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相关概念视频

Antiprotozoal Agents01:21

Antiprotozoal Agents

Leishmaniasis is a widespread parasitic disease caused by several Leishmania species. It affects millions of people each year and remains a major public health problem in endemic regions. First-line treatment relies on pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate. Even so, how these drugs work has not been fully clear, especially their interaction with parasite-specific biochemical pathways. One key target is trypanothione reductase (TR), an enzyme that...
American Trypanosomiasis01:22

American Trypanosomiasis

Chagas disease, or American trypanosomiasis, is a vector-borne parasitic infection caused by Trypanosoma cruzi, a flagellated protozoan (kinetoplastid) of the family Trypanosomatidae. The disease is endemic in Latin America, although cases are increasingly reported worldwide due to human migration. Transmission most commonly occurs when feces of infected triatomine bugs contaminate bite wounds or mucosal surfaces; additional routes include congenital, transfusional, transplant-related, and oral...
Toxoplasmosis01:28

Toxoplasmosis

Toxoplasmosis, a zoonotic disease caused by the protozoan Toxoplasma gondii, poses significant public health challenges globally due to its high seroprevalence and varied clinical manifestations. As an obligate intracellular parasite, T. gondii can infect all warm-blooded vertebrates, but felids are its only definitive hosts, shedding unsporulated oocysts into the environment. Humans typically acquire the infection through ingestion of tissue cysts in undercooked meat or oocysts from...
Malaria01:29

Malaria

Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...
Leishmaniasis01:30

Leishmaniasis

Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...
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Fungal Phylum Microsporidia

Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...

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卡拉阿扎尔后皮肤雷什曼病 (PKDL),一个全球概述.

Chaitali Ghosh1, Chaitali Karmakar1, Deblina Sarkar1

  • 1Department of Pharmacology Institute of Postgraduate Medical Education and Research, 244B Acharya JC Bose Road, Kolkata, India.

Clinical and experimental dermatology
|January 8, 2026
PubMed
概括

卡拉阿扎尔后皮肤雷什曼病 (PKDL) 是内脏雷什曼病 (VL) 治疗后的一种持续性皮肤并发症. 解决PKDL需要综合诊断,免疫学和社区战略来消除Kala-Azar.

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科学领域:

  • 皮肤病学 皮肤病学
  • 传染性疾病 传染性疾病
  • 免疫学 免疫学 免疫学

背景情况:

  • 卡拉-阿扎尔后皮肤雷什曼病 (PKDL) 是一种慢性皮肤后果,发生在为内脏雷什曼病 (VL) 治疗的患者身上.
  • 在南亚,PKDL构成了重大流行病学挑战,作为Leishmania donovani的储存库,并维持VL传播.
  • 风险因素包括先前的VL,免疫抑制,宿主遗传学,营养不良和因耻辱和不良健康寻求行为而延迟诊断.

研究的目的:

  • 审查PKDL的流行病学挑战,诊断困难和治疗障碍.
  • 突出免疫学方面和分子工具在PKDL诊断中的作用.
  • 强调对消除PKDL和持续控制VL的综合战略的需要.

主要方法:

  • 文献综述和对PKDL当前知识的综合.
  • 对诊断挑战的分析,包括分子工具.
  • 评估治疗管理及其局限性.

主要成果:

  • 由于寄生虫负担较低,PKDL呈现为斑点或多态形式,在早期或斑点阶段存在诊断挑战.
  • 这种疾病涉及混合的Th1/Th2免疫反应与显著的细胞透.
  • 目前的治疗方法受到延长的持续时间,复发风险,耐药性和不良合规性等因素的阻碍.

结论:

  • 分子诊断为PKDL检测提供了更好的灵敏度和现场适用性.
  • 了解免疫学特征对于管理PKDL至关重要.
  • 结合分子诊断,免疫学见解和社区治疗的综合策略对于消除PKDL和整体Kala-Azar控制工作至关重要.