613 results on '"H-H. Yan"'
Search Results
2. Evidence of a common origin for the Virgo Overdensity and Hercules-Aquila Cloud from abundances and orbital parameters
- Author
-
H. H. Yan, W.B. Shi, Y.Q. Chen, J.K. Zhao, and G. Zhao
- Subjects
Space and Planetary Science ,Astronomy and Astrophysics - Published
- 2023
3. Microstructure and properties of as-cast 30Mn steel
- Author
-
H. H. Yan, Y. Hu, and D. W. Zhao
- Subjects
Physics ,QC1-999 - Abstract
The microstructure and properties of as-cast 30Mn steel with and without adding rare earths were systematically investigated. The microstructure was characterized by optical microscopy and scanning electron microscopy combined with energy-dispersive spectroscopy. The addition of rare earths could improve the cast structure. The austenitic transformation of the two steels was studied by differential scanning calorimetry. The onset and finish temperature of austenite increased, and the relative content of ferrites and pearlites changed. Rare earths, when added, improved the strength and plasticity, and increase the impact toughness by 31.3%. The heat deformation behavior was analyzed by using a Gleeble-3500 thermo-mechanical simulator. The onset of dynamic recrystallization was delayed, and the hot deformation microstructures were refined.
- Published
- 2018
- Full Text
- View/download PDF
4. Bending deformation behavior of Zr65Cu17.5Ni10Al7.5 bulk metallic glass with different solidification cooling rate
- Author
-
Y. Hu, H. H. Yan, Z. J. Yan, and X. G. Wang
- Subjects
Physics ,QC1-999 - Abstract
In order to further clarify the relationship between the free volume and bending plasticity, the bending properties of Zr65Cu17.5Ni10Al7.5 bulk metallic glass (BMG) samples with different thicknesses corresponding to different solidification cooling rates were investigated. The results show that the bending plasticity of Zr65Cu17.5Ni10Al7.5 BMG decreases with the decrease of cooling rate, which is consistent with the evolution of shear bands density revealed by the investigation of microstructure. These phenomena are mainly attributed to the decrease of free volume content with the decrease of cooling rates in spite of the increase of nanocrystallization fraction, which further confirm that free volume plays a crucial role in the deformation process of the BMGs.
- Published
- 2018
- Full Text
- View/download PDF
5. EP08.01-085 Sintilimab versus Pembrolizumab as Monotherapy or in Combination with Chemotherapy for Treatment Naïve Metastatic Non-small Cell Lung Cancer
- Author
-
S.-Y. Liu, Q. Zhou, H.-H. Yan, B. Gan, M.-Y. Yang, J.-Y. Deng, H.-Y. Tu, X.-C. Zhang, J. Su, J.-J. Yang, and Y.-L. Wu
- Subjects
Pulmonary and Respiratory Medicine ,Oncology - Published
- 2022
6. First Report of Epicoccum sorghinum Causing Leaf Spot on Paeonia suffruticosa in China
- Author
-
H. M. Yang, R. Q. Zhang, J. X. Li, J. Jin, and H. H. Yan
- Subjects
Plant Science ,Agronomy and Crop Science - Published
- 2023
7. LBA2 Phase II study of PD-L1 expression guidance on neoadjuvant (NA) nivolumab (Nivo) monotherapy with or without platinum-doublet chemotherapy in resectable NSCLC
- Author
-
S.-Y. Liu, S. Dong, R.-Q. Liao, B. Jiang, J.-T. Zhang, J.-T. Lin, S. Zhang, J. Yang, Q. Nie, X. Yang, Q. Wang, H.-H. Yan, L. Yan, H. Tu, B.-C. Wang, J.-J. Yang, Q. Zhou, S.-Y.M. Liu, W.-Z. Zhong, and Y.-L. Wu
- Subjects
Oncology ,Immunology and Allergy - Published
- 2022
8. 385P Efficacy and safety of pyrotinib in untreated, advanced non-small cell lung cancer with HER2 mutations: A parallel, multi-center, multi-cohort patient-centric study (CTONG1702 and 1705)
- Author
-
S-Y.M. Liu, H-Y. Tu, X-W. Wei, H-H. Yan, X. Dong, J. Cui, Z. Zhou, C. Xu, M. Zheng, Y. Li, Z. Wang, Y. Du, Y. Chen, R. Ma, B. Wang, S. Cang, J-J. Yang, H. Chen, Q. Zhou, and Y-L. Wu
- Subjects
Oncology ,Hematology - Published
- 2022
9. 1741P Malignant effusion-derived non-small cell lung cancer organoid might be a feasible in vitro model for therapeutic screening
- Author
-
H-M. Wang, Qin Zhou, Q-Y. Gao, Zhao-Yang Wang, W-F. Li, C-Y. Zhang, J-W. Su, Z-X. Chen, J. Yang, K-C. Peng, H D Chen, H-H. Yan, S-L. Zhang, C-R. Xu, Y-F. Li, and Jian Su
- Subjects
Oncology ,Malignant effusion ,business.industry ,medicine ,Cancer research ,Organoid ,Hematology ,Non small cell ,Lung cancer ,medicine.disease ,business ,In vitro model - Published
- 2021
10. Corn starch processing wastewater treated by a full-scale expanded granular sludge bed reactor and comprehensive analysis of microbial community at low and high organic loading rate
- Author
-
Q Yin, X Y Guo, L Han, H H Yan, and Y G Nian
- Subjects
food.ingredient ,biology ,Chemistry ,Chemical oxygen demand ,Bacteroidetes ,biology.organism_classification ,Pulp and paper industry ,food ,Wastewater ,Microbial population biology ,Syntrophus ,Euryarchaeota ,Proteobacteria ,Acidobacteria - Abstract
In this study, a full-scale expanded granular sludge bed (EGSB) reactor treating corn starch processing wastewater (CSPW) was monitored. The efficacy and microbial diversity of sludge granules were thoroughly investigated. The results demonstrated that 90.7% of the average chemical oxygen demand (COD) removal efficiency was observed to be in the range of an organic load rate (OLR) of 1.3 to 18.7 g COD/L·d. The Illumina MiSeq sequencing revealed that Proteobacteria, Bacteroidetes, Acidobacteria and Euryarchaeota were the dominant phyla. Acetoclastic and hydrogenotrophic methanogens were shown to play functions in methane production and the maintenance of the granular sludge under high and low OLR operation conditions, respectively. Syntrophorhabdus, Syntrophus and Candidatus Cloacimonas had the correlation with the transformation of the proteinaceous subtances into VFAs. The results will guide development of microbial management methods to improve the process stability of EGSB treating CSPW.
- Published
- 2021
11. 439O Tracking spatiotemporal T790M heterogeneity in patients with EGFR-mutant advanced NSCLC after acquired resistance to EGFR TKIs
- Author
-
Y-C. Zhang, C. Pi, E-E. Ke, Z-H. Chen, J. Su, Z-Y. Dong, C-R. Xu, H-H. Yan, H-Y. Tu, W-Z. Zhong, X-C. Zhang, J-J. Yang, X-N. Yang, Q. Zhou, and Y-L. Wu
- Subjects
Oncology ,Hematology - Published
- 2016
12. Propensity score-matching analysis of local consolidative therapy for patients with oligometastatic non-small cell lung cancer without progression after front-line systemic therapy
- Author
-
S.-Y. Liu, X.-N. Yang, H-H. Yan, J-T. Zhang, W.-Z. Zhong, Y-L. Wu, and J-T. Lin
- Subjects
Oncology ,medicine.medical_specialty ,Matching (statistics) ,business.industry ,Front line ,Hematology ,medicine.disease ,Systemic therapy ,Internal medicine ,Medicine ,Non small cell ,business ,Lung cancer - Published
- 2017
13. [The effect of preoperative induction chemotherapy on long-term survival of patients with advanced squamous cell carcinoma of the oral cavity tongue]
- Author
-
X R, Zhang, F, Yu, H H, Yan, G J, Tan, Y B, Zhou, and X K, Liu
- Published
- 2016
14. [Long-term outcome of laryngeal framework reconstruction using titanium mesh in glottic cancer after frontolateral vertical partial laryngectomy]
- Author
-
D, Wu, J C, Yu, H H, Yan, J H, Mai, Q L, Li, H, Li, A K, Yang, Q, Zhang, Z M, Guo, and X K, Liu
- Published
- 2016
15. Hepcidin Expression Comparison and Its Significance in Patients with Cervical Cancer and with Cervical Intraepithelial Neoplasia
- Author
-
H-H Yan and C-Y Zang
- Subjects
Oncology ,Cervical cancer ,medicine.medical_specialty ,biology ,business.industry ,Obstetrics and Gynecology ,medicine.disease ,Cervical intraepithelial neoplasia ,Hepcidin ,Internal medicine ,medicine ,biology.protein ,In patient ,business - Published
- 2016
16. Bending deformation behavior of Zr65Cu17.5Ni10Al7.5 bulk metallic glass with different solidification cooling rate
- Author
-
Zhipeng Yan, X. G. Wang, Yong Hu, and H. H. Yan
- Subjects
010302 applied physics ,Amorphous metal ,Materials science ,Zirconium alloy ,General Physics and Astronomy ,02 engineering and technology ,Bending ,Plasticity ,021001 nanoscience & nanotechnology ,Microstructure ,01 natural sciences ,lcsh:QC1-999 ,Shear (sheet metal) ,Volume (thermodynamics) ,0103 physical sciences ,Deformation (engineering) ,Composite material ,0210 nano-technology ,lcsh:Physics - Abstract
In order to further clarify the relationship between the free volume and bending plasticity, the bending properties of Zr65Cu17.5Ni10Al7.5 bulk metallic glass (BMG) samples with different thicknesses corresponding to different solidification cooling rates were investigated. The results show that the bending plasticity of Zr65Cu17.5Ni10Al7.5 BMG decreases with the decrease of cooling rate, which is consistent with the evolution of shear bands density revealed by the investigation of microstructure. These phenomena are mainly attributed to the decrease of free volume content with the decrease of cooling rates in spite of the increase of nanocrystallization fraction, which further confirm that free volume plays a crucial role in the deformation process of the BMGs.
