1.Microemulsion-based gel of fluorouracil for transdermal delivery.
Yanyu XIAO ; Fang LIU ; Zhipeng CHEN ; Qineng PING
Acta Pharmaceutica Sinica 2010;45(11):1440-6
This study is to prepare the microemulsion-based gel based on the W/O microemulsion and fluorouracil (5-Fu) as a model drug to study the transdermal characterization and observe its skin irritation of the microemulsion-based gel in vitro. IPM acted as oil phase, AOT as surfactant, Tween 85 as cosurfactant, water was added dropwise to the oil phase to prepare W/O microemulsion at room temperature using magnetic stirring, then 5-Fu powder was added. The gelatin was used as substrate to prepare 5-Fu microemulsion-based gel. The permeation flux of 5-Fu from 5-Fu microemulsion-based gel across excised mice skin was determined in vitro using Franz diffusion cell to study the influence of the amount of gelatin and the drug loading capacity. Refer to 5-Fu cream, the irritation of microemulsion and microemulsion-based gel on the rat skin was studied. Based on the water/AOT/Tween 85/IPM microemulsion, only the gelatin can form the microemulsion-based gel. At 25 degrees C, 32 degrees C and 40 degrees C, the amount of gelatin required for the formation of microemulsion-based gel were 7%, 14% and more than 17%, respectively. The 12 h transdermal cumulated permeation amount of 5-Fu from microemulsion-based gel containing 14% gelatin and 0.5% drug loading were (876.5 +/- 29.1) microg x cm(-2), 12.3 folds and 4.5 folds more than 0.5% 5-Fu aqueous solution and 2.5% (w/w) 5-Fu cream, respectively. Microemulsion-based gel exhibited some irritation, but could be subsided after drug withdrawal. Microemulsion-based gel may be a promising vehicle for transdermal delivery of 5-Fu and other hydrophilic drug.
2.Research progress on low carbohydrate diet in the control of overweight and obesity
LU Yanyu ; GUO Huilan ; SHEN Fang ; HUANG Xiaoxu ; ZHANG Pianhong
Journal of Preventive Medicine 2021;33(12):1231-1235
Overweight and obesity are main risk factors for chronic metabolic diseases, and are strongly associated with the increased risk of premature death. Low carbohydrate diet (LCD) has been proven to effectively control body weight and fat mass in overweight and obese patients by short-term (≤6 months) dietary intervention studies. The mechanisms include regulation of energy metabolism, anti-inflammatory, antioxidant, alteration in expression of lipid metabolic-related genes and modulation of intestinal flora. However, the conclusions are inconsistent on whether LCD can cause durable weight loss and reduce the risk of overweight and obesity. This review summarizes the current research progress on the mechanisms, epidemiological studies, intervention studies and potential risks of LCD in controlling overweight and obesity, providing a reference for the future research and clinical application.
3.Research Progress of Pseudogenes in Hepatocellular Carcinoma
Kaixin LI ; Che CHEN ; Yanyu ZHAO ; Wenjie GUO ; Fang LIU
Cancer Research on Prevention and Treatment 2023;50(8):813-819
Pseudogenes were initially thought to have no function and were called by aliases, such as "junk genes." With the emergence of large-scale genomics projects and more and more experimental studies, pseudogenes have been shown to play an important role in the occurrence and development of solid tumors, especially playing an important regulatory role in the occurrence and develepment of liver cancer, such as regulating the proliferation, apoptosis, invasion, metastasis, and immunity of liver cancer cells. Recent studies showed that pseudogenes can act as regulators of oncogenes and tumor suppressors in hepatocellular carcinoma (HCC) and can thus serve as prognostic markers and even therapeutic targets for this cancer type. In this review, we systematically summarize the mechanisms and functions of different pseudogenes in HCC and present their future prospects as therapeutic targets.
4.Research progress on symptom clusters in acute leukemia patients undergoing chemotherapy
Yanyu ZOU ; Hong CHENG ; Ningning YAN ; Sishi FANG ; Chengli ZHONG ; Qianqian LI
Chinese Journal of Modern Nursing 2023;29(36):5035-5040
During the chemotherapy phase, patients with acute leukemia exhibit a myriad of symptoms. These symptoms are interconnected and mutually influential, forming symptom clusters that severely impact the patient's quality of life. This article summarizes the concept of symptom clusters, types of symptom clusters in acute leukemia patients undergoing chemotherapy, influencing factors, and non-pharmacological intervention measures. The aim is to provide a foundation for medical professionals in designing management plans for symptom clusters in acute leukemia patients undergoing chemotherapy.
5.Meta-synthesis of qualitative studies on home management needs of patients with spinal cord injury
Yanyu FANG ; Qin JIA ; Yaqin DAI ; Ke LI ; Siqi LI ; Yingying WANG ; Jiayun WU ; Yufei CHAI ; Chu GAO ; Mengyuan YE ; Xiaoyan YI
Chinese Journal of Modern Nursing 2024;30(26):3519-3527
Objective:To systematically evaluate and Meta-synthesize qualitative studies on the home management needs of patients with spinal cord injury (SCI) to understand their actual self-management needs and improve the quality of home management for patients with SCI in China.Methods:A comprehensive search was conducted in databases including CNKI, Wanfang, CBM, PubMed, Embase, Web of Science, CINAHL, and Cochrane Library for qualitative research on the home management needs of patients with SCI, with a search timeframe up to November 30, 2023. The methodological quality of the included studies was evaluated using the Joanna Briggs Institute (JBI) Qualitative Assessment and Review Instrument (2016). Results were integrated and analyzed using Meta-synthesize methods.Results:A total of 15 studies were included, from which 58 distinct research findings were extracted. These were categorized into 10 new categories, which were further integrated into four main results: the need for positive emotional support, daily living-related needs, healthcare service needs, and social support needs.Conclusions:Healthcare providers should deeply understand the home management needs of patients with SCI. Utilizing artificial intelligence technology, an integrated support model encompassing hospital, home, and society can be constructed. Establishing a comprehensive home rehabilitation platform for patients with SCI can focus on psychological issues and enhance social support levels, thereby improving patients' quality of life.