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Tan W, Zhou P, Huang X, Liao R, Wang X, Wu Y, Ni Z, Shi T, Yu X, Zhang H, Ma C, Gao F, Ma Y, Bai Y, Hayat F, Omondi OK, Coulibaly D, Gao Z. Haplotype-resolved genome of Prunus zhengheensis provides insight into its evolution and low temperature adaptation in apricot. Hortic Res 2024; 11:uhae103. [PMID: 38689698 PMCID: PMC11059810 DOI: 10.1093/hr/uhae103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 03/31/2024] [Indexed: 05/02/2024]
Abstract
Prunus zhengheensis, an extremely rare population of apricots, originated in warm South-East China and is an excellent material for genetic breeding. However, most apricots and two related species (P. sibirica, P. mandshurica) are found in the cold northern regions in China and the mechanism of their distribution is still unclear. In addition, the classification status of P. zhengheensis is controversial. Thus, we generated a high-quality haplotype-resolved genome for P. zhengheensis, exploring key genetic variations in its adaptation and the causes of phylogenetic incongruence. We found extensive phylogenetic discordances between the nuclear and organelle phylogenies of P. zhengheensis, which could be explained by incomplete lineage sorting. A 242.22-Mb pan-genome of the Armeniaca section was developed with 13 chromosomal genomes. Importantly, we identified a 566-bp insertion in the promoter of the HSFA1d gene in apricot and showed that the activity of the HSFA1d promoter increased under low temperatures. In addition, HSFA1d overexpression in Arabidopsis thaliana indicated that HSFA1d positively regulated plant growth under chilling. Therefore, we hypothesized that the insertion in the promoter of HSFA1d in apricot improved its low-temperature adaptation, allowing it to thrive in relatively cold locations. The findings help explain the weather adaptability of Armeniaca plants.
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Affiliation(s)
- Wei Tan
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Pengyu Zhou
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiao Huang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Ruyu Liao
- Institute of Fruit, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China
| | - Xiaoan Wang
- Institute of Fruit, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China
| | - Yaoyao Wu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhaojun Ni
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Ting Shi
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaqing Yu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Huiqin Zhang
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Chengdong Ma
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Feng Gao
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Yufan Ma
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Yang Bai
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Faisal Hayat
- Department of Pomology, College of Horticulture, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Ouma Kenneth Omondi
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Department of Crops, Horticulture and Soils, Faculty of Agriculture, Egerton University, P.O. Box 536, Egerton 20115, Kenya
| | - Daouda Coulibaly
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Department of Agricultural Sciences and Techniques-Horticulture, Rural Polytechnic Institute for Training and Applied Research (IPR/IFRA) of Katibougou, Koulikoro B.P.224, Mali
| | - Zhihong Gao
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
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Song HY, Zhao K, Pei YG, Chen HX, Wang XA, Jiang GL, Xie HJ, Chen D, Gong RG. Multi-omics analysis provides new insights into the changes of important nutrients and fructose metabolism in loquat bud sport mutant. Front Plant Sci 2024; 15:1374925. [PMID: 38606078 PMCID: PMC11008694 DOI: 10.3389/fpls.2024.1374925] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 03/18/2024] [Indexed: 04/13/2024]
Abstract
Bud sport is a common and stable somatic variation in perennial fruit trees, and often leads to significant modification of fruit traits and affects the breeding value. To investigate the impact of bud sport on the main metabolites in the fruit of white-fleshed loquat, we conducted a multi-omics analysis of loquat fruits at different developmental stages of a white-fleshed bud sport mutant of Dongting loquat (TBW) and its wild type (TBY). The findings from the detection of main fruit quality indices and metabolites suggested that bud sport resulted in a reduction in the accumulation of carotenoids, fructose, titratable acid and terpenoids at the mature stage of TBW, while leading to the accumulation of flavonoids, phenolic acids, amino acids and lipids. The comparably low content of titratable acid further enhances the balanced and pleasent taste profile of TBW. Expression patterns of differentially expressed genes involved in fructose metabolism exhibited a significant increase in the expression level of S6PDH (EVM0006243, EVM0044405) prior to fruit maturation. The comparison of protein sequences and promoter region of S6PDH between TBY and TBW revealed no structural variations that would impact gene function or expression, indicating that transcription factors may be responsible for the rapid up-regulation of S6PDH before maturation. Furthermore, correlation analysis helped to construct a comprehensive regulatory network of fructose metabolism in loquat, including 23 transcription factors, six structural genes, and nine saccharides. Based on the regulatory network and existing studies, it could be inferred that transcription factors such as ERF, NAC, MYB, GRAS, and bZIP may promote fructose accumulation in loquat flesh by positively regulating S6PDH. These findings improve our understanding of the nutritional value and breeding potential of white-fleshed loquat bud sport mutant, as well as serve as a foundation for exploring the genes and transcription factors that regulate fructose metabolism in loquat.
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Affiliation(s)
- Hai-yan Song
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, China
- Key Laboratory of Horticultural Crop Biology and Germplasm Creation in Southwestern China of the Ministry of Agriculture and Rural Affairs, Chengdu, Sichuan, China
- College of Life Science, Sichuan University, Chengdu, Sichuan, China
| | - Ke Zhao
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, China
- Key Laboratory of Horticultural Crop Biology and Germplasm Creation in Southwestern China of the Ministry of Agriculture and Rural Affairs, Chengdu, Sichuan, China
| | - Yan-Gang Pei
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- College of Life Science, Sichuan University, Chengdu, Sichuan, China
| | - Hong-xu Chen
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xiao-an Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Guo-Liang Jiang
- Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, China
- Key Laboratory of Horticultural Crop Biology and Germplasm Creation in Southwestern China of the Ministry of Agriculture and Rural Affairs, Chengdu, Sichuan, China
| | - Hong-Jiang Xie
- Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, China
- Key Laboratory of Horticultural Crop Biology and Germplasm Creation in Southwestern China of the Ministry of Agriculture and Rural Affairs, Chengdu, Sichuan, China
| | - Dong Chen
- Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, China
- Key Laboratory of Horticultural Crop Biology and Germplasm Creation in Southwestern China of the Ministry of Agriculture and Rural Affairs, Chengdu, Sichuan, China
| | - Rong-gao Gong
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
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Manzar GS, Rafei H, Kumar B, Shanley M, Acharya S, Liu B, Xu A, Wang XA, Islam S, Kaplan M, Basar R, Uprety N, Shrestha R, Garza LM, Li Y, Banerjee PP, Spiotto MT, Dabaja B, Rezvani K, Daher M. Radiation Therapy Sensitizes Head-and-Neck Cancer Cells to Killing by Chimeric Antigen Receptor (CAR)-NK Cells Targeting CD70. Int J Radiat Oncol Biol Phys 2023; 117:S167-S168. [PMID: 37784417 DOI: 10.1016/j.ijrobp.2023.06.268] [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) CAR-T cell therapy is limited by toxicity, high cost, logistical manufacturing issues in the autologous setting and risk of GVHD in the allogeneic setting. Substitution of T cells with NK cells opens the possibility for an allogeneic off-the-shelf product with a better safety profile. However, the inadequate efficacy of CAR-NK cells against solid tumors can be extrapolated from experience with CAR-T cells. There is limited but promising preclinical evidence that radiation therapy (RT) enhances CAR-T cell tumoricidal activity against solid tumors. However, there is no data examining the potential synergy between RT and CAR-NK cell therapy. MATERIALS/METHODS We engineered CAR-NK cells with CD27 receptor as extracellular domain to target its natural ligand CD70, which is overexpressed in head-and-neck cancers (HNSCC). CAR-NK cell killing was assessed real-time through xCELLigence cytotoxicity assays. CD70+ OQ01 human HNSCCs were used for most experiments. FaDu is a CD70- HNSCC (negative ctrl). UMRC3 is a CD70+ kidney cancer cell line (positive ctrl). CD70 expression pre- and post-RT was assessed by flow cytometry and Western blot. Ionizing RT was compared at 5 doses: 0, 1.75, 3.5, 7, and 14 Gy. A single dose of 3.5 Gy was used for most experiments. Post-radiation effects were generally assessed at 3 days or 9 days post-RT. Intracellular staining was used to assess NK cell expression of IFN-γ, CD107a, and TNF-α by flow cytometry. CD27/CD70 interaction blockade was through α-CD27 pre-treatment of CAR-NK cells. RESULTS OQ01 HNSCCs heterogeneously express CD70 and are killed by CD70 CAR-NK cells in vitro. Pre-conditioning low-dose RT of 3.5 Gy applied to OQ01 HNSCCs 3 days prior to coculture with NK cells enhances CD70 CAR-NK cell killing, with ∼30% increased cytotoxicity against the tumor cells. Low-dose RT by itself did not induce acute cytolysis. As a possible mechanism for the increased sensitivity of irradiated OQ01 cells to CD70 CAR-NK cells, we found that RT enhances CD70 expression among HNSCCs in a dose-dependent manner. There was no increase in NK cell expression of IFN-γ, CD107a, and TNF-α with exposure to irradiated target cells. CD27/CD70 blockade does not solely abrogate RT-induced sensitization toward CAR-NK cell killing. Despite RT induction of transient increased expression of CD70, which normalizes by 9 days post-RT, there is persistent increase in RT-synergized target cell killing even at this later timepoint. Thus, altogether, RT sensitizes CD70-expressing HNSCC cells to CAR-NK cell killing in vitro. CONCLUSION This work represents the first preclinical study to identify the synergy of RT and CAR-NK cell therapy in solid tumors and is the first demonstration of CAR-NK cell activity against human HNSCCs. We show significantly enhanced potency of CAR-NK cells against irradiated tumor cells in vitro. Collectively, this research will be vital to guide efforts expanding into other target antigens and tumor types.
