IMMUNOLOGICAL ALTERATIONS IN CHRONIC RENAL FAILURE

ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-12 204 SURUNKALI BUYRAK YETISHMOVCHILIGIDA IMMUNOLOGIK O‘ZGARISHLAR Toshkent Tibbiyot Universiteti Termiz filiali “Ichki kasalliklar, xarbiy dala terapiyasi, gematologiya va oilaviy shifokorlikda terapiya kafedrasi” assistentlari: Berdiyeva Rano Sultonovna, Norqulov Zokir Urolovich Annotatsiya. Ushbu maqolada surunkali buyrak yetishmovchiligi jarayonida organizm immun tizimida yuzaga keladigan asosiy o‘zgarishlar, ularning patogenetik mexanizmlari, klinik oqibatlari va terapevtik yondashuvlar yoritiladi. Surunkali buyrak yetishmovchiligida uremik toksinlarning to‘planishi, metabolik buzilishlar va dializ jarayonlarining o‘zi tug‘ma hamda orttirilgan immunitet bo‘g‘inlarining chuqur izdan chiqishiga sabab bo‘ladi. Ushbu immunologik disfunksiya infeksiyalar sonining ortishi, doimiy yallig‘lanish holatining shakllanishi, aterosklerozning tez rivojlanishi va vaksinalarga past immun javob bilan namoyon bo‘ladi. Mazkur maqola surunkali buyrak yetishmovchiligida immun tizim o‘zgarishlarini tizimli tahlil etishni, hamda zamonaviy ilmiy ma’lumotlar asosida ularni boshqarish strategiyalarini bayon etadi. Kalit so‘zlar. Surunkali buyrak yetishmovchiligi, immunitet, uremik toksinlar, yallig‘lanish, limfotsitlar, dializ. Иммунологические изменения при хронической почечной недостаточности Ассистенты кафедры «Внутренние болезни, военная полечевая терапия, гематология и терапия в семейной медицине» Термезского филиала Ташкентского медицинского университета: Бердиева Рано Султoновна, Норкулов Зoкир Урoлович. Аннотация. В данной статье освещаются основные изменения, возникающие в иммунной системе организма при хронической почечной недостаточности, их патогенетические механизмы, клинические последствия и терапевтические подходы. При хронической почечной недостаточности накопление уремических токсинов, метаболические нарушения и сам процесс диализа приводят к выраженным расстройствам как врожденного, так и приобретённого звеньев иммунитета. Данная иммунологическая дисфункция проявляется повышением частоты инфекций, формированием хронического воспалительного состояния, ускоренным развитием атеросклероза и низким иммунным ответом на вакцины. Настоящая статья представляет собой системный анализ изменений иммунной системы при хронической почечной недостаточности и описывает стратегии их коррекции на основе современных научных данных. Ключевые слова: хроническая почечная недостаточность, иммунитет, уремические токсины, воспаление, лимфоциты, диализ. IMMUNOLOGICAL ALTERATIONS IN CHRONIC RENAL FAILURE Assistants of the Department of “Internal Diseases, Military Field Therapy, Hematology, and Therapy in Family Medicine” of the Termez Branch of Tashkent Medical University: Berdieva Rano Sultonovna, Norqulov Zokir Urolovich. Abstract. This article highlights the major alterations that occur in the body’s immune system in chronic renal failure, their pathogenetic mechanisms, clinical consequences, and therapeutic approaches. In chronic renal failure, the accumulation of uremic toxins, metabolic disturbances, and the dialysis process itself lead to significant dysfunctions of both the innate and adaptive branches of immunity. This immunological impairment manifests as an increased incidence of infections, the ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-12 205 development of a chronic inflammatory state, accelerated progression of atherosclerosis, and a reduced immune response to vaccines. The present article provides a systematic analysis of immune system changes in chronic renal failure and describes strategies for their correction based on current scientific data. Keywords: chronic renal failure, immunity, uremic toxins, inflammation, lymphocytes, dialysis. Objective of the study: The aim of the study is to investigate immunological changes in chronic renal failure. Relevance of the problem: Today, the number of patients suffering from this disease is steadily increasing. Early detection of the disease, the development of preventive and therapeutic methods, and reducing its prevalence remain highly relevant issues. Methods and materials: Chronic renal failure is a complex pathological process characterized by the gradual decline of the kidneys’ filtration, hormonal, and metabolic functions. This disease represents a pressing global health issue, and its effects on the immune system are among the most studied yet still remain complex and not fully understood. In chronic renal failure, not only do the functional capabilities of the kidneys decrease, but significant changes also occur in both the innate and adaptive branches of the immune system. These changes manifest as an increased susceptibility to infectious diseases, a weakened immune response to vaccines, and a state of persistent inflammation. The accumulation of uremic toxins lies at the center of the pathogenesis of chronic renal failure. These toxins disrupt