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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。其中含药气溶胶雾化是其关键质量属性,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,通过该递送装置可以将精确定量的液体供试品给到鼠的鼻腔。

部分用户案例:
军事医学科学院生物工程研究所、毒物药物研究所、吉林大学艾滋病疫苗国家工程实验室、四川大学、哈佛大学、澳门大学、海尔施生物医药等
性能特点:
元森凯德大小鼠鼻腔内给药器,单次雾化给药精度≤0.5ul
精确定量,易于操作
较鼻腔滴注在鼻腔中分布更均匀
直达鼻腔、更易沉积于鼻腔深部及嗅区
更安全的提供高浓度
可递送药物溶液、均质悬浮液、小细胞悬浮液,粘度较低的乳液等
应用范围:
①鼻-脑靶向递送研究 ②药剂学与鼻用制剂开发 ③药理毒理学与非临床安全性评价 ④黏膜免疫与鼻腔疫苗研究 ⑤基础生物递送机制研究等
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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
人为什么会打喷嚏?刘琴课题组 Cell 发文揭露喷嚏反射神经机制
出现明显的喷嚏模式,主要表现为强迫及骤发式呼气。而此前被报道在喷嚏反射中起到关键作用的前筛神经(anterior ethmoidal nerve,AEN),在这些喷嚏式特征发生时也表现出了明显的激活。AEN 与鼻腔反映同时也伴随着与人类喷嚏相似的横膈膜及腹外斜肌变化。这些数据都表明辣椒素与组织胺能够有效在小鼠中诱导喷嚏反射。 图片来源:Cell 建立了小鼠喷嚏模型后,作者探究了是哪种感觉神经元调控喷嚏反射。 作为感觉神经元的两大分类,研究团队首先将目光锁定在了大直径神经元与小直径神经元的区分。由于辣椒
加入适量红细胞裂解液裂解红细胞(可加入 500 μL 1× 红细胞裂解液重悬细胞,室温裂解 2 min 后,立马加入 10 mL PBS,300 g 离心 5 min 后弃上清)。 若提取的腹腔巨噬细胞需培养,请注意无菌操作。 收集腹水时,从小鼠左侧(肠道较多)注射 PBS,从右侧(器脏较大)抽腹腔灌洗液,注意不要扎到器脏。 小鼠腹腔灌洗液收集细胞比较脆弱,加细胞染色缓冲液有利于细胞的保存,但建议当天及时检测。 小鼠腹腔灌洗液中大多数为巨噬细胞,巨噬细胞检测需要封闭Fc受体,此时可使用小鼠 CD16/32纯
感染新冠后为什么会眼睛痛?Nature 子刊揭示新冠病毒会引起视网膜炎症、影响深度知觉
眼睛和大脑 为了研究 SARS-CoV-2 感染大脑和眼部的传播途径,研究人员使用了不同的接种方式感染小鼠(IN:鼻腔感染,IT:支气管感染,IC:脑内注射感染,ED:眼睛感染,IV:尾静脉注射)。通过不同的接种途径,他们发现在小鼠模型中 SARS-CoV2 通过三叉神经(TN)和视神经(ON)的神经入侵来感染眼睛和大脑,而眼部感染并不会引起中枢感染和肺部感染。 图片来源:Nature Communications 总结 综上所述,该研究中发现在小鼠模型中,SARS-CoV-2 可以通过三叉
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