- Published
- 2018
17. Metallic glass coating on metals plate by adjusted explosive welding technique
- Author
-
Jiecheng Wang, H. H. Yan, Kaixin Liu, Qilue Chen, Xiaojie Li, and Weidong Liu
- Subjects
Heat-affected zone ,Materials science ,Amorphous metal ,Metallurgy ,General Physics and Astronomy ,Surfaces and Interfaces ,General Chemistry ,Welding ,engineering.material ,Condensed Matter Physics ,Electric resistance welding ,Surfaces, Coatings and Films ,Amorphous solid ,law.invention ,Explosion welding ,Coating ,law ,engineering ,FOIL method - Abstract
Using an adjusted explosive welding technique, an aluminum plate has been coated by a Fe-based metallic glass foil in this work. Scanning electronic micrographs reveal a defect-free metallurgical bonding between the Fe-based metallic glass foil and the aluminum plate. Experimental evidence indicates that the Fe-based metallic glass foil almost retains its amorphous state and mechanical properties after the explosive welding process. Additionally, the detailed explosive welding process has been simulated by a self-developed hydro-code and the bonding mechanism has been investigated by numerical analysis. The successful welding between the Fe-based metallic glass foil and the aluminum plate provides a new way to obtain amorphous coating on general metal substrates.
- Published
- 2009
18. Synthesis of TiO2 nanoparticles from sprayed droplets of titanium tetrachloride by the gas-phase detonation method
- Author
-
Yandong Qu, H. H. Yan, Xin Ouyang, F. Mo, and X. J. Li
- Subjects
Anatase ,Materials science ,General Chemical Engineering ,Inorganic chemistry ,Detonation ,General Physics and Astronomy ,Energy Engineering and Power Technology ,chemistry.chemical_element ,General Chemistry ,chemistry.chemical_compound ,Fuel Technology ,chemistry ,Rutile ,Phase (matter) ,Titanium dioxide ,Titanium tetrachloride ,Crystallite ,Titanium - Abstract
Nanostructured polycrystalline titanium dioxides are produced by gas-phase detonation and pyrohydrolysis. Titanium tetrachloride (TiCl4) is used as a precursor in the gas phase, and a premixed gas (O2 and H2) is used as a source of energy. The product is a mixture of TiO2 crystals in the rutile phase (80%) and anatase phase (20%).
- Published
- 2008
19. Preparation and characterization of nanosized TiO2 powders by gaseous detonation method
- Author
-
F. Mo, Xin Ouyang, Chunfei Zhao, X. J. Li, and H. H. Yan
- Subjects
Diffraction ,Anatase ,Materials science ,Mixed crystal ,Mechanical Engineering ,Detonation ,Mineralogy ,Nanoparticle ,Condensed Matter Physics ,Characterization (materials science) ,Chemical engineering ,Mechanics of Materials ,Transmission electron microscopy ,Rutile ,General Materials Science - Abstract
Nanosized TiO2 powders were prepared for the first time by gaseous detonation method. The structure, composition and size distribution of the detonation product were systematically characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results indicate the powders are a mixed crystal of rutile and anatase exhibiting non-spherical grains, and the average size of particles was between 20 and 40 nm. The results of detonation pressure measurement show that the reaction took place under a deflagration-to-detonation transition (DDT) course.
- Published
- 2008
20. Explosive welding of multilayer amorphous ribbons
- Author
-
X. J. Li, Yandong Qu, and H. H. Yan
- Subjects
Amorphous metal ,Materials science ,General Chemical Engineering ,Metallurgy ,General Physics and Astronomy ,Energy Engineering and Power Technology ,General Chemistry ,Microstructure ,Amorphous solid ,law.invention ,Explosion welding ,Fuel Technology ,Optical microscope ,law ,Composite material - Abstract
The feasibility of bonding amorphous ribbons via explosive welding (EW) is demonstrated. With 20–120 layers of Fe78B13Si9 and Fe40Ni40P14B6 amorphous ribbons 25 µm thick and 10 cm wide, the plate samples are bonded by using two setups with a collision point velocity of 3900–4800 m/sec and a flyer plate velocity of 570–900 m/sec. The largest area of the bonded sample is 30 cm2. The microstructures of the samples are observed by optical microscopy and X-ray diffractometry. Based on the formation characteristics of amorphous alloys and heat-exchange characteristics during the EW process, a square-wave model for the temperature distribution across the interface is proposed. It can be used to explain the reasons for the samples keeping the amorphous state across the interface after explosive welding. The calculated results are in good agreement with the experiments.
- Published
- 2008
21. Emissions of halocarbons from mobile vehicle air conditioning system in Hong Kong
- Author
-
J. M. Ou, Hai Guo, and H. H. Yan
- Subjects
Environmental Engineering ,Health, Toxicology and Mutagenesis ,Ozone depletion potential ,Refrigerant ,chemistry.chemical_compound ,Air Pollution ,Montreal Protocol ,Environmental Chemistry ,Air Conditioning ,Scenario analysis ,Emission inventory ,Waste Management and Disposal ,Air Pollutants ,business.industry ,Hydrocarbons, Halogenated ,Environmental engineering ,Uncertainty ,Refrigeration ,Pollution ,Motor Vehicles ,chemistry ,Air conditioning ,Greenhouse gas ,Environmental science ,Hong Kong ,business ,Monte Carlo Method ,Environmental Monitoring - Abstract
During the implementation of Montreal Protocol, emission inventories of halocarbons in different sectors at regional scale are fundamental to the formulation of relevant management strategy and inspection of the implementation efficiency. This study investigated the emission profile of halocarbons used in the mobile vehicle air conditioning system, the leading sector of refrigeration industry in terms of the refrigerant bank, market and emission, in the Hong Kong Special Administrative Region, using a bottom-up approach developed by 2006 IPCC Good Practice Guidance . The results showed that emissions of CFC-12 peaked at 53 tons ODP (Ozone Depletion Potential) in 1992 and then gradually diminished, whereas HFC-134a presented an increasing emission trend since 1990s and the emissions of HFC-134a reached 65,000 tons CO 2 -equivelant (CO 2 -eq) by the end of 2011. Uncertainty analysis revealed relatively high levels of uncertainties for special-purpose vehicles and government vehicles. Moreover, greenhouse gas (GHG) abatements under different scenarios indicated that potential emission reduction of HFC-134a ranged from 4.1 to 8.4 × 10 5 tons CO 2 -eq. The findings in this study advance our knowledge of halocarbon emissions from mobile vehicle air conditioning system in Hong Kong.
