76
|
Shi J, Zheng R, Gao H, Zhao Z, Wu H, Zhang Z. Podocyte infolding glomerulopathy with undifferentiated connective tissue disease: a case report. Ultrastruct Pathol 2020; 44:245-248. [PMID: 32172632 DOI: 10.1080/01913123.2020.1739791] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Podocyte infolding glomerulopathy (PIG) is a special type of glomerular disease that has been proposed in recent years and has attracted considerable attention. PIG is characterized by the formation of microspheres and microtubules in thickened glomerular basement membrane (GBM) on electron microscopy (EM), which is recognized as podocyte cytoplasmic infolding to the GBM. However, to date, only a few cases of PIG have been reported. Herein, we report a case of a 33-year-old female with PIG with undifferentiated connective tissue disease (UCTD) in China and review the literature.
Collapse
|
77
|
Wang M, Li P, Wang H, Dong L, Wu C, Zhao Z. Identification and spatiotemporal expression of gpr161 genes in zebrafish. Gene 2020; 730:144303. [PMID: 31884103 DOI: 10.1016/j.gene.2019.144303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/26/2019] [Accepted: 12/18/2019] [Indexed: 11/16/2022]
Abstract
G protein coupled Receptor 161 (GPR161) is a ciliary orphan GPCR. It is reported to play critical roles in regulating vertebrate Hedgehog (Hh) signaling pathway, that is conserved in metazoan and functions in earlier embryogenesis and homeostasis of adult metabolism. However, to date, all GPR161 functional studies were performed only in mouse. Knock out gpr161 in NIH3T3 cell lines, the common material for Hh mechanism research, failed to give any obvious Hh pathway defects, raising the question that whether GPR161 functions in Hh pathway is conserved in vertebrate system. Here, we described the characterization and spatiotemporal expression of two zebrafish gpr161 homologs, gpr161a and gpr161b. gpr161a was renamed of the gpr161 previously identified, while gpr161b was novel identified. The whole-mount in situ hybridization and quantitative PCR results showed that gpr161a is initially expressed in maternal manner while gpr161b is not. Although these two gpr161 showed ubiquitously expressed at early embryonic stages, each of them had tissue specific accumulation. gpr161a is abundant in the central nervous system (CNS) and adaxial cells, where are rich of Hh responding cells. Together gpr161a was highly expressed in muscle and intestine in adult fishes. These results strongly suggest the regulating roles of Gpr161 a in zebrafish Hh signal transduction. gpr161b was also accumulated in the CNS but mainly at the midline in the neural tube, similar pattern as wnt5b expression in such area, suggesting its potential function correlated with WNT signaling pathway. Interestingly, we also found the specific accumulation of gpr161 in posterior blood island (PBI) at 24 hours post fertilization (hpf), indicating the gpr161 may play roles in early hematopoiesis in zebrafish. Our work provides a starting point to unveil the divergent functions of gpr161 in vertebrate and will shed light on the studies of mechanism of Hh and WNT pathways, as well as early hematopoiesis.
Collapse
|
78
|
Zhao Z, Shi H, Li J, Zhang Y, Chen C, Guo Y. Cumulative live birth rates according to the number of oocytes retrieved following the "freeze-all" strategy. Reprod Biol Endocrinol 2020; 18:14. [PMID: 32087702 PMCID: PMC7035702 DOI: 10.1186/s12958-020-00574-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 02/18/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND In recent years, some studies have shown that there is a positive association between the number of oocytes retrieved and the cumulative live birth rate (CLBR) after fresh and frozen cycles of one oocyte retrieval. However, almost no studies have examined the association between the number of oocytes retrieved and the CLBR when using the "freeze-all" strategy. We performed this study to investigate the effects of an extreme oocyte yield during the first "freeze-all" cycle on the cumulative live birth rate among patients younger than 35 years old. METHODS This was a retrospective cohort study performed in a university-affiliated reproductive medicine centre. Data obtained from 3276 women aged younger than 35 years who underwent their first "freeze-all" cycle (IVF/ICSI) were collected between January 2009 and December 2016. In all, 5025 frozen cycles took place during the follow-up period from January 2009 to December 2018. Patients were divided into five groups according to oocytes retrieved (group 1: 4-10 oocytes; group 2: 11-20 oocytes; group 3: 21-30 oocytes; group 4: 31-40 oocytes; group 5: > 40 oocytes). The primary outcome was the cumulative live birth rate. RESULTS Unadjusted results showed that the cumulative live birth rate significantly increased as the number of oocytes retrieved increased and reached up to 93.82% in cases with yields of 21-30 oocytes (P < 0.05), after which it did not have a significant increase (P > 0.05). After adjusting for confounders, our results showed that the number of oocytes retrieved is an independent positive predictor of cumulative live birth rate when using a "freeze-all" strategy. (P < 0.001). In addition, the fertilization rate and the gonadotropin dose also influenced the cumulative live birth rate (P<0.05). CONCLUSIONS Among women younger than 35 years old who underwent the "freeze-all" strategy, the number of oocytes retrieved positively correlated with the cumulative live birth rate. Taking both efficacy and safety into account, ovarian stimulation should be rational, and the upper limit of the oocyte yield should be no more than 30.
