ElFeky Dalia Saad, Awad Alaa Reda, Shamseldeen Asmaa Mohammed, Mowafy Hagar Lotfy, Hosny Sara Adel
Department of Medical Microbiology and Immunology, Faculty of Medicine, Cairo University, Giza, Egypt.
Department of Physiology, Faculty of Medicine, Cairo University, Cairo, Egypt.
Front Microbiol. 2023 Jul 17;14:1222503. doi: 10.3389/fmicb.2023.1222503. eCollection 2023.
Vulvovaginal candidiasis (VVC) is a highly prevalent illness affecting women globally. Lactobacilli, which make up the majority of healthy vaginal microbiota (VMB), serve as a powerful barrier against infections. Probiotic therapy has been recommended for the treatment or prevention of VVC.
To compare the therapeutic effects of (B-2178) vs. (LA-5) on VVC in a rat model, particularly highlighting the immune response of the host vaginal epithelium.
In total, 30 female Sprague-Dawley rats were divided into 5 groups; Group 1: no intervention, Group 2: ovariectomy group, while animals in Groups 3-5 were subjected to ovariectomy and an intravaginal inoculation of to establish VVC. The animals in Groups 4 and 5 received intravaginal lactobacilli treatment with (LA-5) and (B-2178) strains, respectively, for 7 days. load was measured in a vaginal lavage 1, 3, and 7 days after the stoppage of the treatment. Histological, morphometric, and immunohistochemical studies of the vaginal tissues were done. IFN-γ, IL-4, and IL-17 were measured in the vaginal tissue.
Both and significantly reduced vaginal load (250 ± 77.46 and 133.33 ± 40.82 CFU/mL) compared to the count before treatment in both groups (4,850 ± 1419.51 and 4966.67 ± 852.45 CFU/mL) even after 7 days of stoppage of lactobacilli treatment. A statistically significant reduction of the pro-inflammatory cytokines IL-17 and IFN-γ was reported in both treated groups compared to the infected untreated group. has a significant effect on the reduction of hyphae formation of as well as the nuclear factor kappa B (NF-κB) immunostaining density of vaginal tissue compared to Moreover, treatment with significantly minimized the epithelium damage triggered by infection and restored normal vaginal architecture as evidenced by the histologic and morphometric studies when compared to
Through maintaining an immune tolerant state in the vaginal epithelium and ameliorating the undesirable uncontrolled inflammatory response in the vaginal tissue, (B-2178) has the potential to be utilized alone or in combination with other lactobacilli species in probiotic clinical trials to treat or prevent VVC.
外阴阴道念珠菌病(VVC)是一种在全球范围内影响女性的高度流行疾病。构成健康阴道微生物群(VMB)大部分的乳酸杆菌是抵御感染的强大屏障。益生菌疗法已被推荐用于治疗或预防VVC。
比较(B - 2178)与(LA - 5)对大鼠VVC模型的治疗效果,特别强调宿主阴道上皮的免疫反应。
总共30只雌性Sprague - Dawley大鼠分为5组;第1组:不干预;第2组:卵巢切除组,而第3 - 5组的动物接受卵巢切除并经阴道接种以建立VVC。第4组和第5组的动物分别用(LA - 5)和(B - 2178)菌株进行阴道乳酸杆菌治疗7天。在治疗停止后1、3和7天对阴道灌洗液中的负荷进行测量。对阴道组织进行组织学、形态计量学和免疫组织化学研究。在阴道组织中测量IFN - γ、IL - 4和IL - 17。
与两组治疗前的计数(4850±1419.51和4966.67±852.45 CFU/mL)相比,即使在停止乳酸杆菌治疗7天后,(B - 2178)和(LA - 5)均显著降低了阴道负荷(250±77.46和133.33±40.82 CFU/mL)。与未治疗的感染组相比,两个治疗组中促炎细胞因子IL - 17和IFN - γ均有统计学显著降低。与(LA - 5)相比,(B - 2178)对减少的菌丝形成以及阴道组织的核因子κB(NF - κB)免疫染色密度有显著影响。此外,与(LA - 5)相比,(B - 2178)治疗显著减轻了感染引发的上皮损伤,并恢复了正常的阴道结构,组织学和形态计量学研究证明了这一点。
通过在阴道上皮中维持免疫耐受状态并改善阴道组织中不良的不受控制的炎症反应,(B - 2178)有可能在益生菌临床试验中单独使用或与其他乳酸杆菌物种联合使用以治疗或预防VVC。