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Zheng JW, Guo ZH, Jiang YQ, Yang JH, Xie JH, Sun Y, Tang QJ, Xiang D. A new human leukocyte antigen class I allele: HLA-A*11:125. ACTA ACUST UNITED AC 2014; 84:408-9. [PMID: 25040231 DOI: 10.1111/tan.12399] [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: 04/10/2014] [Revised: 05/02/2014] [Accepted: 05/26/2014] [Indexed: 11/30/2022]
Abstract
HLA-A*11:125 allele differs from A*11:01:01 by one nucleotide substitution at nt 140 from T to C.
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Li J, Li WQ, Zheng P, Wang R, Yu JQ, Yang JH, Yao Y. [Phenolic compounds in branches of Tamarix rasissima]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 2014; 39:2047-2050. [PMID: 25272840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
To study the chemical constituents of the branches of Tamarix rasissima, repeated silica gel column chromatography, Sephadex LH-20 chromatography and recrystallization were applied for chemical constituents isolation and purification. Ten phenolic compounds were isolated from the n-BuOH fraction and their structures were elucidated by physical properties and spectra analysis such as UV, ESI-MS and NMR as monodecarboxyellagic acid (1), ellagic acid (2), 3, 3'-di-O-methylellagic acid (3), 3, 3'-di-O-methylellagic acid-4-O-beta-D-glucopyranoside (4), 3, 3'-di-O-methylellagic acid-4'-O-alpha-D-arabinfuranoside (5), ferulic acid (6), isoferulic acid (7), caffeic acid (8), 4-O-acetyl-caffeic acid (9), and 4-methyl-1, 2-benzenediol (10). All compounds except for isoferulic acid were isolated firstly from this plant except for isoferulic acid, and compounds 5, 9 and 10 were obtained from Tamarix genus for the first time.
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Zhao XR, Nasier T, Cheng YY, Zhan JY, Yang JH. [Environmental geochemical baseline of heavy metals in soils of the Ili river basin and pollution evaluation]. HUAN JING KE XUE= HUANJING KEXUE 2014; 35:2392-2400. [PMID: 25158522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Environmental geochemical baseline models of Cu, Zn, Pb, As, Hg were established by standardized method in the ehernozem, chestnut soil, sierozem and saline soil from the Ili river valley region. The theoretical baseline values were calculated. Baseline factor pollution index evaluation method, environmental background value evaluation method and heavy metal cleanliness evaluation method were used to compare soil pollution degrees. The baseline factor pollution index evaluation showed that As pollution was the most prominent among the four typical types of soils within the river basin, with 7.14%, 9.76%, 7.50% of sampling points in chernozem, chestnut soil and sierozem reached the heavy pollution, respectively. 7.32% of sampling points of chestnut soil reached the permitted heavy metal Pb pollution index in the chestnut soil. The variation extent of As and Pb was the largest, indicating large human disturbance. Environmental background value evaluation showed that As was the main pollution element, followed by Cu, Zn and Pb. Heavy metal cleanliness evaluation showed that Cu, Zn and Pb were better than cleanliness level 2 and Hg was the of cleanliness level 1 in all four types of soils. As showed moderate pollution in sierozem, and it was of cleanliness level 2 or better in chernozem, chestnut soil and saline-alkali soil. Comparing the three evaluation systems, the baseline factor pollution index evaluation more comprehensively reflected the geochemical migration characteristics of elements and the soil formation processes, and the pollution assessment could be specific to the sampling points. The environmental background value evaluation neglected the natural migration of heavy metals and the deposition process in the soil since it was established on the regional background values. The main purpose of the heavy metal cleanliness evaluation was to evaluate the safety degree of soil environment.
