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Efficacy of the long-acting octreotide formulation in patients with thyroid-stimulating hormone-secreting pituitary adenomas after incomplete surgery and octreotide treatment failure 被引量:3
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作者 ZHANG Chun-fang LIANG Dan ZHONG Li-yong 《Chinese Medical Journal》 SCIE CAS CSCD 2012年第15期2758-2763,共6页
Background Little information about the current management of patients with thyroid-stimulating hormone (TSH)-secreting pituitary adenomas or about the usefulness of the somatostatin analogue octreotide was containe... Background Little information about the current management of patients with thyroid-stimulating hormone (TSH)-secreting pituitary adenomas or about the usefulness of the somatostatin analogue octreotide was contained in the literature. This study aimed to report the efficacy and safety of the long-acting octreotide formulation in patients with TSH-secreting pituitary adenomas after incomplete surgery and octreotide treatment failure. Methods Fifteen patients with TSH-secreting pituitary adenomas (8 men and 7 women), who previously underwent incomplete surgical resection and/or adjuvant radiotherapy (n=12) and failure of octreotide treatment (n=15), followed between 2007 and 2010 in Beijing Tiantan Hospital were included in this study. All patients received 1- to 2-months of the long-acting octreotide formulation treatment after the above combination of treatment. Paired samples t-test was used to analysis the variables. Results After two-month duration of the long-acting octreotide formulation treatment, the mean serum free or unbound thyroxine (FT4) ((16.02±1.72) pmol/L) and free triiodothyronine (FT3) ((2.87±0.43) pmol/L) levels of 15 patients significantly decreased compared with those after octreotide-treatment (FT4, (35.36±7.42) pmol/L, P 〈0.001; FT3, (17.85±7.22) pmol/L, P 〈0.001). Mean TSH levels stayed in the normal range after the long-acting octreotide formulation treatment ((0.72±0.21) mUlL) and were significantly lower than the pretreatment value ((5.27±1.04) mUlL, P 〈0.001), post-surgery value ((3.37±0.31) mU/L, P 〈0.001) and post-octreotide-treatment value ((4.52±0.41) mU/L, P 〈0.001). In these patients with TSH-secreting pituitary adenomas there was no evidence of tachyphylaxis. Conclusion The long-acting octreotide formulation may be a useful and safe therapeutic tool to facilitate the medical treatment of TSH-secreting pituitary adenomas in patients who underwent incomplete surgery or need long-term somatostatin analog therapy. 展开更多
关键词 pituitary adenomas thyroid-stimulating hormone long-acting octreotide formulation octreotide SURGERY
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The effect of using long-acting octreotide as adjuvant therapy for patients with grade 2 pancreatic neuroendocrine tumors after radical resection 被引量:12
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作者 Suizhi Gao Xiaohan Shi +5 位作者 Hongyun Ma Huan Wang Bo Li Bin Song Shiwei Guo Gang Jin 《Journal of Pancreatology》 2020年第4期167-172,共6页
