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流行病学和临床实践证明,营养不良与感染疾病相联系,近十年的研究确认,营养不足对宿主免疫应答有损害,使特异性与非特异性、细胞和体液免疫两者均受损伤,可能与营养不良患者由微生物引起的疾病的发病率和严重性有因果关系。如果营养不良发生在关键的免疫力形成的早期阶段,有害作用则可延长,甚至成为永久性的。一、营养不良时的免疫学改变胸腺及其淋巴组织对营养不足的反应要比大多数其他组织快得多。蛋白质-热能营养不良导致胸腺显著的组织形态学改变:包括大小和重量的减少、淋巴细胞的减少、皮髓质分化
Epidemiology and clinical practice have proved that malnutrition is linked to infectious diseases and nearly a decade of research has confirmed that undernutrition compromises host immune responses and makes both specific and nonspecific, both cellular and humoral immunity impaired, possibly There is a causal relationship between the incidence and the severity of diseases caused by microorganisms in malnourished patients. If malnutrition occurs at an early stage of critical immune system development, detrimental effects can be prolonged or even become permanent. First, immunological changes in malnutrition Thymus and its lymphoid tissue reaction to malnutrition much faster than most other tissues. Proteins - Thermal malnutrition causes significant changes in the morphology of the thymus: including reduction in size and weight, reduction in lymphocytes, differentiation of the corticomedullary