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Affiliation(s)
- G S Manzar
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - H Rafei
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - B Kumar
- Department of Radiation Oncology City of Hope, Duarte, CA
| | - M Shanley
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - S Acharya
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - B Liu
- MD Anderson Cancer Center, Houston, TX
| | - A Xu
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - X A Wang
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - S Islam
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - M Kaplan
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - R Basar
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - N Uprety
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - R Shrestha
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - L Melo Garza
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Y Li
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - P P Banerjee
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - M T Spiotto
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - B Dabaja
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - K Rezvani
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - M Daher
- The University of Texas MD Anderson Cancer Center, Houston, TX
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Goodman CD, Garden AS, Wang H, Wang XA, Diao K, Lee A, Reddy J, Moreno AC, Spiotto MT, Fuller CD, Rosenthal DI, Ferrarotto R, Raza SM, Su SY, Hanna EY, DeMonte F, Phan J. Fractionated Stereotactic Radiotherapy in the Management of Dural Recurrence of Olfactory Neuroblastoma. Int J Radiat Oncol Biol Phys 2023; 117:e585-e586. [PMID: 37785774 DOI: 10.1016/j.ijrobp.2023.06.1929] [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) Treatment protocols for dural recurrence among esthesioneuroblastoma patients have not been standardized. We assess the outcomes of fractionated stereotactic radiotherapy (FSR) for patients with olfactory neuroblastoma (ONB) dura-based recurrences. MATERIALS/METHODS We identified ONB patients with dura-based recurrences treated with FSR after prior radiotherapy who were enrolled between 2013 and 2022 in our prospective head and neck reirradiation and skull base registries. In-field tumor control (within 2 cm of prescribed radiotherapy volume) and out-of-field tumor control (non-contiguous or contralateral dura, nodal, or distant metastases) were analyzed. RESULTS Thirteen patients with 28 dural lesions were included in this analysis. All patients were initially treated with surgery to their primary paranasal sinus disease; 69% with a craniofacial approach followed by adjuvant radiotherapy to a median dose of 63 Gy (range 60-72.4 Gy) prescribed to the resected tumor bed. Patients re-presented with dural recurrence at median 58.3 months (range 35.0 - 163.0 months) from completion of their initial treatment. Two patients underwent dural resections. On presentation of recurrence, 4 patients had 1 lesion treated, with a median of 2 lesions treated (range 1-4 lesions). All dural based tumors were treated with FSR to a median dose of 27 Gy in 3 fractions delivered QOD. 68Ga-DOTATATE PET/CT was utilized for FSR treatment planning in 31% of cases. The median follow up from FSR was 23.3 months (range: 13.1 - 51.6 months). The 1-year overall survival and progression free survival was 75% and 38%, respectively. The 1- and 2-year in-field control rate was 85% and 75%, respectively. Among treated lesions, 25 of 28 (89%) responded or remained stable following FSR. Two patients (3 lesions) had evidence of in-field radiographic progression at 17 and 9 months, respectively. Five patients (38%) experienced progression in the contralateral or non-contiguous dura, and 5 patients (38%) developed distant metastases. The overall out-of-field progression rate was 58% at 1 year. There was no grade 3 or higher toxicity observed. Three patients (23%) developed asymptomatic changes on MRI consistent with brain necrosis, all of which occurred in a previously irradiated region. CONCLUSION In the largest single institution study of FSR reirradiation for ONB dural recurrence to date, high local control rates with minimal toxicity are attainable. However, subsequent out-of-field dural recurrences and/or distant metastases remain problematic.
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Affiliation(s)
- C D Goodman
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - A S Garden
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - H Wang
- Department of Radiation Physics, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - X A Wang
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - K Diao
- University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - A Lee
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - J Reddy
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - A C Moreno
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - M T Spiotto
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - C D Fuller
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - D I Rosenthal
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - R Ferrarotto
- Department of Thoracic Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - S M Raza
- Department of Neurosurgery, University of Texas MD Anderson Cancer Center, Houston, TX
| | - S Y Su
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - E Y Hanna
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - F DeMonte
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - J Phan
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
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Yoder AK, Netherton T, Wang XA, Lim TY, Wang H, Luo D, Wang C, Thrower S, Farooqi A, Mitra D, Bishop AJ, Guadagnolo BA. Evaluating the Utility of Traditional Bowel Dose Constraints when Treating Abdominal and Pelvic Sarcomas with Preoperative Radiation Therapy. Int J Radiat Oncol Biol Phys 2023; 117:e353-e354. [PMID: 37785222 DOI: 10.1016/j.ijrobp.2023.06.2431] [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) Abdominopelvic soft tissue sarcomas (AP-STS) are selectively treated with preoperative radiation therapy (RT) followed by surgery. Due to their rarity, most bowel dose constraints are extrapolated from dosimetric studies for other abdominal or pelvic malignancies where concurrent chemotherapy is often given in addition to RT. We sought to investigate associations between dosimetric bowel constraints and the risk for developing acute and long-term toxicities in patients who received preoperative RT for AP-STS. MATERIALS/METHODS We performed a retrospective review of patients treated at a tertiary cancer center for non-metastatic AP-STS between 2005 and 2020. Dosimetric parameters for the "bowel bag" organ at risk structure were extracted for each patient. Chi-Square or Fisher's Exact Test, where appropriate, was utilized to compare the proportion of patients who exceeded constraints to the bowel bag contour as per the consensus RT retroperitoneal sarcoma guidelines, and the development of acute and long-term toxicities. RESULTS We identified 39 patients with available dosimetric data. The median follow-up was 34 months (IQR 20-47). Approximately half of the tumors were located in the pelvis (n = 20, 51%), and the majority were treated with IMRT/VMAT (n = 35, 90%). 31 patients (80%) presented with de novo disease, and 20% (n = 8) were recurrent presentations but had not received prior RT. The most common histology was leiomyosarcoma (n = 15, 38%), followed by de-differentiated liposarcoma (n = 8, 21%). The median bowel max dose (defined as D0.1cc) was 5309cGy [IQR 5262-5830]. Thirteen patients (33%) exceeded the volumetric V15 Gy <830cm3 bowel bag constraint, and 18 (46%) exceeded the V45 Gy ≤ 195cm3 bowel bag constraint. Overall, 17 patients (44%) had acute grade 1 diarrhea, and 11 (28%) had grade 1-2 nausea. Five patients (13%) had long-term radiation-related toxicities, including 1 patient who developed an enterocutaneous fistula. There was no association between exceeding V15 Gy>830 cm3 (p = 0.31) or V45 Gy≥195cm3 (p = 0.65) bowel bag constraints and developing a long-term RT toxicity. Similarly, exceeding V15 Gy>830 cm3 or V45 Gy≥195cm3 did not lead to increased risks of developing acute diarrhea, nausea, or any other acute RT toxicity (all p>0.05). CONCLUSION Traditional volumetric bowel bag dose constraints are frequently exceeded given the large size of AP-STS at presentation and thus the large RT target volumes. Despite a significant proportion of patients exceeding these constraints, these data suggest that RT is overall well-tolerated, and the risk of developing toxicities does not correlate with traditional bowel bag volumetric constraints. There are ongoing efforts to substantially expand this cohort for further investigation into the relationship between dosimetric data and bowel toxicities in order to identify more predictive bowel constraints that can be used during treatment planning of AP-STS.
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Affiliation(s)
- A K Yoder
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - T Netherton
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - X A Wang
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - T Y Lim
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - H Wang
- Department of Radiation Physics, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - D Luo
- MD Anderson Cancer Center, Houston, TX
| | - C Wang
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - S Thrower
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - A Farooqi
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - D Mitra
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - A J Bishop
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
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Peng SY, Liu YB, Qin RY, Hong DF, Li JT, Tan ZJ, Yu YQ, Zhong XS, Wang M, Wang XA. [The clinical value of radical resection of retroperitoneal lipo-lymphatic layer for pancreatic head cancer]. Zhonghua Wai Ke Za Zhi 2023; 61:989-994. [PMID: 37767665 DOI: 10.3760/cma.j.cn112139-20230504-00191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
Objective: To investigate the clinical value of the novel approach,radical resection of the retroperitoneal lipo-lymphatic layer (RRRLLL),in the surgical treatment of resectable pancreatic head cancer. Methods: Between June 2020 and June 2022,a total of 221 patients with pancreatic head cancer underwent surgical treatment using the RRRLLL approach(RRRLLL group),while 107 patients received traditional surgical treatment(traditional group) in five high-volume pancreatic centers in China. Data from surgical technique and clinical perioperative outcomes,including lymph node harvested,surgical time,and complications,were analyzed. The RRRLLL group consisted of 144 males and 77 females with an age of (67.5±9.0) years(range:41.3 to 81.1 years). The traditional group included 71 males and 36 females,with an age of (66.3±8.1) years(range:45.1 to 79.2 years). Statistical analysis was performed using the K-S test,Z test,or χ2 test. Results: Pancreaticoduodenectomy was performed successfully in all patients,achieving R0 resection. RRRLLL group surgery required mobilization of retroperitoneal adipose and lymphatic tissues starting from the right edge of the inferior vena cava and extending to the left side,up to the superior mesenteric artery,down to the inferior mesenteric artery,and left to the left side of the aorta,including the perineural and lymphatic tissues around the superior mesenteric artery and the sheath of the mesenteric artery. However,the traditional group did not include the areas mentioned above in the scope of clearance. There were no statistically significant differences between the RRRLLL group and the traditional group in terms of age,sex,tumor size,T stage,and vascular invasion (all P>0.05). However,the number of lymph nodes harvested in the RRRLLL group was significantly higher at 28.7±9.0 (range: 18 to 39) compared to 18.2±8.0 (range: 12 to 21) in the traditional group (Z=-10.691,P<0.05). There were no statistically significant differences in the number of positive lymph nodes,N staging,and postoperative complications between the two groups. Conclusion: The RRRLLL approach improved lymph node dissection compared to the traditional approach,potentially leading to reduced recurrence rates.
