Liver cirrhosis poses a global health challenge marked by significant prevalence and mortality. Current therapeutic options are limited by high costs and immune-mediated rejection, necessitating the exploration of innovative strategies to enhance hepatic self-rehabilitation, and counteract the underlying pathological mechanisms. We evaluated the hepatoprotective activity of rat adipose-derived mesenchymal stem cells (ADMSCs) in combination with platelet-rich plasma (PRP) and recombinant human hepatocyte growth factor (rh-HGF) on a rat model of liver fibrosis/cirrhosis induced by bile duct ligation (BDL). Treatment with PRP or rh-HGF alone did not yield significant hepatoprotection in the BDL-induced liver cirrhosis model. However, ADMSC transplantation alone exhibited the potential to alleviate impaired liver conditions. The combination of PRP and rh-HGF demonstrated superior ameliorative effects compared to either treatment alone. Notably, the combination of ADMSC + PRP or ADMSC + rh-HGF significantly enhanced hepatoprotective capacity compared to individual or combined PRP and rh-HGF therapies. Injection of ADMSC via the tail vein reduced inflammation, hepatocyte damage, and collagen deposition, improving overall liver function. This improvement was more pronounced when ADMSC was administered with PRP and rh-HGF versus monotherapy. Our study concludes that ADMSCs exert antifibrotic effects by inhibiting hepatic stellate cell proliferation, collagen synthesis, and inducing apoptosis. ADMSCs also demonstrate immune-modulatory effects and transdifferentiate into hepatic progenitor cells, secreting trophic factors, cytokines, and chemokines that promote impaired liver regeneration. The observed arrest in liver fibrosis progression highlights the potential therapeutic impact of these interventions.

Bone regeneration poses a significant challenge in the field of tissue engineering, prompting ongoing research to explore innovative strategies for effective bone healing. The integration of stem cells and nanomaterial scaffolds has emerged as a promising approach, offering the potential to enhance regenerative outcomes. This study focuses on the application of a stem cell-laden nanomaterial scaffold designed for bone regeneration in rabbits. The in vivo study was conducted on thirty-six healthy skeletally mature New Zealand white rabbits that were randomly allocated into six groups. Group A was considered the control, wherein a 15 mm critical-sized defect was created and left as such without any treatment. In group B, this defect was filled with a polycaprolactone–hydroxyapatite (PCL + HAP) scaffold, whereas in group C, a PCL + HAP-carboxylated multiwalled carbon nanotube (PCL + HAP + MWCNT-COOH) scaffold was used. In group D, a PCL + HAP + MWCNT-COOH scaffold was used with local injection of bone morphogenetic protein-2 (BMP-2) on postoperative days 30, 45, and 60. The rabbit bone marrow-derived mesenchymal stem cells (rBMSCs) were seeded onto the PCL + HAP + MWCNT-COOH scaffold by the centrifugal method. In group E, an rBMSC-seeded PCL + HAP + MWCNT-COOH scaffold was used along with the local injection of rBMSC on postoperative days 7, 14, and 21. For group F, in addition to the treatment given to group E, BMP-2 was administered locally on postoperative days 30, 45, and 60. Gross observations, radiological observation, scanning electron microscopic assessment, and histological evaluation study showed that group F displayed the best healing properties, followed by group E, group D, group C, and B. Group A showed no healing with ends blunting minimal fibrous tissue. Incorporating growth factor BMP-2 in tissue-engineered rBMSC-loaded nanocomposite PCL + HAP + MWCNT-COOH construct can augment the osteoinductive and osteoconductive properties, thereby enhancing the healing in a critical-sized bone defect. This novel stem cell composite could prove worthy in the treatment of non-union and delayed union fractures in the near future.

Mesenchymal stem cells derived from bone marrow have significant capacity for attachment, expansion and multiline age differentiation. This property has been widely used in the clinical practice for treatment of variety of diseases. Stem cell collection and culturing techniques varies for different species. Time taken for the primary cell culture to attain confluency depends on the species from which bone marrow is isolated. This paper describes an easy technique for the isolation and differentiation of mesenchymal stem cells derived from rat bone marrow (r-MSCs) on the basis of their density gradients and plastic adherence property along with the multiline age differentiation potential. After isolation, characterization was performed morphologically by examination under phase contrast microscope and viability detected by cell viability assay. Spindle shaped morphology was exhibited by the attached nucleated cells. Their multiline age differentiation to osteoblast, adiposities, osteoblast and chondroblasts was examined with respective induction medium and confirmed by oil red O, alizarin red and Alcian blue stains respectively. The r-MSCs were cultured and passaged for their expansion and were maintained in suitable environment for long time and can be used for cell based regenerative medicine.

Wound healing and skin regeneration involve intricate interactions between various cellular, molecular, and biochemical factors. This narrative review aims to provide an in-depth analysis of the present status of therapeutic strategies for wound healing and skin regeneration. The literature review was performed using the Google Scholar search engine with the help of relevant keywords. Selected publications were used to synthesize different sections of the narrative review. The quest for innovative therapeutic approaches to accelerate wound healing and enhance skin regeneration has led to remarkable advancements in recent years. The landscape of therapeutic approaches for wound healing and skin regeneration is evolving rapidly, driven by groundbreaking discoveries and interdisciplinary collaborations. From advanced wound dressings and growth factor therapies to stem cell-based interventions and gene editing techniques, the arsenal of tools at our disposal continues to expand. As researchers continue to unravel the intricate mechanisms underlying wound repair and regeneration, the potential for transformative therapies to revolutionize patient care remains immense. Through a combination of innovative technologies, personalized approaches, ethical considerations, and global accessibility, the future of wound healing holds promise for improving the lives of countless individuals worldwide. Despite significant advancements, several knowledge gaps persist in the field of wound healing and skin regeneration. Further elucidation of cellular and molecular mechanisms governing wound repair, inflammation resolution, and scar formation is warranted. Exploring the crosstalk between wound healing and the microbiome and the influence of ageing and systemic diseases will unravel new therapeutic targets and strategies. As researchers delve deeper into understanding the intricate mechanisms underlying wound repair, the development of novel therapies and their clinical translation become increasingly promising. With a multidisciplinary approach and ongoing advancements in technology, biology, and medicine, the future holds great potential for transforming the field of wound healing and skin regeneration.