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Lu SL, Yang WC, Chang YC, Chao CC, Liang CH, Chiang PL, Lin V, Lu JT, Hsu FM. Automated Detection, Segmentation, and Tracking of Brain Metastases in Repeated Courses of Stereotactic Radiosurgery Using Integrated Artificial Intelligence. Int J Radiat Oncol Biol Phys 2023; 117:e476. [PMID: 37785511 DOI: 10.1016/j.ijrobp.2023.06.1690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Salvage stereotactic radiosurgery (SRS) for distant brain metastases has been demonstrated as a safe and effective approach for intracranial recurrences after initial SRS. However, accurate tumor detection and segmentation among responding tumors within the irradiated parenchyma can be challenging. The requirement for the registration and reference to the previous course of SRS is very time-consuming and suffers significant inter and intra-reader variability. Artificial intelligence (AI)-assisted system has been proven to improve the accuracy and efficiency in the clinical flow of de-novo SRS. We hypothesize that an integrated AI system can facilitate an automated tumor contouring process for repeated SRS. MATERIALS/METHODS Three patients who underwent their third course of SRS to brain metastases were selected for the pioneering works. They have had two sessions of SRS with a mean lesion number of 4 and 3.7, respectively. VBrain, an FDA-approved brain tumor management AI platform, was used to co-registered serial MR scans and automatically identify, track, and contour brain metastases for each course of SRS. The AI also indicated new lesions and treated lesions for each course. Three radiation oncologists experienced in brain SRS contoured the gross tumor volumes (GTVs) of the third course of SRS in two reader modes (assisted then unassisted) with a memory washout period of one week between each section. The segmentation ground truth was established through consensus among the three experts. Lesion-wise sensitivity, contouring accuracy, and consuming time were compared between the two contouring modes. RESULTS In each patient, there were 15, 11, and 9 metastases, with a median diameter of 4.72 (95% CI: 4.05, 6.91) mm. The mean lesion-wise sensitivity was 96.96±2.47% with AI assistance and 76.90 ± 7.10% without assistance. There were two false-positive lesions in the assisted read, resulting in a low average false-positive rate of 0.67 per patient, while no false positive for the unassisted mode. AI assistance improved contouring accuracy. The median Dice similarity coefficient (DSC) was 0.71 (95% CI: 0.55, 0.87) for assisted contouring and 0.65 (95% CI: 0.46, 0.85) for unassisted contouring. We also use average Hausdorff distance (HD) to measure segmentation results. The mean HD was 0.72± 0.13 mm versus 0.73±0.08 mm for the two contouring modes (p = 0.02) Furthermore, the median contouring time per case was significantly shorter with AI assistance than without assistance (20.8 minutes vs. 29.8 minutes; p < 0.001), corresponding to a 43.2% time-saving. CONCLUSION Our results suggest that the integration of an AI-based system into repeated brain SRS can significantly improve the accuracy and efficiency of tumor detection and segmentation. This approach has the potential to streamline the treatment planning process for salvage SRS.
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Affiliation(s)
- S L Lu
- Department of Radiation Oncology, National Taiwan University Cancer Center, Taipei, Taiwan; Graduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - W C Yang
- Department of Radiation Oncology, National Taiwan University Cancer Center, Taipei, Taiwan
| | | | | | | | | | - V Lin
- Vysioneer Inc., Cambridge, MA
| | - J T Lu
- Vysioneer Inc., Cambridge, MA
| | - F M Hsu
- Department of Radiation Oncology, National Taiwan University Cancer Center, Taipei, Taiwan; Graduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan
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Yang WC, Wei MF, Huang CS, Kuo SH. Radiosensitizing Effects of CDK4/6 Inhibitors in Hormone Receptor-Positive and HER2-Negative Breast Cancer are through Downregulating DNA Repair Mechanism and NF-κB-Signaling Pathway. Int J Radiat Oncol Biol Phys 2023; 117:e272. [PMID: 37785028 DOI: 10.1016/j.ijrobp.2023.06.1240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) CDK4/6 inhibitors combined with endocrine therapy are demonstrated to prolong survival for hormone receptor (HR)-positive and HER2-negative advanced breast cancer. We sought to assess whether cyclin-dependent kinases 4 and 6 (CDK4/6) inhibitors can enhance the radiosensitivity and their underlying mechanisms in this subtype of breast cancer through both in vitro and in vivo approaches. MATERIALS/METHODS We used MCF-7 and T-47D (HR-positive and HER2-negative) breast cancer cell lines, and different doses of CDK4/6 inhibitors (ribociclib and palbociclib) and radiotherapy (RT) to assess the biological functions and mechanisms through in vitro study. The radiation enhancing effect was assessed by clonogenic assay, numbers of the DNA damage response-related molecules, γH2AX and 53BP1, were assessed by immunofluorescence. The p-ERK, c-Myc, and DNA-double strand break (DNA-DSB)-related molecules, p-DNA-PKcs, and p-ATM, were assessed by western blotting. We used NF-κB p65 Transcription Factor Assay Kit to evaluate the transcriptional activity of NF-κB. We evaluated the antitumor effect of combined RT (2 Gy every other day for total 6 Gy) and ribociclib through the MCF-7 orthotopic xenograft model. RESULTS The synergistic effects of combining RT with different concentrations of ribociclib and palbociclib pretreatment were demonstrated by colonogenic assay. We revealed that CDK4/6 inhibitors synergistically increased the numbers of RT-induced γH2AX and 53BP1, downregulated the expression of p-DNA-PKcs and p-ATM activated by RT, and diminished the expression of RT-triggering p-ERK expression, and NF-κB activation and its down-streaming gene, c-Myc. When compared with control, ribociclib, and RT group, combined ribociclib and RT significantly shrunk the tumor growth of MCF-7 cell xenograft tumors, and downregulated the immunohistochemical expression of p-ERK, p-NF-κB p65, and c-Myc than control group. CONCLUSION Our results demonstrated that combining CDK4/6 inhibitors enhanced the radiosensitivity in HR-positive and HER2-negative breast cancer cells, and conceivably radioenhancing mechanisms of CDK4/6 inhibitors are at least through lessening DNA-DSB repairing processes and weakening the activation of ERK signaling and NF-κB signaling by RT.
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Affiliation(s)
- W C Yang
- Department of Radiation Oncology, National Taiwan University Cancer Center, Taipei, Taiwan; Graduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - M F Wei
- Division of Radiation Oncology, Department of Oncology, National Taiwan University, Taipei, Taiwan
| | - C S Huang
- Departments of Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - S H Kuo
- Graduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Oncology, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
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Liu TF, Chen YF, Hsu FM, Yang WC. Comparison of Hippocampal Volume Change after Whole-Brain Radiotherapy with and without Hippocampal Avoidance: A Post-Hoc Analysis of a Phase II Randomized Trial. Int J Radiat Oncol Biol Phys 2023; 117:e131. [PMID: 37784693 DOI: 10.1016/j.ijrobp.2023.06.931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Hippocampal avoidance whole-brain radiotherapy (HA-WBRT) preserves verbal memory compared to conformal WBRT in the previously reported randomized phase II clinical trial. In the present study, we analyzed the changes in hippocampus volume between groups at longitudinal follow-up time points. We hypothesize better preservation of hippocampus volumes with time in the HA-WBRT group. MATERIALS/METHODS In this post-hoc analysis of a single institution, single-blind, randomized phase II trial, patients with brain metastases were randomized to receive either HA-WBRT or conformal WBRT with 30 Gy in 10 fractions. Patients received gadolinium contrast-enhanced MRI every three months or when clinically indicated after WBRT until progression. Only patients with at least one follow-up MRI were included. The MRI was used to assess baseline intracranial volume, hippocampal volume, the ratio of the total hippocampus to total intracranial volume (HT%), and the ratio of the left (HL%) or right (HR%) hippocampus to total intracranial volume. The volumes were automatically calculated by volBrain, an online MRI brain volumetry system. We used linear mixed models with fixed and random effects to compare the changes of repeated measures of the hippocampus volumes over time between the two groups. RESULTS Among 70 randomized patients, 51 (25 in the HA-WBRT group and 26 in the WBRT group) were included in the present analysis. There were no significant differences between the two groups in the baseline demographics, HT%, HR%, and HL%. The median follow-up time was 13.9 months (range 2.1-31.8 months), and more than 60% of patients had at least one year of follow-up. Linear mixed model analyses showed a more significant decrease of HT% over time in the WBRT arm (regression coefficient β = -0.002, p = 0.001) compared to the HA-WBRT arm (regression coefficient, β = -0.001, p = 0.254), with a significant group by time interaction (F-value = 4.27, p = 0.050). The HL% was stable over time in the HA-WBRT arm (β = 0.0001, p = 0.769) while it decreased in the WBRT arm (β = -0.001, p = 0.003), with a significant group by time interaction (F-value = 6.51, p = 0.015). In contrast, the HR% decreased over time in both groups (HA-WBRT: regression coefficient β = -0.001, p = 0.006; WBRT: regression coefficient β = -0.001, p < 0.001) without significant group by time interaction (F-value = 0.20, p = 0.662). CONCLUSION HA-WBRT better preserves total hippocampus volume with time compared to WBRT, with the main effect contributed by preserving the left hippocampus volume. Further research is warranted to establish the relationship between hippocampus volume perpetuation and cognitive function preservation. The future goal is to investigate whether left-side unilateral HA-WBRT provides similar neurocognitive function preservation compared to standard bilateral HA-WBRT.
