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Wang XX, Lu JF, Wu YL, Ma LN, Jin Y, Cao ZH, Ren S, Liu YL, Zheng YY, Chen XY. [Clinical study on liver function, virology, serological changes and the safety of drug withdrawal in pregnant women who are chronic HBV carriers during pregnancy and postpartum]. ZHONGHUA GAN ZANG BING ZA ZHI = ZHONGHUA GANZANGBING ZAZHI = CHINESE JOURNAL OF HEPATOLOGY 2019; 27:261-266. [PMID: 31082336 DOI: 10.3760/cma.j.issn.1007-3418.2019.04.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To observe the changes of liver function, virology and serology and the safety of drug withdrawal in pregnant women who are chronic hepatitis B virus (HBV) carriers. Methods: A prospective clinical cohort was established to enroll pregnant women who are chronic HBV carriers and they were divided into the nucleoside/nucleotide analogs (NAs) intervention group and the non-NAs intervention group according to patients' wishes. Liver function, HBV DNA and HBV serological markers were detected at gestation, postpartum 6 weeks, 12 weeks, 24 weeks, 36 weeks and 48 weeks. Results: 351 patients were enrolled, 320 in the NAs intervention group and 31 in the non-NAs intervention group. The proportion of postpartum hepatitis flares in both groups was higher than that in pregnancy (39.4% vs 12.5%, P < 0.001; 38.7% vs 3.2%, P = 0.001). Six weeks postpartum was the peak period of hepatitis flares, and 96.0% (121/126) of the hepatitis flares occurred within 24 weeks postpartum. At 6 weeks postpartum, there were 6 cases of alanine aminotransferase (ALT) ≥ 10 times upper limit of normal (ULN) in the NAs intervention group. The rate of the hepatitis flare after drug withdrawal was 16.7% (34/203). Conclusion: Regardless of the presence or absence of NAs intervention, pregnant women who are chronic HBV carriers have a certain proportion of hepatitis flares during pregnancy and postpartum, and the hepatitis flare even have a tendency to be severe. Therefore, drug withdrawal after delivery is not always safe, which requires close observation and classification. At 6 weeks postpartum, the incidence of hepatitis flares was high, and those who meet the treatment indications can get better therapeutic effects if given appropriate treatment. The vast majority (96%) of postpartum hepatitis flares occur within 24 weeks, so it is recommended to follow up to at least 24 weeks postpartum after discontinuation.
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Huang CJ, Zheng YY. Controlled Silanization Using Functional Silatrane for Thin and Homogeneous Antifouling Coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1662-1671. [PMID: 30086630 DOI: 10.1021/acs.langmuir.8b01981] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Organosilicons for surface modification are gaining prominence because of their easy and rapid preparation, high availability, and effective modification for varying interfacial properties. However, their implementation has been humbled by poor control of the packing density, thickness, and molecular structures due to the uncontrollable hydrolysis and condensation. This study reports for the first time new functional silatrane chemistry for the precision deposition of a thin and homogeneous zwitterionic coating. Sulfobetaine silatrane (SBSiT) has a tricyclic caged structure and a transannular N → Si dative bond, which shows excellent chemical stability in the presence of water and an acid-modulated hydrolysis characteristic. Results from X-ray photoelectron spectroscopy indicate the progressive deposition of SBSiT on a silicon surface. Characterization using atomic force microscopy and ellipsometry shows the uniform and thin SBSiT films on silicon surfaces. The superior antifouling properties of SBSiT coatings were demonstrated by resisting bacterial and protein adsorption. More importantly, the stable and complete formation of the SBSiT coatings allows an accurate interpretation of the interfacial phenomena for sensing and nanomaterial applications.
