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Luo D, Zhang YB, Huang J, Chen LF, He LJ, Kuang GK, Qin J, Li QG, Wang GC, Li YL. One New Sesquiterpene from the Leaves of Rhodomyrtus tomentosa. CHEM LETT 2019. [DOI: 10.1246/cl.180746] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Zhang K, Wang L, Cai W, Chen LF, Wang D, Chen Y, Pan H, Wang L, Qian Y. Pyridinic and pyrrolic nitrogen-enriched carbon as a polysulfide blocker for high-performance lithium–sulfur batteries. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00052f] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pyridinic and pyrrolic nitrogen (16.95 atm%)-enriched carbon was simply prepared as an interlayer constructed in Li–S batteries.
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Chen LF, Yuan GL, Zhong ZD, Zou P, Li DJ, Bao Y, Ren HB, Meng L, Li WM. Efficacy and Safety of Generic Dasatinib as a Second-line Treatment for Patients with Chronic Myeloid Leukemia: a Multicenter Retrospective Study in Hubei Province, China. Curr Med Sci 2018; 38:1005-1011. [PMID: 30536062 DOI: 10.1007/s11596-018-1976-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/03/2018] [Indexed: 10/27/2022]
Abstract
Dasatinib is a second-generation tyrosine kinase inhibitor (TKI) and it could be used as a second-line treatment for patients with chronic myeloid leukemia (CML). Yinishu, a generic dasatinib made in China, was approved by the China Food and Drug Administration in 2013 and it costs much less than the patented dasatinib SPRYCEL. The present study aimed to examine the efficacy and safety of Yinishu as a second-line treatment for CML by comparing the baseline clinical characteristics, rates of adverse events and efficacy between Yinishu and SPRYCEL groups. The results showed that there were no significant differences in the rates of optimal response between Yinishu and SPRYCEL for patients who started second-line treatment because of treatment failure. For patients who started second-line treatment because of intolerance of first-line treatment, their levels of BCR-ABL1/ABL1 on the international scale (BCR-ABLIS) was maintained very low throughout the course of Yinishu treatment. Drug-related adverse events occurred with the same frequency in these two groups. It was confirmed that Yinishu was effective and safe as a secondline treatment for CML patients. Yinishu may be more suitable for patients who are economically unable to pay for the patented dasatinib SPRYCEL.
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Lin CJ, Chen SW, Chen CP, Lee CC, Town DD, Chen WL, Chen LF, Lee MS, Pan CW, Lin KC, Yeh TT. Higher male prevalence of chromosomal mosaicism detected by amniocentesis. Taiwan J Obstet Gynecol 2018; 57:370-373. [PMID: 29880167 DOI: 10.1016/j.tjog.2018.04.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/26/2018] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE To present the calculated frequencies, male to female sex-ratio, and modes of ascertainments in different levels of chromosomal mosaicism (CM) detected at amniocentesis. MATERIALS AND METHODS This's a 10-years retrospective study between January 2008 and December 2017 and there were 13,752 cases of amniocentesis performed in MacKay Memorial Hospital, Taipei, Taiwan. Eight hundred and thirty four cases of CM were collected in this study. We reviewed their types of chromosomal abnormalities of mosaicism, the modes of ascertainment (including: advanced maternal age, abnormal ultrasound findings, abnormal maternal serum screening result, and other reasons), maternal age, gestational age at amniocentesis, fetal gender, and perinatal findings. After amniocentesis, in situ culture was performed and the results of karyotype with CM were divided in to three levels. RESULTS In our sample of 13,752 amniocentesis, 834 cases with all levels of CM were collected in this study. Of them, there were 562 cases (4.09%) with level I mosaicism, 207 cases (1.51%) of level II mosaicism, and 65 cases (0.47%) of level III mosaicism (Table 1). In the group of advanced of maternal age (AMA), their calculated frequencies, 4.18% in level I, 1.46% in level II and 0.41% in level III, were very similar to those in total cases (p value = 0.206) without statistical significance. In the group of abnormal ultrasound findings, the calculated frequency was much higher in level III (0.87%), however, there was no statistical significance because of the small numbers of level III. In our cases of amniocentesis, the case numbers of male case (50.20%) is very similar to female (49.80%), and the male to female ratio was 1.01. But, we found more cases of male with CM (444 cases) than female (390 cases). The sex-ratio in different levels' calculated frequencies of CM showed similar in level I, and male prevalence was found in level II and III with statistical significance (p value = 0.022). The male prevalence also revealed in both numerical and structural abnormalities in level II and level III, but no difference in the cases of level I. CONCLUSION In conclusion, our observation showed a novel finding of higher male prevalence of CM in level II and III, and both in numerical and structural abnormalities. It's consistent with the theory of better survival in male embryo after partial self-correction of initial chromosomal aberrations, male-specific selection against chromosomal abnormalities.