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Affiliation(s)
- T F Liu
- Division of Radiation Oncology, Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan
| | - Y F Chen
- Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan
| | - F M Hsu
- Division of Radiation Oncology, Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan; Graduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - W C Yang
- Graduate Institute of Oncology, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Radiation Oncology, National Taiwan University Cancer Center, Taipei, Taiwan
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Zhang P, Zhang J, Zhang B, Yang WC, Hu JB, Sun XF, Zhai G, Qian HR, Li Y, Xu H, Feng F, Wu XY, Liu HL, Liu HJ, Qiu HB, Wu XJ, Zhou YB, Shen KT, Kou YW, Fu Y, Jie ZG, Zou XM, Cao H, Gao ZD, Tao KX. [Adherence to adjuvant with therapy imatinib in patients with gastrointestinal stromal tumor: a national multi-center cross-sectional study]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:775-782. [PMID: 34530558 DOI: 10.3760/cma.j.cn.441530-20210426-00174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: To analyze the current adherence to imatinib in patients with gastrointestinal stromal tumors (GIST) in China and its influencing factors. Methods: A cross-sectional survey was conducted. Study period: from October 1, 2020 to November 31, 2020. Study subjects: GIST patients taking imatinib who were diagnosed and treated in public tertiary level A general hospitals or oncology hospitals; those who had not been pathologically diagnosed, those who never received imatinib, or those who had taken imatinib in the past but stopped afterwards were excluded. The Questionnaire Star online surgery platform was used to design a questionnaire about the adherence to adjuvant imatinib therapy of Chinese GIST patients. The link of questionnaire was sent through WeChat. The questionnaire contained basic information of patients, medication status and Morisky Medication Adherence Scale. Results: A total of 2162 questionnaires from 31 provinces, autonomous regions, and municipalities were collected, of which 2005 were valid questionnaires, with an effective rate of 92.7%. The survey subjects included 1104 males and 901 females, with a median age of 56 (22-91) years old. Working status: 609 cases (30.4%) in the work unit, 729 cases (36.4%) of retirement, 667 cases of flexible employment or unemployment (33.3%). Education level: 477 cases (23.8%) with bachelor degree or above, 658 cases (32.8%) of high school, 782 cases (39.0%) of elementary or junior high school, 88 cases (4.4%) without education. Marital status: 1789 cases (89.2%) were married, 179 cases (8.9%) divorced or widowed, 37 cases (1.8%) unmarried. Two hundred and ninety-four patients (14.7%) had metastasis when they were first diagnosed, including 203 liver metastases, 52 peritoneal metastases, and 39 other metastases. One thousand eight hundred and sixty-nine patients underwent surgical treatment, of whom 1642 (81.9%) achieved complete resection. The median time of taking imatinib was 25 (1-200) months. Common adverse reactions of imatinib included 1701 cases (84.8%) of periorbital edema, 1031 cases (51.4%) of leukopenia, 948 cases (47.3%) of fatigue, 781 cases (39.0%) of nausea and vomiting, 709 cases (35.4%) of rash, and 670 cases (33.4%) of lower extremity edema. The score of the Morisky Medication Adherence Scale showed that 392 cases (19.6%) had poor adherence, 1023 cases (51.0%) had moderate adherence, and 590 cases (29.4%) had good adherence. Univariate analysis showed that gender, age, work status, economic income, residence, education level, marriage, the duration of taking medication and adverse reactions were associated with adherence to adjuvant imatinib therapy (all P<0.05). Multivariate analysis showed that female (OR=1.264, P=0.009), non-retirement (OR=1.454, P=0.001), monthly income ≤4000 yuan (OR=1.280, P=0.036), township residents (OR=1.332, P=0.005), unmarried or divorced or widowed (OR=1.362, P=0.026), the duration of imatinib medication >36 months (OR=1.478, P<0.001) and adverse reactions (OR=1.719, P=0.048) were independent risk factors for poor adherence to adjuvant imatinib. Among patients undergoing complete resection, 324 (19.7%) had poor adherence, 836 (50.9%) had moderate adherence, and 482 (29.4%) had good adherence. Meanwhile, 55 patients with good adherence (11.4%) developed recurrence after surgery, 121 patients with moderate adherence (14.5%) developed recurrence, 61 patients with poor adherence (18.8%) developed recurrence, and the difference was statistically significant (P=0.017). Conclusions: The adherence to adjuvant therapy with imatinib in Chinese GIST patients is relatively poor. Females, non-retirement, monthly income ≤4000 yuan, township residents, unmarried or divorced or widowed, the duration of imatinib medication >36 months, and adverse reactions are independently associated with poor adherence of GIST patients. Those with poor adherence have a higher risk of recurrence after surgery. Positive interventions based on the above risk factors are advocated to improve the prognosis of patients with GIST.
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Affiliation(s)
- P Zhang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - J Zhang
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - B Zhang
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - W C Yang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - J B Hu
- Department of Gastrointestinal Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - X F Sun
- Department of Medical Oncology, Jiangsu Institute of Cancer Research, Jiangsu Provincial Cancer Hospital, the Affiliated Cancer Hospital, Nanjing Medical University, Nanjing 210009, China
| | - G Zhai
- The First Department of General Surgery, Tumor Hospital of Shanxi Province, Taiyuan 030013, China
| | - H R Qian
- Department of General Surgery, Institute of Minimal Invasive Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Y Li
- The Third Department of Surgery, the Fourth Hospital, Hebei Medical University, Shijiazhuang 050011, China
| | - H Xu
- Department of Gastric Surgery, the First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
| | - F Feng
- Department of Digestive Surgery, the First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - X Y Wu
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - H L Liu
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - H J Liu
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital, Shandong First Medical University, Jinan 250021, China
| | - H B Qiu
- Department of Gastric Surgery, Cancer Center, Sun Yat-sen University, Guangzhou 510060, China
| | - X J Wu
- Department of Colorectal Surgery, Cancer Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Y B Zhou
- Department of Gastrointestinal Surgery, the Affiliated Hospital, Qingdao University, Qingdao 266003, China
| | - K T Shen
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Y W Kou
- Department of Gastrointestinal Surgery, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - Y Fu
- Department of Gastrointestinal Surgery, the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450001, China
| | - Z G Jie
- Department of General Surgery, the First Affiliated Hospital, Nanchang University, Nanchang 330006, China
| | - X M Zou
- Department of General Surgery, The Second Affiliated Hospital, Harbin Medical University, Harbin 150086, China
| | - H Cao
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai200127, China
| | - Z D Gao
- Department of Gastrointestinal Surgery, Peking University People's Hospital, Beijing 100044, China
| | - K X Tao
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Wang T, Zeng XY, Yang WC, Yang M, Fan J, Jia J, Li CG, Liu WZ, Zhang P, Cai KL, Wang GB, Tao KX. [Clinicopathological characteristics and prognosis of patients with sporadic multiple primary gastrointestinal stromal tumors]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:783-788. [PMID: 34530559 DOI: 10.3760/cma.j.cn.441530-20210426-00173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinicopathological characteristics and prognosis of sporadic multiple primary gastrointestinal stromal tumor (GIST). Methods: A retrospective cohort study was conducted. Case inclusion criteria: (1) postoperative pathological diagnosis of GIST; (2) primary GIST with single lesion or sporadic multiple primary GIST (sporadic GIST was defined as primary GIST other than familial and syndrome-related GIST, and multiple primary GIST was defined as the number of primary GISTs in the same patient ≥ 2); (3) patients with complete clinicopathological data. Those with tumor recurrence or distant metastasis, and with other malignancies were excluded. Medical records of patients with primary GIST who underwent surgical resection in the Union Hospital, Tongji Medical College, Huazhong University of Science and Technology from January 2010 to December 2020 were collected. Patients were divided into sporadic multiple primary GIST group and single primary GIST group according to the number of primary GIST lesions. The clinicopathological data and prognosis of the two groups were observed and compared. Results: A total of 1200 patients with primary GIST were enrolled in this study, including 628 males (52.3%) and 572 females (47.7%), with a median onset age of 58 (19-93) years. Among them, 1165 cases (97.1%) were sporadic primary GIST with single lesion; 35 cases (2.9%) were sporadic multiple primary GIST. Among 35 cases of sporadic multiple primary GIST, 3 cases (8.6%) had acid reflux as the first symptom, which was higher than the single primary GIST group (22/1165, 1.9%) (χ(2)=7.437, P=0.006). There were no significant differences in other clinical characteristics between the two groups (all P>0.05). Patients in the sporadic multiple primary GIST group contained a total of 80 primary tumors. Compared with the single primary GIST group, the sporadic multiple primary GIST group had a higher proportion of tumors originating in the stomach [87.5% (70/80) vs. 59.1% (689/1165)], lower proportion of spindle cell in histology [85.0% (68/80) vs. 93.7% (1092/1165)], higher proportion of positive CD34 [97.5% (78/80) vs. 87.6% (1021/1165)], smaller maximum diameter [maximum diameter ≤2.0 cm: 61.2% (49/80) vs. 28.8% (335/1165)], lower mitotic rate [≤5/50 high-power fields (HPF): 93.8% (75/80) vs. 74.5% (868/1165)], lower risk of recurrence [60.0% (48/80) vs. 23.3% (271/1165)], and the differences were all statistically significant (all P<0.05). The 3-year recurrence-free survival rate in the sporadic multiple primary group and the single primary GIST group was 96.6% and 89.3% respectively (P=0.160), and the 3-year overall survival rate was 100.0% and 92.8%, respectively (P=0.088). Conclusions: The most common type of sporadic multiple primary GIST is multiple tumors originating in the stomach at the same time. Compared with primary GIST with single lesion, sporadic multiple primary GIST presents smaller maximum diameter and lower mitotic rate. The prognosis of patients between two groups is not significantly different.