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Hou WH, Duan XK, Wei P, Xie JL, Zheng YY, Zhang YL, Zhou XG. [Ocular adnexal mantle cell lymphoma: a clinicopathological analysis of nine cases]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2019; 48:37-39. [PMID: 30641644 DOI: 10.3760/cma.j.issn.0529-5807.2019.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Zheng YY, Feng KX, Xia AB, Liu J, Tang CK, Zhou ZY, Xu DQ. Merging catalyst-free synthesis and iodine catalysis: one-pot synthesis of dihydrofuropyrimidines and spirodihydrofuropyrimidine pyrazolones. RSC Adv 2019; 9:9770-9776. [PMID: 35520709 PMCID: PMC9062170 DOI: 10.1039/c9ra01665a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 03/18/2019] [Indexed: 11/21/2022] Open
Abstract
A new and efficient one-pot strategy combining catalyst-free synthesis and iodine catalysis has been developed for the synthesis of dihydrofuropyrimidines and spirodihydrofuropyrimidine pyrazolones. This approach affords products in moderate to high yields (up to 96%) with excellent diastereoselectivities (up to >25 : 1 dr). The reaction is simple to carry out and is metal-free. A new and efficient one-pot strategy combining catalyst-free synthesis and iodine catalysis has been developed for the synthesis of dihydrofuropyrimidines and spirodihydrofuropyrimidine pyrazolones.![]()
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Hou WH, Wei P, Xie JL, Zheng YY, Zhang YL, Zhou XG. [Clinicopathologic features and prognosis of gastrointestinal mantle cell lymphoma]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2018; 47:763-768. [PMID: 30317731 DOI: 10.3760/cma.j.issn.0529-5807.2018.10.006] [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 investigate the clinicopathologic features and prognosis of gastrointestinal mantle cell lymphoma (GI-MCL). Methods: Clinical data of 38 GI-MCL patients diagnosed at Beijing Friendship Hospital from January 2002 to January 2016 were retrospectively reviewed morphologically and immunophenotypically. IgH/CCND1 gene fusion was assessed by fluorescent in situ hybridization (FISH). For comparison, 60 cases of non-GI-MCL were randomly selected to extract the differences inclinicopathological features and patient survival between the two groups. Results: Of 38 patients with GI-MCL, the median age was 62 years (range: 35-78 years, 23 males and 15 females), of which patients of 60 years of age or older accounted for 55.3%. Patients with clinical course of less than 6 months accounted for 81.1%(30/37). The main symptoms included abdominal pain, diarrhea, anorexia and hematochezia. Those with B symptoms accounted for 32.4%(12/37). The tumor most often involved lleocecal region (57.9%, 22/38), followed by rectum (36.8%, 14/38) and sigmoid colon (28.9%, 11/37), and the stomach accounted for 18.4%(14/38). Endoscopic polypoid lesions were found in 33 cases (86.8%, 33/38), of which 22 cases (66.7%, 22/33) were multiple. Five cases (13.2%, 5/38) presented with local protuberant neoplasm. According to Ann Arbor staging, 3 cases (7.9%, 3/38) were at stage Ⅰ, 4 cases (10.5%, 4/38) were at stage Ⅱ, and 31 cases (81.6%, 31/38) were at stage Ⅳ. The number of patients with tumor involvement of abdominal and retroperitoneal lymph nodes accounted for 45.7%(16/35), including 41.7%(15/36) involving the superficial lymph node, 17.1%(6/35) involving extranodal sites, and 23.5%(8/34) having splenomegaly. All of the 38 cases were classic MCL, and the tumor was composed of uniform lymphoid cells and effacing normal mucosal structure. All tumors were positive for CD20 and CD5. 97.4% (37/38) tumors were positive for cyclin D1, and 92.0% (23/25) tumors were positive for SOX11. FISH test was positive in 1 case of cyclin D1 negative tumor. Twenty-eight patients (73.7%) had a median follow-up of 25.0 months (range: 3-79 months). The 3-year survival rate for stage Ⅰ-Ⅱ and stage Ⅲ-Ⅳ of patients were 80.0% and 69.1%, respectively (P> 0.05). The 3-year survival rate for GI-MCL and non-GI-MCL patients were 71.7% and 72.5%, respectively (P>0.05). Single factor analysis showed that age of >60 years and splenomegaly were correlated with a worse overall survival rate (P<0.05). Conclusions: Gastrointestinal malaise is the most common presenting symptom in GI-MCL patients. GI-MCL more commonly involves colorectum with more frequent multiple polypoid lesions. Patients of age >60 years and with splenomegaly have poor prognosis. There is no difference in the prognosis between GI-MCL and non-GI-MCL patients.
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Zhang YL, Xie JL, Zheng YY, Wei P, Huang YH, Zheng XD, Teng XJ, Liu W, Zhou XG. [EB virus-positive T/NK lymphoproliferative diseases: an analysis of 156 patients]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2018; 47:407-411. [PMID: 29886582 DOI: 10.3760/cma.j.issn.0529-5807.2018.06.004] [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 investigate the clinicopathological features of EBV-positive T/NK cell lymphoproliferative diseases (EBV(+) T/NK-LPD). Methods: The clinical characteristics of 156 cases of EBV(+) T/NK-LPD were collected from August 2002 to March 2015 at Beijing Friendship Hospital, Capital Medical University. Immunohistochemical staining, EBER in situ hybridization and clonal analysis of TCR gene were performed. All patients were followed up. Results: There were 106 male and 50 female patients; patients' age ranged from 1 to 75 years (median 20 years). The course of the diseases before diagnosis ranged from 2 to 540 months (median 20 months). Fever was noted in 122 patients (78.2%), 108 patients had lymphadenopathy (69.2%), and 75 patients had hepatosplenomegaly (48.1%). Thirty-three cases were grade 1, 68 cases were grade 2, and 55 cases were grade 3. TCR gene arrangement analysis was performed in 45 cases, and 33 cases (73.3%) showed clonal rearrangement. The follow-up period ranged from 1-134 months, and 44 patients (28.2%) died. There was a trend of increased death rate associated with increasing grade (P>0.05). Conclusions: There are many types of EBV(+) T/NK-LPD, and they can be classified as systemic, relatively localized and localized. The prognosis should be based on a comprehensive analysis of pathology and clinical data. There is no significant correlation between morphological grade and mortality. An important goal of therapy is to prevent serious complications.