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Affiliation(s)
- S Y Peng
- Department of Hepato-Biliary-Pancreatic Surgery,the Second Affiliated Hospital, Zhejiang University School of Medicine,Hangzhou 310006,China
| | - Y B Liu
- Department of Pancreatic-Biliary Surgery,Renji Hospital,Shanghai Jiaotong University School of Medicine,Shanghai 200127,China
| | - R Y Qin
- Department of Pancreatic-Biliary Surgery,Tongji Hospital,Tongji Medical College,Huazhong University of Science & Technology,Wuhan 430030,China
| | - D F Hong
- Department of Hepato-biliary-pancreatic Surgery,Sir Run Run Shaw Hospital,Zhejiang University School of Medicine,Hangzhou 310016,China
| | - J T Li
- Department of Hepato-Biliary-Pancreatic Surgery,the Second Affiliated Hospital, Zhejiang University School of Medicine,Hangzhou 310006,China
| | - Z J Tan
- Department of Hepato-Biliary-Pancreatic Surgery,Guangdong Provincial Hospital of Traditional Chinese Medicine,Guangzhou 510120,China
| | - Y Q Yu
- Department of Hepato-Biliary-Pancreatic Surgery,the Second Affiliated Hospital, Zhejiang University School of Medicine,Hangzhou 310006,China
| | - X S Zhong
- Department of Hepato-Biliary-Pancreatic Surgery,Guangdong Provincial Hospital of Traditional Chinese Medicine,Guangzhou 510120,China
| | - M Wang
- Department of Pancreatic-Biliary Surgery,Tongji Hospital,Tongji Medical College,Huazhong University of Science & Technology,Wuhan 430030,China
| | - X A Wang
- Department of Pancreatic-Biliary Surgery,Renji Hospital,Shanghai Jiaotong University School of Medicine,Shanghai 200127,China
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7
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Jiang C, Zeng S, Yang J, Wang X. Genome-Wide Identification and Expression Profiling Analysis of SWEET Family Genes Involved in Fruit Development in Plum ( Prunus salicina Lindl). Genes (Basel) 2023; 14:1679. [PMID: 37761819 PMCID: PMC10531292 DOI: 10.3390/genes14091679] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/20/2023] [Accepted: 08/24/2023] [Indexed: 09/29/2023] Open
Abstract
SWEETs (sugars will eventually be exported transporters) play a vital role in longer-distance sugar transportation, and thus control carbon flow and energy metabolism in plants. SWEET genes have been identified in various plant species, but their functions in fruit development remain uncharacterized. Here, we isolated 15 putative PsSWEETs from the Prunus salicina genome. For further analysis, comprehensive bioinformatics methods were applied to determine the gene structure, chromosome distribution, phylogeny, cis-acting regulatory elements, and expression profiles of PsSWEETs. qRT-PCR analysis suggested that these SWEETs might have diverse functions in the development of plum fruit. The relative expression levels of PsSWEET1 and PsSWEET9 were obviously higher in ripened fruit than the ones in other developmental stages, suggesting their possible roles in the transport and accumulation of sugars in plum fruit. Positive correlations were found between the expression level of PsSWEET3/10/13 and the content of sucrose, and the expression level of PsSWEET2 and the content of fructose, respectively, during the development of 'Furongli' fruit, suggesting their possible roles in the accumulation of sucrose and fructose. The current study investigated the initial genomic characterization and expression patterns of the SWEET gene family in plum, which could provide a foundation for the further understanding of the functional analysis of the SWEET gene family.
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Affiliation(s)
- Cuicui Jiang
- Fruit Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China; (S.Z.); (X.W.)
| | - Shaomin Zeng
- Fruit Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China; (S.Z.); (X.W.)
| | - Jun Yang
- College of Food and Bioengineering, Bengbu University, Bengbu 233030, China;
| | - Xiaoan Wang
- Fruit Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China; (S.Z.); (X.W.)
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8
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Peng SY, Jin Y, Li JT, Yu YQ, Cai XJ, Hong DF, Liang X, Liu YB, Wang XA. [Application of membrane anatomy in hepatopancreatobiliary and splenic surgery]. Zhonghua Wai Ke Za Zhi 2023; 61:535-539. [PMID: 37402679 DOI: 10.3760/cma.j.cn112139-20230220-00069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/06/2023]
Abstract
Understanding of a variety of membranous structures throughout the body,such as the fascia,the serous membrane,is of great importance to surgeons. This is especially valuable in abdominal surgery. With the rise of membrane theory in recent years,membrane anatomy has been widely recognized in the treatment of abdominal tumors,especially of gastrointestinal tumors. In clinical practice. The appropriate choice of intramembranous or extramembranous anatomy is appropriate to achieve precision surgery. Based on the current research results,this article described the application of membrane anatomy in the field of hepatobiliary surgery,pancreatic surgery,and splenic surgery,with the aim of blazed the path from modest beginnings.
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Affiliation(s)
- S Y Peng
- Department of hepatopancreatobiliary Surgery,Second Affiliated Hospital,Zhejiang University College of Medicine,Hangzhou 310009,China
| | - Y Jin
- Department of hepatopancreatobiliary Surgery,Second Affiliated Hospital,Zhejiang University College of Medicine,Hangzhou 310009,China
| | - J T Li
- Department of hepatopancreatobiliary Surgery,Second Affiliated Hospital,Zhejiang University College of Medicine,Hangzhou 310009,China
| | - Y Q Yu
- Department of hepatopancreatobiliary Surgery,Second Affiliated Hospital,Zhejiang University College of Medicine,Hangzhou 310009,China
| | - X J Cai
- Department of General Surgery,Zhejiang University,School of Medicine,Sir Run Run Shaw Hospital,Hangzhou 310016,China
| | - D F Hong
- Department of General Surgery,Zhejiang University,School of Medicine,Sir Run Run Shaw Hospital,Hangzhou 310016,China
| | - X Liang
- Department of General Surgery,Zhejiang University,School of Medicine,Sir Run Run Shaw Hospital,Hangzhou 310016,China
| | - Y B Liu
- Department of Biliary-Pancreatic Surgery,Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine,Shanghai 200092,China
| | - X A Wang
- Department of Biliary-Pancreatic Surgery,Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine,Shanghai 200092,China
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9
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Jiao B, Li R, Zhou H, Qing K, Liu H, Pan H, Lei Y, Fu W, Wang X, Xiao X, Liu X, Yang Q, Liao X, Zhou Y, Fang L, Dong Y, Yang Y, Jiang H, Huang S, Shen L. Neural biomarker diagnosis and prediction to mild cognitive impairment and Alzheimer's disease using EEG technology. Alzheimers Res Ther 2023; 15:32. [PMID: 36765411 PMCID: PMC9912534 DOI: 10.1186/s13195-023-01181-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 02/06/2023] [Indexed: 02/12/2023]
Abstract
BACKGROUND Electroencephalogram (EEG) has emerged as a non-invasive tool to detect the aberrant neuronal activity related to different stages of Alzheimer's disease (AD). However, the effectiveness of EEG in the precise diagnosis and assessment of AD and its preclinical stage, amnestic mild cognitive impairment (MCI), has yet to be fully elucidated. In this study, we aimed to identify key EEG biomarkers that are effective in distinguishing patients at the early stage of AD and monitoring the progression of AD. METHODS A total of 890 participants, including 189 patients with MCI, 330 patients with AD, 125 patients with other dementias (frontotemporal dementia, dementia with Lewy bodies, and vascular cognitive impairment), and 246 healthy controls (HC) were enrolled. Biomarkers were extracted from resting-state EEG recordings for a three-level classification of HC, MCI, and AD. The optimal EEG biomarkers were then identified based on the classification performance. Random forest regression was used to train a series of models by combining participants' EEG biomarkers, demographic information (i.e., sex, age), CSF biomarkers, and APOE phenotype for assessing the disease progression and individual's cognitive function. RESULTS The identified EEG biomarkers achieved over 70% accuracy in the three-level classification of HC, MCI, and AD. Among all six groups, the most prominent effects of AD-linked neurodegeneration on EEG metrics were localized at parieto-occipital regions. In the cross-validation predictive analyses, the optimal EEG features were more effective than the CSF + APOE biomarkers in predicting the age of onset and disease course, whereas the combination of EEG + CSF + APOE measures achieved the best performance for all targets of prediction. CONCLUSIONS Our study indicates that EEG can be used as a useful screening tool for the diagnosis and disease progression evaluation of MCI and AD.
