Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 562
Filter
Add more filters

Publication year range
1.
BMC Genomics ; 25(1): 795, 2024 Aug 22.
Article in English | MEDLINE | ID: mdl-39174916

ABSTRACT

BACKGROUND: Bread wheat (Triticum aestivum L.) endosperm contains starch and proteins, which determine the final yield, quality, and nutritional value of wheat grain. The preferentially expressed endosperm genes can precisely provide targets in the endosperm for improving wheat grain quality and nutrition using modern bioengineering technologies. However, the genes specifically expressed in developing endosperms remain largely unknown. RESULTS: In this study, 315 preferentially expressed endosperm genes (PEEGs) in the spring wheat landrace, Chinese Spring, were screened using data obtained from an open bioinformatics database, which reveals a unique grain reserve deposition process and special signal transduction in a developing wheat endosperm. Furthermore, transcription and accumulation of storage proteins in the wheat cultivar, XC26 were evaluated. The results revealed that 315 PEEG plays a critical role in storage protein fragment deposition and is a potential candidate for modifying grain quality and nutrition. CONCLUSION: These results provide new insights into endosperm development and candidate genes and promoters for improving wheat grain quality through genetic engineering and plant breeding techniques.


Subject(s)
Edible Grain , Endosperm , Gene Expression Regulation, Plant , Triticum , Triticum/genetics , Triticum/metabolism , Triticum/growth & development , Endosperm/genetics , Endosperm/metabolism , Edible Grain/genetics , Edible Grain/metabolism , Edible Grain/growth & development , Plant Proteins/genetics , Plant Proteins/metabolism , Genes, Plant , Gene Expression Profiling
2.
Antimicrob Agents Chemother ; : e0054924, 2024 Jul 30.
Article in English | MEDLINE | ID: mdl-39078131

ABSTRACT

The nucleos(t)ide analogs require phosphorylation to the pharmacologically active anabolites in cells. We investigated the hypothesis that single-nucleotide polymorphisms (SNPs) in genes that encode transporters and phosphodiesterase (PDE) enzymes involved in tenofovir (TFV), disoproxil fumarate (TDF), and lamivudine (3TC) disposition will be associated with concentrations of their phosphate anabolites and virologic response. Individuals with human immunodeficiency virus (HIV) and hepatitis B virus (HBV) coinfection receiving TDF/3TC-containing antiretroviral therapy were enrolled. Steady-state TFV diphosphate (TFV-DP) and 3TC triphosphate (3TC-TP) concentrations in peripheral blood mononuclear cells (PBMCs) and dried blood spot samples were quantified. The relationship between genetic variants and TFV-DP and 3TC-TP concentrations as well as with virologic response were examined using multivariable linear regression. Of the 136 participants (median age 43 years; 63% females), 6.6% had HBV non-suppression, and 7.4% had HIV non-suppression. The multidrug resistance protein 2 (encoded by ABCC2 rs2273697) SNP was associated with 3TC-TP concentrations in PBMCs. The human organic anion transporter-1 (encoded by SLC28A2) rs11854484 SNP was associated with HIV non-suppression, and when evaluated together with SNPs with marginal associations (ABCC2 rs717620 and PDE1C rs30561), participants with two or three variants compared to those with none of these variants had an adjusted odds ratio of 48.3 (confidence interval, 4.3-547.8) for HIV non-suppression. None of the SNPs were associated with HBV non-suppression. Our study identified ABCC2 SNP to be associated with 3TC-TP concentrations in PBMCs. Also, a combination of genetic variants of drug transporters and PDE was associated with HIV non-suppression.

3.
Anal Chem ; 96(29): 12165-12172, 2024 Jul 23.
Article in English | MEDLINE | ID: mdl-38989981

ABSTRACT

Exploring the high-performance photoelectronic properties of perovskite quantum dots (QDs) is desirable for paper-based photoelectrochemical (PEC) sensing;however, challenges remain in improving their stability and fundamental performance. Herein, a novel Z-scheme heterostructure with host-guest interaction by the confinement of CH3NH3PbBr3 QDs within Cu3(BTC)2 metal-organic framework (MOF) crystal (MAPbBr3@Cu3(BTC)2) is successfully constructed on the paper-based PEC device for ultrasensitive detection of Ochratoxin A (OTA), with the assistance of the exciton-plasmon interaction (EPI) effect. The host-guest interaction is estabilished by encapsulating MAPbBr3 QDs as guests within Cu3(BTC)2 MOF as a host, which prevents MAPbBr3 QDs from being damaged in the polar system, offering access to long-term stability with high-performance PEC properties. Benefiting from the precise alignment of energy levels, the photogenerated charge carriers can migrate according to the Z-scheme charge-transfer pathway under the driving force of the internal electric field, achieving a high photoelectric conversion efficiency. Upon OTA recognition, the EPI effect is activated to modulate the exciton response in MAPbBr3 QDs by accelerating radiative decay, finally achieving sensitive OTA sensing with a detection limit of 0.017 pg mL-1. We believe this work renders new insight into designing host-guest Z-scheme heterojunctions in constructing the paper-based PEC sensing platforms for environmental monitoring.

