DSpace Collection: 705 - 909

Cytotoxic properties of Pelargonium graveolens leaf extract and its green-synthesized gold nanoparticles (in vitro study)

Mon, 01 Jan 2024 00:00:00 GMT

Title: Cytotoxic properties of Pelargonium graveolens leaf extract and its green-synthesized gold nanoparticles (in vitro study) Authors: Asker, Ahmed Y.M.; Haidar, Aseel H.M.J. Al Abstract: Objective: This study aimed to assess the cytotoxic effects of an extract from Pelargonium graveolens leaves and green-synthesized gold nanoparticles (AuNPs) in a mouthwash when used as a substitute for commercial mouthwashes. Human dermal fibroblasts from neonates (HDFn) were used in this study that done in vitro, because their characteristics were nearly identical to those of human gingival fibroblasts. Method: In this study, the green synthesis of AuNPs using extracts from P. graveolens leaves was investigated as a sustainable and economical method. Then, using a range of analytical techniques, the physicochemical properties were evaluated, such as transmission electron microscopy (TEM), X-ray diffraction (XRD), and ultraviolet visible absorption spectroscopy (UVeVis), so the preparations and analytical techniques of P. graveolens gold nanoparticles (AuNPs) take little time is about 10 days. The current study used the 3-[4,5-dimethylthiazol-2- yl]-2,5 diphenyl-tetrazolium bromide Mosmann’s Tetrazolium Toxicity (MTT) to study the cytotoxic effects of P. graveolens leaf extract with P. graveolens gold nanoparticles (AuNPs) utilizing a human fibroblast-derived standard cell line. Results: Various doses (1000, 500, 250, 100, 50, 25, 12.5, 6.25, and 3.125 mg/mL) of P. graveolens AuNPs were used to assess cytotoxicity, demonstrating little cytotoxic effects (approximately below 20% toxicity). A high level of biocompatibility was observed between the P. graveolens AuNPs and normal human fibroblasts. Conclusion: The mouthwash made using green synthetic AuNPs obtained from P. graveolens leaf extract show high level of biocompatibility and has low cytotoxicity. Therefore, herbal mouthwash formulations can serve as a viable substitute for chemical mouthwashes.

Extensive study of CCN4, VCAM-1, MMP-3, and GM-CSF as reliable markers for disease activity in rheumatoid arthritis

Mon, 01 Jan 2024 00:00:00 GMT

Title: Extensive study of CCN4, VCAM-1, MMP-3, and GM-CSF as reliable markers for disease activity in rheumatoid arthritis Authors: Yasin, Ahmed T.; Ali, Eman T.; Shari, Falah H.; Mohammed, Ali N. Abstract: Background: The involvement of Wnt-1-induced secreted protein-1 (WISP1/CCN4) in several inflammatory reaction has recently been proposed. Nevertheless, this protein’s involvement in rheumatoid arthritis (RA) remains debated. Associations between poorly diagnosed RA and several classical markers derived from demography and biochemistry have been reported. Aim: We sought to investigate the reliability and effectiveness of serum concentrations of CCN4, vascular cell adhesion molecule-1 (VCAM-1), matrix melloprotenase-3 (MMP-3), and granulocyte-macrophage colony-stimulating factor (GM-CSF) in monitoring and predicting RA and bone damage, and their correlation with RA disease course. Methods: The study analyzed 128 patients with RA, comprising 68 newly diagnosed and 60 previously diagnosed patients, as well as 60 controls. Biomarker levels were measured with enzyme linked immuno-sorbent assays. Routine laboratory parameters such as serological, clinical, biochemical, and hematological parameters were additionally measured. Demography, anthropometry, and clinical symptom data were collected through interviews and a questionnaire. The joint disease activity score 28 (DAS28) was used to determine disease activity. Results: Concentrations of four biomarkers were significantly higher in the RA group than the healthy controls. Elevated biomarker concentrations were also observed in patients with high, rather than moderate or low, DAS28- ESR activity status, except for monocyte count, hematocrit (%), and urea level. Furthermore, CCN4 level positively correlated with VCAM-1, MMP-3, and GMCSF levels, DA-S28-CRP and DAS28-ESR. The levels of three predictive markers, CCN4, VCAM-1, and MMP- 3, were elevated in non-treated patients, whereas GMCSF level showed no difference. The highest area under the curve was 73.3% for CCN4, with 93.3% sensitivity and 64.7% specificity. Conclusion: Our data suggest that CCN4 can be reliably used to indicate activity and therapeutic response associated with RA, thus facilitating earlier RA diagnosis.