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Affiliation(s)
- Bin Jiao
- grid.216417.70000 0001 0379 7164Department of Neurology, Xiangya Hospital, Central South University, Changsha, China ,grid.216417.70000 0001 0379 7164National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, China ,grid.216417.70000 0001 0379 7164Engineering Research Center of Hunan Province in Cognitive Impairment Disorders, Central South University, Changsha, China ,Hunan International Scientific and Technological Cooperation Base of Neurodegenerative and Neurogenetic Diseases, Changsha, China ,grid.216417.70000 0001 0379 7164Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
| | - Rihui Li
- grid.168010.e0000000419368956Center for Interdisciplinary Brain Sciences Research, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, CA USA ,Brainup Institute of Science and Technology, Chongqing, China
| | - Hui Zhou
- grid.216417.70000 0001 0379 7164Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Kunqiang Qing
- Brainup Institute of Science and Technology, Chongqing, China
| | - Hui Liu
- grid.216417.70000 0001 0379 7164Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Hefu Pan
- Brainup Institute of Science and Technology, Chongqing, China
| | - Yanqin Lei
- Brainup Institute of Science and Technology, Chongqing, China
| | - Wenjin Fu
- Brainup Institute of Science and Technology, Chongqing, China
| | - Xiaoan Wang
- Brainup Institute of Science and Technology, Chongqing, China
| | - Xuewen Xiao
- grid.216417.70000 0001 0379 7164Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Xixi Liu
- grid.216417.70000 0001 0379 7164Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Qijie Yang
- grid.216417.70000 0001 0379 7164Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Xinxin Liao
- grid.216417.70000 0001 0379 7164Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Yafang Zhou
- grid.216417.70000 0001 0379 7164Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Liangjuan Fang
- grid.216417.70000 0001 0379 7164Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Yanbin Dong
- Brainup Institute of Science and Technology, Chongqing, China
| | - Yuanhao Yang
- grid.1003.20000 0000 9320 7537Mater Research Institute, The University of Queensland, Woolloongabba, Queensland 4102 Australia
| | - Haiyan Jiang
- grid.216417.70000 0001 0379 7164Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Sha Huang
- grid.216417.70000 0001 0379 7164Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Lu Shen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China. .,National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, China. .,Engineering Research Center of Hunan Province in Cognitive Impairment Disorders, Central South University, Changsha, China. .,Hunan International Scientific and Technological Cooperation Base of Neurodegenerative and Neurogenetic Diseases, Changsha, China. .,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China. .,Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China.
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10
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Xu XS, Wang XA, Chen W, Liu YB. [The treatment strategies for complications after pancreaticoduodenectomy]. Zhonghua Yi Xue Za Zhi 2022; 102:3658-3662. [PMID: 36509535 DOI: 10.3760/cma.j.cn112137-20220506-01004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The most common complications after pancreaticoduodenectomy include pancreatic fistula, biliary fistula, delayed gastric emptying, bleeding, and abdominal infection. Although advances in surgery have led to a significant decrease in perioperative mortality in recent years, the risk of complications after pancreaticoduodenectomy remains. Thus, prevention and treatment of various complications are important to improve the prognosis of patients.
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Affiliation(s)
- X S Xu
- Department of Biliary-pancreatic Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - X A Wang
- Department of Biliary-pancreatic Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - W Chen
- Department of Biliary-pancreatic Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Y B Liu
- Department of Biliary-pancreatic Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
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11
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Zhao Z, Wang Y, Zou Q, Xu T, Tao F, Zhang J, Wang X, Shi CJR, Luo J, Xie Y. The spike gating flow: A hierarchical structure-based spiking neural network for online gesture recognition. Front Neurosci 2022; 16:923587. [PMID: 36408382 PMCID: PMC9667043 DOI: 10.3389/fnins.2022.923587] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 10/03/2022] [Indexed: 01/25/2023] Open
Abstract
Action recognition is an exciting research avenue for artificial intelligence since it may be a game changer in emerging industrial fields such as robotic visions and automobiles. However, current deep learning (DL) faces major challenges for such applications because of the huge computational cost and inefficient learning. Hence, we developed a novel brain-inspired spiking neural network (SNN) based system titled spiking gating flow (SGF) for online action learning. The developed system consists of multiple SGF units which are assembled in a hierarchical manner. A single SGF unit contains three layers: a feature extraction layer, an event-driven layer, and a histogram-based training layer. To demonstrate the capability of the developed system, we employed a standard dynamic vision sensor (DVS) gesture classification as a benchmark. The results indicated that we can achieve 87.5% of accuracy which is comparable with DL, but at a smaller training/inference data number ratio of 1.5:1. Only a single training epoch is required during the learning process. Meanwhile, to the best of our knowledge, this is the highest accuracy among the non-backpropagation based SNNs. Finally, we conclude the few-shot learning (FSL) paradigm of the developed network: 1) a hierarchical structure-based network design involves prior human knowledge; 2) SNNs for content-based global dynamic feature detection.
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Affiliation(s)
- Zihao Zhao
- School of Microelectronics, Fudan University, Shanghai, China,Alibaba DAMO Academy, Shanghai, China
| | - Yanhong Wang
- School of Microelectronics, Fudan University, Shanghai, China,Alibaba DAMO Academy, Shanghai, China
| | - Qiaosha Zou
- School of Microelectronics, Fudan University, Shanghai, China
| | - Tie Xu
- Alibaba Group, Hangzhou, China
| | | | | | - Xiaoan Wang
- BrainUp Research Laboratory, Shanghai, China
| | - C.-J. Richard Shi
- Department of Electrical and Computer Engineering, University of Washington, Seattle, WA, United States
| | - Junwen Luo
- Alibaba DAMO Academy, Shanghai, China,BrainUp Research Laboratory, Shanghai, China,*Correspondence: Junwen Luo
| | - Yuan Xie
- Alibaba DAMO Academy, Shanghai, China
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12
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Abstract
An increasing number of studies have been devoted to electroencephalogram (EEG) identity recognition since EEG signals are not easily stolen. Most of the existing studies on EEG person identification have only addressed brain signals in a single state, depending upon specific and repetitive sensory stimuli. However, in reality, human states are diverse and rapidly changing, which limits their practicality in realistic settings. Among many potential solutions, transformer is widely used and achieves an excellent performance in natural language processing, which demonstrates the outstanding ability of the attention mechanism to model temporal signals. In this paper, we propose a transformer-based approach for the EEG person identification task that extracts features in the temporal and spatial domains using a self-attention mechanism. We conduct an extensive study to evaluate the generalization ability of the proposed method among different states. Our method is compared with the most advanced EEG biometrics techniques and the results show that our method reaches state-of-the-art results. Notably, we do not need to extract any features manually.
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Affiliation(s)
- Yang Du
- Big Data Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yongling Xu
- Brainup Research Lab, Naolu Technology Co., Ltd., Beijing, 100124, China
| | - Xiaoan Wang
- Brainup Research Lab, Naolu Technology Co., Ltd., Beijing, 100124, China.
| | - Li Liu
- Big Data Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Pengcheng Ma
- Big Data Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
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Wang X, Qin H. TFF3 promotes pituitary tumor cell migration and angiogenesis via VEGFA. Acta Neurobiol Exp (Wars) 2022; 82:237-243. [DOI: 10.55782/ane-2022-022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Pituitary adenoma is a typical adult primary brain tumor and 35% of pituitary adenomas are invasive. The enhancement of
angiogenesis is essential for the spread and invasiveness of invasive pituitary adenoma. Thus, it is urgent to uncover the mechanism
and relevant biomolecular targets for the therapy and prognosis of pituitary adenomas. The HP75 cells were transfected with
si‑NC, si‑TFF3, pcDNA, and pcDNA‑TFF3 to investigate the effects of TFF3 on the proliferation, migration and invasion of pituitary
tumor cell. The protein level of TFF3 and HIF‑1α/VEGFA was determined by western blot. The transwell migration assay and
wound healing assay were used to investigate the influence of TFF3 on the cell migration and invasion of HP75 cells. The tumor
angiogenesis was determined by tube formation assay. The proliferation of HP75 cells was assessed by using MTT assay and
colony‑forming unit assay. The cell proliferation rate was separately enhanced and reduced remarkably in TFF3 overexpression
group and si‑TFF3 group. TFF3 could modulate the proliferation, migration and invasion ability of HP75 cells. Furthermore, TFF3
may play a oncogenic role in HP75 cells. Overexpression of TFF3 enhanced the number of branching points and network formation
in HP75 cells, suggesting the TFF3 had positive effects on cell angiogenesis. These results also disclosed a novel relationship
between TFF3 expression and the activation of the HIF‑1α/VEGFA signaling pathway. In summary, this study uncovered new insight
into the mechanisms of TFF3’s anti‑tumor activities in pituitary adenoma cells by investigating its effects on HIF‑1α/VEGFA signaling
pathway regulation.
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14
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Liu LG, Zhang YJ, Wang XA, Liu YB. [Advance in immunotherapy on biliary tract cancers]. Zhonghua Wai Ke Za Zhi 2021; 59:156-160. [PMID: 33378809 DOI: 10.3760/cma.j.cn112139-20200515-00382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Biliary tract cancers(BTC),including gallbladder cancer and cholangiocarcinoma,has the characteristics of low early diagnosis rate,complex anatomy,insensitivity to radiotherapy and chemotherapy, and poor prognosis.In recent years,immunotherapy as a new method,has made great progress in the treatment of advanced malignant tumors.Immunotherapy is gradually applied in the treatment of BTC,such as inhibitory agents targeting the immune checkpoint receptor pathway,adoptive immunotherapy and tumor vaccines.
