Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 145
Filter
1.
BMJ Paediatr Open ; 8(1)2024 May 31.
Article in English | MEDLINE | ID: mdl-38823798

ABSTRACT

OBJECTIVE: To compare the neurodevelopmental outcomes of preterm infants before and during the COVID-19 pandemic. DESIGN: Premature infants born in 2018 were assigned to the pre-pandemic group, while those born in 2019 were assigned to the during-pandemic group. SETTING: Nationwide cohort study. PATIENTS: Very low birthweight premature infants registered in the Taiwan Premature Infant Follow-up Network database. INTERVENTIONS: Anti-epidemic measures, including quarantine and isolation protocols, social distancing, the closure of public spaces and restrictions on travel and gatherings during COVID-19 pandemic. MAIN OUTCOME MEASURES: Outcomes were measured by Bayley Scales of Infant and Toddler Development Third Edition at corrected ages of 6, 12 and 24 months old. Generalised estimating equation (GEE) was applied to incorporate all measurements into a single model. RESULTS: Among the 1939 premature infants who were enrolled, 985 developed before the pandemic, while 954 developed during the pandemic. Premature infants whose development occurred during the pandemic exhibited better cognitive composite at the corrected age of 6 months (beta=2.358; 95% CI, 1.07 to 3.65; p<0.001), and motor composite at corrected ages of 12 months (beta=1.680; 95% CI, 0.34 to 3.02; p=0.014). GEE analysis showed that infants who had grown during the pandemic achieved higher scores in cognitive composite (beta=1.416; 95% CI, 0.36 to 2.48; p=0.009). CONCLUSION: Premature infants in Taiwan who developed during the pandemic showed better neurodevelopment compared with those born before the pandemic.


Subject(s)
COVID-19 , Infant, Premature , Humans , COVID-19/epidemiology , COVID-19/prevention & control , Taiwan/epidemiology , Infant, Premature/growth & development , Male , Female , Infant, Newborn , Infant , Retrospective Studies , Child Development/physiology , SARS-CoV-2 , Neurodevelopmental Disorders/epidemiology , Infant, Very Low Birth Weight/growth & development , Pandemics , Cohort Studies
2.
Endocr Connect ; 2024 May 01.
Article in English | MEDLINE | ID: mdl-38819306

ABSTRACT

OBJECTIVE: Previous studies have suggested that body mass index (BMI) should be considered when assessing the relationship between fatty liver (FL) and osteoporosis. The aim of this study was to investigate future fracture events in people with FL, focusing on the effect of BMI in both sexes. METHODS: This retrospective cohort study from 2011 to 2019 enrolled 941 people, including 441 women and 500 men, aged 50 years or older who underwent liver imaging (ultrasound, computed tomography, or magnetic resonance image) and dual-energy X-ray absorptiometry (DXA, for bone mineral density measurements). The study examined predictors of osteoporosis in both sexes, and the effect of different ranges of BMI (18.5-24, 24-27, and ≥27 kg/m2 in women; 18.5-24, 24-27, 27-30 and ≥30 kg/m2 in men) on the risk of future fractures in FL patients. RESULTS: The average follow-up period was 5.3 years for women and 4.2 years for men. Multivariate analysis identified age and BMI as independent risk factors for osteoporosis in both sexes. Each unit increase in BMI decreased the risk of osteoporosis by ≥10%. In both women and men with FL, a BMI of 24-27 kg/m2 offered protection against future fractures, compared to those without FL and with a BMI of 18.5-24 kg/m2. CONCLUSION: The protective effect of a higher BMI against future fractures in middle-aged and elderly women and men with FL is not uniform and decreases beyond certain BMI ranges.

3.
Int J Mol Sci ; 25(10)2024 May 20.
Article in English | MEDLINE | ID: mdl-38791597

ABSTRACT

Bladder cancer (BC) is a malignant tumor of the urinary system with high mortality and recurrence rates. Proteasome subunit type 4 (PSMB4) is highly expressed and has been identified as having oncogenic properties in a variety of cancer types. This study aimed to explore the effect of PSMB4 knockdown on the survival, migration, and angiogenesis of human bladder cancer cells with different degrees of malignancy. We analyzed the effects of PSMB4 knockdown in bladder cancer cells and endothelial cells in the tumor microenvironment. PSMB4 was highly expressed in patients with low- and high-grade urothelial carcinoma. Inhibition of PSMB4 reduced protein expression of focal adhesion kinase (FAK) and myosin light chain (MLC), leading to reduced migration. Furthermore, the suppression of PSMB4 decreased the levels of vascular endothelial factor B (VEGF-B), resulting in lower angiogenic abilities in human bladder cancer cells. PSMB4 inhibition affected the migratory ability of HUVECs and reduced VEGFR2 expression, consequently downregulating angiogenesis. In the metastatic animal model, PSMB4 knockdown reduced the relative volumes of lung tumors. Our findings suggest the role of PSMB4 as a potential target for therapeutic strategies against human bladder cancer.


