With the development of novel treatments for autoimmune disorders, it has become a popular research focus which mesenchymal stem cells (MSCs) have the capacity to counteract with autoimmune diseases progression. One of the underlying mechanisms behind their activities is the release of extracellular vesicles especially exosomes. MSC-derived exosomes are hypoimmunogenic nanocarriers which contain numerous immunoregulatory factors and similar to other exosomes, are able to pass through boundaries like the blood-brain barrier (BBB). Accumulating evidence provided by animal studies has demonstrated that MSC-derived exosomes, as a novel therapy, can re-induce self-tolerance, without subsequent complications reported for other treatments. Therefore, therapeutic applications of MSC-derived exosomes are contributing to core advances in the field of autoimmune diseases. Here, we briefly describe the biological characteristics of MSC-derived exosomes and review the experimentally verified outcomes for autoimmune disease therapy purposes.

Immunotherapy is the standard of treatment for long-life relief of symptoms of allergic rhinitis. Vitamin D may affect the outcomes of treatment. This study evaluated the clinical efficacy of subcutaneous allergen immunotherapy in adult patients with allergic rhinitis based on the serum level of vitamin D. Patients with persistent allergic rhinitis and positivity for skin prick test were evaluated by Sino-nasal Outcome Test (SNOT-22) and Mini Rhinoconjunctivitis Quality of Life Questionnaire (MiniRQLQ) before subcutaneous allergen immunotherapy and during the maintenance phase to assess the relation of the serum level of vitamin D and the clinical efficacy of immunotherapy. After immunotherapy, the greatest reduction in SNOT-22 scores were reported in patients with vitamin D sufficiency (39.0 ± 9.2), followed by vitamin D suboptimal provision (35.1 ± 12.1), insufficiency (25.0 ± 7.5), and deficiency (18.3 ± 6.0) (P < 0.001). The MiniRQLQ reduction in patients with vitamin D sufficiency, suboptimal provision, insufficiency, or deficiency was 30.7 ± 8.7, 27.1 ± 8.7, 20.0 ± 8.6, or 17.4 ± 7.1, respectively (P < 0.001). Both of SNOT-22 and MiniRQLQ scores decreased significantly following immunotherapy in patients with different levels of vitamin D. However, these effects were more pronounced when the level of vitamin D was sufficient.
Adult ; Desensitization, Immunologic ; Humans ; Immunotherapy ; Quality of Life ; Rhinitis, Allergic ; Skin ; Treatment Outcome ; Vitamin D ; Vitamins

Purpose: Liver cirrhosis is a major cause of hospital admission and mortality among children. Understanding the factors that influence disease severity is essential for preventing and reducing mortality. This study explored the association between hemoglobin levels and liver disease severity in children with cirrhosis. Methods: This cross-sectional study included 326 children with cirrhosis admitted to Namazi Teaching Hospital between 2015 and 2020. Clinical data, Child–Turcotte–Pugh (CTP) scores, and pediatric end-stage liver disease/model for end-stage liver disease (PELD/MELD) scores were collected to assess disease severity. Anemia was defined based on age, sex, and hemoglobin levels. Results: Among the children with cirrhosis, 275 (84.4%) were anemic, with a mean age of 5.4±4.8 years. The overall mean hemoglobin level was 9.2±2.1 g/dL. A significant inverse correlation was observed between hemoglobin levels and CTP and PELD/MELD scores in children with anemia (p<0.001). Moreover, lower hemoglobin levels were associated with more higher CTP classes (p<0.001). Conclusion According to the data analysis, a significant correlation was observed between hemoglobin level and the severity of liver disease, and hemoglobin level decreased with increasing severity of liver disease. According to CTP class, the mean hemoglobin level decreased progressively as the disease progressed. A comparison of the mean CTP scores between children with and those without anemia revealed that those with anemia had more severe disease than those without anemia.

