The injury of central nervous system (CNS) usually causes the cavity formation. Although transplantation of neural stem/precursor cells (NSPCs) into the lesioned area of CNS has been shown to be implicated in the func...The injury of central nervous system (CNS) usually causes the cavity formation. Although transplantation of neural stem/precursor cells (NSPCs) into the lesioned area of CNS has been shown to be implicated in the functional restoration, the therapeutic result is limited by the poor survival of NSPCs as well as their insufficient proliferation and differentiation abilities. Type-1 collagen is considered as a candidate scaffold or drug delivery system to overcome the aforementioned obstacle. This study observed the effects of the CNTF (ciliary neurotrophic factor)-collagen gel-controlled delivery system and daily addition of soluble-form CNTF on the NSPC survival, migration, proliferation and differentiation. The results showed that, within 12 h of the initial co-culture, CNTF was released in a burst pattern, then the CNTF-collagen gel-controlled delivery system stably released CNTF for up to 12 d. The cell viability test, together with immunohistochemistry, RT-PCR and Western blotting, showed that the CNTF-collagen gel-controlled delivery system supported the NSPCs seeded on the surface of collagen gel survival and facilitated their migration and proliferation. The daily addition of soluble-form CNTF to the medium had similar effects to the CNTF-collagen gel-controlled delivery system, but large quantities of soluble-form CNTF were consumed during the entire process. Taken together, the CNTF-collagen gel-controlled delivery system not only provides a physical scaffold for the transplanted NSPCs to adhere and migrate, but also facilitates the NSPC survival, growth and proliferation, simultaneously reducing the consumption of the expensive growth factors. This system may be used to enhance the microenvironment in the lesioned area of CNS.展开更多
目的观察血清脂质运载蛋白2(lipocalin 2,LCN2)、骨代谢指标与中年女性骨密度的相关性。方法分析253名汉族女性资料,通过双能X线吸收测定法测量其腰椎和股骨颈的骨密度(bone mineral density,BMD),测量LCN2、I型胶原的羧基末端交联端肽(...目的观察血清脂质运载蛋白2(lipocalin 2,LCN2)、骨代谢指标与中年女性骨密度的相关性。方法分析253名汉族女性资料,通过双能X线吸收测定法测量其腰椎和股骨颈的骨密度(bone mineral density,BMD),测量LCN2、I型胶原的羧基末端交联端肽(type I collage cross-linked-telopeptide,CTX)、骨钙蛋白(osteocalcin,OCN)和肌酸酐(screatinine,Scr)的血清水平。结果LCN2与腰椎和股骨颈的BMD呈负相关。LCN2和CTX、OCN、年龄、Scr之间呈显著正相关。调整年龄和Scr后,LCN2、BMDs和OCN之间的相关性消失,但LCN2仍与CTX呈正相关。LCN2的血清浓度在有和没有骨质疏松性骨折的受试者之间没有显示出显著差异。在多变量回归分析中,LCN2是血清CTX变化的主要决定因素之一。结论在中年女性中,血清LCN2水平、BMD和OCN之间的关系受到年龄和Scr的干扰。虽然LCN2与CTX呈正相关,但相关性非常小。展开更多
AIM: To investigate the relationship between clinicopathological features and bone turnover markers in castration-resistant prostate cancer(CRPC) patients treated with docetaxel.METHODS: Thirty-three patients were enr...AIM: To investigate the relationship between clinicopathological features and bone turnover markers in castration-resistant prostate cancer(CRPC) patients treated with docetaxel.METHODS: Thirty-three patients were enrolled in this study. Serum levels of carboxyterminal cross-linked telopeptide of type 1 collagen generated by metalloproteinases(1CTP) and alkaline phosphatase(ALP) were measured at the start of docetaxel chemotherapy. We examined the relationship between clinicopathological features and serum levels of 1CTP and ALP levels in CRPC patients