Javier Ganz,1,2,3,8,9 Lovelace J. Luquette,4,8 Sara Bizzotto,1,2,3,5,8 Michael B. Miller,1,3,6 Zinan Zhou,1,2,3 Craig L. Bohrson,4
Hu Jin,4 Antuan V. Tran,4 Vinayak V. Viswanadham,4 Gannon McDonough,6 Katherine Brown,6 Yasmine Chahine,1
Brian Chhouk,1 Alon Galor,4 Peter J. Park,4,7,* and Christopher A. Walsh1,2,3,10,*
1 Division of Genetics and Genomics, Manton Center for Orphan Disease Research, Department of Pediatrics, and Howard Hughes Medical Institute, Boston Childrens Hospital, Boston, MA 02115, USA
2 Departments of Pediatrics and Neurology, Harvard Medical School, Boston, MA 02115, USA
3 Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
4 Department of Biomedical Informatics, Harvard Medical School, Boston, MA 02115, USA
5 Sorbonne Universite´ , Institut du Cerveau (Paris Brain Institute) ICM, Inserm, CNRS, Hoˆ pital de la Pitie´ Salpeˆ trie`re, 75013 Paris, France
6 Department of Pathology, Brigham and Womens Hospital, Harvard Medical School, Boston, MA 02115, USA
7 Division of Genetics, Brigham and Womens Hospital, Boston, MA 02115, USA
8 These authors contributed equally
9 Present address: Merck Research Laboratories, Cambridge, MA 02142, USA
10 Lead contact
*Correspondence: 该Email地址已收到反垃圾邮件插件保护。要显示它您需要在浏览器中启用JavaScript。 (P.J.P.), 该Email地址已收到反垃圾邮件插件保护。要显示它您需要在浏览器中启用JavaScript。 (C.A.W.)
https://doi.org/10.1016/j.cell.2024.02.025
SUMMARY
Characterizing somatic mutations in the brain is important for disentangling the complex mechanisms of aging, yet little is known about mutational patterns in different brain cell types. Here, we performed wholegenome sequencing (WGS) of 86 single oligodendrocytes, 20 mixed glia, and 56 single neurons from neurotypical individuals spanning 0.4–104 years of age and identified >92,000 somatic single-nucleotide variants (sSNVs) and small insertions/deletions (indels). Although both cell types accumulate somatic mutations linearly with age, oligodendrocytes accumulated sSNVs 81% faster than neurons and indels 28% slower than neurons. Correlation of mutations with single-nucleus RNA profiles and chromatin accessibility from the same brains revealed that oligodendrocyte mutations are enriched in inactive genomic regions and are distributed across the genome similarly to mutations in brain cancers. In contrast, neuronal mutations are enriched in open, transcriptionally active chromatin. These stark differences suggest an assortment of active mutagenic processes in oligodendrocytes and neurons.
an Yang1 Xinyuan Zhang2 Hua Wang1 Miao Guo1 Jinlong Zhang1 Xuejiao Feng3 Jiayi Yu3 Jiahui Yang3 Jinjin Zhu4 Yiyu Wang3
1 Research & Development Center, Mageline Biology Tech Co., Ltd, Wuhan, Hubei, China
2 Shanghai Skinshield Clinical Testing and Technological Research Ltd., Shanghai, China
3 Department of Dermatology, Air Force Medical Center, PLA, Beijing, China
4 Department of Dermatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, China
Correspondence
Jinjin Zhu, Department of Dermatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, 430022, China.
Email: 该Email地址已收到反垃圾邮件插件保护。要显示它您需要在浏览器中启用JavaScript。
Yiyu Wang, Department of Dermatology, Air Force Medical Center, PLA, Beijing, China.
Abstract
Background: The delicate periorbital region is susceptible to skin dehydration, wrinkles, and loss of elasticity. Thus, targeted and effective anti-aging interventions are necessary for the periorbital area.
Aim: To evaluate the efficacy and safety of a new anti-aging eye cream formulated with the active complex (Yeast/rice fermentation filtrate, N-acetylneuraminic acid, palmityl tripeptide-1, and palmitoyl tetrapeptide-7).
Methods: The cell viability and expressions of key extracellular matrix (ECM) components of the active complex were evaluated using a human skin fibroblast model. In the 12-week clinical trial, skin hydration, elasticity, facial photographs, and collagen density following eye cream application were assessed using Corneometer, Cutometer, VISIA, and ultrasound device, respectively. Dermatologists and participants evaluated clinical efficacy and safety at baseline, and after 4, 8, and 12 weeks.
Results: PCR and immunofluorescent analyses revealed that the active complex significantly stimulated fibroblast proliferation (p < 0.05) and markedly promote the synthesis of collagen and elastin. Clinical findings exhibited a substantial enhancement in skin hydration (28.12%), elasticity (18.81%), and collagen production (54.99%) following 12 weeks of eye cream application. Dermatological evaluations and participants’ assessments reported a significant improvement in skin moisture, roughness, elasticity, as well as fine lines and wrinkles by week 8.
Conclusion: The new anti-aging eye cream, enriched with the active complex, demonstrates comprehensive rejuvenating effects, effectively addressing aging concerns in the periorbital area, coupled with a high safety profile.
KEYWORDS
anti-aging, collagen, elastin, extracellular matrix, eye cream, wrinkle
原创： 十六点五 中山二院糖尿病足中心
含银的敷料是目前治疗糖尿病足的主流敷料，有各种剂型，包括泡沫状、胶冻态、液态、粉末态、膏态等等，生产的厂家的非常多，其中的质量良莠不齐，很难鉴别。
进一步的清创就到了骨骼，对于骨髓炎最彻底的治疗方法就是去除被细菌侵袭的骨，正常的骨骼一般是浅黄色，如果发白或者变黑，往往就提示这段骨头可能活性比较差，另外，还有一种是面积比较大的骨暴露，一般的肉芽组织很难爬上去，因此，对于坏死的骨头及较大面积的骨暴露，一般需要清除。
皮下组织中的脂肪组织在足部分布广泛，而皮下脂肪中血管分布非常少，在相对或绝对缺血的糖尿病足中，脂肪组织边缘的是否出血不是其是否存活的可靠指标。
这是一个我们在《糖尿病足切开设计（1）》中提到过，这次从不同角度谈谈足趾的保全。
大趾是足部最重要的结构，如果被切除，对足部的功能会有比较大的影响，因此，应该尽可能的保存。
感染的足趾是比较常见的一种糖尿病足表现形式，能否保全足趾是一个比较有技巧的工作，现举例说明
伤口世界平台生态圈，以“关爱人间所有伤口患者”为愿景，连接、整合和拓展线上和线下的管理慢性伤口的资源，倡导远程、就近和居家管理慢性伤口，解决伤口专家的碎片化时间的价值创造、诊疗经验的裂变复制、和患者的就近、居家和低成本管理慢性伤口的问题。
2019广东省医疗行业协会伤口管理分会年会
扫一扫了解详情:
任何关于疾病的建议都不能替代执业医师的面对面诊断。所有门诊时间仅供参考，最终以医院当日公布为准。
网友、医生言论仅代表其个人观点，不代表本站同意其说法，请谨慎参阅，本站不承担由此引起的法律责任。