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Hou WH, Wei P, Xie JL, Zheng YY, Zhang YL, Zhou XG. [Clinicopathologic features and prognosis of mantle cell lymphoma: an analysis of 349 cases]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2018; 47:417-422. [PMID: 29886584 DOI: 10.3760/cma.j.issn.0529-5807.2018.06.006] [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 investigate clinicopathologic features and prognostic factors of mantle cell lymphoma(MCL). Methods: The clinical data of 349 MCL patients diagnosed at Beijing Friendship Hospital from January 2004 to January 2016 were retrospectively collected. Corresponding histological sections were reviewed. Additional studies included immunohistochemical staining using the MaxVision two-step method, IgH/CCND1 fusion gene detection by fluorescent in situ hybridization (FISH), and correlative statistical analysis. Results: Of 349 patients with MCL, the median patient age was 61 years (range: 25-83 years, M∶F=2.7∶1.0) and the age of 243 patients ranged from 51 to 70 years (69.6%). Those with B symptoms accounted for 22.4% (70/313). Most of the patients presented with superficial lymphadenopathy and the clinical stage Ⅲ-Ⅳ accounted for 76.1% (235/309). Extranodal involvement was seen in 47.9% (148/309), among which the gastrointestinal tract accounted for 31.8% (47/148) and splenic involvement accounted for 15.4% (47/305). Three hundred and nine (88.5%) cases were of classical type and 40 (11.5%) cases were of aggressive variant type, and all were composed of proliferating lymphoid cells. All the tumors were positive for CD20 and cyclin D1, and 98.6% (344/349) tumors were weakly positive or positive for CD5. FISH test was positive in 12 cases that were CD5 negative and with cyclin D1 partial expression.Two hundred and forty-three (69.6%) patients had a median follow-up of 26 months (range: 3-108 months). The 3- and 5-year overall survival rates for patients were 63.0% and 34.8%, respectively. Single factor analysis showed that age of >60 years, splenic involvement, aggressive variant type, incompletely overlapping type [Based on the degree of overlap ≥90% and <90% between the follicular dendritic cell (FDC) meshwork and tumor cells, the tumors were divided into the completely overlapped type and incompletely overlapped type] and Ki-67 index >40% had poor prognosis (P<0.05). Multiple factor Cox proportional risk regression analysis after removing the aggressive variant type showed that age, splenic involvement, the degree of overlap between the FDC meshwork and tumor cells and Ki-67 index were independent prognostic factors for overall survival rate of MCL patients (P<0.05). Conclusions: MCL is more commonly found among middle-aged and elderly men. Patient age, splenic involvement, degree of overlap between FDC meshwork and tumor cells and Ki-67 index are the independent prognostic indicators for MCL.
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Zhang XL, Feng KX, Xia AB, Zheng YY, Li C, Du XH, Xu DQ. Asymmetric Synthesis of 2,3-Dihydrofurans by One-Pot Michael Addition/I2
-Mediated Cyclization. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800575] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Wei P, Zhang YL, Xie JL, Zheng YY, Liu W, Zhou XG. [Clinicopathologic characteristics of Burkitt-like lymphoma with chromosome 11q aberration]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2018. [PMID: 29534356 DOI: 10.3760/cma.j.issn.0529-5807.2018.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze clinical, pathological, molecular and genetic characteristics of Burkitt-like lymphoma with chromosome 11q aberration. Methods: A case of Burkitt-like lymphoma with 11q aberration was presented at Beijing Friendship Hospital in November 2016 with detailed clinicopathological features, immunophenotypes, Epstein-Barr virus(EBV) status and molecular genetic characteristics. Results: The patient was a 38-year-old man presenting with the cervical lymphadenopathy. In morphology, the tumor had the similar characteristics of Burkitt lymphoma, including diffuse infiltration of medium to large lymphoid cells, and presence of"starry sky"phenomenon. Immunophenotypically, the tumor cells were positive for CD20, CD10, bcl-6, but negative for bcl-2. MUM-1 showed weak and patchy positivity. Ki-67 index was more than 95%. C-MYC expression was seen in about 50% of tumor cells. EBV in situ hybridization was negative. IgH and IgK genes were clonally rearranged.Fluorescence in situ hybrization detection using MYC break probe was negative but ATM gene amplification on chromosome 11q was detected. The patient did not receive any chemotherapy or radiotherapy and had not recurrence during the 10 months follow-up. Conclusion: Burkitt-like lymphoma with chromosome 11q aberration has similar clinical, morphological and immunological characteristics to classic Burkitt's lymphoma.
