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Huang QZ, Wang PC, Chen YX, Lin S, Ye K. Comparison of proximal gastrectomy with double-flap technique and double-tract reconstruction for proximal early gastric cancer: a meta-analysis. Updates Surg 2023; 75:2117-2126. [PMID: 37728858 PMCID: PMC10710383 DOI: 10.1007/s13304-023-01638-w] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 08/16/2023] [Indexed: 09/21/2023]
Abstract
Surgical resection is the main treatment for proximal gastric cancer, but there is no consensus on its reconstruction. We carried out a meta-analysis to evaluate the effects of double-tract reconstruction (DTR) and double-flap technique (DFT) on postoperative quality of life in patients with proximal gastric cancer. Systematic searches of PubMed, Web of Science, EBSCO, and the Cochrane Library were performed. Literature for the last 5 years was searched without language restrictions. The cutoff date for the search was 12 April 2023. Literature and research searches were conducted independently by two researchers and data were extracted. Statistical analyses were performed using Review Manager (Revman) 5.4 software. Fixed models were used when heterogeneity was small and random-effects models were used for meta-analysis when heterogeneity was large. The study was registered with PROSPERO, CRD 42023418520. Surgical time was significantly shorter in the DTR group than in the DFT group (P = 0.03). There were no significant differences between DFT and DTR in terms of age, gender, pathological stage, preoperative body mass index, surgical bleeding, and perioperative complications. There was no statistically significant difference between the two groups in terms of reflux esophagitis and PPI intake, but DFT was superior to DTR in weight improvement at 1 year after surgery (P < 0.0001). Compared with DTR, DFT reconstruction is more demanding and time-consuming, but its postoperative nutritional status is better, so it should be the first choice for GI reconstruction in most patients with early proximal gastric cancer. However, DTR should be the best choice for patients who have difficulty operating.
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Affiliation(s)
- Qiao-Zhen Huang
- Department of Surgery, The Second Affiliated Hospital, Fujian Medical University, No.34 North Zhongshan Road, Quanzhou, 362000, Fujian, China
| | - Peng-Cheng Wang
- Department of Surgery, The Second Affiliated Hospital, Fujian Medical University, No.34 North Zhongshan Road, Quanzhou, 362000, Fujian, China
| | - Yan-Xin Chen
- Department of Surgery, The Second Affiliated Hospital, Fujian Medical University, No.34 North Zhongshan Road, Quanzhou, 362000, Fujian, China
| | - Shu Lin
- Centre of Neurological and Metabolic Research, The Second Affiliated Hospital of Fujian Medical University, No.34 North Zhongshan Road, Quanzhou, 362000, Fujian, China.
- Group of Neuroendocrinology, Garvan Institute of Medical Research, 384 Victoria St, Sydney, Australia.
| | - Kai Ye
- Department of Surgery, The Second Affiliated Hospital, Fujian Medical University, No.34 North Zhongshan Road, Quanzhou, 362000, Fujian, China.
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Chen YX, Huang QZ, Wang PC, Zhu YJ, Chen LQ, Wu CY, Wang JT, Chen JX, Ye K. Short- and long-term outcomes of Roux-en-Y and Billroth II with Braun reconstruction in total laparoscopic distal gastrectomy: a retrospective analysis. World J Surg Oncol 2023; 21:361. [PMID: 37990273 PMCID: PMC10664253 DOI: 10.1186/s12957-023-03249-6] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 11/13/2023] [Indexed: 11/23/2023] Open
Abstract
BACKGROUND The controversy surrounding Roux-en-Y (R-Y) and Billroth II with Braun (BII + B) reconstruction as an anti-bile reflux procedure after distal gastrectomy has persisted. Recent studies have demonstrated their efficacy, but the long-term outcomes and postoperative quality of life (QoL) among patients have yet to be evaluated. Therefore, we compared the short-term and long-term outcomes of the two procedures as well as QoL. METHODS The clinical data of 151 patients who underwent total laparoscopic distal gastrectomy (TLDG) at the Gastrointestinal Surgery Department of the Second Hospital of Fujian Medical University from January 2016 to December 2019 were retrospectively analyzed. Of these, 57 cases with Roux-en-Y procedure (R-Y group) and 94 cases with Billroth II with Braun procedure were included (BII + B group). Operative and postoperative conditions, early and late complications, endoscopic outcomes at year 1 and year 3 after surgery, nutritional indicators, and quality of life scores at year 3 postoperatively were compared between the two groups. RESULTS The R-Y group recorded a significantly longer operative time (194.65 ± 21.52 vs. 183.88 ± 18.02 min) and anastomotic time (36.96 ± 2.43 vs. 27.97 ± 3.74 min) compared