Subject(s)
Cell Movement , Neovascularization, Pathologic , Proteasome Endopeptidase Complex , Urinary Bladder Neoplasms , Humans , Urinary Bladder Neoplasms/genetics , Urinary Bladder Neoplasms/pathology , Urinary Bladder Neoplasms/metabolism , Cell Movement/genetics , Neovascularization, Pathologic/genetics , Neovascularization, Pathologic/metabolism , Proteasome Endopeptidase Complex/metabolism , Proteasome Endopeptidase Complex/genetics , Cell Line, Tumor , Animals , Mice , Human Umbilical Vein Endothelial Cells/metabolism , Endothelial Cells/metabolism , Endothelial Cells/pathology , Gene Knockdown Techniques , Gene Expression Regulation, Neoplastic , Tumor Microenvironment/genetics , Male , Vascular Endothelial Growth Factor Receptor-2/metabolism , Vascular Endothelial Growth Factor Receptor-2/genetics , Female , Angiogenesis , Cysteine Endopeptidases
4.
Biomedicines ; 12(3)2024 Feb 28.
Article in English | MEDLINE | ID: mdl-38540152

ABSTRACT

This study compared gut (fecal) microbiota profiles between pre-term and full-term infants, assuming that pre-term infants without feeding intolerance would have gut microbiota similar to those of full-term infants. A total of 13 pre-term infants (gestational age < 37 weeks, birthweight ≤ 2500 g) and 10 full-term infants were included. The pre-term infants were assigned to the feeding tolerance (FT) group (n = 7) if their daily intake exceeded 100 mL/kg/day at two weeks after birth, or the feeding intolerance (FI) group (n = 6). Microbial DNA from weekly fecal samples was analyzed. The microbiota profiles of the pre-term infants and full-term infants were significantly different (p = 0.0001), as well as the FT and FI groups (p = 0.0009). The full-term group had more diversity, with higher concentrations of facultative anaerobes such as Bifidobacteriaceae and Lactobacteriaceae. The FT group's gut microbiota matured over four weeks, with higher levels of digestion-related bacteria, while the FI group had more pathogens. In the FI group, a significant difference was observed between the first and second weeks, with no significant differences noted between the first week and the third or fourth weeks. The delay in the development of the pre-term infants' gut microbiota may be associated with the FI.

5.
J Neurosci ; 44(17)2024 Apr 24.
Article in English | MEDLINE | ID: mdl-38453467

ABSTRACT

Pain perception arises from the integration of prior expectations with sensory information. Although recent work has demonstrated that treatment expectancy effects (e.g., placebo hypoalgesia) can be explained by a Bayesian integration framework incorporating the precision level of expectations and sensory inputs, the key factor modulating this integration in stimulus expectancy-induced pain modulation remains unclear. In a stimulus expectancy paradigm combining emotion regulation in healthy male and female adults, we found that participants' voluntary reduction in anticipatory anxiety and pleasantness monotonically reduced the magnitude of pain modulation by negative and positive expectations, respectively, indicating a role of emotion. For both types of expectations, Bayesian model comparisons confirmed that an integration model using the respective emotion of expectations and sensory inputs explained stimulus expectancy effects on pain better than using their respective precision. For negative expectations, the role of anxiety is further supported by our fMRI findings that (1) functional coupling within anxiety-processing brain regions (amygdala and anterior cingulate) reflected the integration of expectations with sensory inputs and (2) anxiety appeared to impair the updating of expectations via suppressed prediction error signals in the anterior cingulate, thus perpetuating negative expectancy effects. Regarding positive expectations, their integration with sensory inputs relied on the functional coupling within brain structures processing positive emotion and inhibiting threat responding (medial orbitofrontal cortex and hippocampus). In summary, different from treatment expectancy, pain modulation by stimulus expectancy emanates from emotion-modulated integration of beliefs with sensory evidence and inadequate belief updating.


Subject(s)
Anticipation, Psychological , Anxiety , Magnetic Resonance Imaging , Humans , Male , Female , Anxiety/psychology , Anxiety/physiopathology , Adult , Anticipation, Psychological/physiology , Young Adult , Pain Perception/physiology , Pain/psychology , Pain/physiopathology , Bayes Theorem , Emotions/physiology , Brain/diagnostic imaging , Brain/physiopathology , Brain/physiology , Pleasure/physiology , Brain Mapping
6.
Eur J Med Res ; 29(1): 189, 2024 Mar 20.
Article in English | MEDLINE | ID: mdl-38504329