Objective:To investigate the effect of long-acting octreotide as adjuvant therapy in the prevention of tumor recurrence in patients with grade 2 pancreatic neuroendocrine tumors(pNETs)after radical resection.Methods:T... Objective:To investigate the effect of long-acting octreotide as adjuvant therapy in the prevention of tumor recurrence in patients with grade 2 pancreatic neuroendocrine tumors(pNETs)after radical resection.Methods:The postoperative follow-up data of 130 patients with resectable G2 pNET treated in the Changhai Hospital from 2008 to 2018 were retrospectively analyzed:59 patients received long-acting octreotide as adjuvant therapy for 6 to 12 months(Oct group)and 71 patients received active follow-up(control group),both of which began after the radical resection,with the primary observation endpoint of disease-free survival(DFS)and the secondary study endpoint of overall survival.Results:The median age of the patients in the Oct group and control group was 52 and 54 years,respectively.There were 28 male cases(47.5%)and 33 male cases(46.5%)in the 2 groups.The median maximum tumor diameter was 3.5 and 3.0 cm,respectively;lymph node metastasis was positive in 13 cases(22.0%)and 9 cases(12.7%);there was peripancreatic nerve invasion in 11 cases(18.6%)and 6 cases(8.5%).Survival analysis revealed that there were significant differences in 2-year DFS%(98.3%vs 88.7%,P=.0371)and 3-year DFS%(96.6%vs 85.9%,P=.0498)between the Oct group and control group.Long-acting octreotide treatment was found to reduce the risk of 3-year recurrence of G2 pNET after radical resection(HR=0.2,P=.044)with the application of inverse-probability-of-treatment weighted to balance the limited data bias.Conclusion:Using long-acting octreotide as adjuvant therapy for G2 pNET patients after radical surgery may improve the rate of 3y-DFS,but the benefit needs to be confirmed in a well-designed random control clinical trial. 展开更多
关键词 Adjuvant therapy G2 long-acting octreotide Pancreatic neuroendocrine tumors
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Outcomes of long-acting injectable antipsychotics use in pregnancy:A literature review
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作者 Ana V Pejčić Srdjan M Stefanović +4 位作者 MilošN Milosavljević Vladimir S Janjić Marko M Folić Nevena D Folić Jovana Z Milosavljević 《World Journal of Psychiatry》 SCIE 2024年第4期582-599,共18页
BACKGROUND Women with a history of serious psychotic disorders are at increased risk of disease relapse during pregnancy.Long-acting injectable(LAI)antipsychotics have been widely used to improve adherence and prevent... BACKGROUND Women with a history of serious psychotic disorders are at increased risk of disease relapse during pregnancy.Long-acting injectable(LAI)antipsychotics have been widely used to improve adherence and prevent relapse in patients with various severe psychotic disorders,but there is a lack of high-quality data from previous research on the safety of LAI antipsychotics during pregnancy.AIM To summarize relevant data on maternal,pregnancy,neonatal,and developmental outcomes from published cases of LAI antipsychotic use in pregnancy.METHODS A literature search was performed through November 11,2023,using three online databases:PubMed/MEDLINE,Scopus,and Web of Science.Case reports or case series that reported information about the outcomes of pregnancy in women who used LAI antipsychotics at any point in pregnancy,with available full texts,were included.Descriptive statistics,narrative