to the BII + B group (p < 0.05). However, no other significant differences were observed in terms of perioperative variables, including blood loss (p > 0.05). Both groups showed comparable rates of early and late complications. Endoscopic findings indicated similar food residuals at years 1 and 3 post-surgery for both groups. The R-Y group had a lower occurrence of residual gastritis and bile reflux at year 1 and year 3 after surgery, with a statistically significant difference (p < 0.001). Reflux esophagitis was not significantly different between the R-Y and BII + B groups in year 1 after surgery (p = 0.820), but the R-Y group had a lower incidence than the BII + B group in year 3 after surgery (p = 0.023). Nutritional outcomes at 3 years after surgery did not differ significantly between the two groups (p > 0.05). Quality of life scores measured by the QLQ-C30 scale were not significantly different between the two groups. However, on the QLQ-STO22 scale, the reflux score was significantly lower in the R-Y group than in the BII + B group (0 [0, 0] vs. 5.56 [0, 11.11]) (p = 0.003). The rest of the scores were not significantly different (p > 0.05). CONCLUSION Both R-Y and B II + B reconstructions are equally safe and efficient for TLDG. Nevertheless, the R-Y reconstruction reduces the incidence of residual gastritis, bile reflux, and reflux esophagitis, as well as postoperative reflux symptoms, and provides a better quality of life for patients. R-Y reconstruction is superior to BII + B reconstruction for TLDG.
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Affiliation(s)
- Yan-Xin Chen
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Fengze District, Quanzhou, 362000, Fujian, China
| | - Qiao-Zhen Huang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Fengze District, Quanzhou, 362000, Fujian, China
| | - Peng-Cheng Wang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Fengze District, Quanzhou, 362000, Fujian, China
| | - Yue-Jia Zhu
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Fengze District, Quanzhou, 362000, Fujian, China
| | - Li-Quan Chen
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Fengze District, Quanzhou, 362000, Fujian, China
| | - Chu-Ying Wu
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Fengze District, Quanzhou, 362000, Fujian, China
| | - Jin-Tian Wang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Fengze District, Quanzhou, 362000, Fujian, China
| | - Jun-Xing Chen
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Fengze District, Quanzhou, 362000, Fujian, China
| | - Kai Ye
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Fengze District, Quanzhou, 362000, Fujian, China.
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Wu CY, Lin JA, Huang QZ, Xu JH, Zhong WJ, Kang WG, Wang JT, Chen JX, Zheng HD, Ye K. Comparison of short-term and long-term clinical effects of modified overlap anastomosis and conventional incision-assisted anastomosis in laparoscopic total gastrectomy. BMC Surg 2023; 23:306. [PMID: 37817168 PMCID: PMC10566090 DOI: 10.1186/s12893-023-02212-2] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 10/01/2023] [Indexed: 10/12/2023] Open
Abstract
BACKGROUND To compare short-term and long-term clinical effects of modified overlap anastomosis and conventional incision-assisted anastomosis for laparoscopic total gastrectomy. METHODS This retrospective cohort study included patients with gastric cancer admitted to the Second Affiliated Hospital of Fujian Medical University from January 2016 to March 2020. Quality of life, intraoperative and postoperative conditions were analyzed. RESULTS Compared with the conventional assisted group, the modified overlap group showed a shorter auxiliary incision, milder postoperative pain, shorter time to the first postoperative anal exhaust, shorter time to the first postoperative liquid food intake, and shorter postoperative stay. There were no differences between the two groups regarding operation time, esophagus-jejunum anastomosis time, intraoperative blood loss, number of lymph nodes dissected, and length of the upper incision margin. There were no differences between the two groups regarding postoperative early and late complications. There were no differences between the two groups regarding the QLQ-C30 scale three years after the operation. The scores of the QLQ-STO22 scale 3 years after the operation showed significantly lower scores for dysphagia and feeding limit in the modified overlap group than those in the conventional assisted anastomosis group. There was no recurrence in the modified overlap group but one patient in the conventional assisted group. CONCLUSIONS Patients undergoing totally laparoscopic total gastrectomy with modified overlap anastomosis have better minimal invasiveness and faster post-operative recovery than conventional incision-assisted anastomosis.
