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40 result(s) for "Tian, Guang-Lei"
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Contralateral C7 Nerve Root Transfer for Function Recovery in Adults: A Meta-analysis
Background:Root avulsion to all 5 roots of the brachial plexus is a common presentation and keeps a major reconstructive challenge.The contralateral C7 (CC7) nerve transfer has been used in treating brachial plexus avulsion injury (BPAI) since 1986.However,the effectiveness of the procedure remains a subject of controversy.The aim of this meta-analysis was to study surgical outcomes regarding motor and sensory recovery after CC7 nerve transfer.Methods:Chinese or English (i.e.,"contralateral c-7","contralateral c7","c7 nerve root",and "seventh cervical nerve root") keywords were used for a literature search for articles related to CC7 nerve transfer in several databases (i.e.,PubMed,Cochrane,Embase,CNKI,CQVIP,and Wanfang Data).Clinical research articles were screened,and animal studies as well as duplicate publications were excluded.Muscle strength and sensory recovery were considered to be effective only when the scores on the United Kingdom Medical Research Council scale were equal to or higher than M3 and S3,respectively.Results:The overall ipsilateral recipient nerve recovery rates were as follows:the efficiency rate for muscle strength recovery after CC7 nerve transfer was 0.57 (95% confidence interval [CI]:0.48-0.66) and for sensory recovery was 0.52 (95% CI:0.46-0.58).When the recipient nerve was the median nerve,the efficiency rate for muscle strength recovery was 0.50 (95% CI:0.39-0.61) and for sensory was 0.56 (95% CI:0.50-0.63).When the recipient nerve was the musculocutaneous nerve and the radial nerve,the efficiency rate for muscle strength recovery was 0.74 (95% CI:0.65-0.82) and 0.50 (95% CI:0.31-0.70),respectively.Conclusions:Transfer of CC7 nerves to musculocutaneous nerves leads to the best results.CC7 is a reliable donor nerve,which can be safely used for upper limb function reconstruction,especially for entirely BPAI.When modifying procedures,musculocutaneous nerves and median nerve can be combined as recipient nerves.
Overlapping Syndrome of Myocarditis, Myositis, Transaminitis, and Myasthenia Gravis in a Patient with Hepatocellular Carcinoma after Treatment with Immune Checkpoint Inhibitors: A Case Report and Literature Review
Immune checkpoint inhibitors (ICIs) are widely used to treat various cancers but can induce immune-related adverse events (irAEs) in patients. Herein, we report the case of a 68-year-old patient with hepatocellular carcinoma who developed an overlapping syndrome of irAEs after receiving ICIs. The patient received transcatheter arterial chemoembolization for hepatocellular carcinoma, followed by immunotherapy of 200 mg of camrelizumab every 3 weeks and 12 mg of lenvatinib mesylate daily. After receiving the second dose of camrelizumab treatment, the patient developed gradually worsening left eyelid ptosis and general weakness. One week later, the patient developed bilateral eyelid ptosis and suffocated while drinking water. Unfortunately, the patient was eventually diagnosed as ICI-related myocarditis, myositis, transaminitis, and myasthenia gravis based on a series of physical examinations. Subsequently, the patient was actively provided life support and symptomatic treatment. His symptoms greatly improved after treatment with methylprednisolone sodium succinate 40 mg once daily intravenously for 7 days, with gradually decreasing doses. IrAEs are common after ICI treatment. After ICI treatment initiation, close monitoring, early detection, and treatment of irAEs is required to improve clinical outcomes.
Silencing circ-RNA-049637 influences hydatid outer cyst wall formation by liver fibrosis
In diseases characterized by fibrosis, hepatic stellate cells (HSCs) are mesenchymal cells that play an important role in liver fibrosis. circRNAs are involved in regulating hydatid exocyst formation through miRNA sponge adsorption. The mechanisms of hepatic cystic hydatid outer cyst formation, HSC, and liver fibrosis are unclear. Based on our sequencing data, we validated the mechanism by which circRNA-049637 regulated hepatic cystic hydatid growth and promoted outer fibrocystic wall formation. Our results revealed that circRNA_049637 silencing promoted the proliferation of LX-2 human HSCs, affected the cell cycle, and increased the mRNA and protein expression levels of liver fibrosis-related indicators such as [alpha]-SMA, COL1A1, COL3A1, and TGFRII. CircRNA_049637 may induce the formation of hepatic hydatid cysts by promoting hepatic fibrosis via HSC activation.