ABSTRACT

PURPOSE: The prevalence of atopic diseases has increased in recent decades. A possible link between antibiotic use during pregnancy and childhood atopic disease has been proposed. The aim of this study is to explore the association of antibiotic exposure during pregnancy with childhood atopic diseases from a nationwide, population-based perspective. METHODS: This was a nationwide population-based cohort study. Taiwan's National Health Insurance Research Database was the main source of data. The pairing of mothers and children was achieved by linking the NHIRD with the Taiwan Maternal and Child Health Database. This study enrolled the first-time pregnancies from 2004 to 2010. Infants of multiple delivery, preterm delivery, and death before 5 years old were excluded. All participants were followed up at least for 5 years. Antenatal antibiotics prescribed to mothers during the pregnancy period were reviewed. Children with more than two outpatient visits, or one admission, with a main diagnosis of asthma, allergic rhinitis, or atopic dermatitis were regarded as having an atopic disease. RESULTS: A total of 900,584 children were enrolled in this study. The adjusted hazard ratios of antibiotic exposure during pregnancy to childhood atopic diseases were 1.12 for atopic dermatitis, 1.06 for asthma, and 1.08 for allergic rhinitis, all of which reached statistical significance. The trimester effect was not significant. There was a trend showing the higher the number of times a child was prenatally exposed to antibiotics, the higher the hazard ratio was for childhood atopic diseases. CONCLUSIONS: Prenatal antibiotic exposure might increase the risk of childhood atopic diseases in a dose-dependent manner.


Subject(s)
Asthma , Dermatitis, Atopic , Rhinitis, Allergic , Child , Infant , Infant, Newborn , Humans , Female , Pregnancy , Child, Preschool , Dermatitis, Atopic/chemically induced , Dermatitis, Atopic/epidemiology , Cohort Studies , Anti-Bacterial Agents/adverse effects , Asthma/chemically induced , Asthma/epidemiology , Mothers
7.
J Exerc Sci Fit ; 22(2): 168-177, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38464601

ABSTRACT

Background: Resistance training (RT) and protein supplementation have beneficial effects on the human body. However, it is unknown if RT's health-promoting benefits are enhanced by food-borne protein, such as cheese supplements. This study investigated at how the body composition, lipid profile, muscle strength and intestinal microbiota changed following four weeks of RT combined with cheese supplementation. Methods: Thirty-five male and untrained adults were divided into 4 groups [control group (CON), low-dose group (LG), medium-dose group (MG), and high-dose group (HG)] and underwent a 4-week RT (3 times/week) in combination with cheese supplementation. Participants received 108 g (LG), 216 g (MG), or 324 g (HG) of cheese on the day of RT, and each serving (108 g) of cheese contained 6.7 g of food-borne protein. The RT program was a whole-body program with movements such as chest presses, leg presses, seated rowing, knee extensions and triceps pushdown. The exercise consisted of 3 sets of 8-12 repetitions at 70%RM, with a 120-s break in between. Body parameters (body composition, lipid profile and muscle strength) were assessed at baseline and after the 4 weeks of the intervention. The feces sample was taken every weekend. A two-way (group × time) mixed-design ANOVA was used to examine the body parameters. Independent one-way ANOVA was used to analyze the differences between groups in baseline characteristics and different values of each parameter. Results: HDL-C level was higher in MG than in LG. In comparison to LG, MG had lower levels of total cholesterol, low-density lipoprotein cholesterol, body weight, body mass index, body fat mass and body fat percentage. However, there was no difference in muscle strength between in the four groups. The abundance of Actinobacteria was higher in LG and Erysipelotrichaceae was lower in MG and HG. Conclusion: The findings suggest that cheese could be a readily available food-borne protein supplement to enhance the beneficial effects of RT on health. It may improve body composition and lipid profile by altering the proportion of intestinal microbiota. During the 4-week RT intervention, 13.4 g of foodborne protein in the form of cheese 3 times per week was the ideal dosage.

