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1.
Medicina (Kaunas) ; 59(11)2023 Nov 10.
Artículo en Inglés | MEDLINE | ID: mdl-38004029

RESUMEN

Background and Objectives: Lipid-lowering agents such as ezetimibe are recommended in uncontrolled hyperlipidemia for primary and secondary prevention of cardiovascular disease. Carotid intima-media thickness (CIMT) is a surrogate marker of atherosclerosis and a predictor of cardiovascular and cerebral events. The effects of ezetimibe on CIMT have been inconsistently reported. The aim of this meta-analysis is to compare the effects of ezetimibe/statin and statin alone therapies on CIMT reduction. Materials and Methods: The PubMed, Embase, and Cochrane library databases were searched for randomized controlled trials (RCTs) published prior to 26 January 2023 with the MeSH keywords 'Ezetimibe' and 'Carotid Intima-Media Thickness'. The results were presented as standard mean difference (SMD) with 95% confidence intervals using the random-effect model method, and heterogeneity was assessed. Subgroup, meta-regression, and sensitivity analyses were conducted. Results: Five RCTs with 642 participants were included. CIMT reduction was not significantly different between the ezetimibe/statin and statin alone groups. However, in subgroup analyses, CIMT in the ezetimibe/statin group was significantly reduced in patients with non-familial hypercholesterolemia (SMD: -0.34 mm and p = 0.002) and in patients with secondary prevention (SMD: -0.38 mm and p = 0.002). The low-density lipoprotein cholesterol level was significantly reduced in the ezetimibe/statin group (SMD: -0.58 mg/dL and p < 0.001). Conclusions: The effect of ezetimibe on CIMT reduction was shown in non-familial hypercholesterolemia and secondary prevention. These results suggest that the efficacy of ezetimibe may vary with potential CIMT reduction benefits in certain subpopulations.


Asunto(s)
Anticolesterolemiantes , Azetidinas , Inhibidores de Hidroximetilglutaril-CoA Reductasas , Hipercolesterolemia , Humanos , Inhibidores de Hidroximetilglutaril-CoA Reductasas/uso terapéutico , Ezetimiba/uso terapéutico , Grosor Intima-Media Carotídeo , Hipercolesterolemia/tratamiento farmacológico , Anticolesterolemiantes/uso terapéutico , Azetidinas/uso terapéutico , LDL-Colesterol , Ensayos Clínicos Controlados Aleatorios como Asunto , Quimioterapia Combinada
2.
Lipids Health Dis ; 20(1): 104, 2021 Sep 12.
Artículo en Inglés | MEDLINE | ID: mdl-34511128

RESUMEN

BACKGROUND: Colorectal cancer (CRC) is a malignancy of the large intestine, whose development and prognosis have been demonstrated to be associated with altered lipid metabolism. High cholesterol intake is associated with an increased risk of CRC, and elevated serum cholesterol levels are known to be correlated with risk of developing CRC. Niemann-Pick C1-Like 1 (NPC1L1), a target of ezetimibe, plays an essential role in the absorption of intestinal cholesterol. However, whether the altered expression of NPC1L1 affects CRC development and prognosis is currently unknown. METHODS: Data corresponding to patients with CRC were obtained from The Cancer Genome Atlas (TCAG). Datasets from the Genome Data Analysis Center (GDAC) platform were analyzed to compare the expression of NPC1L1 in normal and CRC tissues using the Mann-Whitney U test and chi-square test. Further, the datasets from the Gene Expression Omnibus (GEO) database were analyzed. The log-rank test and multivariate Cox proportional hazard regression analysis were performed to determine whether NPC1L1 significantly affects the prognosis of CRC. RESULTS: The expression of NPC1L1 was found to be upregulated in CRC and was significantly associated with the N and pathological stages but not with the histological type, age, and sex. Increased NPC1L1 expression in CRC was related to poor patient survival, as evidenced by the Kaplan-Meier and multivariate regression analyses. CONCLUSIONS: As high expression of NPC1L1 was associated with CRC development, pathological stage, and prognosis, NPC1L1 can serve as an independent prognostic marker for CRC.