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Affiliation(s)
- L G Liu
- Department of Biliary-Pancreatic Surgery,Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine;Shanghai Key Laboratory of Biliary Tract Disease Research; Shanghai Research Center of Biliary Tract Disease; State Key Laboratory for Oncogenes and Related Genes,Shanghai 200127,China
| | - Y J Zhang
- Department of Biliary-Pancreatic Surgery,Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine;Shanghai Key Laboratory of Biliary Tract Disease Research; Shanghai Research Center of Biliary Tract Disease; State Key Laboratory for Oncogenes and Related Genes,Shanghai 200127,China
| | - X A Wang
- Department of Biliary-Pancreatic Surgery,Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine;Shanghai Key Laboratory of Biliary Tract Disease Research; Shanghai Research Center of Biliary Tract Disease; State Key Laboratory for Oncogenes and Related Genes,Shanghai 200127,China
| | - Y B Liu
- Department of Biliary-Pancreatic Surgery,Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine;Shanghai Key Laboratory of Biliary Tract Disease Research; Shanghai Research Center of Biliary Tract Disease; State Key Laboratory for Oncogenes and Related Genes,Shanghai 200127,China
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15
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Ren T, Li YS, Geng YJ, Li ML, Wu XS, Wu WW, Wang XA, Shu YJ, Bao RF, Dong P, Gong W, Gu J, Wang XF, Lu JH, Mu JS, Pan WH, Zhang X, Zhang XL, Fei ZW, Zhang ZY, Wang Y, Cao H, Sun B, Cui YF, Zhu CF, Li B, Zheng LH, Qian YB, Liu J, Dang XY, Liu C, Peng SY, Quan ZW, Liu YB. [Analysis of treatment modalities and prognosis of patients with gallbladder cancer in China from 2010 to 2017]. Zhonghua Wai Ke Za Zhi 2020; 58:697-706. [PMID: 32878417 DOI: 10.3760/cma.j.cn112139-20200403-00279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Objective: To evaluate the clinical characteristics and prognosis of gallbladder cancer (GBC) patients in China. Methods: This retrospective multicenter cohort study enrolled 3 528 consecutive GBC patients diagnosed between January 2010 to December 2017 in 15 hospitals from 10 provinces. There were 1 345 (38.12%) males and 2 183 (61.88%) females.The age of diagnosis was (63.7±10.8) years old (range: 26 to 99 years old) .There were 213 patients (6.04%) in stage 0 to Ⅰ, whereas 1 059 (30.02%) in stage Ⅱ to Ⅲ, 1 874 (53.12%) in stage Ⅳ, and 382 (10.83%) unavailable. Surgery was performed on 2 255 patients (63.92%) . Three hundred and thirty-six patients received chemotherapy or radiotherapy (9.52%; of which 172 were palliative); 1 101 (31.21%) received only supportive treatment.The patient source, treatment and surgery, pathology, concomitant gallstone, and prognosis were analyzed. Results: Among the 3 528 GBC patients, 959 (27.18%) were from East China, 603 (17.09%) from East-North China, 1 533 (43.45%) from Central China, and 433(12.27%) from West China. Among the 1 578 resectable tumor, 665 (42.14%) underwent radical surgery, 913 (57.86%) underwent surgery that failed to follow the guidelines.Eight hundred and ninety-one (56.46%) patients were diagnosed before surgery, 254 (16.10%) during surgery, and 381 (24.14%) after surgery (time point of diagnosis couldn't be determined in 52 patients) .Among the 1 578 patients with resectable tumor, 759 (48.10%) had concomitant gallstone.Among the 665 patients underwent radical surgery, 69 (10.4%) showed positive resection margin, 510 (76.7%) showed negative resection margin, and 86 (12.9%) unreported margin status.The 5-year overall survival rate (5yOS) for the 3 528-patient cohort was 23.0%.The 5yOS for patients with resectable tumor was 39.6%, for patients with stage ⅣB tumor without surgery was 5.4%, and for patients with stage ⅣB tumor underwent palliative surgery was 4.7%. Conclusions: More than half GBC patients in China are diagnosed in stage Ⅳ.Curative intent surgery is valuable in improving prognosis of resectable GBC.The treatment of GBC needs further standardization.Effective comprehensive treatment for GBC is in urgent need.
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Affiliation(s)
- T Ren
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Y S Li
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Y J Geng
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - M L Li
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - X S Wu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - W W Wu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - X A Wang
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Y J Shu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - R F Bao
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - P Dong
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - W Gong
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - J Gu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - X F Wang
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - J H Lu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - J S Mu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - W H Pan
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - X Zhang
- Clinical Research Unit, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - X L Zhang
- Department of General Surgery, Shanghai Fengxian District Central Hospital, Shanghai 201499, China
| | - Z W Fei
- Department of General Surgery, Xinhua (Chongming) Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 202150, China
| | - Z Y Zhang
- Department of General Surgery, Shaoxing Second Hospital, Shaoxing 312000, Zhejiang Province, China
| | - Y Wang
- Department of Gastrointestinal Surgery, the First People's Hospital of Taicang, Taicang 215400, Jiangsu Province, China
| | - H Cao
- Department of Gastrointestinal Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, China
| | - B Sun
- Department of Hepato-Pancreato-Biliary Surgery and Key Laboratory of Hepatosplenic Surgery, Ministry of Education, the First Affiliated Hospital of Harbin Medical University, Harbin 150009, China
| | - Y F Cui
- Department of Pancreatobiliary Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
| | - C F Zhu
- Department of Hepato-Pancreato-Biliary Surgery, Changzhou the Second People's Hospital, Changzhou 213003, China
| | - B Li
- Department of Hepato-Pancreato-Biliary Surgery, Harbin Medical University Cancer Hospital, Harbin 250081, China
| | - L H Zheng
- Department of General Surgery, the First Affiliated Hospital of Nanchang University, Nanchang 330019, China
| | - Y B Qian
- Department of Hepato-Pancreato-Biliary Surgery, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - J Liu
- Department of Hepatobiliary Surgery, Shangdong Provincial Hospital, Jinan 250021, China
| | - X Y Dang
- Department of General Surgery, Shanxi Provincial Cancer Hospital, Taiyuan 030013, China
| | - C Liu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - S Y Peng
- Department of Hepato-Pancreato-Biliary Surgery, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Z W Quan
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Y B Liu
- Department of Pancreatobiliary Surgery, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Key Laborary of Biliary Tract Disease Research, and State Key Laboratory for Oncogenes and Related Genes, Shanghai 200127, China
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16
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Peng SY, Wang XA, Huang CY, Li JT, Hong DF, Liu YB, Cai XJ. [The new classifications of biliary tract diseases based on actual anatomy]. Zhonghua Wai Ke Za Zhi 2019; 57:412-417. [PMID: 31142064 DOI: 10.3760/cma.j.issn.0529-5815.2019.06.004] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In order to facilitate the treatment strategies for biliary tract injury, hilar cholangiocarcinoma, bile duct tumor thrombus, cholangiocellular carcinoma and bile duct cystic dilatation, many classifications have been made, even more than 10 types for one disease. Each type is represented by numbers or English alphabet, which are not only confusing but also difficult to remember. The Academician Mengchao Wu divided the liver into five sections and four segments base on its anatomy, this classification is very direct and visual, thus had been using till now. In order to overcome those complicated problems, it is considered to develop a new classification based on actual anatomic location similar to that for liver cancer, which is easy to remember and to directly determine the treatment strategy. All kinds of classifications have their own characteristics and advantages and disadvantages. This practical classifications avoid the complexity and may be useful for clinicians.
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Affiliation(s)
- S Y Peng
- Department of General Surgery, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - X A Wang
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - C Y Huang
- Department of General Surgery, Yuebei People's Hospital Affiliated to Shantou University Medical College, Shaoguan 512025, Guangdong Province, China
| | - J T Li
- Department of General Surgery, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - D F Hong
- Department of General Surgery, Sir Run Run Show Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Y B Liu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
| | - X J Cai
- Department of General Surgery, Sir Run Run Show Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
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Zhang L, Zhu Z, Li Y, Qian Z, Liu G, Wang X. Overall grazing tolerance index (overall GTI) is not an ideal predictor for describing a single-species tolerance to grazing. Ecol Evol 2019; 9:4087-4102. [PMID: 31015990 PMCID: PMC6468136 DOI: 10.1002/ece3.5038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 12/04/2018] [Accepted: 02/15/2019] [Indexed: 11/24/2022] Open
Abstract
Plants' pattern of compensatory growth is often used to intuitively estimate their grazing tolerance. However, this tolerance is sometimes measured by the overall grazing tolerance index (overall GTI), which assumes that tolerance is a multivariate linear function of various underlying mechanisms. Because the interaction among mechanisms is not independent, the grazing tolerance expression based on overall GTI may be inconsistent with that based on compensatory growth. Through a manipulative field experiment from 2007 to 2012, we measured the responses of 12 traits of Elymus nutans to clipping under different resource availabilities in an alpine meadow and explored the compensatory aboveground biomass and the overall GTI to assess the possible differences between the two expressions of tolerance. Our results showed that these two expressions of tolerance were completely opposite. The expression based on overall GTI was over-compensatory and did not vary with clipping and resource availability, while the expression based on compensatory aboveground biomass was under-compensatory and altered to over-compensation after fertilization. The over-expression of highly variable traits with extremely high negative mean GTI to defoliation damage, the influence of random errors contained in traits considered, and the doubling weight of functional redundant traits greatly inflated the overall GTI, which leads to the inconsistency of the two tolerance expressions. This inconsistency is also associated with the different determining mechanisms of the two tolerance expressions. Our data suggest that plants' grazing tolerance is not a multivariate linear function of traits or mechanisms that determine grazing tolerance; the overall GTI is only a measure of traits' variability to defoliation damage. Our findings highlight that the tolerance of E. nutans mainly depends on the response of traits with lower variability to defoliation, and the overall GTI is not an ideal predictor for describing a single-species tolerance to grazing.