summation,and tabulation of the extracted data were performed.RESULTS A total of 19 publications satisfied the inclusion criteria:3 case series,15 case reports,and 1 conference abstract.They reported the outcomes of LAI antipsychotic use in 74 women and 77 pregnancies.The use of secondgeneration LAI antipsychotics was reported in the majority(n=47;61.0%)of pregnancies.First-generation LAI antipsychotics were administered during 30 pregnancies(39.0%).Most of the women(approximately 64%)had either satisfactory control of symptoms or no information about relapse,while approximately 12%of them had developed gestational diabetes mellitus.A minority of cases reported adverse outcomes such as stillbirth,spontaneous abortion,preterm birth,low birth weight,congenital anomalies,and neurological manifestations in newborns.However,there were no reports of negative long-term developmental outcomes.CONCLUSION Currently available data seem reassuring,but further well-designed studies are required to properly evaluate the risks and benefits of LAI antipsychotic use during pregnancy. 展开更多
关键词 Antipsychotic agents long-acting injectable PREGNANCY OUTCOME Review
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Hypercalcemia Appeared in a Patient with Glucagonoma Treated with Octreotide Acetate Long-acting Release
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作者 Rui Min Mei Li +4 位作者 Jiang-feng Mao Feng Gu Hui-juan Zhu Wen-hui Li Yu-xiu Li 《Chinese Medical Sciences Journal》 CAS CSCD 2012年第3期182-184,共3页
PABCREATIC neuroendocrine tumours are uncommon neoplasms of the pancreas.They may cause a clinical syndrome due to hormone overproduction.Glucagonoma is a rare kind of pancreatic tumors. Here we report a case of gluca... PABCREATIC neuroendocrine tumours are uncommon neoplasms of the pancreas.They may cause a clinical syndrome due to hormone overproduction.Glucagonoma is a rare kind of pancreatic tumors. Here we report a case of glucagonoma. Hypercalcemia occurred when the patient underwent octreotide acetate long-acting release. 展开更多
关键词 octreotide acetate long-acting release GLUCAGONOMA HYPERCALCEMIA
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Impacts and Demonstration Effects of Applying Long-acting Slow-release Fertilizer on Economic Yield of Peanut
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作者 Hongjie TANG Jiejie ZHANG +1 位作者 Qingfu DU Yanxue DANG 《Asian Agricultural Research》 2023年第5期49-51,共3页
[Objectives]To study the impacts and demonstration effects of long-acting slow-release fertilizer application on economic yield of peanut.[Methods]The 25,30,35,40,45,50 kg of long-acting slow-release fertilizers were ... [Objectives]To study the impacts and demonstration effects of long-acting slow-release fertilizer application on economic yield of peanut.[Methods]The 25,30,35,40,45,50 kg of long-acting slow-release fertilizers were applied to 667 m 2 of peanuts,and different amounts of urea were applied together.