4.
Pediatr Res ; 95(4): 1088-1094, 2024 Mar.
Article in English | MEDLINE | ID: mdl-37990079

ABSTRACT

BACKGROUND: To analyze the clinical characteristics and outcomes of children with severe neurological symptoms associated with the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection during the Omicron pandemic in China. METHODS: This study used a questionnaire to obtain data from pediatric intensive care unit (PICU) centers in seven tertiary hospitals in Northeast China from December 1, 2022, to January 31, 2023. RESULTS: A total of 255 patients were confirmed to have SARS-CoV-2 infection, and 45 patients (17.65 %) were included in this study. Of these, seven (15.6%) patients died, and the median time from admission to death was 35 h (IQR, 14-120 h). Twenty (52.6%) survivors experienced neurological sequelae. Patients with platelet counts lower than 100 × 109/L had a higher incidence of complications such as multiple organ dysfunction, mechanical ventilation rate, and mortality. Cranial magnetic resonance imaging (MRI) always reveals cerebral tissue edema, with some severe lesions forming a softening site. CONCLUSION: Children infected with SARS-CoV-2 often exhibit severe neurological symptoms, and in some cases, they may rapidly develop malignant cerebral edema or herniation, leading to a fatal outcome. An early decrease in platelet count may associated with an unfavorable prognosis. IMPACT: Since early December 2022, China has gradually adjusted its prevention and control policy of SARS-CoV-2; Omicron outbreaks have occurred in some areas for a relatively short period. Due to the differences in ethnicity, endemic strains and vaccination status, there was a little difference from what has been reported about children with SARS-CoV-2 infection with severe neurological symptoms in abroad. This is the first multicenter clinical study in children with nervous system involvement after acute SARS-CoV-2 infection in China, and helpful for pediatricians to have a more comprehensive understanding of the clinical symptoms and prognosis of such disease.


Subject(s)
Brain Edema , COVID-19 , Child , Humans , SARS-CoV-2 , Pandemics , China/epidemiology , Retrospective Studies
5.
J Surg Res ; 300: 79-86, 2024 Aug.
Article in English | MEDLINE | ID: mdl-38796904

ABSTRACT

INTRODUCTION: Payment structured around Episodes of Care is a method for incentivizing decreased care utilization after major procedures. We examined Major Bowel Episodes of Care (MB-EoC)-the focus among general surgery procedures-within a large health system to determine the contribution of emergency bowel surgery to higher costs of care. METHODS: Adult MB-EoC cases from July 2018 to June 2021 were reviewed for 90-d costs, examining patient age, insurance, diagnosis, cost of care, and contributors to cost. For patients aged ≥45 y who had nonelective care for colon cancer, incidence of prior screening colonoscopy was examined. RESULTS: We identified 1292 colectomy cases. Mean age was 65 y. Of these patients, 90% had Medicare/commercial insurance. Colon cancer comprised 41% of primary diagnoses. Twenty-eight percent of cases were nonelective, more likely to have Medicaid/underinsured (21% versus 7%, P < 0.001), and had higher utilization of postdischarge cost-drivers. Ninety-day EoC per case cost was 66% higher for emergent versus elective cases. Of eligible emergency cancer cases, 43% (40/93) had undergone prior colonoscopy within 10 y. For patients with colon cancer, 90-d EoC per case was 39% higher for emergent versus elective cases. CONCLUSIONS: Emergency MB-EoC cases disproportionally contribute to higher 90-d care utilization and costs. Efforts to increase screening colonoscopy in appropriate populations may have a substantial impact on MB-EoC costs.


Subject(s)
Colectomy , Episode of Care , Humans , Colectomy/economics , Colectomy/statistics & numerical data , Aged , Middle Aged , Female , Male , United States , Colonic Neoplasms/surgery , Colonic Neoplasms/economics , Retrospective Studies , Health Care Costs/statistics & numerical data , Medicare/economics , Medicare/statistics & numerical data , Colonoscopy/economics , Colonoscopy/statistics & numerical data , Aged, 80 and over , Adult
6.
Public Health Nutr ; 27(1): e71, 2024 Feb 02.
Article in English | MEDLINE | ID: mdl-38305112

ABSTRACT

OBJECTIVE: To determine the appropriateness of three widely used formulas estimating 24-h urinary Na (24hUNa) from spot urine samples in the Chinese population. DESIGN: Systematic review and meta-analysis. SETTING: Literature review was conducted to identify studies for estimating 24hUNa using the Kawasaki, Tanaka and INTERSALT formulas simultaneously in PubMed, Embase and the Cochrane library databases. The mean difference (MD) and correlation coefficients (r) between measures and estimates from different formulas were assessed. PARTICIPANTS: Information extraction and quality assessment were performed in thirteen studies involving 8369 subjects. RESULTS: Two studies which affected the overall robustness were excluded in the 'leave-one-out' sensitivity analyses. Within the final meta-analysis included eleven studies and 7197 participants, 36·07 mmol/d (95 %CI 16·89, 55·25) of MD was observed in the Kawasaki formula, and -19·62 mmol/d (95 %CI -37·37, -1·87) in the Tanaka formula and -35·78 mmol/d (95 %CI -50·76, -20·80) in the INTERSALT formula; a pooled r-Fisher's Z of 0·39 (95 %CI 0·32, 0·45) in the Kawasaki formula, 0·43 (95 %CI 0·37, 0·49) in the Tanaka formula and 0·36 (95 %CI 0·31, 0·42) in the INTERSALT formula. Subgroup analyses were conducted to explore the possible factors affecting the accuracy of the formula estimation from three mainly aspects: population types, Na intake levels and urine specimen types. CONCLUSIONS: The meta-analysis suggested that the Tanaka formula performed a more accurate estimate in Chinese population. Time of collecting spot urine specimens and Na intake level of the sample population might be the main factors affecting the accuracy of the formula estimation.