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Baeg MK, Park JM, Ko SH, Min GJ, Lee KJ, Yang JH, Lim CH, Kim SW, Choi MG. Seizures due to hyponatremia following polyethylene glycol preparation; a report of two cases. Endoscopy 2014; 45 Suppl 2 UCTN:E269-70. [PMID: 24008460 DOI: 10.1055/s-0033-1344568] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Yang JH, Zhao ZH, Hou JF, Zhou ZL, Deng YF, Dai JJ. Expression of TRPV6 and CaBP-D28k in the egg shell gland (uterus) during the oviposition cycle of the laying hen. Br Poult Sci 2014; 54:398-406. [PMID: 23796121 DOI: 10.1080/00071668.2013.791385] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
1. The aim of this study was to investigate the localisation of the transient receptor potential vanilloid channel type 6 (TRPV6) in egg shell gland (ESG) and examine the dynamic expression of TRPV6 and Calbindin-d28k (CaBP-D28k), as well as the changes in concentration of total calcium (Ca), total inorganic phosphorus (P), alkaline phosphatase (ALP), parathyroid hormone (PTH) and calcitonin (CT) in plasma during the oviposition cycle. 2. The plasma ALP activity was notably increased at 8 h. In addition, plasma CT was highest at 0 h and significantly lower at 8 h. The change of plasma PTH concentration increased slightly post-oviposition and reached a maximum at 16 h. 3. Immunohistochemical analysis indicated that TRPV6 was strongly localised to the apical luminal epithelium of the mucosa. The mRNA levels of TRPV6 and CaBP-D28k in the ESG remained very low from 0 to 4.5 h, but were significantly increased at 16 h. Furthermore, Western blotting analysis showed that the expression of TRPV6 and CaBP-D28k also reached a maximum at 16 h and was different from the concentration of CaBP-D28k. 4. In conclusion, the epithelial Ca(2+) channel TRPV6 is strongly expressed in the epithelial cells of the eggshell gland, and the increase of TRPV6 and CaBP-D28k mRNA and protein expression during eggshell formation suggests that active Ca(2+) transcellular transport exerts significant effects in delivering active calcium in the ESG.
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Yang JH, Guo ZH, Jiang YQ, Zheng JW, Tang QJ, Xie JH, Sun Y, Xiang D. Identification of a novelHLA-A*02allele,HLA-A*02:06:13, in a Chinese individual. ACTA ACUST UNITED AC 2013; 83:52-3. [DOI: 10.1111/tan.12241] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Accepted: 10/13/2013] [Indexed: 11/28/2022]
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Zhang Y, Yang JH. Activation of the PI3K/Akt pathway by oxidative stress mediates high glucose-induced increase of adipogenic differentiation in primary rat osteoblasts. J Cell Biochem 2013; 114:2595-602. [DOI: 10.1002/jcb.24607] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Accepted: 05/31/2013] [Indexed: 11/12/2022]
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83
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Yang JH, KIM JB, Jung SH, Choo SJ, Lee JW, Chung CH. Short term and intermediate results of hybrid procedure in high risk patients needing aortic arch repair. J Cardiothorac Surg 2013. [PMCID: PMC3844641 DOI: 10.1186/1749-8090-8-s1-o45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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84
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Shan CY, Yang JH, Kong Y, Wang XY, Zheng MY, Xu YG, Wang Y, Ren HZ, Chang BC, Chen LM. Alteration of the intestinal barrier and GLP2 secretion in Berberine-treated type 2 diabetic rats. J Endocrinol 2013; 218:255-62. [PMID: 23757509 DOI: 10.1530/joe-13-0184] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
For centuries, Berberine has been used in the treatment of enteritis in China, and it is also known to have anti-hyperglycemic effects in type 2 diabetic patients. However, as Berberine is insoluble and rarely absorbed in gastrointestinal tract, the mechanism by which it works is unclear. We hypothesized that it may act locally by ameliorating intestinal barrier abnormalities and endotoxemia. A high-fat diet combined with low-dose streptozotocin was used to induce type 2 diabetes in male Sprague Dawley rats. Berberine (100 mg/kg) was administered by lavage to diabetic rats for 2 weeks and saline was given to controls. Hyperinsulinemia and insulin resistance improved in the Berberine group, although there was no significant decrease in blood glucose. Berberine treatment also led to a notable restoration of intestinal villi/mucosa structure and less infiltration of inflammatory cells, along with a decrease in plasma lipopolysaccharide (LPS) level. Tight junction protein zonula occludens 1 (ZO1) was also decreased in diabetic rats but was restored by Berberine treatment. Glutamine-induced glucagon-like peptide 2 (GLP2) secretion from ileal tissue decreased dramatically in the diabetic group but was restored by Berberine treatment. Fasting insulin, insulin resistance index, plasma LPS level, and ZO1 expression were significantly correlated with GLP2 level. In type 2 diabetic rats, Berberine treatment not only augments GLP2 secretion and improves diabetes but is also effective in repairing the damaged intestinal mucosa, restoring intestinal permeability, and improving endotoxemia. Whether these effects are mechanistically related will require further studies, but they certainly support the hypothesis that Berberine acts via modulation of intestinal function.