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Chen CP, Lin SP, Chern SR, Chen SW, Lai ST, Chuang TY, Chen LF, Wang W. A 17-year-old boy with Klinefelter syndrome presenting Marfan syndrome-like clinical features of tall stature, scoliosis, arachnodactyly and subluxation of bilateral elbow joints. Taiwan J Obstet Gynecol 2018; 57:608-610. [PMID: 30122589 DOI: 10.1016/j.tjog.2018.06.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/08/2018] [Indexed: 10/28/2022] Open
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Lin QB, Dong J, Ke KY, Lin XQ, Kong JF, Xiong KG, Chen LF. [Validation of the diagnostic value of GALAD model in hepatocellular carcinoma patients]. ZHONGHUA GAN ZANG BING ZA ZHI = ZHONGHUA GANZANGBING ZAZHI = CHINESE JOURNAL OF HEPATOLOGY 2018; 26:621-623. [PMID: 30317796 DOI: 10.3760/cma.j.issn.1007-3418.2018.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Lu H, Chen L, Jiang S, Shen H. A rapidly progressive foot drop caused by the posttraumatic Intraneural ganglion cyst of the deep peroneal nerve. BMC Musculoskelet Disord 2018; 19:298. [PMID: 30121079 PMCID: PMC6098828 DOI: 10.1186/s12891-018-2229-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 08/14/2018] [Indexed: 02/06/2023] Open
Abstract
Background Intraneural ganglion cysts usually arise from the articular branch of the nerve. The relationship between intraneural ganglion cysts and trauma is not clear. Case presentation We report a case of a 62-year-old female with a rapidly progressive foot drop caused by a posttraumatic intraneural ganglion cyst of the deep peroneal nerve. We excised the ganglion cyst and performed nerve decompression. After the surgery, the patient had a functional recovery. Conclusions The concurrence of an intraneural ganglion cyst and trauma may increase damage to the nerve, although it is difficult to diagnosis before an operation. Early diagnosis and early proactive interventions would likely be associated with a good outcome.
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Chen CP, Chen CY, Chern SR, Wu PS, Chen SW, Lai ST, Chuang TY, Yang CW, Chen LF, Wang W. Prenatal diagnosis of a 1.6-Mb 4p16.3 interstitial microdeletion encompassing FGFRL1 and TACC3 associated with bilateral cleft lip and palate of Wolf-Hirschhorn syndrome facial dysmorphism and short long bones. Taiwan J Obstet Gynecol 2018; 56:821-826. [PMID: 29241927 DOI: 10.1016/j.tjog.2017.10.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2017] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE We present prenatal diagnosis of a 4p16.3 interstitial microdeletion associated with bilateral cleft lip and palate and short long bones on prenatal ultrasound, and we discuss the genotype-phenotype correlation. MATERIALS AND METHODS A 32-year-old woman underwent amniocentesis at 22 weeks of gestation because of bilateral cleft lip and palate and short limbs on prenatal ultrasound. Conventional cytogenetic analysis was performed on cultured amniocytes and parental bloods. Oligonucleotide array comparative genomic hybridization (aCGH) was performed on the DNAs extracted from uncultured amniocytes, parental bloods and umbilical cord. Metaphase fluorescence in situ hybridization (FISH) was performed on cultured amniocytes. RESULTS Amniocentesis revealed a karyotype of 46,XY. The parental karyotypes were normal. aCGH analysis on uncultured amniocytes revealed a 1.66-Mb interstitial microdeletion at 4p16.3 encompassing 23 Online Mendelian Inheritance of in Man (OMIM) genes including FGFRL1 and TACC3. The parents did not have such a deletion. The pregnancy was subsequently terminated, and a malformed fetus was delivered with typical Wolf-Hirschhorn syndrome (WHS) facial appearance and bilateral cleft lip and palate. aCGH analysis of the umbilical cord confirmed the prenatal diagnosis with a result of arr 4p16.3 (72,447-1,742,649) × 1.0 [GRCh37 (hg19)]. Metaphase FISH analysis of cultured amniocytes confirmed a 4p16.3 microdeletion. CONCLUSION Haploinsufficiency of FGFRL1 and TACC3 at 4p16.3 can be associated with bilateral cleft lip and palate of WHS facial dysmorphism and short long bones. Prenatal diagnosis of facial cleft with short long bones should raise a suspicion of chromosome microdeletion syndromes.