[Results]Applying 40 kg of long-acting slow-release fertilizer and 10.45 kg of urea had the best effect.Compared with the application of ordinary compound fertilizers,the plants did not age prematurely,the leaf diseases were mild,the stems and leaves remained dark green when harvested,and the stems and leaves had a longer functional period.Bearing shoots increased by 1.7,single-plant full pods increased by 2.4,double-seed peanuts increased by 3.2,empty pods decreased by 0.5,and single-seed peanuts decreased by 0.7.The experimental demonstration results show that the spring-sowed peanuts had an average yield increase of 29.0-67.2 kg/667 m 2,and the yield increase rate was 7.35%-16.89%,and the difference was extremely significant.[Conclusions]In the high-yield cultivation of peanuts,the application of long-acting slow-release fertilizer can be promoted to improve peanut production. 展开更多
关键词 PEANUT long-acting slow-release fertilizer Economic traits Yield-increase effect
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Factors Influencing the Choice between IUD and Implant among Long-Acting Reversible Contraceptive (LARCs) Users in Burkina Faso
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作者 Lonkila Moussa Zan Georges Guiella 《Advances in Reproductive Sciences》 2023年第4期73-85,共13页
Background: Long-acting and reversible contraceptive methods hold great potential as solutions to address the unmet need for contraception and the significant discontinuation rates, especially in sub-Saharan Africa. A... Background: Long-acting and reversible contraceptive methods hold great potential as solutions to address the unmet need for contraception and the significant discontinuation rates, especially in sub-Saharan Africa. Among these methods, the Implant has gained popularity in sub-Saharan Africa, whereas the utilization of Intrauterine Devices (IUDs) has remained comparatively low, particularly in Burkina Faso. This study aims to evaluate the shifts in IUD and Implant usage from 2010 to 2020 and to pinpoint the factors influencing the choice of IUDs among LARCs users in Burkina Faso. Data and Methods: We conducted an analysis using data from Burkina Faso, drawn from the 2010 Demographic and Health Survey (DHS) and the 2020 PMA Phase 1 data. The 2010 DHS garnered responses from 17,087 women aged 15 - 49, achieving a response rate of 98.4%. The 2020 PMA data collected responses from 6590 women aged 15 - 49, with a response rate of 95.8%. The final sample of Long-Acting Reversible Contraceptives (LARCs) users consisted of 1502 women, including 576 women from the 2010 survey and 926 women from the 2020 survey. Results: The study demonstrates an expansion of IUD usage to include socioeconomically disadvantaged segments among LARC users. However, higher levels of education, older age, and decisions influenced by healthcare providers are correlated with the preference for IUDs over Implants. The choice of IUDs is also connected to a comprehensive understanding of contraceptive methods, suggesting potential biases in the counseling process. Conclusion: Facilitating the broader adoption of IUDs among disadvantaged groups could be achieved by improving the accessibility of IUD products and services in rural areas. Nevertheless, there should be focused initiatives to enhance access to removal services, as this factor could dissuade specific users. Further efforts are required to train healthcare providers, aiming to mitigate biases in delivering Long-Acting Reversible Contraceptives (LARCs). Providers should provide impartial counseling, irrespective of the selected type of LARC. 展开更多