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Affiliation(s)
- Lulu Zhang
- College of Life SciencesShaanxi Normal UniversityXi'anChina
| | - Zhihong Zhu
- College of Life SciencesShaanxi Normal UniversityXi'anChina
| | - Yingnian Li
- Northwest Institute of Plateau BiologyChinese Academy of SciencesXiningChina
| | - Zengqiang Qian
- College of Life SciencesShaanxi Normal UniversityXi'anChina
| | - Gang Liu
- College of Life SciencesShaanxi Normal UniversityXi'anChina
| | - Xiaoan Wang
- College of Life SciencesShaanxi Normal UniversityXi'anChina
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18
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Wang XA, Jiang GN. [Current status of lung transplantation in China: problems and perspectives]. Zhonghua Wai Ke Za Zhi 2017; 54:881-885. [PMID: 27916027 DOI: 10.3760/cma.j.issn.0529-5815.2016.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Despite rapid progress, clinical lung transplantation in China still lags far behind. A great challenge remains in donor lung utilization and perioperative medicine. It's really abnormal that we are so backward in lung transplantation when we have come up with the advanced world levels in thoracic surgery, pulmonology and critical care medicine. Our shortcomings were analyzed by comparing lung transplantation in China and in the advanced countries. The first problem is multidisciplinary teamwork. In the United States, a lung transplant team includes physician specialized in lung transplantation, thoracic surgeons, nurses, respiratory therapists and other specialists possibly needed. In contrast, our lung transplant teams are derived from thoracic surgery teams. Other specialists are invited for consultation just when thoracic surgeons are unable to deal with the tough issues in perioperative medicine. The low utilization and quality of donor lung also result from poor teamwork. The second problem is that we failed to integrate such advances as extra corporeal lung support and ex vivo lung perfusion into our lung transplant programs. In conclusion, the development of lung transplantation in China is dependent upon an initiative, multidisciplinary team approach.
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Affiliation(s)
- X A Wang
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
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Wu WG, Wu XS, Li ML, Wang XA, Liang HB, Liu YB. [Method and significance of specimens standardized pathological treatment in pancreaticoduodenectomy for pancreatic head cancer]. Zhonghua Wai Ke Za Zhi 2017; 55:37-40. [PMID: 28056252 DOI: 10.3760/cma.j.issn.0529-5815.2017.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Pancreatic ductal adenocarcinoma is a highly aggressive disease with a grim prognosis. Surgical resection offers the best chance for long-term survival. Negative-margin resection still remains the goal, the influence of margin status on outcomes in pancreatic head carcinoma remains controversial, as conflicting data have been plagued by a lack of standardization in R0 resection and margin definitions, pathologic analysis, and reporting. In contrast to common belief, a high rate of R1 resections in pancreatic cancer is not a marker of low-quality surgery but rather of high-quality pathology. The international pathological consensus of pancreatic head carcinoma is still needed to fully understand the prognostic value of margin status in order to optimize treatment strategy for this disease.
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Affiliation(s)
- W G Wu
- Department of General Surgery, Xinhua Hospital, Affiliated to Shanghai Jiaotong University, School of Medicine, Shanghai 200092, China
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20
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Tian L, Wang X. Role of nurse shrubs for restoration planting of two conifers in southeast of Mu Us Sandland, China. J Environ Biol 2015; 36:331-336. [PMID: 26536812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Two-year-old pine seedlings, Pinus tabulaeformis and Pinus sylvestris were planted under the canopies of three shrub species and in open areas to test for facilitation during seedling establishment in southeast of Mu Us Sandland in northern part of Shaanxi, China. Pine seedlings establishment were assessed three times within three consecutive growing seasons. Height, area and volume of shrubs were measured. Microclimate conditions (light intensity, air temperature and soil temperature and moisture) were recorded in four microhabitats. Near surface light intensity, air temperature and soil temperature were lower under shrubs, which led to higher soil moisture and pine seedlings under the canopy of shrub species. Pine seedlings survival was remarkably higher when planted under the canopy of shrub species (65.7% for P. tabulaeformis and 60.6% for P. sylvestris) as compared with open areas (22.4% for P. tabulaeformis and 38% for P. sylvestris). P. tabulaeformis with shade-tolerance trait expressed high survival of seedlings as compared to that of P. sylvestris seedlings under the canopy of shrub species (Tukey test, P < 0.05). Leguminous shrub (Caragana korshinskii and Amorpha fruticosa) showed continuously facilitation during moderate drought stress (summer 2012, 2013 and 2014), but dense and small shrub (Caragana korshinskii) reduced the establishment of seedlings possibly for light competition. Salix cheilophila showed a facilitation effect in growing seasons, but the effect of allelopathy led to high mortality of seedlings under their canopy. in addition, two pine growths were not inhibited when planted under three shrubs. In conclusions, nurse-shrub facilitation can be used as an effective restoration strategy in this sandland. However, use of shrubs as nurse plants depends on their canopy structure and ecological impacts; the selection of target species depends on their shade tolerance traits.
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Affiliation(s)
- Yijing Nie
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 People's Republic of China
- School of Materials Science and Engineering; Jiangsu University; 301 Xuefu Road Zhenjiang 212013 People's Republic of China
| | - Liangliang Qu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Guangsu Huang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Xiaoan Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Gengsheng Weng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 People's Republic of China
| | - Jinrong Wu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 People's Republic of China
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22
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Wang S, Wang X, Guo H, Fan W, Lv H, Duan R. Distinguishing the importance between habitat specialization and dispersal limitation on species turnover. Ecol Evol 2013; 3:3545-53. [PMID: 24223289 PMCID: PMC3797498 DOI: 10.1002/ece3.745] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 07/23/2013] [Accepted: 07/30/2013] [Indexed: 11/08/2022] Open
Abstract
Understanding what governs community assembly and the maintenance of biodiversity is a central issue in ecology, but has been a continuing debate. A key question is the relative importance of habitat specialization (niche assembly) and dispersal limitation (dispersal assembly). In the middle of the Loess Plateau, northwestern China, we examined how species turnover in Liaodong oak (Quercus wutaishanica) forests differed between observed and randomized assemblies, and how this difference was affected by habitat specialization and dispersal limitation using variation partitioning. Results showed that expected species turnover based on individual randomization was significantly lower than the observed value (P < 0.01). The turnover deviation significantly depended on the environmental and geographical distances (P < 0.05). Environmental and spatial variables significantly explained approximately 40% of the species composition variation at all the three layers (P < 0.05). However, their contributions varied among forest layers; the herb and shrub layers were dominated by environmental factors, whereas the canopy layer was dominated by spatial factors. Our results underscore the importance of synthetic models that integrate effects of both dispersal and niche assembly for understanding the community assembly. However, habitat specialization (niche assembly) may not always be the dominant process in community assembly, even under harsh environments. Community assembly may be in a trait-dependent manner (e.g., forest layers in this study). Thus, taking more species traits into account would strengthen our confidence in the inferred assembly mechanisms.
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Affiliation(s)
- Shixiong Wang
- College of Life Sciences, Shaanxi Normal UniversityXi'an, 710119, China
| | - Xiaoan Wang
- College of Life Sciences, Shaanxi Normal UniversityXi'an, 710119, China
| | - Hua Guo
- College of Life Sciences, Shaanxi Normal UniversityXi'an, 710119, China
| | - Weiyi Fan
- College of Life Sciences, Shaanxi Normal UniversityXi'an, 710119, China
| | - Haiying Lv
- College of Life Sciences, Shaanxi Normal UniversityXi'an, 710119, China
| | - Renyan Duan
- School of Life Sciences, Anqing Normal UniversityAnqing, 246011, China
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Wang X, Xiang K, Zhang D, Wu J, Huang G. Influence of Pretreatment Factors on Two-dimensional Correlation Dynamic Mechanical Spectroscopy Features. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.phpro.2013.07.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Affiliation(s)
- Jinrong Wu
- College of Polymer Science and
Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Guangsu Huang
- College of Polymer Science and
Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xiaoan Wang
- College of Polymer Science and
Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xiaojun He
- College of Polymer Science and
Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Ben Xu
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United
States
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25
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Affiliation(s)
- Zhiqing Su
- a State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu , People's Republic of China
| | - Zuming Jiang
- a State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu , People's Republic of China
| | - Guangsu Huang
- a State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu , People's Republic of China
| | - Li Li
- a State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu , People's Republic of China
| | - Xiaoan Wang
- a State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu , People's Republic of China
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26
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Qu Y, Huang G, Wang X, Li J. Study on the mechanism of the formation of polyhedral oligomeric silsesquioxanes by the 2D correlation infrared spectral. J Appl Polym Sci 2012. [DOI: 10.1002/app.36489] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Wang X, He X, Huang G, Wu J. Correlations between alkyl side chain length and dynamic mechanical properties of poly(n-alkyl acrylates) and poly(n-alkyl methacrylates). POLYMER 2012. [DOI: 10.1016/j.polymer.2011.11.059] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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28
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Zhou J, Xiao X, Yi H, Wang J, Wang X, Zhang Q. Upregulation of Gp96 Correlates with the Radiosensitivity and Five-Year Survival Rate of Nasopharyngeal Carcinoma. ACTA ACUST UNITED AC 2012; 74:164-71. [DOI: 10.1159/000338613] [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] [Received: 01/30/2012] [Accepted: 03/23/2012] [Indexed: 11/19/2022]
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29
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Wu J, Huang G, Wang X, He X, Lei H. Molecular dynamics in chlorinated butyl rubber containing organophilic montmorillonite nanoparticles. J Polym Res 2011. [DOI: 10.1007/s10965-011-9632-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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Wang X, Huang G, Wu J, Nie Y, He X. Using Two-Dimensional Correlation Dynamic Mechanical Spectroscopy to Detect Different Modes of Molecular Motions in the Glass−Rubber Transition Region in Polyisobutylene. J Phys Chem B 2011; 115:1775-9. [DOI: 10.1021/jp110890n] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaoan Wang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People’s Republic of China
| | - Guangsu Huang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People’s Republic of China