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Chen CP, Chen M, Wu CH, Lin CJ, Chern SR, Wu PS, Chen YN, Chen SW, Chang SP, Chen LF, Wang W. Prenatal diagnosis and molecular cytogenetic characterization of mosaicism for a small supernumerary marker chromosome derived from chromosome 21q11.2-q21.1 and a literature review. Taiwan J Obstet Gynecol 2018; 56:554-557. [PMID: 28805618 DOI: 10.1016/j.tjog.2017.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/02/2017] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE We present prenatal diagnosis and molecular cytogenetic characterization of mosaicism for a small supernumerary marker chromosome (sSMC) derived from chromosome 21q11.2-q21.1, and we review the literature of an sSMC(21) with a duplication of 21q11.2-q21.1. CASE REPORT A 40-year-old woman underwent amniocentesis at 17 weeks of gestation because of advanced maternal age. Amniocentesis revealed a karyotype of 47,XX,+mar [18]/46,XX [4]. The parental karyotypes were normal. Prenatal ultrasound findings were unremarkable. aCGH analysis of cultured amniocytes revealed a 2.855-Mb duplication of 21q11.2-q21.1 encompassing the genes of LIPI, ABCC13 and NRIP1. Metaphase fluorescence in situ hybridization analysis on cultured amniocytes revealed a result of 47,XX,+mar .ish der(13/21) (D13/21Z1+) [10]. Spectral karyotyping analysis determined the origin of chromosome 21 in the sSMC. A female fetus was delivered with no phenotypic features of Down syndrome and no structural abnormalities. We discuss the genotype-phenotype correlation of LIPI, ABCC13 and NRIP1, and review the literature of an sSMC(21) associated with dup(21)(q11.2q21.1). CONCLUSION aCGH is useful for identification of the nature and genetic component of a prenatally detected sSMC.
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Chen LF, Yang Y, Ma XD, Yu XG, Gui QP, Xu BN, Zhou DB. Optimizing the Extent of Resection and Minimizing the Morbidity in Insular High-Grade Glioma Surgery by High-Field Intraoperative MRI Guidance. Turk Neurosurg 2018; 27:696-706. [PMID: 27651342 DOI: 10.5137/1019-5149.jtn.18346-16.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AIM The result of surgical resection for insular high-grade glioma (HGG) is disappointing due to the complex anatomy of insula and aggressive growth of HGG. The use of intraoperative magnetic resonance imaging (iMRI) was reported to improve the results of glioma surgery. The authors aimed to evaluate the impact of high-field iMRI and functional neuronavigation on the surgical resection of insular HGG. MATERIAL AND METHODS Between July 2010 and July 2014, 51 insular HGG patients underwent operations guided by combined high-field iMRI and functional neuronavigation. Twenty-two insular HGG patients underwent conventional neuronavigation operations were assessed as the control group. Preoperative and postoperative tumor volumetric scan analysis, Karnofsky performance score (KPS) and follow-up results were reviewed retrospectively. RESULTS Residual tumor was detected by the iMRI in 42 patients, and residual tumor of 37 patients was further resected in the iMRI-assisted group. The median extent of resection (EOR) increased significantly from 79% (58%?100%) to [96% (86%? 100%), p < 0.001]. The median EOR of iMRI-assisted group [96% (86%?100%)] was significantly higher than that of conventional neuronavigation group [84% (69%?100%); p=0.031]. Mean residual tumor volume of iMRI-assisted group [0.6 (0.0-5.2) cm3] was significantly smaller than that of conventional neuronavigation group [3.8 (0.0-12.1) cm3; p=0.003]. KPS within 3 days after surgery reduced and KPS at 3 months after surgery improved for both groups. KPS of iMRI-assisted group [90(70-100)] was significantly higher than that of control group [80(60-100); p=0.021] at 3 months after surgery. The median progression-free survival (PFS) of iMRI-assisted group [18(9-42) months] was better than that of control group [15(3-32) months; p=0.010]. The median overall survival (OS) of iMRI-assisted group [28(14-49) months] was better than that of control group [18 (7-38) months; p=0.035]. CONCLUSION Combined high-field iMRI and functional neuronavigation optimize the extent of resection and minimize the morbidity in insular HGG surgery. Aggressive resection of insular HGG is predictive of improved OS and PFS.