8.
Intensive Crit Care Nurs ; 83: 103652, 2024 Feb 24.
Article in English | MEDLINE | ID: mdl-38402650

ABSTRACT

OBJECTIVE: To investigate the correlation between body temperature and skin surface temperature in intensive care unit patients and to identify specific indicators of skin surface temperature for early fever detection. RESEARCH METHODOLOGY/DESIGN: This pilot study was a prospective, observational investigation conducted at National Cheng Kung University Hospital in Tainan, Taiwan. A total of 54 patients admitted to the Surgical Intensive Care Unit of a tertiary hospital between April and August 2020 were included. Patients utilized the wearable device HEARThremoTM to continuously monitor skin surface temperature and heart rate. Analysis of Variance was applied to identify the association of skin surface temperature with different body temperature groups. The comparison between skin surface temperature and fever over eight time intervals was studied using a generalized estimating equation. RESULTS: In 34 patients (63 %) with a fever (≥38 °C), skin surface temperature increased (P < 0.001) when body temperature increased. The maximum skin surface temperature was significantly associated with fever 180-210 min before the fever events occurred (OR: 2.22, 95 % CI: 1.30-3.80). The mean skin surface temperature was associated with fever 120-150 min before the fever events (OR: 8.70, 95 % CI: 2.08-36.36). CONCLUSIONS: Skin surface temperature can be an important early predictive sign before the onset of fever. Continuous temperature monitoring can detect fever early and initiate treatment in advance. This study serves as a preliminary exploration in this area, laying the groundwork for future comprehensive research. IMPLICATIONS FOR CLINICAL PRACTICE: Continuous monitoring of skin surface temperature empowers nurses to swiftly detect fever, transcending conventional methods. This proactive approach allows for the early identification of physiological abnormalities, facilitating the prompt initiation of further physical assessments and relevant examinations for early treatment commencement.

9.
Endocr Pract ; 30(5): 424-430, 2024 May.
Article in English | MEDLINE | ID: mdl-38325629

ABSTRACT

OBJECTIVE: Major adverse cardiovascular event (MACE) outcomes associated with sodium-glucose cotransporter 2 inhibitor (SGLT2i) and glucagon-like peptide-1 receptor agonist (GLP-1 RA) therapies remain unclear in patients with type 2 diabetes and newly diagnosed diabetic foot complications (DFCs). This study examined the impact of SGLT2i and GLP-1 RA use on the rates of MACEs and amputations in patients with type 2 diabetes and without cardiovascular disease. METHODS: Data from the Taiwan National Health Insurance Research Database (2004-2017) were analyzed, focusing on patients with type 2 diabetes without previous MACE and newly diagnosed DFCs. The primary outcome was the first MACE occurrence, and the secondary outcomes included MACE components, all-cause mortality, and lower extremity amputation (LEA) rates. RESULTS: SGLT2i users showed a significant decrease in the MACE (hazard ratio [HR], 0.64; 95% confidence interval [CI], 0.46-0.88) and hospitalization for heart failure (HR, 0.54; 95% CI, 0.35-0.83) rates compared with dipeptidyl peptidase-4 inhibitor users. The amputation rates were also lower in SGLT2i users without LEA at the first DFC diagnosis (HR, 0.28; 95% CI, 0.10-0.75) and did not increase in those with a history of peripheral artery disease or LEA. No significant differences were observed between dipeptidyl peptidase-4 inhibitor and GLP-1 RA users in terms of the primary or secondary outcomes. CONCLUSION: In patients with type 2 diabetes initially diagnosed with DFC, SGLT2i are effective in significantly reducing the hospitalization for heart failure and MACE rates. SGLT2i lower the amputation rates, especially in patients who have not previously had a LEA, than the dipeptidyl peptidase-4 inhibitor therapy.


Subject(s)
Amputation, Surgical , Diabetes Mellitus, Type 2 , Diabetic Foot , Heart Failure , Hospitalization , Incretins , Sodium-Glucose Transporter 2 Inhibitors , Humans , Sodium-Glucose Transporter 2 Inhibitors/therapeutic use , Amputation, Surgical/statistics & numerical data , Male , Female , Middle Aged , Aged , Incretins/therapeutic use , Diabetes Mellitus, Type 2/drug therapy , Diabetes Mellitus, Type 2/complications , Diabetic Foot/epidemiology , Diabetic Foot/surgery , Heart Failure/epidemiology , Hospitalization/statistics & numerical data , Taiwan/epidemiology , Dipeptidyl-Peptidase IV Inhibitors/therapeutic use , Glucagon-Like Peptide-1 Receptor/agonists , Hypoglycemic Agents/therapeutic use , Adult
10.
Clin Oral Investig ; 28(2): 141, 2024 Feb 10.
Article in English | MEDLINE | ID: mdl-38340152

ABSTRACT

OBJECTIVES: Successful orthognathic surgery requires accurate transfer of the intraoperative surgical plan. This study aimed to (1) evaluate the surgical error of a novel intermediate splint in positioning the maxilla during maxilla-first orthognathic surgery and (2) determine factors influencing surgical error. MATERIALS AND METHODS: This prospective study examined 83 patients who consecutively underwent Le Fort I osteotomy for correction of skeletal class III deformity using a novel intermediate splint and a bilateral sagittal split osteotomy. Surgical error was the outcome variable, measured as the difference in postoperative translational and rotational maxillary position from the virtual plan. Measures included asymmetry, need and amount for mandibular opening during fabrication of intermediate splints, and planned and achieved skeletal movement. RESULTS: Mean errors in translation for vertical, sagittal, and transversal dimensions were 1.0 ± 0.7 mm, 1.0 ± 0.6 mm, and 0.7 ± 0.6 mm, respectively; degrees in rotation for yaw, roll, and pitch were 0.8 ± 0.6, 0.6 ± 0.4, and 1.6 ± 1.1, respectively. The transverse error was smaller than sagittal and vertical errors; error for pitch was larger than roll and yaw (both p < 0.001). Error for sagittal, transverse, and roll positioning was affected by the achieved skeletal movement (roll, p < 0.05; pitch and yaw, p < 0.001). Surgical error of pitch positioning was affected by planned and achieved skeletal movement (both p < 0.001). CONCLUSIONS: Using the novel intermediate splint when performing Le Fort I osteotomy allowed for accurate positioning of the maxilla. CLINICAL RELEVANCE: The novel intermediate splint for maxillary positioning can be reliably used in clinical routines.