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Yang JH, Kim KH, Kim TN. Trifurcated hepatic duct with low union complicated by choledocholithiasis. Endoscopy 2013; 45 Suppl 2 UCTN:E74. [PMID: 23526526 DOI: 10.1055/s-0032-1326107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
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86
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Yang JH, Yang XF, Hu LQ, Zang Q, Han XF, Shao CQ, Sun TF, Chen H, Wang TF, Li FJ, Hu AL. Development of high-speed and wide-angle visible observation diagnostics on Experimental Advanced Superconducting Tokamak using catadioptric optics. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2013; 84:085102. [PMID: 24007102 DOI: 10.1063/1.4817204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A new wide-angle endoscope for visible light observation on the Experimental Advanced Superconducting Tokamak (EAST) has been recently developed. The head section of the optical system is based on a mirror reflection design that is similar to the International Thermonuclear Experimental Reactor-like wide-angle observation diagnostic on the Joint European Torus. However, the optical system design has been simplified and improved. As a result, the global transmittance of the system is as high as 79.6% in the wavelength range from 380 to 780 nm, and the spatial resolution is <5 mm for the full depth of field (4000 mm). The optical system also has a large relative aperture (1:2.4) and can be applied in high-speed camera diagnostics. As an important diagnostic tool, the optical system has been installed on the HT-7 (Hefei Tokamak-7) for its final experimental campaign, and the experiments confirmed that it can be applied to the investigation of transient processes in plasma, such as ELMy eruptions in H-mode, on EAST.
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Yang JH, Du X, He F, Zhang HB, Li XN, Su J, Li Y, Pu JX, Sun HD. Bioactive abietane and ent-kaurane diterpenoids from Isodon tenuifolius. JOURNAL OF NATURAL PRODUCTS 2013; 76:256-264. [PMID: 23327668 DOI: 10.1021/np300772e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Three new abietane diterpenoids, isoabietenins A-C (1-3), and 13 new ent-kauranoids, tenuifolins A-M (4-16), along with four known compounds (17-20), were isolated from the aerial parts of Isodon tenuifolius. The structures of the new metabolites were established on the basis of detailed spectroscopic analysis. The absolute configurations of 1, 15, and 16 were confirmed by single-crystal X-ray diffraction. Selected compounds were evaluated for their cytotoxicity against a small panel of human tumor cell lines, and some compounds showed inhibitory effects. Furthermore, several isolates exhibited inhibitory activity against nitric oxide production in LPS-activated RAW264.7 macrophages.
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Liu X, Zhan R, Wang WG, Du X, Li XN, Yang JH, Zhang P, Li Y, Pu JX, Wu JZ, Sun HD. New ent-Abietane and ent-Kaurane Diterpenoids from Isodon rubescens. Chem Pharm Bull (Tokyo) 2013; 61:90-5. [PMID: 23302591 DOI: 10.1248/cpb.c12-00697] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Park YH, Im SA, Cho EY, Ahn JH, Woo SY, Kim S, Keam B, Lee JE, Han W, Nam SJ, Park IA, Noh DY, Yang JH, Ahn JS, Im YH. Abstract P2-05-20: Validation and comparison of CS-IHC4 score with a nomogram based on Ki67 index, Adjuvant! Online, and St. Gallen risk stratification to predict recurrence in early Hormone Receptor (HR)-positive breast cancers. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p2-05-20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Recently, the information in the IHC score was reported to be similar to that in the 21-gene Genomic Health recurrence score (GHI-RS). The aim of this study is to develop a nomogram based on Ki67 index to predict recurrence and to validate the nomogram by comparison with CS-IHC4 as well as Adjuvant! Online and St. Galen risk stratification. In addition, we validated our nomogram with external cohort.