Subject(s)
Sodium, Dietary , Urinalysis , Humans , China , Sodium/urine , Sodium, Dietary/urine
7.
J Sci Food Agric ; 104(9): 5625-5638, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38372395

ABSTRACT

BACKGROUND: Our objective in this study was to evaluate the effectiveness of oligosaccharides extracted from black ginseng (OSBG), innovatively prepared by a low-temperature steam-heating process, in the improvement of learning and memory impairment in mice, as well as the mechanism(s). RESULTS: Eight carbohydrates involving isomaltose and maltotetraose were detected in black gensing; monosaccharide residues including mannose and rhamnose were also discovered. OSBG-treated mice showed significant amelioration in recognition and spatial memory deficits compared to the scopolamine group. OSBG could decrease acetylcholinesterase activity in a tissue-dependent fashion but not in a dose-dependent manner. Furthermore, in contrast, OSBG administration resulted in significant upregulation superoxide dismutase, glutathione, glutathione peroxidase (GPx), and Kelch-like ECH-associated protein 1, downregulation of malondialdehyde and nuclear factor erythroid 2-related factor 2 in the tissues. Finally, at the genus level, we observed that the OSBG interventions increased the relative abundance of probiotics (e.g., Barnesiella, Staphylococcus, Clostridium_XlVb) and decreased pernicious bacteria such as Eisenbergiella and Intestinimonas, compared to the Alzheimer's disease mouse model group. Herein, our results demonstrate that OSBG restores the composition of the scopolamine-induced intestinal microbiota in mice, providing homeostasis of gut microbiota and providing evidence for microbiota-regulated therapeutic potential. CONCLUSION: Our results showed for the first time a clear role for OSBG in improving scopolamine-induced memory impairment by inhibiting cholinergic dysfunction in a tissue-dependent manner. Additionally, OSBG administration relieved oxidative stress by activating the Keap-1/Nrf2 pathway and modulating the gut microbiota. Collectively, OSBG may be a promising target for neuroprotective antioxidants for improving memory and cognition in Alzheimer's disease patients. © 2024 Society of Chemical Industry.


Subject(s)
Alzheimer Disease , Cognitive Dysfunction , Kelch-Like ECH-Associated Protein 1 , NF-E2-Related Factor 2 , Oligosaccharides , Panax , Plant Extracts , Animals , Alzheimer Disease/metabolism , Alzheimer Disease/drug therapy , Mice , NF-E2-Related Factor 2/metabolism , NF-E2-Related Factor 2/genetics , Panax/chemistry , Male , Oligosaccharides/chemistry , Oligosaccharides/administration & dosage , Oligosaccharides/pharmacology , Cognitive Dysfunction/drug therapy , Cognitive Dysfunction/metabolism , Kelch-Like ECH-Associated Protein 1/metabolism , Kelch-Like ECH-Associated Protein 1/genetics , Humans , Plant Extracts/chemistry , Plant Extracts/administration & dosage , Plant Extracts/pharmacology , Steam , Disease Models, Animal , Gastrointestinal Microbiome/drug effects , Oxidative Stress/drug effects , Hot Temperature , Superoxide Dismutase/metabolism , Glutathione Peroxidase/metabolism
8.
J Community Psychol ; 52(1): 105-133, 2024 01.
Article in English | MEDLINE | ID: mdl-37792561

ABSTRACT

Drug treatment courts (DTC) address substance use disorders (SUD) but not cooccurrencing HIV or hepatitis C virus (HCV). This pilot explored feasibility and preliminary outcomes of the Women's Initiative Supporting Health (WISH) intervention and health-related motivation, both based in self-determination theory (SDT) regarding HIV/HCV and SUD treatment. WISH feasibility study: 79 DTC women completed a one-time survey regarding motivation and willingness to engage in future interventions. WISH intervention: 22 women from DTC with SUD and HIV or HCV received a 6-session, peer motivational enhancement health behavior-oriented interventions. Recruitment strategies were feasible. SDT-based measures demonstrated internal consistency in this under-studied population, with perceived competence/autonomy associationed with motivation to reduce HIV/HCV/SUD risk. Women DTC participants indicated acceptance and showed internally consistent results in SDT-based motivation measures These WISH feasibility and intervention pilot studies lay a foundation for future studies addressing motivation to access healthcare among women DTC participants.