关键词 Modern Contraceptives long-acting Reversible Contraceptives (LARCs) CONTRACEPTION Family Planning Autonomy Burkina Faso
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Clinical Efficacy and Incidence of Adverse Reactions of Entecavir Combined with Long-Acting Interferon in Treating Hepatitis B
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作者 Qian Yang 《Journal of Clinical and Nursing Research》 2023年第6期41-46,共6页
Objective:To explore and analyze the clinical efficacy and incidence of adverse reactions of entecavir combined with long-acting interferon in treating hepatitis B.Methods:The study was conducted from January 2020 to ... Objective:To explore and analyze the clinical efficacy and incidence of adverse reactions of entecavir combined with long-acting interferon in treating hepatitis B.Methods:The study was conducted from January 2020 to December 2022,and the research subjects were 69 hepatitis B patients admitted to our hospital.The patients were divided into a research group(n=35)and a control group(n=34).Patients in the control group were treated with entecavir,while patients in the study group were treated with entecavir combined with long-acting interferon.The antiviral efficacy,liver function indicators,clinical effectiveness,and incidence of adverse reactions were compared between the two groups.Results:The HBV-DNA negative conversion rate and HBeAg seroconversion rate of the patients in the study group were higher than those of the control group,and the virological breakthrough rate was lower than that of the control group(P<0.05);the alanine transaminase(ALT),aspartate aminotransferase(AST),and total bilirubin(TBIL)levels of the patients in the study group were all lower after treatment.In the control group,the albumin(ALB)level was higher than that in the control group(P<0.05).The clinical effective rate of patients in the study group was higher than that in the control group(P<0.05);there was no significant difference in the incidence of adverse reactions between the two groups(P>0.05).Conclusion:The treatment effect of entecavir combined with long-acting interferon in patients with hepatitis B is significant.It can effectively antiviral and improve the liver function of patients.The incidence of adverse reactions is low and can be promoted and applied. 展开更多
关键词 ENTECAVIR long-acting interferon Hepatitis B
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生长抑素及Octreotide对急性胰腺炎胰腺细胞凋亡的作用机制 被引量:21
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作者 袁耀宗 龚自华 +3 位作者 楼恺娴 涂水平 翟祖康 徐家裕 《中国危重病急救医学》 CAS CSCD 2000年第7期402-405,共4页
目的 :探讨生长抑素 (SS)及其类似物 (Octreotide)治疗小鼠急性胰腺炎对胰腺细胞凋亡及凋亡调控基因 bax、p5 3的作用。方法 :以雨蛙肽诱导 CD 1小鼠急性胰腺炎模型 ,并应用细胞凋亡原位标记检测(TU NEL)染色、免疫组化技术等检测胰腺... 目的 :探讨生长抑素 (SS)及其类似物 (Octreotide)治疗小鼠急性胰腺炎对胰腺细胞凋亡及凋亡调控基因 bax、p5 3的作用。方法 :以雨蛙肽诱导 CD 1小鼠急性胰腺炎模型 ,并应用细胞凋亡原位标记检测(TU NEL)染色、免疫组化技术等检测胰腺细胞凋亡及凋亡调控基因 bax、p5 3的蛋白表达 ,以及生长抑素及其类似物治疗后对胰腺细胞凋亡及凋亡调控基因 bax和 p5 3蛋白表达的影响。结果 :HE染色见胰腺组织中典型的细胞核固缩及凋亡小体形成。 SS治疗后 1小时及 Octreotide治疗后 5、14小时胰腺细胞凋亡指数显著高于非治疗组 1、5和 14小时各时间点 (P均 <0 .0 1)。正常胰腺组织未见凋亡调控基因 bax、p5 3的表达 ,SS治疗后1小时胰腺细胞 p5 3染色阳性率明显高于非治疗组 ,P<0 .0 1,而非治疗组和 SS治疗组 1小时的胰腺细胞 bax染色阳性率无显著差异 ;Octreotide治疗后 5、14小时胰腺细胞 bax染色阳性率明显高于非治疗组相应时间点 ,P均 <0 .0 1,而非治疗组和 Octreotide治疗组 5、14小时的胰腺细胞 p5 3染色阳性率无显著差异。结论 :生长抑素及其类似物治疗急性胰腺炎的相同机制之一可能是诱导损伤的胰腺细胞凋亡以减轻炎症反应 ,但前者诱导胰腺细胞凋亡机制可能与凋亡调控基因 p5 3的表达有关而与 bax的表达无关 ; 展开更多
