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Li XP, Shen WH, Zhou LL, Huang QY, Cong RP, Zheng LP, Wang JW. Lipopolysaccharides from a Shiraia fruiting body-associated bacterium elicit host fungal hypocrellin A biosynthesis through nitric oxide generation. Carbohydr Polym 2024; 324:121498. [PMID: 37985049 DOI: 10.1016/j.carbpol.2023.121498] [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: 08/09/2023] [Revised: 09/30/2023] [Accepted: 10/13/2023] [Indexed: 11/22/2023]
Abstract
Hypocrellin A (HA) is an excellent perylenequinone photosensitizer from Shiraia fruiting bodies. A dominant bacterium Pseudomonas fulva SB1 in the fruiting body was found to promote HA biosynthesis. The bacterial LPS were purified and the O-specific polysaccharide (OPS) consisted of rhamnose (Rha), galactose (Gal) and N-acetyl-galactosamine (GalNAc) with an average molecular weight of 282.8 kDa. Although the OPS composing of Rhap and Galp backbone showed elicitation capability on fungal HA accumulation, the highest HA production (303.76 mg/L) was achieved by LPS treatment at 20 μg/mL on day 3 of the mycelium culture. The generation of nitric oxide (NO) in Shiraia mycelia was triggered by LPS, which was partially blocked by inhibitors of nitric oxide synthase (NOS) and nitrate reductase (NR), leading to the depressed HA production. Transcriptome analysis revealed that NO mediated LPS-induced HA production via upregulating the expressions of critical genes associated with central carbon metabolism and downstream HA biosynthesis genes. This is the first report of LPS-induced NO to regulate fungal secondary metabolite production, which provides new insights on the role of bacterial LPS in bacterium-fungus interactions and an effective strategy to enhance hypocrellin production.
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Affiliation(s)
- Xin Ping Li
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Wen Hao Shen
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Lu Lu Zhou
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Qun Yan Huang
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Rui Peng Cong
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Li Ping Zheng
- Department of Horticultural Sciences, Soochow University, Suzhou 215123, China.
| | - Jian Wen Wang
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China.
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Zhou LL, Ye SG, Li P, Tang XC, Liang AB. [Effect of early tocilizumab intervention on patients with cytokine release syndrome following chimeric antigen receptor T cell therapy]. Zhonghua Xue Ye Xue Za Zhi 2023; 44:1022-1026. [PMID: 38503526 PMCID: PMC10834881 DOI: 10.3760/cma.j.issn.0253-2727.2023.12.009] [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] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Indexed: 03/21/2024]
Abstract
Objective: This study aimed to evaluate the effect of early tocilizumab intervention to relieve cytokine release syndrome (CRS) following chimeric antigen receptor T cell (CAR-T) therapy. Methods: Twenty-two patients with acute lymphoblastic leukemia who received tocilizumab to relieve CRS response after CAR-T cell infusion in our research center from October 2015 to July 2021 were retrospectively analyzed. According to the timing of tocilizumab intervention, patients were divided into the conventional and early intervention groups. Patients who received tocilizumab treatment after sustained high fever for 4 h were included in the early intervention group. The clinical data, CRS grade, and event-free survival (EFS) between the two groups were evaluated. Results: Compared with patients who used tocilizumab after severe CRS, no patients in the early intervention group died from CRS, and there was no increased risk of neurotoxicity. Eleven patients (84.62%) achieved complete remission with minimal residual lesions. The median EFS of patients in the early intervention and conventional groups was 2 (95% CI 0-5) and 7 (95% CI 3-11) months, respectively. Conclusion: Early tocilizumab intervention in patients with CRS reduces severe CRS and provides a more optimized therapeutic strategy for CRS caused by CAR-T cell therapy.
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Affiliation(s)
- L L Zhou
- Department of Hematology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - S G Ye
- Department of Hematology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - P Li
- Department of Hematology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - X C Tang
- Department of Hematology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - A B Liang
- Department of Hematology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
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Lu Y, Zhou LL. Can digital economy improve employment structure?-Mediating effect based on a spatial Durbin model. PLoS One 2023; 18:e0287849. [PMID: 37917667 PMCID: PMC10621991 DOI: 10.1371/journal.pone.0287849] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 06/13/2023] [Indexed: 11/04/2023] Open
Abstract
Based on the panel data of 283 prefecture-level cities in China from 2011 to 2019, this study constructed an index measurement system of digital economy, economic agglomeration, innovation and entrepreneurship, and employment structure. The index of digital economy was developed by entropy weight method, and the double-fixed spatial Durbin model was constructed based on the intermediary effect from the spatial perspective to determine the direct effect, indirect effect, and total effect of the digital economy, economic agglomeration degree, and innovation and entrepreneurship on employment structure. The results indicated a significant spatial correlation between the three aspects, i.e., digital economy can significantly optimize the employment structure, with an evident spillover effect. The mechanism analysis revealed that the level of innovation and entrepreneurship poses a stronger intermediary effect than the degree of economic agglomeration, and the digital economy in the eastern region directly impacts the urban employment structure; however, the influence of digital economy on the employment structure is significantly higher in small- and medium-sized cities than in large-sized cities.