Subject(s)
Orthognathic Surgery , Orthognathic Surgical Procedures , Humans , Maxilla/surgery , Splints , Prospective Studies , Osteotomy, Le Fort/methods , Orthognathic Surgical Procedures/methods , Imaging, Three-Dimensional/methods , Cephalometry
11.
Chem Biol Interact ; 389: 110869, 2024 Feb 01.
Article in English | MEDLINE | ID: mdl-38216027

ABSTRACT

The ability of bladder cancer to invade and metastasize often leads to poor prognosis in bladder cancer patients. The aim of this study was to evaluate the effect of the farnesoid X receptor (FXR) agonist GW4064 on the migration and invasion of human bladder cancer cells. Long-term exposure to GW4064 decreased the colony formation of RT4 and T24 cells. The wound healing migration assay revealed an inhibitory effect of GW4064 on both of these bladder cancer cell lines. In addition, integrin ß3 expression and myosin light chain phosphorylation were decreased after GW4064 treatment. Immunocytochemistry showed an increase in E-cadherin and a decrease in ß-catenin in the cell membrane of bladder cancer cells. Total protein expression and membrane fractionation assays also indicated upregulation of E-cadherin and downregulation of ß-catenin. Moreover, GW4064 reduced the invasion of muscle-invasive T24 cells. The GW4064-decreased migration and invasion were reversed by the proteasome inhibitor MG132 and the lysosome inhibitor NH4Cl. Furthermore, the GW4064-induced inhibition of matrix metalloproteinase-2 (MMP2) and cathepsin B expression was reversed by NH4Cl. Xenograft animal studies revealed that GW4064 declined MMP2, cathepsin B and lung metastasis of bladder cancer. In conclusion, GW4064 decreases the migration and invasion of human bladder cancer cells, which may provide a new therapeutic strategy for the treatment of human bladder cancer.


Subject(s)
Isoxazoles , Urinary Bladder Neoplasms , beta Catenin , Animals , Humans , beta Catenin/metabolism , Matrix Metalloproteinase 2/metabolism , Down-Regulation , Cathepsin B , Cell Line, Tumor , Urinary Bladder Neoplasms/metabolism , Cadherins/metabolism , Cell Movement , Neoplasm Invasiveness
12.
Pediatr Neonatol ; 65(1): 38-47, 2024 Jan.
Article in English | MEDLINE | ID: mdl-37517971

ABSTRACT

BACKGROUND: The rate of preterm birth is increasing globally. It causes significant short-term and long-term health care burdens. A comprehensive recognition of the risk factors related to preterm births is important in the prevention of preterm birth. Our study is to investigate the incidence and maternal risk factors of preterm birth from a nationwide population-based perspective. METHODS: This is a retrospective cohort study. All live births from 2004 to 2014 in Taiwan enrolled. The main data source was Taiwan's Birth Certificate Application (BCA) database. The BCA database was linked with the National Health Insurance Research Database (NHIRD) to establish any links between information on newborns and maternal underlying disease. RESULTS: A total of 1,385,979 births were included in the analysis. The incidence of preterm birth increased gradually in Taiwan from 8.85% in 2004 to 10.73% in 2014. Maternal age, socioeconomic status, maternal allergy and autoimmune diseases, gynecological diseases, and pregnancy-related complications were significant risk factors for preterm birth. CONCLUSION: The overall incidence of preterm births has gradually increased in Taiwan. Maternal age, socioeconomic status, certain underlying diseases, and pregnancy-related complications were risk factors for preterm birth.


