This study aims to develop alginate-based hydrogels reinforced with carrageenan and gellan gum as composite materials for oral drug delivery. Alginate, a naturally derived polymer from brown algae, forms a gel upon exposure to cations such as calcium ions, enhancing the hydrogel’s structural integrity. Carrageenan and gellan gum, both polysaccharides, further improve stability and encapsulation efficiency. This research investigates the physical properties, mechanical strength, encapsulation capacity, and swelling behavior of hydrogel beads under simulated gastrointestinal conditions. The findings are expected to demonstrate that incorporating carrageenan and gellan gum enhances the durability and stability of hydrogel beads while enabling controlled release of active compounds in the gastrointestinal tract. These advanced hydrogel beads hold significant potential for applications in the food and pharmaceutical industries as effective oral delivery systems for bioactive substances.
ในงานวิจัยนี้มีจุดมุ่งหมายเพื่อพัฒนาไฮโดรเจลบีดส์จากอัลจิเนตที่เสริมด้วยคาร์ราจีแนนและเจลแลนกัม โดยมีคุณสมบัติที่ช่วยเสริมความแข็งแรงและความยืดหยุ่นให้กับโครงสร้างของไฮโดรเจลบีดส์ เพื่อเพิ่มความทนทานและเสถียรภาพมากขึ้น ซึ่งสามารถนำมาใช้ในการห่อหุ้มและปกป้องสารสำคัญ โดยมุ่งเน้นการควบคุมการปลดปล่อยสารสำคัญไปยังจุดเป้าหมาย การศึกษานี้จะครอบคลุมถึงลักษณะทางกายภาพ ความแข็งแรงของไฮโดรเจลบีดส์ และความสามารถในการกักเก็บสารสำคัญ ลักษณะทางกายภาพและการบวม (Swelling) ภายใต้สภาวะจำลองทางเดินอาหาร โดยใช้สารจำลองน้ำย่อยทั้งในกระเพาะอาหารและลำไส้ การพัฒนาไฮโดรเจลบีดส์จากอัลจิเนตที่เสริมด้วยคาร์ราจีแนนและเจลแลนกัมมีศักยภาพในการนำไปใช้งานในอุตสาหกรรมเภสัชกรรมและอาหารที่ต้องการห่อหุ้มสารสำคัญที่มีประสิทธิภาพสูงในอนาคต
คณะแพทยศาสตร์
Background: The RGL3 gene plays a role in key signal transduction pathways and has been implicated in hypertension risk through the identification of a copy number variant deletion in exon 6. Genome-wide association studies have highlighted RGL3 as associated with hypertension, providing insights into the genetic underpinnings of the condition and its protective effects on cardiovascular health. Despite these findings, there is a lack of data that confirms the precise role of RGL3 in hypertension. Additionally, the functional impact of certain variants, particularly those classified as variants of uncertain significance, remains poorly understood. Objectives: This study aims to analyze alterations in the RGL3 protein structure caused by mutations and validate the location of the ligand binding sites. Methods: Clinical variants of the RGL3 gene were obtained from NCBI ClinVar. Variants of uncertain significance and likely benign were analyzed. Multiple sequence alignment was conducted using BioEdit v7.7.1. AlphaFold 2 predicted the wild-type and mutant 3D structures, followed by quality assessment via PROCHECK. Functional domain analysis of RasGEF, RASGEF_NTER, and RA domains was performed, and BIOVIA Discovery Studio Visualizer 2024 was used to evaluate structural and physicochemical changes. Results: The analysis of 81 RGL3 variants identified 5 likely benign and 76 variants of uncertain significance (VUS), all of which were missense mutations. Structural modeling using AlphaFold 2 revealed three key domains: RasGEF_NTER, RasGEF, and RA, where mutations induced conformational changes. Ramachandran plot validation confirmed 79.7% of residues in favored regions, indicating an overall reliable structure. Moreover, mutations within RasGEF and RA domains altered polarity, charge, and stability, suggesting potential functional disruptions. These findings provide insight into the structural consequences of RGL3 mutations, contributing to further functional assessments. Discussion & Conclusion: The identified RGL3 mutations induced physicochemical alterations in key domains, affecting charge, polarity, hydrophobicity, and flexibility. These changes likely disrupt interactions with Ras-like GTPases, impairing GDP-GTP exchange and cellular signaling. Structural analysis highlighted mutations in RasGEF and RA domains that may interfere with activation states, potentially affecting protein function and stability. These findings suggest that mutations in RGL3 could have functional consequences, emphasizing the need for further molecular and functional studies to explore their pathogenic potential.
คณะสถาปัตยกรรม ศิลปะและการออกแบบ
A conceptual model inspired by Art Deco art, using the luxury, elegance, balance and the use of black and gold, which are the characteristics of Art Deco art, to create a conceptual model that is balanced, stable, elegant, sequential to look dynamic and uses black and gold to express Art Deco luxury.
คณะเทคโนโลยีการเกษตร
This study aimed to investigate the efficacy of lime containing more than 50% calcium oxide and not less than 29% magnesium oxide in enhancing water alkalinity for Pacific White Shrimp (Litopenaeus vannamei) aquaculture. The experiment was conducted at concentrations of 0, 5, 10, 15, and 20 ppm over a 48-hour period, with data collected at 0, 3, 6, 12, 24, 36, and 48 hours. Results demonstrated that lime exhibited high dissolution efficiency (65-86%) within the first hour and reached complete dissolution (98.5-98.6%) within 6 hours. The pH values initially increased proportionally with lime concentration, gradually decreased during 3-12 hours, before stabilizing. Total alkalinity showed significant increase during the first 3-6 hours and remained stable until the end of the experiment. Statistical analysis revealed that both concentration and time significantly affected all parameters (p < 0.001)