Mesenchymal Stem Cell Allograft Improved Pain Management in Dogs with Osteoarthritis

Background: Osteoarthritis is one of the most common bone diseases, triggered by bone destruction stemming from the inflammatory response of chondrocytes. The disease progresses slowly, but halting its progression or finding a cure remains elusive. The treatment of pain associated with osteoarthritis has yielded unsatisfactory results. In recent years, mesenchymal stem cells (MSCs) have emerged as a potential avenue for addressing the condition. In this study, we used MSCs to treat companion dogs with osteoarthritis. Methods: For this study, 26 animals were included in this study to assess the pain and mobility one month after treatment. The pain scores were obtained from owners using a questionnaire based on the Helsinki Chronic Pain Index, and the Liverpool Osteoarthritis in Dogs (LOAD) Owner questionnaire to assess the mobility of the dogs from stem cell infusion. Results: Questionnaires were administered to dog owners before and one month after treatment, and we found that dogs treated with MSCS experienced an 81.2% ± 6.8% reduction in pain and a 77.9% ± 10.1% increase in mobility, whereas most of the dogs in the untreated control group experienced disease progression. Conclusions: The transplantation of stem cells into companion pets is a promising and expanding opportunity for pet owners with aging and arthritic dogs. MSCs may play an important role in the treatment of OA without complications in companion pets.

Research progress on methane conversion coupling photocatalysis and thermocatalysis

Conversion of methane into value-added chemicals is of significance for methane utilization and industrial demand of primary chemical products.The barrier associated with the nonpolar structure of methane and the high bond energy C-H bond(4.57 eV)makes it difficult to realize methane conversion and activation under mild conditions.The photothermal synergetic strategy by combining photon energy and thermo energy provides an advanced philosophy to achieve efficient methane conversion.In this review,we overview the current pioneering studies of photothermal methane indirect conversion and present the methane direct conversion by the way of photocatalysis and thermocatalysis to provide a fundamental understanding of methane activation.Finally,we end this review with a discussion on the remaining challenges and perspectives of methane direct conversion over single-atom catalysts via photothermal synergetic strategy.

Comparison of regional arterial chemotherapy and systemic intravenous chemotherapy for advanced pancreatic cancer:a systematic review and meta-analysis

Chemotherapy is the mainstay of treatment for advanced pancreatic cancer(stageⅢ/Ⅳ).However,conventional systemic intravenous chemotherapy(SIC)has been unsatisfactory for pancreatic cancer.In recent years,regional arterial infusion chemotherapy(RAIC)has been clinically used as a new chemotherapy regimen for the treatment of advanced pancreatic cancer,but its efficacy is controversial.The purpose of this study was to evaluate the clinical efficacy and safety of RAIC.We searched literatures in databases such as PubMed,EMBASE,Cochrane Library,Web of Science,and CNKI.After screening,this meta-analysis finally included 9 randomized controlled trials(RCTs)with 444 patients(230 RAIC and 214 SIC).We used the Cochrane Risk of Bias 2.0 tool to assess risk of bias for included RCTs.Outcomes were overall survival(OS),overall response rate(ORR),adverse events rate(AER),and pain remission rate.Outcome indicators used relative risk(RR)and its 95%confidence interval(CI)as effect analysis statistics.The results showed that RAIC had some advantages over SIC in terms of ORR,OS,incidence of leukopenia,and pain remission.In conclusion,compared with SIC,RAIC has better clinical efficacy and lower toxicity in the treatment of advanced pancreatic cancer.