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Affiliation(s)
- T Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University ofScience and Technology, Wuhan 430022, China
| | - X Y Zeng
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University ofScience and Technology, Wuhan 430022, China
| | - W C Yang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University ofScience and Technology, Wuhan 430022, China
| | - M Yang
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - J Fan
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - J Jia
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University ofScience and Technology, Wuhan 430022, China
| | - C G Li
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University ofScience and Technology, Wuhan 430022, China
| | - W Z Liu
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University ofScience and Technology, Wuhan 430022, China
| | - P Zhang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University ofScience and Technology, Wuhan 430022, China
| | - K L Cai
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University ofScience and Technology, Wuhan 430022, China
| | - G B Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University ofScience and Technology, Wuhan 430022, China
| | - K X Tao
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University ofScience and Technology, Wuhan 430022, China
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He L, Zhang HM, Lyu B, Shen YC, Li CY, Yang WC, Fu J, Du XW, Wang FD, Wang QP, Yin XH, Wan SK, Bin B, Li YC, Dai SY, Liu B. Development and preliminary test of a space-resolved vacuum-ultraviolet spectroscopy in EAST. Rev Sci Instrum 2021; 92:043519. [PMID: 34243364 DOI: 10.1063/5.0040643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/17/2021] [Indexed: 06/13/2023]
Abstract
The impurity radiation from the divertor region of the EAST tokamak is dominantly in the wavelength range of vacuum ultraviolet (VUV) due to the elevated edge electron temperature. A space-resolved VUV spectroscopy is developed to measure impurity radiation in the divertor region. An eagle-type VUV spectrometer with a focal length of 1 m is adopted in this system, equipped with a spherical grating and a charged-coupled device (CCD) detector. The performance of the VUV spectrometer is preliminarily tested on a synchrotron radiation facility. The wavelength calibration is conducted near 65 nm. It is found that the wavelength range observed by the CCD detector is about 11.07 nm around the central wavelength of about 65 nm. With a linear dispersion of 0.0053 nm/pixel, it is possible to measure the ion temperature lower than 20 eV at the edge region by analyzing the Doppler broadening of a carbon line. These test results show that the performance of the VUV spectrometer is capable of measuring divertor radiation and analyzing the ion temperature of edge impurity ions.
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Affiliation(s)
- L He
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - H M Zhang
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - B Lyu
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Y C Shen
- Hefei Normal University, Hefei 230601, China
| | - C Y Li
- Anhui Spectreation Instrument Co. Ltd., Hefei 230088, China
| | - W C Yang
- Anhui Spectreation Instrument Co. Ltd., Hefei 230088, China
| | - J Fu
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - X W Du
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - F D Wang
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Q P Wang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - X H Yin
- School of Electrical Engineering, University of South China, Hengyang 420001, China
| | - S K Wan
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - B Bin
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Y C Li
- Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - S Y Dai
- School of Physics, Dalian University of Technology, Dalian 116024, China
| | - B Liu
- Southwestern Jiaotong University, Chengdu 610031, China
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Zhu YW, Yang WC, Liu W, Yin XH, Luo XB, Zhang SA, Wang WC, Yang L. Effects of dietary rapeseed meal inclusion levels on growth performance, organ weight, and serum biochemical parameters in Cherry Valley ducks. Poult Sci 2020; 98:6888-6896. [PMID: 31347686 PMCID: PMC8913998 DOI: 10.3382/ps/pez419] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 07/12/2019] [Indexed: 11/20/2022] Open
Abstract
The aim of this study was to investigate the effects of the inclusion levels of different types of rapeseed meal (RSM) on performance, organ weight, and serum biochemical parameters in Cherry Valley ducks in the starter period and grower-finisher period. In Exp. 1, a total of 750 seven-day-old male ducklings were divided into 5 dietary treatments with 6 replicate pens of 25 birds per pen. The starter diets with the inclusion of 0, 5, 10, 15, or 20% of double-low RSM contained 0, 1.37, 2.15, 3.46, or 5.31 µmol glucosinolates (GLS)/g in the finished feed (from day 7 to 21). In Exp. 2, a total of 900 fifteen-day-old male ducklings were divided into 6 dietary treatments with 6 replicate pens of 25 birds per pen. The grower-finisher diets with the inclusion of 0, 5, 10, 15, 20, or 25% of Indian RSM contained 0, 7.67, 15.34, 24.66, 31.21, or 38.44 µmol GLS/g in the finished feed (from day 15 to 42). For ducklings in the starter period (Exp. 1), body weight gain and feed intake decreased linearly as the dietary double-low RSM inclusion level increased at day 7 to 14, while growth rate was not influenced by dietary double-low RSM inclusion levels at day 15 to 21 and day 7 to 21. For ducks in the grower-finisher period (Exp. 2), growth performance decreased linearly as the dietary RSM inclusion level increased from 5 to 20%. In addition, dietary RSM inclusion levels induced liver enlargement in ducklings at day 21 (5 to 20% double-low RSM with 1.37 to 5.31 µmol/g GLS) and thyroid enlargement accompanied by increased serum AST and ALP activities in ducks at day 42 (5 to 15% Indian RSM with 7.67 to 23.66 µmol/g GLS). Therefore, our results indicated that the upper limit of using RSM sources in feed formulation should consider the anti-nutritional factor of GLS content at different stages of duck growth.
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Affiliation(s)
- Y W Zhu
- Guangdong Provincial Key Laboratory of Animal Nutrition and Regulation, College of Animal Science, South China Agricultural University, Guangzhou 510000, China
| | - W C Yang
- Aonong Biological Technology Group Co. Ltd., Xiamen 361000, China
| | - W Liu
- Wens Foodstuff Group Co. Ltd., Yunfu 527300, China
| | - X H Yin
- Animal husbandry and veterinary bureau of Liangshan, Jining 272000, China
| | - X B Luo
- Wens Foodstuff Group Co. Ltd., Yunfu 527300, China
| | - S A Zhang
- Wens Foodstuff Group Co. Ltd., Yunfu 527300, China
| | - W C Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition and Regulation, College of Animal Science, South China Agricultural University, Guangzhou 510000, China
| | - L Yang
- Guangdong Provincial Key Laboratory of Animal Nutrition and Regulation, College of Animal Science, South China Agricultural University, Guangzhou 510000, China
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8
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Tao KX, Wan WZ, Chen JH, Yang WC, Cai M, Shuai XM, Cai KL, Gao JB, Wang GB, Zhang P. [Laparoscopic versus open surgery for gastric gastrointestinal stromal tumors in unfavorable location: a propensity score-matching analysis]. Zhonghua Wai Ke Za Zhi 2019; 57:585-590. [PMID: 31422627 DOI: 10.3760/cma.j.issn.0529-5815.2019.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the efficacy and feasibility of laparoscopic resection for gastric gastrointestinal stromal tumor (GIST) in unfavorable location by comparing with open surgery. Methods: Clinicopathological and follow-up data of 176 patients with gastric GIST in unfavorable location admitted at Union Hospital, Tongji Medical College, Huazhong University of Science and Technology from January 2005 to December 2017 were analyzed retrospectively. There were 94 males and 82 females, aging of (57.4±12.7) years (range: 20-90 years). Of the 176 patients, 64 underwent laparoscopic surgery (laparoscopic group) and 112 underwent open surgery (open group). One-to-one propensity score matching (PSM) was performed to balance the covariance between laparoscopic group and open surgery group. Before PSM, the differences between the two group in tumor size and modified National Institutes of Health risk classification were significant. After PSM, there were 63 pairs (63 cases in laparoscopic group and 63 cases in open group) and the baseline characteristics were comparable between the two groups(P>0.05). The difference of short-term outcome between the two groups were compared using t test, χ(2) test or Wilcoxon rank-sum test. The survival curve was established by Kaplan-Meier method and the Log-rank test was used to compare the survival of the two groups. Results: The operation time of laparoscopic group was shorter ((141.6±100.6) minutes vs. (100.4±67.7) minutes, t=2.681, P=0.008), the hospitalization cost was higher ((5.2±0.7) ten thousand yuan vs. (4.2±0.8) ten thousand yuan, t=7.357, P=0.000) than open group. The time to first flatus ((49.1±8.2) hours vs. (71.0±4.6) hours, t=-18.482, P=0.000) and preoperative hospital stay ((10.3±6.0) days vs. (14.8±7.6) days, t=-3.717, P=0.000) was shorter in laparoscopic group. With a median follow-up time of 44 months (range: 10 to 154 months), the 1-, 3-, 5-year relapse-free survival rates in the laparoscopic group and open group were 98.3%, 92.1%, 92.1% and 100%, 86.3%, 83.2%, respectively (χ(2)=0.696, P=0.404). The 1-, 3-, 5-year overall survival rates in the laparoscopic group and open group were 96.6%, 94.7%, 94.7% and 100%, 91.1%, 81.4%, respectively (χ(2)=0.366, P=0.545). Conclusions: In experienced medical centers, laparoscopic resection is safe and feasible for GIST in unfavorable location. Compared to open surgery, laparoscopic resection achieves a faster postoperative recovery and a similar long-term prognosis.
