Results 51 to 60 of about 6,275 (172)

Complement activation by heparin-protamine complexes during cardiopulmonary bypass: Effect of C4A null allele [PDF]

The Journal of Thoracic and Cardiovascular Surgery, 1997
The first objective was to determine the effect of inherited differences in the classic pathway complement protein C4 on complement activation by heparin-protamine complexes in cardiac surgery. Specifically, we hypothesized that patients with heterozygous C4A null phenotype (A0BB), who have decreased amounts of C4A, may have increased complement ...
Shastri, Kaushik A., Logue, Gerald L., Stern, Mont P., Rehman, Saif, Raza, Syed   +4 more
openaire   +2 more sources

Structure and Mechanism of PhdC, a Prenylated‐Flavin Maturase

Proteins: Structure, Function, and Bioinformatics, EarlyView.
ABSTRACT Prenylated flavin mononucleotide (prFMN) is a modified flavin cofactor required by the UbiD family of (de)carboxylase enzymes. While the reduced prFMNH2 form is produced by the flavin prenyltransferase UbiX, the corresponding two‐electron oxidized prFMNiminium form is required to support UbiD catalysis. Thus, oxidative maturation of prFMNH2 is
Dominic R. Whittall, Henry G. Box, Karl A. P. Payne, Stephen A. Marshall, David Leys   +4 more
wiley   +1 more source

C5a-C5aR1 Axis Activation Drives Envenomation Immunopathology by the Snake Naja annulifera

Frontiers in Immunology, 2021
Systemic complement activation drives a plethora of pathological conditions, but its role in snake envenoming remains obscure. Here, we explored complement’s contribution to the physiopathogenesis of Naja annulifera envenomation.
Felipe Silva de França, Isadora Maria Villas-Boas, Bruno Cogliati, Trent M. Woodruff, Edimara da Silva Reis, John D. Lambris, Denise V. Tambourgi   +6 more
doaj   +1 more source

Mannan-binding lectin and complement C4A in Icelandic multicase families with systemic lupus erythematosus [PDF]

Annals of the Rheumatic Diseases, 2006
To determine whether low mannan-binding lectin (MBL) and C4A null alleles (C4AQ0) are associated with systemic lupus erythematosus (SLE) in multicase families with SLE.Low MBL level was determined by measuring serum levels and by genotyping for mutant structural (B/C/D, designated as 0) and promoter (LX) alleles (by real-time polymerase chain reaction).
S, Saevarsdottir, H, Kristjansdottir, G, Grondal, T, Vikingsdottir, K, Steinsson, H, Valdimarsson   +5 more
openaire   +2 more sources

Role for Complement C5 in Eosinophilic Inflammation of Severe Asthma

Allergy, EarlyView.
Complement activation module, particularly C5, is positively associated with eosinophilic inflammation in severe asthma cohorts. Elevated C5 expression correlates with poor lung function improvement and persistent eosinophilic inflammation. Mouse model studies confirm that C5 exacerbates eosinophilic inflammation, highlighting its potential as a ...
Cong Dong, Shaohua Lu, Zhenan Deng, Xuliang Cai, Huahao Shen, Guochao Shi, Changxing Ou, Zuofu Peng, Wei Jiang, Xiuhua Fu, Changzheng Wang, Meiling Jin, Zhongmin Qiu, Xiaoyang Wei, Wei Gu, Kewu Huang, Qiang Li, Xiangyan Zhang, Nanshan Zhong, Kian Fan Chung, Qingling Zhang, on behalf of C‐BIOPRED Consortium, Jiangtao Lin, Yongming Zhang, Nan Su, Xiaoyan Zhang, Qing Zhao, Ying Nong, Ping Chen, Tianyi Zhu, Binbin Ji, Yan Wang, Haitao Zhao, Jinbao Wang, Zhiyuan Zhang, Xiaona Yang, Chunhua Wei, Jing Han, Nong Yu, Qiang Li, Zhifu Yang, Yanhong Liu, Guohua Li, Huadong Guan, Shuping Zhang, Xiuhua Fu, Lihong Wang, Lingxin Meng, Zhenting Sun, Guangqin Cao, Lei Zhao, Kewu Huang, Hong Zhang, Wen Wang, Li An, Yangyu Chen, Yanli Gao, Xiaoxia Liu, Huifen Zhai, Fang Lin, Zhaohui Zhong, Zhongguang Wen, Yan Xiao, Jian Kang, Linfei Kong, Xinming Su, Xue Yan, Dijia Zhou, Huaping Tang, Wei Han, Yi Shu, Tintian Li, Lixin Xie, Hong Hu, Bo Liu, Yuzhu Li, Longmei Fan, Yue Zhang, Shifeng Zhao, Xiaofang Liu, Yuhong Wang, Xichun Zhang, Xinmao Wang, Pen Bai, Guangfa Wang, Yan Hu, Zhanwei Hu, Ju Cao, Bei He, Rui Wu, Xiaoyan Gai, Hong Zhu, Zhihai Han, Jiyi Meng, Wei Chen, Li Ma, Zhenqian Liu, Chunyang Zhang, Yan Zhang, Huahao Shen, Fugui Yan, Bin Shen, Xinghong Wang, Hao Zhang, Yinghua Yin, Jinkai Liu, Yanxiong Mao, Mao Huang, Xin Yao, Mao Huang, Ji Zhou, Zhenzhen Wu, Ping Yan, Yujie Zhang, Xinling Yang, Ningfei Ji, Fan Fei, Wanzhen Fu, Yi Yang, Yuting Shi, Wangjian Cha, Guochao Shi, Min Zhou, Wei Tang, Wei Chen, Jun Zhou, Wenjie Yang, Lei Zhu, Meiling Jin, Liping Xue, Li Li, Chun Li, Yin Gong, Qiang Li, Guogang Xie, Luhong Bao, Wuping Bao, Nianyun Li, Fengming Ding, Min Zhang, Zhongmin Qiu, Li Yu, Jungang Xie, Lingling Yi, Xianghuai Xu, Qiang Chen, Junjun Tang, Jinfu Xu, Xiaobing Ji, Jingyun Shi, Bo Su, Xiaojun Yang, Jiuwen Bai, Shuo Liang, Kebing Cheng, Wei Gu, Jiyong Ma, Yun Liu, Jun Ren, Shan Mao, Qingling Zhang, Baoqing Sun, Jiaxing Xie, Rihuang Qiu, Zhiqiang Wang, Peiyan Zhen, Wenting Luo, Changgao Zhong, Wei Luo, Yanqing Xie, Xinxin Yu, Wenting Yu, Wei He, Changzheng Wang, Qianli Ma, Min Wan, Mingzhou Zhang, Haining Li, Shaoxi Cai, Haijin Zhao, Yanmei Ye, Fang Zhou, Laiyu Liu, Guohua Huang, Jianpeng Liang, Jianping Zhao, Jungang Xie, Qiongjie Hu, Kaiyan Li, Wang Ni, Guohua Zheng, Weining Xiong, Lingling Yi, Xihu Du, Yunhui Zhang, Zhi Li, Xiaoqiong Tan, Feng Liao, Shenglan Wang, Yijiang Huang, Xinjun Cai, Kai Liu, Shaojing Sheng, Yihui Fu, Shenghua Sun, Qiang Zhang, Jinweng Cai, Ye Ling, Pin Chen, Hong Luo, Lv Liu, Zhijun Liu, Yuling Tang, Yusheng Yan, Guiyan Mo, Long Wen, Yinqun Zhu, Du Fan   +217 more
wiley   +1 more source