Collapse
|
79
|
Xing X, Zhao Z, Wu J. Direct image-based fractal characterization of micromorphology of calcium carbonate fouling crystals. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2019.08.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
80
|
Fan L, Zan Q, Lin B, Wang X, Gong X, Zhao Z, Shuang S, Dong C, Wong MS. Hypoxia imaging in living cells, tissues and zebrafish with a nitroreductase-specific fluorescent probe. Analyst 2020; 145:5657-5663. [DOI: 10.1039/d0an00378f] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We report a nitroreductase-specific fluorescent probe (NTNO) for hypoxia imaging in living cells, tissues and zebrafish.
Collapse
|
81
|
Zhao ZH. [Clear aligner therapy: risks and clinical strategies]. ZHONGHUA KOU QIANG YI XUE ZA ZHI = ZHONGHUA KOUQIANG YIXUE ZAZHI = CHINESE JOURNAL OF STOMATOLOGY 2019; 54:798-802. [PMID: 31874477 DOI: 10.3760/cma.j.issn.1002-0098.2019.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Clear aligner, as a transparent and removable appliance, offers an alternative to conventional fixed appliance to patients with high demands for esthetics and comfort. Meanwhile, the rapid development of materials and techniques has made clear aligner more widely used in orthodontics. However, there are still several concerns and risks in clinical practice of clear aligners, which may result in unfavorable outcomes. Herein, we have discussed the clinical risks of clear aligner therapy, and provided some targeted strategies, in order to promote the clinical application of clear aligners.
Collapse
|
82
|
Chang YY, Wang YG, Fan P, Wang JQ, Shu YQ, Li R, Zhong XN, Long L, Zhao ZH, Li CX, Qiu W. [Expression of HLA-DP in patients with neuromyelitis optica spectrum disorders]. ZHONGHUA YI XUE ZA ZHI 2019; 99:3574-3580. [PMID: 31826574 DOI: 10.3760/cma.j.issn.0376-2491.2019.45.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect of HLA-DP gene expression on the susceptibility and disease status of neuromyelitis optica spectrum disorders (NMOSD). Methods: A total of 86 NMOSD patients (52 in acute phase and 34 in remission phase), 52 multiple sclerosis (MS) patients (20 in acute phase and 32 in remission phase) diagnosed in Department of Neurology, the Third Affiliated Hospital of Sun Yat-sen University and 29 healthy controls were enrolled prospectively. Genotyping of HLA-DP was performed. The expression levels of HLA-DP molecules in peripheral blood B cells and monocytes were measured by flow cytometry. The transcription levels of HLA-DPB1 mRNA in peripheral blood mononuclear cells (PBMC) were measured by real time-PCR. The results were compared among different groups Results: There was no statistically significant difference of the distributions of HLA-DPB1*0501/HLA-DPB1*0501, HLA-DPB1*0501/X and X/X genotypes and the frequencies of allele of HLA-DPB1*0501 among NMOSD, MS patients and healthy controls (P=0.96 and 0.71, respectively). The expression levels of HLA-DP on the surface of B cells in NMOSD patients, especially in remission phase patients, were significantly higher than those in healthy controls(212±328 and 374±394 vs 55±57, P=0.049 and 0.002, respectively). The expression levels of HLA-DP on the surface of monocytes in NMOSD patients in acute phase were significantly higher than those in healthy controls(158±175 vs 65±90, P=0.025). The transcription levels of PMBC HLA-DPB1 mRNA in acute phase and remission phase of NMOSD patients were significantly higher than those in healthy controls (3.0±1.4 and 2.9±1.3 vs 1.5±1.4, P=0.000 and 0.003, respectively). The expression levels of HLA-DP molecules on the surface of peripheral blood B cells and monocytes and the transcription levels of PMBC HLA-DPB1 mRNA in MS patients at the acute and remission stages were not significantly different from those in healthy controls. The expression levels of HLA-DP molecules on the surface of B cells in patients with HLA-DPB1*0501/HLA-DPB1*0501, HLA-DPB1*0501/X and X/X genotypes were statistically different (P=0.017). Conclusion: HLA-DP gene transcription and molecular expression levels in antigen presenting cells may affect the susceptibility and disease status of NMOSD patients, while HLA-DPB1*0501 allele may affect the transcription and molecular expression levels of HLA-DP gene in antigen presenting cells.