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Abstract
RATIONALE Chondroid syringoma (CS) occurs mostly on the face and neck, and rarely occurs in the toe. Malignant CS is invasive, grows quickly, and has a high recurrence rate. The presence of a bilobed CS in 1 toe has never been reported in the literature. PATIENT CONCERNS A 72-year-old male patient presented with a mass in a third toe of his right foot. The mass had slowly grown in 2 years. He felt mild pain and the mass occupied most of the tip of the toe. DIAGNOSES Radiographs showed a large soft-tissue mass in the third toe of his right foot without any bone destruction. Ultrasonogram showed 2 partly fused hypoechoic masses within the lesion. The mass was therefore diagnosed as a benign CS. INTERVENTIONS We amputated the toe with the mass under local anesthesia. The postoperative pathohistological examinations confirmed that the lesion was a bipartite CS exhibiting active cellular proliferation. OUTCOMES Two years after surgery, there was no tumor recurrence. LESSONS CS can also present as multiple adjacent masses. Complete surgical resection and long-term follow-up are essential.
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Chen LF, Fan L, Fan J, Zhao LP, Zhang XY. Effect of iron overload on electrophysiology of slow reaction autorhythmic cells of left ventricular outflow tract in guinea pigs. ASIAN PAC J TROP MED 2018. [DOI: 10.4103/1995-7645.225024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Fan L, Chen LF, Fan J. Electrophysiological changes of autonomic cells in left ventricular outflow tract in guinea pigs with iron deficiency anemia complicated with chronic heart failure. ASIAN PAC J TROP MED 2017; 10:1197-1200. [PMID: 29268978 DOI: 10.1016/j.apjtm.2017.10.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 09/22/2017] [Accepted: 10/25/2017] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE To investigate the electrophysiological changes of autonomic cells in left ventricular outflow tract in guinea pigs with iron deficiency anemia complicated with chronic heart failure. METHODS Guinea pigs model of iron deficiency anemia complicated with chronic heart failure in 10 guinea pigs of the experimental group was made by feeding a low iron diet, pure water and subcutaneous injection of isoproterenol. The control group consisting of 11 guinea pigs was given normal food, normal water and injected with normal saline. The left ventricular outflow tract model specimen was also prepared. The standard microelectrode technique was used to observe electrophysiological changes of autonomic cells in the outflow tract of left ventricular heart failure complicated with iron deficiency anemia in guinea pig model. The indicators of observation were maximal diastolic potential, action potential amplitude, 0 phase maximal depolarization velocity, 4 phase automatic depolarization velocity, repolarization 50% and 90%, and spontaneous discharge frequency. RESULTS Compared with the control group, 4 phase automatic depolarization velocity, spontaneous discharge frequency and 0 phase maximal depolarization velocity decreased significantly (P < 0.01) and action potential amplitude reduced (P < 0.01) in model group. Moreover, repolarization 50% and 90% increased (P < 0.01). CONCLUSIONS There are electrophysiological abnormalities of the left ventricular outflow tract in guinea pigs with iron deficiency anemia complicated with heart failure.