Asunto(s)
Biomarcadores de Tumor/genética , Colesterol/sangre , Neoplasias Colorrectales/genética , Proteínas de Transporte de Membrana/genética , Enfermedad de Niemann-Pick Tipo C/genética , Factores de Edad , Anciano , Anciano de 80 o más Años , Anticolesterolemiantes/uso terapéutico , Atlas como Asunto , Biomarcadores de Tumor/sangre , Neoplasias Colorrectales/diagnóstico , Neoplasias Colorrectales/tratamiento farmacológico , Neoplasias Colorrectales/mortalidad , Conjuntos de Datos como Asunto , Ezetimiba/uso terapéutico , Femenino , Expresión Génica , Humanos , Metabolismo de los Lípidos/efectos de los fármacos , Metabolismo de los Lípidos/genética , Masculino , Proteínas de Transporte de Membrana/sangre , Persona de Mediana Edad , Estadificación de Neoplasias , Enfermedad de Niemann-Pick Tipo C/diagnóstico , Enfermedad de Niemann-Pick Tipo C/tratamiento farmacológico , Enfermedad de Niemann-Pick Tipo C/mortalidad , Pronóstico , Modelos de Riesgos Proporcionales , Factores Sexuales , Análisis de Supervivencia
3.
Int J Mol Sci ; 22(12)2021 Jun 13.
Artículo en Inglés | MEDLINE | ID: mdl-34199182

RESUMEN

The gut microbiota has been known to modulate the immune responses in chronic liver diseases. Recent evidence suggests that effects of dietary foods on health care and human diseases are related to both the immune reaction and the microbiome. The gut-microbiome and intestinal immune system play a central role in the control of bacterial translocation-induced liver disease. Dysbiosis, small intestinal bacterial overgrowth, translocation, endotoxemia, and the direct effects of metabolites are the main events in the gut-liver axis, and immune responses act on every pathways of chronic liver disease. Microbiome-derived metabolites or bacteria themselves regulate immune cell functions such as recognition or activation of receptors, the control of gene expression by epigenetic change, activation of immune cells, and the integration of cellular metabolism. Here, we reviewed recent reports about the immunologic role of gut microbiotas in liver disease, highlighting the role of diet in chronic liver disease.


Asunto(s)
Dieta , Microbioma Gastrointestinal/inmunología , Sistema Inmunológico/microbiología , Hepatopatías/inmunología , Hepatopatías/microbiología , Animales , Humanos
4.
Med Princ Pract ; 30(6): 527-534, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34148043

RESUMEN

OBJECTIVE: The objective of this study is to evaluate irritable bowel syndrome (IBS) as a risk factor for osteoporosis and osteoporotic fracture in Korean women after controlling for basic confounding factors and considering detailed demographic and clinical information. SUBJECTS AND METHODS: We performed a nationwide population-based retrospective cohort analysis and matched every IBS case with a non-IBS case at a 1:4 frequency ratio based on age. The population consisted of female patients with data in the Health Insurance Review and Assessment (HIRA) database from 2002 to 2010. To determine the risk of osteoporosis and osteoporotic fracture in IBS and non-IBS patients, hazard ratios (HRs) with 95% confidence intervals (CI) were estimated using Cox proportional hazards regression models, adjusting for confounding variables, such as the area of residence, health insurance type, and economic status. RESULTS: We identified 1,017,468 patients in the HIRA database with data from 2002 to 2010 who could potentially be included in the cohort. Among these, we identified 1,545 (11.4%) women (age >19 years) with newly diagnosed IBS (IBS group). Additionally, 6,180 patients without IBS and age-matched to the IBS group were selected. Cox modeling revealed that the crude HRs for osteoporosis and osteoporotic fractures in patients with IBS were 1.476 (95% CI, 1.241-1.754) and 1.427 (95% CI, 1.086-1.876), respectively. CONCLUSION: Our data showed an increased incidence of osteoporosis and osteoporotic fractures in women with IBS compared with age-matched controls.