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Affiliation(s)
- K X Tao
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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9
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Yang WC, Guo WL, Zan LS, Wang YN, Tang KQ. Bta-miR-130a regulates the biosynthesis of bovine milk fat by targeting peroxisome proliferator-activated receptor gamma. J Anim Sci 2017; 95:2898-2906. [PMID: 28727095 DOI: 10.2527/jas.2017.1504] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Milk fat determines the quality of milk and is also a main targeted trait in dairy cow breeding. Recent studies have revealed important regulatory roles of microRNAs (miRNA) in milk fat synthesis in the mammary gland. However, the role of miRNA in bovine mammary epithelial cells (BMEC) remains largely unknown. In this study, we found that the overexpression of miR-130a significantly decreased cellular triacylglycerol (TAG) levels and suppressed lipid droplet formation, whereas the inhibition of miR-130a resulted in greater lipid droplet formation and TAG accumulation in BMEC. MiR-130a also significantly affected mRNA expression related to milk fat metabolism. Specifically, the overexpression of miR-130a reduced the mRNA expression of , , , and , whereas the downregulation of miR-130a increased the mRNA expression of , , , , , and . Furthermore, western blot analysis revealed the protein level of PPARG in miR-130a mimic and inhibitor transfection groups to be consistent with the mRNA expression response. Finally, luciferase reporter assays verified that PPARG was the direct target of miR-130a. This study provides the first experimental evidence that miR-130a directly affects TAG synthesis in BMEC by targeting PPARG, suggesting that miR-130a potentially could be used to improve beneficial milk components in dairy cows.
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10
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Yang WC, Xie YT, Zhu WK, Park K, Chen AP, Losovyj Y, Li Z, Liu HM, Starr M, Acosta JA, Tao CG, Li N, Jia QX, Heremans JJ, Zhang SX. Epitaxial thin films of pyrochlore iridate Bi 2+xIr 2-yO 7-δ: structure, defects and transport properties. Sci Rep 2017; 7:7740. [PMID: 28798487 PMCID: PMC5552750 DOI: 10.1038/s41598-017-06785-w] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 05/15/2017] [Indexed: 11/09/2022] Open
Abstract
While pyrochlore iridate thin films are theoretically predicted to possess a variety of emergent topological properties, experimental verification of these predictions can be obstructed by the challenge in thin film growth. Here we report on the pulsed laser deposition and characterization of thin films of a representative pyrochlore compound Bi2Ir2O7. The films were epitaxially grown on yttria-stabilized zirconia substrates and have lattice constants that are a few percent larger than that of the bulk single crystals. The film composition shows a strong dependence on the oxygen partial pressure. Density-functional-theory calculations indicate the existence of BiIr antisite defects, qualitatively consistent with the high Bi: Ir ratio found in the films. Both Ir and Bi have oxidation states that are lower than their nominal values, suggesting the existence of oxygen deficiency. The iridate thin films show a variety of intriguing transport characteristics, including multiple charge carriers, logarithmic dependence of resistance on temperature, antilocalization corrections to conductance due to spin-orbit interactions, and linear positive magnetoresistance.
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Affiliation(s)
- W C Yang
- Department of Physics, Indiana University, Bloomington, Indiana, 47405, USA
| | - Y T Xie
- Department of Physics, Virginia Tech, Blacksburg, Virginia, 24061, USA
| | - W K Zhu
- Department of Physics, Indiana University, Bloomington, Indiana, 47405, USA
| | - K Park
- Department of Physics, Virginia Tech, Blacksburg, Virginia, 24061, USA
| | - A P Chen
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, 87545, USA
| | - Y Losovyj
- Department of Chemistry, Indiana University, Bloomington, Indiana, 47405, USA
| | - Z Li
- Department of Physics, Indiana University, Bloomington, Indiana, 47405, USA.,Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, 87545, USA
| | - H M Liu
- Department of Physics, Indiana University, Bloomington, Indiana, 47405, USA
| | - M Starr
- Department of Physics, Indiana University, Bloomington, Indiana, 47405, USA
| | - J A Acosta
- Department of Physics, Indiana University, Bloomington, Indiana, 47405, USA
| | - C G Tao
- Department of Physics, Virginia Tech, Blacksburg, Virginia, 24061, USA
| | - N Li
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, 87545, USA
| | - Q X Jia
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, 87545, USA.,Department of Materials Design and Innovation, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - J J Heremans
- Department of Physics, Virginia Tech, Blacksburg, Virginia, 24061, USA
| | - S X Zhang
- Department of Physics, Indiana University, Bloomington, Indiana, 47405, USA.
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11
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Liu SQ, Liu Z, Yang WC, Hu ZH, Zhang JL, Li Y. [Application and efficacy of endotracheal tube of drug injection for postoperative patients]. Zhonghua Yi Xue Za Zhi 2017; 97:2253-2256. [PMID: 28780837 DOI: 10.3760/cma.j.issn.0376-2491.2017.29.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the efficacy of endotracheal tube for drug injection in postoperative ICU patients. Methods: A total of 60 ICU patients who were given mechanical ventilation after surgical treatment were enrolled in this study from January 2015 to August 2016 at our hospital. All the patients were divided into the observation group (30 cases) and the control group (30 cases). In the observation group, the patients were treated with the endotracheal tube for surface anesthesia by injecting 2% lidocaine into the trachea, and patients in the control group were treated with saline instead of lidocaine. Patients' tolerance to endotracheal tube, cardiovascular system adverse reactions, the frequency and dosage of sedative and analgesic drug within 12 h mechanical ventilation post operation were analyzed and compared between the two groups. Results: The occurrence rate of cough, hypertension and tachycardia in the observation group were(0.6±0.3), (0.8±0.3)and(1.3±0.6), respectively, which were significantly lower than the control group (5.9±2.1), (6.0±1.9)and(4.9±1.8), the differences were statistically significant (P<0.05). In addition, the frequency of sedative drug was (0.8±0.3), with a dosage of midazolam(1.2±0.3)mg. While in the control group, the frequency of sedative drugs was (5.1±1.9), with a dosage of midazolam (9.9±3.2) mg. The frequency and dosage of sedative drug administration in the observation group were significantly lower than those in the control group, the difference was significant difference (P<0.05). Conclusions: The use of endotracheal tube for drug injection can improve the tolerance of ICU patients to endotracheal tube, reduce the dosage of sedative drugs, and reduce the adverse cardiovascular reactions.
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Affiliation(s)
- S Q Liu
- Department of Anesthesiology, Henan People's Hospital, Zhengzhou 450003, China
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12
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Tang KQ, Wang YN, Zan LS, Yang WC. miR-27a controls triacylglycerol synthesis in bovine mammary epithelial cells by targeting peroxisome proliferator-activated receptor gamma. J Dairy Sci 2017; 100:4102-4112. [PMID: 28284697 DOI: 10.3168/jds.2016-12264] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Accepted: 01/20/2017] [Indexed: 12/12/2022]
Abstract
Growing evidence has revealed that microRNA are central elements in milk fat synthesis in mammary epithelial cells. A negative regulator of adipocyte fat synthesis, miR-27a has been reported to be involved in the regulation of milk fat synthesis in goat mammary epithelial cells; however, the regulatory role of miR-27a in bovine milk fat synthesis remains unclear. In the present study, primary bovine mammary epithelial cells (BMEC) were harvested from mid-lactation cows and cultured in Dulbecco's modified Eagle's medium/F-12 medium with 10% fetal bovine serum, 5 μg/mL of insulin, 1 μg/mL of hydrocortisone, 2 μg/mL of prolactin, 1 μg/mL of progesterone, 100 U/mL of penicillin, and 100 μg/mL of streptomycin. We found that the overexpression of miR-27a significantly suppressed lipid droplet formation and decreased the cellular triacylglycerol (TAG) levels, whereas inhibition of miR-27a resulted in a greater lipid droplet formation and TAG accumulation in BMEC. Meanwhile, overexpression of miR-27a inhibited mRNA expression of peroxisome proliferator-activated receptor gamma (PPARG), CCAAT/enhancer-binding protein beta (C/EBPβ), perilipin 2 (PLIN2), and fatty acid binding protein 3 (FABP3), whereas miR-27a downregulation increased PPARG, C/EBPβ, FABP3, and CCAAT enhancer binding protein alpha (C/EBPα) mRNA expression. Furthermore, Western blot analysis revealed the protein level of PPARG in miR-27a mimic and inhibitor transfection groups to be consistent with the mRNA expression response. Moreover, luciferase reporter assays verified that PPARG was the direct target of miR-27a. In summary, these results indicate that miR-27a has the ability to control TAG synthesis in BMEC via targeting PPARG, suggesting that miR-27a could potentially be used to improve beneficial milk components in dairy cows.