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Lu H, Chen L, Chen Q, Shen H, Jiang S, Yu H. A Prospective Randomized Clinical Trial of Platelet-Rich Plasma Used in Surgery for de Quervain Tendinopathy. J BIOMATER TISS ENG 2017; 7:1344-1348. [DOI: 10.1166/jbt.2017.1703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
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Chen YP, Zhu WF, Chen LF, Lu JP, He TM, Fu WD, Xu CW, Chen G. [Clinicopathologic features and expression of OCT4 protein in testicular diffuse large B cell lymphoma]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2017; 46:383-387. [PMID: 28591984 DOI: 10.3760/cma.j.issn.0529-5807.2017.06.004] [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 evaluate the expression of OCT4 and SALL4 in testicular diffuse large B-cell lymphoma (DLBCL), and the utility of an immunohistochemical (IHC) panel of OCT4, SALL4 and CD20 in the differential diagnosis of DLBCL and GCT of the testis. Methods: Eighteen cases of testicular DLBCL were selected.IHC method was used to detect the protein expression of CD20, CD3, CD5, CD10, bcl-6, MUM1, Ki-67, bcl-2, c-MYC, OCT4 and SALL4. Results: Among the 18 cases, CD20 and PAX5 were strongly and diffusely expressed in all cases, while CD21, CD3, cyclinD1, SALL4, CD117 and PLAP were all negative. CD5, bcl-2 and c-myc were expressed in 3, 16 and 8 cases, respectively. Ki-67 proliferation index ranged from 40%-95%. Bcl-2 and c-MYC were co-expressed in seven cases. Four cases were GCB-DLBCL and the remaining 14 cases were non-GCB-DLBCL, according to Hans algorithm. Nuclear OCT4 expression was present in two cases, which demonstrated moderate expression in >50% of neoplastic cells. Univariate analysis showed that clinical stage, CD5 and OCT4 expression were relevant to prognosis. Multivariate Cox regression analysis further confirmed that clinical stage, CD5 and OCT4 were independent prognostic factors in patients with testicular DLBCL. Conclusions: Care should be exercised in using OCT4 as the sole marker of germ cell differentiation in the testis. The association of OCT4 and CD5, bcl-2 co-expression raises the question of whether OCT4 expression in DLBCL may reflect more aggressive biology.
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Chen LF, Fan HY, Zhang YP, Wei W, Lin JP, Wei DZ, Wang HL. Enhancement of ethyl ( S )-4-chloro-3-hydroxybutanoate production at high substrate concentration by in situ resin adsorption. J Biotechnol 2017; 251:68-75. [DOI: 10.1016/j.jbiotec.2017.04.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 04/09/2017] [Accepted: 04/15/2017] [Indexed: 10/19/2022]
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Wang WX, Zhu TH, Li KL, Chen LF, Lai FX, Fu Q. Molecular characterization, expression analysis and RNAi knock-down of elongation factor 1α and 1γ from Nilaparvata lugens and its yeast-like symbiont. BULLETIN OF ENTOMOLOGICAL RESEARCH 2017; 107:303-312. [PMID: 27809951 DOI: 10.1017/s0007485316000882] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
In the present paper, four cDNAs encoding the alpha and gamma subunits of elongation factor 1 (EF-1) were cloned and sequenced from Nilaparvata lugens, named NlEF-1α, NlEF-1γ, and its yeast-like symbiont (YLS), named YsEF-1α and YsEF-1γ, respectively. Comparisons with sequences from other species indicated a greater conservation for EF-1α than for EF-1γ. NlEF-1α has two identical copies. The deduced amino acid sequence homology of NlEF-1α and NlEF-1γ is 96 and 64%, respectively, compared with Homalodisca vitripennis and Locusta migratoria. The deduced amino acid sequence homology of YsEF-1α and YsEF-1γ is 96 and 74%, respectively, compared with Metarhizium anisopliae and Ophiocordyceps sinensis. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) analysis revealed that the expression level of NlEF-1α and NlEF-1γ mRNA in hemolymph, ovary, fat body and salivary glands were higher than the midgut and leg tissue. YsEF-1α and YsEF-1γ was highly expressed in fat body. The expression level of NlEF-1α was higher than that of NlEF-1γ. Through RNA interference (RNAi) of the two genes, the mortality of nymph reached 92.2% at the 11th day after treatment and the ovarian development was severely hindered. The RT-qPCR analysis verified the correlation between mortality, sterility and the down-regulation of the target genes. The expression and synthesis of vitellogenin (Vg) protein in insects injected with NlEF-1α and NlEF-1γ double-stranded RNA (dsRNA) was significantly lower than control groups. Attempts to knockdown the YsEF-1 genes in the YLS was unsuccessful. However, the phenotype of N. lugens injected with YsEF-1α dsRNA was the same as that injected with NlEF-1α dsRNA, possibly due to the high similarity (up to 71.9%) in the nucleotide sequences between NlEF-1α and YsEF-1α. We demonstrated that partial silencing of NlEF-1α and NlEF-1γ genes caused lethal and sterility effect on N. lugens. NlEF-1γ shares low identity with that of other insects and therefore it could be a potential target for RNAi-based pest management.