Methods: We retrospectively analyzed the clinicopathologic characteristics and outcomes of 1,070 postoperative HR-positive breast cancer patients between 2004 and 2007 at the Samsung Medical Center to determine recurrence-free survival (RFS). We constructed nomogram using Cox proportional hazard model and validated externally in a cohort of 1,028 at Seoul National University Hospital. A prognostic model that used classical variables, Adjuvant! Online, St. Gallen risk stratification, and the four IHC markers (IHC4 score) were created and assessed in our cohort by LR-χ2 test using the bootstrapping method.
Results: Nomogram showed an area under the receiver operating characteristic curve (AUC) of 0.70 (95% CI, 0.62–0.75) in the training set. The validation set showed a good discrimination with an AUC of 0.65 (95% CI, 0.58–0.72). In LR-χ2 test, the nomogram score was found to be more informative than the IHC4 with CS (LR-χ2 4.0539 [df1], 95% CI; 0.1038–8.004 for CS-IHC4 + nomogram score vs. CS-IHC4).
Prognostic significance was more prominent in N1 diseases than in the others (LR-χ2 4.199, 95% CI; 1.496–6.902 for CS-IHC4 + nomogram score vs. CS-IHC4).
However, Adjuvant! Online and St. Galen risk stratification did not show any definitive additional prognostic value.
Conclusions: We developed and validated a nomogram based on Ki67 index in external patients' cohort. It was compared with CS-IHC4 in our patients' cohort in early HR-positive breast cancers. This study implicates the amount of prognostic information contained in the nomogram is superior to that in the CS-IHC4 score.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P2-05-20.
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Yang JH, Li ZL, Lu XZ, Whangbo MH, Wei SH, Gong XG, Xiang HJ. Strong Dzyaloshinskii-Moriya interaction and origin of ferroelectricity in Cu2OSeO3. PHYSICAL REVIEW LETTERS 2012; 109:107203. [PMID: 23005322 DOI: 10.1103/physrevlett.109.107203] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Indexed: 06/01/2023]
Abstract
By performing density functional calculations, we investigate the origin of the Skyrmion state and ferroelectricity in Cu2OSeO3. We find that the Dzyaloshinskii-Moriya interactions between the two different kinds of Cu ions are extremely strong and induce the helical ground state and the Skyrmion state in the absence and presence of a magnetic field, respectively. On the basis of the general model for the spin-order induced polarization, we propose that the ferroelectric polarization of Cu2OSeO3 in the collinear ferrimagnetic state arises from an unusual mechanism, i.e., the single-spin-site contribution due to the spin-orbit coupling.
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Kim SY, Park SY, Lim JH, Lee BY, Yang JH, Ryu HM. Hypoxia inducible factor-1α gene polymorphisms in Korean patients with pre-eclampsia. J Endocrinol Invest 2012; 35:670-5. [PMID: 21979130 DOI: 10.3275/8009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND Placental hypoxia has been implicated in the pathogenesis of pre-eclampsia. Hypoxia inducible factor-1α (HIF-1α) is activated by low oxygen tension and is a key regulator of genes involved in the cellular responses to hypoxia. AIM We determined whether maternal blood c.1722C>T (Pro582Ser) and c.1790G>A (Ala588Thr) polymorphisms in exon 12 of the HIF-1α gene are associated with pre-eclampsia. SUBJECTS AND METHODS Subjects included 163 pre-eclamptic patients (48 mild and 115 severe preeclampsia) and 194 healthy pregnant women. Polymorphisms were genotyped by PCR and direct DNA sequencing. RESULTS There were no significant differences in genotype or allele frequencies of the c.1772C>T and c.1790G>A polymorphisms of the HIF-1α gene among the study groups. Moreover, subgroup analysis according to pre-eclampsia severity revealed no significant differences in genotype or allele frequencies of the HIF-1α c.1772C>T and c.1790G>A polymorphism in mild pre-eclamptic compared to severe pre-eclamptic group. In addition, there were no significant differences in the frequencies of 3 haplotypes (C-G,-G, T-G, and C-A) between the control and pre-eclamptic groups. CONCLUSIONS Our results suggest that the HIF-1α gene polymorphisms are not associated with the development of pre-eclampsia in the studied Korean women population.