Type I and II Interferons Drive Abacavir Hypersensitivity via Treg Suppression and T‐Cell Enhancement in Immunocompetent HLA‐Transgenic Mice

Allergy, EarlyView.
Upregulated HLA‐B*57:01 expression in Tg/KO mice amplifies abacavir‐specific CD8+ T‐cell activation, driven by enhanced antigen presentation. Abacavir treatment induces robust pDC expansion and IFN‐α production, which selectively suppresses memory Treg populations.
SuJin Hwang, Telly Sepahpour, Stephanie Kortchak, Kirthiram Krishnaveni Sivakumar, Spyros Karaiskos, Ngoc Pham, Yura Jang, Montserrat Puig, Michael Norcross   +8 more
wiley   +1 more source

Effect of Vibrio-Derived Extracellular Protease vEP-45 on the Blood Complement System

Biology, 2021
Vibrio vulnificus is a pathogenic bacterium that can causes wound infections and fetal septicemia. We have reported that V. vulnificus ATCC29307 produces an extracellular zinc-metalloprotease (named vEP-45).
So Hyun Kwon, Jung Eun Park, Yeong Hee Cho, Jung Sup Lee   +3 more
doaj   +1 more source

Heterogeneity in the structural basis of the human complement C4A null allele (C4A*Q0) as revealed by HindIII restriction fragment length polymorphism analysis [PDF]

FEBS Letters, 1987
The highly polymorphic fourth component of human complement (C4) is usually encoded by two genes, C4A and C4B, adjacent to the 21‐hydroxylase (21‐OH) genes, 21‐OHA and 21‐OHB, and is also remarkable in the high frequency of the ‘null’ alleles, C4A*Q0 and C4B*Q0.
Uring-Lambert, Béatrice, Vegnaduzzi, Nathalie, Carroll, Michael C., Tongio, Marie-Marthe, Goetz, Joëlle, Hauptmann, Georges   +5 more
openaire   +2 more sources

Inflammatory and Immunological Basis of Periodontal Diseases

Journal of Periodontal Research, EarlyView.
The periodontal lesion emerges as an evolving immunological battlefield, where host–microbiome interactions, dysregulated immune responses, fragile resolution mechanisms, and inflammophilic dysbiosis converge to shift the balance from homeostasis to unrestrained tissue destruction.
Giacomo Baima, Marion Arce, Mario Romandini, Thomas Van Dyke   +3 more
wiley   +1 more source

Immune involvement in neuropsychiatric disorders: Insights from single‐cell transcriptomic studies

Psychiatry and Clinical Neurosciences, EarlyView.
Neuropsychiatric disorders pose profound challenges to both research and treatment, largely due to their clinical heterogeneity and the limited understanding of their underlying biological mechanisms. While bulk RNA sequencing (bulk RNA‐seq) has been widely used to study gene expression, it cannot resolve cell‐type‐specific signals or detect rare ...
Tsutomu Takeda, Michihiro Toritsuka, Hiroto Tamakoshi, Nakao Iwata, Manabu Makinodan   +4 more
wiley   +1 more source