Publications by authors named "Vu Doan"

Article Synopsis
  • The study compares primary closure versus T-tube drainage methods after laparoscopic common bile duct exploration (LCBDE) in elderly patients (≥65 years).
  • Data collected from two Vietnamese hospitals was analyzed, revealing that primary closure resulted in shorter operating times and hospital stays compared to T-tube drainage.
  • Both methods had similar long-term stone recurrence rates, suggesting that primary closure is a safe and effective option for elderly patients with biliary issues.
View Article and Find Full Text PDF

Cancer remains a formidable global health challenge, demanding the exploration of innovative treatment modalities with minimized side effects. One promising avenue involves the synergistic integration of targeted photothermal/photodynamic therapy (PTT/PDT), utilizing specially designed functional nanomaterials for precise cancer diagnosis and treatment. This study introduces a composite biomaterial, anti-epidermal growth factor receptor-conjugated manganese core phthalocyanine bismuth (anti-EGFR-MPB), synthesized for precise cancer imaging and treatment.

View Article and Find Full Text PDF

Objective: Thoracoscopic sympathicotomy is a well-established treatment for severe palmar hyperhidrosis. This study evaluates the safety and efficacy of a novel one-stage, bilateral, single-port laser sympathicotomy with minimal dissection.

Methods: We retrospectively reviewed 73 patients with severe palmar hyperhidrosis who underwent this novel surgical technique between June 2023 and October 2023.

View Article and Find Full Text PDF

The growing field of nanotechnology has witnessed numerous advancements over the past few years, particularly in the development of engineered nanoparticles. Compared with bulk materials, metal nanoparticles possess more favorable properties, such as increased chemical activity and toxicity, owing to their smaller size and larger surface area. Metal nanoparticles exhibit exceptional stability, specificity, sensitivity, and effectiveness, making them highly useful in the biomedical field.

View Article and Find Full Text PDF

Deep learning (DL) is becoming more popular as a useful tool in various scientific domains, especially in chemistry applications. In the infrared spectroscopy field, where identifying functional groups in unknown compounds poses a significant challenge, there is a growing need for innovative approaches to streamline and enhance analysis processes. This study introduces a transformative approach leveraging a DL methodology based on transformer attention models.

View Article and Find Full Text PDF

Hydroxyapatite (HAp), a well-known biomaterial, has witnessed a remarkable evolution over the years, transforming from a simple biocompatible substance to an advanced functional material with a wide range of applications. This abstract provides an overview of the significant advancements in the field of HAp and its journey towards becoming a multifunctional material. Initially recognized for its exceptional biocompatibility and bioactivity, HAp gained prominence in the field of bone tissue engineering and dental applications.

View Article and Find Full Text PDF
Article Synopsis
  • Recent advancements in nanomaterials, specifically hydroxyapatite (HAp) doped with rare-earth elements like Yb and Gd, have shown promise for bioimaging applications due to improved bioactivity and imaging properties.
  • The synthesis of Yb-Gd-HAp nanoparticles involved a wet precipitation method, followed by characterizing them for crystal structure, functional groups, and surface area, alongside the development of an imaging contrast agent by conjugating with IR783 dye and folic acid.
  • In vitro studies confirmed the biocompatibility of the nanoparticles, and photodynamic therapy was tested on MDA-MB-231 breast cancer cells, demonstrating effective photosensitizing properties and reactive oxygen species generation.
View Article and Find Full Text PDF

This study aimed to improve the mechanical properties of a composite material consisting of waste leather fibers (LF) and nitrile rubber (NBR) by partially replacing LF with waste polyamide fibers (PA). A ternary recycled composite NBR/LF/PA was produced by a simple mixing method and vulcanized by compression molding. The mechanical properties and dynamic mechanical properties of the composite were investigated in detail.

View Article and Find Full Text PDF
Article Synopsis
  • A specific genetic risk gene linked to Alzheimer's disease (AD) is overexpressed in patients, but its role in the disease progression remains unclear.
  • Researchers used a LC-MS/MS method to analyze brain heparan sulfate (HS) and found a sevenfold increase of a specific 3-sulfated HS in AD patients compared to other tauopathies.
  • The study suggests that the overexpression of the genetic risk gene may facilitate tau pathology spread by affecting tau cellular uptake, pointing to a new potential therapeutic target for Alzheimer's disease.
View Article and Find Full Text PDF

We report the observation of a third crystalline polymorph, "form III", of the well-studied electron-transporting conjugated polymer P(NDI2OD-T2) that exhibits end-on texture. This third polymorph of P(NDI2OD-T2) is distinguished from other polymorphs by having two monomer units incorporated along the backbone-stacking direction, resulting in a doubling of the axis of the unit cell. Form III crystallites are realized by melt-annealing a thin film followed by slow cooling.

View Article and Find Full Text PDF

The efficiency of a cancer therapy agent depends on its ability to eliminate tumors without endangering neighboring healthy tissues. In this present study, a novel multifunctional property enriched nanostructured system was synthesized on manganese-doped hydroxyapatite (Mn-HAp) conjugated with counter folic acid (FA) IR-783 fluorescence dye. The tailored synthesis of nano rod-shaped Mn-HAp nanoparticles with high surface area allows to conjugate FA/IR-783 dye which enhanced retention time during circulation.

View Article and Find Full Text PDF

Introduction: The advanced features of plasmonic nanomaterials enable initial high accuracy detection with different therapeutic intervention. Computational simulations could estimate the plasmonic heat generation with a high accuracy and could be reliably compared to experimental results. This proposed combined theoretical-experimental strategy may help researchers to better understand other nanoparticles in terms of plasmonic efficiency and usability for future nano-theranostic research.