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Wang Y, Liu Q, Lü H, Long S, Wang W, Li Y, Zhang S, Lian W, Yang J, Liu M. Improving the electrical performance of resistive switching memory using doping technology. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s11434-011-4930-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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93
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Zou J, Yang LB, Jiang J, Diao YY, Li XN, Huang J, Yang JH, Li HL, Xiao WL, Du X, Shang SZ, Pu JX, Sun HD. Lanostane triterpenoids from the stems of Schisandra glaucescens. PLANTA MEDICA 2012; 78:472-479. [PMID: 22281717 DOI: 10.1055/s-0031-1298214] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Ten new triterpenoids, schiglausins A-J (1-10), as well as four known compounds, were isolated from the stems of Schisandra glaucescens. Their structures were elucidated on the basis of spectroscopic methods, including extensive NMR spectra and CD experiment. Compound 8 was determined to be a norlanostane triterpenoid. The crystal structure of compound 1 has been determined using single-crystal X-ray analysis while its absolute configuration was assigned on the basis of the CD spectrum. All isolates were tested for their FXR agonistic and antagonistic effects.
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Yang JH, Zhu H. Vibrational resonance in Duffing systems with fractional-order damping. CHAOS (WOODBURY, N.Y.) 2012; 22:013112. [PMID: 22462988 DOI: 10.1063/1.3678788] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The phenomenon of vibrational resonance (VR) is investigated in over- and under-damped Duffing systems with fractional-order damping. It is found that the factional-order damping can induce change in the number of the steady stable states and then lead to single- or double-resonance behavior. Compared with vibrational resonance in the ordinary systems, the following new results are found in the fractional-order systems. (1) In the overdamped system with double-well potential and ordinary damping, there is only one kind of single-resonance, whereas there are double-resonance and two kinds of single-resonance for the case of fractional-order damping. The necessary condition for these new resonance behaviors is the value of the fractional-order satisfies α > 1. (2) In the overdamped system with single-well potential and ordinary damping, there is no resonance, whereas there is a single-resonance for the case of fractional-order damping. The necessary condition for the new result is α > 1. (3) In the underdamped system with double-well potential and ordinary damping, there are double-resonance and one kind of single-resonance, whereas there are double-resonance and two kinds of single-resonance for the case of fractional-order damping. The necessary condition for the new single-resonance is α < 1. (4) In the underdamped system with single-well potential, there is at most a single-resonance existing for both the cases of ordinary and fractional-order damping. In the underdamped systems, varying the value of the fractional-order is equivalent to change the damping parameter for some cases.
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Dong K, Pu JX, Zhang HY, Du X, Li XN, Zou J, Yang JH, Zhao W, Tang XC, Sun HD. Dibenzocyclooctadiene lignans from Kadsura polysperma and their antineurodegenerative activities. JOURNAL OF NATURAL PRODUCTS 2012; 75:249-256. [PMID: 22329624 DOI: 10.1021/np200937h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Eleven new dibenzocyclooctadiene lignans, polysperlignans A-K (1-11), and eight known analogues (12-19) were isolated from the stems of Kadsura polysperma. Their structures and absolute configurations were established using a combination of MS, NMR, CD, and single-crystal X-ray diffraction techniques. Selected compounds were evaluated for activity against β-amyloid- or hydrogen peroxide-induced neurotoxicity on PC12 cells, and 1, 2, 4, 5, 13, and 16 showed statistically significant neuroprotective effects in these in vitro assays.