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Chen CP, Lin CJ, Chen YN, Chern SR, Chen SW, Lai ST, Wu PS, Chen LF, Wang W. Molecular genetic characterization of a prenatally detected de novo interstitial deletion of chromosome 2q (2q31.1-q32.1) encompassing HOXD13 , ZNF385B and ZNF804A associated with syndactyly and increased first-trimester nuchal translucency. Taiwan J Obstet Gynecol 2017; 56:398-401. [DOI: 10.1016/j.tjog.2017.04.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2017] [Indexed: 11/16/2022] Open
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Zhuang L, Chen LF, Zhang YB, Liu Z, Xiao XH, Tang W, Wang GC, Song WJ, Li YL, Li MM. Watsonianone A from Rhodomyrtus tomentosa Fruit Attenuates Respiratory-Syncytial-Virus-Induced Inflammation In Vitro. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:3481-3489. [PMID: 28436225 DOI: 10.1021/acs.jafc.7b00537] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Respiratory syncytial virus (RSV) is one of the most common respiratory pathogens. Immoderate inflammation plays a great role in causing RSV-induced diseases. In the present study, watsonianone A, isolated from the fruit of Rhodomyrtus tomentosa (Ait.) Hassk, was found to show a good inhibitory effect on RSV-induced NO production, with a half-maximal inhibitory concentration of 37.2 ± 1.6 μM. Enzyme-linked immunosorbent assay and fluorescence quantitative polymerase chain reaction analyses indicated that watsonianone A markedly reduced both mRNA and protein levels of tumor necrosis factor α, interleukin 6, and monocyte chemoattractant protein 1 in RSV-infected RAW264.7 cells. Mechanistically, watsonianone A inhibited nuclear factor κB (NF-κB) activation by suppressing IκBα phosphorylation. Further analysis revealed that watsonianone A activated the thioredoxin system and decreased intracellular reactive oxygen species (ROS) levels, which are closely associated with NF-κB activation in RSV-infected cells. These results reveal that watsonianone A can attenuate RSV-induced inflammation via the suppression of ROS-sensitive inflammatory signaling.
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Xiong KG, Ke KY, Chen LF, Wei DH, Lin XQ, Chen L. [Association between high expression of intrahepatic programmed death-1 and liver inflammation in patients with autoimmune hepatitis]. ZHONGHUA GAN ZANG BING ZA ZHI = ZHONGHUA GANZANGBING ZAZHI = CHINESE JOURNAL OF HEPATOLOGY 2017; 25:263-267. [PMID: 28494544 DOI: 10.3760/cma.j.issn.1007-3418.2017.04.006] [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 expression of programmed death-1 (PD-1) in liver tissue and its association with liver pathology in patients with autoimmune hepatitis (AIH). Methods: A total of 54 AIH patients (38 in the active stage and 16 in the remission stage) were enrolled, and 9 healthy volunteers were enrolled as control group. Immunohistochemistry combined with quantitative image analysis was used to measure the expression of PD-1 in liver tissue. The t-test, rank sum test, one-way analysis of variance, least significant difference t-test, Mann-Whitney U test, and Pearson relation analysis were used for statistical analysis of different types of data. Results: The AIH group had a significantly higher positive rate of PD-1 in liver tissue than the control group (13.57%±6.84% vs 2.22%±0.66%, P < 0.01), and the patients in the active stage of AIH had a significantly higher positive rate of PD-1 in liver tissue than those in the remission stage (16.53%±7.72% vs 6.56%±3.16%, P < 0.01). The positive rate of PD-1 in liver tissue was 6.56%±3.16% in G0 group, 14.33%±5.08% in G1-2 group, and 19.23%±5.41% in G3-4 group (P < 0.01), but there was no significant difference in the positive rate of PD-1 between S0, S1-2, and S3-4 groups (P > 0.05). In AIH patients, the positive rate of PD-1 in liver tissue was positively correlated with the levels of total bilirubin, alanine aminotransferase, aspartate aminotransferase, and IgG (r = 0.665, 0.721, 0.711, and 0.813, all P < 0.01). Conclusion: AIH patients have regulated PD-1 expression in liver tissue, which is closely associated with liver inflammation and is not associated with fibrosis degree, suggesting that PD-1 is involved in the development and progression of inflammation in AIH patients.