- Published
- 2014
22. Rhizoctonia solani Identified as the Disease Causing Agent of Peanut Leaf Rot in China
- Author
-
S. C. Xia, H. H. Yan, R. Q. Zhang, Y. C. Chi, and H. F. Du
- Subjects
Rhizoctonia solani ,biology ,Agronomy ,food and beverages ,Plant Science ,biology.organism_classification ,China ,Agronomy and Crop Science ,Arachis hypogaea - Abstract
Peanut (Arachis hypogaea L.) is one of the most economically important oil crops in the world. Since the 1990s, the peanut industry has developed rapidly in China. However, because of the use of high-yield varieties and increased plant density, a peanut leaf rot disease occurred in Laixi Experimental Fields in Shandong Province, China in 2007. Leaves had nearly circular, brown lesions that enlarged quickly developing yellow-brown halos at the edges of the lesions. High relative humidity under field conditions led to complete necrosis of the leaves with cotton wool-like mycelia observed followed by the development of sclerotia on the leaf surface. Symptomatic plants were observed between 2007 and 2010, and symptomatic leaf tissue was collected from the Laixi Experimental Fields. An isolate (designated YF-1) from symptomatic peanut leaves was isolated and purified on potato dextrose agar (PDA) and water agar (WA) medium. On PDA, the colony appeared initially as colorless and grew to the diameter of a 9-cm petri dish within 3 days. As the mycelium aged, the colony color gradually became light brown, and sclerotia developed on the surface of the colony. YF-1 was identified as Rhizoctonia solani Kühn based on the number of nuclei per cell ranging from 4 to 13 (average 6.1), hyphal diameter being 7.5 to 12.9 μm (average 8.3 μm), branching at right angles, a septum was present near each hyphal branch with a slight constriction, and no clamp connection structures or conidia were ever observed (4). To further confirm the identity of isolate YF-1, genomic DNA was extracted using the DNeasy Plant Mini DNA Extraction Kit (Shanghai Leifeng Biotechnol. Co., Ltd.), and the complete internal transcribed spacer (ITS) region of ribosomal DNA was amplified and sequenced with a pair of primers ITS1/ITS4 (2). A GenBank BLAST search produced an exact match for the sequences of R. solani (AY154301), with 100% sequence similarity. To estimate the mode of anastomosis, YF-1 was paired on WA medium with each reference strain belonging to anastomosis groups (AGs) 1 through 8 (provided by Shandong Agriculture University) (1,3). The results indicated that YF-1 belonged to group AG-1, subgroup AG-1-IA of R. solani. Pathogenicity tests were conducted by inoculating 10 peanut leaves using a colonized paper disc method (filter paper 1 cm in diameter suspended in the mycelia suspension). Ten control leaves received paper discs without mycelium. Inoculated and non-inoculated plants were kept in humid chambers for 24 h at 25°C. Three days after inoculation, the leaves developed typical brown lesions that were similar to those of naturally diseased plants. Koch's postulates were fulfilled by reisolation of R. solani from symptomatic leaves. No symptoms were observed on control leaves. To our knowledge, this is the first report of peanut leaf rot caused by R. solani. Occurrence of the disease in China is a new threat to the health of peanut. References: (1) Y. X. Chen et al. Acta Phytopathol. Sin. 3:139, 1985. (2) T. Misawa and S. Kuninaga. J. Gen. Plant Pathol. 76:310, 2010. (3) A. Ogoshi. Ann. Phytopathol. Soc. Jpn. 38:117, 1972. (4) J. R. Jr. Pameter and H. S. Whitmey. UC Press. 135, 1970.
- Published
- 2013
23. Atomic-scale bonding of bulk metallic glass to crystalline aluminum
- Author
-
H. H. Yan, Xianshun Wei, Jun Wang, Yongjiang Huang, Weidong Liu, X. J. Li, Jun Shen, and Kaixin Liu
- Subjects
Amorphous metal ,Materials science ,Physics and Astronomy (miscellaneous) ,Metallurgy ,chemistry.chemical_element ,Crystal growth ,Welding ,Nanoindentation ,law.invention ,Amorphous solid ,Explosion welding ,chemistry ,law ,Aluminium ,Crystallization - Abstract
A Ti40Zr25Cu12Ni3Be20 bulk metallic glass (BMG) was welded to a crystalline aluminum by the parallel plate explosive welding method. Experimental evidence and numerical simulation show that atomic-scale bonding between the BMG and the crystalline aluminum can be achieved, and the weldment on the BMG side can retain its amorphous state without any indication of crystallization in the welding process. Nanoindentation tests reveal that the interface of the explosive joints exhibits a significant increase in hardness compared to the matrix on its two sides. The joining of BMG and crystalline materials opens a window to the applications of BMGs in engineering.
- Published
- 2008
24. A Real-Time Line Reclosing Analysis Technique Analysis Using Distribution Factors
- Author
-
J. D. Willson and H. H. Yan
- Subjects
Power transmission ,Engineering ,Computer program ,business.industry ,General Engineering ,Energy Engineering and Power Technology ,System monitoring ,Reliability engineering ,Electric power system ,Electric power transmission ,Electronic engineering ,Algorithm design ,Power-flow study ,Electrical and Electronic Engineering ,business ,Power system simulator for engineering - Abstract
This paper describes a recently developed real-time computer program at the control center of the Pennsylvania-New Jersey-Maryland Inter- connection (PJM) designed to determine the impact of returning a transmission facility to service. The method is unique in that it incorporates the use of only megawatt flows and distribution factors. The paper discusses the solution algorithm and the applicability of its use in present and future system monitoring analyses.
- Published
- 1980
25. Problems in Coping with the Proliferation of Interchange Schedules
- Author
-
T. R. Woodward, H. H. Yan, R. E. Cottom, R. P. Schulte, F. J. Meyer, J. V. Barker, and M. P. McReynolds
- Subjects
Electric utility ,Engineering ,Electric power system ,Job shop scheduling ,Operations research ,business.industry ,Energy management ,Energy Engineering and Power Technology ,Processor scheduling ,Electrical and Electronic Engineering ,Electric power industry ,business ,Scheduling (computing) - Abstract
This paper is one of a series presented on behalf of the System Operations Subcommittee with the intent of focusing industry attention on current problems faced by electric utility operators. This paper contains four "short note reports" from authors in different areas of the electric power industry. The issues of evaluation, scheduling, control, and accounting are addressed.
- Published
- 1987
26. [Atrial fibrillation as initial manifestation in one patient with Fabry disease receiving amiodarone].
- Author
-
Chen SJ, Yan H, and Yu ZH
- Subjects
- Humans, Male, Middle Aged, Fabry Disease drug therapy, Atrial Fibrillation drug therapy, Amiodarone therapeutic use, Amiodarone adverse effects
- Published
- 2024
- Full Text
- View/download PDF
27. Risk factors for infection in patients undergoing shoulder arthroscopy: a systematic review and meta-analysis.
- Author
-
Lei Y, Zeng Y, Xia W, Xie J, Hu C, Lan Z, Ma D, Cai Y, He L, Kong D, Huang X, Yan H, Chen H, Li Z, and Wang X
- Subjects
- Humans, Risk Factors, Shoulder surgery, Male, Female, Surgical Wound Infection epidemiology, Surgical Wound Infection etiology, Middle Aged, Adult, Arthroscopy adverse effects
- Abstract
We conducted a meta-analysis to determine the risk of infection following shoulder arthroscopy and to identify risk factors for infection. We systematically searched the PubMed/Medline, Embase and Cochrane Library databases, as well as the reference lists of previous systematic reviews and meta-analyses; manual searches were also performed. A random-effects model was employed to estimate pooled odds ratios (ORs), based on sample size, the P-value of Egger's test and heterogeneity among studies. Of the 29,342 articles screened, 16 retrospective studies comprising 74,759 patients were included. High-quality evidence showed that patients with diabetes (OR, 1.30; 95% confidence interval (CI), 1.20-1.41) or hypertension (OR, 1.26; 95% CI, 1.10-1.44) had a higher risk of infection, while moderate quality evidence showed that patients with obesity (body mass index ≥30 kg/m
2 ) (OR, 1.42; 95% CI, 1.28-1.57), those who were male (OR, 1.65; 95% CI, 1.12-2.44), those who had an American Society of Anesthesiologists (ASA) class ≥3 (OR, 2.02; 95% CI, 1.02-3.99) and those who had a history of smoking (OR, 2.44; 95% CI, 1.39-4.28) had a higher risk of infection. The meta-analysis revealed that there was no association between age, time of surgery, or alcohol consumption and infection. This meta-analysis identified six significant risk factors for infection following shoulder arthroscopy including diabetes, obesity, hypertension, male sex, ASA class, history of smoking. These patient-related risk factors may help identify postoperative patients at higher risk for infection following shoulder arthroscopy., (Published by Elsevier Ltd.)- Published
- 2024
- Full Text
- View/download PDF
28. [Association between diabetes prevalence and mortality risk in the elderly aged 60 years and above in Liaoning Province, 2017-2019].
- Author
-
Tian YM, Jing L, Yan H, Zhang BQ, Jiang HQ, Li S, Song JB, Liu S, and Xing LY
- Subjects
- Humans, Aged, Prevalence, Middle Aged, China epidemiology, Male, Female, Risk Factors, Blood Glucose analysis, Hypertension epidemiology, Aged, 80 and over, Dyslipidemias epidemiology, Obesity epidemiology, Obesity complications, Cardiovascular Diseases mortality, Cardiovascular Diseases epidemiology, Diabetes Mellitus epidemiology, Proportional Hazards Models
- Abstract
Objective: To investigate the prevalence of diabetes in the elderly aged ≥60 years in Liaoning Province from 2017 to 2019 and analyze the impact of blood glucose control on all-cause mortality and cardiovascular disease (CVD) mortality. Methods: A survey was conducted in the elderly aged ≥60 years in Liaoning from 2017 to 2019 to collect the information about the prevalence of diabetes and other chronic diseases in the diabetes patients. The mortality of the enrolled subjects was investigated in September 2023. Cox proportional hazards regression models were used to estimate the association between blood glucose control in the elderly with diabetes and the risks of all-cause mortality and CVD mortality. Results: The crude prevalence of diabetes in the elderly aged ≥60 years was 20.2% (2 014/9 958) in Liaoning from 2017 to 2019, and the standardized prevalence rate was 19.9%. The prevalence rates of hypertension, dyslipidemia, and overweight/obesity in the diabetes patients were 77.0%, 51.7%, and 67.5% respectively. The median follow-up time was 5.5 years, and the all-cause mortality and CVD mortality rates in the diabetes patients were 244.3/10 000 person-years and 142.9/10 000 person-years, respectively. The results of the Cox proportional hazards regression model analysis showed that compared with non-diabetic individuals, diabetes patients had an increased risk of all-cause mortality by 1.68 times [hazard ratio ( HR )=1.68, 95% CI : 1.44-1.94] and an increased risk of CVD mortality by 1.56 times ( HR =1.56, 95% CI : 1.29-1.89). The differences in risks of all-cause mortality and CVD mortality between the diabetes patients with normal fasting blood glucose and glycated hemoglobin levels and people without diabetes were not significant (all P >0.05). The failure to meet either the FPG or HbA1c target increased the risk of all-cause mortality (all P <0.05). For individuals who failed to meet the HbA1c target, there was an increased risk of CVD mortality (all P <0.05). Conclusions: The comorbidity rate of chronic diseases was higher in the elderly with diabetes than in the elderly without diabetes in Liaoning. Elderly diabetes patients can benefit from good blood glucose control.