treated with docetaxel.RESULTS: For the total patient group, the mean ± standard deviation(SD) values for docetaxel chemotherapy dose, dose intensity, dosage interval, and num-ber of cycles were 59.3 ± 10.6 mg/m2, 13.9 ± 5.2 mg/m2 per week, 4.7 ± 1.2 wk, and 11.2 ± 7.4, respectively. Fourteen patients died from prostate cancer. Patients were divided into two groups according to mean + SD of serum 1CTP(8.2 ng/m L) and ALP(538.2 IU/L) levels at the start of docetaxel chemotherapy. Patients with lower levels of serum 1CTP and ALP had significantly better survivals than those with higher serum levels(P < 0.05).CONCLUSION: Serum levels of 1CTP and ALP are predictors of survival in patients with CRPC who are treated with docetaxel.展开更多
背景:p38丝裂原活化蛋白激酶信号转导通路属于丝裂原活化蛋白激酶家族成员,在骨关节炎的发生发展中发挥重要作用。目的:对骨关节炎病理进程中p38丝裂原活化蛋白激酶信号转导通路相关作用机制的研究进展进行综述。方法:由第一作者用计算...背景:p38丝裂原活化蛋白激酶信号转导通路属于丝裂原活化蛋白激酶家族成员,在骨关节炎的发生发展中发挥重要作用。目的:对骨关节炎病理进程中p38丝裂原活化蛋白激酶信号转导通路相关作用机制的研究进展进行综述。方法:由第一作者用计算机检索中国期刊全文数据库和PubMed数据库,检索词分别为"p38丝裂原活化蛋白激酶信号通路、骨关节炎、关节软骨、软骨细胞"和"p38MAPK signal transduction pathway,osteoarthritis,Articular cartilage,Chondrocyte"。从p38丝裂原活化蛋白激酶信号通路简介,p38丝裂原活化蛋白激酶在骨关节炎中的作用,p38丝裂原活化蛋白激酶阻断剂在骨关节炎中的应用3方面进行总结。共检索到可应用文献90篇,按纳入标准对文献进行筛选,共纳入46篇文章。结果与结论:p38丝裂原活化蛋白激酶信号通路与软骨细胞的肥大化和钙化、软骨细胞的凋亡、软骨基质金属蛋白酶的合成、软骨炎性细胞因子的产生等有密切关系,对骨关节炎的发生发展有重要影响。p38丝裂原活化蛋白激酶通过多种复杂的机制参与骨关节炎的形成和发展,对其起到极其重要的作用,因此阻断p38丝裂原活化蛋白激酶信号通路可能成为骨关节炎治疗的新靶点。展开更多
基金supported by the National High Technology Research and Development Program of China (Grant No. 2006AA02A129) the Key Project of Department of Science and Technology of Beijing (Grant No. D09080703660902)
文摘The injury of central nervous system (CNS) usually causes the cavity formation. Although transplantation of neural stem/precursor cells (NSPCs) into the lesioned area of CNS has been shown to be implicated in the functional restoration, the therapeutic result is limited by the poor survival of NSPCs as well as their insufficient proliferation and differentiation abilities. Type-1 collagen is considered as a candidate scaffold or drug delivery system to overcome the aforementioned obstacle. This study observed the effects of the CNTF (ciliary neurotrophic factor)-collagen gel-controlled delivery system and daily addition of soluble-form CNTF on the NSPC survival, migration, proliferation and differentiation. The results showed that, within 12 h of the initial co-culture, CNTF was released in a burst pattern, then the CNTF-collagen gel-controlled delivery system stably released CNTF for up to 12 d. The cell viability test, together with immunohistochemistry, RT-PCR and Western blotting, showed that the CNTF-collagen gel-controlled delivery system supported the NSPCs seeded on the surface of collagen gel survival and facilitated their migration and proliferation. The daily addition of soluble-form CNTF to the medium had similar effects to the CNTF-collagen gel-controlled delivery system, but large quantities of soluble-form CNTF were consumed during the entire process. Taken together, the CNTF-collagen gel-controlled delivery system not only provides a physical scaffold for the transplanted NSPCs to adhere and migrate, but also facilitates the NSPC survival, growth and proliferation, simultaneously reducing the consumption of the expensive growth factors. This system may be used to enhance the microenvironment in the lesioned area of CNS.