Asunto(s)
Síndrome del Colon Irritable/epidemiología , Osteoporosis/epidemiología , Fracturas Osteoporóticas/epidemiología , Adulto , Anciano , Femenino , Humanos , Incidencia , Síndrome del Colon Irritable/complicaciones , Persona de Mediana Edad , Osteoporosis/complicaciones , Premenopausia , República de Corea/epidemiología , Estudios Retrospectivos , Factores de Riesgo , Adulto Joven
5.
J Pak Med Assoc ; 69(12): 1771-1776, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31853101

RESUMEN

OBJECTIVE: To investigate the association between serum C-reactive protein level and health-related quality of life, and to assess the relationship between the two in terms of controlling for obesity and other covariates. METHODS: The cross-sectional study was conducted retrospectively at university hospital in Yangsan from January to December 2017 using the nationally representative 2015 Korea National Health and Nutrition Examination Survey (KNHANES). High C-reactive protein was defined as level ≥1.0mg/L. Health-related quality of life was assessed using the Euro-Quality of Life-5 dimensions tool. The association between high C-reactive protein and health-related quality of life was analysed using logistic regression analysis and was adjusted for variables. The subjects were categorised into four groups according to the level of C-reactive protein, and the presence of obesity was analysed. RESULTS: Of the 3376 subjects, 1,413(42%) were men and 1,963(58%) were women. C-reactive protein level was <1.0 in 2490(73.7%) subjects and ≥1.0 in 886(26.2%). High CRP level was associated with low health-related quality of life for mobility and usual activities (p<0.05). However, in multivariable logistic model, the associations ceased to be statistically significant (p>0.05) after adjusting for the presence of obesity. CONCLUSIONS: Obesity was found to play an important role in the association between C-reactive protein and healthrelated quality of life in Korean population.


Asunto(s)
Proteína C-Reactiva/análisis , Obesidad , Calidad de Vida , Adulto , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Obesidad/sangre , Obesidad/epidemiología , República de Corea/epidemiología
6.
Mediators Inflamm ; 2015: 524291, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26538829

RESUMEN

The purpose of the present study was to investigate multiple anthropometric parameters used to evaluate obesity, particularly visceral abdominal fat area, and various metabolic parameters including malondialdehyde (MDA) as an oxidative stress marker. We evaluated various measures of obesity, including body mass index (BMI), waist circumference (WC), sagittal abdominal diameter, fat percentages using dual-energy X-ray absorptiometry, visceral fat area (VFA), subcutaneous fat area, multiple biomarkers related to metabolic disease, and urinary MDA, in 73 asymptomatic middle-aged men who were not severely obese. We examined relationships between multiple measures of obesity, metabolic markers, and urinary MDA levels and evaluated associations between VFA and urinary MDA. In the visceral obesity group, γ-glutamyl transferase (GGT), uric acid, and urinary MDA levels were significantly higher than in the nonvisceral obesity group (P = 0.008, P = 0.002, and P = 0.018). Urinary MDA (r = 0.357, P = 0.002) and uric acid (r = 0.263, P = 0.027) levels were only significantly positively correlated with VFA among measures of obesity. Urinary MDA, serum GGT, and serum CRP were significantly positively associated with VFA (P = 0.001, P = 0.046, and P = 0.023, resp.), even after adjusting for BMI and WC.


Asunto(s)
Malondialdehído/orina , Obesidad Abdominal/orina , Adulto , Antropometría , Biomarcadores/orina , Índice de Masa Corporal , Proteína C-Reactiva/metabolismo , Estudios Transversales , Humanos , Grasa Intraabdominal/metabolismo , Masculino , Persona de Mediana Edad , Obesidad/orina , Estrés Oxidativo , Análisis de Regresión , Fumar , Ácido Úrico/sangre , Ácido Úrico/metabolismo , Circunferencia de la Cintura , gamma-Glutamiltransferasa/sangre , gamma-Glutamiltransferasa/metabolismo
7.
Bioconjug Chem ; 25(11): 2004-11, 2014 Nov 19.
Artículo en Inglés | MEDLINE | ID: mdl-25250772

RESUMEN

Poly(ethylene glycol)-based hydrogels containing thiol-reactive maleimide functional groups is prepared via a Diels-Alder/retro Diels-Alder reaction sequence using a masked maleimide monomer. Bulk and micropatterned hydrogels containing varying amounts of the thiol-reactive maleimide functional group are fabricated at ambient temperature. During the fabrication, the reactive maleimide functional group in the monomer is masked with a furan moiety and then unmasked to its reactive form via the retro-Diels-Alder reaction. The reactive maleimide groups embedded within the hydrogel are amenable to facile and efficient functionalization with thiol-containing molecules such as fluorescent dyes. Furthermore, these hydrogels are readily biotinylated using the nucleophilic thiol-ene conjugation to enable immobilization of streptavidin onto the hydrogel patterns to achieve facile bioimmobilization. Notably, the extent of functionalization of these hydrogels can be easily tailored by varying the amount of reactive handles incorporated during their fabrication.