Subject(s)
Pregnancy Complications , Premature Birth , Pregnancy , Female , Infant, Newborn , Humans , Premature Birth/epidemiology , Premature Birth/etiology , Retrospective Studies , Cohort Studies , Taiwan/epidemiology , Risk Factors , Pregnancy Complications/epidemiology
13.
J Exp Bot ; 75(7): 1982-1996, 2024 Mar 27.
Article in English | MEDLINE | ID: mdl-38124377

ABSTRACT

Drought-induced leaf senescence is associated with high sugar levels, which bears some resemblance to the syndrome of diabetes in humans; however, the underlying mechanisms of such 'plant diabetes' on carbon imbalance and the corresponding detoxification strategy are not well understood. Here, we investigated the regulatory mechanism of exogenous methylglyoxal (MG) on 'plant diabetes' in maize plants under drought stress applied via foliar spraying during the grain-filling stage. Exogenous MG delayed leaf senescence and promoted photoassimilation, thereby reducing the yield loss induced by drought by 14%. Transcriptome and metabolite analyses revealed that drought increased sugar accumulation in leaves through inhibition of sugar transporters that facilitate phloem loading. This led to disequilibrium of glycolysis and overaccumulation of endogenous MG. Application of exogenous MG up-regulated glycolytic flux and the glyoxalase system that catabolyses endogenous MG and glycation end-products, ultimately alleviating 'plant diabetes'. In addition, the expression of genes facilitating anabolism and catabolism of trehalose-6-phosphate was promoted and suppressed by drought, respectively, and exogenous MG reversed this effect, implying that trehalose-6-phosphate signaling in the mediation of 'plant diabetes'. Furthermore, exogenous MG activated the phenylpropanoid biosynthetic pathway, promoting the production of lignin and phenolic compounds, which are associated with drought tolerance. Overall, our findings indicate that exogenous MG activates defense-related pathways to alleviate the toxicity derived from 'plant diabetes', thereby helping to maintain leaf function and yield production under drought.


Subject(s)
Diabetes Mellitus , Zea mays , Humans , Zea mays/genetics , Plant Senescence , Pyruvaldehyde/metabolism , Pyruvaldehyde/pharmacology , Droughts , Diabetes Mellitus/metabolism , Sugars/metabolism , Plant Leaves/metabolism , Stress, Physiological
14.
Commun Biol ; 6(1): 911, 2023 09 05.
Article in English | MEDLINE | ID: mdl-37670137

ABSTRACT

The immune synapse, a highly organized structure formed at the interface between T lymphocytes and antigen-presenting cells (APCs), is essential for T cell activation and the adaptive immune response. It has been shown that this interface shares similarities with the primary cilium, a sensory organelle in eukaryotic cells, although the roles of ciliary proteins on the immune synapse remain elusive. Here, we find that inositol polyphosphate-5-phosphatase E (INPP5E), a cilium-enriched protein responsible for regulating phosphoinositide localization, is enriched at the immune synapse in Jurkat T-cells during superantigen-mediated conjugation or antibody-mediated crosslinking of TCR complexes, and forms a complex with CD3ζ, ZAP-70, and Lck. Silencing INPP5E in Jurkat T-cells impairs the polarized distribution of CD3ζ at the immune synapse and correlates with a failure of PI(4,5)P2 clearance at the center of the synapse. Moreover, INPP5E silencing decreases proximal TCR signaling, including phosphorylation of CD3ζ and ZAP-70, and ultimately attenuates IL-2 secretion. Our results suggest that INPP5E is a new player in phosphoinositide manipulation at the synapse, controlling the TCR signaling cascade.


Subject(s)
Antibodies , Phosphoric Monoester Hydrolases , Phosphatidylinositols , Receptors, Antigen, T-Cell
15.
Cardiorenal Med ; 13(1): 310-323, 2023.
Article in English | MEDLINE | ID: mdl-37708880

ABSTRACT

INTRODUCTION: Sacubitril/valsartan (S/V) reduces all-cause mortality in patients with heart failure with reduced ejection fraction (HFrEF), but it may decline their estimated glomerular filtration rates (eGFR). In addition to eGFR, this clinical study aimed to develop a blood urea nitrogen (BUN)-based index to evaluate the status of renal perfusion and then identify predictors of all-cause death or heart transplant in patients with HFrEF receiving S/V. METHODS: From the recruited 291 patients with HFrEF who were prescribed S/V from March 2017 to March 2019, we collected demographic, drug history, laboratory, echocardiographic, and clinical data from 1 year before S/V initiation until December 2020. Regression analysis was conducted by fitting Cox's models with time-dependent covariates for the survival time and applying the modern stepwise variable selection procedure. The smoothing spline method was used to detect nonlinearity in effect and yield optimal cut-off values for continuous covariates. RESULTS: In the Cox's model, decreased hemoglobin level, decreased mean left ventricular ejection fraction, declined daily dose of S/V, decreased eGFR within 3 months, and increased BUN levels within 1 month and 9 months over time were significantly associated with an increased risk of all-cause death or heart transplant in patients with HFrEF. CONCLUSIONS: Adequate maintenance of renal perfusion is crucial for the continuous use of S/V and to avoid worsening renal function in patients with HFrEF. We defined the maximum increase in BUN levels within a specified period as the Worsening Renal Perfusion Index (WRPSV Index) to capture the prognostic effect of renal hypoperfusion in patients with HFrEF.