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Affiliation(s)
- K Q Tang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Y N Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - L S Zan
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China.
| | - W C Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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13
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Yang WC, Guo WL, Zan LS, Wang YN, Tang KQ. Bta-miR-130a regulates the biosynthesis of bovine milk fat by targeting peroxisome proliferator-activated receptor gamma. J Anim Sci 2017. [DOI: 10.2527/jas2017.1504] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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14
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Hu XM, Zhao GQ, Xue LW, Yang WC. Synthesis, crystal structures, and antimicrobial activity of copper(II) and zinc(II) complexes derived from 2-bromo-4-chloro-6-[(2-morpholin-4-ylethylimino)methyl]phenol. RUSS J COORD CHEM+ 2016. [DOI: 10.1134/s107032841605002x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Yang WC, Zhu L, Qiu YM, Zhou BX, Cheng JL, Wei CL, Chen HC, Li LY, Fu XD, Fu JJ. Isolation and analysis of cell-free fetal DNA from maternal peripheral blood in Chinese women. Genet Mol Res 2015; 14:18078-89. [PMID: 26782455 DOI: 10.4238/2015.december.22.34] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Non-invasive prenatal diagnosis is used to detect the genetic material of the fetus by isolating the cell-free fetal DNA (cffDNA) from maternal peripheral blood. In order to establish an isolation method for cffDNA from maternal peripheral blood in Chinese women, the cffDNA was acquired with a two-step centrifugation using a QlAamp DNA Blood mini kit. The SRY gene of plasma DNA was amplified by polymerase chain reaction (PCR). Real-time quantitative PCR was used to measure the concentration of cffDNA in maternal peripheral blood in different pregnant women. The results of the SRY gene amplification of plasma DNA from pregnant women was the same as that of the amniocyte DNA. The average concentration of cffDNA in maternal peripheral blood of pregnant women in different gestational stages was 0.98 ng/mL (0.26-1.49 ng/mL), 1.43 ng/mL (0.46- 2.34 ng/mL), and 1.95 ng/mL (0.65-6.81 ng/mL) from early, middle, and late gestational stages, respectively. The mean of cffDNA from total DNA in plasma in different stages of gestation was 22.28% (9.86-27.81%). The lowest concentration of DNA amplified by nested-PCR in our research was 10-4-10-3 ng/μL. The isolation method for cffDNA from maternal peripheral blood was successfully established and further research into its applications will be conducted.
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Affiliation(s)
- W C Yang
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China
| | - L Zhu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China
| | - Y M Qiu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China.,Maternal and Child Health Care Hospital of Zigong, Zigong, Sichuan Province, China
| | - B X Zhou
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China
| | - J L Cheng
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China
| | - C L Wei
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau (SAR), China
| | - H C Chen
- Department of Biochemistry, School of Life Sciences & the State Key Laboratory of Medical Genetics, Central South University, Changsha, Hunan Province, China
| | - L Y Li
- Institute of Reproduction and Stem Cell Engineering, Central South University Xiangya School of Medicine, Changsha, Hunan Province, China
| | - X D Fu
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Sichuan Medical University, Luzhou, Sichuan Province, China
| | - J J Fu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau (SAR), China.,Department of Obstetrics and Gynecology, First Affiliated Hospital of Sichuan Medical University, Luzhou, Sichuan Province, China
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16
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Wei CL, Cheng JL, Yang WC, Li LY, Cheng HC, Fu JJ. Identification of the origin of marker chromosomes by two-color fluorescence in situ hybridization and polymerase chain reaction in azoospermic patients. Genet Mol Res 2015; 14:14488-95. [PMID: 26600507 DOI: 10.4238/2015.november.18.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Y chromosomal microdeletions at the azoospermia factor locus and chromosome abnormalities have been implicated as the major causes of idiopathic male infertility. A marker chromosome is a structurally abnormal chromosome in which no part can be identified by cytogenetics. In this study, to identify the origin of the marker chromosomes and to perform a genetic diagnosis of patients with azoospermia, two-color fluorescence in situ hybridization (FISH) and polymerase chain reaction (PCR) techniques were carried out. The marker chromosomes for the two patients with azoospermia originated in the Y chromosome; it was ascertained that the karyotype of both patients was 46,X, ish del(Y)(q11)(DYZ3+, DXZ1-). The combination of two-color FISH and PCR techniques is an important method for the identification of the origin of marker chromosomes. Thus, genetic counseling and a clear genetic diagnosis of patients with azoospermia before intracytoplasmic sperm injection or other clinical managements are important.
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Affiliation(s)
- C L Wei
- Key Laboratory of Epigenetics and Oncology, Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan Province, China
| | - J L Cheng
- Key Laboratory of Epigenetics and Oncology, Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan Province, China
| | - W C Yang
- Key Laboratory of Epigenetics and Oncology, Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan Province, China
| | - L Y Li
- Insistitute of Reproduction and Stem Cell Engineering, Xiangya School of Medicine, Central South University, Changsha, Hunan Province, China
| | - H C Cheng
- Insistitute of Reproduction and Stem Cell Engineering, Xiangya School of Medicine, Central South University, Changsha, Hunan Province, China
| | - J J Fu
- Key Laboratory of Epigenetics and Oncology, Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan Province, China
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17
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Yang WC, Zhu L, Zhou BX, Tania S, Zhou Q, Khan MA, Fu XL, Cheng JL, Lv HB, Fu JJ. Establishment and rapid detection of a heterozygous missense mutation in the CACNA1F gene by ARMS technique with double-base mismatched primers. Genet Mol Res 2015; 14:11480-7. [PMID: 26436388 DOI: 10.4238/2015.september.25.14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Retinitis pigmentosa (RP) is a retinal degenerative disorder that often causes complete blindness. Mutations of more than 50 genes have been identified as associated with RP, including the CACNA1F gene. In a recent study, by employing next-generation sequencing, we identified a novel mutation in the CACNA1F gene. In this study, we used the amplification refractory mutation system (ARMS) and identified a single nucleotide change c.1555C>T in exon 13 of the CACNA1F gene, leading to the substitution of arginine by tryptophan (p.R519W) in a Chinese individual affected by RP. This study actually confirms this novel mutation, and establishes the ARMS technique for the detection of mutations in RP.
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Affiliation(s)
- W C Yang
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - L Zhu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - B X Zhou
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - S Tania
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - Q Zhou
- Department of Ophthalmology, Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan, China
| | - M A Khan
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - X L Fu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - J L Cheng
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - H B Lv
- Department of Ophthalmology, Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan, China
| | - J J Fu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
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18
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Hu XM, Xue LW, Zhao GQ, Yang WC. A hetero trinuclear manganese(III)-iron(II) complex derived from N,N′-bis(5-chlorosalicylidene)-1,2-diaminoethane: Synthesis, crystal structure, and antimicrobial activity. RUSS J COORD CHEM+ 2015. [DOI: 10.1134/s1070328415080011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Hu XM, Xue LW, Zhao GQ, Yang WC. Synthesis, structures, and biological activity of terbium(III) and cobalt(III) complexes derived from tripodal Schiff bases. RUSS J COORD CHEM+ 2015. [DOI: 10.1134/s1070328415030045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Xin YP, Zan LS, Liu YF, Tian WQ, Wang HB, Cheng G, Li AN, Yang WC. Genetic diversity of Y-short tandem repeats in Chinese native cattle breeds. Genet Mol Res 2014; 13:9578-87. [PMID: 25501167 DOI: 10.4238/2014.november.14.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of this study is to use Y-chromosome gene polymorphism method to investigate regional differences in genetic variation and population evolution history of the Chinese native cattle breeds. Six Y-chromosome short tandem repeat (Y-STR) loci (UMN0929, UMN0108, UMN0920, INRA124, UMN2404, and UMN0103) were analyzed using 1016 healthy and heterogenetic males and 90 females of 9 native cattle breeds (Qinchuan, Jinnan, Zaosheng, Luxi, Nanyang, Jiaxian, Dabieshan, Yanbian, and Menggu) in China. Allele frequency and gene diversity were calculated for the various populations. The results indicated that Y-STRs in the 6 loci have polymorphisms and genetic diversity in Chinese cattle populations. The genetic diversity analysis revealed that the Chinese cattle populations have a close genetic relationship. The analysis of INRA124, UMN2404, and UMN0103 loci revealed the original history of Chinese cattle because of which cattle belonging to Bos taurus or Bos indicus could be determined. Interestingly, a declining zebu introgression was displayed from South to North and from East to West in the Chinese geographical distribution, which implied that cattle population from various regions of China had been subjected to somewhat different evolutionary history. This conclusion supported other evidences such as earlier archaeological, historical research, and blood protein polymorphism analysis.