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Yang JH, Hou JF, Farquharson C, Zhou ZL, Deng YF, Wang L, Yu Y. Localisation and expression of TRPV6 in all intestinal segments and kidney of laying hens. Br Poult Sci 2012; 52:507-16. [PMID: 21919579 DOI: 10.1080/00071668.2011.596994] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
1. The aim of this study was to investigate the localisation and expression of the epithelial Ca2+ channel TRPV6 (transient receptor potential vanilloid channel type 6) in different intestinal segments and kidney of laying hens during peak lay. 2. Immunohistochemical analysis of the intestine indicated that TRPV6 was localised to the brush-border membranes of the duodenum, jejunum, ileum, caecum, and rectum. Expression was weaker in the rectum, and little or no expression was found in crypt and goblet cells. In addition, TRPV6 mRNA was quantified amongst different intestinal segments, and expression was highest in the duodenum and jejunum. Furthermore, Western blotting indicated that the duodenum expressed the greatest amount of TRPV6 and the rectum the least with the other segments expressing intermediate levels. 3. In the kidney, distinct immunopositive staining for TRPV6 was detected at the apical domain of the distal convoluted tubules (DCT) and medullary connecting tubules (CNT). Interestingly, distribution of TRPV6 extended to the proximal convoluted tubules (PCT). Furthermore, the kidney expressed lower TRPV6 mRNA and protein levels compared with that in the duodenum. 4. In conclusion, the epithelial Ca2+ channel TRPV6 is strongly expressed in the apical cells of the entire intestine and the renal tubules, suggesting that active Ca2+ transcellular transport plays a crucial role in dietary calcium (re)absorption in laying hens.
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Park YH, Cho EY, Lee JE, Nam SJ, Yang JH, Ahn JS, Im YH. P5-01-11: Small Node-Negative (T1b-cN0) Invasive Hormone Receptor (HR)-Positive Breast Cancers: Is There a Population Which Might Have Benefit from Adjuvant Chemotherapy? Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p5-01-11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
It has been widely accepted that small and node-negative breast cancers have an excellent prognosis and do not generally have clinical benefit from adjuvant chemotherapy. Recently, the role of adjuvant chemotherapy for small node negative breast cancers has been justified in some high-risk patients, which include HER2−positive and triple negative breast cancers. However, the question has been raised as to whether there are some patients who might have benefit from adjuvant chemotherapy in small node-negative HR-positive breast cancers. According to the current 2011 NCCN guideline, 21-gene RT-PCR assay can be considered for tumor size of more than 0.5 cm in HR-positive, HER2−negative cancers. In cases of high recurrence score (≥ 31), adjuvant chemotherapy in addition to endocrine therapy is recommended as category 2B. Because gene array cannot routinely be used in clinical practice and has not been validated in prospective randomized trials and the usefulness of it still needs to be defined, it would be better if there were valuable markers to determine risk for relapse in this setting. We hypothesized that there could be a population who might have clinical benefit from adjuvant chemotherapy in this small node-negative HR-positive tumors.
Patients and Methods
We retrospectively analyzed the clinicopathologic characteristics and outcomes of 538 postoperative HR-positive (ER-positive and/or PgR-positive) T1b-cN0 breast cancer patients between 2004 and 2007 at the Samsung Medical Center. We performed Cox regression multivariate analysis for relapse using variables from univariate analysis by log-rank test for relapse.
Results: The median age at diagnosis was 46 years (range, 22–79). During the median 60.5 months of follow-up, the 5-year recurrence rate was 5.2%. Anthracycline-based adjuvant chemotherapy was administered to 44.8% of the patients. Adjuvant endocrine and radiation treatment were administered to 94.6% and 63.7% of the patients. There were significant differences according to histologic grade (HG), Ki67 index, and age of less than 35 years in univariate analyses regarding RFS (p=0.003, p<0.0001, and p=0.003, respectively by log-rank test). There was no significant difference according to tumor size of subcentimeter (< 1cm) (p=0.826). In Cox regression multivariate analysis, high Ki67 index and young age of less than 35 years were identified as independent risk factors for relapse (p<0.0001 for Ki67 index and 0.015 for young age). The high risk patients (n=24, 4.5%) who have high Ki67 index (more than 75%, 4+) or young age of less than 35 and more than 50% of Ki67 index showed better RFS with statistical significance for anthracycline-containing adjuvant chemotherapy (p=0.029).