Subject(s)
Heart Failure , Ventricular Dysfunction, Left , Humans , Stroke Volume , Perfusion Index , Ventricular Function, Left , Tetrazoles/therapeutic use , Tetrazoles/pharmacology , Treatment Outcome , Valsartan/pharmacology , Valsartan/therapeutic use , Kidney , Prognosis , Perfusion
16.
Eur J Immunol ; 53(12): e2350525, 2023 12.
Article in English | MEDLINE | ID: mdl-37713727

ABSTRACT

Repeated annual influenza vaccinations have been associated with reduced vaccine-induced antibody responses. This prospective study aimed to explore the role of vaccine antigen-specific regulatory T (Treg) cells in antibody response to repeated annual influenza vaccination. We analyzed pre- and postvaccination hemagglutination inhibition (HI) titers, seroconversion rates, seroprotection rates, vaccine antigen hemagglutinin (HA)-specific Treg cells, and conventional T (Tconv) cells. We compared these parameters between vaccinees with or without vaccine-induced seroconversion. Our multivariate logistic regression revealed that prior vaccination was significantly associated with a decreased likelihood of achieving seroconversion for both H1N1(adjusted OR, 0.03; 95% CI, 0.01-0.13) and H3N2 (adjusted OR, 0.09; 95% CI, 0.03-0.30). Furthermore, individuals who received repeated vaccinations had significantly higher levels of pre-existing HA-specific Treg cells than those who did not. We also found that vaccine-induced fold-increases in HI titers and seroconversion were negatively correlated with pre-existing HA-specific Treg cells and positively correlated with the ratio of Tconv to Treg cells. Overall, our findings suggest that repeated annual influenza vaccination is associated with a lower vaccine-induced antibody response and a higher frequency of vaccine-specific Treg cells. However, a lower frequency of pre-existing Treg cells correlates with a higher postvaccination antibody response.


Subject(s)
Influenza A Virus, H1N1 Subtype , Influenza Vaccines , Influenza, Human , Humans , Influenza, Human/prevention & control , T-Lymphocytes, Regulatory , Antibody Formation , Influenza A Virus, H3N2 Subtype , Prospective Studies , Antibodies, Viral , Vaccination , Hemagglutination Inhibition Tests
17.
Sci Rep ; 13(1): 13048, 2023 08 11.
Article in English | MEDLINE | ID: mdl-37567912

ABSTRACT

The development of acute kidney injury (AKI) and hepatorenal syndrome-acute kidney injury (HRS-AKI) in cirrhosis has been associated with intestinal barrier dysfunction and gut-kidney crosstalk. We use the related markers such as zonulin, lipopolysaccharides (LPS), and lipopolysaccharide-binding protein (LBP) to predict AKI and HRS-AKI in cirrhotic patients and evaluate their in vitro effects on intestinal (Caco-2) cells and renal tubular (HK-2) cells. From 2013 to 2020, we enrolled 70 cirrhotic patients and developed prediction models for AKI and HRS-AKI over a six-month period. There were 13 (18.6%) and 8 (11.4%) cirrhotic patients developed AKI and HRS-AKI. The prediction models incorporated zonulin, LPS, LBP, C-reactive protein, age, and history of hepatitis B for AKI, and zonulin, LPS, LBP, total bilirubin, and Child-Pugh score for HRS-AKI. The area under curve (AUC) for the prediction of AKI and HRS-AKI was 0.94 and 0.95, respectively. Furthermore, the conditioned medium of LPS+hrLBP pre-treated Caco-2 cells induced apoptosis, necrosis, and zonulin release in HK-2 cells, demonstrating the communication between them. This study found that zonulin, LPS, and LBP are potential practical markers for predicting AKI and HRS-AKI in cirrhotic patients, which may serve as potential targets for renal outcomes in cirrhotic patients.


Subject(s)
Acute Kidney Injury , Hepatorenal Syndrome , Humans , Lipopolysaccharides , Caco-2 Cells , Biomarkers , Acute Kidney Injury/diagnosis , Acute Kidney Injury/etiology , Liver Cirrhosis/complications
18.
SN Comput Sci ; 4(4): 360, 2023.
Article in English | MEDLINE | ID: mdl-37131500