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Hou WH, Wei P, Xie JL, Zheng YY, Zhang YL, Zhou XG. [Clinicopathologic characteristics and prognositic indicators of tonsillar mantle cell lymphoma]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2018. [PMID: 29534352 DOI: 10.3760/cma.j.issn.0529-5807.2018.03.002] [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 investigate clinicopathological features and prognosis of tonsillar mantle cell lymphoma(TMCL). Methods: Clinical data of 25 patients with TMCL at Beijing Friendship Hospital, Capital Medical University from 2002 to 2016 were included. All the cases were reviewed microscopically. Various immunohistochemical stains were performed using the MaxVision two-step method. IgH/CCND1 gene fusion was detected by fluorescent in situ hybridization(FISH). Additionally, randomly selected 40 cases of non-tonsil MCL of the same period were compared. Results: Among all mantle cell lymphomas (MCL), TMCL accounted for 5.6%(25/449). The median age of the patients was 60 years(range: 44-82 years) with a M∶F ratio of 5.3 to 1.0. The main symptoms were sore throat and foreign body sensation and patients usually presented with enlargement or mass of tonsil. At the early stage of the disease, 18 cases(72.0%) were clinically misdiagnosed as tonsillitis. Lymph node involvement was present in 76.0%(19/25) of the patients. There were 4 cases(16.0%)with current splenic involvement, 11 cases(44.0%) with pharyngeal focal recidivism, and 3 cases(12.0%) with involvement of other non-lymphoid organs. Morphologically, tonsillar architectures were effaced at various degrees. Eighteen MCL cases showed classical type and 7 cases were blastoid variant. All tumors were positive for CD20 and cyclin D1. 92.0%(23/25) tumors showed weakly positive or positive expression for CD5. FISH test that IgH/CCND1 gene fusion was positive in two CD5 negative classical cases. 18 patients(72.0%) had a median follow-up time of 26 months(range: 6-81 months). The difference of survival rate between stage Ⅰ-Ⅱ and stage Ⅲ-Ⅳ patients was not statistically significant(P>0.05). Compared with NTMCL, TMCL was found to have higher proportion of stage Ⅰ-Ⅱ disease (χ(2)=12.789, P<0.01), lower the proportion of non-lymphatic organ involvement (χ(2)=8.125, P<0.01), and better prognosis (χ(2)=4.351, P=0.037). Conclusion: The incidence of TMCL is low and prone to be misdiagnosed as tonsillitis. Patients with TMCL are more likely at stage Ⅰ-Ⅱ at presentation and the prognosis is better than that of NTMCL.
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Tang CK, Feng KX, Xia AB, Li C, Zheng YY, Xu ZY, Xu DQ. Asymmetric synthesis of polysubstituted chiral chromans via an organocatalytic oxa-Michael-nitro-Michael domino reaction. RSC Adv 2018; 8:3095-3098. [PMID: 35541173 PMCID: PMC9077565 DOI: 10.1039/c7ra13525d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 12/28/2017] [Indexed: 11/21/2022] Open
Abstract
A catalytic asymmetric method for the synthesis of polysubstituted chromans via an oxa-Michael-nitro-Michael reaction has been developed. The squaramide-catalyzed domino reaction of 2-hydroxynitrostyrenes with trans-β-nitroolefins produced chiral chromans with excellent enantioselectivities (up to 99% ee), diastereoselectivities (up to >20 : 1 dr), and moderate to good yields (up to 82%). A catalytic asymmetric method for the synthesis of polysubstituted chromans via an oxa-Michael-nitro-Michael domino reaction of 2-hydroxynitrostyrenes with trans-β-nitroolefins has been accomplished.![]()
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Hou WH, Wei P, Xie JL, Zheng YY, Zhou XG. [Clinicopathologic characteristics and prognosis of neoplastic cell-rich mixed cellularity classic Hodgkin lymphoma]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2017; 46:708-713. [PMID: 29050074 DOI: 10.3760/cma.j.issn.0529-5807.2017.10.010] [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 investigate the clinicopathologic characteristics of neoplastic cell-rich mixed cellularity classical Hodgkin lymphoma(MCCHL-R) and to compare the prognosis with typical mixed cellularity classic Hodgkin lymphoma(MCCHL). Methods: Fifty-four patients with MCCHL-R(the tumor cells >10%) and 65 patients with typical MCCHL identified from 1 721 Hodgkin lymphomas were reviewed to compare the clinicopathological characteristics including morphologic and immunophenotypic features, EBV infection status, clinical therapy and overall survival. Results: The median age of the patients of MCCHL-R was 28.5 years(range: 9-76 years, male∶female=1.6∶1.0). Twenty-seven patients(50.0%) had B symptoms. Most patients had cervical lymph node involvement(81.5%, 44/54). Mediastinum and spleen involvement were seen in 69.2%(36/54) and 24.1%(13/54), respectively. Extranodal non-lymphoid organ involvement was seen in 41.3%(19/46) cases. Morphologically, lymph node architectures were effaced at various degree with large neoplastic cells of variable morphology, including Hodgkin/Reed-Sternberg(H/RS) cells and anaplastic large cells. There were abundant background heterogeneous admixtures of non-neoplastic inflammatory and accessory cells that were predominant mature small lymphocytes. All tumors were positive for CD30 and weakly positive for PAX5. Epstein-Barr encoded RNA(EBER)detectable by in situ hybridization was seen in 39.0% cases. Forty-six patients had a median follow-up time of 32.5 months(range: 5-128 months) and the 5-year survival rate for stage Ⅰ-Ⅱ and stage Ⅲ-Ⅳ patients were 91.7% and 50.1%, respectively(P<0.05). The 5-year survival rate for MCCHL-R was lower than typical MCCHL patients. Single factor analysis showed that age of >45 years, extranodal involvement and stage Ⅲ-Ⅳ were correlated with poorer 5-year survival rate(P<0.05). Multiple factors Cox proportional hazards regression showed that extranodal involvement was the independent prognostic factor(RR: 4.352, 95%CI: 1.122-16.879, P<0.05). Conclusions: MCCHL-R is more common in young people. The tumor has pathological features of classic Hodgkin lymphoma enriched with the tumor cells(>10%) and similar immunophenotype to classical Hodgkin lymphoma. Compared with typical MCCHL, extranodal disease is an independent prognostic factor of MCCHL-R.