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Chen LF, Fan HY, Zhang YP, Wu K, Wang HL, Lin JP, Wei DZ. Development of a practical biocatalytic process for ( S )- N -Boc-3-hydroxypiperidine synthesis. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.03.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Chen LF, Chen XY, Yu XB. [Correlation of clinicopathologic features and driver gene mutation in non-small cell lung cancer]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2017; 45:221-5. [PMID: 27033383 DOI: 10.3760/cma.j.issn.0529-5807.2016.04.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To study the relationship between mutations of well-known driver genes and clinicopathologic characteristics of non-small cell lung cancers (NSCLC). METHODS Scorpions amplification refractory mutation system (scorpions ARMS) fluorescence quantitative PCR was performed to investigate 205 driver gene mutation status in NSCLC in correlation with clinicopathological characteristics of the patients. RESULTS Driver gene mutations were detected in 146 of 205 (71.2%) patients with NSCLC, including 81.7%(138/169) adenocarcinomas, in which mutations of nine genes were found: EGFR (63.3%, 107/169), KRAS (5.9%, 10/169), PIK3CA (4.1%, 7/169), ALK (4.1%, 7/169), ROS1 (3.0%, 5/169), RET (3.6%, 6/169), HER2 (1.8%, 3/169), NRAS (0.6%, 1/169) and BRAF (0.6%, 1/169). The frequencies of driver gene mutations were higher in adenocarcinomas, female patients and non-smokers (P<0.01, P=0.003, P<0.01, respectively). Driver gene mutation status showed no correlation with either the age or the clinical stage (P=0.281, P=0.490, respectively). However, EGFR mutations tended to occur in adenocarcinoma, female, non-smokers, and patients of ≥62 years of age (P<0.01, P<0.01, P=0.002, P=0.012, respectively). The frequency of EGFR mutation was positively correlated with the tumor histology of lepidic, acinar, papillary and micropapillary predominant growth patterns. There was no relationship between EGFR mutation and the clinical stage (P=0.237). The frequency of KRAS mutation was higher in solid predominant and invasive mucinous adenocarcinomas (P=0.015); that of PIK3CA mutation was higher in patients of ≥62 years of age, invasive mucinous adenocarcinoma and fetal adenocarcinoma (P=0.015, P=0.006, respectively). ALK, ROS1 or RET mutation positive NSCLC tended to occur in nonsmokers and have solid predominant tumors and invasive mucinous adenocarcinoma (P=0.012, P=0.017 respectively). The frequency of EML4-ALK mutation was higher in the early stage patients with solid predominant tumors and invasive mucinous adenocarcinomas (P=0.025, P=0.014, respectively); that of ROS1 rearrangement was higher in invasive mucinous adenocarcinomas (P=0.049). NRAS, BRAF and HER2 gene mutations were infrequent and their clinical significance remained to be elucidated. CONCLUSIONS The relationship between mutations of well-known driver genes and clinicopathological characteristics in patients with NSCLC has diversity, the rate of mutations is higher in non-smoking female patients with adenocarcinoma.
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Chen NH, Zhang YB, Li W, Li P, Chen LF, Li YL, Li GQ, Wang GC. Grandiflodines A and B, two novel diterpenoid alkaloids from Delphinium grandiflorum. RSC Adv 2017. [DOI: 10.1039/c7ra02869e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Two novel diterpenoid alkaloids, grandiflodines A and B (1 and 2), were isolated from Delphinium grandiflorum.
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Chen M, Chen LF, Li MM, Li NP, Cao JQ, Wang Y, Li YL, Wang L, Ye WC. Myrtucomvalones A–C, three unusual triketone–sesquiterpene adducts from the leaves of Myrtus communis ‘Variegata’. RSC Adv 2017. [DOI: 10.1039/c7ra02260c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The first examples of triketone–cubebane adducts (1 and 2) with an unusual skeleton were isolated from Myrtus communis ‘Variegata’.
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