- Published
- 2024
- Full Text
- View/download PDF
29. [Epidemiological characteristics and diagnosis of imported Plasmodium malariae and Plasmodium ovale malaria cases in five provinces of China from 2014 to 2021].
- Author
-
Lin W, Wang D, Sun L, Zhang T, Yan H, Ruan W, Liu Y, Wu D, Li S, Xia J, and Zhu H
- Subjects
- China epidemiology, Humans, Male, Female, Adult, Communicable Diseases, Imported epidemiology, Communicable Diseases, Imported parasitology, Communicable Diseases, Imported diagnosis, Middle Aged, Malaria epidemiology, Malaria diagnosis, Plasmodium malariae isolation & purification, Plasmodium malariae physiology, Plasmodium ovale isolation & purification, Plasmodium ovale physiology
- Abstract
Objective: To investigate the epidemiological characteristics and diagnosis of imported Plasmodium malariae and P. ovale malaria cases in Anhui Province, Hubei Province, Zhejiang Province, Guangxi Zhuang Autonomous Region and Henan Province from 2014 to 2021, so as to provide insights into malaria control in these five provinces., Methods: All data pertaining to malaria cases reported in five provinces of China were captured from Chinese Disease Control and Prevention Information System from 2014 to 2021, and the epidemiological characteristics of imported P. malariae and P. ovale malaria cases were analysed using a descriptive epidemiological method. The duration from onset of malaria to initial diagnosis, duration from initial diagnosis to definitive diagnosis, institutions of initial and definitive diagnoses, and proportion of correct malaria diagnosis at initial diagnosis were statistically analyzed., Results: A total of 1 223 imported P. malariae and P. ovale malaria cases were reported in Anhui Province, Hubei Province, Zhejiang Province, Henan Province and Guangxi Zhuang Autonomous Region from 2014 to 2021, there were 158 P. malariae malaria cases (12.92%) and 1 065 P. ovale malaria cases (87.08%). Totally 98.53% (1 205/1 223) of the imported malaria cases were from Africa, with Angola (18.99%, 30/158), Nigeria (11.39%,18/158), Cameroon (10.76%, 17/158), Ghana (10.13%, 16/158) and the Democratic Republic of the Congo (10.13%,16/158) as predominant countries where P. malariae malaria cases were from, and Ghana (23.19%, 247/1 065), Cameroon (14.74%, 157/1 065), Nigeria (9.39%, 100/1 065) and Angola (6.95%, 74/1 065) as predominant countries where P. ovale malaria cases were from. There were significant differences in the duration from onset of malaria to initial diagnosis (χ
2 = 27.673, P = 0.000) and duration from initial diagnosis to definitive diagnosis of P. malariae and P. ovale malaria cases (χ2 = 29.808, P = 0.000), and the proportions of correct initial diagnosis of P. malariae and P. ovale malaria cases were 38.61% (61/158) and 56.53% (602/1 065). There were 74.69% (118/158) of P. malariae malaria cases with definitive diagnosis in county-, city-, and province-level medical institutions, and 79.25% (844/1 065) of P. ovale malaria cases with definitive diagnosis in county- and city-level medical institutions and county-level centers for disease control and prevention., Conclusions: The imported P. malariae and P. ovale malaria cases in Anhui Province, Hubei Province, Zhejiang Province, Henan Province and Guangxi Zhuang Autonomous Region from 2014 to 2021 were mainly returned from Africa and the proportion of correct diagnosis of P. malariae and P. ovale malaria was low at initial diagnosis. Persistent improvements in the diagnostic capability of malaria are required in medical institutions.- Published
- 2024
- Full Text
- View/download PDF
30. [Transdermal patches containing Cassia seed extract applied at the navel for slow transit constipation in rats: therapeutic effect and analysis of the spectrum-effect relationship].
- Author
-
Huang L, Cheng S, Liu Z, Zou C, and Yan H
- Subjects
- Animals, Rats, Rats, Sprague-Dawley, Colon drug effects, Acupuncture Points, Nitric Oxide metabolism, Disease Models, Animal, Male, Drugs, Chinese Herbal therapeutic use, Cassia chemistry, Constipation drug therapy, Seeds chemistry, Transdermal Patch, Plant Extracts
- Abstract
Objective: To explore the therapeutic effect of transdermal patches containing Cassia seed extract applied at the navel on slow transit constipation (STC) in rats and explore the spectrum-effect relationship of the patches., Method: In a STC rat model established by gavage of compound diphenoxylate suspension for 14 days, the transdermal patches containing low, medium and high doses of Cassia seed extract (41.75, 125.25, and 375.75 mg/kg, respectively) were applied at the Shenque acupoint on the abdomen for 14 days after modeling, with constipation patches (13.33 mg/kg) as the positive control. After the treatment, fecal water content and intestinal propulsion rate of the rats were calculated, the pathological changes in the colon were observed with HE staining. Serum NO and NOS levels and the total protein content and NO, NOS and AChE expressions in the colon tissue were determined. HPLC fingerprints of the transdermal patches were established, and the spectrum-effect relationship between the common peaks of the patches and its therapeutic effect were analyzed., Results: Treatment with the transdermal patches containing Cassia seed extract significantly increased fecal water content and intestinal propulsion rate of the rat models, where no pathological changes in the colon tissue were detected. The treatment also suppressed the elevations of serum and colonic NO and NOS levels and reduction of AChE in STC rats. Twenty-eight common peaks were confirmed in the HPLC fingerprints of 6 batches of Cassia seed extract-containing patches. Analysis of the spectrum-effect relationship showed that autrantio-obtusin had the greatest contribution to the therapeutic effect of the patches in STC rats., Conclusion: The Cassia seed extract-containing patches alleviates STC in rats via synergistic actions of multiple active ingredients in the extract, where autrantio-obtusin, rhein, chrysoobtusin, obtusin, obtusifolin, emodin, chrysophanol, and physcion are identified as the main active ingredients.
- Published
- 2024
- Full Text
- View/download PDF
31. A Multicentric, Retrospective, Real-world Study on Immune-related Adverse Events in Patients with Advanced Non-small Cell Lung Cancers Treated with Pembrolizumab Monotherapy.
- Author
-
Lerner A, Lee AJX, Yan H, Van Griethuysen J, Bartlett AD, Veli M, Jiang Y, Luong M, Naban N, Kane C, Conibear J, Papadatos-Pastos D, Ahmad T, Chao D, Anand G, and Asghar US
- Subjects
- Female, Humans, Retrospective Studies, Nivolumab adverse effects, Carcinoma, Non-Small-Cell Lung pathology, Lung Neoplasms pathology, Antineoplastic Agents, Immunological adverse effects, Antibodies, Monoclonal, Humanized
- Abstract
Aims: We present 7 years of clinical experience with single-agent pembrolizumab immune checkpoint inhibitor immunotherapy in non-small cell lung cancers (NSCLC) from four UK cancer centres., Materials and Methods: This multi-institutional retrospective cohort study included 226 metastatic NSCLC patients. Outcomes were number and severity of immune-related adverse events (irAEs), median progression-free survival (mPFS) and median overall survival (mOS)., Results: Within our cohort, 119/226 (53%) patients developed irAEs. Of these, 54/119 (45%) experienced irAEs affecting two or more organ systems. The most common irAEs were diarrhoea and rash. The development of an irAE was associated with better mOS (20.7 versus 8.0 months; P < 0.001) and mPFS (12.0 versus 3.9 months; P < 0.001). The development of grade 3/4 toxicities was associated with worse outcomes compared with the development of grade 1/2 toxicities (mOS 6.1 months versus 25.2 months, P < 0.01; mPFS 5.6 months versus 19.3 months, P = 0.01, respectively). Females had a higher proportion of reported grade 3/4 toxicities (13/44 [29.5%] versus 10/74 [13.5%], P = 0.03). Using a multiple Cox regression model, the presence of irAEs was associated with a better overall survival (hazard ratio = 0.42, 95% confidence interval 0.29-0.61; P < 0.01) and better PFS (hazard ratio 0.38, 95% confidence interval 0.27-0.53; P < 0.001)., Conclusion: In this multicentre retrospective cohort study, the development of at least one irAE was associated with significantly longer mPFS and mOS; however, more severe grade 3 and 4 irAEs were associated with worse outcomes. Delayed-onset irAEs, after the 3-month timepoint, were associated with better clinical outcomes., (Copyright © 2024. Published by Elsevier Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
32. [Comparison of efficacy and safety between domestic immune checkpoint inhibitors and pembrolizumab in the treatment of driver gene-negative advanced non-small cell lung cancer].