Collapse
|
83
|
Zhou YA, Li P, Zhang Y, Xiong Q, Li C, Zhao Z, Wang Y, Xiao H. Identification of a novel compound heterozygous IDUA mutation underlies Mucopolysaccharidoses type I in a Chinese pedigree. Mol Genet Genomic Med 2019; 8:e1058. [PMID: 31758674 PMCID: PMC6978265 DOI: 10.1002/mgg3.1058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 11/01/2019] [Accepted: 11/02/2019] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Mucopolysaccharidosis type I (MPS I) is a rare autosomal storage disorder resulting from the defective alpha-L-iduronidase (encoded by IDUA) enzyme activity and accumulation of glycosaminoglycans (GAGs) in lysosomes. So far, more than 100 IDUA causative mutations have been identified leading to three MPS I phenotypic subtypes: Hurler syndrome (severe form), Hurler/Scheie syndrome (intermediate form), and Scheie syndrome (mild form). METHODS Whole-exome sequencing (WES) was performed to identify the underlying genetic mutations. To verify the identified variations, Sanger sequencing was performed for all available family members following PCR amplification. The impact on IDUA protein was analyzed by sequential analysis and homology modeling. RESULTS A novel IDUA heterozygous single base insertion (c.1815dupT, p.V606Cfs51* ) and a known missence mutation (c.T1037G, p.L346R) were detected in our patient diagnosed as congenital heart disease with heart valve abnormalities. The novel frameshift mutation results in a complete loss of 48 amino acids in the Ig-like domain and causes the formation of a putative protein product which might affect the IDUA enzyme activity. CONCLUSIONS A novel compound heterozygous IDUA mutation (c.1815dupT, p.V606Cfs51* ) was found in a Chinese MPS I family. The identification of the mutation facilitated accurate genetic counseling and precise medical intervention for MPS I in China.
Collapse
|
84
|
Luo Y, Dai LM, Jia M, Zhao ZH, Hu CM, Qi WY, Zhang JQ. [Study on the relationship between EPHX1 gene polymorphism and antioxidant capacity in patients with chronic obstructive pulmonary disease]. ZHONGHUA JIE HE HE HU XI ZA ZHI = ZHONGHUA JIEHE HE HUXI ZAZHI = CHINESE JOURNAL OF TUBERCULOSIS AND RESPIRATORY DISEASES 2019; 42:760-764. [PMID: 31594110 DOI: 10.3760/cma.j.issn.1001-0939.2019.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the difference of mRNA, protein expression levels and the indexes of peripheral blood antioxidant capacity in peripheral blood lymphocytes of different EPHX1 genotypes in chronic obstructive pulmonary disease(COPD). Methods: A case-control study was conducted to collect peripheral blood samples of 220 stable chronic COPD patients with smoking history and 230 healthy smokers (control group) from October 2016 to February 2018 in the First Affiliated Hospital of Kunming Medical University, and the genetic testing was carried out according to the operation instructions of BigDye Terminator v1.1 DNA Sequencing Kit. Based on their EPHX1 exon 3 and exon 4 polymorphism status, the EPHX1 was classified into 4 groups, i. e., normal activity, slow activity, extremely slow activity and fast activity. Then COPD patients were allocated to either a slow activity group (slow and very slow activity) or a fast activity group (normal and fast activity) according to EPHX1 genotype and gene activity. The expression of EPHX1 mRNA and protein in peripheral blood lymphocytes were detected by qRT-PCR and Western blot, and indexes of serum antioxidant capacity was detected by corresponding kits. Results: (1)The 2(-ΔΔCt) of the control group was 1.000, and the 2(-ΔΔCt) of the COPD group was 1.052±0.023. There was no significant difference in the level of EPHX1 mRNA expression between the two groups (t=1.992 P=0.865). The level of EPHX1 mRNA expression in the slow activity group was not different significantly compared to that in the fast-active group (1.053±0.023 vs 1.048±0.021, t=1.133, P=0.260). (2)The level of EPHX1 protein expression by Western blot analysis showed that the EHPX1/GAPDH gray ratio was not different significantly between the COPD group and the control group (0.613±0.089 vs 0.602±0.075, t=0.805, P=0.422). The level of EPHX1 protein expression in the slow activity group was not significantly different compared to that in the fast activity group (0.606±0.088 vs 0.622±0.092, t=-0.786 P=0.434). (3)There were significant differences in indexes of antioxidant capacity between the control group and the COPD group (P<0.05). There were significant differences in indexes of antioxidant capacity between the slow activity group and the fast activity group of COPD patients (P<0.05). Conclusions: The different antioxidant capacity of COPD patients with different EPHX1 genotypes may be related to the polymorphism of EPHX1 gene affecting the activity of microsomal epoxidase, but not to the level of EPHX1 mRNA and protein expression.