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Chen Y, Zhou JL, Cheng L, Zheng YY, Xu J. Sediment and salinity effects on the bioaccumulation of sulfamethoxazole in zebrafish (Danio rerio). CHEMOSPHERE 2017; 180:467-475. [PMID: 28431384 DOI: 10.1016/j.chemosphere.2017.04.055] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 04/09/2017] [Accepted: 04/12/2017] [Indexed: 05/26/2023]
Abstract
The dynamic distribution of a widely used antibiotic sulfamethoxazole between water, sediment and aquatic organisms (zebrafish) was studied in microcosms. Sulfamethoxazole concentrations in water were gradually reduced, while in sediment and zebrafish gradually increased, suggesting active adsorption and bioaccumulation processes occurring. The presence of sediment particles and their interactions with water reduced the bioaccumulation of sulfamethoxazole in zebrafish by 13-28%. The sediment of smaller particle size with more organic carbon content and higher surface area, adsorbed sulfamethoxazole more extensively and decreased its bioaccumulation most significantly. The effect became more severe with increasing salinity in water due to the salting out of sulfamethoxazole, resulting in 24-33% reduction in bioaccumulation. At equilibrium, the distribution of sulfamethoxazole in different phases was quantified, with most sulfamethoxazole being associated with water (97.3%), followed by sedimentary phase (2.7%) and finally zebrafish (0.05%). The findings provided important data for further research into antibiotics fate and bio-uptake in aquatic organisms, and subsequent ecotoxicity.
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Zhou XG, Zhang YL, Xie JL, Huang YH, Zheng YY, Li WS, Chen H, Liu F, Pan HX, Wei P, Wang Z, Hu YC, Yang KY, Xiao HL, Wu MJ, Yin WH, Mei KY, Chen G, Yan XC, Meng G, Xu G, Li J, Tian SF, Zhu J, Song YQ, Zhang WJ. [The understanding of Epstein-Barr virus associated lymphoproliferative disorder]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2017; 45:817-821. [PMID: 28056294 DOI: 10.3760/cma.j.issn.0529-5807.2016.12.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
In recent years, there are increasing articles concerning Epstein-Barr virus associated lymphoproliferative disorder (EBV+ LPD), and the name of EBV+ LPD is used widely. However, the meaning of EBV+ LPD used is not the same, which triggered confusion of the understanding and obstacles of the communication. In order to solve this problem. Literature was reviewed with combination of our cases to clarify the concept of EBV+ LPD and to expound our understanding about it. In general, it is currently accepted that EBV+ LPD refers to a spectrum of lymphoid tissue diseases with EBV infection, including hyperplasia, borderline lesions, and neoplastic diseases. According to this concept, EBV+ LPD should not include infectious mononucleosis (IM) and severe acute EBV infection (EBV+ hemophagocytic lymphohistiocytosis, fatal IM, fulminant IM, fulminant T-cell LPD), and should not include the explicitly named EBV+ lymphomas (such as extranodal NK/T cell lymphoma, aggressive NK cell leukemia, Burkitt lymphoma, and Hodgkin lymphoma, etc.) either. EBV+ LPD should currently include: (1) EBV+ B cell-LPD: lymphomatoid granulomatosis, EBV + immunodeficiency related LPD, chronic active EBV infection-B cell type, senile EBV+ LPD, etc. (2) EBV+ T/NK cell-LPD: CAEBV-T/NK cell type, hydroa vacciniforme, hypersensitivity of mosquito bite, etc. In addition, EBV+ LPD is classified, based on the disease process, pathological and molecular data, as 3 grades: grade1, hyperplasia (polymorphic lesions with polyclonal cells); grade 2, borderline (polymorphic lesions with clonality); grade 3, neoplasm (monomorphic lesions with clonality). There are overlaps between EBV+ LPD and typical hyperplasia, as well as EBV+ LPD and typical lymphomas. However, the most important tasks are clinical vigilance, early identification of potential severe complications, and treating the patients in a timely manner to avoid serious complications, as well as the active treatment to save lives when the complications happened.