- Author
-
Chen YQ, Zhang YD, Yan H, Qin HY, Huang Z, Zhang X, Xiang SQ, Hu XQ, Wu F, Zhang YC, Zeng L, and Yang N
- Subjects
- Female, Male, Humans, Middle Aged, Adolescent, Young Adult, Adult, Aged, Aged, 80 and over, Immune Checkpoint Inhibitors therapeutic use, Retrospective Studies, Carcinoma, Non-Small-Cell Lung drug therapy, Lung Neoplasms drug therapy, Antibodies, Monoclonal, Humanized
- Abstract
Objective: To compare the efficacy and safety of domestic immune checkpoint inhibitors and pembrolizumab in the treatment of driver gene-negative advanced non-small cell lung cancer. Methods: A retrospective analysis was conducted on the data of 1 241 patients with driver gene-negative, unresectable stage ⅢB to Ⅳ non-small cell lung cancer who were treated at the Hunan Cancer Hospital from January 1, 2017 to October 1, 2022. All patients received monotherapy or combination therapy with domestic immune checkpoint inhibitors or pembrolizumab. Among the 1 241 patients, there were 1 066 males and 175 females, with an age range of 14 to 84 years and a median age of 62 years. Among them, 67 patients received monotherapy with domestic immune checkpoint inhibitors, 695 patients received combination therapy with domestic immune checkpoint inhibitors, 102 patients received monotherapy with pembrolizumab, and 377 patients received combination therapy with pembrolizumab. The efficacy and safety of domestic immune checkpoint inhibitors and pembrolizumab monotherapy or combination therapy were compared. Results: In the immune checkpoint inhibitor monotherapy group, the objective response rate (ORR) using domestic immune checkpoint inhibitors and pembrolizumab was 43.3%(29/67) and 44.1%(45/102), respectively, and the disease control rate (DCR) was 79.1%(53/67) and 84.3%(86/102), respectively, with no statistically significant differences (both P >0.05). In the immune combination therapy group, the ORR using domestic immune checkpoint inhibitors and pembrolizumab was 60.9%(423/695) and 62.9%(237/377), respectively, and the DCR was 92.9%(646/695) and 91.0%(343/377), respectively, with no statistically significant differences (both P >0.05). In the immune checkpoint inhibitor monotherapy group, the median progression-free survival (PFS) using domestic immune checkpoint inhibitors and pembrolizumab was 9.0 (95% CI : 3.0-15.0) months and 7.4 (95% CI : 4.8-9.8) months, respectively, with no statistically significant differences ( P =0.660). The median overall survival (OS) was 27.0 (95% CI : 25.0-29.0) months and 22.0 (95% CI : 17.1-26.9) months, respectively, with no statistically significant differences ( P =0.673). In the immune combination therapy group, the median PFS using domestic immune checkpoint inhibitors and pembrolizumab was 9.0 (95% CI : 8.2-9.8) months and 10.5 (95% CI : 9.0-12.0) months, respectively, with no statistically significant differences ( P =0.186). The median OS was 24.0 (95% CI : 19.1-28.9) months and 26.0 (95% CI : 21.3-30.7) months, respectively, with no statistically significant differences ( P =0.359). The incidence of grade 1-2 reactive capillary proliferation of the skin in the domestic immune checkpoint inhibitor group and pembrolizumab group was 14.0% (107/762) and 0, respectively. The incidence of grade≥3 reactive capillary proliferation of the skin was 1.0% (7/762) and 0, respectively, with statistically significant differences (both P <0.05). No statistically significant differences were observed in other adverse reactions (all P >0.05). Conclusions: The efficacy of domestically produced immune checkpoint inhibitors is comparable to that of pembrolizumab in the treatment of driver gene-negative advanced non-small cell lung cancer. There is little difference in safety, except for the specific difference in domestically produced immune checkpoint inhibitor, which has a unique risk of reactive cutaneous capillary endothelial proliferation.
- Published
- 2024
- Full Text
- View/download PDF
33. [Construction of natural population cohort on telephone follow-up management quality control system and discussion regarding critical issues by REDCap system].
- Author
-
Huo YT, Liu JC, Cao SX, Wang YT, Liu HM, Zhang BY, Yang PY, Huang Q, Wang MC, Yang CL, Zeng LX, Dang SN, Yan H, and Mi BB
- Subjects
- Humans, Follow-Up Studies, Surveys and Questionnaires, Cohort Studies, Quality Control, Telephone
- Abstract
With completing a baseline survey of a large natural population cohort, conducting regular follow-up has become a key factor in further improving the quality of cohort construction and ensuring its sustainable development. Typical cohort follow-up methods include repeat surveys, routine monitoring, and community-oriented surveillance. However, in practical applications, there are often issues such as high costs, difficulty, and high error rates. Telephone follow-up is an important supplementary method to the methods mentioned above, as it has the characteristics of low cost, fast response, and high quality. However, the with difficult organization, quality control is challenging, response rates are low, and management levels vary widely, which limits its widespread use in large-scale population cohort studies. Given the above problems, this study draws on customer relationship management based on the actual needs of the China Northwest Cohort follow-up. It relies on the REDCap electronic data collection platform to build a telephone follow-up management and quality control system. Targeted solutions are provided for key issues in telephone follow-up implementation, including organizational structure, project management, data collection, and process quality control, to improve the quality control level of telephone follow-up comprehensively and thereby enhance the quality and efficiency of follow-up. We hope to provide standardized follow-up programs and efficient quality control tools for newly established and existing cohort studies.
- Published
- 2023
- Full Text
- View/download PDF
34. [Treatment response of a two-dose regimen of dose-adjusted inotuzumab ozogamicin in relapsed/refractory B-cell acute lymphoblastic leukemia].
- Author
-
An LL, Zhao DF, Hou RF, Guan HH, Yan H, Lin YH, Tong CR, Wu T, and Liu SY
- Subjects
- Adult, Humans, Child, Adolescent, Inotuzumab Ozogamicin, Antibodies, Monoclonal, Adaptor Proteins, Signal Transducing, Antigens, CD19, Receptors, Chimeric Antigen, Precursor Cell Lymphoblastic Leukemia-Lymphoma therapy, Chemical and Drug Induced Liver Injury
- Abstract
Objective: To observe the treatment response of a two-dose regimen of inotuzumab ozogamicin (inotuzumab), a monoclonal antibody targeting CD22, for patients with heavily treated relapsed/refractory B-cell acute lymphoblastic leukemia (R/R B-ALL), including those failed or relapsed after chimeric antigen receptor (CAR) -T-cell therapy. Methods: Pediatric and adult patients who received two doses of inotuzumab and who were evaluated after inotuzumab treatment were included. Antibody infusions were performed between March 2020 and September 2022. All patients expressed CD22 antigen as detected by flow cytometry (>80% leukemic cells displaying CD22) before treatment. For adults, the maximum dosage per administration was 1 mg (with a total of two administrations). For children, the maximum dosage per administration was 0.85 mg/m(2) (no more than 1 mg/dose; total of two administrations). The total dosage administered to each patient was less than the standard dosage of 1.8 mg/m(2). Results: Twenty-one patients with R/R B-ALL were included, including five children (<18 years old) and sixteen adults. Seventeen patients presented with 5.0% -99.0% leukemic blasts in the bone marrow/peripheral blood or with extramedullary disease, and four patients were minimal residual disease (MRD) -positive. Fourteen patients underwent both CD19 and CD22 CAR-T-cell therapy, four underwent CD19 CAR-T-cell therapy, and three underwent blinatumomab therapy. Eleven patients underwent allogeneic hematopoietic stem cell transplantation (allo-HSCT). After inotuzumab treatment, 14 of 21 patients (66.7% ) achieved a complete response (CR, one was MRD-positive CR), and all four MRD-positive patients turned MRD-negative. Four of six patients who failed recent CD22 CAR-T-cell therapy achieved a CR after subsequent inotuzumab treatment. Seven patients (33.3% ) demonstrated no response. Grade 1-3 hepatotoxicity occurred in five patients (23.8% ), one child with no response experienced hepatic veno-occlusive disease (HVOD) during salvage transplantation and recovered completely. Conclusion: For patients with heavily treated R/R B-ALL, including those who had undergone allo-HSCT and CD19/CD22 CAR-T-cell therapy, the two-dose regimen of inotuzumab resulted in a CR rate of 66.7%, and the frequency of hepatotoxicity and HVOD was low.