Collapse
|
85
|
Mao X, Xu Z, Xu X, Zeng M, Zhao Z, Zhang Z, Ding X, Wu H. TGF-β1 inhibits the autophagy of podocytes by activating mTORC1 in IgA nephropathy. Exp Cell Res 2019; 385:111670. [PMID: 31600491 DOI: 10.1016/j.yexcr.2019.111670] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 09/11/2019] [Accepted: 10/05/2019] [Indexed: 12/21/2022]
Abstract
IgA nephropathy (IgAN) is a mesangial proliferative glomerulonephritis which often shows proteinuria, an indicator for podocyte damage. TGF-β1 has been known to contribute to podocyte injury by inducing apoptosis, cytoskeleton relocation or cytoskeleton loss. And Decorin, a small proteoglycan known to neutralize TGF-β1, was reported to induce autophagy in vascular endothelial cells. However, it remains unknown how TGF-β1 and Decorin can affect podocyte autophagy in mesangial proliferative glomerulonephritis. In this study, we used in vivo and in vitro models to find out the effect of TGF-β1 and Decorin on podocyte autophagy. P-rpS6 and p-ULK1 were detected by Western blot to show the activation of mTORC1 pathway following TGF-β1 treatment. Also, we collected serum from IgAN patients and anti-Thy1.1 nephritis, and quantified TGF-β1 and Decorin using ELISA. Together, we showed that TGF-β1 could activate mTORC1 and inhibit autophagy, while Decorin has precisely the opposite effect. As the mesangial cells (MCs) proliferate, TGF-β1 increases and Decorin decreases in the serum of IgAN and anti-Thy1.1 nephritis. This finding deepened our understanding regarding how MC proliferation could finally result in podocyte dysfunction.
Collapse
|
86
|
Jiang X, Zhang L, Gao G, Yao X, Zhao Z, Shen Q. High rates of ammonium recycling in northwestern Lake Taihu and adjacent rivers: An important pathway of nutrient supply in a water column. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 252:1325-1334. [PMID: 31252130 DOI: 10.1016/j.envpol.2019.06.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 06/06/2019] [Accepted: 06/06/2019] [Indexed: 06/09/2023]
Abstract
The ammonium (NH4+) pool in the water column of eutrophic lakes is dynamic and undergoes tightly coupled production and consumption processes because of the metabolism of bacterial and algal communities, particularly in summer. However, NH4+ recycling rates along nutrient gradients at river-lake transitional zones and the extent to which NH4+ regeneration can compensate for consumption have been poorly studied. In August (flood period) and November (normal period), 2016, NH4+ regeneration rates (REGs) and potential uptake rates (Upots) were measured in northwestern Lake Taihu and adjacent rivers. Results showed that the REGs ranged from 0.09 to 3.30 μmol N L-1 h-1 and the Upots ranged from 0.20 to 4.88 μmol N L-1 h-1, with higher recycling rates occurring at the river sites. Yet, the lake sites showed significantly higher water column NH4+ demand (WCAD) than that of the adjacent river sites during both seasons (p < 0.05), probably as a result of the low REGs and the lack of exogenous nitrogen (N) inputs. The flood period showed significantly higher REG and Upot values than those of the normal period (p < 0.05), probably controlled by higher water temperature and algal biomass. This study confirms that regenerated NH4+ was more important than the ambient NH4+ for sustaining cyanobacterial blooms in northwestern Lake Taihu and indicates that the river-lake transitional zones are key areas for N control in this hypereutrophic system.
Collapse
|
87
|
Liu K, Sun MM, Zhao ZH, Wei N, Jiang GZ, Wang ZY, Zhang L, Zhu XY, Dai LP, Yang HM, Wang T, Chen KS. Effect of RhoC silencing on multiple myeloma xenografts and angiogenesis in nude mice. J BIOL REG HOMEOS AG 2019; 33:1387-1394. [PMID: 31507136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, we investigated the expression of RhoC in the multiple myeloma (MM) cell line RPMI- 8226, as well as the effects of silencing RhoC on the growth of tumor xenografts and tumor-induced angiogenesis in nude mice with MM. For this purpose, we transduced RPMI-8226 cells with lentiviral particles overexpressing short hairpin RNAs (shRNA) targeting RhoC. Tumor xenografts were generated by subcutaneously injecting nude mice with RPMI-8226 cells overexpressing control shRNA [negative control (NC) group] or the RhoC shRNA [the experimental (S) group], respectively. RhoC protein and mRNA levels in the tumor xenografts were measured. Nude mice were also subcutaneously inoculated with Matrigel mixed with vascular endothelial growth factor, and CD31 and KI67 levels in the tumor xenografts were measured by immunohistochemistry. Similarly, we assessed tumor xenograft growth and angiogenesis in Matrigel implants in the mice of both groups. We found that RhoC levels, microvessel density, and CD31 labeling index were more reduced in the S group than in the NC group. However, there was no significant difference in the size of tumor xenografts between the 2 groups. The number of new vessels and the neovascular length in the Matrigel implants were significantly lower in the S group than in the NC group. Therefore, we concluded that RhoC expression in myeloma xenografts has important effects on the induction of angiogenesis.