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Zheng YY, Zou LY, Fan L. [Indications and pregnancy outcomes of intrapartum cesarean section after the new partogram applied]. ZHONGHUA FU CHAN KE ZA ZHI 2016; 51:245-9. [PMID: 27116981 DOI: 10.3760/cma.j.issn.0529-567x.2016.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To study the changes of intrapartum cesarean rate, cesarean indications and pregnancy outcomes after the new partogram applied. METHODS Totally 3 290 pregnant women trying to vaginal delivery which were managed according to the new partogram in Beijing Obstetrics and Gynecology Hospital, Capital Medical University from August to October in 2014(new partogram group)were involved; 2 987 pregnancy women trying to vaginal delivery from May to July in 2014 which were managed according to the old partogram(old partogram group)were involved as control. The intrapartum cesarean rate, cesarean indications and the pregnancy outcomes between the two groups were analyzed. RESULTS The rate of intrapartum cesarean delivery was 8.50%(254/2 987)in old partogram group, and was significantly higher than that in new partogram group(6.2%, 204/3 290; P<0.01). Cesarean indications in old partogram group included 18 labor protraction(7.1%, 18/254), 82 labor arrest(32.3%, 82/254), 44 relative cephalopelvic disproportion(17.3%, 44/254), 80 fetal distress(31.5%, 80/254), 23 intrauterine infection(9.1%, 23/254)and 7 cesarean delivery on maternal request(CDMR; 2.8%, 7/254). Cesarean indications in new partogram group included 33 labor arrest(16.2%, 33/204), 71 relative cephalopelvic disproportion(34.8%, 71/204), 73 fetal distress(35.8%, 73/204)and 22 intrauterine infection(10.8%, 22/204), 5 CDMR(2.5%, 5/204). There were no significant differences in incidence of asphyxia neonatorum and puerperal morbidity(P> 0.05), but the incidence of postpartum hemorrhage in new partogram group was higher than the old partogram group[6.9%(14/204)versus 1.6%(4/254), P<0.05]. CONCLUSION After the new partogram applied, the rate of intrapartum cesarean delivery is significantly decreased, but the incidence of postpartum hemorrhage is increased.
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Yang XK, Zheng YY, Wu SX. [Study of BPPV precise manipulation treatment]. LIN CHUANG ER BI YAN HOU TOU JING WAI KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY, HEAD, AND NECK SURGERY 2016; 30:623-626. [PMID: 29871092 DOI: 10.13201/j.issn.1001-1781.2016.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Indexed: 06/08/2023]
Abstract
Objective:To explore the effect of the BPPV precision manipulation treatment. Method:With 3D SLICER software we segment structure such as semicircular canal, eye ball, orbital and ear rod from MRI or CT volume data of patients which underwent MRI or CT scaning of inner ear, for measuring the spatial direction of semicircular canals and building semicircular canal modules with standard space coordinate system and embedding into 3D PDF files. Result:With the slice that divide the semicircular canal equally as the semicircular canal plane and the eyeball as reference object to determine whether it is symmetric, it is not only intuitive but also reliable for measuring the angle between the posterior semicircular canal. 3D PDF is intuitive, rotation angle can be adjusted according to the individual differences in the process of manipulation treatment, to observe and demonstrate the theoretical reduction effect before the actual operation. Conclusion:By reconstruction the three-dimensional semicircular canal structure from the inner ear image data of patients and measurement of the semicircular canal space direction, it is of a certain significance for BPPV precision manipulation treatment.
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Hu AL, Sun BC, Cui TT, Zhang X, Sang JH, Zheng YY, Yang XH, Wang NL. [Evaluate the prevalence of trachoma in high risk area of China]. [ZHONGHUA YAN KE ZA ZHI] CHINESE JOURNAL OF OPHTHALMOLOGY 2016; 52:212-215. [PMID: 26979119 DOI: 10.3760/cma.j.issn.0412-4081.2016.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To determine the prevalence of trachoma in urban and rural area in China. To provide the data evidence for the strategies of eliminating trachoma in China. METHODS Survey was conducted in 13 suspect trachoma high prevalence provinces according to the World Health Organization trachoma grading system and Trachoma Rapid Assessment(TRA). RESULTS From 2004 to 2007, a total number of examined children which were younger than 10 years old was 59 630. The prevalence of TF was 0.94%. To sum up the data of 2004 and 2005, the prevalence of active trachoma was 1.71% for children.TT and CO was not reported. The results for subjects older than 50 years old showed that the prevalence of TT was 0.34%. We examined 26 857 adults in both 2004 and 2005.The prevalence of TF, TI, TS and CO was 0.03%,0.08%,0.88% and 0.05% respectively. CONCLUSIONS The prevalence of active trachoma of younger children was under 5%. However,the prevalence of TT of the adults was not reached the target.
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Zheng YY, Zhao G. Integrating Micro- or Nanoscale Encapsulation Technology with Vitreous Cryopreservation: A New Strategy to Improve Biopreservation. CRYO LETTERS 2016; 37:421-426. [PMID: 28072429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
UNLABELLED BACKGROUND: None-uniform distributions of temperatures, limited freezing and thawing rates, and thermal stresses are three main hindering factors for successful vitreous cryopreservation of mass volume of biosamples. Micro- and nanoscale encapsulation, owning the intrinsic features to avoid those limitations introduced by the traditional approaches, has been opened up a new way for effective and high-efficiency biopreservation. NEW APPROACH This short review article summarizes recent advances in cell encapsulation technology for biopreservation by manipulating cells and biological agents in micro- or nanoscale volume droplets and microgels, and discusses its promising applications for future vitreous cryopreservation.