Subject(s)
HIV Infections , Hepatitis C , Substance-Related Disorders , Humans , Female , Motivation , Health Behavior , Substance-Related Disorders/therapy
9.
Ann Surg ; 278(3): e614-e619, 2023 09 01.
Article in English | MEDLINE | ID: mdl-36538621

ABSTRACT

OBJECTIVE: To define the impact of missed ordering of venous thromboembolism (VTE) chemoprophylaxis in high-risk general surgery populations. BACKGROUND: The primary cause of preventable death in surgical patients is VTE. Although guidelines and validated risk calculators assist in dosing recommendations, there remains considerable variability in ordering and adherence to recommended dosing. METHODS: All adult inpatients who underwent a general surgery procedure between 2016 and 2019 and were entered into Atrium Health National Surgical Quality Improvement Program registry were identified. Patients at high risk for VTE (2010 Caprini score ≥5) and without bleeding history and/or acute renal failure were included. Primary outcome was 30-day postoperative VTE. Electronic medical record identified compliance with "perfect" VTE chemoprophylaxis orders (pVTE): no missed orders and no inadequate dose ordering. Multivariable analysis examined association between pVTE and 30-day VTE events. RESULTS: A total of 19,578 patients were identified of which 4252 were high-risk inpatients. Hospital compliance of pVTE was present in 32.4%. pVTE was associated with shorter postoperative length of stay and lower perioperative red blood cell transfusions. There was 50% reduced odds of 30-day VTE event with pVTE (odds ratio: 0.50; 95% CI, 0.30-0.80) and 55% reduction in VTE event/mortality (odds ratio: 0.45; 95% CI, 0.31-0.63). After controlling for relevant covariates, pVTE remained significantly associated with decreased odds of VTE event and VTE event/mortality. CONCLUSIONS: pVTE ordering in high-risk general surgery patients was associated with 42% reduction in odds of postoperative 30-day VTE. Comprehending factors contributing to missed or suboptimal ordering and development of quality improvement strategies to reduce them are critical to improving outcomes.


Subject(s)
Venous Thromboembolism , Adult , Humans , Venous Thromboembolism/etiology , Venous Thromboembolism/prevention & control , Postoperative Complications/etiology , Risk Assessment/methods , Risk Factors , Chemoprevention , Retrospective Studies , Anticoagulants/therapeutic use
10.
Rev Cardiovasc Med ; 24(6): 165, 2023 Jun.
Article in English | MEDLINE | ID: mdl-39077540

ABSTRACT

Background: Heart failure (HF) patients in intensive care units (ICUs) are rather poorly studied based on varying left ventricular ejection fraction (LVEF) classification. Characteristics and prognosis of patients in ICUs with HF with mildly reduced ejection fraction (HFmrEF), HF with reduced ejection fraction (HFrEF) and HF with preserved ejection fraction (HFpEF) require further clarification. Methods: Data involving clinical information and 4-year follow-up records of HF patients were extracted and integrated from the Medical Information Mart for Intensive Care III (MIMIC-III) database. Tests were carried out to identity differences among these three HF subtypes. Prognostic analyses were performed using Kaplan-Meier survival analysis and Cox proportional-hazards regression modeling. To develop a novel prediction nomogram, forward selection was used as the best-fit model. Prognostic heterogeneity of the subgroups prespecified by stratification factors in pairwise comparisons was presented using forest plots. Results: A total of 4150 patients were enrolled in this study. HFmrEF had the lowest all-cause mortality rate during the 4-year follow-up, which was significantly different from HFrEF and HFpEF (Log-Rank p < 0.001). The Cox proportional-hazards regression model also showed that a comparison of HFrEF versus HFmrEF indicated a hazard ratio (HR) of 0.76 (95% CI 0.61-0.94, p = 0.011) and HFrEF versus HFpEF indicated a HR 0.93 (95% CI 0.82-1.07, p = 0.307). Following a multivariable analysis, 13 factors were confirmed as independent. A new nomogram was established and quantified with a concordance index (C-index) of 0.70 (95% CI 0.67-0.73), and the internal validation indicated the accuracy of the model. Stratification factors such as a history of coronary artery bypass grafting (CABG) and comorbidity of chronic obstructive pulmonary disease (COPD) induced prognostic heterogeneity among the three subtypes. Conclusions: Clinical characteristics and prognosis significantly varied among the three subtypes of HF patients in ICUs, with HFmrEF patients achieving the best prognosis. The novel prediction model, tailored for this population, showed a satisfying prediction ability.