Asunto(s)
Hidrogeles/química , Proteínas Inmovilizadas/química , Maleimidas/química , Estreptavidina/química , Compuestos de Sulfhidrilo/química , Fluoresceína-5-Isotiocianato/química , Modelos Moleculares , Polietilenglicoles/química , Polimerizacion , Ácidos Polimetacrílicos/química , Conformación Proteica , Temperatura
8.
Bioorg Med Chem Lett ; 24(17): 4271-5, 2014 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-25082126

RESUMEN

Takeda G-protein-coupled receptor 5 (TGR5) is a promising molecular target for metabolic diseases. A series of 4-(2,5-dichlorophenoxy)pyrimidine and cyclopropylmalonamide derivatives were synthesized as potent agonists of TGR5 based on a bioisosteric replacement strategy. Several compounds exhibited improved potency, compared to a reference compound with a pyridine scaffold. The pharmacokinetic profile of the representative compound 18 was considered moderate.


Asunto(s)
Inhibidores Enzimáticos del Citocromo P-450/farmacología , Sistema Enzimático del Citocromo P-450/metabolismo , Descubrimiento de Drogas , Malonatos/farmacología , Pirimidinas/farmacología , Receptores Acoplados a Proteínas G/agonistas , Animales , Disponibilidad Biológica , Inhibidores Enzimáticos del Citocromo P-450/administración & dosificación , Inhibidores Enzimáticos del Citocromo P-450/química , Relación Dosis-Respuesta a Droga , Células HEK293 , Humanos , Malonatos/administración & dosificación , Malonatos/química , Ratones , Ratones Endogámicos ICR , Microsomas Hepáticos/efectos de los fármacos , Microsomas Hepáticos/enzimología , Microsomas Hepáticos/metabolismo , Estructura Molecular , Pirimidinas/administración & dosificación , Pirimidinas/química , Relación Estructura-Actividad
9.
Nurs Crit Care ; 19(6): 281-91, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-24165109

RESUMEN

BACKGROUND: In Korea, regular screening for delirium is not considered essential. In addition, delirium is often associated with vague concepts, making it harder to identify high-risk patients and impeding decision-making. AIMS: To assess the impact of the Automatic PREdiction of DELirium in Intensive Care Units (APREDEL-ICU) system on nursing-sensitive and patient outcomes for surgical ICU patients and to evaluate nurse satisfaction with the system and its usability. METHODS: A pre-post research design was adopted. Our study included 724 patients admitted before the implementation of the APREDEL-ICU (January to December 2010) and 1111 patients admitted after the system was installed (May 2011 to April 2012). The APREDEL-ICU uses a pop-up window message to inform the nursing staff of patients at risk for delirium, allowing evidence-based nursing interventions to be applied to the identified patients. A total of 42 nurses were surveyed to determine the system's usability and their level of satisfaction with it. RESULTS: After the implementation of APREDEL-ICU, high-risk patients, determined using a prediction algorithm, showed a slight decrease in the incidence of delirium, but the changes were not significant. However, significant decreases in the number and duration of analgesic/narcotic therapies were observed after the implementation of the system. Nurse self-evaluation results showed an improvement in all categories of knowledge regarding delirium care. CONCLUSION: The use of a prediction and alerting system for ICU patients at high risk of delirium showed a potential increase in the quality of delirium care, including early detection and proper intervention.