An Analysis of the Pathogenic Genes and Mutation Sites of Macrodactyly
This study aimed to explore the pathogenic genes and mutation sites of macrodactyly. Whole-exome sequencing was performed on the pathological tissue and peripheral blood of 12 patients with macrodactyly who were operated in our hospital between June 2018 and May 2020. In order to conduct comprehensive bioinformatics analysis and screen the pathogenic genes of macrodactyly, the patients were divided into four groups: macrodactyly of finger group, macrodactyly of foot group, macrodactyly and syndactyly of finger group, and macrodactyly and syndactyly of foot group. The results of the whole-exome sequencing were verified using Sanger sequencing in order to clarify the pathogenic genes and mutation sites of macrodactyly, and immunohistochemical analysis of the protein signaling pathways encoded by the pathogenic genes was performed to observe the protein expression and further verify the mutant genes. In the comprehensive bioinformatics analysis and Sanger verification of the whole-exome sequencing, the PIK3CA gene mutation was screened as the pathogenic gene of macrodactyly. The mutation sites were identified as the p.E542K (c.G1624A) and p.E545K (c.G1633A) sites of exon10 and the p.H1047R (c.A3140G) and p.G1049R (c.G3145C) sites of exon21. Among these, the p.G1049R (c.G3145C) locus was found in macrodactyly for the first time. The mutation of the PIK3CA gene was also found to lead to increased expression of serine-threonine kinase (AKT) in adipocytes in the PI3K-AKT-mTOR signaling pathway. Mutation of the gene leads to the enhancement of the PI3K-AKT-mTOR signaling pathway, which is the cause of macrodactyly. There is also some diversity in PIK3CA gene mutation sites.
Influence of the Preparation Process on the Electrochemical Properties of xLiFePO4·yLi3V2(PO4)3/C Nano-Sized Composite Cathode Materials
In this paper, a series of xLiFePO4·yLi3V2(PO4)3/C (x/y = 1:0, 7:1, 5:1, 3:1, 1:1, 1:3 and 0:1, ratio in mol) nano-sized composite cathode materials were successfully prepared via the solid reaction method. Influence of x/y ratio, calcination temperatures and the content of citric acid on the composition, microstructure and electrochemical properties of the materials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and electrochemical measurements, et al. results showed that the xLFP·yLVP/C (x and y ≠ 0) composites were composed of olivine LiFePO4 and monoclinic Li3V2(PO4)3, both of which featured slight structural distortions as the formation of V-doped LFP/C and Fe-doped LVP/C, respectively; With the increase of calcination temperatures, the crystallinity and particles size of the 7LFP·LVP/C composites increased, when calcined at 700°C, the initial charge/discharge specific capacity of the composites reached a maximum value of 145.6 mAh/g, and the voltage drop values between charge/discharge platform possessed the minimum value(0.04 V), suggesting the minimum polarization of the composites in charge/discharge process. Content of citric acid did not affect the compositions of the composites, with the increase of the molar ratio of citric acid to V3+, the discharge specific capacities of 7LFP·LVP/C increased first and then decreased, when it equaled to 1.0:1.0, the discharge specific capacity of the relative composites was 119.18 mAh/g, with a capacity retention rate of 93.9 % after 50 cycles, owning the excellent electrochemical stability.
Experience with Diagnosis and Treatment of Infected Abdominal Aortic Aneurysms: An Analysis of Seven Cases
All patients had abdominal pain; six patients had high fever; five patients presented leukocytosis and increase of C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR); three patients had severe complications: one with diabetes, one with infection of HIV, and one with cancer; four patients had positive blood cultures: one with Staphylococcus aureus, two with Salmonella enteritis, and one with Escherichia coli; and one patient had a positive phlegm culture with Tubercle bacillus. [...]we should consider infected abdominal aortic aneurysms when the patients with saccular aneurysms have fever of unknown cause, rapid aneurysm progression, and low calcification of the aneurysm wall, and suspect highly the disease if hypodense images are found surrounding the wall of the abdominal aorta.
An Analysis of the Pathogenic Genes and Mutation Sites of Macrodactyly
Objective: This study aimed to explore the pathogenic genes and mutation sites of macrodactyly. Methods: Whole-exome sequencing was performed on the pathological tissue and peripheral blood of 12 patients with macrodactyly who were operated in our hospital between June 2018 and May 2020. In order to conduct comprehensive bioinformatics analysis and screen the pathogenic genes of macrodactyly, the patients were divided into four groups: macrodactyly of finger group, macrodactyly of foot group, macrodactyly and syndactyly of finger group, and macrodactyly and syndactyly of foot group. The results of the whole-exome sequencing were verified using Sanger sequencing in order to clarify the pathogenic genes and mutation sites of macrodactyly, and immunohistochemical analysis of the protein signaling pathways encoded by the pathogenic genes was performed to observe the protein expression and further verify the mutant genes. Results: In the comprehensive bioinformatics analysis and Sanger verification of the whole-exome sequencing, the PIK3CA gene mutation was screened as the pathogenic gene of macrodactyly. The mutation sites were identified as the p.E542K (c.G1624A) and p. E545K (c.G1633A) sites of exon10 and the p.H1047R (c.A3140G) and p.G1049R (c.G3145C) sites of exon21. Among these, the p. G1049R (c.G3145C) locus was found in macrodactyly for the first time. The mutation of the PIK3CA gene was also found to lead to increased expression of serine-threonine kinase (AKT) in adipocytes in the P13K-AKT-mTOR signaling pathway. Conclusion: Mutation of the PIK3CA gene leads to the enhancement of the P13K-AKT-mTOR signaling pathway, which is the cause of macrodactyly. There is also some diversity in PIK3CA gene mutation sites. Keywords: hand deformity, foot deformity, macrodactyly, PIK3CA gene