11.
BMC Cancer ; 23(1): 264, 2023 Mar 23.
Article in English | MEDLINE | ID: mdl-36949462

ABSTRACT

BACKGROUND: The outcomes of patients with clear cell renal cell carcinoma (ccRCC) were dreadful due to lethal local recurrence and distant metastases. Accumulating evidence suggested that ccRCC was considered a metabolic disease and metabolism-associated genes (MAGs) exerted essential functions in tumor metastases. Thus, this study intends to seek whether the dysregulated metabolism promotes ccRCC metastases and explores underlying mechanisms. METHOD: Weighted gene co-expression network analysis (WGCNA) was employed based on 2131 MAGs to select genes mostly associated with ccRCC metastases for subsequent univariate Cox regression. On this basis, least absolute shrinkage and selection operator (LASSO) regression and multivariate Cox regression were employed to create a prognostic signature based on the cancer genome atlas kidney renal clear cell carcinoma (TCGA-KIRC) cohort. The prognostic signature was confirmed using E-MTAB-1980 and GSE22541 cohorts. Kaplan-Meier, receiver operating characteristic (ROC) curve, and univariate and multivariate Cox regression were applied to detect the predictability and independence of the signature in ccRCC patients. Functional enrichment analyses, immune cell infiltration examinations, and somatic variant investigations were employed to detect the biological roles of the signature. RESULT: A 12-gene-metabolism-associated prognostic signature, termed the MAPS by our team, was constructed. According to the MAPS, patients were divided into low- and high-risk subgroups and high-risk patients displayed inferior outcomes. The MAPS was validated as an independent and reliable biomarker in ccRCC patients for forecasting the prognosis and progression of ccRCC patients. Functionally, the MAPS was closely associated with metabolism dysregulation, tumor metastases, and immune responses in which the high-risk tumors were in an immunosuppressive status. Besides, high-risk patients benefited more from immunotherapy and held a higher tumor mutation burden (TMB) than low-risk patients. CONCLUSION: The 12-gene MAPS with prominent biological roles could independently and reliably forecast the outcomes of ccRCC patients, and provide clues to uncover the latent mechanism in which dysregulated metabolism controlled ccRCC metastases.


Subject(s)
Carcinoma, Renal Cell , Carcinoma , Kidney Neoplasms , Humans , Carcinoma, Renal Cell/genetics , Gene Expression Profiling , Immunosuppressive Agents , Kidney Neoplasms/genetics
12.
Int J Syst Evol Microbiol ; 73(11)2023 Nov.
Article in English | MEDLINE | ID: mdl-37917138

ABSTRACT

A Gram-negative, rod-shaped, aerobic and light pink-pigmented bacterium, designated XAAS-A31T, was isolated from the soil of a Populus euphratica forest located near Hotan City, Xinjiang, PR China. Polyphasic, taxonomic and phylogenomic analyses were used to determine the taxonomy position of the strain. Phylogenetic analysis based on 16S rRNA gene sequence analysis indicated that XAAS-A31T belongs to the genus Pontibacter, family Hymenobacteraceae, and shows highest sequence similarity to Pontibacter silvestris XAAS-R86T (96.2 %). The digital DNA-DNA hybridization (22.0 %-19.2 %) and orthologous average nucleotide identity (74.1 %-72.7 %) values relative to closest validly published Pontibacter species were lower than the recommended thresholds of 70 and 96 %, respectively. The cells grew at 4-40 °C (optimum, 28-30 °C), at pH 6.5-8.5 (pH 7.0-7.5) and with 0-8% NaCl (0.5-2.0% NaCl). The main respiratory quinone of XAAS-A31T is MK-7, and the principal cellular fatty acids are iso-C15 : 0, iso-C17 : 0 3OH and summed feature 4 (iso-C17 : 1 I and/or anteiso-C17 : 1 B). The major polar lipids are phosphatidylethanolamine, three unidentified amino-phospholipids, one unidentified glycolipid and eight unidentified lipids. The genome length of strain XAAS-A31T is 5.48 Mbp with a DNA G+C content of 44.2 mol% and 4013 protein-coding genes. Phenotypic and genotypic data suggested that XAAS-A31T represents a novel Pontibacter species, for which we propose the name Pontibacter harenae sp. nov. and type strain XAAS-A31T (=CCTCC AB 2017162T=KCTC 62049T).


Subject(s)
Populus , Soil , Base Composition , Fatty Acids/chemistry , Phylogeny , RNA, Ribosomal, 16S/genetics , Sodium Chloride , Sequence Analysis, DNA , DNA, Bacterial/genetics , Bacterial Typing Techniques , Forests
13.
J Phys Chem A ; 127(31): 6400-6411, 2023 Aug 10.
Article in English | MEDLINE | ID: mdl-37498222

ABSTRACT

Al-containing catalysts, e.g., Al(OTf)3, show good catalytic performance toward the conversion of cellulose to fructose in methanol solution. Here, we report the catalytic isomerization and alcoholysis mechanisms for the conversion of cellobiose to fructose at the PBE0/6-311++G(d,p), aug-cc-pVTZ theoretical level, combining the relevant experimental verifications of electrospray ionization mass spectrometry (ESI-MS), high-performance liquid chromatography (HPLC), and the attenuated total reflection-infrared (ATR-IR) spectra. From the alcoholysis of Al(OTf)3 in methanol solution, the catalytically active species involves both the [CH3OH2]+ Brønsted acid and the [Al(CH3O)(OTf)(CH3OH)4]+ Lewis acid. There are two reaction pathways, i.e., one through glucose (glycosidic bond cleavage followed by isomerization, w-G) and another through cellobiulose (isomerization followed by glycosidic bond cleavage, w-L). The Lewis acid ([Al(CH3O)(OTf)(CH3OH)4]+) is responsible for the aldose-ketose tautomerization, while the Brønsted acid ([CH3OH2]+) is in charge of ring-opening, ring-closure, and glycosidic bond cleavage. For both w-G and w-L, the rate-determining steps are related to the intramolecular [1,2]-H shift between C1-C2 for the aldose-ketose tautomerization catalyzed by the [Al(CH3O)(OTf)(CH3OH)4]+ species. The Lewis acid ([Al(CH3O)(OTf)(CH3OH)4]+) exhibits higher catalytic activity toward the aldose-ketose tautomerization of glycosyl-chain-glucose to glycosyl-chain-fructose than that of chain-glucose to chain-fructose. Besides, the Brønsted acid ([CH3OH2]+) shows higher catalytic activity toward the glycosidic bond cleavage of cellobiulose than that of cellobiose. Kinetically, the w-L pathway is predominant, whereas the w-G pathway is minor. The theoretically proposed mechanism has been experimentally testified. These insights may advance on the novel design of the catalytic system toward the conversion of cellulose to fructose.

