1.Age, Comorbidities, and Outcomes following Hip Arthroplasty: A Retrospective Cohort Study from Vietnam
Dao Thi Ngoc NGUYEN ; Vu Ton Ngoc PHAN ; Huy Mach Thai TRAN ; Hung Quoc HA ; Hieu Minh DANG ; Phat Thanh TRAN ; Sang Thanh NGUYEN ; Phuc Tan Nguyen LE
Annals of Geriatric Medicine and Research 2026;30(2):217-227
Background:
While advanced age is a known risk factor for postoperative complications following hip arthroplasty, its role as an independent predictor versus a surrogate for comorbidity remains unclear, particularly in developing countries. This study aimed to investigate the independent impact of age on postoperative outcomes and explore the mediating role of key comorbidities in a resource-limited setting.
Methods:
We retrospectively reviewed 769 adult patients undergoing hip arthroplasty at a Vietnamese tertiary hospital (2021–2024), categorized into three groups: younger adults (18–64 years), older adults (65–79 years), and oldest old (≥80 years). The primary outcome was a composite of major postoperative complications. Multivariable logistic regression and structural equation modeling were used to identify independent predictors and assess mediation effects.
Results:
Among 769 patients, 363 were younger (47.2%), 241 older adults (31.3%), and 165 oldest old (21.5%). Complication rates increased significantly with age (18.7%, 36.9%, and 60.0%, respectively; p<0.001). However, multivariable adjustment showed that age was not an independent predictor. Instead, heart failure (adjusted odds ratio [aOR]=5.49, 95% confidence interval [CI] 2.19–13.74) and preoperative anemia (aOR=1.77, 95% CI 1.21– 2.59) were identified as independent risk factors. Mediation analysis revealed that the effect of age on complications was significantly mediated through preoperative anemia.
Conclusion
Increased postoperative risk in older adults is driven by comorbidity burden rather than chronological age. Preoperative anemia and heart failure are critical, independent predictors, with anemia acting as a key mediator for the effects of age. Individualized correction of modifiable comorbidities may be more beneficial than using age alone to assess surgical risk.
2.Medical treatment prior to micro-TESE.
Sujoy DASGUPTA ; Thanh Sang LE ; Amarnath RAMBHATLA ; Rupin SHAH ; Ashok AGARWAL
Asian Journal of Andrology 2025;27(3):342-354
Except in cases of hypogonadotropic hypogonadism, the use of medical therapy before microsurgical testicular sperm extraction (micro-TESE) is controversial. In some studies, hormone therapy has been shown to improve the possibility of sperm retrieval during micro-TESE and even lead to the presence of sperm in the ejaculate in some cases, thereby obviating the need for micro-TESE. However, their routine use before micro-TESE in cases of nonobstructive azoospermia (NOA) being associated with hypergonadotropic hypogonadism and eugonadism (normogonadotropic condition) has not been supported with robust evidence. In this review, we discuss different types of medical therapy used before micro-TESE for NOA, their risks and benefits, and the available evidence surrounding their use in this setting.
Humans
;
Male
;
Azoospermia/therapy*
;
Sperm Retrieval
;
Hypogonadism/complications*
;
Microsurgery
3.Dronedarone hydrochloride enhances the bioactivity of endothelial progenitor cells via regulation of the AKT signaling pathway
Jian ZHANG ; Thi Hong VAN LE ; Vinoth Kumar RETHINESWARAN ; Yeon-Ju KIM ; Woong Bi JANG ; Seung Taek JI ; Thanh Truong GIANG LY ; Jong Seong HA ; Jisoo YUN ; Jae Hun CHEONG ; Jinsup JUNG ; Sang-Mo KWON
The Korean Journal of Physiology and Pharmacology 2021;25(5):459-466
Cardiovascular disease (CVD) and its complications are the leading cause of morbidity and mortality in the world. Because of the side effects and incomplete recovery from current therapy, stem cell therapy emerges as a potential therapy for CVD treatment, and endothelial progenitor cell (EPC) is one of the key stem cells used for therapeutic applications. The effect of this therapy required the expansion of EPC function. To enhance the EPC activation, proliferation, and angiogenesis using dronedarone hydrochloride (DH) is the purpose of this study. DH received approval for atrial fibrillation treatment and its cardiovascular protective effects were already reported. In this study, DH significantly increased EPC proliferation, tube formation, migration, and maintained EPCs surface marker expression. In addition, DH treatment up-regulated the phosphorylation of AKT and reduced the reactive oxygen species production. In summary, the cell priming by DH considerably improved the functional activity of EPCs, and the use of which might be a novel strategy for CVD treatment.
4.Dronedarone hydrochloride enhances the bioactivity of endothelial progenitor cells via regulation of the AKT signaling pathway
Jian ZHANG ; Thi Hong VAN LE ; Vinoth Kumar RETHINESWARAN ; Yeon-Ju KIM ; Woong Bi JANG ; Seung Taek JI ; Thanh Truong GIANG LY ; Jong Seong HA ; Jisoo YUN ; Jae Hun CHEONG ; Jinsup JUNG ; Sang-Mo KWON
The Korean Journal of Physiology and Pharmacology 2021;25(5):459-466
Cardiovascular disease (CVD) and its complications are the leading cause of morbidity and mortality in the world. Because of the side effects and incomplete recovery from current therapy, stem cell therapy emerges as a potential therapy for CVD treatment, and endothelial progenitor cell (EPC) is one of the key stem cells used for therapeutic applications. The effect of this therapy required the expansion of EPC function. To enhance the EPC activation, proliferation, and angiogenesis using dronedarone hydrochloride (DH) is the purpose of this study. DH received approval for atrial fibrillation treatment and its cardiovascular protective effects were already reported. In this study, DH significantly increased EPC proliferation, tube formation, migration, and maintained EPCs surface marker expression. In addition, DH treatment up-regulated the phosphorylation of AKT and reduced the reactive oxygen species production. In summary, the cell priming by DH considerably improved the functional activity of EPCs, and the use of which might be a novel strategy for CVD treatment.