Burden of non-communicable diseases in Health Council of Gulf Cooperation (GCC) countries

Mon, 01 Jan 2024 00:00:00 GMT

Title: Burden of non-communicable diseases in Health Council of Gulf Cooperation (GCC) countries Authors: Alqadasi, Eyad Taha; Chamroonsawasdi, Kanittha; Saejeng, Kittipong; Nagi, Mouaddh Abdulmalik Abstract: Objectives: This study was aimed at comparing deaths, years of potential life loss (YPLL), and economic loss due to nine non-communicable diseases (NCDs) among Health Council of Gulf Cooperation (GCC) countries. Methods: The number of deaths and life expectancy by age and sex in each country, obtained from the 2019 World Health Organization database, were used to calculate YPLL by disease and sex. Economic loss was estimated by combining the annual income adjusted for the present value multiplied by the YPLL for each disease by sex and country. Results: The nine NCDs were responsible for 152,854 deaths, 3 million YPLL, and 23.9 billion US$ economic loss in GCC countries. The most common cause of death was ischemic heart disease, which caused 82,232 deaths (54% of the total), 1.6 million YPLL (54% of the total), and a 12.8 billion US$ economic loss (53% of the total). The least common cause of death was lung cancer, which caused 1,960 deaths, 37,287 YPLL, and a 317.6 million US$ economic loss. KSA was the most affected country among all GCC countries in terms of deaths (68,027), YPLL (1.4 million), and economic loss (14.3 billion US$). Notably, KSA had 45%, 49%, and 60% of the entire region’s deaths, YPLL, and economic loss, respectively. In contrast, Qatar was the least affected country in terms of deaths and YPLL, and Yemen was the least affected country in terms of economic loss. Conclusion: The burden of NCDs in GCC countries in terms of deaths, YPLL, and economic loss is substantial. Policymakers should pay greater attention to detecting, preventing, and controlling these NCDs and their risk factors.

Impaired phagocytosis and oxidative respiratory burst activity in sickle cell anemia leukocytes

Mon, 01 Jan 2024 00:00:00 GMT

Title: Impaired phagocytosis and oxidative respiratory burst activity in sickle cell anemia leukocytes Authors: Akinbo, David B.; Ajayi, Olutayo I.; Eluji, Onyinye M.; Olatunji, Imisioluwa; Okoroloko, Temisan M. Abstract: Objectives: This case-control study investigated the mode of leukocyte function in sickle cell anemia (SCA) to delineate the underlying immunopathology for early diagnosis and mitigate the increased bacterial infection risk in this patient population. Method: In total, 90 participants comprising 24 hemoglobin (Hb)-AA, 22 Hb-AS, 23 steady state Hb-SS and 21 vaso-occlusive crisis state Hb-SS subjects were recruited for this study. The subjects were further divided into the following six groups: Hb-AA and Hb-AS subjects as control groups, Hb-SS subjects at steady state, Hb-SS subjects in a vaso-occlusive crisis state, Hb-SS subjects undergoing medication (Meds), and Hb-SS subjects undergoing medication plus blood transfusion (Meds/BT) group, respectively. Hematological analysis, Hb electrophoresis, leukocyte ratios, and leukocyte functional assays were assessed with standard methods, and interleukin 8 (IL-8) and L-selectin levels were evaluated using enzyme-linked immunosorbent assays. Results: Total leukocyte and monocyte counts were increased in the Hb-SS groups compared to the control groups. However, the Hb-SS groups had lower lymphocyte counts than the other groups (p < 0.005). Leukocyte viability was increased in the SCA groups, while phagocytic activities and oxidative respiratory burst were both reduced in the SCA groups (p < 0.005). Increased IL-8 levels were observed in all SCA groups (p < 0.05), whereas L-selectin levels of the Hb-SS steady and Hb-SS on Meds groups were decreased compared to the other groups (p < 0.05). The neutrophil-to-lymphocyte ratio, monocyte-to-lymphocyte ratio, and platelet-tolymphocyte ratio were higher in the SCA groups than the control groups (p < 0.05). Conclusion: Impaired leukocyte phagocytic and oxidative respiratory burst activities constitute altered leukocyte function in SCA, which can increase their susceptibility to infections and the risk of mortality, especially during the crisis state. Novel therapeutic approaches can be tailored specifically to enhance these leukocyte functions and mitigate the increased infection risk in SCA.