14.
Surg Endosc ; 37(10): 7901-7907, 2023 10.
Article in English | MEDLINE | ID: mdl-37418149

ABSTRACT

BACKGROUND: Freestanding emergency departments (FSEDs) have generated improved hospital metrics, including decreased ED wait times and increased patient selection. Patient outcomes and process safety have not been evaluated. This study investigates the safety of FSED virtual triage in the emergency general surgery (EGS) patient population. METHODS AND PROCEDURES: A retrospective review evaluated all adult EGS patients admitted to a community hospital between January 2016 and December 2021 who either presented at a FSED and received virtual evaluation from a surgical team (fEGS) or presented at the community hospital emergency department and received in-person evaluation from the same surgical group (cEGS). Patients' demographics, acute care utilization history, and clinical characteristics at the onset of the index visit were used to build a propensity score model and stabilized Inverse Probability of Treatment Weights (IPTW) were used to create a weighted sample. Multivariable regression models were then employed to the weighted sample to evaluate the treatment effect of virtual triage compared to in-person evaluation on short-term outcomes, including length of stay (LOS) and 30-day readmission and mortality. Variables which occurred during the index visit (such as surgery duration and type of surgery) were adjusted for in the multivariable analyses. RESULTS: Of 1962 patients, 631 (32.2%) were initially evaluated virtually (fEGS) and 1331 (67.8%) underwent an in-person evaluation (cEGS). Baseline characteristics demonstrated significant differences between the cohorts in gender, race, payer status, BMI, and CCI score. Baseline risks were well balanced in the IPTW-weighted sample (SD range 0.002-0.18). Multivariable analysis found no significant differences between the balanced cohorts in 30-day readmission, 30-day mortality, and LOS (p > 0.05 for all). CONCLUSION: Patients who undergo virtual triage have similar outcomes to those who undergo in-person triage for EGS diagnoses. Virtual triage at FSED for these EGS patients may be an efficient and safe means for initial evaluation.


Subject(s)
General Surgery , Triage , Adult , Humans , Propensity Score , Emergency Service, Hospital , Hospitalization , Length of Stay , Retrospective Studies
15.
BMC Geriatr ; 23(1): 510, 2023 08 23.
Article in English | MEDLINE | ID: mdl-37612640

ABSTRACT

BACKGROUND: The impact of consuming soybean and its products on cardiovascular events (CVEs), cardiovascular mortality, and all-cause mortality remains unclear. This study aimed to examine the prospective association of soybean consumption with CVEs, cardiovascular mortality, and all-cause mortality among the elderly population in rural China. METHODS: The Northeast China Rural Cardiovascular Health Study included 2477 elderly individuals (mean age 67 ± 6 years, 49.97% men) in the initial phase of the study from 2012 to 2013, with a follow-up period between 2015 and 2017. Soybean consumption was categorized as follows: low-frequency consumption: rare consumption; moderate-frequency consumption: two to three times/week; high-frequency consumption: ≥ four times/week. Cox proportional hazard analysis assessed the potential relationship of soybean consumption with CVEs, cardiovascular mortality, and all-cause mortality. RESULTS: The prevalence of soybean and its product consumption was as follows: 38.3% for low-frequency consumption (43.8% for women; 32.8% for men), 49.7% for moderate-frequency consumption (45.8% for women; 53.7% for men), and 11.9% for high-frequency consumption (10.4% for women; 13.5% for men). After adjusting for possible confounders, Cox proportional hazard analysis revealed that the frequency of soybean consumption was an effective predictor of CVEs [Hazard ratio (HR) high (95% CI): 0.555 (0.348, 0.883)], stroke [HR moderate (95% CI): 0.672 (0.494, 0.913); HR high (95% CI): 0.483 (0.276, 0.842)], and all-cause mortality [HR high (95% CI): 0.540 (0.310, 0.942)] in the overall older population. High-frequency consumption of soybean [HR (95% CI): 0.467 (0.225, 0.968)] and moderate-frequency consumption [HR (95% CI): 0.458 (0.270, 0.779)] were associated with stroke events in older men and women, respectively. In addition, high-frequency consumption of soybean [HR (95% CI): 0.437 (0.197, 0.968)] decreased the risk of CVEs in older women. CONCLUSION: Soybean consumption is closely associated with CVEs and all-cause mortality in older individuals residing in rural areas, with a significant gender discrepancy in this relationship. These findings provide new insights into the impact of soybean consumption on cardiovascular well-being in the elderly rural population, thus enhancing our understanding of this field of interest.