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Noonan K, Tong KM, Laskin J, Zheng YY, Melosky B, Sun S, Murray N, Ho C. Evaluation of a 'Watch and Wait' Approach for Chemotherapy in Patients with Newly Diagnosed Advanced Non-small Cell Lung Cancer from a Diverse Community Population. Clin Oncol (R Coll Radiol) 2015; 27:505-13. [PMID: 26095646 DOI: 10.1016/j.clon.2015.05.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Revised: 05/08/2015] [Accepted: 05/27/2015] [Indexed: 12/20/2022]
Abstract
AIMS Systemic therapy in advanced non-small cell lung cancer (NSCLC) is the standard of care. The time of treatment administration has not been examined in the metastatic setting. A 'watch and wait' approach for the initiation of chemotherapy is sometimes used in clinical practice, either because of patient preference, presumed indolent disease behaviour, upfront radiotherapy or other interventions. We propose to evaluate the effect of a watch and wait approach on systemic treatment deliverability and patients' outcomes in a population-based study. MATERIALS AND METHODS A retrospective analysis of stage IIIB/IV NSCLC patients referred to medical oncology at the British Columbia Cancer Agency in 2009 was conducted. We defined the following: immediate chemotherapy (ICT) - chemotherapy ≤ 8 weeks from medical oncology consult; watch and wait chemotherapy (WWC) - initial observation with chemotherapy > 8 weeks from medical oncology consultation; watch and wait missed (WWM) - watch and wait patients who did not receive chemotherapy; best supportive care (BSC) - patients deemed chemotherapy ineligible. Statistical methods included Kaplan-Meier analysis, Log-rank tests and Cox proportional hazards modelling. RESULTS In total, 744 patients were seen by medical oncology; 355 (48%) received ICT, 173 (23%) watch and wait and 216 (29%) BSC. Of the 173 patients on a watch and wait approach, 42% missed an opportunity for chemotherapy due to poor performance status (50%), death (49%) and comorbidity (1%). The median overall survival was as follows: watch and wait 11.5 months, ICT 12.8 months and BSC 4.3 months (P < 0.0001). Controlling for confounding factors (age, gender, performance status), overall survival was longer in WWC (hazard ratio 0.73, confidence interval 0.81-1.07, P = 0.023) and lower in WWM (hazard ratio 1.68, 95% confidence interval 1.27-2.22, P < 0.0001), compared with ICT. CONCLUSIONS A significant proportion of watch and wait patients never receive systemic therapy, predominantly due to a decline in performance status. Patients in the ICT group were younger, had a better performance status and had non-squamous histology compared with the watch and wait group. The overall survival was longer in the patients who received ICT versus watch and wait. The watch and wait strategy is associated with a high risk of missing the opportunity for any chemotherapy and should be judiciously implemented only in carefully selected patients.
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Townley HE, Zheng Y, Goldsmith J, Zheng YY, Stratford MRL, Dobson PJ, Ahmed AA. A novel biosensor for quantitative monitoring of on-target activity of paclitaxel. NANOSCALE 2015; 7:1127-1135. [PMID: 25483994 DOI: 10.1039/c4nr01105h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This study describes a system for quantifying paclitaxel activity using the C-terminus of α-tubulin as a biomarker. Following stabilization of microtubules with paclitaxel, a specific detyrosination reaction occurs at the C-terminus of α-tubulin which could be used to assess efficacy. A fluorescence resonance energy transfer (FRET) based biosensor was synthesized comprising a short peptide that corresponded to the C-terminus of α-tubulin, a fluorophore (Abz), and a quencher (Dnp). The fluorophore added to the end of the peptide can be released upon enzymatic detyrosination. In addition, a single fluorophore-tagged peptide was also conjugated to mesoporous silica nanoparticles to examine the feasibility of combining the drug with the peptide biomarker. As a proof of concept, we found that the degree of peptide cleavage, and therefore enzymatic activity, was directly correlated with exogenous bovine carboxypeptidase (CPA) an enzyme that mimics endogenous detyrosination. In addition, we show that cell lysates obtained from paclitaxel-treated cancer cells competed with exogenous CPA for biosensor cleavage in a paclitaxel dose-dependent manner. Our work provides strong evidence for the feasibility of combining paclitaxel with a novel biosensor in a multi-load nanoparticle.
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Chen Y, Ma YT, Yang SJ, Yang YN, Fu ZY, Xie X, Li XM, Zheng YY. Relationship between the acylation-stimulating protein gene and coronary heart disease in the Xinjiang Uygur and Han populations of China. GENETICS AND MOLECULAR RESEARCH 2014; 13:2638-44. [PMID: 24782052 DOI: 10.4238/2014.april.8.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The association of the single nucleotide polymorphism 301T>C in the coding region of the acylation-stimulating protein (ASP) gene with coronary heart disease (CHD) was investigated in the Uygur (385 CHD patients and 483 control subjects) and Han (390 CHD patients and 439 control subjects) populations of China. The frequency of the CC and CT genotypes was significantly higher in patients with CHD compared to the control group (55.3 vs 46.2%, P = 0.001) in the Uygur population, but in the Han population, the frequency was significantly higher in the control group (51.7 vs 24.4%, P < 0.001). In addition, the C allele was significantly associated with CHD in the Uygur population (C allele: 33.8 vs 26.2%, T allele: 66.2 vs 73.8%; P = 0.004) and in the Han population (C allele: 14.5 vs 30.3%, T allele: 85.5 vs 69.7%; P < 0.001). The CC genotype was independently associated with increased risk of coronary artery disease when adjusted for other cardiovascular risk factors [odds ratio (OR) = 2.189, 95% confidence interval (CI) = 1.251-3.830, P = 0.001] in the Uygur population, but was a protective factor for CHD in the Han population (OR = 0.373, 95%CI = 0.187-0.745, P = 0.005). In conclusion, the 301T>C polymorphism of the ASP gene that influences the serum triglycerides level in the Uygur population, is associated with the development of CHD, and the CC genotype might be a risk factor of CHD.