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Affiliation(s)
- Chu-Ying Wu
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Jian-An Lin
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Qiao-Zhen Huang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Jian-Hua Xu
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Wen-Jin Zhong
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Wen-Gui Kang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Jin-Tian Wang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Jun-Xing Chen
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Hui-Da Zheng
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Kai Ye
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China.
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Wei QT, Liu BY, Ji HY, Lan YF, Tang WH, Zhou J, Zhong XY, Lian CL, Huang QZ, Wang CY, Xu YM, Guo HB. Exosome-mediated transfer of MIF confers temozolomide resistance by regulating TIMP3/PI3K/AKT axis in gliomas. Mol Ther Oncolytics 2021; 22:114-128. [PMID: 34514093 PMCID: PMC8413833 DOI: 10.1016/j.omto.2021.08.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 08/12/2021] [Indexed: 01/08/2023]
Abstract
Temozolomide (TMZ) resistance is an important cause of clinical treatment failure and poor prognosis in gliomas. Increasing evidence indicates that cancer-derived exosomes contribute to chemoresistance; however, the specific contribution of glioma-derived exosomes remains unclear. The aim of this study was to explore the role and underlying mechanisms of exosomal macrophage migration inhibitory factor (MIF) on TMZ resistance in gliomas. We first demonstrated that MIF was upregulated in the exosomes of TMZ-resistant cells, engendering the transfer of TMZ resistance to sensitive cells. Our results indicated that exosomal MIF conferred TMZ resistance to sensitive cells through the enhancement of cell proliferation and the repression of cell apoptosis upon TMZ exposure. MIF knockdown enhanced TMZ sensitivity in resistant glioma cells by upregulating Metalloproteinase Inhibitor 3 (TIMP3) and subsequently suppressing the PI3K/AKT signaling pathway. Additionally, exosomal MIF promoted tumor growth and TMZ resistance of glioma cells in vivo, while IOS-1 (MIF inhibitor) promotes glioma TMZ sensitive in vivo. Taken together, our study demonstrated that exosome-mediated transfer of MIF enhanced TMZ resistance in glioma through downregulating TIMP3 and further activating the PI3K/AKT signaling pathway, highlighting a prognostic biomarker and promising therapeutic target for TMZ treatment in gliomas.
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Affiliation(s)
- Q T Wei
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China.,Department of Neurosurgery, The First Affiliated Hospital of Shantou University, Shantou 515041, Guangdong, China
| | - B Y Liu
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - H Y Ji
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China.,Department of Neurosurgery, The First Affiliated Hospital of Shantou University, Shantou 515041, Guangdong, China
| | - Y F Lan
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - W H Tang
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - J Zhou
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - X Y Zhong
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - C L Lian
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - Q Z Huang
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - C Y Wang
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
| | - Y M Xu
- Department of Neurosurgery, The First Affiliated Hospital of Shantou University, Shantou 515041, Guangdong, China
| | - H B Guo
- Department of Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong 510280, China
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Yang KX, Zhou H, Ding JM, He C, Niu Q, Gu CJ, Zhou ZX, Meng H, Huang QZ. Copy number variation in HOXB7 and HOXB8 involves in the formation of beard trait in chickens. Anim Genet 2020; 51:958-963. [PMID: 33058257 DOI: 10.1111/age.13011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 06/03/2020] [Revised: 08/24/2020] [Accepted: 09/19/2020] [Indexed: 12/24/2022]
Abstract
The derived feathering phenotype beard in domestic birds is an ideal resource to investigate the genetic mechanisms controlling feather development and differentiation. In the present study, we performed a GWAS and QTL linkage analysis on the trait of beard in Beijing fatty chicken. One major QTL (1.2-1.9 Mb) was identified that could explain 34% of the phenotypic variation. The copy number variation that was copied from the region (GGA27:3 578 409-3 592 890 bp) containing homebox B7 (HOXB7) and homebox B8 (HOXB8) was validated to be only exhibited in the genome of bearded chickens. Protein-protein interaction analysis indicated that HOXB7 and HOXB8 proteins could highly interact with the HOXB family members, including HOXB4, HOXB5 and HOXB6, whose genomic locations near HOXB7 and HOXB8 suggested that they may regulate their family members to involve in the formation of the beard trait in chickens. Overall, our work provides basic data for understanding the mechanisms regulating beard development and differentiation.
