Accelerating wound healing: Unveiling synergistic effects of P25/SWCNT/Ag and P25/rGO/Ag nanocomposites within PRP-gelatin scaffold, highlighting the synergistic antimicrobial activity

Wound healing is a multifaceted biological process requiring innovative strategies to enhance efficiency and counter infections. In this groundbreaking study, we investigate the regenerative potential of platelet-rich plasma (PRP) integrated into a gelatin (GLT) scaffold along with nanocomposites of titanium dioxide (TiO2) (P25)/single-walled carbon nanotubes (SWCNTs)/Ag and P25/reduced graphene oxide (rGO)/Ag. Incorporating these advanced materials into the PRP/GLT delivery system aims to optimize the controlled release of growth factors (GFs) and leverage the exceptional properties of nanomaterials for enhanced tissue repair and wound healing outcomes. Antioxidant activity assessment using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity reveals the superior performance of P25/SWCNTs/Ag compared to P25/rGO/Ag. Their synergistic effects are evaluated in conjunction with antibacterial and antifungal antibiotics. Furthermore, the wound healing potential of P25/SWCNTs/Ag and P25/rGO/Ag, combined with PRP/GLT, is examined. Notably, both nanocomposites exhibit promising synergistic effects with gentamicin and fluconazole against pathogenic strains. Significantly, the inclusion of non-activated PRP substantially augments the wound healing efficacy of P25/SWCNTs/Ag on days 3 (p < 0.01) and 15 (p < 0.05). These findings pave the way for advanced wound dressing and therapeutic interventions, capitalizing on the synergistic effects of PRP and nanomaterials, thus ultimately benefiting patients and advancing regenerative medicine.

Protective Effect of L-carnitine against Cefquinome Sulfate Induced Testicular Damage and Oxidative Stress in Male Albino Rats

The present study was conducted to evaluate the protective effect of L-carnitine (LC) against possible deleterious effects of cefquinome sulfate (CS) on antioxidant capacity, fertility parameters and histopathological findings of reproductive organs in male rats. Therefore, seventy two mature male rats were equally divided into four equal groups as following: The control group of rats was administered two s.c. doses of physiological saline (vehicle of other drugs) (2ml/kg b.wt. once daily for 5 successive days and 2ml/kg b.wt. once daily for 8 successive weeks), the second group was s.c. administered LC (200 mg/kg b.wt. once daily for 8 successive weeks), the third group was s.c. administered CS (50 mg/kg b.wt. once daily for 5 successive days) and the fourth group was s.c. administered CS concomitantly with LC by the same doses. The obtained results showed that administration of CS induced a significant (P≤ 0.05) increase in serum level of Malondialdehyde (MDA) and total sperm abnormalities with significant (P≤ 0.05) decrease in serum level of total antioxidant capacity (TAC), sperm motility and total sperm count. Moreover, CS induced histopathological changes in tissues of testes and epididymis. Conversely, administration of LC concomitantly with CS ameliorates all the previous antioxidant, fertility and histopathological alterations induced by CS. It could be concluded that CS induced some undesired effects on antioxidant activity, fertility parameters and histopathological findings which could be ameliorated by LC in male albino rats.

Clinico-pathological Evaluation of Hepatoprotective Effect of Dandelion and Ginkgo-biloba Extract against Thioacetamide Induced Liver Damage

This study was carried outto investigatethe ameliorative effect of both of Dandelion and Ginko.biloba extract on liver toxicities induced by thioacetamide (TAA) in male albino rats.Sixty male albino rats were divided into sixgroups (10 rats pereach).Group 1 (Negative control): which received 1 ml of saline orally and 1ml of saline intra-peritoneal (I/P),Group 2: received TAA for induction of hepatic injuryGroup 3:received TAA+ ginkgo biloba extract (50 mg/ b.wt.),Group 4: received TAA+ ginkgo biloba extract (100 mg/ kg b.wt.).Group 5: which received TAA + dandelion extract (250 mg/ kg b.wt).Group 6: which received TAA+ dandelion extract (500 mg/ kg b.wt.).TAA was administrated by I/P route at dose level of 250mg/kg b.wt , extracts were administrated orally, they were administrated 3 times/week for 4 weeks. The obtained results revealed that intoxication with TAAshowed a significant elevation in serum liver enzymes activity, total bilirubinplussignificant decrease in serum levels of total proteins andalbumin, significant increase in total cholesterol and triglycerides.At the same time ,intoxication with TAA exhibited severe oxidative damged stress ,represented by a significant increase in hepatic level of malondialdehyde (MDA)as well asa significant decrease in reduced glutathione (GSH).The characteristic pathological changes were represented by ,(TAA),severe degenerative andnecrotic alterationsin the hepatocytes. The treatment with G.biloba and D- in different treateddosesattenuatedTAA-induced,serum biochemical alterations, oxidative stressand histopathological changes in liver.

Gelatin Loaded Titanium Dioxide and Silver Oxide Nanoparticles: Implication for Skin Tissue Regeneration

Treatment of burn wounds has many requirements to ensure wound closure with healthy tissue, increased vascularization, guarantee edema resolution, and control bacterial infection. We propose that titanium oxide (TiO₂) nanoparticles (NPs) will be more efficient than silver dioxide (Ag₂O) in the treatment of burn wounds. Herein, gelatin loaded NPs (GLT-NPs) were evaluated for their efficacy to regenerate second-degree burn wound in rabbit skin. TEM results revealed that the average particle sizes were ⁓ 7.5 and 17 nm for Ag₂O and TiO₂ NPs, respectively. The results of the in vivo application of GLT-NPs on burn wound in the rabbit revealed that both Ag₂O and TiO₂ NPs were efficient than the control none treated (CTRL) and GLT group. In terms of the healing rate, the GLT-TiO₂ did not show any significant difference than GLT-Ag₂O (99.57% vs. 99.85%, p = 0.2). Meanwhile, the healing rate was significantly higher in both NPs' treated groups than CTRL (94.16%, p < 0.01) and GLT group (95.07%, p < 0.05). Also, the histological analysis using H&E staining showed re-epithelization, less edema, and enhanced vascularization in both GLT-NPs than CTRL and GLT groups. Furthermore, immunohistochemical analysis of TGF-β1 and α-SMA revealed significantly a higher expression in both GLT-NPs groups than CTRL and GLT groups at weeks 1 and 2 (p < 0.05). Interestingly, TGF-β1 and α-SMA were substantially higher in GLT- TiO₂ than GLT-Ag₂O at weeks 1 and 2 (p < 0.05), but the expression was not significant at week 3. In conclusion, GLT-NPs showed higher regenerative capacity and enhanced the healing quality after burn wound compared to CTRL and GLT. Graphical abstract.