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Affiliation(s)
- Y P Xin
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - L S Zan
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Y F Liu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - W Q Tian
- Yangling Vocational Technical College, Yangling, Shaanxi, China
| | - H B Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - G Cheng
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - A N Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - W C Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
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21
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Yang WC, Hsu CC, Liu FX. Financial Implications to Taiwan Health System from Changing the Dialysis Modality Mix. Value Health 2014; 17:A811-A812. [PMID: 27203065 DOI: 10.1016/j.jval.2014.08.556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- W C Yang
- Taipei Veterans General Hospital, Taipei, Taiwan
| | - C C Hsu
- National Health Research Institutes, Taipei, Taiwan
| | - F X Liu
- Baxter Healthcare Corporation, Deerfield, IL, USA
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Gui LS, Yang WC, Zhao CP, Wei SJ, Zhao ZD, Zan LS. Association of SIRT2 gene polymorphisms with body measurement and growth traits of Qinchuan cattle. Genet Mol Res 2014; 13:8834-44. [PMID: 25366774 DOI: 10.4238/2014.october.27.24] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Silent information regulator 2 (SIRT2), a member of the Sirtuin family of class III nicotinamide adenine dinucleotide-dependent protein deacetylases, plays an important role in senescence, metabolism, and apoptosis. This study was conducted to detect potential polymorphisms of the bovine SIRT2 gene and explore their relationships with meat quality and body measurement traits (BMTs) in Qinchuan cattle. Four single nucleotide polymorphisms (A7445G, C7711T, G17937A, and G20937A) in the fourth intron, fourth exon, ninth exon, and twelfth exon of the SIRT2 gene, respectively, were identified according to the sequencing results of 520 individuals of a Qinchuan cattle population. The genotypic distributions of both A7445G and G20937A were in agreement with the Hardy-Weinberg equilibrium (P < 0.05), whereas the other two mutations were not (0.05 < P < 0.01), based on the X(2) test. Association analysis indicated that the four loci were significantly correlated with several BMTs and meat quality traits. When in combination, the H1H1 (AA-CC-GG-CC) diplotypes showed better BMT and meat quality traits than those by other combinations. Collectively, the results show that SIRT2 is involved in the regulation of the growth and meat quality of cattle, suggesting that the SIRT2 gene may be a candidate gene for marker-assisted selection in the development of future breeding programs for Qinchuan cattle.
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Affiliation(s)
- L S Gui
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi China
| | - W C Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi China
| | - C P Zhao
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi China
| | - S J Wei
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi China
| | - Z D Zhao
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi China
| | - L S Zan
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi China
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Ko SH, Chiang KL, Kao HW, Chen LC, Ng CJ, Chen PY, Chen JY, Yang WC, Ng YY. Crystallization in transfer set before continuous ambulatory peritoneal dialysis initiation-three case reports. Perit Dial Int 2014; 34:244-5. [PMID: 24676746 DOI: 10.3747/pdi.2012.00344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- S H Ko
- Division of Nephrology1 Department of Medicine2 Department of Teaching3 Taipei Veterans General Hospital National Yang-Ming University School of Medicine Taipei, Taiwan
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Yang WC, Li SJ, Chen L, Yang LG. FSHR genotype affects estrogen levels but not pregnancy rates in Luxi cattle subjected to embryo transfer. Genet Mol Res 2014; 13:1563-9. [PMID: 24668630 DOI: 10.4238/2014.march.12.8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Follicle-stimulating hormone receptor (FSHR), which mediates the functioning of FSH, plays a central role in reproduction. We investigated bovine FSHR gene polymorphisms and analyzed their relationships with pregnancy rates after embryo transfer and with hormone concentrations on the day of embryo transfer. One reported SNP of FSHR, G-278A, located in the 5'-upstream region, was analyzed and three genotypes (GG, GA and AA) were detected in 132 Luxi cattle recipients. Statistical analysis revealed that recipients with the GG genotype had significantly higher estrogen levels on the day of embryo transfer than did GA and AA genotypes. There were no significant differences in pregnancy rates among genotypes, after embryo transfer. We conclude that variation at these loci of the FSHR gene has no significant effect on pregnancy rates in Luxi cattle.
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Affiliation(s)
- W C Yang
- College of Animal Science and Technology, Northwest A&F University, Shaanxi, China
| | - S J Li
- Beijing Dairy Center, Beijing, China
| | - L Chen
- Beijing Dairy Center, Beijing, China
| | - L G Yang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, China
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Chen YT, Yang WC, Chen TW, Lin CC. Trichosporon mucoides peritonitis in a continuous ambulatory peritoneal dialysis patient. Perit Dial Int 2014; 33:341-2. [PMID: 23660618 DOI: 10.3747/pdi.2012.00146] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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26
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Chang YC, Lee KH, Chen TH, Tsai PJ, Chen PY, Guo MC, Lin SA, Chen JY, Yang WC, Ng YY. A case of intraperitoneal fracture of a double-cuff Tenckhoff catheter. Perit Dial Int 2014; 34:132-4. [PMID: 24525604 DOI: 10.3747/pdi.2012.00239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Y C Chang
- Division of Nephrology1 Department of Medicine2 Department of Surgery3 Taipei Veterans General Hospital National Yang-Ming University School of Medicine Taipei, Taiwan
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Yang WC, Li SJ, Chen L, Yang LG. Polymorphism of the inhibin βA gene and its relationship with superovulation traits in Chinese Holstein cows. Genet Mol Res 2014; 13:269-75. [PMID: 24535853 DOI: 10.4238/2014.january.17.11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Inhibin is a major regulator of secretion of follicle-stimulating hormone, which is involved in follicular development and regulation of steroidogenesis in females. The objectives of this study were to detect polymorphisms of the bovine inhibin beta-A subunit (INHβA) gene and to evaluate its associations with superovulatory responses in 171 Chinese Holstein cows treated for superovulation. Polymerase chain reaction-restricted fragment length polymorphism revealed a C>T transition determining the StyI polymorphism at position 7639 in intron I of the bovine INHβA gene, and three genotypes (CC, CT, and TT) were detected. The frequencies of the three genotypes showed a tendency for CT > TT > CC, and this polymorphism was in Hardy-Weinberg equilibrium. Statistical analysis revealed no significant differences of least square means for superovulation traits among the three genotypes (P > 0.05). These results demonstrate, for the first time, that the detected loci of the INHβA gene have no significant effects on superovulation performance in Chinese Holstein cows.
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Affiliation(s)
- W C Yang
- College of Animal Science and Technology, Northwest A&F University, Shaanxi, China
| | - S J Li
- Beijing Amber Embryo Technology Co. Ltd., Beijing, China
| | - L Chen
- Beijing Amber Embryo Technology Co. Ltd., Beijing, China
| | - L G Yang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, China
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Xue LW, Li XW, Zhao GQ, Yang WC. Synthesis, structures, and antimicrobial activity of nickel(II) and zinc(II) complexes with Schiff bases derived from 3-bromosalicylaldehyde. RUSS J COORD CHEM+ 2013. [DOI: 10.1134/s1070328413110092] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Liu YC, Hsiao HH, Lin PM, Yang WC, Chang CS, Liu TC, Hsu JF, Yang MY, Lin SF. Prognostic implication of molecular aberrations in cytogenetically normal acute myeloid leukemia patients receiving allogeneic hematopoietic stem cell transplantation. Genet Mol Res 2013; 12:5414-23. [PMID: 24301914 DOI: 10.4238/2013.november.11.3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Different molecular aberrations can be discriminated into certain prognostic subgroups in cytogenetically normal acute myeloid leukemia (CN-AML) patients but their impact on allogeneic hematopoietic stem cell transplantation (allo-HSCT) remains controversial and studies from Asian populations are lacking. Forty-two adult non-M3 AML patients receiving allo-HSCT from 2002 to 2009 in southern Taiwan were retrospectively reviewed for survey, 23 (54.7%) of whom were CN-AML. NPM1, FLT3-ITD, and CEBPA were analyzed. After a median follow-up of 104 weeks (range, 8 to 384), patients in the good risk group (harboring either NPM1 or CEBPA mutation without concurrent FLT3-ITD) showed a borderline worse overall survival (OS) compared with the intermediate/poor risk group (P = 0.08). Interestingly, a poorer OS was found in patients with the CEBPA mutation (P = 0.003) but not the NPM1 mutation (P = 0.96). No OS difference was found between patients with or without FLT3-ITD (P = 0.15). In patients receiving allo-HSCT at first remission, there was no significant OS benefit in the good risk group (P = 0.33). In patients receiving allo-HSCT beyond first remission, disease status played a major role (P = 0.006), irrespective of molecular aberrations. Allo-HSCT in good risk patients should be carefully evaluated in Taiwanese, especially in patients with the CEBPA mutation. Conversely, allo-HSCT should be considered in first remission in patients with an intermediate/poor risk, where it may overcome the adverse impact of FLT3-ITD. Disease status remained a main issue in patients receiving allo-HSCT beyond first remission.