Purpose: Liver cirrhosis is a major cause of hospital admission and mortality among children. Understanding the factors that influence disease severity is essential for preventing and reducing mortality. This study explored the association between hemoglobin levels and liver disease severity in children with cirrhosis. Methods: This cross-sectional study included 326 children with cirrhosis admitted to Namazi Teaching Hospital between 2015 and 2020. Clinical data, Child–Turcotte–Pugh (CTP) scores, and pediatric end-stage liver disease/model for end-stage liver disease (PELD/MELD) scores were collected to assess disease severity. Anemia was defined based on age, sex, and hemoglobin levels. Results: Among the children with cirrhosis, 275 (84.4%) were anemic, with a mean age of 5.4±4.8 years. The overall mean hemoglobin level was 9.2±2.1 g/dL. A significant inverse correlation was observed between hemoglobin levels and CTP and PELD/MELD scores in children with anemia (p<0.001). Moreover, lower hemoglobin levels were associated with more higher CTP classes (p<0.001). Conclusion According to the data analysis, a significant correlation was observed between hemoglobin level and the severity of liver disease, and hemoglobin level decreased with increasing severity of liver disease. According to CTP class, the mean hemoglobin level decreased progressively as the disease progressed. A comparison of the mean CTP scores between children with and those without anemia revealed that those with anemia had more severe disease than those without anemia.

Purpose: Liver cirrhosis is a major cause of hospital admission and mortality among children. Understanding the factors that influence disease severity is essential for preventing and reducing mortality. This study explored the association between hemoglobin levels and liver disease severity in children with cirrhosis. Methods: This cross-sectional study included 326 children with cirrhosis admitted to Namazi Teaching Hospital between 2015 and 2020. Clinical data, Child–Turcotte–Pugh (CTP) scores, and pediatric end-stage liver disease/model for end-stage liver disease (PELD/MELD) scores were collected to assess disease severity. Anemia was defined based on age, sex, and hemoglobin levels. Results: Among the children with cirrhosis, 275 (84.4%) were anemic, with a mean age of 5.4±4.8 years. The overall mean hemoglobin level was 9.2±2.1 g/dL. A significant inverse correlation was observed between hemoglobin levels and CTP and PELD/MELD scores in children with anemia (p<0.001). Moreover, lower hemoglobin levels were associated with more higher CTP classes (p<0.001). Conclusion According to the data analysis, a significant correlation was observed between hemoglobin level and the severity of liver disease, and hemoglobin level decreased with increasing severity of liver disease. According to CTP class, the mean hemoglobin level decreased progressively as the disease progressed. A comparison of the mean CTP scores between children with and those without anemia revealed that those with anemia had more severe disease than those without anemia.

Purpose: Liver cirrhosis is a major cause of hospital admission and mortality among children. Understanding the factors that influence disease severity is essential for preventing and reducing mortality. This study explored the association between hemoglobin levels and liver disease severity in children with cirrhosis. Methods: This cross-sectional study included 326 children with cirrhosis admitted to Namazi Teaching Hospital between 2015 and 2020. Clinical data, Child–Turcotte–Pugh (CTP) scores, and pediatric end-stage liver disease/model for end-stage liver disease (PELD/MELD) scores were collected to assess disease severity. Anemia was defined based on age, sex, and hemoglobin levels. Results: Among the children with cirrhosis, 275 (84.4%) were anemic, with a mean age of 5.4±4.8 years. The overall mean hemoglobin level was 9.2±2.1 g/dL. A significant inverse correlation was observed between hemoglobin levels and CTP and PELD/MELD scores in children with anemia (p<0.001). Moreover, lower hemoglobin levels were associated with more higher CTP classes (p<0.001). Conclusion According to the data analysis, a significant correlation was observed between hemoglobin level and the severity of liver disease, and hemoglobin level decreased with increasing severity of liver disease. According to CTP class, the mean hemoglobin level decreased progressively as the disease progressed. A comparison of the mean CTP scores between children with and those without anemia revealed that those with anemia had more severe disease than those without anemia.