南昌大学学报(医学版)
南昌大學學報(醫學版)
남창대학학보(의학판)
Acta Academiae Medicinae Jiangxi
2015年
4期
11-14,107
,共5页
周毅%李俊达%林启谋%王兴%李勇%关建华%陈春梅
週毅%李俊達%林啟謀%王興%李勇%關建華%陳春梅
주의%리준체%림계모%왕흥%리용%관건화%진춘매
纳米碳%5-氟嘧啶%乳腺癌%化疗%动物,实验%新西兰白兔
納米碳%5-氟嘧啶%乳腺癌%化療%動物,實驗%新西蘭白兔
납미탄%5-불밀정%유선암%화료%동물,실험%신서란백토
carbon nanoparticle%5-fluorouracil%breast cancer%chemotherapy%animals,laboratory%New Zealand white rabbit
目的:观察纳米碳吸附5-氟嘧啶(5-FU)对新西兰白兔乳腺癌淋巴结转移模型的治疗效果。方法将48只雌性新西兰白兔按随机数字表法分为纳米碳组、静脉组及皮下组,各组各16只。所有动物在乳垫下局部注射VX2肿瘤组织悬液建立乳腺癌动物模型,当腋窝触及直径≥5 mm 肿大淋巴结时进行干预治疗。纳米碳组皮下注射纳米碳-5-FU 混悬液、静脉组经兔耳缘静脉注射5-FU、皮下组经皮下注射5-FU,药物剂量均为25 mg·kg-1。治疗15 min 后各组处死一半动物,治疗5 d 后处死余下动物。采用超高效液相色谱法检测各组动物血浆、瘤体组织及淋巴结转移灶中的5-FU 浓度;常规 HE 染色切片观察组织中肿瘤细胞坏死程度(ND);脱氧核糖核苷酸末端转移酶介导的 dTUP 末端标记技术(TUNEL)检测肿瘤细胞凋亡情况。结果治疗15 min 后,纳米碳组、静脉组及皮下组血浆中5-FU 浓度分别为(11.48±2.40)、(30.12±2.94)及(24.98±3.05)μg·mL-1;瘤体中的5-FU 浓度分别为(1.17±0.70)、(3.77±0.93)及(4.36±0.91)μg·g-1;淋巴结转移灶中的5-FU 浓度分别为(25.70±1.39)、(1.61±0.83)及(2.69±0.74)μg·g-1。纳米碳组淋巴结转移灶中5-FU 浓度明显高于静脉组和皮下组,血浆及瘤体中的5-FU 浓度明显低于静脉组和皮下组(均 P <0.01);静脉组血浆5-FU 浓度高于皮下组(P <0.05),瘤体及淋巴结转移灶中5-FU 浓度比较差异无统计学意义(P >0.05)。治疗5 d 后,纳米碳组血浆及淋巴结转移灶中5-FU 浓度分别为(0.35±0.13)μg·mL-1、(3.56±0.34)μg·g-1,瘤体中未检测到5-FU;静脉组及皮下组的血浆、瘤体及淋巴结转移灶中均未检测到5-FU。纳米碳组瘤体组织 ND、细胞凋亡指数(AI)均明显低于静脉组及皮下组,淋巴结转移灶的 ND、细胞 AI 明显高于静脉组及皮下组(P <0.05或 P <0.01)。静脉组与皮下组瘤体组织及淋巴结转移灶中肿瘤细胞的 ND、细胞 AI 比较差异均无统计学意义(均 P >0.05)。结论纳米碳能提高肿瘤组织中5-FU 的药物浓度,增强药物对淋巴结转移灶的治疗效果。
目的:觀察納米碳吸附5-氟嘧啶(5-FU)對新西蘭白兔乳腺癌淋巴結轉移模型的治療效果。方法將48隻雌性新西蘭白兔按隨機數字錶法分為納米碳組、靜脈組及皮下組,各組各16隻。所有動物在乳墊下跼部註射VX2腫瘤組織懸液建立乳腺癌動物模型,噹腋窩觸及直徑≥5 mm 腫大淋巴結時進行榦預治療。納米碳組皮下註射納米碳-5-FU 混懸液、靜脈組經兔耳緣靜脈註射5-FU、皮下組經皮下註射5-FU,藥物劑量均為25 mg·kg-1。治療15 min 後各組處死一半動物,治療5 d 後處死餘下動物。採用超高效液相色譜法檢測各組動物血漿、瘤體組織及淋巴結轉移竈中的5-FU 濃度;常規 HE 染色切片觀察組織中腫瘤細胞壞死程度(ND);脫氧覈糖覈苷痠末耑轉移酶介導的 dTUP 末耑標記技術(TUNEL)檢測腫瘤細胞凋亡情況。結果治療15 min 後,納米碳組、靜脈組及皮下組血漿中5-FU 濃度分彆為(11.48±2.40)、(30.12±2.94)及(24.98±3.05)μg·mL-1;瘤體中的5-FU 濃度分彆為(1.17±0.70)、(3.77±0.93)及(4.36±0.91)μg·g-1;淋巴結轉移竈中的5-FU 濃度分彆為(25.70±1.39)、(1.61±0.83)及(2.69±0.74)μg·g-1。