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Affiliation(s)
- K X Yang
- Animal Husbandry and Veterinary Research Institute, Shanghai Academy of Agricultural Science, 2901 Beidi Road, Shanghai, 201106, China
| | - H Zhou
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - J M Ding
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - C He
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Q Niu
- Animal Husbandry and Veterinary Research Institute, Shanghai Academy of Agricultural Science, 2901 Beidi Road, Shanghai, 201106, China
| | - C J Gu
- Animal Husbandry and Veterinary Research Institute, Shanghai Academy of Agricultural Science, 2901 Beidi Road, Shanghai, 201106, China
| | - Z X Zhou
- Animal Husbandry and Veterinary Research Institute, Shanghai Academy of Agricultural Science, 2901 Beidi Road, Shanghai, 201106, China
| | - H Meng
- Shanghai Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Q Z Huang
- Animal Husbandry and Veterinary Research Institute, Shanghai Academy of Agricultural Science, 2901 Beidi Road, Shanghai, 201106, China
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Dai Y, Li ZP, Xu H, Zhu L, Zhu YQ, Cheng H, Chen ZB, Huang QZ, Lei L, Li RQ, Li G, Li Y, Liao M, Lu QH, Shi XP, Sun HJ, Shi TL, Wu XX, Wang ZS, Xu J, Zhao G, Zhang GY, Chen C. [A multicenter survey of the accessibility of essential medicines for children in China]. Zhonghua Er Ke Za Zhi 2020; 58:301-307. [PMID: 32234137 DOI: 10.3760/cma.j.cn112140-20190820-00527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the availability, prices and affordability of essential medicines in pediatric population across China, in the hope of improving rational use of medicines. Methods: A multicenter cross-sectional survey of medicine prices, availability and affordability was conducted in 17 provinces, municipalities and autonomous region across east, south-central part, west and north of China. Data on 42 medicines used in pediatric population, both original and generic, were collected in 55 public hospitals from May 26 to June 2, 2017. Availability was expressed as the percentage of hospitals with stock of the target medicine on the day of data collection,and median price ratio (MPR) was the ratio of price upon investigation to international reference. Based on national minimum daily wage, affordability represents the number of working days needed to earn the expense which covers a standard course using the target medicine. Statistical software SPSS 13.0 was applied for descriptive analysis of availability, MPR and affordability. Results: Mean Availability of original and generic medicine was 33% and 32%, with median MPR being 5.43 and 1.55. Among the 19 medicines with price information for both original and generic product, the median MPR was 7.73 and 2.04 respectively. Regarding the five medicines used to treat four common pediatric diseases (pneumonia,peptic ulcer, congenital hypothyroidism, refractory nephrotic syndrome), the affordability was 0.63 (0.16-6.17) d for generic medicine, and 1.03 (0.16-11.53) d for its original counterpart. Conclusions: The availability to both original and generic products of the 42 medicines used in pediatric population was low in China. The prices of generic medicines seem to be lower and affordability higher than those of original medicines. There is an urgent need to improve the availability and affordability of pediatric medicines.