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Zheng JX, Zeng Z, Zheng YY, Yin SJ, Zhang DY, Yu YY, Wang F. Role of hepatitis B virus base core and precore/core promoter mutations on hepatocellular carcinoma in untreated older genotype C Chinese patients. J Viral Hepat 2011; 18:e423-31. [PMID: 21914059 DOI: 10.1111/j.1365-2893.2011.01458.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The aim of the study was to investigate the prevalence of mutations of basal core promoter (BCP) and precore (PreC) region of hepatitis B virus (HBV) and their association with hepatocellular carcinoma. A total of 341 untreated older HBV patients were divided into three groups: chronic hepatitis B (CHB, 185), cirrhotic hepatocellular carcinoma (LC-HCC, 113) and non-cirrhotic hepatocellular carcinoma (non-LC-HCC, 43). HBV BCP and PreC mutations and genotypes were determined by direct sequencing. Using univariate analysis, age (≥ 45 years), single mutations including A1896 and A1899 and multiple mutations T1762/A1764 + A1896, T1762/A1764 + A1899 and T1762/A1764 + A1896 + A1899 were more frequently detected in LC-HCC and non-LC-HCC patients than in CHB patients. BCP T1762/A1764 mutations were highly detected in LC-HCC patients than in CHB patients. Multivariate logistic regression analysis (adjusted for age and gender) revealed that among HBeAg-positive patients, BCP T1762/A1764 mutations (OR, 5.975; P = 0.05), PreC A1899 mutation (OR, 4.180; P = 0.013) and multiple mutations T1762/A1764 + A1899 (OR, 6.408; P = 0.006) were independently associated with the development of LC-HCC; PreC A1899 mutation (OR, 7.347; P = 0.034) was also independently associated with the development of non-LC-HCC. On the other hand, among HBeAg-negative patients, PreC A1896 mutation (OR, 5.176; P = 0.002) and multiple mutations T1762/A1764 + A1896 (OR, 4.149; P = 0.007) were independently associated with the development of non-LC-HCC. These results indicated that older age (≥ 45 years) was associated with LC-HCC and non-LC-HCC development. BCP T1762/A1764 mutations and PreC A1899 mutation were associated with the LC-HCC development in HBeAg-positive patients. PreC A1896 mutation was associated with the non-LC-HCC development in HBeAg-negative patients.
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Hislop TG, Coldman AJ, Zheng YY, Ng VT, Labo T. Reliability of dietary information from surrogate respondents. Nutr Cancer 1992; 18:123-9. [PMID: 1437650 DOI: 10.1080/01635589209514212] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A self-administered food frequency questionnaire was included as part of a case-control study of breast cancer in 1980-82. In 1986-87, a second food frequency questionnaire was sent to surviving cases and husbands of deceased cases; 30 spouses (86% response rate) and 263 surviving cases (88% response rate) returned questionnaires. The dietary questions concerned consumption of specific food items by the case before diagnosis of breast cancer. Missing values were less common in the second questionnaire; there was no significant difference in missing values between surviving cases and spouses of deceased cases. Kappa statistics comparing responses in the first and second questionnaires were significantly lower for spouses of deceased cases than for surviving cases. Reported level of confidence by the husbands regarding knowledge about their wives' eating habits did not influence the kappa statistics or the frequencies of missing values. The lack of good agreement has important implications for the use of proxy interviews from husbands in retrospective dietary studies.
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Zheng YY, Yang ZR. [On pregnancies with previous uterine scar]. ZHONGHUA FU CHAN KE ZA ZHI 1989; 24:73-5, 123. [PMID: 2758908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Pregnancies with previous cesarean section and myomectomy uterine scar was studied in 161 cases. The rate of vaginal delivery was 9.4%; the rates of front wall placenta, adherent placenta, placenta previa and placenta percreta were 51.0%, 7.5%, 5.7% and 0.9% respectively. Postpartum hemorrhage increased in the later three groups. The rate of uterine rupture was 4.1% in the term pregnancies; puerperal morbidity 6.6%. All these pathological statuses bore on relation to the time elapse from uterine scar formation to recent pregnancy. There were no serious complications in 63 cases of induced early abortion and 31 late abortion. It is emphasised that the quality of the operation should be improved to provide good chances of success in trial labour later on and attention should be paid to abnormal implantation of the placenta as well as rupture of the uterine scars.
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Liang D, Shi YQ, Zheng YY. Limited immobilization in treatment of congenital hip dislocation. Chin Med J (Engl) 1988; 101:431-4. [PMID: 3146475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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