Conclusion: A patients’ population may exist who have clinical benefit from adjuvant chemotherapy in T1b-cN0 HR-positive breast cancer patients. Ki67 index and age are useful as valuable surrogate markers to predict recurrence and to have benefit from adjuvant chemotherapy in this population.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P5-01-11.
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Park YH, Cho EY, Lee JE, Nam SJ, Yang JH, Ahn JS, Im YH. P1-12-15: Adjuvant Trastuzumab Effect on HER2−Positive Breast Cancers According to Hormonal Receptor (HR) Status: Crosstalk between ER and EGFR/HER2 Pathway May Prevent Trastuzumab from Improving Outcomes in HER2−Positive and HR-Positive Breast Cancers. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p1-12-15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Crosstalk between growth factor receptor, especially the EGFR/HER2 pathway, and ER pathways has been associated with endocrine resistance. Thus, combination therapy targeting both ER and EGFR/HER2 signaling to block the crosstalk between these pathways and eliminate escape routes have been proven effective in both preclinical and clinical models. Anti-HER2 directed therapy has been reported to restore hormone sensitivity in HER2−positive breast cancers. Adding trastuzumab to conventional treatment has been a standard treatment of choice in HER2−positive breast cancer irrespective of hormonal receptor (HR) status. The purpose of the study is to evaluate adding effect of 1 year of trastuzumab to conventional adjuvant treatment in patients with HER2−positive breast cancer who received surgery according to HR status.
Patients and Methods: We retrospectively analyzed the clinicopathologic characteristics and outcomes of 618 postoperative HER2−positive breast cancer patients between 2001 and 2008 at the Samsung Medical Center. Most of HER2−positive patients in our institute were treated with 1 year of trastuzumab as a part of adjuvant therapy since 2007 (post-trastuzumab era) compared with 2000–2006 (pre-trastuzumab era). Clinical outcomes including recurrence-free survival (RFS) were analyzed between pre-trastuzumab and post-trastuzumab era according to HR status. We performed Cox regression multivariate analysis for relapse using variables from univariate analysis by log-rank test for relapse. Clinical presentations and clinicopathologic characteristics were evaluated at the time of recurrence between both eras.
Results: The median age at diagnosis was 46 years (range, 22–79). During the median 60.0 months of follow-up, the 5-year recurrence rate was 20.2%. The 618 patients were divided into two groups (patients who received (n=175) and did not receive (n=443) adjuvant trastuzumab). Recurrence rate was much lower in post-trastuzumab era than in pre-trastuzumab era (13.6% vs. 32.3%, p<0.0001). Improving outcomes due to adding trastuzumab in patients with HER2+ve/HR-ve patients showed significant benefit from trastuzumab throughout the follow-up period (p=0.004). However, this improving effect appeared not to be consistent with statistical significance in HER2+ve/HR+ve patients (p=0.135). The analyses were performed according to quantitative ER Allred scores in HER2+ve/ER+ve patients, the effect of adding trastuzumab appeared to be mitigated as time over without any statistical significance (p=0.975). Young age (≤35) (hazard ratio (HR) 2.4, p<0.0001), trastuzumab use (HR 0.4, p=0.001), and node positivity (HR 2.8, p<0.0001) were identified as independent prognostic factors for recurrence in Cox-regression multivariate analysis. Limiting to HER2+ve/ER+ve patients, the statistical significances of trastuzumab use as independent factors were not maintained in Cox-regression models (p=0.074 for trastuzumab use).
Conclusion: Cross-talk between ER and EGFR/HER2 pathways may mitigate trastuzumab effect in HER2+ve/ER+ve breast cancers. Further study is warranted.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P1-12-15.