ABSTRACT

Purpose: Due to the outbreak of the COVID-19 pandemic in 2021 in Taiwan, we have adapted the face-to-face Life Design course to a blended learning approach with educational technology to cope with the problem of cross-generational confusion and anxiety towards later life from learners.The objectives of this study are to.evaluate learners' reactions after attending the Life Design course including their level of satisfaction, engagement (Level 1), and the applicability of courses in their life.evaluate their learning outcomes after attending the Life Design course, such as their acquisition of knowledge, skills, attitudes, confidence, commitment (Level 2), and behavioral changes (Level 3).explore the factors that enable and prevent students from transferring their learning in this course to the action taking and making behavioral changes.explore how the application of educational technology can enhance the teaching and learning in the Life Design course. Methods: This study used an action research method to solve two main problems we identified in practice: students' confusion about their future life and the shortcomings of traditional teaching methods, which cannot meet the learning needs of this type of course due to the requirement of intensive personal reflection and self-disclosure. Participants were 36 master's students who completed the Life Design course. Based on this course's design, implementation, and evaluation, we used the new Kirkpatrick Learning Assessment Model (Kirkpatrick J, Kirkpatrick WK. An introduction to the new world Kirkpatrick Model. Kirkpatrick Partners, 2021) to analyze the learning effectiveness on the Reaction, Learning, and Behavioral levels. Results: To facilitate learners to overcome the cross-generational confusion of their life design and solve the shortage of face-to-face teaching methods, we took biographical learning as the core theme for this Life Design course and designed online and offline learning activities. The blended learning approach with educational technology allowed us to go beyond time and location constraints and provide a holistic and inseparable learning experience in both formats. The result of the evaluation shows that students who took the Life Design course were highly satisfied with the overall course design, topics, and the suitability of a blended learning approach, which motivated them to extend their learning outside the classroom and helped them benefit from a more trusted, personal and hybrid interaction with teachers and their peers both online and offline. On the learning level, students not only learned the correct knowledge of age perspectives, changed their views of career and personal development, and acquired skills for life design, but were also confident and committed to applying what they have learned in their future life. After the course, many students applied and integrated the learning into behavioral changes in their life. In terms of the difficulties and hindrances encountered in action taking, many students mentioned the lack of peers' support and constraints from their busy daily life. Many suggested providing extra support after the course with regular impulse, follow-ups, and individual feedback from teachers and peers in an online learning community. This indicates how educational technology can better support these elements in continuous learning and the transfer of learning. Conclusion: Based on these results, we affirm that implementing this Life Design course with a blended learning approach is indeed better than a fully physical course. However, the focus of a blended learning approach should be on learners from a pedagogical perspective rather than technology.

19.
Motor Control ; 27(3): 480-497, 2023 Jul 01.
Article in English | MEDLINE | ID: mdl-36669507

ABSTRACT

This study examined whether table tennis as a method of sensorimotor training improves haptic and motor function and to what extent haptic function gain correlates with changes in motor ability in children with probable developmental coordination disorder (pDCD). Children with pDCD were randomly assigned to the table tennis and nontraining control groups. The children in the table tennis group received 36 sessions of table tennis training, including ball balancing, hitting the ball against the wall, strokes, and serving. Haptic sensitivity, acuity, and motor function domains were measured. The results showed a 41.5% improvement in haptic sensitivity in children exposed to table tennis training compared with 2.8% in those without training. This improved haptic sensitivity significantly correlated with motor function gain, suggesting that somatosensory gains occur simultaneously with changes in motor function in children with pDCD. This novel upper limb motor training approach may be an interesting method of sensorimotor training in neurological rehabilitation in children with pDCD.


Subject(s)
Motor Skills Disorders , Tennis , Humans , Child , Motor Skills , Haptic Technology
20.
Methods Mol Biol ; 2563: 51-94, 2023.
Article in English | MEDLINE | ID: mdl-36227468

ABSTRACT

Biomolecular condensates, physically underpinned to a significant extent by liquid-liquid phase separation (LLPS), are now widely recognized by numerous experimental studies to be of fundamental biological, biomedical, and biophysical importance. In the face of experimental discoveries, analytical formulations emerged as a powerful yet tractable tool in recent theoretical investigations of the role of LLPS in the assembly and dissociation of these condensates. The pertinent LLPS often involves, though not exclusively, intrinsically disordered proteins engaging in multivalent interactions that are governed by their amino acid sequences. For researchers interested in applying these theoretical methods, here we provide a practical guide to a set of computational techniques devised for extracting sequence-dependent LLPS properties from analytical formulations. The numerical procedures covered include those for the determination of spinodal and binodal phase boundaries from a general free energy function with examples based on the random phase approximation in polymer theory, construction of tie lines for multiple-component LLPS, and field-theoretic simulation of multiple-chain heteropolymeric systems using complex Langevin dynamics. Since a more accurate physical picture often requires comparing analytical theory against explicit-chain model predictions, a commonly utilized methodology for coarse-grained molecular dynamics simulations of sequence-specific LLPS is also briefly outlined.


Subject(s)
Intrinsically Disordered Proteins , Amino Acid Sequence , Intrinsically Disordered Proteins/chemistry , Molecular Dynamics Simulation , Polymers/chemistry
SELECTION OF CITATIONS
SEARCH DETAIL
...