納米碳組淋巴結轉移竈中5-FU 濃度明顯高于靜脈組和皮下組,血漿及瘤體中的5-FU 濃度明顯低于靜脈組和皮下組(均 P <0.01);靜脈組血漿5-FU 濃度高于皮下組(P <0.05),瘤體及淋巴結轉移竈中5-FU 濃度比較差異無統計學意義(P >0.05)。治療5 d 後,納米碳組血漿及淋巴結轉移竈中5-FU 濃度分彆為(0.35±0.13)μg·mL-1、(3.56±0.34)μg·g-1,瘤體中未檢測到5-FU;靜脈組及皮下組的血漿、瘤體及淋巴結轉移竈中均未檢測到5-FU。納米碳組瘤體組織 ND、細胞凋亡指數(AI)均明顯低于靜脈組及皮下組,淋巴結轉移竈的 ND、細胞 AI 明顯高于靜脈組及皮下組(P <0.05或 P <0.01)。靜脈組與皮下組瘤體組織及淋巴結轉移竈中腫瘤細胞的 ND、細胞 AI 比較差異均無統計學意義(均 P >0.05)。結論納米碳能提高腫瘤組織中5-FU 的藥物濃度,增彊藥物對淋巴結轉移竈的治療效果。
목적:관찰납미탄흡부5-불밀정(5-FU)대신서란백토유선암림파결전이모형적치료효과。방법장48지자성신서란백토안수궤수자표법분위납미탄조、정맥조급피하조,각조각16지。소유동물재유점하국부주사VX2종류조직현액건립유선암동물모형,당액와촉급직경≥5 mm 종대림파결시진행간예치료。납미탄조피하주사납미탄-5-FU 혼현액、정맥조경토이연정맥주사5-FU、피하조경피하주사5-FU,약물제량균위25 mg·kg-1。치료15 min 후각조처사일반동물,치료5 d 후처사여하동물。채용초고효액상색보법검측각조동물혈장、류체조직급림파결전이조중적5-FU 농도;상규 HE 염색절편관찰조직중종류세포배사정도(ND);탈양핵당핵감산말단전이매개도적 dTUP 말단표기기술(TUNEL)검측종류세포조망정황。결과치료15 min 후,납미탄조、정맥조급피하조혈장중5-FU 농도분별위(11.48±2.40)、(30.12±2.94)급(24.98±3.05)μg·mL-1;류체중적5-FU 농도분별위(1.17±0.70)、(3.77±0.93)급(4.36±0.91)μg·g-1;림파결전이조중적5-FU 농도분별위(25.70±1.39)、(1.61±0.83)급(2.69±0.74)μg·g-1。납미탄조림파결전이조중5-FU 농도명현고우정맥조화피하조,혈장급류체중적5-FU 농도명현저우정맥조화피하조(균 P <0.01);정맥조혈장5-FU 농도고우피하조(P <0.05),류체급림파결전이조중5-FU 농도비교차이무통계학의의(P >0.05)。치료5 d 후,납미탄조혈장급림파결전이조중5-FU 농도분별위(0.35±0.13)μg·mL-1、(3.56±0.34)μg·g-1,류체중미검측도5-FU;정맥조급피하조적혈장、류체급림파결전이조중균미검측도5-FU。납미탄조류체조직 ND、세포조망지수(AI)균명현저우정맥조급피하조,림파결전이조적 ND、세포 AI 명현고우정맥조급피하조(P <0.05혹 P <0.01)。정맥조여피하조류체조직급림파결전이조중종류세포적 ND、세포 AI 비교차이균무통계학의의(균 P >0.05)。결론납미탄능제고종류조직중5-FU 적약물농도,증강약물대림파결전이조적치료효과。
ABSTRACT:Objective To observe the therapeutic efficacy of 5-fluorouracil(5-FU)-loaded car-bon nanoparticles in a New Zealand white rabbit model of breast cancer with axillary lymph node metastasis.Methods Forty-eight female New Zealand white rabbits were injected locally with VX2 tumor tissue suspension to establish the breast cancer model.When axillary lymph nodes reached ≥5 mm in diameter,these rabbits with breast cancer were treated with subcutaneous 5-FU-loaded carbon nanoparticle injection(CN group,n=16),intravenous 5-FU injection(IV group, n=16),or