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Park YH, Im SA, Cho EY, Ahn JH, Kim S, Keam B, Han W, Park IA, Noh DY, Lee JE, Nam SJ, Yang JH, Ahn JS, Im YH. P2-12-19: Nomogram To Predict Recurrence and To Avoid Unnecessary Adjuvant Chemotherapy Based on Ki67 Index and ER Status in Hormone Receptor (HR)-Positive Breast Cancers with Low Number of Nodal Metastases (≤3) (NCT01273415). Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p2-12-19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
Hormone receptor (HR) positive breast cancers characterized with ER-associated genes are differentiated luminal B from luminal A tumors mainly by proliferation genes. According to NCCN guideline 2011, node positivity has been a main determinant to decide adjuvant chemotherapy with category 1. However, the experts’ panel at the St. Gallen Consensus in 2009 do not provides definite indications to give or withhold chemotherapy in patient group with intermediate criteria including low numbers (1-3, N1) of involved lymph nodes. Thus, in cases of limited number of nodal metastases, the role of biologic factors including Ki67 index needs to be defined. The aims of this study are to evaluate of Ki67 index as a useful surrogate marker to predict recurrence and to avoid unnecessary adjuvant chemotherapy and to develop nomogram based on Ki67 index to determine adjuvant therapeutic options in HR-positive in N0 and N1 breast cancers.
Patients and Methods
We retrospectively analyzed the clinicopathologic characteristics and outcomes of 953 postoperative HR-positive N0 and N1 breast cancer patients between 2004 and 2007 at the Samsung Medical Center. We constructed nomogram based on Cox regression model using independent factors demonstrated in multivariate analysis and validated externally in a cohort of 895 patients treated at Seoul National University Hospital.
Results: In Cox regression multivariate analysis, ER-ve/PgR+ve and Ki67 index were identified as independent factors.
Nomogram base on Cox-regression model showed an AUC of 0.75 (95% CI, 0.72−0.77) in the training set. The validation set showed a good discrimination with an AUC of 0.63 (95% CI, 0.60−0.66). We defined low nomogram score as less than 53, and high nomogram score as 53 or more from the cut-off value of the nomogrma ROC curve. Patients who received anthracycline-containing adjuvant chemotherapy with high nomogram scores showed better RFS with statistical significance than those who did not receive anthracycline-containing adjuvant chemotherapy with high nomogram scores (p<0.0001). In contrast, the patients with low nomogram scores did not show any benefit from anthracycline-containing adjuvant chemotherapy (p=0.804). When the patients with high nomogram scores divided into two groups according to Allred ER scores (0-4 vs 5–8), the patients with high ER Allred scores (5-8) and high nomogram scores did not show any benefit from anthracycline-containing chemotherapy (p=0.283). Main benefit from adjuvant chemotherapy is focused on the patients with low ER Allred scores (0-4) and high nomogram score (p=0.022).
Conclusion: Ki67 index is useful as a valuable surrogate marker to predict recurrence and to avoid unnecessary chemotherapy. Nomogram based on Ki67 index is constructed and validated to determine adjuvant therapeutic options in HR-positive N0 and N1 breast cancers.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P2-12-19.
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Zhan R, Du X, Su J, Li XN, Wang WG, Liang CQ, Yang JH, Li Y, Pu JX, Sun HD. Isorosthornins A-C, new ent-kaurane diterpenoids from Isodon rosthornii. NATURAL PRODUCTS AND BIOPROSPECTING 2011; 1:116-120. [PMCID: PMC4131646 DOI: 10.1007/s13659-011-0031-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Accepted: 12/07/2011] [Indexed: 06/02/2023]
Abstract
Three new ent-kauranoids, isorosthornins A-C (1–3), and a new natural product, dihydroponicidin (4), together with five known ones were isolated from the aerial parts of Isodon rosthornii. The structures were determined by means of extensive spectroscopic analysis. All diterpenoids isolated were evaluated for their cytotoxicity against HL-60, SMMC-7721, A-549, MCF-7, and SW480 cell lines, and compounds 5 and 7 showed significant inhibitory effects on all cell lines.
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