| | - Jinrong Wu
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People’s Republic of China
| | - Yijing Nie
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People’s Republic of China
| | - Xiaojun He
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, People’s Republic of China
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31
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He X, Wu J, Huang G, Wang X. Effect of Alkyl Side Chain Length on Relaxation Behaviors in Poly(n-alkyl Acrylates) and Poly(n-alkyl Methacrylates). J MACROMOL SCI B 2010. [DOI: 10.1080/00222341003648870] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Xiaojun He
- a College of Polymer Science and Engineering , State Key Laboratory of Polymer Material Engineering, Sichuan University , Chengdu, China
| | - Jinrong Wu
- a College of Polymer Science and Engineering , State Key Laboratory of Polymer Material Engineering, Sichuan University , Chengdu, China
| | - Guangsu Huang
- a College of Polymer Science and Engineering , State Key Laboratory of Polymer Material Engineering, Sichuan University , Chengdu, China
| | - Xiaoan Wang
- a College of Polymer Science and Engineering , State Key Laboratory of Polymer Material Engineering, Sichuan University , Chengdu, China
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32
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33
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Liu Y, Li YM, Tian RF, Liu WP, Fei Z, Long QF, Wang XA, Zhang X. The expression and significance of HIF-1α and GLUT-3 in glioma. Brain Res 2009; 1304:149-54. [DOI: 10.1016/j.brainres.2009.09.083] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2009] [Revised: 09/18/2009] [Accepted: 09/19/2009] [Indexed: 11/15/2022]
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34
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Duan R, Wang C, Wang XA, Zhu Z, Guo H. Differences in plant species diversity between conifer (Pinus tabulaeformis) plantations and natural forests in middle of the Loess plateau. RUSS J ECOL+ 2009. [DOI: 10.1134/s106741360907008x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [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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35
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Zhu ZH, Lundholm J, Li Y, Wang X. Response of Polygonum viviparum species and community level to long-term livestock grazing in alpine shrub meadow in Qinghai-Tibet Plateau. J Integr Plant Biol 2008; 50:659-672. [PMID: 18713406 DOI: 10.1111/j.1744-7909.2008.00676.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Grazing by domestic herbivores is generally recognized as a major ecological factor and an important evolutionary force in grasslands. Grazing has both extensive and profound effects on individual plants and communities. We investigated the response patterns of Polygonum viviparum species and the species diversity of an alpine shrub meadow in response to long-term livestock grazing by a field manipulative experiment controlling livestock numbers on the Qinghai-Tibet Plateau in China. Here, we hypothesize that within a range of grazing pressure, grazing can alter relative allocation to different plant parts without changing total biomass for some plant species if there is life history trade-offs between plant traits. The same type of communities exposed to different grazing pressures may only alter relative species' abundances or species composition and not vary species diversity because plant species differ in resistant capability to herbivory. The results show that plant height and biomass of different organs differed among grazing treatments but total biomass remained constant. Biomass allocation and absolute investments to both reproduction and growth decreased and to belowground storage increased with increased grazing pressure, indicating the increasing in storage function was attained at a cost of reducing reproduction of bulbils and represented an optimal allocation and an adaptive response of the species to long-term aboveground damage. Moreover, our results showed multiform response types for either species groups or single species along the gradient of grazing intensity. Heavy grazing caused a 13.2% increase in species richness. There was difference in species composition of about 18%-20% among grazing treatment. Shannon-Wiener (H') diversity index and species evenness (E) index did not differ among grazing treatments. These results support our hypothesis.
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Affiliation(s)
- Zhi-Hong Zhu
- College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China.
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36
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He J, Yan B, Yu B, Wang S, Wang X, Wang J, Zeng Y, Ran R, Wang Y. Fine adjustment of network in polymer network liquid crystal film employing RAFT polymerization. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22623] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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37
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He J, Yan B, Yu B, Bao R, Wang X, Wang Y. Effect of the structure of gelators on electro-optical properties of liquid crystal physical gels. J Colloid Interface Sci 2007; 316:825-30. [PMID: 17900599 DOI: 10.1016/j.jcis.2007.08.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2007] [Revised: 08/17/2007] [Accepted: 08/17/2007] [Indexed: 10/22/2022]
Abstract
Low molecular mass organic gelator (LMOG) as an important component of liquid crystal physical gel has a great influence on the electro-optical properties. In this paper, three analogues of amide gelator were synthesized and employed as LMOGs in nematic liquid crystal 5CB. Both hydrogen-bonding and pi-pi-stacking interactions in the gel phase were found to stabilize the self-assembled structure. It was observed that the morphology was highly dependent on the crystallinity of gelators, which was affected by the intensity of hydrogen bonding. The thicker fibril was obtained with higher crystallinity of LMOG, while the thinner fibril was obtained with lower crystallinity. Moreover, the electro-optical properties of liquid crystal physical gels were proposed to be related to the interaction between the fibrils and the liquid crystal molecules.
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Affiliation(s)
- Jie He
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, People's Republic of China
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38
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He J, Yan B, Wang S, Yu B, Wang X, Wang Y. RAFT Copolymerization as a means to enhance the electro-optical performance of polymer dispersed liquid crystal films. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/pola.22121] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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39
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Liu CF, Sun RC, Zhang AP, Ren JL, Wang XA, Qin MH, Chao ZN, Luo W. Homogeneous modification of sugarcane bagasse cellulose with succinic anhydride using a ionic liquid as reaction medium. Carbohydr Res 2007; 342:919-26. [PMID: 17324384 DOI: 10.1016/j.carres.2007.02.006] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2006] [Revised: 02/01/2007] [Accepted: 02/05/2007] [Indexed: 10/23/2022]
Abstract
The homogeneous chemical modification of sugarcane bagasse cellulose with succinic anhydride using 1-allyl-3-methylimidazolium chloride (AmimCl) ionic liquid as a reaction medium was studied. Parameters investigated included the molar ratio of succinic anhydride/anhydroglucose units in cellulose in a range from 2:1 to 14:1, reaction time (from 30 to 160min), and reaction temperature (between 60 and 110 degrees C). The succinylated cellulosic derivatives were prepared with a low degree of substitution (DS) ranging from 0.071 to 0.22. The results showed that the increase of reaction temperature, molar ratio of SA/AGU in cellulose, and reaction time led to an increase in DS of cellulose samples. The products were characterized by FT-IR and solid-state CP/MAS (13)C NMR spectroscopy, and thermal analysis. It was found that the crystallinity of the cellulose was completely disrupted in the ionic liquid system under the conditions given. The data also demonstrated that homogeneous modification of cellulose with succinic anhydride in AmimCl resulted in the production of cellulosic monoester. The thermal stability of the succinylated cellulose decreased upon chemical modification.
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Affiliation(s)
- C F Liu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
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40
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Guo H, Wang X, Xiao Y. [Spatial distribution pattern and fractal analysis of Larix chinensis populations in Qinling Mountain]. Ying Yong Sheng Tai Xue Bao 2005; 16:227-32. [PMID: 15852913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
In this paper, the fractal characters of Larix chinensis populations in Qinling Mountain were studied by contiguous grid quadrate sampling method and by boxing-counting dimension and information dimension. The results showed that the high boxing-counting dimension (1.8087) and information dimension (1.7931) reflected a higher spatial occupational degree of L. chinensis populations. Judged by the dispersal index and Morisita's pattern index, L. chinensis populations clumped at three different age stages (0-25, 25-50 and over 50 years). From Greig-Smiths' mean variance analysis, the figure of pattern scale showed that L. chinensis populations clumped in 128 m2 and 512 m2, and the different age groups clumped in different scales. The pattern intensities decreased with increasing age, and tended to reduce with increasing area when detected by Kershaw's PI index. The spatial pattern characters of L. chinensis populations may be their responses to environmental factors.
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Affiliation(s)
- Hua Guo
- College of Life Science, Shaanxi Normal University, Xi'an 710062, China.
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41
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Wang X, Wang Z, Xiao Y, Duan R, Zhao X. [Ecological plasticity of Larix chinensis population cones and seeds in Qinglin Mountain]. Ying Yong Sheng Tai Xue Bao 2005; 16:29-32. [PMID: 15852952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The study on 13 characters of cones and seeds of 6 Larix chinensis populations in Qinglin Mountain showed that there were significant differences in and among the populations. Except seed width and seed scale width, the other 11 characters were significantly different among populations. The variation coefficients of seed scale length, seed scale width, ratio of scale length to width, seed wing length, and seed wing width were larger among populations than in populations, while those of the other 8 characters were in adverse. Altitude had an obvious influence on the characters of cones and seeds, among which, seed width, scale width, scale length, seed wing length width, scale width, cone width, cone width, and the number of scales had a negative correlation with altitude, the ratio of scale length to width negatively correlated to slope, and scale width positively correlated to annual precipitation. The ratio of seed length to width and that of seed wing length to width showed a negative correlation to altitude.
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Affiliation(s)
- Xiaoan Wang
- College of Life Science, Shaanxi Normal University, Xi'an, China.
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42
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Zhao X, Wang X. [Fate of Larix chinensis apex buds and its influence on branching pattern]. Ying Yong Sheng Tai Xue Bao 2005; 16:25-8. [PMID: 15852951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Using box-counting dimension method, this paper investigated the spatial occupation ability of different branching patterns related to the fate of Larix chinensis apex buds. The results showed that type I branching was beneficial to the branches to extend their spatial occupation, type II branching was beneficial to spread their areas, and type III branching was beneficial both to extend their spatial occupation and to spread their areas. As a whole, the death of apex buds could help branches to improve their spatial occupation ability and energy utilization efficiency, and play an important role in adjusting crown type, and hence, in improving its photosynthesis. The death of Larix chinensis apex buds was probably a compelled result of their rigorous living conditions.