View Article and Find Full Text PDF

This study aims to estimating the prevalence of type 2 diabetes and prediabetes among adult from 30 to 69 years old and assess the association of risk factor with the conditions. A total of 5244 aged 30 to 69 years old were participated in this cross-sectional study, using nationally representative sampling frame. All participants were taking blood sample to measure fasting blood glucose level and 2-hour postload oral glucose tolerance test by National Hospital of Endocrinology, Vietnam.

View Article and Find Full Text PDF
Article Synopsis
  • * Using a co-precipitation approach, researchers created Co-HAp by replacing calcium ions with cobalt, and various techniques were applied to confirm the successful doping and characterize the nanoparticles.
  • * Results showed that Co-HAp nanoparticles are non-toxic to breast cancer cell lines, have high drug loading capacity for doxorubicin (DOX), and exhibit enhanced fluorescence properties, making them suitable for drug delivery and imaging applications.
View Article and Find Full Text PDF

Nanosized multi-drug delivery systems provide synergistic effects between drugs and bioactive compounds, resulting in increased overall efficiency and restricted side effects compared to conventional single-drug chemotherapy. In this study, we develop an amphiphilic heparin-poloxamer P403 (HP403) nanogel that could effectively co-load curcuminoid (Cur) and cisplatin hydrate (CisOH) (HP403@CisOH@Cur) via two loading mechanisms. The HP403 nanogels and HP403@CisOH@Cur nanogels were closely analyzed with H-NMR spectroscopy, FT-IR spectroscopy, TEM, and DLS, exhibiting high stability in spherical forms.

View Article and Find Full Text PDF

Typically, disaster damages are measured separately in four dimensions: fatalities, injuries, dislocations, and the financial damage that they wreak. Noy (2016) developed a lifeyears index of disaster damage which aggregates these disparate measures. Here, we use this lifeyears index to assess the costs of the COVID-19 pandemic across countries and compare these costs to the average annual costs of all other disasters that have occurred in all countries in the past 20 years.

View Article and Find Full Text PDF

Decellularization technology is a process that uses different methods such as physical, chemical or enzymatic methods in order to eliminate cellular remnants from original tissues or organs while minimizing any adverse effect on the structural properties, biological activity, and mechanical integrity of the remaining ECM. Regenerative medicine uses the most promising therapies to replace or regenerate tissues and organs in human, restore or establish normal functions lost due to disease or injury. By the combination between new biomaterials and cells, one of the goals of regenerative medicine is to create autologous grafts for transplantation therapies in the future.

View Article and Find Full Text PDF

A new muurolane-type sesquiterpene, a new flavone arabinofuranoside derivative, and other five known flavone arabinofuranoside derivatives were isolated from the leaves of (Annonaceae family). Their chemical structures were determined to be (1,6,7)-muurola-4,10(14)-diene-15-ol (), quercetin 3---D-apiofuranosyl-(1→2)--L-arabinofuranoside (), quercetin 3---L-rhamnopyranosyl-(1→2)--L-arabinofuranoside (), quercetin 3---L-arabinofuranoside (), kaempferol 3---D-apiofuranosyl-(1→2)--L-arabinofuranoside (), kaempferol 3---L-rhamnopyranosyl-(1→2)--L-arabinofuranoside (), and kaempferol 3---L-arabinofuranoside () by analyses of HR-ESI-MS and NMR spectral data. Compounds and containing monosaccharide, arabinofuranoside, potentially inhibited NO productions in LPS activated RAW264.

View Article and Find Full Text PDF

Imaging modalities combined with a multimodal nanocomposite contrast agent hold great potential for significant contributions in the biomedical field. Among modern imaging techniques, photoacoustic (PA) and fluorescence (FL) imaging gained much attention due to their non-invasive feature and the mutually supportive characteristic in terms of spatial resolution, penetration depth, imaging sensitivity, and speed. In this present study, we synthesized IR783 conjugated chitosan-polypyrrole nanocomposites (IR-CS-PPy NCs) as a theragnostic agent used for FL/PA dual-modal imaging.

View Article and Find Full Text PDF

In this study, we present the fabrication of nitrile butadiene rubber/waste leather fiber (NBR/WLF) composites with different weight percentages of WLF and NBR (0/100, 20/80, 30/70, 40/60, 50/50, 60/40 /). WLF was prepared by cutting the scrap leathers from the waste product of the Vietnamese leather industry. Subsequently, in order to make the short fibers, it was mixed by a hammer mill.

View Article and Find Full Text PDF

Prosthetic vascular graft infection is one of the most severe vascular surgery complications. Fibrin gel (FG) has many useful characteristics as biocompatibility, biodegradation, adhesion, and haemostasis to develop the local antibiotic delivery system. In this study, human plasma was collected from peripheral blood that was used to create fibrin gel by supplement ion Ca.

View Article and Find Full Text PDF

Truxinic acid sucrose diesters analogs possess interesting chemical structure by the presence of cyclobutane-ring and macrocyclic sucrose diesters moieties which are rarely found from natural sources. This paper describes the isolation and structural elucidation of four new sucrose diesters of substituted truxinic acids, trigohonbanosides A-D (1-4), from the leaves of Trigonostemon honbaensis. Their chemical structures were elucidated by HR-ESI-MS, NMR, and CD spectroscopic methods.

View Article and Find Full Text PDF

Two new norlignans, pouzolignan N () and pouzolignan O (), together with five known norlignans, pouzolignan F (), pouzolignan G (), pouzolignan H (), pouzolignan L (), and gnetifolin F () were isolated from the aerial parts of (Blume) Merr. Their chemical structures were elucidated via HR-ESI-MS and NMR spectroscopic methods. Absolute configurations at stereocenters were confirmed by comparisons of CD spectra with those of TD-DFT calculations.

View Article and Find Full Text PDF