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Affiliation(s)
- Y Dai
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Z P Li
- Department of Pharmacy, Children's Hospital of Fudan University,Shanghai 201102, China
| | - H Xu
- Department of Nephrology, Children's Hospital of Fudan University,Shanghai 201102, China
| | - L Zhu
- Department of Pharmacy, Children's Hospital of Fudan University,Shanghai 201102, China
| | - Y Q Zhu
- Department of Pharmacy, Children's Hospital of Fudan University,Shanghai 201102, China
| | - H Cheng
- Department of Pharmacy, Xi'an Children's Hospital, Xi'an 710003, China
| | - Z B Chen
- Department of Pharmacy, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - Q Z Huang
- Department of Pharmacy, Fuzhou Children's Hospital, Fuzhou 350005, China
| | - L Lei
- Department of Pharmacy, Children's Hospital of Urumqi, Urumqi 830000, China
| | - R Q Li
- Department of Pharmacy, Kunming Children's Hospital, Kunming 650228, China
| | - G Li
- Department of Pharmacy, Chengdu Women's and Children's Central Hospital, Chengdu 610091, China
| | - Y Li
- Department of Pharmacy, Qingdao Women and Children's Hospital, Qingdao 266000, China
| | - M Liao
- Department of Pharmacy, Guiyang Maternal and Child Health Hospital, Guiyang 550003, China
| | - Q H Lu
- Department of Pharmacy, Jiangxi Provincial Children's Hospital, Nanchang 330006, China
| | - X P Shi
- Department of Pharmacy, Dalian Children's Hospital,Dalian 116012,China
| | - H J Sun
- Department of Pharmacy, Children's Hospital of Shanghai, Shanghai 200062, China
| | - T L Shi
- Department of Pharmacy, the First Affiliated Hospital of University of Science and Technology of China, Anhui Provincial Hospital, Hefei 230001,China
| | - X X Wu
- Department of Pharmacy, Qilu Children's Hospital of Shandong University, Jinan 250022,China
| | - Z S Wang
- Department of Pharmacy, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - J Xu
- Department of Pharmacy, Children's Hospital of Nanjing Medical University, Nanjing 210019, China
| | - G Zhao
- Department of Pharmacy, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning 530003, China
| | - G Y Zhang
- Department of Pharmacy, Hebei Children's Hospital, Shijiazhuang 050031, China
| | - C Chen
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai 201102, China
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7
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Li WM, Zhao JF, Cao LP, Hu Z, Huang QZ, Wang XC, Liu Y, Zhao GQ, Zhang J, Liu QQ, Yu RZ, Long YW, Wu H, Lin HJ, Chen CT, Li Z, Gong ZZ, Guguchia Z, Kim JS, Stewart GR, Uemura YJ, Uchida S, Jin CQ. Superconductivity in a unique type of copper oxide. Proc Natl Acad Sci U S A 2019; 116:12156-12160. [PMID: 31109998 PMCID: PMC6589659 DOI: 10.1073/pnas.1900908116] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [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] [Indexed: 11/18/2022] Open
Abstract
The mechanism of superconductivity in cuprates remains one of the big challenges of condensed matter physics. High-T c cuprates crystallize into a layered perovskite structure featuring copper oxygen octahedral coordination. Due to the Jahn Teller effect in combination with the strong static Coulomb interaction, the octahedra in high-T c cuprates are elongated along the c axis, leading to a 3dx 2-y 2 orbital at the top of the band structure wherein the doped holes reside. This scenario gives rise to 2D characteristics in high-T c cuprates that favor d-wave pairing symmetry. Here, we report superconductivity in a cuprate Ba2CuO4-y , wherein the local octahedron is in a very exceptional compressed version. The Ba2CuO4-y compound was synthesized at high pressure at high temperatures and shows bulk superconductivity with critical temperature (T c ) above 70 K at ambient conditions. This superconducting transition temperature is more than 30 K higher than the T c for the isostructural counterparts based on classical La2CuO4 X-ray absorption measurements indicate the heavily doped nature of the Ba2CuO4-y superconductor. In compressed octahedron, the 3d3z 2-r 2 orbital will be lifted above the 3dx 2-y 2 orbital, leading to significant 3D nature in addition to the conventional 3dx 2-y 2 orbital. This work sheds important light on advancing our comprehensive understanding of the superconducting mechanism of high T c in cuprate materials.