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Affiliation(s)
- Y C Liu
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
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Hu XM, Xue LW, Yang WC. Synthesis, crystal structure, and fluorescence property of a thiocyanato-bridged polymeric cadmium(II) complex derived from (1-pyridin-2-ylethylidene)pyridin-2-ylmethylamine. RUSS J COORD CHEM+ 2013. [DOI: 10.1134/s1070328413080022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ou SM, Lee SY, Chen JY, Cheng HW, Wei TH, Yu KW, Lin WM, King KL, Yang WC, Ng YY. First identification of Gordonia sputi in a continuous ambulatory peritoneal dialysis patient with Peritonitis. Perit Dial Int 2013; 33:107-8. [PMID: 23349205 DOI: 10.3747/pdi.2012.00030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Tang KQ, Yang WC, Zhang XX, Yang LG. Effects of polymorphisms in the bovine growth differentiation factor 9 gene on sperm quality in Holstein bulls. Genet Mol Res 2013; 12:2189-95. [PMID: 23884762 DOI: 10.4238/2013.july.4.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Members of the transforming growth factor-β (TGFβ) superfamily are critical regulators of germ cell development that act as extracellular ligands of the signal transduction pathways regulating proliferation, differentiation, apoptosis, and other aspects of cell behavior. Growth differentiation factor 9 (GDF9) is a member of the TGFβ superfamily that plays a critical role in ovarian follicular development and ovulation rate in females; however, its role in the testis has not been well elucidated. Therefore, in this study we investigated the effects of GDF9 mutations on the quality of fresh and frozen semen of Holstein bulls. Two reported single nucleotide polymorphisms of GDF9, A485TA and A625C, were analyzed in 129 Holstein bulls. Analysis of variance revealed that the A485T polymorphism had significant effects on the acrosome integrity rate (P < 0.05), whereas the A625T polymorphism was significantly associated with sperm concentration (P < 0.05). In addition, a significant additive effect on sperm concentration was detected for the A485T polymorphism (P < 0.05), whereas the polymorphisms A485TA and A625C had significant dominant effects on acrosome integrity rate and sperm motility in frozen semen, respectively (P < 0.05). This study is the first to show a significant association of GDF9 with sperm quality traits, and the results implied that GDF9 is involved in the initiation or maintenance of spermatogenesis; however, further verification is needed.
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Affiliation(s)
- K Q Tang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, China
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35
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Affiliation(s)
- S F Yang
- Division of Nephrology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
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36
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Wu YL, Chen LC, Sheu MH, Chen TH, Wu SC, Wu CL, Li SY, Yang WC, Ng YY. Peritoneal-uterine communication: a complication of prolonged embedding of a peritoneal catheter. ARCH ESP UROL 2012; 32:481-3. [PMID: 22859846 DOI: 10.3747/pdi.2011.00016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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37
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Tsai MT, Yang WC, Lin CC. Continuous ambulatory peritoneal dialysis-related exit-site infections caused by Achromobacter denitrificans and A. xylosoxidans. Perit Dial Int 2012; 32:362-3. [PMID: 22641747 DOI: 10.3747/pdi.2011.00207] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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39
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Yang WC, Tang KQ, Mei J, Zeng WB, Yang LG. Genetic diversity analysis of an indigenous Chinese buffalo breed and hybrids based on microsatellite data. Genet Mol Res 2011; 10:3421-6. [PMID: 22180069 DOI: 10.4238/2011.december.5.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Chinese native buffaloes have faced the threat of extinction, along with an increase in crossbreeding with domesticated river buffaloes; consequently, conservation of local buffalo genetic resources has become a priority. A Chinese native breed, Jianghan, is often crossed intentionally and unintentionally with imported breeds from India and Pakistan, Murrah, and Nili-Ravi. A total of 128 buffaloes of the breeds Jianghan, Murrah, and Nili-Ravi and their presumed hybrid offspring were genotyped for 10 microsatellite markers. Heterozygosity and Wright's F-statistics were calculated to determine the genetic variation in those populations. The observed average heterozygosities ranged from 0.836 (Murrah) to 0.986 (Jianghan), higher than the expected heterozygosities and all the inbreeding values within the populations were negative. The genetic distances between the presumed hybrid buffaloes and the two imported river type dairy buffalo breeds (Murrah and Nili-Ravi) were lower than with the native Jianghan, indicating strong contributions of the imported breeds to this presumed hybrid buffalo population. This information will be useful for the development of rational breeding for the dairy buffalo industry and for conservation strategies for the Jianghan buffalo.
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Affiliation(s)
- W C Yang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, PR China
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Lin SI, Yang WC. Effect of plantar desensitization on postural adjustments prior to step initiation. Gait Posture 2011; 34:451-6. [PMID: 21795046 DOI: 10.1016/j.gaitpost.2011.06.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Revised: 04/11/2011] [Accepted: 06/25/2011] [Indexed: 02/02/2023]
Abstract
Plantar cutaneous afferent provides information about the contact between the body and the support surface and could affect the anticipatory postural adjustments (APAs). This study investigated the effect of plantar desensitization on the APAs for step initiation. Twenty-five healthy young adults participated in this study and were instructed to begin walking as fast as possible under 4 plantar desensitization conditions, none (NoneD), and desensitization of the stepping, supporting or bilateral (BilD) plantar surfaces, with eyes open or closed. The desensitization was achieved by cold water immersion of the plantar surface for 15 min. Foot switches recorded the timing of the stepping events. Surface electromyography (EMG) recorded the activation of bilateral tibialis anterior. The center of pressure (COP) and ground reaction force (GRF) data were derived from the force platform on which the subject initiated walking. The results showed that during the anticipation phase, the peak COP displacement toward the stepping leg was significantly smaller in BilD than in unilateral desensitization, which in turn was smaller than in NoneD, regardless of vision. The time to reach the peak COP displacement was significantly sooner with plantar desensitization in the eyes open condition. The GRF, EMG and anteroposterior COP displacement or the timing of the stepping events was not affected by plantar desensitization. These findings indicate that plantar cutaneous afferent contributed to the control of the APAs for step initiation by scaling the displacement of the mediolateral COP displacement and loss of its sensitivity could not be compensated by visual inputs.
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Affiliation(s)
- S I Lin
- Department of Physical Therapy, National Cheng Kung University, Tainan, Taiwan.
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41
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Chen CF, You ZH, Yang WC, Lin CC. Hypokalaemic paralysis with seemingly pH-neutralized blood gas: liquorice-induced mineralocorticoid effect superimposed on renal tubular acidosis. Acta Clin Belg 2011; 66:403. [PMID: 22145284 DOI: 10.2143/acb.66.5.2062602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Yang WC, Tang KQ, Li SJ, Yang LG. Association analysis between variants in bovine progesterone receptor gene and superovulation traits in Chinese Holstein cows. Reprod Domest Anim 2011; 46:1029-34. [PMID: 21426415 DOI: 10.1111/j.1439-0531.2011.01780.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The objective of this study was to identify a predictor to forecast superovulation response on the basis of associations between superovulation performance and gene polymorphism. The PCR-RFLP method was applied to detect two reported single nucleotide polymorphisms (SNPs) of G59752C and T81637C (rs41614030) located in introns 3 and 4 of the bovine progesterone receptor (PGR) gene in 171 Chinese Holstein cows treated for superovulation and evaluate its associations with superovulation traits. In polymorphic locus 81637, all cows without superovulation response were g.81637TC and g.81637TT genotypes. Association analysis showed that these two SNPs had significant effects on the total number of ova (TNO) (p<0.05), and the T81637C polymorphism was significantly associated with the number of transferable embryos (p<0.05). In addition, significant additive effects (p<0.05) on TNO were detected in the polymorphisms of G59752C and T81637C. These results showed for the first time that the G59752C and T81637C polymorphisms in PGR gene were associated with superovulation traits and indicated that PGR gene can be used as a predictor for superovulation in Chinese Holstein cows.
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Affiliation(s)
- W C Yang
- Key lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, China
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Yang WC, Wang CW, Wang JC, Chang YC, Hsu HC, Nee TE, Chen LJ, He JH. Aligned Er-doped ZnO nanorod arrays with enhanced 1.54 microm infrared emission. J Nanosci Nanotechnol 2008; 8:3363-3368. [PMID: 19051881 DOI: 10.1166/jnn.2008.164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Vertically aligned Er-doped ZnO nanorod arrays with sharp and intense 1.54 microm infrared emission have been fabricated on Si substrates through a well controlled spin-coating and annealing process. The synthesis method is advantageous for synthesizing ZnO nanostructures free from structural defects, capability for large-scale production, minimum equipment requirement and product homogeneity. Er atoms were found to incorporate into ZnO lattice from XRD, ESCA, TEM, STEM/EDS and PL measurements. The single-crystal Er-doped nanorods maintained their high microstructural quality after annealing for 4 hr at 800 degreesC. The intensity of 1.54 microm infrared emission was found to be correlated with the deep level green emission. The enhanced luminescence intensity and best ever narrow wavelength distribution of Er-doped ZnO nanorod arrays at 1.54 microm emission will be conductive to applications in optoelectronic devices and optical communications.
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Affiliation(s)
- W C Yang
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 300 Taiwan, Republic of China
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Kaplun J, Fratila C, Ferenczi A, Yang WC, Lantos G, Fleckman AM, Schubart UK. Sequential pituitary MR imaging in Sheehan syndrome: report of 2 cases. AJNR Am J Neuroradiol 2008; 29:941-3. [PMID: 18296547 DOI: 10.3174/ajnr.a1016] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We present the evolution of pituitary changes in the cases of 2 patients with Sheehan syndrome as assessed by MR imaging. Both patients had severe postpartum hemorrhage, symptoms of pituitary gland apoplexy, and hypopituitarism. Sequential MR imaging demonstrated evidence of ischemic infarct in the pituitary gland with enlargement followed by gradual shrinkage during several months, to pituitary atrophy.
