Immunomodulatory effects of Nigella sativa seed polysaccharides by gut microbial and proteomic technologies

Author(s):  
Qiongxin Liang ◽  
Jing Dong ◽  
Senye Wang ◽  
Wenjing Shao ◽  
Adel F. Ahmed ◽  
...  
2021 ◽  
Vol 140 ◽  
pp. 111774
Author(s):  
Mohammad Reza Khazdair ◽  
Zahra Gholamnezhad ◽  
Ramin Rezaee ◽  
Mohammad Hossein Boskabady

Dose-Response ◽  
2021 ◽  
Vol 19 (2) ◽  
pp. 155932582110136
Author(s):  
Mohamed F. Radwan ◽  
Mohamed A. El-Moselhy ◽  
Walied M. Alarif ◽  
Mohamed Orif ◽  
Nabil K. Alruwaili ◽  
...  

To improve the water solubility of thymoquinone (TQ), a major constituent of Nigella sativa seed oil, a TQ-loaded self-nanoemulsifying drug delivery system (SNEDDS) was prepared. The SNEDDS formulation was optimized using almond oil (AO) (Oil; X1), tween 80 (surfactant; X2) and polyethylene glycol 200 (PEG 200) (cosurfactant; X3) compounds as independent variables. The results showed that the globule size ranged from 65 to 320 nm. In addition, a strong agreement was reached between the system estimation and the experimental values of globule size. To evaluate the gastroprotective effect of optimized TQ-loaded SNEDDS against indomethacin (Indo.)-induced gastric ulcers in comparison with non-emulsified TQ, the ulcer index and histopathological changes were estimated. Optimized TQ-loaded SNEDDS showed improved gastroprotective activity against Indo.-induced ulcers relative to the non-emulsified TQ. In addition, the gastroprotective index was improved by 2-fold in TQ-loaded SNEDDS as compared to non-emulsified TQ. This is attributed to the strong antioxidant and the cytoprotective activities of the TQ. These results demonstrate enhancement of the efficacy of TQ through the optimized SNEDDS.


2018 ◽  
Vol 7 (2) ◽  
Author(s):  
Amnah M.A. Alsuhaibani

In this study, the gross composition and mineral content of Nigella sativa seed powder (NSP) and fatty acid composition of Nigella sativa oil (NSO) were investigated. The ability of NSP, extract (NSE) and NSO in reducing the effects of cisplatin-induced renal toxicity in Sprague-Dawley rats were examined. The obtained results showed that NSP contains high amounts of carbohydrates, protein, and fiber while NSO has higher amounts of linoleicacid, oleic acid, and myristic acid. Rats treated with NSP, NSO, and NSE exhibitedreducedserum levels of urea, creatinine, and potassium, and a significant increase of Na, Na/K, vitamin D, nutritional markers, and antioxidant enzymes compared to the cisplatin-induced renal toxicity group receiving no Nigella sativa seed treatment. This study determined that all powder, oil, and extracts of N. sativa contain potent bioactive components that may aid in treatment against cisplatininduced renal toxicity in rats.


Author(s):  
Nasima Iqbal ◽  
ATA UR Rehman ◽  
Syeda Amber Zaidi ◽  
Kiran Khan ◽  
Lubna Farooq ◽  
...  

Background: Dental infections were caused by the bacterium overgrowth on the surface of the tooth, and treatment should always be set up to prevent this development.Antibiotics have long been used as a conventional antibacterial medication, but their overuse has resulted in microbes gaining resistance to many of the antibiotics, trying to make many commercialized therapeutic remedies ineffectual and resulting to infection recurrence. In this regard we aim to analyze the antibacterial activity of nigella sativa seeds’ and fenugreek seed extract rinses against S. mutans' colonies. Methodology: It was a preclinical experimental study conducted at Baqai Medical and Dental College Karachi., from January - June 2021. Calculated sample size was n = 80 Consecutive sampling technique was used. Plaque of study participants was collected on sterile strips that was transported to laboratory for culture in sterile containers.The extract of Fenugreek seed and nigella sativa seed was kept in an airtight bottle and stored in a refrigerator till usage. The extracts were diluted in distilled water in 1:4 (Extract: Distilled water). Study participants were instructed to not brush their teeth before sampling. Study participants were divided into four groups (negative control, positive control, fenugreek seed extract group and Nigella sativa group) each group had 20 participants. Diluted Fenugreek seed extract and Nigella sativa extract was given to experimental groups for rinses. Results: There was significant decrease in number of colonies in positive controls, fenugreek seed extract group and nigella sativa extract group and there was no change in number of colonies in control group. Furthermore, the analysis showed significant (p-value = 0.001) difference among the groups followed by post hoc analysis. Post hoc analysis showed no difference between positive control, fenugreek seed extract group and nigella sativa group. Conclusion: Fenugreek seed extract and Nigella Sativa seed extract showed comparable antibacterial properties. Also, the effect was found to be similar to commercially available mouth rinse.


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