Asunto(s)
Delirio/diagnóstico , Delirio/enfermería , Unidades de Cuidados Intensivos , Tamizaje Masivo/instrumentación , Evaluación en Enfermería , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Algoritmos , Registros Electrónicos de Salud , Enfermería Basada en la Evidencia , Femenino , Humanos , Masculino , Persona de Mediana Edad , República de Corea , Factores de Riesgo
10.
Menopause ; 31(1): 26-32, 2024 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-38016167

RESUMEN

OBJECTIVE: Menarche and menopause are associated with muscle loss and strength in women. Handgrip strength (HGS) is a reliable measurement method of muscle strength. However, it is unclear whether the entire reproductive period, which encompasses both menarche and menopause, is associated with HGS in postmenopausal women. METHODS: A total of 2,354 postmenopausal women aged 45-75 years were included for statistical analysis. The reproductive period was divided into tertiles, and HGS was divided into four quartiles. HGS was measured to evaluate muscle strength. Binary logistic regression analysis was used to identify significant predictors with the first quartile HGS, derived from quartile data. Multiple logistic regression analysis was used to assess the relationship between the reproductive period (exposure) and low HGS (outcome). RESULTS: We found that the more extended the reproductive period, the lower the risk of low absolute HGS. This trend persisted even after controlling for other variables. Specifically, the odds ratio for low absolute HGS was 0.752 (95% confidence interval [CI], 0.563-1.000) for the second tertile reproductive period and 0.683 (95% CI, 0.513-0.900) for the third tertile reproductive period, with the first tertile reproductive period as the reference. The odds ratio for low relative HGS was 0.761 (95% CI, 0.551-1.052) for the second tertile reproductive period and 0.732 (95% CI, 0.533-0.972) for the third tertile reproductive period, using first tertile reproductive period as the reference, after covariate adjustment. CONCLUSIONS: A longer reproductive period is associated with a decreased risk of low HGS in postmenopausal women.


Asunto(s)
Fuerza de la Mano , Menarquia , Posmenopausia , Femenino , Humanos , Estudios Transversales , Fuerza de la Mano/fisiología , Menopausia , Posmenopausia/fisiología , Reproducción
11.
J Clin Med ; 13(5)2024 Mar 06.
Artículo en Inglés | MEDLINE | ID: mdl-38592346

RESUMEN

Background: Sarcopenia is defined as the loss of muscle mass and strength and low physical performance, and it is closely related to the risk of cardiovascular disease and mortality. Pulse pressure (PP) is a biomarker of arterial stiffness and compliance. Elevated PP levels increase the risk of cardiovascular diseases and all-cause mortality. Nevertheless, the association between PP and sarcopenia has not yet been clearly established. Methods: Participant data were extracted from the Korea National Health and Nutrition Examination Survey conducted from 2014 to 2020. The study population was classified into three groups (PP < 40 mmHg, 40 mmHg ≤ PP < 60 mmHg, and PP ≥ 60 mmHg). PP was calculated by deducting the diastolic blood pressure from the systolic blood pressure. For handgrip strength, the maximum value measured with a grip dynamometer was adopted (weak handgrip strength: <28 kg for men, <18 kg for woman; normal handgrip strength: ≥28 kg for men, ≥18 kg for women). To determine the relationship between PP and the prevalence of weak handgrip strength, multiple logistic regression analysis was performed after adjusting for possible confounding factors. Results: The higher PP group had a higher age, body mass index; systolic blood pressure, prevalence of hypertension, diabetes, hyperlipidemia, and metabolic syndrome, and maximum handgrip strength. In all models, the prevalence of weak handgrip strength was significantly higher in the group with PP ≥ 60 mmHg compared to the control group (PP < 40 mmHg). Conclusions: Elevated PP was significantly associated with a higher prevalence of weak muscle strength. Thus, PP monitoring may be used to identify individuals at risk of sarcopenia and is helpful in improving health outcomes.