关键词 胰腺炎 急性 细胞凋亡 生长抑素 octreotide
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肿瘤生长抑素受体显像剂^(99)Tc^m-octreotide的制备及鉴定 被引量:16
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作者 武鸿文 管昌田 +1 位作者 梁正路 李云春 《中华核医学杂志》 CAS CSCD 北大核心 2000年第3期112-116,共5页
目的 建立99Tcm 直接标记octreotide的最佳方法 ,评价其受体介导结合特性以及作为肿瘤生长抑素受体显像剂的可能性。方法 采用抗坏血酸钠和连二亚硫酸钠作为还原剂 ,对oct reotide进行标记 ;用大鼠脑皮质细胞膜进行体外受体结合分析 ... 目的 建立99Tcm 直接标记octreotide的最佳方法 ,评价其受体介导结合特性以及作为肿瘤生长抑素受体显像剂的可能性。方法 采用抗坏血酸钠和连二亚硫酸钠作为还原剂 ,对oct reotide进行标记 ;用大鼠脑皮质细胞膜进行体外受体结合分析 ;进行动物体内分布、药代动力学、毒性实验和临床受体显像。结果 99Tcm octreotide放化纯达 78 5 % ,纯化后为 93 8% ,室温下放置 4h为92 1%。细胞膜体外放射受体结合分析证实99Tcm octreotide与octreotide具有相同的受体介导结合特性。 3例肺癌患者临床受体显像均获得阳性结果。结论 99Tcm 直接法标记octreotide方法可行 ,稳定性好 ;99Tcm 展开更多
关键词 肿瘤 生长抑素 受体显像剂 octreotide 制备
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^(99)Tc^m直接法标记Octreotide 被引量:6
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作者 武鸿文 管昌田 梁正路 《同位素》 CAS 2000年第3期152-156,共5页
建立了 99Tcm直接标记 Octreotide的方法 ,并选出了最佳标记条件。在最佳标记条件下 ,标记率为 78.6 % ,纯化后放化纯度为 93.8%。纯化后的标记物室温下放置 4 h,或分别与过量 DTPA、HSA和 L-半胱氨酸 37℃孵育 4 h,其放化纯度为 92 .1%... 建立了 99Tcm直接标记 Octreotide的方法 ,并选出了最佳标记条件。在最佳标记条件下 ,标记率为 78.6 % ,纯化后放化纯度为 93.8%。纯化后的标记物室温下放置 4 h,或分别与过量 DTPA、HSA和 L-半胱氨酸 37℃孵育 4 h,其放化纯度为 92 .1%~ 93.6 % ,无显著改变。 99Tcm 直接标记Octreotide方法可行 ,标记肽稳定性好 ,可望用于生长抑素受体显像。 展开更多
关键词 octreotide 锝99标记 肿瘤生长抑素受体显像
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^(111)In-DTPA-octreotide的标记条件研究及初步动物实验 被引量:5
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作者 王凡 樊红强 +6 位作者 肖伦 王翌善 金小海 陈大明 白宏升 程震 杜进 《同位素》 CAS 1997年第1期16-20,共5页
研究了一步法不经纯化111In标记生长激素抑制素(SMS)类似物DTPA-octreotide的标记条件,其中包括反应时间、DTPA-octreotide用量、反应体积等。标记率达99%,比活度为277.5PBq/m... 研究了一步法不经纯化111In标记生长激素抑制素(SMS)类似物DTPA-octreotide的标记条件,其中包括反应时间、DTPA-octreotide用量、反应体积等。标记率达99%,比活度为277.5PBq/mol,产物的放化纯度>99%。对标记物的稳定性及其在小鼠体内的分布也进行了观察。 展开更多
关键词 DTPA 铟111 标记条件 生物分布 肿瘤显像
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用^(188)Re直接标记octreotide 被引量:6
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作者 章斌 吴翼伟 +1 位作者 范我 江一民 《中华核医学杂志》 CAS CSCD 北大核心 2003年第1期55-56,共2页
目的 探讨具有较高标记率和良好稳定性的1 88Re直接标记octreotide的方法。方法 采用预锡化法标记octreotide。①分别在标记后 1、2、3、4、5、6h测定标记率 ;②乙酸缓冲液pH值从3 8~ 5 .8;③淋洗液体积从 5 0~ 2 5 0 μL ;④多因... 目的 探讨具有较高标记率和良好稳定性的1 88Re直接标记octreotide的方法。方法 采用预锡化法标记octreotide。①分别在标记后 1、2、3、4、5、6h测定标记率 ;②乙酸缓冲液pH值从3 8~ 5 .8;③淋洗液体积从 5 0~ 2 5 0 μL ;④多因素分析法同时改变octreotide和氯化亚锡的用量 ;⑤标记完成 0 .5h后分别加入人血清或生理盐水 5 0 μL ,室温下放置 48h以测定标记物体外稳定性。 结果1 88Re直接标记octreotide最佳标记条件 :0 .1mL葡萄糖酸钠 ( 0 .3mol L) ,0 .0 4mL浓盐酸溶解的SnCl2 ·2H2 O ( 2 0g L) ,0 .0 4mL 0 .2mol L乙酸缓冲液 (pH值 5 .0 ) ,0 .0 5mLoctreotide( 2g L) ,1 88ReO-4 淋洗液0 .1mL。1 88Re octreotide可达到最大标记率 ( 92 .6± 1.9) % ,室温下放置 2 4h标记率为 ( 86.6± 1 8) % ,在标记物中加入人血清 5 0 μL后室温下放置 2 4h标记率为 ( 84.2± 2 .7) %。标记反应中胶体含量均小于 8%。结论 预锡化直接标记法简便快速 ,能够得到较高的标记率 ,稳定性好 ,无需进一步纯化。 展开更多
关键词 同位素标记 奥曲肽
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^(125)I-[Tyr^3]-octreotide内化及杀伤NCI-H446细胞的研究 被引量:9
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作者 孙俊杰 范我 +3 位作者 许玉杰 张友九 朱然 胡明江 《中华核医学杂志》 CAS CSCD 北大核心 2004年第3期144-146,共3页
