移植后持续性淋巴缺血:增加死亡率和降低平静机制
Yun Liang1, Byron Smith2, Walter Park3
1Department of Surgery, Mayo Clinic, Rochester, MN, United States.
Frontiers in immunology
|July 4, 2025
概括
移植后的持续性淋巴缺血是常见的,并且与较高的死亡率有关. 这种情况可能源于免疫细胞调节受损,这表明它可能是患者护理的关键生物标志物.
科学领域:
- 免疫学 免疫学 免疫学
- 移植医学 移植医学
- 临床研究 临床研究
背景情况:
- 接受脏移植的人经常经历临时的淋巴缺血,原因是免疫抑制疗法,如阿勒姆图祖马布和子抗胆小细胞球蛋白 (rATG).
- 持续性淋巴缺血,移植后持续多年,尚未得到充分研究,因此需要对其流行率,影响和潜在机制进行研究.
研究的目的:
- 为了确定移植接受者的持续性淋巴缺血的患病率.
- 评估持续性淋巴缺血和死亡风险之间的关联.
- 研究可能导致移植后长期淋巴缺血的机制.
主要方法:
- 在7307名成年脏移植接受者 (2006-2020) 中,对外周血液淋巴细胞和白细胞计数的回顾性分析.
- 移植后3年与淋巴缺血相关的风险因素和死亡率的统计评估.
- 大量细胞计免疫类型定型用于分析与淋巴细胞计数相关的免疫细胞子集和表达标记物.
主要成果:
- 在移植3年后的31%接受者中,淋巴细胞数量仍然低于正常水平,比移植前的水平显著增加.
- 3年后淋巴缺血的严重程度增加与死亡风险更高相关.
- 关键的风险因素包括用阿勒姆图祖马布或rATG诱导/排斥治疗,接受者的年龄较大,移植前透析和以前的移植.
- 免疫类型检测显示B细胞,NK细胞和T细胞子集 (先天性,记忆,TSCM,最近的胸膜移民) 的减少,表明免疫细胞平衡受损.
- 在T细胞和B细胞上观察到PD-1表达的升高,包括特定的子集,在淋巴细胞数量较低的患者中.
结论:
- 移植患者的持续性淋巴缺血可能是由于影响T,B和NK细胞的恒温机制受损的结果.
- 持续性淋巴缺血症可以作为个性化患者管理和风险分层的宝贵生物标志物.
相关概念视频
01:16Kidney Transplant III: Nursing Management
84
Postoperative Nursing Management for Kidney Transplant PatientsPostoperative nursing management care includes monitoring the surgical site, encouraging early movement, and promoting lung health through breathing exercises. Nurses also administer prescribed medications like H2-blockers, such as famotidine, or proton pump inhibitors, like omeprazole, to help prevent gastrointestinal ulcers and bleeding. Fungal infections in the mouth and bladder can result from immunosuppressive and antibiotic...
84
01:40Cell-mediated Immune Responses
73.5K
Overview
73.5K
01:28Kidney Transplant I: Introduction
64
A kidney transplant is a surgical approach that involves replacing a non-functioning kidney with a healthy one from a donor. This procedure is often a treatment option for end-stage renal disease (ESRD) patients. The method requires careful recipient selection, including evaluating various medical and psychosocial factors. These criteria vary between transplant centers but generally include assessments of the patient's overall health, adherence to medical recommendations, and lifestyle...
64
01:26Kidney Transplant II: Surgical Procedure
78
Preoperative ManagementThe primary goals of preoperative management in kidney transplantation are to optimize the patient’s metabolic state and prepare them for surgery through diet adjustments, necessary dialysis, and tailored medical treatment. This phase also involves comprehensive infection screening and patient education about the surgical procedure and postoperative care to improve outcomes and adherence.Medical ManagementA comprehensive evaluation is required for both the living...
78
01:24Nephrotic Syndrome I : Introduction
31
Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of...
31
01:29Pulmonary Tuberculosis I
331
Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
331