Collapse
|
88
|
Xiong Q, Li W, Li P, Zhao Z, Wu C, Xiao H. Functional evidence for a de novo mutation in WDR45 leading to BPAN in a Chinese girl. Mol Genet Genomic Med 2019; 7:e858. [PMID: 31332960 PMCID: PMC6732291 DOI: 10.1002/mgg3.858] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 06/26/2019] [Accepted: 07/01/2019] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Beta-propeller protein-associated neurodegeneration (BPAN, OMIM 300894) is an X-linked neurodegenerative disorder caused by mutations in WDR45. WDR45 is required for autophagy, defect in WDR45 impaired autophagy which contributes for the pathogenesis of BPAN. Previously, we reported a novel de novo mutation (c.1040_1041del, p.Glu347GlyfsTer7) in WDR45 (NM_007075) in a 3-year-old Chinese girl with BPAN. METHODS The protein structure was constructed using SWISS-MODEL and the isoelectric point (pI) was predicted by the online pI/Mw tool at ExPASy. The functional effects of this mutation were predicted by two online software programs: PROVEN and MutationTaster. Stable overexpression of Flag-tagged wild-type or mutant WDR45 in HeLa cells was constructed. Protein levels of LC3 and p62 were analyzed by western blot upon treatment with/without autophagy inhibitor Bafilomycin A1, the formation of LC3 puncta were analyzed in HeLa cells transfected with mCherry-LC3 by confocal microscopy. RESULTS The mutation resulted in a shift of pI from 6.74 to 8.84 and was predicted to be pathogenic. The protein levels of LC3-II and p62 were increased in cells overexpression of wild-type and mutant WDR45 while the protein levels were not increased in cells overexpression of mutant WDR45 upon treatment with autophagy inhibitor Bafilomycin A1. Results from confocal microscopy revealed that LC3-positive puncta were increased in cells expressing both wild-type and mutant WDR45 while the number of LC3-positive puncta was not increased in cells expressing mutant WDR45 upon treatment with Bafilomycin A1. CONCLUSION Our study evidenced that this novel mutation in WDR45 impaired autophagy in cells thus this mutation is the cause for BPAN in this patient.
Collapse
|
89
|
Cai Y, Zhong XM, Wang YQ, Yang JG, Zhao ZH, Fei ZH, Zhang L, Gu H, Yang T. [Clinical analysis of MRS and DWI in predicting delayed brain edema after spontaneous intracerebral hemorrhage]. ZHONGHUA YI XUE ZA ZHI 2019; 99:1796-1799. [PMID: 31207690 DOI: 10.3760/cma.j.issn.0376-2491.2019.23.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Prediction of delayed brain edema after spontaneous intracerebral hemorrhage by magnetic resonance spectroscopy combined with diffusion weighted imaging, and to explore the causes and treatment of delayed brain edema after intracerebral hemorrhage. Methods: The patients with spontaneous cerebral hemorrhage diagnosed by CT from January 2015 to June 2018 in our hospital were analyzed. Magnetic resonance spectroscopy and diffusion weighted imaging examinations were performed on the third day after hemorrhage. It was diagnosed as delayed brain edema that the edema range enlarged more than 1 cm in CT scan on the 14th day Compare with the 7th Day. The patients were divided into the delayed brain edema group and the control group(n=27 for each). The NAA/Cr value and rADC value of the edema area in the two groups were analyzed by T test. Results: The NAA/Cr value (1.67±0.38) in the edema area of patients with delayed brain edema was significantly decreased Compare with the control group(1.92±0.42), and the rADC value (2.59±0.42) reduced significantly Compare with the control group (2.93±0.51), the differences were statistically significant (P<0.05). Conclusion: MRS and DWI were susceptive in showing delayed brain edema lesions at hyper-early phase. Combination of MRS and DWI can provide a basis for clinical individual treatment programs selection and prognostic evaluation.
Collapse
|
90
|
Huang YN, Zhao ZH, Mao HJ, Yang JF, Wang T, Zhao L, Yang LM, Yu GM, Wang C. [Correlation between DCE-MRI quantitative perfusion histogram parameters, apparent diffusion coefficient and Ki-67 in different pathological types of lung cancer]. ZHONGHUA YI XUE ZA ZHI 2019; 99:1645-1650. [PMID: 31189264 DOI: 10.3760/cma.j.issn.0376-2491.2019.21.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the efficacy of dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) histogram molecular imaging index, apparent diffusion coefficient (ADC) in different types of lung cancer and explore their correlation with Ki-67. Methods: A total of 33 cases of lung cancer patients confirmed by pathology in Shaoxing People's Hospital from March 2017 to March 2018 were collected, 28 males and 5 females aged 50-85 years old, including 15 cases of squamous cell carcinoma, 12 cases of adenocarcinoma, and 6 cases of small cell carcinoma. All patients performed DCE-MRI and DWI imaging within one week before surgery or puncture. ADC values, DCE-MRI quantitative perfusion parameters by histogram metrics analysis (mean value, skewness, kurtosis, uniformity, entropy, energy, quantile) of K(trans), K(ep), V(e), and V(p) were then collected. Ki-67 expression in lung cancer tissue was detected by immunohistochemical method. One-way analysis of variance and least significant difference were used to compare the differences among the parameters of the three groups which were normal distribution and equal variances, while Kruskal-Walls test and Mann-Whitney U test were used to compare the parameters that did not conform to normal distribution or variance. Pearson correlation analysis was used to compare the correlations between quantitative perfusion histogram parameters, ADC values and immunohistochemical scores of Ki-67. Results: The Ki-67 count in small cell lung cancer(458±82, P=0.011) and squamous cell carcinoma(355±277, P=0.034)were significantly higher than that in adenocarcinoma (168±164). The correlation analysis showed that there was a significant negative correlation between ADC values and Ki-67 (P=0.018, r=-0.416). And V(e) (Q5, Q10) was negatively related to Ki-67 (P=0.017, r=-0.420; P=0.040, r=-0.366). In squamous cell carcinoma patients, V(e) (homogeneity) was significantly negatively correlated with the expression of Ki-67 (P=0.033, r=-0.570). K(trans)(homogeneity) and V(e) (homogeneity, Q5, Q10, Q25) were significantly positively correlated with ADC values (P value from 0.001 to 0.035, r value from 0.545 to 0.765). Conclusion: DCE-MRI quantitative perfusion histogram parameters, ADC value can evaluate the lung cancer cell proliferation activity in different pathological types.