目的 探讨小细胞肺癌NCI H4 4 6细胞株内化 [Tyr3] 奥曲肽 ([Tyr3] octreotide,TOC)的能力及1 2 5I TOC杀伤NCI H4 4 6细胞的效应。方法 以1 2 5I TOC为放射配基 ,生长抑素受体 (SSTR)阳性细胞NCI H4 4 6于 37℃与1 2 5I TOC共同保温... 目的 探讨小细胞肺癌NCI H4 4 6细胞株内化 [Tyr3] 奥曲肽 ([Tyr3] octreotide,TOC)的能力及1 2 5I TOC杀伤NCI H4 4 6细胞的效应。方法 以1 2 5I TOC为放射配基 ,生长抑素受体 (SSTR)阳性细胞NCI H4 4 6于 37℃与1 2 5I TOC共同保温不同时间后 ,分别检测细胞的总结合、内化及结合到核上的1 2 5I TOC ;采用噻唑蓝 (MTT)法检测不同剂量1 2 5I TOC、游离1 2 5I及TOC在不同时间对细胞存活率的影响。结果 NCI H4 4 6细胞内化1 2 5I TOC和细胞核结合1 2 5I TOC呈时间依赖性 ,至 2 4h最高 ,结合到核上1 2 5I TOC的量为 0 5h的 7倍 ;1 2 5I TOC对SSTR阳性的NCI H4 4 6细胞的杀伤作用呈剂量 效应、时间 效应关系 ,以 74kBq1 2 5I TOC作用 96h的杀伤效应最大 ,细胞存活率降至 (4 4 8± 7 2 ) %。结论 1 2 5I TOC可在SSTR介导下内化进入细胞并可杀伤细胞 ,呈时间 效应和剂量 效应关系。 展开更多
关键词 小细胞肺癌 培养的细胞 放射疗法 [Tyt^3]-octreotide
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^(99m)Tc-MIBI与^(99m)Tc-Octreotide生长抑素受体显像诊断乳腺癌的对比研究 被引量:6
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作者 王佳琼 王自正 +5 位作者 姚薇萱 王峰 陈正国 徐崇英 曹艳 孟庆乐 《中国医学影像学杂志》 CSCD 2006年第2期91-93,共3页
目的:比较99mTcMIBI与99mTcOctreotide生长抑素受体显像对乳腺癌诊断的临床价值。材料和方法:对36例怀疑为乳腺癌的患者术前行99mTcMIBI显像,48小时后行99mTcOctreotide生长抑素受体显像,以术后病理检查结果作为金标准。结果:36例中,25... 目的:比较99mTcMIBI与99mTcOctreotide生长抑素受体显像对乳腺癌诊断的临床价值。材料和方法:对36例怀疑为乳腺癌的患者术前行99mTcMIBI显像,48小时后行99mTcOctreotide生长抑素受体显像,以术后病理检查结果作为金标准。结果:36例中,25例为乳腺癌,其中11例发生腋窝淋巴结转移;11例患者为乳腺良性病变。两种显像方法对乳腺癌诊断的灵敏度、特异性、准确性分别为92.0%、63.6%、83.3%和92.0%、27.3%、72.2%。结论:99mTcMIBI显像与99mTcOctreotide生长抑素受体显像对乳腺癌均有较好的诊断价值,但99mTcOctreotide生长抑素受体显像诊断特异性较低。由于本研究的病例数有限,有待于进一步的工作深入探讨。 展开更多
关键词 乳腺癌 ^99MTC-MIBI ^99mTc-octreotide 放射性核素显像
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~(99_Tc^m-octreotide在荷H22肝癌小鼠体内分布和显像研究 被引量:2
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作者 张秀梅 冯珏 +3 位作者 马慧莉 王亚平 王鹏 杨新毅 《中国医学影像技术》 CSCD 北大核心 2006年第6期945-948,共4页
目的探讨99Tcmoctreotide作为生长抑素受体阳性肿瘤显像剂的可能性。方法99Tcmoctreotide的制备采用直接标记奥曲肽冻干品药盒的方法。①体内分布实验:25只正常KM小鼠和15只荷H22肝癌小鼠,静脉注射显像剂0.1ml(3.7MBq)后行常规体内分布... 目的探讨99Tcmoctreotide作为生长抑素受体阳性肿瘤显像剂的可能性。方法99Tcmoctreotide的制备采用直接标记奥曲肽冻干品药盒的方法。①体内分布实验:25只正常KM小鼠和15只荷H22肝癌小鼠,静脉注射显像剂0.1ml(3.7MBq)后行常规体内分布实验,计算%ID/g及肿瘤的T/NT值。②荷瘤鼠显像:5只荷瘤鼠于注入显像剂后1、2、3、4、6h和24h不同时相分别显像并计算T/B值。结果①体内分布:正常小鼠体内分布显示,血液在0.5h放射性最高[(3.20±0.54)%ID/g],随后迅速清除。双肾1h摄取达最高[(13.62±4.83)%ID/g],提示显像剂主要经泌尿系统排泄。99Tcmoctreotide在荷瘤鼠的体内分布与正常小鼠一致,肿瘤与其他脏器组织的T/NT较高。②受体显像:注射显像剂1h后,小鼠全身轮廓清晰,肾和膀胱高度摄取显像剂,荷瘤鼠的已知肿瘤部位呈阳性显像。在2h肿瘤部位的放射性浓聚最高,显像效果最佳。随后放射性逐渐减弱,但肿瘤影像仍较清晰。24h时图像模糊。注射显像剂后1、2、3、4、6h和24h的T/B值分别为2.64、4.46、7.25、5.40、5.49和6.48,2h以后各时相与1h相比有显著性差异(P<0.05),但3h以后与前一时间点比较差异均无显著性(P>0.05)。结论一步法药盒制备的99Tcmoctreotide,在小鼠H22肝癌组织中分布快,消除较慢,靶和本底比值较高,注射后2h肿瘤显像最佳。99Tcmoctreotide是一种很有前景的生长抑素受体显像剂。 展开更多
关键词 生长抑素受体 奥曲肽 核素显像 小鼠 生物分布
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SMS 受体显像剂^(99)Tc^m-DTPA-octreotide 的研制──Ⅰ . 标记条件研究 被引量:1
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作者 程震 林琼芳 +5 位作者 金小海 王凡 陈大明 白宏升 樊红强 杜进 《同位素》 CAS 1997年第3期150-157,共8页
研究pH、DTPA-octreotide与SnCl2·2H2O摩尔比、反应温度、反应时间、反应物浓度等条件对标记产物的影响。实验表明99Tcm标记DTPA-octreotide时,其标记率可达到90%;纯化后,可... 研究pH、DTPA-octreotide与SnCl2·2H2O摩尔比、反应温度、反应时间、反应物浓度等条件对标记产物的影响。实验表明99Tcm标记DTPA-octreotide时,其标记率可达到90%;纯化后,可以用作下一步肿瘤SMS受体显像。建立了99Tcm-DTPA-octreotide放化纯度纸色层分析方法和反相HPLC法,这二种方法能够快速、准确地测定标记物的放射化学纯度。另外,HPLC分析表明,标记物为几种络合物的混合物,在不同的标记条件下,络合物的种类、相互比例不同。 展开更多
关键词 SMS受体 显像剂 标记条件 同位素 锝99
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^(188)Re,^(99m)Tc-octreotide,[^(125)I-Tyr^3]octreotide体外受体活性对比研究 被引量:1
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作者 吴翼伟 章斌 +4 位作者 叶千春 孙俊杰 范我 许玉杰 江一民 《中国医学影像学杂志》 CSCD 2004年第6期432-435,共4页