Subject(s)
Rural Population , Stroke , Male , Humans , Aged , Female , Glycine max , Prospective Studies , China/epidemiology
16.
Urol Int ; 107(6): 608-616, 2023.
Article in English | MEDLINE | ID: mdl-37231953

ABSTRACT

INTRODUCTION: The aim of the study was to evaluate the effect of transversus abdominal (TAP) block for postoperative analgesia after renal transplantation. METHODS: We searched PubMed, Embase, the Cochrane Library, and the Chinese Biomedical Literature Database for relevant studies. The related trials that met the inclusion criteria were analysed using RevMan 5.4 software. RESULTS: We found 15 randomized controlled trials and two retrospective studies that, on meta-analysis, showed that TAP block group had significantly lower requirement of opioid consumption (MD -11.89, 95% CI -17.13∼-6.65) at 24 h for pain mitigation and pain intensity VAS at rest at 6h (MD -1.13, 95% CI -1.76∼-0.49), 12 h (MD -0.83, 95% CI -1.30∼-0.36) and 24 h (MD -0.47, 95% CI -0.75∼-0.20). Also, postoperative nausea and vomiting were not statistically significant (RR 1.00, 95% CI 0.78∼1.27). CONCLUSION: TAP block appears to significantly reduce renal transplantation pain and the amount of opioid use on the first postoperative day after renal transplantation.


Subject(s)
Analgesics, Opioid , Kidney Transplantation , Humans , Analgesics, Opioid/therapeutic use , Retrospective Studies , Pain, Postoperative/etiology , Pain, Postoperative/prevention & control , Abdominal Muscles
17.
Proc Natl Acad Sci U S A ; 117(22): 12306-12314, 2020 06 02.
Article in English | MEDLINE | ID: mdl-32439709

ABSTRACT

Tissue-resident memory CD8 T (TRM) cells are a unique immune memory subset that develops and remains in peripheral tissues at the site of infection, providing future host resistance upon reexposure to that pathogen. In the pulmonary system, TRM are identified through S1P antagonist CD69 and expression of integrins CD103/ß7 and CD49a/CD29(ß1). Contrary to the established role of CD69 on CD8 T cells, the functions of CD103 and CD49a on this population are not well defined. This study examines the expression patterns and functions of CD103 and CD49a with a specific focus on their impact on T cell motility during influenza virus infection. We show that the TRM cell surface phenotype develops by 2 wk postinfection, with the majority of the population expressing CD49a and a subset that is also positive for CD103. Despite a previously established role in retaining TRM in peripheral tissues, CD49a facilitates locomotion of virus-specific CD8 T cells, both in vitro and in vivo. These results demonstrate that CD49a may contribute to local surveillance mechanisms of the TRM population.


Subject(s)
Antigens, CD/immunology , Influenza A Virus, H3N2 Subtype/physiology , Influenza, Human/immunology , Integrin alpha Chains/immunology , Integrin alpha1/metabolism , Animals , Antigens, CD/genetics , CD8-Positive T-Lymphocytes/cytology , CD8-Positive T-Lymphocytes/immunology , Cell Adhesion , Cell Movement , Humans , Immunologic Memory , Influenza A Virus, H3N2 Subtype/genetics , Influenza, Human/genetics , Influenza, Human/physiopathology , Influenza, Human/virology , Integrin alpha Chains/genetics , Integrin alpha1/genetics , Mice, Inbred C57BL
18.
J Stroke Cerebrovasc Dis ; 32(7): 107147, 2023 Jul.
Article in English | MEDLINE | ID: mdl-37119791

ABSTRACT

INTRODUCTION: The Critical Area Perfusion Score (CAPS) predicts functional outcomes in vertebrobasilar thrombectomy patients based on computed tomography perfusion (CTP) hypoperfusion. We compared CAPS to the clinical-radiographic Charlotte Large artery occlusion Endovascular therapy Outcome Score (CLEOS). METHODS: Acute basilar thrombosis patients from January 2017-December 2021 were included in this retrospective analysis from a health system's stroke registry. Inter-rater reliability was assessed for 6 CAPS raters. A logistic regression with CAPS and CLEOS as predictors was performed to predict 90-day modified Rankin Scale (mRS) score 4-6. Area under the curve (AUC) analyses were performed to evaluate prognostic ability. RESULTS: 55 patients, mean age 65.8 (± 13.1) years and median NIHSS score 15.55-24, were included. Light's kappa among 6 raters for favorable versus unfavorable CAPS was 0.633 (95% CI 0.497-0.785). Increased CLEOS was associated with elevated odds of a poor outcome (odds ratio (OR) 1.0010, 95% CI 1.0007-1.0014, p<0.01), though CAPS was not (OR 1.0028, 95% CI 0.9420-1.0676, p=0.93). An overall favorable trend was observed for CLEOS (AUC 0.69, 95% CI 0.54-0.84) versus CAPS (AUC 0.49, 95% CI 0.34-0.64; p=0.051). Among 85.5% of patients with endovascular reperfusion, CLEOS had a statistically higher sensitivity than CAPS at identifying poor 90-day outcomes (71% versus 21%, p=0.003). CONCLUSIONS: CLEOS demonstrated better predictive ability than CAPS for poor outcomes overall and in patients achieving reperfusion after basilar thrombectomy.