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Affiliation(s)
- J Kaplun
- Department of Medicine, Beth Israel Medical Center, University Hospital and Manhattan Campus for the Albert Einstein College of Medicine, New York, NY, USA
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Jian DY, Yang WC, Chen TW, Lin CC. Trichosporon asahii following polymicrobial infection in peritoneal dialysis-associated peritonitis. Perit Dial Int 2008; 28:100-101. [PMID: 18178957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
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46
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Yang WC, Hunter W, Spurlock F, Gan J. Bioavailability of permethrin and cyfluthrin in surface waters with low levels of dissolved organic matter. J Environ Qual 2007; 36:1678-1685. [PMID: 17940268 DOI: 10.2134/jeq2007.0164] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Pyrethroids are widely used insecticides in both agricultural and urban environments, and their potential movement to surface streams and toxicity to susceptible aquatic species is an emerging concern. Natural surface waters usually contain low levels of dissolved organic matter (DOM). Limited data have shown that DOM preparations can significantly alter the bioavailability and toxicity effects of pyrethroids. However, the importance of these effects in natural waters has not been investigated. In this study we measured uptake and acute toxicity of permethrin and cyfluthrin by Daphnia species in 15 surface water samples. Low levels of DOM (3-20 mg L(-1)) inhibited cyfluthrin uptake by Daphnia magna and acute toxicity to Ceriodaphnia dubia in most samples. For permethrin, the effects of DOM on bioavailability and toxicity were generally not significant. The effects of DOM on bioavailability of cyfluthrin could not be explained from the DOC concentration alone, suggesting that properties of DOM were also important in regulating bioavailability. Regression of K DOC with selected DOM properties revealed significant dependence of K DOC on the carboxylic acid content of DOM. Moreover, concentrations sensed by solid-phase microextraction (SPME) fibers were well correlated with the observed changes in bioaccumulation by D. magna and acute toxicity to C. dubia. Therefore, selective sampling methods such as SPME may be used for measuring the bioavailable concentrations of pyrethroids in waters with naturally occurring DOM levels and predicting the actual toxicity effects.
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Affiliation(s)
- W C Yang
- Dep. of Environmental Sciences, University of California, Riverside, CA 92521, USA
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Liu YL, Fann CSJ, Liu CM, Chang CC, Yang WC, Hung SI, Yu SL, Hwang TJ, Hsieh MH, Liu CC, Tsuang MM, Wu JY, Jou YS, Faraone SV, Tsuang MT, Chen WJ, Hwu HG. More evidence supports the association of PPP3CC with schizophrenia. Mol Psychiatry 2007; 12:966-74. [PMID: 17339875 DOI: 10.1038/sj.mp.4001977] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Calcineurin is a calcium/calmodulin-dependent protein phosphatase composed of two subunits, a regulatory subunit of calcineurin B (CNB) and a catalytic subunit of calcineurin A (CNA). PPP3CC is the gamma isoform of CNA located at the chromosome 8p21.3 region. To evaluate the association between PPP3CC and schizophrenia in the Taiwanese population, 10 single nucleotide polymorphism (SNP) markers across the gene were genotyped by the method of MALDI-TOF in 218 schizophrenia families with at least two affected siblings. One SNP (rs2272080) located around the exon 1 untranslated region was nominally associated with schizophrenia (P=0.024) and significantly associated with the expression of PPP3CC in lymphoblast cell line; the TT and TG genotype had significantly higher relative expression levels than the GG genotype (P=0.0012 and 0.015, respectively). In further endophenotype stratification, the single locus of rs2272080 and the haplotypes of both two-SNP haplotype (rs7833266-rs2272080) and seven-SNP haplotype (rs2461491-rs2469758-rs2461489-rs2469770-rs2449340-rs1482337-rs2252471) showed significant associations with the subgroup of schizophrenia with deficits of the sustained attention as tested by the continuous performance test (CPT, P<0.05) and the executive functioning as tested by the Wisconsin Card Sorting Test (WCST, P<0.05). The results suggest that PPP3CC gene may be a true susceptibility gene for schizophrenia.
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Affiliation(s)
- Y L Liu
- Division of Mental Health and Substance Abuse Research, National Health Research Institutes, Taipei, Taiwan
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Klibanov AL, Rychak JJ, Yang WC, Alikhani S, Li B, Acton S, Lindner JR, Ley K, Kaul S. Targeted ultrasound contrast agent for molecular imaging of inflammation in high-shear flow. Contrast Media Mol Imaging 2006; 1:259-66. [PMID: 17191766 DOI: 10.1002/cmmi.113] [Citation(s) in RCA: 136] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Targeted ultrasound contrast materials (gas-filled microbubbles carrying ligands to endothelial selectins or integrins) have been investigated as potential molecular imaging agents. Such microbubbles normally exhibit good targeting capability at the slower flow conditions. However, in the conditions of vigorous flow, binding may be limited. Here, we describe a microbubble capable of efficient binding to targets both in slow and fast flow (exceeding 4 dyne/cm(2) wall shear stress) using a clustered polymeric form of the fast-binding selectin ligand sialyl Lewis(X). Microbubbles were prepared from decafluorobutane gas and stabilized with a monolayer of phosphatidylcholine, PEG stearate and biotin-PEG-lipid. Biotinylated PSLe(x) (sialyl Lewis(X) polyacrylamide) or biotinylated anti-P-selectin antibody (RB40.34) was attached to microbubbles via a streptavidin bridge. In a parallel plate flow chamber targeted adhesion model, PSLe(x) bubbles demonstrated specific adhesion, retention and slow rolling on P-selectin-coated plates. Efficiency of firm targeted adhesion to a P-selectin surface (140 molecules/microm(2)) was comparable for antibody-carrying bubbles and PSLe(x)-targeted bubbles at 0.68 dyne/cm(2) shear stress. At fast flow (4.45 dyne/cm(2)), PSLe(x)-targeted bubbles maintained their ability to bind, while antibody-mediated targeting dropped more than 20-fold. At lower surface density of P-selectin (7 molecules/microm(2)), targeting via PSLe(x) was more efficient than via antibody under all the flow conditions tested. Negative control casein-coated plates did not retain bubbles in the range of flow conditions studied. To confirm echogenicity, targeted PSLe(x)-bubbles were visualized on P-selectin-coated polystyrene plates by ultrasound imaging with a clinical scanner operated in pulse inversion mode; control plates lacking targeted bubbles did not show significant acoustic backscatter. In vivo, in a murine model of inflammation in the femoral vein setting, targeting efficacy of intravenously administered PSLe(x)-microbubbles was comparable with targeting mediated by anti-P-selectin antibody, and significantly exceeded the accumulation of non-targeted control bubbles. In the inflamed femoral artery setting, PSLe(x)-mediated microbubble targeting was superior to antibody-mediated targeting.
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Affiliation(s)
- A L Klibanov
- University of Virginia, Charlottesville, VA 22908-0158, USA.
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Chiang SS, Chen JB, Yang WC. Lanthanum carbonate (Fosrenol®) efficacy and tolerability in the treatment of hyperphosphatemic patients with end-stage renal disease. Clin Nephrol 2005; 63:461-70. [PMID: 15960148 DOI: 10.5414/cnp63461] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
AIMS High serum phosphorus levels are a common problem in patients receiving long-term dialysis treatment. Lanthanum carbonate (Fosrenol) is a new non-aluminum, non-calcium phosphate binder developed for the treatment of hyperphosphatemia in patients with end-stage renal disease (ESRD). We report data from a recent trial, which, for the first time, assessed the efficacy and tolerability of lanthanum carbonate treatment, compared with placebo, in Chinese patients with ESRD. PATIENTS AND METHODS Following a one- to three-week washout phase and a four-week, open-label lanthanum carbonate dose-titration phase, male and female hemodialysis patients were randomized (1:1) to receive either lanthanum carbonate or placebo for four weeks. The primary efficacy parameter of the study was the control of serum phosphorus levels (< or =1.8 mmol/l [< or = 5.6 mg/dl]). Secondary endpoints included the profile of serum phosphorus during titration and parathyroid hormone, calcium, and calcium x phosphorus (Ca x P) product levels. The safety and tolerability of lanthanum carbonate were assessed by monitoring adverse events throughout the study. RESULTS Mean serum phosphorus level at the end of washout was 2.5 +/- 0.5 mmol/l (7.7 +/- 1.5 mg/dl; n=73), and there was no evidence of a difference in levels between the treatment groups pre-randomization. At the end of the study, lanthanum carbonate-treated patients had significantly lower phosphorus levels (1.6 +/- 0.5 mmol/l [5.1 +/- 1.5 mg/dl]; n=30) than those receiving placebo (2.3 +/- 0.4 mmol/l [7.2 +/- 1.3 mg/dl]; n=31; p < 0.001). In addition, a significantly higher proportion of patients receiving lanthanum carbonate had controlled serum phosphorus levels (60%) compared with the placebo group (10%; p < 0.001). Ca x P product levels were also significantly lower in the lanthanum carbonate group at the end of randomized treatment (p < 0.001). Lanthanum carbonate was well tolerated; only one serious adverse event was reported, which was unrelated to treatment. CONCLUSIONS Lanthanum carbonate was shown to be an effective and well-tolerated phosphate binder for the treatment of hyperphosphatemia in Chinese patients with ESRD. This finding supports the results of previous US and European studies, which have also shown that lanthanum carbonate treatment effectively controls serum phosphorus levels.
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Affiliation(s)
- S S Chiang
- Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan, ROC
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