Collapse
|
91
|
Zhao Z, Hao J, Li X, Chen Y, Qi X. MiR-21-5p regulates mycobacterial survival and inflammatory responses by targeting Bcl-2 and TLR4 in Mycobacterium tuberculosis-infected macrophages. FEBS Lett 2019; 593:1326-1335. [PMID: 31090056 DOI: 10.1002/1873-3468.13438] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 05/07/2019] [Accepted: 05/08/2019] [Indexed: 11/09/2022]
Abstract
To date, very little is known about the role of microRNA-21-5p (miR-21-5p) in Mycobacterium tuberculosis (M.tb)-infected macrophages. Here, we show that M.tb infection of RAW264.7 and THP-1 cells increases the expression of miR-21-5p. MiR-21-5p enhances M.tb survival and apoptosis, and attenuates the secretion of inflammatory cytokines, including interleukin (IL)-1β, IL-6, and tumor necrosis factor-α in M.tb-infected macrophages. Dual-luciferase reporter assay revealed that the 3'-UTR of B-cell lymphoma 2 (Bcl-2) or toll-like receptor 4 (TLR4) is a direct target of miR-21-5p. Enforced expressions of Bcl-2 or TLR4 partially attenuate the suppressive effects of miR-21-5p on cell viability and inflammatory cytokines, and effectively decrease bacterial burden. Therefore, the present study highlights a novel role for miR-21-5p in regulation of mycobacterial survival and inflammatory responses by targeting Bcl-2 and TLR4 in M.tb-infected macrophages.
Collapse
|
92
|
Li F, Mao X, Zhuang Q, Zhao Z, Zhang Z, Wu H. Inhibiting 4E-BP1 re-activation represses podocyte cell cycle re-entry and apoptosis induced by adriamycin. Cell Death Dis 2019; 10:241. [PMID: 30858353 PMCID: PMC6411872 DOI: 10.1038/s41419-019-1480-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 02/24/2019] [Accepted: 02/25/2019] [Indexed: 02/06/2023]
Abstract
Podocyte loss is one of the determining factors for the progression toward glomerulosclerosis. Podocyte is terminally differentiated and does not typically proliferate following injury and loss. However, recent evidence suggested that during renal injury, podocyte could re-enter the cell cycle, sensitizing the cells to injury and death, but the molecular mechanisms underlying it, as well as the cell fate determination still remained unclear. Here, using NPHS2 Cre; mT/mG transgenic mice and primary podocytes isolated from the mice, we investigated the effect of mammalian target of rapamycin complex 1 (mTORC1)/4E-binding protein 1 (4E-BP1) signaling pathway on cell cycle re-entry and apoptosis of podocyte induced by adriamycin. It was found that podocyte cell cycle re-entry could be induced by adriamycin as early as the 1st week in vivo and the 2nd hour in vitro, accompanied with 4E-BP1 activation and was followed by podocyte loss or apoptosis from the 4th week in vivo or the 4th hour in vitro. Importantly, targeting 4E-BP1 activation by the RNA interference of 4E-BP1 or pharmacologic rapamycin (inhibitor of mTORC1, blocking mTORC1-dependent phosphorylation of its substrate 4E-BP1) treatment was able to inhibit the increases of PCNA, Ki67, and the S-phase fraction of cell cycle in primary podocyte during 2–6 h of adriamycin treatment, and also attenuated the following apoptotic cell death of podocyte detected from the 4th hour, suggesting that 4E-BP1 could be a regulator to manipulate the amount of cell cycle re-entry provided by differentiated podocyte, and thus regulate the degree of podocyte apoptosis, bringing us a new potential podocyte-protective substance that can be used for therapy.
