Re | 702545PK5Re | 702556PK5Re | 7025PK5Re | 7025910PK5Re |
6-0 | 0.25 | 602512PK10 | 602523PK10 | 602534PK10 | 602545PK10 | 602556PK10 | 6025PK10 | 6025910PK10 |
6-0 | 0.25 | 602512PK5Re | 602523PK5Re | 602534PK5Re | 602545PK5Re | 602556PK5Re | 6025PK5Re | 6025910PK5Re |
6-0 | 0.27 | 602712PK10 | 602723PK10 | 602734PK10 | 602745PK10 | 602756PK10 | 6027PK10 | 6027910PK10 |
6-0 | 0.27 | 602712PK5Re | 602723PK5Re | 602734PK5Re | 602745PK5Re | 602756PK5Re | 6027PK5Re | 6027910PK5Re |
5-0 | 0.27 | 502712PK10 | 502723PK10 | 502734PK10 | 502745PK10 | 502756PK10 | 5027PK10 | 5027910PK10 |
5-0 | 0.27 | 502712PK5Re | 502723PK5Re | 502734PK5Re | 502745PK5Re | 502756PK5Re | 5027PK5Re | 5027910PK5Re |
5-0 | 0.29 | 502912PK10 | 502923PK10 | 502934PK10 | 502945PK10 | 502956PK10 | 5029PK10 | 5029910PK10 |
5-0 | 0.29 | 502912PK5Re | 502923PK5Re | 502934PK5Re | 502945PK5Re | 502956PK5Re | 5029PK5Re | 5029910PK5Re |
5-0 | 0.31 | 503112PK10 | 503123PK10 | 503134PK10 | 503145PK10 | 503156PK10 | 5031PK10 | 5031910PK10 |
5-0 | 0.31 | 503112PK5Re | 503123PK5Re | 503134PK5Re | 503145PK5Re | 503156PK5Re | 5031PK5Re | 5031910PK5Re |
5-0 | 0.33 | 503312PK10 | 503323PK10 | 503334PK10 | 503345PK10 | 503356PK10 | 5033PK10 | 5033910PK10 |
5-0 | 0.33 | 503312PK5Re | 503323PK5Re | 503334PK5Re | 503345PK5Re | 503356PK5Re | 5033PK5Re | 5033910PK5Re |
4-0 | 0.33 | 403312PK10 | 403323PK10 | 403334PK10 | 403345PK10 | 403356PK10 | 4033PK10 | 4033910PK10 |
5-0 | 0.35 | 503512PK10 | 503523PK10 | 503534PK10 | 503545PK10 | 503556PK10 | 5035PK10 | 5035910PK10 |
5-0 | 0.35 | 503512PK5Re | 503523PK5Re | 503534PK5Re | 503545PK5Re | 503556PK5Re | 5035PK5Re | 5035910PK5Re |
4-0 | 0.35 | 403512PK10 | 403523PK10 | 403534PK10 | 403545PK10 | 403556PK10 | 4035PK10 | 4035910PK10 |
4-0 | 0.35 | 403512PK5Re | 403523PK5Re | 403534PK5Re | 403355PK5Re | 403556PK5Re | 4035PK5Re | 4035910PK5Re |
5-0 | 0.37 | 503712PK10 | 503723PK10 | 503734PK10 | 503745PK10 | 503756PK10 | 5037PK10 | 5037910PK10 |
5-0 | 0.37 | 503712PK5Re | 503723PK5Re | 503734PK5Re | 503745PK5Re | 503756PK5Re | 5037PK5Re | 5037910PK5Re |
4-0 | 0.37 | 403712PK10 | 403723PK10 | 403734PK10 | 403745PK10 | 403756PK10 | 4037PK10 | 4037910PK10 |
4-0 | 0.37 | 403712PK5Re | 403723PK5Re | 403734PK5Re | 403745PK5Re | 403756PK5Re | 4037PK5Re | 4037910PK5Re |
5-0 | 0.39 | 503912PK10 | 503923PK10 | 503934PK10 | 503945PK10 | 503956PK10 | 5039PK10 | 5039910PK10 |
5-0 | 0.39 | 503912PK5Re | 503923PK5Re | 503934PK5Re | 503945PK5Re | 503956PK5Re | 5039PK5Re | 5039910PK5Re |
4-0 | 0.39 | 403912PK10 | 403923PK10 | 403934PK10 | 403945PK10 | 403956PK10 | 4039PK10 | 4039910PK10 |
4-0 | 0.39 | 403912PK5Re | 403923PK5Re | 403934PK5Re | 403945PK5Re | 403956PK5Re | 4039PK5Re | 4039910PK5Re |
5-0 | 0.41 | 504112PK10 | 504123PK10 | 504134PK10 | 504145PK10 | 504156PK10 | 5041PK10 | 5041910PK10 |
5-0 | 0.41 | 504112PK5Re | 504123PK5Re | 504134PK5Re | 504145PK5Re | 504156PK5Re | 5041PK5Re | 5041910PK5Re |
4-0 | 0.41 | 404112PK10 | 404123PK10 | 404134PK10 | 404145PK10 | 404156PK10 | 4041PK10 | 4041910PK10 |
4-0 | 0.41 | 404112PK5Re | 404123PK5Re | 404134PK5Re | 404145PK5Re | 404156PK5Re | 4041PK5Re | 4041910PK5Re |
4-0 | 0.43 | 404312PK10 | 404323PK10 | 404334PK10 | 404345PK10 | 404356PK10 | 4043PK10 | 4043910PK10 |
4-0 | 0.43 | 404312PK5Re | 404323PK5Re | 404334PK5Re | 404345PK5Re | 404356PK5Re | 4043PK5Re | 4043910PK5Re |
4-0 | 0.45 | 404512PK10 | 404523PK10 | 404534PK10 | 404545PK10 | 404556PK10 | 4045PK10 | |
4-0 | 0.45 | 404512PK5Re | 404523PK5Re | 404534PK5Re | 404545PK5Re | 404556PK5Re | 4045PK5Re | |
4-0 | 0.47 | 404712PK10 | 404723PK10 | 404734PK10 | 404745PK10 | 404756PK10 | 4047PK10 | |
4-0 | 0.47 | 404712PK5Re | 404723PK5Re | 404734PK5Re | 404745PK5Re | 404756PK5Re | 4047PK5Re | |
3-0 | 0.54 | 305412PK10 | 305423PK10 | 305434PK10 | 305445PK10 | 305456PK10 | 3054PK10 |
|
3-0 | 0.58 | 305812PK10 | 305823PK10 |
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