文摘目的观察血清脂质运载蛋白2(lipocalin 2,LCN2)、骨代谢指标与中年女性骨密度的相关性。方法分析253名汉族女性资料,通过双能X线吸收测定法测量其腰椎和股骨颈的骨密度(bone mineral density,BMD),测量LCN2、I型胶原的羧基末端交联端肽(type I collage cross-linked-telopeptide,CTX)、骨钙蛋白(osteocalcin,OCN)和肌酸酐(screatinine,Scr)的血清水平。结果LCN2与腰椎和股骨颈的BMD呈负相关。LCN2和CTX、OCN、年龄、Scr之间呈显著正相关。调整年龄和Scr后,LCN2、BMDs和OCN之间的相关性消失,但LCN2仍与CTX呈正相关。LCN2的血清浓度在有和没有骨质疏松性骨折的受试者之间没有显示出显著差异。在多变量回归分析中,LCN2是血清CTX变化的主要决定因素之一。结论在中年女性中,血清LCN2水平、BMD和OCN之间的关系受到年龄和Scr的干扰。虽然LCN2与CTX呈正相关,但相关性非常小。
基金Supported by Grants-in-Aid from the Ministry of Education,Culture,Sports,Science and Technology,Tokyo,Japan,No.22591761,No.23791792
文摘AIM: To investigate the relationship between clinicopathological features and bone turnover markers in castration-resistant prostate cancer(CRPC) patients treated with docetaxel.METHODS: Thirty-three patients were enrolled in this study. Serum levels of carboxyterminal cross-linked telopeptide of type 1 collagen generated by metalloproteinases(1CTP) and alkaline phosphatase(ALP) were measured at the start of docetaxel chemotherapy. We examined the relationship between clinicopathological features and serum levels of 1CTP and ALP levels in CRPC patients treated with docetaxel.RESULTS: For the total patient group, the mean ± standard deviation(SD) values for docetaxel chemotherapy dose, dose intensity, dosage interval, and num-ber of cycles were 59.3 ± 10.6 mg/m2, 13.9 ± 5.2 mg/m2 per week, 4.7 ± 1.2 wk, and 11.2 ± 7.4, respectively. Fourteen patients died from prostate cancer. Patients were divided into two groups according to mean + SD of serum 1CTP(8.2 ng/m L) and ALP(538.2 IU/L) levels at the start of docetaxel chemotherapy. Patients with lower levels of serum 1CTP and ALP had significantly better survivals than those with higher serum levels(P < 0.05).CONCLUSION: Serum levels of 1CTP and ALP are predictors of survival in patients with CRPC who are treated with docetaxel.
文摘背景:p38丝裂原活化蛋白激酶信号转导通路属于丝裂原活化蛋白激酶家族成员,在骨关节炎的发生发展中发挥重要作用。目的:对骨关节炎病理进程中p38丝裂原活化蛋白激酶信号转导通路相关作用机制的研究进展进行综述。方法:由第一作者用计算机检索中国期刊全文数据库和PubMed数据库,检索词分别为"p38丝裂原活化蛋白激酶信号通路、骨关节炎、关节软骨、软骨细胞"和"p38MAPK signal transduction pathway,osteoarthritis,Articular cartilage,Chondrocyte"。从p38丝裂原活化蛋白激酶信号通路简介,p38丝裂原活化蛋白激酶在骨关节炎中的作用,p38丝裂原活化蛋白激酶阻断剂在骨关节炎中的应用3方面进行总结。共检索到可应用文献90篇,按纳入标准对文献进行筛选,共纳入46篇文章。结果与结论:p38丝裂原活化蛋白激酶信号通路与软骨细胞的肥大化和钙化、软骨细胞的凋亡、软骨基质金属蛋白酶的合成、软骨炎性细胞因子的产生等有密切关系,对骨关节炎的发生发展有重要影响。p38丝裂原活化蛋白激酶通过多种复杂的机制参与骨关节炎的形成和发展,对其起到极其重要的作用,因此阻断p38丝裂原活化蛋白激酶信号通路可能成为骨关节炎治疗的新靶点。