Collapse
|
93
|
Wan P, Zhang G, Wang H, Zhao Z, Hu Y, Zhang G, Hui G, Liu W. Impacts of different forest management methods on the stand spatial structure of a natural Quercus aliena var. acuteserrata forest in Xiaolongshan, China. ECOL INFORM 2019. [DOI: 10.1016/j.ecoinf.2019.01.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
94
|
Huang F, Zhang X, Zhao Z, Xu J, Li Z. Image–text sentiment analysis via deep multimodal attentive fusion. Knowl Based Syst 2019. [DOI: 10.1016/j.knosys.2019.01.019] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
95
|
Qu Y, Zhao H, Nobrega DB, Cobo ER, Han B, Zhao Z, Li S, Li M, Barkema HW, Gao J. Molecular epidemiology and distribution of antimicrobial resistance genes of Staphylococcus species isolated from Chinese dairy cows with clinical mastitis. J Dairy Sci 2019; 102:1571-1583. [DOI: 10.3168/jds.2018-15136] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 10/11/2018] [Indexed: 11/19/2022]
|
96
|
Zhou Y, Li C, Li M, Zhao Z, Tian S, Xia H, Liu P, Han Y, Ren R, Chen J, Jia C, Guo W. Mutation analysis of common deafness genes among 1,201 patients with non-syndromic hearing loss in Shanxi Province. Mol Genet Genomic Med 2019; 7:e537. [PMID: 30693673 PMCID: PMC6418354 DOI: 10.1002/mgg3.537] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 08/12/2018] [Accepted: 11/16/2018] [Indexed: 12/24/2022] Open
Abstract
Background Hearing impairment is one of most frequent birth defects, which affects nearly 1 in every 1,000 live births. However, the molecular etiology of non‐syndromic deafness in China is not well studied. Here, we have investigated the presence of mutations in three genes commonly mutated in non‐syndromic deafness patients in Shanxi Province, which has the highest frequency of birth defects in China. Methods In total, 1,201 unrelated non‐syndromic deafness patients and 300 healthy individuals were enrolled. The hearing ability was confirmed by audiologic evaluation. Three major deafness‐related genes (GJB2, SLC26A4 (PDS), and mtDNA 12S rRNA) of all individuals enrolled were analyzed by Sanger sequencing. Results The results showed that GJB2 mutations accounted for 21.23% (255/1,201) in the patient group, with c.235delC, a hotspot mutation, accounting for 10.99% (132/1,201). Moreover, 11 new GJB2 mutations were identified. SLC26A4 mutations accounted for 9.33% (112/1,201) in the patient group, with IVS7‐2A>G as the most prevalent mutation accounting for 4.75% (57/1,201). In addition, 15 patients (1.25%) were found to carry mtDNA 12S rRNA c.1555A>G mutation, while only two cases had the mtDNA 12S rRNA c.1494C>T. Conclusion In our research, it was found that c.235delC in GJB2 and c.919‐2A>G (IVS7‐2A>G) in SLC26A4 were the highest frequency pathogenic variants in Shanxi Province. Taken together, our data will enrich the database of deafness mutations and will help clinical diagnosis, treatment, and genetic counseling of hearing impairment.
Collapse
|
97
|
Zheng Z, Deng G, Qi C, Xu Y, Liu X, Zhao Z, Zhang Z, Chu Y, Wu H, Liu J. Porous Se@SiO 2 nanospheres attenuate ischemia/reperfusion (I/R)-induced acute kidney injury (AKI) and inflammation by antioxidative stress. Int J Nanomedicine 2018; 14:215-229. [PMID: 30643402 PMCID: PMC6312062 DOI: 10.2147/ijn.s184804] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Objectives Acute kidney injury (AKI) is a growing global health concern, and is associated with high rates of mortality and morbidity in intensive care units. Se is a trace element with antioxidant properties. This study aimed to determine whether porous Se@SiO2 nanospheres could relieve oxidative stress and inflammation in ischemia/reperfusion (I/R)-induced AKI. Methods Male 6- to 8-week-old C57bl/6 mice were divided into four groups: sham + saline, sham + Se@SiO2, I/R + saline, and I/R + Se@SiO2. Mice in the I/R groups experienced 30 minutes of bilateral renal I/R to induce an AKI. Porous Se@SiO2 nanospheres (1 mg/kg) were intraperitoneally injected into mice in the I/R + Se@SiO2 group 2 hours before I/R, and the same dose was injected every 12 hours thereafter. Hypoxia/reoxygenation (H/R) was used to mimic I/R in vitro. PBS was used as a control treatment. Human kidney 2 cells were seeded into 12-well plates (5×105 cells/well) and divided into four groups: control + PBS group, control + Se@SiO2 group, H/R + PBS group, and H/R + Se@SiO2 group (n=3 wells). We then determined the expression levels of ROS, glutathione, inflammatory cytokines and proteins, fibrosis proteins, and carried out histological analysis upon kidney tissues. Results In vitro, intervention with porous Se@SiO2 nanospheres significantly reduced levels of ROS (P<0.05), inflammatory cytokines (P<0.05), and inflammation-associated proteins (P<0.05). In vivo, tubular damage, cell apoptosis, and interstitial inflammation during AKI were reduced significantly following treatment with porous Se@SiO2 nanospheres. Moreover, the occurrence of fibrosis and tubular atrophy after AKI was attenuated by porous Se@SiO2 nanospheres. Conclusion Porous Se@SiO2 nanospheres exhibited a protective effect in I/R-induced AKI by resisting oxidative stress and inflammation. This suggests that porous Se@SiO2 nanospheres may represent a new therapeutic method for AKI.