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Affiliation(s)
- W M Li
- Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
- School of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190 Beijing, China
- Materials Research Lab at Songshan Lake, 523808 Dongguan, China
| | - J F Zhao
- Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
- School of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190 Beijing, China
| | - L P Cao
- Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
- School of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190 Beijing, China
| | - Z Hu
- Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Straβe 40, 01187 Dresden, Germany
| | - Q Z Huang
- NIST Center for Neutron Research, Gaithersburg, MD 20899
| | - X C Wang
- Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
- School of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190 Beijing, China
- Materials Research Lab at Songshan Lake, 523808 Dongguan, China
| | - Y Liu
- Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
- School of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190 Beijing, China
| | - G Q Zhao
- Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
- School of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190 Beijing, China
| | - J Zhang
- Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
- School of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190 Beijing, China
| | - Q Q Liu
- Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
- School of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190 Beijing, China
| | - R Z Yu
- Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
- School of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190 Beijing, China
- Materials Research Lab at Songshan Lake, 523808 Dongguan, China
| | - Y W Long
- Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
- School of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190 Beijing, China
- Materials Research Lab at Songshan Lake, 523808 Dongguan, China
| | - H Wu
- NIST Center for Neutron Research, Gaithersburg, MD 20899
| | - H J Lin
- National Synchrotron Radiation Research Center, 30076 Hsinchu, Taiwan
| | - C T Chen
- National Synchrotron Radiation Research Center, 30076 Hsinchu, Taiwan
| | - Z Li
- School of Materials Science and Engineering, Nanjing University of Science and Technology, 210094 Nanjing, China
| | - Z Z Gong
- Department of Physics, Columbia University, New York, NY 10027
| | - Z Guguchia
- Department of Physics, Columbia University, New York, NY 10027
| | - J S Kim
- Department of Physics, University of Florida, Gainesville, FL 32611
| | - G R Stewart
- Department of Physics, University of Florida, Gainesville, FL 32611
| | - Y J Uemura
- Department of Physics, Columbia University, New York, NY 10027
| | - S Uchida
- Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
- Department of Physics, University of Tokyo, 113-0033 Tokyo, Japan
| | - C Q Jin
- Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China;
- School of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100190 Beijing, China
- Materials Research Lab at Songshan Lake, 523808 Dongguan, China
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8
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Lu XF, Wang NZ, Wu H, Wu YP, Zhao D, Zeng XZ, Luo XG, Wu T, Bao W, Zhang GH, Huang FQ, Huang QZ, Chen XH. Coexistence of superconductivity and antiferromagnetism in (Li0.8Fe0.2)OHFeSe. Nat Mater 2015; 14:325-329. [PMID: 25502096 DOI: 10.1038/nmat4155] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 10/30/2014] [Indexed: 06/04/2023]
Abstract
Iron selenide superconductors exhibit a number of unique characteristics that are helpful for understanding the mechanism of superconductivity in high-Tc iron-based superconductors more generally. However, in the case of AxFe2Se2 (A = K, Rb, Cs), the presence of an intergrown antiferromagnetic insulating phase makes the study of the underlying physics problematic. Moreover, FeSe-based systems intercalated with alkali metal ions, NH3 molecules or organic molecules are extremely sensitive to air, which prevents the further investigation of their physical properties. It is therefore desirable to find a stable and easily accessible FeSe-based superconductor to study its physical properties in detail. Here, we report the synthesis of an air-stable material, (Li0.8Fe0.2)OHFeSe, which remains superconducting at temperatures up to ~40 K, by means of a novel hydrothermal method. The crystal structure is unambiguously determined by a combination of X-ray and neutron powder diffraction and nuclear magnetic resonance. Moreover, antiferromagnetic order is shown to coexist with superconductivity. This synthetic route opens a path for exploring superconductivity in other related systems, and confirms the appeal of iron selenides as a platform for understanding superconductivity in iron pnictides more broadly.
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Affiliation(s)
- X F Lu
- 1] Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China [2] Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China
| | - N Z Wang
- 1] Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China [2] Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China
| | - H Wu
- 1] National Institute of Standards and Technology, Center for Neutron Research, 100 Bureau Dr., Gaithersburg Maryland 20878, USA [2] Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, USA
| | - Y P Wu
- 1] Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China [2] Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China
| | - D Zhao
- 1] Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China [2] Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China
| | - X Z Zeng
- 1] Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China [2] Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China
| | - X G Luo
- 1] Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China [2] Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China [3] Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - T Wu
- 1] Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China [2] Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China [3] Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - W Bao
- Department of Physics, Renmin University of China, Beijing 100872, China
| | - G H Zhang
- 1] CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China [2] Beijing National Laboratory for Molecular Sciences and State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - F Q Huang
- 1] CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China [2] Beijing National Laboratory for Molecular Sciences and State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Q Z Huang
- National Institute of Standards and Technology, Center for Neutron Research, 100 Bureau Dr., Gaithersburg Maryland 20878, USA
| | - X H Chen
- 1] Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China [2] Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026, China [3] Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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9
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van Duijn J, Kim KH, Hur N, Adroja D, Adams MA, Huang QZ, Jaime M, Cheong SW, Broholm C, Perring TG. Inhomogeneous level splitting in Pr 2-x BixRu2O7. Phys Rev Lett 2005; 94:177201. [PMID: 15904330 DOI: 10.1103/physrevlett.94.177201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2004] [Indexed: 05/02/2023]
Abstract
We report that Bi doping drives Pr 2-x BixRu2O7 from an antiferromagnetic insulator (x = 0) to a metallic paramagnet (x approximately 1) with a broad low T maximum in C/T. Neutron scattering reveals local low energy spin excitations (variant Planck's omega approximately 1 meV) with a spectrum that is unaffected by heating to k(B)T >> variant Planck's omega. We show that a continuous distribution of splittings of the non-Kramers Pr3+ ground-state doublet such as might result from various types of lattice strain can account for all the data.