12.
Am J Hosp Palliat Care ; : 10499091241252977, 2024 May 16.
Artículo en Inglés | MEDLINE | ID: mdl-38752431

RESUMEN

BACKGROUND: Ketamine has been used to control refractory cancer pain as an adjuvant to opioids. We conducted a prospective phase II study to investigate the efficacy and safety of 5-day continuous intravenous infusion (CIVI) of Ketamine in terminally ill cancer patients with refractory cancer pain. METHODS: Hospitalized terminally ill cancer patients with refractory cancer pain were enrolled. Refractory cancer pain was indicated by requirements for 4 or more rescue opioids or pain intensity using numerical rating scale > personalized pain goal (PPG) despite of intravenous morphine equivalent daily dose (IV MEDD) ≥ 120 mg/day. The CIVI of ketamine was increased from .05 mg/kg/hour to .5 mg/kg/hour by .05 every 8 hours if pain intensity exceeded PPG or if number of rescue opioids ≥2 during prior 8 hours was required. The primary end-point was overall pain response rate, which indicates complete response (both rescue opioid ≤3/day and pain intensity ≤ PPG) plus partial response (rescue opioid ≤3/day), without unacceptable toxicities. RESULTS: Among 21 eligible patients enrolled between September 2019 and January 2023, 20 were analyzed. Most pain mechanisms were mixed type (n = 15, 75%), with neuropathic component (n = 17, 85%). The baseline background opioids were IV MEDD 186 mg/24hour (range, 124-592), number of rescue opioids was 6 (IQR, 5-9), and median PPG was 4 (IQR, 3-4). The overall pain response rate was 50% (n = 10) including 40% (n = 8) for complete pain response and 10% (n = 2) for partial pain response. CONCLUSION: This study showed efficacy of gradually increasing CIVI of ketamine for terminally ill cancer patients with refractory cancer pain. CIVI of ketamine could be a useful tool in these patients considering the limited treatment options. (NCT03362073, Initial Release: November 15, 2017).

13.
Korean J Fam Med ; 2024 Jul 05.
Artículo en Inglés | MEDLINE | ID: mdl-38965838

RESUMEN

Background: Skipping breakfast is associated with an increased risk of chronic inflammatory diseases. This study aimed to examine the association between breakfast-eating habits and inflammation, using high-sensitivity C-reactive protein (hs-CRP) as a marker. Methods: A total of 4,000 Korean adult males with no history of myocardial infarction, angina, stroke, diabetes, rheumatoid arthritis, cancer, or current smoking were included. Data from the 2016-2018 Korea National Health and Nutrition Examination Survey were used for analysis. The frequency of breakfast consumption was assessed through a questionnaire item in the dietary survey section asking participants about their weekly breakfast consumption routines over the past year. Participants were categorized into two groups, namely "0-2 breakfasts per week" and "3-7 breakfasts per week"; hs-CRP concentrations were measured through blood tests. Results: Comparing between the "infrequent breakfast consumption (0-2 breakfasts per week)" and "frequent breakfast consumption (3-7 breakfasts per week)" groups, the mean hs-CRP was found to be significantly higher in the "infrequent breakfast consumption" group, even after adjusting for age, body mass index, physical activity, alcohol consumption, systolic blood pressure, blood pressure medication, fasting blood glucose, and triglycerides (mean hs-CRP: frequent breakfast consumption, 1.36±0.09 mg/L; infrequent breakfast consumption, 1.17±0.05 mg/L; P-value=0.036). Conclusion: Less frequent breakfast consumption was associated with elevated hs-CRP levels. Further large-scale studies incorporating adjusted measures of daily eating patterns as well as food quality and quantity are required for a deeper understanding of the role of breakfast in the primary prevention of chronic inflammatory diseases.

14.
J Sep Sci ; 36(23): 3682-7, 2013 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-24106082

RESUMEN

A liquid chromatographic chiral stationary phase based on (+)-(18-crown-6)-2,3,11,12-tetracarboxylic acid was applied to the resolution of 15 analytes, including racemic rasagiline, a chiral drug for the treatment of Parkinson's disease, and its analogues. The composition of mobile phase was optimized to be ethanol/acetonitrile/acetic acid/triethylamine (80:20:0.2:0.3, v/v/v/v) by evaluating the chromatographic results for the resolution of five selected analytes under various mobile phase conditions. Under the optimized mobile phase conditions, racemic rasagiline was resolved quite well with a separation factor of 1.48 and resolution of 2.71 and its 14 analogues were also resolved reasonably well with separation factors of 1.06-1.54 and resolutions of 0.54-2.11. Among 15 analytes, racemic rasagiline was resolved best except for just one analyte. The analyte structure-enantioselectivity relationship indicated that racemic rasagiline has the most appropriate structural characteristics for resolution on the chiral stationary phase.