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Affiliation(s)
- Xiangjian Zhao
- College of Life Science, Shaanxi Normal University, Xi'an 710062, China.
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Wang XA, Wang SC, Lu CX. [Resection of spinal tumor and reconstruction of spinal stability]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 1999; 13:350-2. [PMID: 12080835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
OBJECTIVE Both primary and metastatic tumor of spine can influence spinal stability, spinal cord and nerves. The principles of dealing spinal tumor are resection of tumor decompression on spinal cord and reconstruction of spinal stability. METHODS Since Aug. 1993 to Oct. 1996, 15 cases with spinal tumor were treated, including 4 primary spinal tumor and 11 metastatic tumor. Tumor foci were mainly in thoracic and lumbar spine. Graded by Frankel classification of spinal injuries, there were 1 case of grade A, 1 of grade B, 3 of grade C, 5 of grade D and 5 of grade E. Tumors of upper lumbar spine and thoracic spine were resected through anterior approach. Posterior approach also was adopted once posterior column was affected. Tumors of lower lumbar spine were resected by two-staged operation: firstly, operation through posterior approach to reconstruct spinal stability: secondly, operation through anterior approach. After resection of tumor, the spines were fixed by Kaneda instrument, Steffee plate or Kirschner pins. To fuse the spine, bone grafting was used in benign tumor and bone cement used in malignant tumor. RESULTS Except one patient died from arrest of bone marrow, the others were followed up for 3 to 20 months. Postoperatively, 11 patients could sit up on one foot with the help of body supporter, and 9 patients could walk in two weeks under careful monitoring. There was no exacerbation of symptom and failure of fixation. The function of spinal cord was improved: 1 case from grade B to grade E, 1 from A to C, 2 from C to E and 4 from D to E. CONCLUSION The spine can be reconstructed for weight bearing early by internal fixation. The symptom can be relieved and the nervous function can be improved by resection of tumor and decompression.
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Affiliation(s)
- X A Wang
- Department of Orthopedic Surgery, People's Hospital of Hainan Province, Haikou, Hainan, P. R. China 570311
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Affiliation(s)
- R. Roger Raun
- Department of Biosystems and Agricultural Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108
- Department of Food Science and Nutrition, University of Minnesota, 1334 Eckles Ave., St. Paul, MN 55108
- Corresponding author. Phone: (612) 625-1710. Fax: (612) 624-3005. E-mail:
| | - Xiaoan Wang
- Department of Biosystems and Agricultural Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108
| | - Paul L. Chen
- Department of Biosystems and Agricultural Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108
| | - R. Gary Fulcher
- Department of Food Science and Nutrition, University of Minnesota, 1334 Eckles Ave., St. Paul, MN 55108
| | - Peter Pesheck
- Pillsbury Technology Center, 330 University Ave., Minneapolis, MN 55414
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Yang X, Li L, Wang XA. [Primary clinical experience of neuroendoscopy: report of 19 cases]. Zhonghua Wai Ke Za Zhi 1997; 35:234-6. [PMID: 10374546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
10 cases of basal ganglion and 6 of subcortical hematoma were evacuated. One case of temporal and 2 cases of para- and intra-ventricle arachnoid cyst were fenestrated towards the cistern or lateral ventricle. Burred holes were near the lesion, through which endoscope should run. We guided the endoscope to the target by stereotatic equipment in 10 cases of basal ganglion hematoma and 1 case of ventricle arachnoid cyst, and introduced endoscope by free-hand in other cases. Hematoma group: CT reexamination within 48 hours showed that the residual hematoma was less than 20%-30% in 9 of 11 cases. Cyst group: symptoms of all cases of arachnoid cysts were alleviated after intervention. CT after a month showed that fenestration entrance could be seen clearly in 2 cases. The cyst reduced 20%-30% in 1 case. There were no direct complications in the group. It was shown that operation by endoscope is minimal invasive and little complicated.
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Affiliation(s)
- X Yang
- Department of Neurosurgery, First Teaching Hospital of Beijing Medical University
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Abstract
Peripheral axotomy of the spinal nerve and avulsion of the ventral roots have been found to induce increase in expression of nitric oxide synthase (NOS) in the spinal motor neurones and the dorsal root ganglion. The present study investigated changes of NOS, using NADPH-diaphorase (NADPH-d) reactivity as the marker, in vagal complex after axotomy in the rat. Eight days after left cervical vagotomy the NADPH-d reactivity was found to be markedly enhanced in the dorsal motor nucleus of the vagus nerve, the ambiguus nucleus, the solitary tract and the nucleus of the tractus solitarius, and the nodose ganglion. This study offers the first evidence of changes in NOS expression in cranial visceral components following axotomy.
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Affiliation(s)
- Y S Jia
- Department of Neurobiology, Fourth Military Medical University, Xi'an, China
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Wang XA, Han QD, Yang LH, Chen MZ. [Antiinflammatory drugs inhibit the elevation of plasma CGRP concentration in endotoxin shock in rats]. Sheng Li Xue Bao 1991; 43:410-3. [PMID: 1754906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In the present study, we observed the effects of indomethacin, ibuprofen, naloxone and morphine on plasma CGRP concentration 3 h after endotoxin shock in conscious rats. The results showed that indomethacin, ibuprofen and naloxone significantly inhibited the elevation of plasma CGRP concentration as well as reduced the lesion in the intestine during endotoxin shock. However, morphine had no significant effect. The data are consistent with our hypothesis that prostaglandin, as one of the inflammatory mediators which increase in shock may be an important endogenous factor for triggering the CGRP release during endotoxin shock.
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Affiliation(s)
- X A Wang
- Cardiovascular Research Laboratory, Third Hospital, Beijing Medical University
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Joyce CD, Prinz RA, Thomas JX, Fiscus RR, Wang XA, Djuricin G, Jacobs HK. Calcitonin gene-related peptide increases coronary flow and decreases coronary resistance. J Surg Res 1990; 49:435-40. [PMID: 2246888 DOI: 10.1016/0022-4804(90)90192-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 12/31/2022]
Abstract
Calcitonin gene-related peptide (CGRP) is a potent vasodilator, but its effects on in situ ventricular function are unknown. We studied effects of intracoronary CGRP (100, 200, and 600 pmole/min, for 10 min) in 21 open-chest chloralose-anesthetized dogs. Systemic, pulmonary, left ventricular (LVP), central venous, and pulmonary capillary wedge pressures were continuously monitored. Left ventricular wall thickness (WT) and circumflex coronary blood flow were also measured. CGRP was infused into the proximal circumflex artery. During CGRP infusion there were no changes in heart rate, cardiac index, pulmonary artery pressure, or systemic vascular resistance, no percentage change in ventricular WT, and no changes in dWT/dt, peak dP/dt, or the slope of end-systolic points on WT/LVP loops. But there were significant changes in coronary flow (CQ), coronary resistance (CRES) and mean arterial blood pressure (MAP) from control (C)* (P less than 0.05). (table; see text) CGRP is a potent coronary artery vasodilator causing notable dose-dependent decreases in coronary resistance and a rise in myocardial flow, despite a decreased MAP (all P less than 0.05). CGRP does not affect ventricular contractility in vivo.
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Affiliation(s)
- C D Joyce
- Department of Surgery, Loyola University Medical Center, Maywood, Illinois 60153
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Wang XA. [ERG study of high degree myopia with retinal detachment]. Zhonghua Yan Ke Za Zhi 1990; 26:154-5. [PMID: 2397668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The authors studied the ERG of 51 cases of bilateral high degree myopia with unilateral retinal detachment and 50 cases of normal eyes. It was found that ERG in the former were characterized by a marked drop in the amplitude of the a-wave, particularly in the eye of retinal detachment, for which the ERG further diminished or failed to appear depending on the duration and extent of the lesion. Since a-waves originate from the sensory visual cells, the result was consistent with the pathology of high degree myopia and retinal detachment. The authors hold that periodic ERG examinations for dynamic surveillance is useful in monitoring the development of retinal detachment in high degree myopia.
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Affiliation(s)
- X A Wang
- Department of Ophthalmology, Fourth Municipal Hospital, Shanxi Province
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Abstract
The ability of freely-flying honeybees to track moving targets was examined by training them to collect a reward on a target, and then videotaping their approach to the target while it was in motion. Training experiments were carried out with several groups of bees, using various colors for the target and the background. Computer-aided frame-by-frame analysis of video recordings was used to plot the instantaneous positions of the target, as well as the position and orientation of the approaching bee in three dimensions. The results show that bees are perfectly capable of tracking moving targets and landing on them. When the distance of the target is greater than 15 cm, approaching bees correct for angular deviations of the target from the midline, both in the horizontal and in the vertical plane. In either plane, the input variables that are important to the tracking system seem to be (1) the angular bearing of the target with respect to the midline, and (2) the angular velocity of the target with respect to the eye. The tracking control system tends to orient the bee such that the target is located frontally, at an angle of ca. 35 deg below the bee's long axis. The chromatic properties of tracking behavior were investigated by employing combinations of colors for the target and background such that the boundary between the target and the background presented a contrast that was visible either only to the green-sensitive receptors of the bee's eye, or only to the blue-sensitive receptors.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- S W Zhang
- Institute of Biophysics, Academia Sinica, Beijing, China
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