- Published
- 2023
- Full Text
- View/download PDF
35. [Impact of COVID-19 pandemic on the management of imported malaria in China].
- Author
-
Liu Y, Wang D, He Z, Zhang T, Yan H, Lin W, Zhang X, Lu S, Liu Y, Wang D, Li J, Ruan W, Li S, and Zhang H
- Subjects
- Humans, Pandemics, China epidemiology, Incidence, COVID-19 epidemiology, Malaria epidemiology, Malaria prevention & control, Malaria, Falciparum epidemiology
- Abstract
Objective: To examine the impact of COVID-19 pandemic on the epidemic status of imported malaria and national malaria control program in China, so as to provide insights into post-elimination malaria surveillance., Methods: All data pertaining to imported malaria cases were collected from Anhui Province, Hubei Province, Henan Province, Zhejiang Province and Guangxi Zhuang Autonomous Region during the period from January 1, 2018 through December 31, 2021. The number of malaria cases, species of malaria parasites, country where malaria parasite were infected, diagnosis and treatment after returning to China, and response were compared before (from January 1, 2018 to January 22, 2020) and after the COVID-19 pandemic (from January 23, 2020 to December 31, 2021)., Results: A total of 2 054 imported malaria cases were reported in Anhui Province, Hubei Province, Henan Province, Zhejiang Province and Guangxi Zhuang Autonomous Region during the period from January 1, 2018 to December 31, 2021, and there were 1 722 cases and 332 cases reported before and after the COVID-19 pandemic, respectively. All cases were reported within one day after definitive diagnosis. The annual mean number of reported malaria cases reduced by 79.30% in Anhui Province, Hubei Province, Henan Province, Zhejiang Province and Guangxi Zhuang Autonomous Region after the COVID-19 pandemic (171 cases) than before the pandemic (826 cases), and the number of monthly reported malaria cases significantly reduced in Anhui Province, Hubei Province, Henan Province, Zhejiang Province and Guangxi Zhuang Autonomous Region since February 2020. There was a significant difference in the constituent ratio of species of malaria parasites among the imported malaria cases in Anhui Province, Hubei Province, Henan Province, Zhejiang Province and Guangxi Zhuang Autonomous Region before and after the COVID-19 pandemic ( χ
2 = 146.70, P < 0.05), and P. falciparum malaria was predominant before the COVID-19 pandemic (72.30%), while P. ovale malaria (44.28%) was predominant after the COVID-19 pandemic, followed by P. falciparum malaria (37.65%). There was a significant difference in the constituent ratio of country where malaria parasites were infected among imported malaria cases in Anhui Province, Hubei Province, Henan Province, Zhejiang Province and Guangxi Zhuang Autonomous Region before and after the COVID-19 pandemic ( χ2 = 13.83, P < 0.05), and the proportion of malaria cases that acquired Plasmodium infections in western Africa reduced after the COVID-19 pandemic that before the pandemic (44.13% vs. 37.95%; χ2 = 4.34, P < 0.05), while the proportion of malaria cases that acquired Plasmodium infections in eastern Africa increased after the COVID-19 pandemic that before the pandemic (9.58% vs. 15.36%; χ2 = 9.88, P = 0.02). The proportion of completing case investigation within 3 days was significantly lower after the COVID-19 pandemic than before the pandemic (96.69% vs. 98.32%; χ2 = 3.87, P < 0.05), while the proportion of finishing foci investigation and response within 7 days was significantly higher after the COVID-19 pandemic than before the pandemic (100.00% vs. 98.43%; χ2 = 3.95, P < 0.05)., Conclusions: The number of imported malaria cases remarkably reduced in Anhui Province, Hubei Province, Henan Province, Zhejiang Province and Guangxi Zhuang Autonomous Region of China during the COVID-19 pandemic, with a decreased proportion of completing case investigations within 3 days. The sensitivity of the malaria surveillance-response system requires to be improved to prevent the risk of secondary transmission of malaria due to the sharp increase in the number of imported malaria cases following the change of the COVID-19 containment policy.- Published
- 2023
- Full Text
- View/download PDF
36. New Limits on Exotic Spin-Dependent Interactions at Astronomical Distances.
- Author
-
Wu LY, Zhang KY, Peng M, Gong J, and Yan H
- Abstract
Exotic spin-dependent interactions involving new light particles address key questions in modern physics. Interactions between polarized neutrons (n) and unpolarized nucleons (N) occur in three forms: g_{S}^{N}g_{P}^{n}σ·r, g_{V}^{N}g_{A}^{n}σ·v, and g_{A}^{N}g_{A}^{n}σ·v×r, where σ is the spin and g's are the corresponding coupling constants for scalar, pseudoscalar, vector, and axial-vector vertexes. If such interactions exist, the Sun and Moon could induce sidereal variations of effective fields in laboratories. By analyzing existing data from laboratory measurements on Lorentz and CPT violation, we derive new experimental upper limits on these exotic spin-dependent interactions at astronomical ranges. Our limits on g_{S}^{N}g_{P}^{n} surpass the previous combined astrophysical-laboratory limits, setting the most stringent experimental constraints to date. We also report new constraints on vector-axial-vector and axial-axial-vector interactions at astronomical scales, with vector-axial-vector limits improved by ∼12 orders of magnitude. We extend our analysis to Hari Dass interactions and obtain new constraints.
- Published
- 2023
- Full Text
- View/download PDF
37. [Research progress of ocular organoids].
- Author
-
Li MX, Zhang HK, and Yan H
- Subjects
- Humans, Retina, Cornea, Face, Organoids, Eye Diseases
- Abstract
The development of ocular organoids, which closely mimic the tissue structure and functionality of the human eye, has emerged as a prominent area of research in the field of ophthalmology. These organoids serve as valuable models for investigating the mechanisms and interventions of eye-related diseases. However, the establishment of in vitro models that accurately represent the tissue structure and functionality of the human eye has long been a challenge in ophthalmic research. Numerous efforts have been made to enhance the fidelity of ocular organoid models, aiming to improve their suitability for studying disease pathogenesis and drug efficacy. With advancements in technology, it has become possible to construct individual components of the eye, such as the cornea and retina, in vitro. This review summarizes the recent advancements in ocular organoid research, with a focus on corneal and retinal organoids.
- Published
- 2023
- Full Text
- View/download PDF
38. [Association between muscle mass and quality of life in Shaanxi adults].
- Author
-
Wang ZP, Jing H, Teng YX, Huang Y, Chacha CHACHA, Liu YZ, Zhang BY, Shen Y, Li Q, Mi BB, Yang JM, Yan H, and Dang SN
- Subjects
- Humans, Female, Adult, Male, Cohort Studies, China, Muscles, Quality of Life, Adipose Tissue
- Abstract
Objective: To investigate the association between muscle mass and quality of life in adults in Shaanxi adults. Methods: The data in this analysis were part of the baseline survey of the Regional Ethnic Cohort Study in Northwest China from June 2018 to May 2019 in Shaanxi Province. The participants' quality of life, including physical component summary (PCS) and mental component summary (MCS), was assessed by the 12-Item Short Form Survey, and the Body Fat Determination System measured muscle mass. A logistic regression model with adjustment for confounding factors was established to analyze the association between muscle mass and quality of life in different genders. Further, sensitivity and subgroup analyses were conducted to explore its stability. Finally, a restricted cubic spline was employed to investigate the dose-response relationship between muscle mass and quality of life in different genders. Results: A total of 20 595 participants were included, with an average age of 55.0, and 33.4% were male. After controlling for potential confounders, compared with the Q
1 group, the risk of low PCS was reduced by 20.6% ( OR =0.794, 95% CI : 0.681-0.925) and the risk of low MCS was lower reduced by 20.1% ( OR =0.799, 95% CI : 0.689-0.926) in female Q5 groups. Compared with the Q1 group, the risk of low PCS was reduced by 24.4% ( OR =0.756, 95% CI : 0.644-0.888) in the male Q2 group. However, no significant association between muscle mass and MCS in males has been found. In females, restricted cubic spline analysis showed a significant linear dose-response relationship between muscle mass and PCS and MCS. Conclusions: There is a positive association between muscle mass and quality of life in Shaanxi adults, especially females. With the increase in muscle mass, the physical and mental functions of the population continue to improve.- Published
- 2023
- Full Text
- View/download PDF
39. Splitting phonons: Building a platform for linear mechanical quantum computing.
- Author
-
Qiao H, Dumur É, Andersson G, Yan H, Chou MH, Grebel J, Conner CR, Joshi YJ, Miller JM, Povey RG, Wu X, and Cleland AN
- Abstract
Linear optical quantum computing provides a desirable approach to quantum computing, with only a short list of required computational elements. The similarity between photons and phonons points to the interesting potential for linear mechanical quantum computing using phonons in place of photons. Although single-phonon sources and detectors have been demonstrated, a phononic beam splitter element remains an outstanding requirement. Here we demonstrate such an element, using two superconducting qubits to fully characterize a beam splitter with single phonons. We further use the beam splitter to demonstrate two-phonon interference, a requirement for two-qubit gates in linear computing. This advances a new solid-state system for implementing linear quantum computing, further providing straightforward conversion between itinerant phonons and superconducting qubits.