Asunto(s)
Cromatografía Liquida , Éteres Corona/química , Indanos/química , Antiparkinsonianos/química , Estructura Molecular , Estereoisomerismo
15.
Biomater Sci ; 11(2): 450-460, 2023 Jan 17.
Artículo en Inglés | MEDLINE | ID: mdl-36448995

RESUMEN

The level of collagen production critically determines skin wound contraction. If an intelligent skin drug delivery technology that enables collagen production in a specific wound skin area is developed, a breakthrough in wound healing treatment would be expected. However, such an intelligent drug delivery technology has not yet been developed as much as in the field of anticancer therapy. In this study, we propose a smart drug delivery system using polymeric nanovehicles (PNVs), in which the periphery is conjugated with a fibroblast-targeting collagen-derived peptide, KTTKS (Lys-Thr-Thr-Lys-Ser). We showed that surface engineering of PNVs with simultaneous PEGylation and peptide patching improved the dispersibility of PNVs, while promoting selective cellular uptake to fibroblasts via PAR-2 receptor-mediated endocytosis. In vitro collagen production and in vivo wound healing assays revealed that curcumin-loaded fibroblast-targeting PNVs significantly enhanced collagen production and wound healing activities, thus promising effective skin tissue regeneration.


Asunto(s)
Receptor PAR-2 , Cicatrización de Heridas , Piel , Colágeno/farmacología , Fibroblastos , Endocitosis
16.
ACS Mater Au ; 3(3): 265-272, 2023 May 10.
Artículo en Inglés | MEDLINE | ID: mdl-38089131

RESUMEN

Burn injury represents a major global public healthcare problem and has a significant health-economics impact. In this study, we report on a 3D printed poly(lactic-co-glycolic acid) (PLGA) dermal scaffold containing bioactive PLGA for burn wound healing. Bioactive brush copolymers containing pendant side chains of PLGA and PEGylated Arg-Gly-Asp tripeptide (RGD) or hyaluronic acid (HA) were synthesized by ring-opening metathesis polymerization (ROMP). These copolymers exhibited good thermal stability for material processing using melt-extrusion-based methods. The copolymers were blended with commercial PLGA, extruded into filaments and 3D printed using fused filament fabrication (FFF) methods with incorporated porosities. The 3D printed scaffolds demonstrated good biocompatibility in in vitro cell assays and in vivo murine models. Porcine study based on partial thickness burn wound model showed that these PLGA scaffolds facilitated re-epithelization with reduced inflammation as compared to the clinical gold standard for second-degree burn wound treatment, Biobrane. The bioactive PLGA scaffolds presented herein are beneficial in wound healing and have therapeutic potential in burn wounds treatment.

17.
Medicine (Baltimore) ; 102(52): e36644, 2023 Dec 29.
Artículo en Inglés | MEDLINE | ID: mdl-38206714

RESUMEN

Sarcopenia is characterized by a loss of muscle mass and strength and is associated with a high risk of cardiovascular events and increased mortality. Pulse pressure (PP) serves as a marker for changes in heart structure and function, as well as arterial stiffness. A high PP also increases the risk of cardiovascular disease and all-cause mortality. However, the relationship between PP and sarcopenia is poorly understood. We used the data of participants of the Korea National Health and Nutrition Examination Survey (KNHANES) of 2008 to 2011. Participants were divided into a control group (PP < 40 mm Hg) and a high-PP group (PP ≥ 40 mm Hg). PP was calculated by subtracting the diastolic blood pressure (DBP) from the systolic blood pressure (SBP), and the low muscle index was assessed using appendicular skeletal muscle mass (ASM) normalized by body mass index (BMI). Multiple logistic regression analyses were performed to examine the association between PP and the prevalence of low muscle mass, adjusting for potential confounders. The high-PP group had a higher age, SBP, DBP, and prevalence of hypertension, diabetes and hyperlipidemia than the control group. The high-PP group had a higher prevalence of low muscle mass than the control group in all models. A high PP is significantly associated with a higher prevalence of low muscle mass. Therefore, PP monitoring may help identify individuals at risk of sarcopenia and guide interventions to improve health outcomes.