the physiological mechanisms of immunity by affecting the proliferation, differentiation, and phagocytic activity of immune cells. In addition, the dialysis process introduces further changes through mechanical and biochemical factors that activate immunological reactions. Therefore, chronic renal failure should be considered not merely as a kidney disease, but as a systemic disorder accompanied by immune system dysfunction. Chronic renal failure is associated with impaired activity of neutrophils, macrophages, and the complement system, which constitute innate immunity. Neutrophil function is significantly impaired even in the early stages of chronic renal failure. They are unable to fully perform migration, tissue infiltration, phagocytosis, and oxidative burst functions. Such disturbances are linked to uremic toxins, oxidative stress, and the accumulation of metabolic products in the blood. Macrophages can remain preserved in number, but their functional activity changes. They overproduce inflammatory mediators, which intensifies a state of chronic inflammation. At the same time, their ability to present antigens decreases, hindering the proper formation of adaptive immune responses. The complement system also becomes imbalanced: some components become overactive, promoting inflammation, while others decrease, reducing effectiveness against infections. One of the most important immunological consequences of chronic kidney disease is the weakening of adaptive immunity. The number and activity of T-lymphocytes decrease, and their proliferation capacity is impaired. CD4+ helper T-cells are reduced, disrupting immune regulation. Due to the reduced number and function of T-regulatory cells, susceptibility to autoimmune reactions increases. Changes in B-lymphocyte function are also significant, with reduced immunoglobulin synthesis and lower quality of antibodies. This leads to a slower response to everyday infections and reduced effectiveness of vaccinations. Vaccines against hepatitis B, pneumococcus, and influenza often fail to provide full protection in patients with chronic kidney disease. ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-12 206 Uremic toxins play a central role in the immunological changes associated with chronic kidney disease. Indoxyl sulfate, p-cresyl sulfate, guanidine compounds, and other molecules affect immune cell membrane receptors, reducing their sensitivity and response capacity. They enhance lymphocyte apoptosis, impair mitochondrial functions, disrupt cytokine production, and increase oxidative stress. As a result, immune system efficiency declines, leading to impaired resistance to infections. The impact of chronic kidney disease on the immune system results in a range of clinical consequences. Primarily, patients experience an increased incidence of infectious diseases. Pneumonia, urinary tract infections, catheter-related infections, and viral hepatitis are particularly common in chronic kidney disease. Systemic inflammation exacerbates atherosclerosis, cardiovascular diseases, anemia, and bone tissue disorders. A weak immune response to vaccines reduces the effectiveness of preventive measures. In chronic kidney disease, approaches to mitigate immunological dysfunction include maximizing the removal of uremic toxins, improving dialysis quality, administering antioxidant therapy, and using anti-inflammatory modulators. It is also crucial for patients to receive timely and complete vaccinations, adhere strictly to hygiene measures, and ensure early detection and treatment of infections. Although kidney transplantation can partially restore immunological changes, post-transplant immunosuppressive therapy increases the risk of infections, making continuous monitoring essential for these patients. Conclusion. Chronic kidney disease induces profound and complex changes in all major components of the immune system. Uremic toxins, metabolic disturbances, and the dialysis process itself lead to significant dysfunction in both innate and adaptive immunity. This manifests as increased susceptibility to infections, the development of chronic inflammation, accelerated cardiovascular disease, and reduced vaccine responsiveness. Effective management of CKD requires early identification of immune system alterations, thorough investigation of these changes, and the application of appropriate therapeutic strategies. Therefore, correcting immunological imbalance is a critical aspect of CKD treatment. REFERENCES: 1. Stenvinkel, P. Inflammation in chronic kidney disease: the role of cytokines. Kidney International, 2022. 2. Mehta, R., & Cerdá, J. Immunological dysfunction in CKD. Nature Reviews Nephrology, 2023. 3. Kato, S., et al. Uremic toxins and immune dysfunction. Clinical and Experimental Nephrology, 2021. 4. Wang, X. Dialysis-related inflammation and its impact on immunity. Journal of Renal Care, 2018. 5. KDIGO Clinical Practice Guidelines for Chronic Kidney Disease, 2023.