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鼻用制剂是一类直接用于鼻腔、发挥局部或全身治疗作用的制剂,具有吸收迅速、起效快、能避免肝脏首过效应、生物利用度高,以及绕过血脑屏障实现脑靶向等优点。其中含药气溶胶粒径及分布是其关键质量属性,与药物的有效性和安全性息息相关。大小鼠固定在操作台上,通过该雾化装置可以将精确定量的液体供试品给到鼠的鼻腔。
性能特点:
精确定量
较鼻腔滴注在鼻腔中分布更均匀
直达鼻腔、易于操作
更安全的提供高浓度
可输送液体、悬浮液
应用范围:
广泛应用于呼吸系统疾病、毒理学、药理学、吸入免疫、生物安全、大气污染物、化学物质
毒性鉴定、药物开发与安全性评价、环境与健康等领域
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文献和实验Treating Multiorgan Fibrosis
Qiang Long, Zehua Liu, Qianwen Shao, Hongpeng Shi, Shixing Huang, Chenyu Jiang,
Bei Qian, Yiming Zhong, Xiaojun He, Xiaogang Xiang, Yang Yang, Bing Li, Xiaoxiang Yan,
Qiang Zhao,* Xiaoli Wei,* Hélder A. Santos,* and Xiaofeng Ye*
Fibrotic diseases remain a substantial health burden with few therapeutic
approaches. A hallmark of fibrosis is the aberrant activation and accumulation
of myofibroblasts, which is caused by excessive profibrotic cytokines.
Conventional anticytokine therapies fail to undergo clinical trials, as simply
blocking a single or several antifibrotic cytokines cannot abrogate the
profibrotic microenvironment. Here, biomimetic nanoparticles based on
autologous skin fibroblasts are customized as decoys to neutralize multiple
fibroblast-targeted cytokines. By fusing the skin fibroblast membrane onto
poly(lactic-co-glycolic) acid cores, these nanoparticles, termed fibroblast
membrane-camouflaged nanoparticles (FNPs), are shown to effectively
scavenge various profibrotic cytokines, including transforming growth
factor-휷, interleukin (IL)-11, IL-13, and IL-17, thereby modulating the
profibrotic microenvironment. FNPs are sequentially prepared into multiple
formulations for different administration routines. As a proof-of-concept, in
three independent animal models with various organ fibrosis (lung fibrosis,
liver fibrosis, and heart fibrosis), FNPs effectively reduce the accumulation of
myofibroblasts, and the formation of fibrotic tissue, concomitantly restoring
organ function and indicating that FNPs are a potential broad-spectrum
therapy for fibrosis management.
Q. Long, H. Shi, S. Huang, C. Jiang, B. Qian, Y. Zhong, X. He, Q. Zhao,
X. Ye
Department of Cardiovascular Surgery
Ruijin Hospital
Shanghai Jiao Tong University School of Medicine
Shanghai 200025, China
E-mail: zq11607@rjh.com.cn; yxf11612@rjh.com.cn
Z. Liu, H. A. Santos
Department of Biomedical Engineering, W.J. Kolff Institute for
Biomedical Engineering and Materials Science
University Medical Center Groningen/University of Groningen
Ant. Deusinglaan 1, Groningen 9713 AV, The Netherlands
E-mail: h.a.santos@umcg.nl
The ORCID identification number(s) for the author(s) of this article
can be found under
© 2022 The Authors. Advanced Science published by Wiley-VCH GmbH.
This is an open access article under the terms of the Creative Commons
Attribution License, which permits use, distribution and reproduction in
any medium, provided the original work is properly cited.
DOI: 10.1002/advs.202200856
1. Introduction
Fibrosis, or disordered fibrotic tissue formation, is characterized by the abnormal
fibroblast activation that induces excessive extracellular matrix (ECM) remodeling
and primarily accounts for multiple organ
dysfunctions.[1] The pervasive occurrence
of fibrosis in almost all diseases generates
a large healthcare burden worldwide. However, the clinical benefits of antifibrotic therapy through small molecules, such as pirfenidone and nintedanib, are usually offset
by their modest therapeutic efficacy, limited
indications and severe side effects.[2] Therefore, alternative clinical intervention modalities to target fibrosis are urgently needed.
Considering the central role of myofibroblast activation and proliferation in
fibrosis establishment,[3] recent breakthroughs have focused on the ablation
of progressive myofibroblast activation
through autologous cell-based therapy.
For example, autologous chimeric antigen
Z. Liu, H. A. Santos
Drug Research Program
Division of Pharmaceutical Chemistry and Technology
Faculty of Pharmacy
University of Helsinki
Helsinki FI-00014, Finland
Q. Shao, X. Wei
Department of Pharmacology
School of Basic Medical Sciences
Fudan University
Shanghai 200032, China
E-mail: xlwei@fudan.edu.cn
X. Xiang
Department of Infectious Diseases
Ruijin Hospital
Shanghai Jiao Tong University School of Medicine
Shanghai 200025, China
Y. Yang
Department of Thoracic Surgery
Shanghai Pulmonary Hospital
School of Medicine
Tongji University
Shanghai 200000, China
Adv. Sci. 2022, 9, 2200856 2200856 (1 of 14) © 2022 The Authors. Advanced Science published by Wiley-VCH GmbH
一、饲养环境 小鼠对环境的适应性的自体调节能力和疾病抗御能力较其他实验动物差,而小鼠的品种和品系繁多,各个品种和品系都有自己的特殊要求,因此必须根据实际情况给予一个清洁舒适的生活环境。不同等级的小鼠应生活在相应的设施中。 小鼠临界温度为低温 10℃,高温 37℃,温度中性范围 30~33℃。饲养环境控制应达到如下要求:温度 18~29℃;相对湿度 40~70%;最好控制在 18~22℃,湿度 50~60%。一般小鼠饲养盒内温度比环境高 1~2℃,湿度高 5~10%。 要保持温度、湿度相对稳定
原创 SOOF 生物学霸 2022-04-20 17:59 4 月 12 日,江苏集萃药康生物科技股份有限公司开启申购,在公司公开的招股书中显示该公司主营业务为实验动物小鼠模型的研发、生产、销售及提供相关技术服务。部分品系的小白鼠单价高达万元以上,部分品系毛利率更是高达95% 左右。 随后一条「如何看待南大教授靠卖基因敲除小鼠,一只11723元,年赚近4亿」的讨论登上知乎热榜。 图片来源:知乎 作为天坑专业之首的生物,一直以来在大家的印象里总是和辛苦,清贫,回报周期长的标签挂钩
作为实验动物中的最为炙手可热的一员,小鼠在人们认识生命现象了解相应机理过程中发挥了无可替代的作用,在基础医学研究领域内更是拥有无与伦比的地位。那么,这群拉丁名为 Musmusculus 的小动物是如何从最初的 home mouse 演变为 laboratory mouse,成为实验动物界的制霸呢? 故事需要追溯到 100 多年前。1900 年,尘封 30 多年的 Mendel 遗传定律被来自欧洲几个科学家 deVries, Correns,Tschermark 重新发现,使得生
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