Publications by authors named "Wen-Sen Lee"

Myocardial ischemia-reperfusion (I/R) injury triggers several cell death types, including apoptosis, autophagy, and ferroptosis. Licochalcone A (LCA), a natural flavonoid compound isolated from the root of Glycyrrhiza glabra, has been demonstrated to exert potential pharmacological benefits, such as antioxidant, antitumor, and anti-inflammatory activities. The present study aimed to investigate the involvement of ferroptosis in the pathogenesis of I/R and determine whether LCA can inhibit ferroptosis to prevent the myocardial I/R injury in rats.

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The impact of vaccinating the older population against vaccine-preventable diseases in terms of health, social and economic benefits has been increasingly recognised. However, there is a gap in the utilisation of vaccines worldwide. The population is ageing at an unprecedented pace in the Asia-Pacific (APAC) region, with the number of persons older than 65 years set to double by 2050 to around 1.

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Background: This study aimed to assess the safety and immunogenicity of MVC-COV1901, a recombinant COVID-19 protein vaccine, containing S-2P protein adjuvanted with CpG 1018 and aluminum hydroxide, for people living with HIV (PWH).

Methods: A total of 57 PWH of ≥20 years of age who are on stable antiretroviral therapy were compared with 882 HIV-negative participants. Participants received two doses of MVC-COV1901 28 days apart.

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Article Synopsis
  • * The study treated neonatal rat cardiomyocytes with varying PAME concentrations to assess its effects on calcium levels and cardiomyocyte size, observing that PAME increases both cytosolic and mitochondrial calcium and opens the mitochondrial permeability transition pore (MPTP).
  • * Findings indicate that PAME disrupts mitochondrial function, reduces ATP production, increases reactive oxygen species (ROS), and triggers hypertrophy in cardiomyocytes, effects that were lessened by inhibiting the GPR40 receptor.
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Background: Ischemia/reperfusion (I/R) is associated with severe cellular damage and death. Ferroptosis, a new form of regulated cell death caused by the accumulation of iron-mediated lipid peroxidation, has been found in several diseases including I/R injury, which was reported to be suppressed by flavonoids. Baicalein (BAI) and luteolin (Lut) are flavonoids and were shown to reduce the myocardial I/R injury.

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We previously demonstrated that activation of progesterone receptor (PR) is essential for folic acid (FA)-inhibited proliferation in colorectal cancer cell lines. In the present study, we further investigated whether the requirement of PR activation for the FA-regulated cell proliferation and migration is a general phenomenon for all cancer cell lines or specific for colorectal cancer cell lines only. Initially, we examined the expression of PR in various cancer cell lines using Western blot analyses and RT-PCR technique, and then investigated the effects of FA on these cancer cell lines.

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Ferroptosis is an iron-dependent form of cell death caused by the inactivation of glutathione peroxidase 4 (GPX4) and accumulation of lipid peroxides. Ferroptosis has been found to participate in the ischemia-reperfusion (I/R) injury, leading to heart dysfunction and myocardial cell death. Xanthohumol (XN), a prenylated flavonoid isolated from , has multiple pharmacological activities, such as anti-inflammatory and antioxidant.

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Fungal or bacterial co-infections in patients with H1N1 influenza have already been reported in many studies. However, information on the risk factors, complications, and prognosis of mortality cases with coronavirus disease 2019 (COVID-19) are limited. We aimed to assess 36 mortality cases of 178 hospitalized patients among 339 patients confirmed to have had SARS-CoV-2 infections in a medical center in the Wenshan District of Taipei, Taiwan, between January 2020 and September 2021.

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Article Synopsis
  • The study aimed to evaluate the effectiveness of new and existing antibiotics against Gram-negative bacteria in Taiwan.
  • Researchers collected samples from various sources and measured the minimum inhibitory concentrations (MICs) of the antibiotics using specific testing methods, while also identifying resistance genes in non-susceptible isolates.
  • Results indicated that the cefepime-enmetazobactam combination was highly effective against certain drug-resistant bacteria, highlighting the importance of ongoing monitoring of novel antibiotics in clinical settings.
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To identify the core structure of 2-aminoethoxydiphenyl borate (2-APB) responsible for the anti-oxidative and protective effect on the ischemia/reperfusion (I/R)-induced heart injury, various 2-APB analogues were analyzed, and several antioxidant assays were performed. Cell viability was determined using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Myocardial infarct size was quantified using triphenyl tetrazolium chloride (TTC) staining.