Influence of the Preparation Process on the Electrochemical Properties of xLiFePO sub(4) times yLi sub(3) V sub(2)(PO4) sub(3)/C Nano-Sized Composite Cathode Materials
In this paper, a series of xLiFePO sub(4) times yLi sub(3) V sub(2)(PO sub(4)) sub(3) /C (x/y = 1:0, 7:1, 5:1, 3:1, 1:1, 1:3 and 0:1, ratio in mol) nano-sized composite cathode materials were successfully prepared via the solid reaction method. Influence of x/y ratio, calcination temperatures and the content of citric acid on the composition, microstructure and electrochemical properties of the materials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and electrochemical measurements, et al. results showed that the xLFP times yLVP/C (x and y [not =] 0) composites were composed of olivine LiFePO sub(4) and monoclinic Li sub(3) V sub(2)(PO sub(4)) sub(3), both of which featured slight structural distortions as the formation of V-doped LFP/C and Fe-doped LVP/C, respectively; With the increase of calcination temperatures, the crystallinity and particles size of the 7LFP times LVP/C composites increased, when calcined at 700[degrees]C, the initial charge/discharge specific capacity of the composites reached a maximum value of 145.6 mAh/g, and the voltage drop values between charge/discharge platform possessed the minimum value(0.04 V), suggesting the minimum polarization of the composites in charge/discharge process. Content of citric acid did not affect the compositions of the composites, with the increase of the molar ratio of citric acid to V super(3+), the discharge specific capacities of 7LFP times LVP/C increased first and then decreased, when it equaled to 1.0:1.0, the discharge specific capacity of the relative composites was 119.18 mAh/g, with a capacity retention rate of 93.9 % after 50 cycles, owning the excellent electrochemical stability.
Prevalence of Nontraumatic Osteonecrosis of the Femoral Head and its Associated Risk Factors in the Chinese Population: Results from a Nationally Representative Survey
Background: Nontraumatic osteonecrosis of the femoral head (NONFH) is a debilitating disease that represents a significant financial burden for both individuals and healthcare systems. Despite its significance, however, its prevalence in the Chinese general population remains unknown. This study aimed to investigate the prevalence of NONFH and its associated risk factors in the Chinese population. Methods: A nationally representative survey of 30,030 respondents was undertaken from June 2012 to August 2013. All participants underwent a questionnaire investigation, physical examination of hip, and bilateral hip joint X-ray and/or magnetic resonance imaging exalnination. Blood samples were taken after overnight fasting to test serum total cholesterol, triglyceride, and high-density lipoprotein (HDL) and low-density lipoprotein (LDL) levels. We then used multivariate logistic regression analysis to investigate the associations between various metabolic, demographic, and lifestyle-related variables and NONFH. Results: NONFH was diagnosed in 218 subjects (0.725%) and the estimated NONFH cases were 8.12 million among Chinesepeople aged 15 years and over. The prevalence of NONFH was significantly higher in males than in females (1.02% vs. 0.51%, x^2 = 24.997, P 〈 0.001 ). Among NONFH patients, North residents were subjected to higher prevalence of NONFH than that of South residents (0.85% vs. 0.61%,x^2= 5.847, P = 0.016). Our multivariate regression analysis showed that high blood levels oftriglycerides, total cholesterol, LDL-cholesterol, and non-H DL-cholesterol, male, urban residence, family history of osteonecrosis of the femoral head. heavy smoking, alcohol abuse and glucocorticoid intake, overweight, and obesity were all significantly associated with an increased risk of NONFH. Conclusions: Our findings highlight that NONFH is a significantpublic health challenge in China and underscore the need for policy measures on the national level. Furthermore, NONFH shares a number of risk factors with atherosclerosis.
Haplotype-resolved genome assembly and allele-specific gene expression in cultivated ginger
Ginger (Zingiber officinale) is one of the most valued spice plants worldwide; it is prized for its culinary and folk medicinal applications and is therefore of high economic and cultural importance. Here, we present a haplotype-resolved, chromosome-scale assembly for diploid ginger anchored to 11 pseudochromosome pairs with a total length of 3.1 Gb. Remarkable structural variation was identified between haplotypes, and two inversions larger than 15 Mb on chromosome 4 may be associated with ginger infertility. We performed a comprehensive, spatiotemporal, genome-wide analysis of allelic expression patterns, revealing that most alleles are coordinately expressed. The alleles that exhibited the largest differences in expression showed closer proximity to transposable elements, greater coding sequence divergence, more relaxed selection pressure, and more transcription factor binding site differences. We also predicted the transcription factors potentially regulating 6-gingerol biosynthesis. Our allele-aware assembly provides a powerful platform for future functional genomics, molecular breeding, and genome editing in ginger.