目的 :体外受体结合实验比较1 88Re ,99mTc ,和1 2 5I 标记生长抑素受体结合多肽的生物活性。材料和方法 :采用直接法标记1 88Re OCT ,99mTc OCT ,氯胺T法标记1 2 5I TOC。以大鼠脑皮质细胞为组织受体 ,进行饱和试验 ,测定 3种标记物的K... 目的 :体外受体结合实验比较1 88Re ,99mTc ,和1 2 5I 标记生长抑素受体结合多肽的生物活性。材料和方法 :采用直接法标记1 88Re OCT ,99mTc OCT ,氯胺T法标记1 2 5I TOC。以大鼠脑皮质细胞为组织受体 ,进行饱和试验 ,测定 3种标记物的Kd值。结果 :1 2 5I TOC对大鼠脑皮质细胞的Kd =3.5 6± 0 .92nM ,Bmax =35 .31± 1 .6 3fmol/ μg ;99mTc OCT的Kd =1 1 .2 5±1 .2 6nM ,Bmax =35 .0 6± 1 .87fmol/ μg ;1 88Re OCT的Kd =1 8.2 8± 2 .1 3nM ,Bmax =34 .70± 1 .0 1fmol/ μg。 结论 :99mTc OCT、1 88Re OCT亲和力小于1 2 5I TOC ,但仍保持较高生物活性 。 展开更多
关键词 ^125I ^188RE ^99MTC OCT 体外 受体 脑皮质 标记 TOC 饱和
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人小细胞肺癌NCI-H446裸鼠模型的^(99m)Tc-octreotide受体显像研究 被引量:2
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作者 李超 左书耀 +3 位作者 王叙馥 刘新峰 王国明 武风玉 《中国肺癌杂志》 CAS CSCD 北大核心 2015年第1期1-7,共7页
背景与目的小细胞肺癌恶性程度高,早期诊断对其预后有重要价值,目前的检查方法比较局限,传统影像学方法特异性差,而PET/CT价格昂贵,难于推广应用。小细胞肺癌属神经内分泌肿瘤,高表达生长抑素受体,是其早期进行分子影像诊断的理论基石... 背景与目的小细胞肺癌恶性程度高,早期诊断对其预后有重要价值,目前的检查方法比较局限,传统影像学方法特异性差,而PET/CT价格昂贵,难于推广应用。小细胞肺癌属神经内分泌肿瘤,高表达生长抑素受体,是其早期进行分子影像诊断的理论基石。本实验旨在观察99mTc-octreotide在正常裸鼠体内的分布、代谢及荷人NCI-H446小细胞肺癌裸鼠模型体内显像变化,为临床小细胞肺癌早期诊断奠定基础。方法建立人小细胞肺癌的裸鼠肿瘤模型,正常裸鼠及荷瘤鼠静脉注射99mTc-octreotide显像剂后行动态及延迟显像。运用感兴趣区(region of interest,ROI)技术勾画各时相裸鼠各脏器、肿瘤(T)及肿瘤对侧对应部位(N)放射性计数,计算相应T/N比值,并建立30 min内各ROI的时间-放射性(A-T)曲线。结果 1正常裸鼠的肾脏、肝脏内99mTc-octreotide分布最多,肺部、心脏部位分布较低,头部放射性分布最少,99mTc-octreotide主要通过泌尿系统排泄;各脏器30 min内A-T曲线显示放射性分布随时间延迟呈逐渐下降趋势。25例荷瘤裸鼠的肿瘤显像均呈阳性;静脉注射99mTc-octreotide后肿瘤部位在3 h显像最清楚,整个检查时间内肝脏放射性强度明显高于肿瘤组织,肺部放射性与肿瘤部位较相近。半定量分析结果显示,静脉注射99mTc-octreotide后肿瘤组织与对侧肢体肌肉的T/N比值在0.5 h、2 h、3 h、4 h分别为.63±0.03、2.08±0.2、3.03±0.23、2.689±0.3;各时相T/N比值差异有统计学意义(F=5.69,P<0.000,);通过两两比较发现,静脉注射显像剂后3 h的T/N比值与其他各时相差异均有统计学意义(P<0.05);不同检查时间肝脏部位的放射性平均计数高于肿瘤部位,肺部的平均计数与肿瘤相近。肿瘤部位A-T曲线显示,注射99mTc-octreotide后2 min-3 min出现一过性放射性分布高峰。结论运用99mTc-octreotide作显像剂,人小细胞肺癌NCI-H446裸鼠模型具有极高的显像阳性率,且3 h肿瘤显像最清楚。 展开更多
关键词 99m锝 奥曲肽 小细胞肺癌 裸鼠 受体显像
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NCI-H446细胞的^(125)Ⅰ-[Tyr^3]octreotide受体分析 被引量:2
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作者 孙俊杰 范我 +2 位作者 许玉杰 张友九 朱然 《放射免疫学杂志》 CAS 2002年第5期277-279,共3页
目的 :探讨小细胞肺癌与 [Tyr3 ]octreotide (TOC)的亲和力。方法 :用氯胺T方法标记的12 5I-TOC作为配基 ,检测小细胞肺癌细胞株NCl-H4 4 6与其结合的受体位点数及亲和常数。结果 :氯胺T法标记的12 5I-TOC经SephadexG - 10纯化后放化纯... 目的 :探讨小细胞肺癌与 [Tyr3 ]octreotide (TOC)的亲和力。方法 :用氯胺T方法标记的12 5I-TOC作为配基 ,检测小细胞肺癌细胞株NCl-H4 4 6与其结合的受体位点数及亲和常数。结果 :氯胺T法标记的12 5I-TOC经SephadexG - 10纯化后放化纯大于 95 % ;受体分析显示NCI-H4 4 6表达的生长抑素受体多 (Bmax =1 17× 10 5受体位点 /细胞 ) ,与12 5I-TOC亲和力强 (Kd =0 5 8nM)。结论 :TOC的标记物可用于小细胞肺癌肿瘤的受体显像及放射治疗。 展开更多
关键词 NCl—H446细胞 [Tyr^3]octreotide 受体分析 小细胞肺癌 TOC 氯胺T法标记 碘同位素
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SnCl_2还原法生长抑素受体显像剂^(99)Tc^m-octreotide(奥曲肽)的生物活性研究 被引量:2
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作者 马庆杰 徐文贵 +2 位作者 张建中 温强 李路平 《中国老年学杂志》 CAS CSCD 北大核心 2004年第11期1048-1049,共2页
目的 检测SnCl2 还原法生长抑素受体显像剂99Tcm octreotide(奥曲肽 )的生物活性。方法 自制大鼠脑皮质细胞膜 ,进行99Tcm oc treotide与其受体特异性结合能力测定 (TB)、非特异性结合能力测定 (NBS)与竞争性抑制能力测定 ,判断SnCl2... 目的 检测SnCl2 还原法生长抑素受体显像剂99Tcm octreotide(奥曲肽 )的生物活性。方法 自制大鼠脑皮质细胞膜 ,进行99Tcm oc treotide与其受体特异性结合能力测定 (TB)、非特异性结合能力测定 (NBS)与竞争性抑制能力测定 ,判断SnCl2 还原法生长抑素受体显像剂99Tcm oc treotide的生物活性。结果 在大鼠脑细胞膜受体固定的条件下99Tcm octreotide与脑细胞膜受体的特异性结合量随99Tcm octreotide的增加而增加 ,但增加的幅度逐渐减低 ,呈饱和趋势 ;非特异性结合量随99Tcm octreotide的增加呈直线上升 ,无饱和趋势 ;竞争抑制实验结果显示 ,随着非标记99Tcm octreotide含量的逐渐增加 ,99Tcm octreotide与脑细胞膜的结合率逐渐降低。结论 本研究获得的99Tcm octreotide具有生长抑素类似物正常的生物学功能。 展开更多
关键词 ^99Tc^m-octreotide 生长抑素受体 生物活性
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