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Cytomegalovirus (CMV) infection is associated with significant morbidity and mortality in both immunocompetent and immunocompromised patients. CMV is a ubiquitous Herpesviridae virus with a wide spectrum of pathologies in humans. Immunocompetent patients generally develop a benign, self-limited mononucleosis-like syndrome, whereas gastrointestinal tissue-invasive disease is more frequently seen in immunocompromised.

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Catecholaminergic polymorphic ventricular tachycardia (CPVT), a rare autosomal dominant or recessive disease, usually results in syncope or sudden cardiac death. Most CPVT patients do not show abnormal cardiac structure and electrocardiogram features and symptoms, usually onset during adrenergically mediated physiological conditions. CPVT tends to occur at a younger age and is not easy to be diagnosed and managed.

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Background: MVC-COV1901, a recombinant protein vaccine containing pre-fusion-stabilised spike protein S-2P adjuvanted with CpG 1018 and aluminium hydroxide, has been shown to be well tolerated with a good safety profile in healthy adults aged 20-49 years in a phase 1 trial, and provided a good cellular and humoral immune responses. We present the interim safety, tolerability, and immunogenicity results of a phase 2 clinical trial of the MVC-COV1901 vaccine in Taiwan.

Methods: This is a large-scale, double-blind, randomised, placebo-controlled phase 2 trial done at ten medical centres and one regional hospital in Taiwan.

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Adipogenic differentiation from stem cells has become a research target due to the increasing interest in obesity. It has been indicated that adipocytes can secrete palmitic acid methyl ester (PAME), which is able to regulate stem cell proliferation. However, the effects of PAME on adipogenic differentiation in stem cell remain unclear.

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Article Synopsis
  • This study examined how effective various antibiotics, including cefiderocol and new combinations of β-lactamase inhibitors (BLIs), are against resistant strains of Pseudomonas aeruginosa and Acinetobacter baumannii.
  • Researchers tested a total of 405 isolates from patients in Taiwan and found that cefiderocol showed strong effectiveness, inhibiting 100% of Pseudomonas and 94.9% of Acinetobacter at low concentrations.
  • The study highlights the urgent need for on-site tests for these antibiotics, as antibiotic resistance is a significant threat to global health, with resistance developing quickly even before new treatments are widely available.
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Objectives: The aim of this study was to investigate the trends in serotypes and in vitro antimicrobial susceptibility of Streptococcus pneumoniae causing adult invasive pneumococcal disease (IPD) to dalbavancin, telavancin, tedizolid, eravacycline, omadacycline and other comparator antibiotics from 2017-2020 following implementation of the 13-valent pneumococcal conjugate vaccine (PCV-13) and during the COVID-19 (coronavirus disease 2019) pandemic.

Methods: During the study period, 237 S. pneumoniae isolates were collected from non-duplicate patients, covering 15.

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Background/purpose: Streptococcus pneumoniae causes pneumonia and other invasive diseases, and is a leading cause of mortality in the elderly population. The present study aimed to provide current antimicrobial resistance and epidemiological profiles of S. pneumoniae infections in Taiwan.

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Article Synopsis
  • The study focused on the effectiveness of different antibiotics against carbapenem-nonsusceptible Enterobacterales (CNSE) derived from 16 hospitals in Taiwan, analyzing 201 non-duplicate isolates, mainly E. coli and K. pneumoniae.
  • Results showed cefiderocol was the most effective, with only a small percentage of isolates being resistant, while ceftazidime/avibactam and cefepime/zidebactam also showed high susceptibility rates.
  • Carbapenemase genes were present in a notable portion of K. pneumoniae isolates, indicating significant resistance, but the study highlights the potential of specific antibiotics as treatment options for these resistant strains.
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