Collapse
|
98
|
Huang Z, Zhou Y, Fu X, Kou A, Fu H, Xiao H, Jin Y, Zhao Z. A novel INDEL mutation in the PTCH1 gene in a Chinese family with Gorlin syndrome. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2018; 11:6042-6046. [PMID: 31949694 PMCID: PMC6963077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 10/26/2018] [Indexed: 06/10/2023]
Abstract
Gorlin syndrome is a rare autosomal dominant disorder, and 50% of the cases are due to the mutation of PTCH1, the major receptor of the hedgehog signaling pathway. Here we report a new Gorlin syndrome family found in Xinzhou, China. A further sequence analysis found a novel PTCH1 INDEL mutation, NM_001083602.2: c.1516_1524delinsTGAGCTGGAGCTCCG (p. Ala506*), leading an N Terminal truncated protein. This truncated PTCH1 was considered as non-functional version as it loses almost all functional domains, including the 4-12 transmembrane domains and the intracellular and extracellular domains accordingly. Although the effect of the N-terminal truncated PTCH1 is not clear, Gorlin syndrome in these cases is due to haploinsufficiency. Our report enriches the Gorlin syndrome database and will help to unveil the molecular basis of this condition.
Collapse
|
99
|
Huang F, Zhang X, Li Z, Zhao Z. Bi-directional Spatial-Semantic Attention Networks for Image-Text Matching. IEEE TRANSACTIONS ON IMAGE PROCESSING : A PUBLICATION OF THE IEEE SIGNAL PROCESSING SOCIETY 2018; 28:2008-2020. [PMID: 30452372 DOI: 10.1109/tip.2018.2882225] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Image-text matching by deep models has recently made remarkable achievements in many tasks, such as image caption and image search. A major challenge of matching the image and text lies in that they usually have complicated underlying relations between them and simply modeling the relations may lead to suboptimal performance. In this paper, we develop a novel approach Bi-directional Spatial-Semantic Attention Networks (BSSAN), which leverages both the word to regions (W2R) relation and image object to words (O2W) relation in a holistic deep framework for more effectively matching. Specifically, to effectively encode the W2R relation, we adopt LSTM with bilinear attention function to infer the image regions which are more related to the particular words, which is referred as the W2R attention network. On the other side, the O2W attention network is proposed to discover the semanticallyclose words for each visual object in the image, i.e., the visual object to words (O2W) relation. Then a deep model unifying both of the two directional attention networks into a holistic learning framework is proposed to learn the matching scores of image and text pairs. Compared to existing image-text matching methods, our approach achieves state-of-the-art performance on the datasets of Flickr30K and MSCOCO.
Collapse
|
100
|
Li Q, Wu J, Zhao Z. Spatial and temporal distribution of Polycyclic Aromatic Hydrocarbons (PAHs) in sediments from Poyang Lake, China. PLoS One 2018; 13:e0205484. [PMID: 30335771 PMCID: PMC6193648 DOI: 10.1371/journal.pone.0205484] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 09/26/2018] [Indexed: 11/18/2022] Open
Abstract
Concentrations of polycyclic aromatic hydrocarbons (PAHs) were measured in 22 surface sediment samples and an approximately 100-year scale sediment core collected from Poyang Lake. This valuable sediments enable analysis of spatial and temporal distribution patterns of PAH sources, and determine the anthropogenic impacts on Poyang Lake. Total PAH concentrations in the surface sediments ranged from 73.2 to 367.2 ng/g dw, and higher residues were encountered in regions with high-density populations and intensive human activities. Total PAH concentrations in the sediment core ranged from 42.0 to 334.0 ng/g dw and were grouped in two clusters (pre-1990s and post-1990s to the present). PAH concentrations in sediments changed both temporally and spatially, suggesting a difference in PAH sources. Before the 1990s, major PAH sources in the sediment core were from coal, wood and grass combustion. This finding naturally agrees with open lake conditions on a spatial scale, which were related to agricultural activities. Petroleum combustion from industrialization and urbanization has become the predominant PAH source in the sediment core from the 1990s to the present and corresponds to sources observed in the southwestern lake near the relatively developed Nanchang City. In the northern lake leading to the Yangtze River, certain petroleum-related contaminants from shipping have become the main PAH sources. The different PAH sources observed in sediments generally reflect the degree of socio-economic development in the Poyang Lake valley, which is consistent with the local written records, indirectly validating the connection of sediment PAH records to the history of human activities in and around Poyang Lake.
Collapse
|