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Affiliation(s)
- J van Duijn
- Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA
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10
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Lawes G, Kenzelmann M, Rogado N, Kim KH, Jorge GA, Cava RJ, Aharony A, Entin-Wohlman O, Harris AB, Yildirim T, Huang QZ, Park S, Broholm C, Ramirez AP. Competing magnetic phases on a kagomé staircase. Phys Rev Lett 2004; 93:247201. [PMID: 15697855 DOI: 10.1103/physrevlett.93.247201] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2004] [Indexed: 05/24/2023]
Abstract
We present thermodynamic and neutron data on Ni3V2O8, a spin-1 system on a kagomé staircase. The extreme degeneracy of the kagomé antiferromagnet is lifted to produce two incommensurate phases at finite T--one amplitude modulated, the other helical--plus a commensurate canted antiferromagnet for T-->0. The H-T phase diagram is described by a model of competing first and second neighbor interactions with smaller anisotropic terms. Ni3V2O8 thus provides an elegant example of order from subleading interactions in a highly frustrated system.
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Affiliation(s)
- G Lawes
- Los Alamos National Laboratory, Los Alamos, NM 87544, USA
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11
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Noakes DR, Arrott AS, Belk MG, Deevi SC, Huang QZ, Lynn JW, Shull RD, Wu D. Incommensurate spin density waves in iron aluminides. Phys Rev Lett 2003; 91:217201. [PMID: 14683331 DOI: 10.1103/physrevlett.91.217201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2003] [Indexed: 05/24/2023]
Abstract
Neutron diffraction in Fe(Al) reveals incommensurate spin density waves (SDWs) in alloys known to be spin glasses. The wave vectors for crystals of Fe(34Al), Fe(40Al), and Fe(43Al) show n varying from 11 to 6 for q-->=2pi(h+/-1/n,k+/-1/n,l+/-1/n)/a(0), where (h,k,l) and a(0) characterize the parent bcc lattice of the CsCl structure. The magnetic reflections are present far above the spin-glass freezing temperatures. These SDWs keep the spins on nearest-neighbor Fe atoms close to parallel, in contrast with SDWs in Cr, which keep nearest-neighbor spins close to antiparallel.
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Affiliation(s)
- D R Noakes
- Center for Interactive Micromagnetics, Virginia State University, Petersburg, Virginia 23806, USA
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12
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Shao F, Hu Z, Xiong YM, Huang QZ, Zhu RH, Wang DC. A new antifungal peptide from the seeds of Phytolacca americana: characterization, amino acid sequence and cDNA cloning. Biochim Biophys Acta 1999; 1430:262-8. [PMID: 10082954 DOI: 10.1016/s0167-4838(99)00013-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An antifungal peptide from seeds of Phytolacca americana, designated PAFP-s, has been isolated. The peptide is highly basic and consists of 38 residues with three disulfide bridges. Its molecular mass of 3929.0 was determined by mass spectrometry. The complete amino acid sequence was obtained from automated Edman degradation, and cDNA cloning was successfully performed by 3'-RACE. The deduced amino acid sequence of a partial cDNA corresponded to the amino acid sequence from chemical sequencing. PAFP-s exhibited a broad spectrum of antifungal activity, and its activities differed among various fungi. PAFP-s displayed no inhibitory activity towards Escherichia coli. PAFP-s shows significant sequence similarities and the same cysteine motif with Mj-AMPs, antimicrobial peptides from seeds of Mirabilis jalapa belonging to the knottin-type antimicrobial peptide.
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Affiliation(s)
- F Shao
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
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13
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Huang QZ, Hong GX, Lo SX. [Pharmacology of Corchorus Linn. I. Alcoholic extract and glycoside of the seeds of Corchorus acutangulus]. Yao Xue Xue Bao 1980; 15:193-7. [PMID: 7457137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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