- Published
- 2023
- Full Text
- View/download PDF
40. [Spectrum-effect relationship of total anthraquinone extract of Cassia seeds against fluorouracil-induced liver injury in mice].
- Author
-
Wang H, Li M, Li S, Shi J, Huang L, Cheng S, Zou C, and Yan H
- Subjects
- Animals, Mice, Anthraquinones, Antioxidants, Fluorouracil adverse effects, Plant Extracts pharmacology, Emodin, Cassia, Chemical and Drug Induced Liver Injury, Chronic
- Abstract
Objective: To investigate the spectrum-effect relationship between the total anthraquinone extract of Cassia seeds and fluorouracil (5-Fu)-induced liver injury in mice and identify the effective components in the extract., Methods: A mouse model of liver injury was established by intraperitoneal injection of 5-Fu, with bifendate as the positive control. The serum levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) and myeloperoxidase (MPO), superoxide dismutase (SOD) and total antioxidant capacity (T-AOC) in the liver tissue were detected to investigate the effect of the total anthraquinone extract of Cassia seeds (0.4, 0.8 and 1.6 g/kg) on liver injury induced by 5-Fu. HPLC fingerprints of 10 batches of the total anthraquinone extracts were established to analyze the spectrum- effectiveness of the extract against 5- Fu- induced liver injury in mice and screen the effective components using the grey correlation method., Results: The 5- Fu- treated mice showed significant differences in liver function parameters from the normal control mice ( P < 0.05), suggesting successful modelling. Compared with those in the model group, serum ALT and AST activities were decreased, SOD and T- AOC activities significantly increased, and MPO level was significantly lowered in the mice treated with the total anthraquinone extract (all P < 0.05). HPLC fingerprints of the 31 components in the total anthraquinone extract of Cassia seeds showed good correlations with the potency index of 5-Fu-induced liver injury but with varying correlation strengths. The top 15 components with known correlations included aurantio-obtusina (peak 6), rhein (peak 11), emodin (peak 22), chrysophanol (peak 29) and physcion (peak 30)., Conclusion: The effective components in the total anthraquinone extract of Cassia seeds , including aurantio-obtusina, rhein, emodin, chrysophanol, and physcion, are coordinated to produce protective effects against 5-Fu-induced liver injury in mice.
- Published
- 2023
- Full Text
- View/download PDF
41. [New research advances in hypertrophic scar formation, prevention and treatment].
- Author
-
Chen L, Yan H, Zhou B, Xu YF, and Li J
- Subjects
- Humans, Collagen metabolism, Collagen therapeutic use, Fibroblasts, Signal Transduction, Extracellular Matrix metabolism, Cicatrix, Hypertrophic prevention & control, Cicatrix, Hypertrophic drug therapy, Cicatrix, Hypertrophic metabolism
- Abstract
Scarring, naturally induced by fibroblasts(Fb) during wound healing, is an essential process in response to repair damaged tissue. Excessive Fb proliferation which produces the excessive collagen deposition, including increased extracellular matrix synthesis or insufficient decomposition, typically contributes to hypertrophic scar(HS) formation. Although exact mechanisms of HS are not yet fully understood, it is generally believed that dysfunction of Fb and regulation of signal pathways play an important role in HS formation. Biologically, Fb function is affected by various factors such as cytokines, extracellular matrix and itself. In addition, modifications of miRNA, ceRNA, lncRNA, peptides and histones participate in HS formation by affecting the biological function of Fb. Despite the clinical importance, very few therapeutic modalities are available to prevent HS. To achieve this, a deeper characterization of Fb is required to identify mechanisms of HS. To the aspect of HS prevention and treatment, we review recent findings, concentrating on Fb function and collagen secretion. The objective of this article is to frame the current understanding, gain the deeper insights into Fb function, and provide the more comprehensive cognition and perspective for prevention and treatment of HS.
- Published
- 2023
- Full Text
- View/download PDF
42. [Research progress on signaling pathways related to drug research in proliferative vitreoretinopathy].
- Author
-
Han H, Yu JG, and Yan H
- Subjects
- Humans, Phosphatidylinositol 3-Kinases, Signal Transduction, Retina, Neurons, Vitreoretinopathy, Proliferative
- Abstract
Proliferative vitreoretinopathy (PVR) is an avascular fibroproliferative disease that occurs in the retina. The main pathological changes are the proliferation and traction of retinal pigment epithelial cells (RPE) and glial cells on the vitreous and retina. Basic research has confirmed that the formation of PVR is related to multiple signaling pathways, including NK-κB signaling pathway, MAPK and its downstream signaling pathways, JAK/STAT signaling pathway, PI3K/Akt signaling pathway, thrombin and its receptor pathway, TGF-β and downstream signaling pathway, North signaling pathway and Wnt/β-catenin signaling pathway, etc. This review summarizes the research progress of the main signaling pathways in the formation mechanism of PVR, and provides the basis and support for the research of PVR drug therapy.
- Published
- 2023
- Full Text
- View/download PDF
43. [Research progress of the effect of exercise on prevention of age-related macular degeneration].
- Author
-
Cui BH and Yan H
- Subjects
- Humans, China, Exercise, Macular Degeneration prevention & control
- Abstract
The number of people suffering from age-related macular degeneration (AMD) in China is increasing year by year, so it is particularly necessary to find a feasible approach to prevent AMD. Related studies have shown that the preventive effect of exercise on AMD may be associated with the change of factors affecting neovascularization, inhibiting systemic inflammatory response, reducing oxidative stress and affecting microvascular endothelial function. However, further basic research evidence is yet to be explored at present. This review summarizes and analyzes the effects of exercise on AMD and the above-mentioned potential mechanisms in order to improve the understanding of the correlation between physical exercise and AMD and to provide the basis for further basic and clinical studies.
- Published
- 2022
- Full Text
- View/download PDF
44. [Relationship between Chinese dietary guidelines compliance index for pregnant women and congenital heart disease in offspring].
- Author
-
Chang QQ, Dang SN, Yan H, Zeng LX, and Yang JM
- Subjects
- Pregnancy, Female, Humans, Case-Control Studies, East Asian People, Logistic Models, Risk Factors, Pregnant Women, Heart Defects, Congenital
- Abstract
Objective: To study the relationship between the Chinese dietary guidelines compliance index for pregnant women (CDGCI_PW) and congenital heart disease (CHD) in offspring. Methods: In a hospital-based case-control study conducted in Xi'an, Shaanxi province, semi-quantitative food frequency questionnaires were used to investigate the diets of pregnant women throughout pregnancy. The modified CDGCI_PW score was used to evaluate dietary quality during pregnancy, logistic regression was applied to analyze the relationship between CDGCI_PW score and offspring CHD, and the ROC curve was adopted to construct the prediction model of CDGCI_PW for offspring CHD. Results: A total of 1 422 subjects were enrolled, including 474 in the case group and 948 in the control group. The CDGCI_PW score in the case group M ( Q
1 , Q3 ) was 46.0 (26.0, 65.0) lower than that in the control group, which was 60.0 (40.0, 77.0). The difference between the two groups was significant ( P <0.001). Compared with those in the Q1 of CDGCI_PW, the offspring in the Q2 , Q3, and Q4 of CDGCI_PW had a lower risk of total CHD ( OR =0.60, 95% CI : 0.43-0.83; OR =0.64, 95% CI : 0.45-0.89; OR =0.29, 95% CI : 0.19-0.44), with the trend test P <0.001. The risk of total CHD was reduced by 17% ( OR =0.83, 95% CI : 0.79-0.88) when 10 points increased the CDGCI_PW score. The area under curve predicted by constructing the ROC curve was 0.793 (95% CI : 0.768-0.818), and at the maximum of the Youden index, the sensitivity was 0.740, and the specificity was 0.725. Conclusion: This study suggests that improving dietary quality during pregnancy may reduce the risk of CHD in offspring.- Published
- 2022
- Full Text
- View/download PDF
45. [Inter-laboratory comparison analysis of noise measurement in 91 occupational hygiene technical service organizations].
