脾脏
淋巴细胞生成
骨髓
免疫系统
内分泌学
B细胞
淋巴细胞
氧化应激
内科学
祖细胞
睡眠剥夺
造血
生物
免疫学
干细胞
医学
抗体
昼夜节律
细胞生物学
作者
Lisandro Lungato,Amanda Nogueira-Pedro,Carolina Dias,Edgar Julian Paredes-Gamero,Sergio Tufik,Vânia D'Almeida
摘要
B lymphocytes are immune cells crucial for the maintenance and viability of the humoral response. Sleep is an essential event for the maintenance and integrity of all systems, including the immune system (IS). Thus, sleep deprivation (SD) causes problems in metabolism and homeostasis in many cell systems, including the IS. In this study, our goal was to determine changes in B lymphocytes from the bone marrow (BM) and spleen after SD. Three-month-old male Swiss mice were used. These mice were sleep deprived through the modified multiple platform method for different periods (24, 48, and 72 h), whereas another group was allowed to sleep for 24 h after 72 h of SD (rebound group) and a third group was allowed to sleep normally during the entire experiment. After this, the spleen and BM were collected, and cell analyses were performed. The numbers of B lymphocytes in the BM and spleen were reduced by SD. Additionally, reductions in the percentage of lymphocyte progenitors and their ability to form colonies were observed. Moreover, an increase in the death of B lymphocytes from the BM and spleen was associated with an increase in oxidative stress indicators, such as DCFH-DA, CAT, and mitochondrial SOD. Rebound was not able to reverse most of the alterations elicited by SD. The reduction in B lymphocytes and their progenitors by cell death, with a concomitant increase in oxidative stress, showed that SD promoted a failure in B lymphopoiesis.
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