摘要:Hearing impairment has become one of the most common sensory disabilities. The World Health Organization (WHO) estimates that 466 million people were living with disabling hearing loss in 2018, and that number could rise to 900 million by 2050. Conductive hearing loss, which predominantly involves the sound-transmitting route of the outer and middle ear, has been well handled by antibiotics and surgery. However, sensorineural hearing loss, which involves the inner ear and structures further within the auditory pathway, has very limited biological treatment options (current treatment options include only hearing amplification and cochlear implants). Part of the reason for the paucity of therapeutics is due to the complexity of the auditory system and the limited regenerative ability of the hearing sensory cells, hair cells, and connected nerve.
Yang Wang,Li Gong,Yan-ping Wu,Zhi-wen Cui,Yong-qiang Wang,Yi Huang,Xiao-ping Zhang,Wei-fen Li
2019, 20(2): 180-192. DOI: 10.1631/jzus.B1800022
摘要:目的探究新生仔猪口服鼠李糖乳杆菌GG对肠道屏障功能的影响.创新点新生仔猪早期口服鼠李糖乳杆菌GG可明显改善其断奶前肠道菌群结构及免疫屏障功能.方法二十四头新生仔猪分为对照组和实验组:对照组仔猪在出生后第1、3、5天口服2 mL 0.1 g/mL 的脱脂牛奶;而实验组仔猪口服等体积的含有活鼠李糖乳杆菌GG的脱脂牛奶.饲喂25天后,收集仔猪血清、肠道粘膜和盲肠内容物等样品.通过分析肠道菌群、紧密连接蛋白和细胞因子等指标,评价鼠李糖乳杆菌对肠道屏障功能的影响.结论在正常生理条件下,新生仔猪口服鼠李糖乳杆菌GG可明显改变肠道菌群结构.此外,鼠李糖乳杆菌GG还可增加仔猪肠道的通透性,并通过调控抗菌肽、细胞因子和趋化因子的分泌以改善肠道的免疫屏障功能.