subcutaneous 5-FU injection(HI group,n=16)at a dose of 25 mg·kg-1 .Eight rabbits in each group were sacrificed after treatment for 15 minutes and 5 days,respectively.The concen-trations of 5-FU in plasma,tumor and metastatic lymph nodes were detected by ultra-high per-formance liquid chromatography.The necrosis degree(ND)of tumor cells was observed by HE staining.The apoptosis index(AI)of tumor cells was determined by TUNEL assay.Results Af-ter treatment for 15 minutes,the concentrations of 5-FU in plasma,tumor and metastatic lymph nodes were,respectively,(11.48±2.40)μg·mL-1 ,(1.17±0.70)μg·g-1 and(25.70±1.39)μg·g-1 in CN group,(30.12±2.94)μg·mL-1 ,(3.77±0.93)μg·g-1 and(1.61±0.83)μg·g-1 in IV group,and(24.98±3.05)μg·mL-1 ,(4.36 ±0.91)μg·g-1 and(2.69 ±0.74)μg·g-1 in HI group.Compared with IV group and HI group,the concentrations of 5-FU increased in metastatic lymph nodes but decreased in plasma and tumor in CN group(P < 0.01).Compared with HI group,plasma concentrations of 5-FU increased in IV group(P <0.05).No significant differences in the concentrations of 5-FU in tumor and metastatic lymph nodes were found between HI group and IV group(P >0.05).After treatment for 5 days,the concentrations of 5-FU were,respective-ly,(0.35±0.13)μg·mL-1 and(3.56±0.34)μg·g-1 in plasma and metastatic lymph nodes in CN group.No 5-FU was detected in the tumor in CN group,as well as in the plasma,tumor and metastatic lymph nodes in IV group and HI group.Compared with IV group and HI group,the ND and AI of tumor cells decreased in tumor tissue but increased in metastatic lymph nodes in CN group(P <0.05 or P <0.01).No significant differences in the ND and AI of tumor cells in the tumor and metastatic lymph nodes were found between IV group and HI group(P >0.05).Con-clusion Carbon nanoparticles can increase the concentrations of 5-FU in the tumor and improves the efficacy of drug treatment in axillary metastatic lymph nodes.