5. Free radical scavenging and anti-proliferative activities of avocado (Persea americana Mill.) seed extract
Thanh Sang VO ; Phuong LE UYEN ; Dai Hung NGO
Asian Pacific Journal of Tropical Biomedicine 2019;9(3):91-97
Objective: To investigate the chemical components and biological activities of avocado seed extract and fractions in order to determine the nutritional and pharmaceutical values of avocado seed. Methods: Various organic solvents were applied for extraction and fractionation of avocado seed. 1,1-diphenyl-2-picryl-hydrazyl, 2,2-azinobis-3-ethyl benzothiazoline-6-sulfonic acid, and DNA oxidation assays were applied for investigation of free radical scavenging activity. Nitric oxide production was measured by Griess reaction assay. Moreover, MTT assay was used to measure cancer cell growth inhibition. Results: The result indicated that the avocado seed contains (7.14 ± 0.40) g lipid/100 g, (1.67 ± 0.03) g protein/100 g, (54.0 ± 1.2) g carbohydrate/100 g, and (62.0 ± 2.3) mg gallic acid equivalent/g dried weight extract. Moreover, dichloromethane and ethyl acetate were revealed to be the highest free radical scavenging fractions with IC
6.Anti-inflammatory Triterpenes and Glyceryl Glycosides from Kandelia candel (L.) Druce.
Le Duc DAT ; Nguyen Phuong THAO ; Bui Huu TAI ; Bui Thi Thuy LUYEN ; Seo Young YANG ; Sohyun KIM ; Jung Eun KOO ; Young Sang KOH ; Nguyen The CUONG ; Nguyen Hoai NAM ; Nguyen Van THANH ; Phan Van KIEM ; Chau Van MINH ; Young Ho KIM
Natural Product Sciences 2015;21(3):150-154
Phytochemical investigation of Kandelia candel resulted in the isolation of six triterpenes (1 - 5) and two glyceryl glycosides (6 and 7) and their structures were determined by comparing the spectroscopic data with those of reported values. In present study, we described the inhibitory effects of fractions and isolated compounds from K. candel on pro-inflammatory cytokines (IL-12 p40, IL-6, and TNF-alpha) production in lipopolysaccharide (LPS) stimulated bone marrow-derived dendritic cells (BMDCs). Results indicated that compounds 3, 6, and 7 showed potent inhibition on IL-6 production (IC50 values at less than 0.5 microM, respectively). Meanwhile, compounds 6 and 7 exhibited strong inhibitory effects on the production of TNF-alpha (IC50 values of 1.7 +/- 0.1 and 5.5 +/- 0.2 microM). Compounds 1 and 3 were also showed the inhibitory effects on IL-12 p40 production (IC50 values of 8.9 +/- 0.4 and 3.3 +/- 0.1 microM, respectively).
Cytokines
;
Dendritic Cells
;
Glycosides*
;
Interleukin-12
;
Interleukin-6
;
Rhizophoraceae*
;
Triterpenes*
;
Tumor Necrosis Factor-alpha
7.Identification of Anthocyanin from The Extract of Soybean Seedcoat.
Sun Mi PARK ; Jina KIM ; Tran Huu DUNG ; Le Thanh DO ; Do Thi Anh THU ; Mi Kyung SUNG ; Jong Sang KIM ; Hoon YOO
International Journal of Oral Biology 2011;36(2):59-64
Anthocyanins are naturally occuring phytochemicals and the main components of the coloring of plants, flowers and fruits. They are known to elicit antioxidative, anti-inflammatory and cancer preventive activity. In this study, we investigated anthocyanins in black / yellow soybean seedcoats using different methods of detection - thin layer chromatography (TLC), capillary zone electrophoresis (CZE) and HPLC analysis. The anthocyanins in soybean seedcoats were extracted by five independent methods of extraction and the aglycons (anthocyanidins) of the corresponding anthocyanins were prepared by acid mediated hydrolysis. The anthocyanin / anthocyanidin in black soybean seedcoat showed characteristic TLC mobility, CZE electrophoretic retention and HPLC migration time while little of anthocyanins were detected from yellow soybean seedcoat. The extracted anthocyanins showed pH dependent retention time in CZE and spectral change in UV-Vis spectrum. HPLC analysis of the hydrolyzed extract of black soybean seedcoat identified the presence of four anthocyanidins. The major anthocyanin in black soybean seedcoat was cyanin (cyanidin-3-O-glucoside), with the relative order of anthocyanidin in cyanidin > delphinidin > petunidin > pelargonidin.
Anthocyanins
;
Chromatography, High Pressure Liquid
;
Chromatography, Thin Layer
;
Electrophoresis, Capillary
;
Flowers
;
Fruit
;
Hydrogen-Ion Concentration
;
Hydrolysis
;
Retention (Psychology)
;
Soybeans

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