Khan Allah Nawaz, Yasmin Humaira, Ghazanfar Shakira, Hassan Muhammad Nadeem, Keyani Rumana, Khan Imran, Gohar Madeha, Shahzad Asim, Hashim Maha J, Ahmad Ajaz
Department of Biosciences, COMSATS University Islamabad (CUI), Islamabad, Park road, Chak shazad, 44000 Islamabad, Pakistan.
Department of Allied Health Sciences, Iqra University Islamabad Campus, Chak Shahzad, Pakistan.
Saudi J Biol Sci. 2021 Nov;28(11):6069-6076. doi: 10.1016/j.sjbs.2021.08.029. Epub 2021 Aug 18.
Potential probiotic bacteria can be used as a biotherapeutic agent and a sustainable alternative to antibiotics, as an anti-oxidative, anti-inflammatory, and anti-diabetic agent without causing any serious side effects. Mostly human-friendly Lactic acid bacteria (LAB) have been isolated from the animal-human origin to be used as biotherapeutic agents or to produce useful metabolites (nutraceutical). However, less information is known about the role of medicinal plants associated LAB as biotherapeutic agents. The isolation of 115 human-friendly strains was done from the rhizosphere of the medicinal plants . The obtained bacteria were then tested for their safe status before being using it for a beneficial purpose. Out of 115 strains, 29 (25%) were negative for blood hemolytic activities. Among these 29 isolates, three isolates did not show a breakdown of gelatin and were recognized as safe. Antibiotic resistance assay showed resistance of two of them against antibiotics discs of Streptomycin (10 µg), Ciprofloxacin (20 µg), Vancomycin (30 µg), Metronidazole (10 µg), Ampicillin (5 µg), Chloramphenicol (30 µg), Kanamycin (30 µg), Erythromycin (15 µg), Penicillin (10 µg) and Tetracycline (30 µg). The bacterial isolate (T-2) was found safe that was identified as by sequence analysis of 16 s rRNA gene and processed as an anti-bacterial, anti-oxidant, anti-diabetic, and anti-inflammatory agent. Free radical scavenging activities and inhibition of α-amylase activities for were found relative to standard drug values as 68% and 73% and 51.3% and 65.3%, respectively. The anti-inflammatory assay showed 61.6% () while showed 69% (aspirin) activity for denaturation albumin protein. The results suggested that can be used as a potential probiotic strain as well as can be used to produce nutraceuticals.
潜在的益生菌可作为生物治疗剂和抗生素的可持续替代品,用作抗氧化、抗炎和抗糖尿病剂,且不会引起任何严重的副作用。大多数对人类有益的乳酸菌(LAB)已从动物-人类来源中分离出来,用作生物治疗剂或生产有用的代谢产物(营养保健品)。然而,关于与药用植物相关的乳酸菌作为生物治疗剂的作用,人们了解得较少。从药用植物的根际分离出了115株对人类有益的菌株。然后在将获得的细菌用于有益目的之前,对其安全状况进行了测试。在115株菌株中,29株(25%)的血液溶血活性为阴性。在这29株分离物中,有3株未表现出明胶分解,被认为是安全的。抗生素抗性试验表明,其中两株对链霉素(10μg)、环丙沙星(20μg)、万古霉素(30μg)、甲硝唑(10μg)、氨苄青霉素(5μg)、氯霉素(30μg)、卡那霉素(30μg)、红霉素(15μg)、青霉素(10μg)和四环素(30μg)的抗生素圆盘具有抗性。通过16s rRNA基因序列分析鉴定出的细菌分离株(T-2)被发现是安全的,并被加工用作抗菌、抗氧化、抗糖尿病和抗炎剂。相对于标准药物值,其自由基清除活性和α-淀粉酶活性抑制率分别为68%和73%以及51.3%和65.3%。抗炎试验表明,其对变性白蛋白的活性为61.6%(),而阿司匹林的活性为69%。结果表明,该菌株可作为潜在的益生菌菌株,也可用于生产营养保健品。