Subject(s)
Arterial Occlusive Diseases , Endovascular Procedures , Stroke , Vertebrobasilar Insufficiency , Humans , Aged , Treatment Outcome , Retrospective Studies , Reproducibility of Results , Thrombectomy/adverse effects , Thrombectomy/methods , Basilar Artery/diagnostic imaging , Arterial Occlusive Diseases/etiology , Endovascular Procedures/adverse effects , Endovascular Procedures/methods , Perfusion , Vertebrobasilar Insufficiency/diagnostic imaging , Vertebrobasilar Insufficiency/therapy , Vertebrobasilar Insufficiency/etiology
19.
J Environ Manage ; 334: 117509, 2023 May 15.
Article in English | MEDLINE | ID: mdl-36801799

ABSTRACT

In this study, the amendment of biochar-activated peroxydisulfate during composting to remove antibiotic resistance genes (ARGs) by direct (microbial community succession) and indirect methods (physicochemical factors) was analyzed. When implementing indirect methods, the synergistic effect of peroxydisulfate with biochar optimized the physicochemical habitat of compost, maintaining its moisture within a range of 62.95%-65.71%, and a pH of 6.87-7.73, and causing the compost to mature 18 days earlier than the control groups. The direct methods caused the optimized physicochemical habitat to adjust the microbial communities and reduce the abundance of most of the ARG host bacteria (Thermopolyspora, Thermobifida, and Saccharomonospora), thus inhibiting this substance's amplification. Heatmap analysis confirmed the necessary connection between physicochemical factors, microbial communities, and ARGs. Moreover, a mantel test confirmed the direct significant effect of the microbial communities on ARGs and the indirect significant effect of physicochemical factors on ARGs. The results showed that the abundance of more ARGs was down-regulated at the end of composting and regulated by biochar-activated peroxydisulfate, especially for the abundance of AbaF, tet(44), golS, and mryA, which was significantly decreased by 0.87-1.07 fold. These results provide new insights into the removal of ARGs during composting.


Subject(s)
Composting , Genes, Bacterial , Composting/methods , Anti-Bacterial Agents/pharmacology , Manure/microbiology , Drug Resistance, Microbial/genetics
20.
Pharm Biol ; 61(1): 427-436, 2023 Dec.
Article in English | MEDLINE | ID: mdl-36772833

ABSTRACT

CONTEXT: Sanziguben (SZGB) is an empirical prescription used in traditional Chinese medicine to treat diabetic nephropathy (DN). As an abundant and primarily effective component of SZGB, Sanziguben polysaccharides (SZP) can be digested by flora to generate biological activity. OBJECTIVE: Our study aimed to clarify the potential mechanism of SZP in improving chronic DN. MATERIALS AND METHODS: Male db/db mice were randomized into DN, SZP (500 mg/kg) and metformin (MET, 300 mg/kg) groups. Wild-type littermates served as the normal control (NC) group. The drug was orally administered for 8 weeks. Enzyme-linked immunosorbent assay was used to detect the inflammatory factors. Proteins related to inflammation were evaluated using western blotting and immunohistochemical examination. Gut microbiota was analysed using 16S rRNA sequencing. RESULTS: SZP significantly reduced 24 h urine albumin (p < 0.05) of DN mice. Compared to DN group, SZP significantly decreased the homeostasis model assessment of insulin resistance index, serum creatinine and blood urea nitrogen levels (20.27 ± 3.50 vs. 33.64 ± 4.85, 19.22 ± 3.77 vs. 32.52 ± 3.05 µmol/L, 13.23 ± 1.42 vs. 16.27 ± 0.77 mmol/L, respectively), and mitigated renal damage. SZP also regulated gut microbiota and decreased the abundance of Gram-negative bacteria (Proteobacteria, Klebsiella and Escherichia-Shigella). Subsequently, SZP reduced lipopolysaccharides levels (1.06- to 1.93-fold) of DN mice. Furthermore, SZP inhibited the expression levels of TLR4, phospho-NF-κB p65, NLRP3 proteins and interleukin (IL)-18 and IL-1ß. CONCLUSIONS: These results demonstrated that SZP improved intestinal flora disorder and inhibited the TLR4/NF-κB/NLRP3 pathway to alleviate DN.


Subject(s)
Diabetes Mellitus , Diabetic Nephropathies , Gastrointestinal Microbiome , Mice , Male , Animals , NF-kappa B/metabolism , Diabetic Nephropathies/drug therapy , Diabetic Nephropathies/metabolism , NLR Family, Pyrin Domain-Containing 3 Protein/metabolism , Toll-Like Receptor 4/metabolism , RNA, Ribosomal, 16S , Polysaccharides/pharmacology , Polysaccharides/therapeutic use
SELECTION OF CITATIONS
SEARCH DETAIL