- Author
-
Xu GY, Lai MZ, Zhang DY, Yan H, Yan MS, and Xiao B
- Subjects
- Humans, Workplace, Organizations, Hygiene, Workforce, Occupational Health Services, Noise, Occupational
- Abstract
Objective: To understand the comparability of noise measurement results of various occupational hygiene technical service organizations in Guangdong Province by conducting inter-laboratory comparison of measuring instruments and personnel operation. Methods: In October 2020, the instrument comparison and personnel comparison among 91 occupational hygiene technical service organizations engaged in noise measurement in Guangdong Province were carried out in the form of fixed-point measurement and simulated workplace measurement, and the results were analyzed and evaluated by using the robust z -ratio score. Results: In the instrument comparison, 6 organizations had 1 or 2 outliers in their z -ratio scores, 2 organizations had 2 problematic values in their z -ratio scores, and a total of 8 organizations (accounting for 8.8%) were judged as unqualified; A total of 83 organizations (accounting for 91.2%) with satisfactory z -ratio scores or only one problematic value were judged as qualified. In the personnel comparison, there were 11 organizations with 1 or 2 outliers in the z -ratio score, and 1 organization with 2 problematic values in the z -ratio score. A total of 12 organizations (13.2%) were judged as unqualified and 79 organizations (accounting for 86.8%) with satisfactory z -ratio scores or only one problematic value were judged as qualified. Through comprehensive judgment, 20 organizations (22.0%) were judged as unqualified, and 71 organizations (78.0%) were judged as qualified. There was no statistically significant difference in the qualified rates of instrument comparison results, personnel comparison results and comprehensive evaluation results of non-private organizations and private organizations ( P >0.05). There was no significant difference in the qualified rates of instrument comparison results and comprehensive evaluation results of qualified organizations and unqualified organizations ( P >0.05), there was significant difference in the qualified rate of personnel comparison results ( P <0.05) . Conclusion: The noise measurement results of some occupational health technical service organizations in Guangdong Province are generally comparable. To carry out inter-laboratory comparison of noise instrument performance and personnel operation ability of occupational hygiene technical service organizations, can comprehensively evaluate the testing process of each organization and find out the problems existing in each organization.
- Published
- 2022
- Full Text
- View/download PDF
46. [Application of next-generation sequencing in the pathogenesis of uveal melanoma].
- Author
-
Yao XM and Yan H
- Subjects
- Adult, Humans, DNA Copy Number Variations, High-Throughput Nucleotide Sequencing, Mutation, Uveal Neoplasms genetics, Uveal Neoplasms pathology, Melanoma genetics, Melanoma pathology
- Abstract
Uveal melanoma, as the most common intraocular malignant tumor in adults, has poor overall survival after metastasis. In recent years, next-generation sequencing technology has been increaingly applied in studying the genetic characteristics of diseases. From the perspectives of genome, epigenome, and transcriptome, this review summed up the genomics mutation, epigenomics regulation mechanism, and immune transcriptomic profiling of uveal melanoma in the context of next-generation sequencing technologies, especially chromosome copy number variation, gene mutation and DNA methylation.
- Published
- 2022
- Full Text
- View/download PDF
47. [Application of isotemporal substitution model in epidemiological research].
- Author
-
Wang YT, Liu HM, Cao SX, Xu K, Zhang BY, Huo YT, Liu JC, Zeng LX, Dang SN, Yan H, and Mi BB
- Subjects
- Humans, Cohort Studies, Epidemiologic Studies, China epidemiology, Cardiovascular Diseases
- Abstract
Isotemporal substitution model is a powerful tool to explore the real association between physical behavior and health outcomes, which has the potential of the application in large-scale cohort study. This paper systematically introduces the principle of isotemporal substitution model and its implementation method in specific analysis to provide analytical ideas for the epidemiological research related to physical behavior in China. The baseline data of Regional Ethic Cohort Study in Northwest China conducted in Shaanxi province were used to analyze the relationship between physical behavior and cardiovascular disease with single-factor model, partition model and isotemporal substitution model. The advantages and disadvantages of different models were compared, and the advantages of isotemporal substitution model in quantifying physical activity health risk were introduced. Isotemporal substitution model could qualify physical behavior and health outcomes, which has wide application value in epidemiological research.
- Published
- 2022
- Full Text
- View/download PDF
48. [A 10-year retrospective analysis of spectrums and treatment options of orthostatic intolerance and sitting intolerance in children].
- Author
-
Cui YX, DU JB, Zhang QY, Liao Y, Liu P, Wang YL, Qi JG, Yan H, Xu WR, Liu XQ, Sun Y, Sun CF, Zhang CY, Chen YH, and Jin HF
- Subjects
- Child, Female, Humans, Male, Electrolytes, Metoprolol, Retrospective Studies, Salts, Sitting Position, Tilt-Table Test, Midodrine, Orthostatic Intolerance diagnosis, Orthostatic Intolerance epidemiology, Orthostatic Intolerance therapy, Postural Orthostatic Tachycardia Syndrome diagnosis, Syncope, Vasovagal diagnosis
- Abstract
Objective: To analyze the disease spectrums underlying orthostatic intolerance (OI) and sitting intolerance (SI) in Chinese children, and to understand the clinical empirical treatment options., Methods: The medical records including history, physical examination, laboratory examination, and imagological examination of children were retrospectively studied in Peking University First Hospital from 2012 to 2021. All the children who met the diagnostic criteria of OI and SI were enrolled in the study. The disease spectrums underlying OI and SI and treatment options during the last 10 years were analyzed., Results: A total of 2 110 cases of OI and SI patients were collected in the last 10 years, including 943 males (44.69%) and 1 167 females (55.31%) aged 4-18 years, with an average of (11.34±2.84) years. The overall case number was in an increasing trend over the year. In the OI spectrum, postural tachycardia syndrome (POTS) accounted for 826 cases (39.15%), followed by vasovagal syncope (VVS) (634 cases, 30.05%). The highest proportion of SI spectrum was sitting tachycardia (STS) (8 cases, 0.38%), followed by sitting hypertension (SHT) (2 cases, 0.09%). The most common comorbidity of OI and SI was POTS coexisting with STS (36 cases, 1.71%). The highest proportion of treatment options was autonomic nerve function exercise (757 cases, 35.88%), followed by oral rehydration salts (ORS) (687 cases, 32.56%), metoprolol (307 cases, 14.55%), midodrine (142 cases, 6.73%), ORS plus metoprolol (138 cases, 6.54%), and ORS plus midodrine (79 cases, 3.74%). The patients with POTS coexisting with VVS were more likely to receive pharmacological intervention than the patients with POTS and the patients with VVS (41.95% vs. 30.51% vs . 28.08%, χ
2 = 20.319, P < 0.01), but there was no significant difference in the proportion of treatment options between the patients with POTS and the patients with VVS., Conclusion: POTS and VVS in children are the main underlying diseases of OI, while SI is a new disease discovered recently. The number of children with OI and SI showed an increasing trend. The main treatment methods are autonomic nerve function exercise and ORS. Children with VVS coexisting with POTS were more likely to take pharmacological treatments than those with VVS or POTS only.- Published
- 2022
49. Corrigendum to "Fermented soybean meal increases nutrient digestibility via the improvement of intestinal function, anti-oxidative capacity and immune function of weaned pigs" [Animal 16(6) (2022) 100557].
- Author
-
Yan H, Jin JQ, Yang P, Yu B, He J, Mao XB, Yu J, and Chen DW
- Published
- 2022
- Full Text
- View/download PDF
50. Experimental Limits on Exotic Spin and Velocity Dependent Interactions Using Rotationally Modulated Source Masses and an Atomic-Magnetometer Array.
- Author
-
Wu KY, Chen SY, Sun GA, Peng SM, Peng M, and Yan H
- Abstract
Various theories beyond the standard model predict new interactions mediated by new light particles with very weak couplings to ordinary matter. Interactions between polarized electrons and unpolarized nucleons proportional to g_{V}^{N}g_{A}^{e}σ[over →]·v[over →] and g_{A}^{N}g_{A}^{e}σ[over →]·v[over →]×r[over →] are two such examples, where σ[over →] is the spin of the electrons, r[over →] and v[over →] are position and relative velocity between the polarized electrons and nucleons, g_{V}^{N}/g_{A}^{N} is the vector or axial-vector coupling constant of the nucleon, and g_{A}^{e} is the axial-vector coupling constant of the electron. Such interactions involving a vector or axial-vector coupling g_{V}^{N}/g_{A}^{N} at one vertex and an axial-vector coupling g_{A}^{e} at the polarized electron vertex can be induced by the exchange of spin-1 bosons. We report new experimental upper limits on such exotic spin-velocity-dependent interactions of the electron with nucleons from dedicated experiments based on a recently proposed scheme. We rotationally modulated two ∼6 Kg source masses at a frequency of 20 Hz. We used four identical atomic magnetometers in an array form to increase the statistics and cancel the common-mode noise. We applied a data processing method based on high precision numerical integration for the four harmonic frequencies of the signal. We reverse the rotation direction of the source masses to flip the signal due to the new interactions; thus, we can apply the [+1,-3,+3,-1] weighting method to remove possible slow drifting. Our constraint on the product of vector and axial-vector couplings is |g_{V}^{N}g_{A}^{e}|<2.1×10^{-34} and on the product of axial-vector and axial-vector couplings is |g_{A}^{N}g_{A}^{e}|<2.4×10^{-22} for an interaction range of 10 m. The new constraints on vector-axial-vector interaction improved by as much as more than 4 orders of magnitude and on axial-axial interaction by as much as 2 orders of magnitude in the corresponding interaction range, respectively.
- Published
- 2022
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.