Asunto(s)
Sarcopenia , Adulto , Humanos , Presión Sanguínea/fisiología , Sarcopenia/epidemiología , Estudios Transversales , Encuestas Nutricionales , Músculos , República de Corea/epidemiología , Factores de Riesgo
18.
Pharmaceuticals (Basel) ; 16(6)2023 Jun 05.
Artículo en Inglés | MEDLINE | ID: mdl-37375788

RESUMEN

Selective delivery of anticancer drug molecules to the tumor site enhances local drug dosages, which leads to the death of cancer cells while simultaneously minimizing the negative effects of chemotherapy on other tissues, thereby improving the patient's quality of life. To address this need, we developed reduction-responsive chitosan-based injectable hydrogels via the inverse electron demand Diels-Alder reaction between tetrazine groups of disulfide-based cross-linkers and norbornene groups of chitosan derivatives, which were applied to the controlled delivery of doxorubicin (DOX). The swelling ratio, gelation time (90-500 s), mechanical strength (G'~350-850 Pa), network morphology, and drug-loading efficiency (≥92%) of developed hydrogels were investigated. The in vitro release studies of the DOX-loaded hydrogels were performed at pH 7.4 and 5.0 with and without DTT (10 mM). The biocompatibility of pure hydrogel and the in vitro anticancer activity of DOX-loaded hydrogels were demonstrated via MTT assay on HEK-293 and HT-29 cancer cell lines, respectively.

19.
Menopause ; 30(6): 607-612, 2023 06 01.
Artículo en Inglés | MEDLINE | ID: mdl-37192838

RESUMEN

OBJECTIVE: Hyperuricemia is associated with metabolic and cardiovascular diseases and mortality. Efforts to lower the risk of hyperuricemia in various ways are needed as the prevalence of these diseases increases in postmenopausal women. Studies have shown that one of these methods is associated with adequate sleep duration, which is related to a low risk of hyperuricemia. Considering that it is difficult for people to get enough sleep in modern society, this study hypothesized that weekend catch-up sleep could be an alternative. To our knowledge, no past study has investigated the relation between weekend catch-up sleep and hyperuricemia in postmenopausal women. Hence, the aim of this research was to estimate the relation between weekend catch-up sleep and hyperuricemia with insufficient sleep in postmenopausal women during weekday or workday. METHODS: This study included 1,877 participants extracted from the Korea National Health and Nutrition Examination Survey VII. The study population was divided into weekend catch-up sleep and non-weekend catch-up sleep groups. Odds ratios with 95% confidence intervals were derived using multiple logistic regression analysis. RESULTS: Weekend catch-up sleep had a significantly lower prevalence of hyperuricemia after adjusting for confounders (odds ratio, 0.758 [95% confidence interval, 0.576-0.997]). In a subgroup analysis, weekend catch-up sleep of 1 to 2 hours was significantly correlated with a lower prevalence of hyperuricemia after adjusting for confounders (odds ratio: 0.522 [95% confidence interval, 0.323-0.845]). CONCLUSIONS: Weekend catch-up sleep had a decreased prevalence of hyperuricemia in postmenopausal women with sleep deprivation.


Asunto(s)
Hiperuricemia , Privación de Sueño , Humanos , Femenino , Estudios Transversales , Encuestas Nutricionales , Hiperuricemia/epidemiología , Posmenopausia , Sueño , República de Corea/epidemiología
20.
J Hosp Palliat Care ; 26(2): 60-68, 2023 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-37753508

RESUMEN

Purpose: For the dignity of patients nearing the end of their lives, it is essential to provide end-of-life (EoL) care in a separate, dedicated space. This study investigated the utilization of specialized rooms for dying patients within a hospice unit. Methods: This retrospective study examined patients who died in a single hospice unit between January 1, 2017, and December 31, 2021. Utilizing medical records, we analyzed the circumstances surrounding death, the employment of specialized rooms for terminally ill patients, and the characteristics of those who received EoL care in a shared room. Results: During the 1,825-day survey period, deaths occurred on 632 days, and 799 patients died. Of these patients, 496 (62.1%) received EoL care in a dedicated room. The average duration of using this dedicated space was 1.08 days. Meanwhile, 188 patients (23.5%) died in a shared room. Logistic regression analysis revealed that a longer stay in the hospice unit was associated with a lower risk of receiving EoL care in a shared room (odds ratio [OR]=0.98, 95% confidence interval [CI] 0.97~0.99; P=0.002). Furthermore, a higher number of deaths on the day a patient died was associated with a greater risk of receiving EoL care in a shared room (OR=1.66, 95% CI 1.33~2.08; P<0.001). Conclusion: To ensure that more patients receive EoL care for an adequate duration in a private setting, additional research is necessary to increase the number of dedicated rooms and incorporate them into the hospice unit at an early stage.

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