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Affiliation(s)
- Yang Lu
- School of Economics, Jiangxi University of Finance and Economics, Nanchang, Jiangxi, China
| | - Lu Lu Zhou
- School of Economics, Jiangxi University of Finance and Economics, Nanchang, Jiangxi, China
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Su YW, Li YH, Wang JY, Zhang Y, Zhou LL, Wang Z. [Effects of electric welding on hearing loss and respiratory damage]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:832-837. [PMID: 37935549 DOI: 10.3760/cma.j.cn121094-20221009-00477] [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] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Objective: To investigate the occupational health status of electric welding workers and explore the effects of electric welding on hearing loss and respiratory damage. Methods: From August to December 2021, the cluster sampling method was used to select workers from an automobile manufacturer in Guangzhou City as research subjects: 636 welding workers in the welding workshop as the welding group, 757 assembly workers in the engine workshop and the final assembly workshop exposed to pure noise as the assembly group. Occupational disease hazard factors were detected for welding positions and assembly positions, and occupational health examination was carried out for research subjects. The occupational health status, the trends of hearing loss and respiratory abnormalities with working age were compared and analyzed between the two groups. Binary logistic regression was used to analyze the association between hearing loss and respiratory abnormalities in welding workers. Results: The excess rates of welding fumes, manganese and its compounds in the welding position were both 9.68% (3/31). Its noise exposure intensity [ (85.36±2.68) dB (A) ] and excess rate [48.39% (15/31) ] were not significantly different from those in the assembly position [ (84.86±3.28) dB (A) and 43.24% (16/37) ] (P>0.05). The results of the occupational health examination showed that the detection rates of hearing loss, digital radiography (DR) chest X-ray abnormality, alanine aminotransferase abnormality, deazelaic aminotransferase abnormality and white blood cell count abnormality of workers in the welding group were higher than those in the assembly group (P<0.05). The detection rates of hearing loss, DR chest X-ray abnormality, pulmonary ventilation abnormality in the welding group and the detection rate of hearing loss in the assembly group increased with the working age of the workers (P<0.05). The hearing loss detection rate and DR chest X-ray abnormality detection rate of the workers with ≥9 years working age in the welding group were both higher than those in the assembly group workers with same working age (P<0.05). The binary logistic regression analysis showed that abnormal pulmonary ventilation and abnormal DR chest X-ray were the risk factors for hearing loss in welding workers (OR=10.83, 95%CI: 7.31-16.06; OR=16.59, 95%CI: 5.72-48.10; P<0.05) . Conclusion: Hearing loss and respiratory damage are prominent problems among welding workers, and the detection rates of abnormality increase with the working age of the workers. Hearing loss in welding workers is associated with abnormal pulmonary ventilation and abnormal DR chest X-ray.
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Affiliation(s)
- Y W Su
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - Y H Li
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - J Y Wang
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - Y Zhang
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - L L Zhou
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - Z Wang
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
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Lu Y, Liu H, Ye SG, Zhou LL, Luo X, Dang XY, Yuan XG, Qian WB, Liang AB, Li P. [Efficacy and safety analysis of the zanubrutinib-based bridging regimen in chimeric antigen receptor T-cell therapy for relapsed/refractory diffuse large B-cell lymphoma]. Zhonghua Xue Ye Xue Za Zhi 2023; 44:813-819. [PMID: 38049332 PMCID: PMC10694070 DOI: 10.3760/cma.j.issn.0253-2727.2023.10.004] [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] [Grants] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Indexed: 12/06/2023]
Abstract
Objective: To further elucidate the clinical efficacy and safety of a combination regimen based on the BTK inhibitor zebutanil bridging CD19 Chimeric antigen receptor T cells (CAR-T cells) in the treatment of relapsed/refractory diffuse large B-cell lymphoma (r/r DLBCL) . Methods: Twenty-one patients with high-risk r/r DLBCL were treated with a zanubrutinib-based regimen bridging CAR-T between June 2020 and June 2023 at the Department of Hematology, Tongji Hospital, Tongji University and the Second Affiliated Hospital of Zhejiang University, and the efficacy and safety were retrospectively analyzed. Results: All 21 patients were enrolled, and the median age was 57 years (range: 38-76). Fourteen patients (66.7%) had an eastern cooperative oncology group performance status score (ECOG score) of ≥2. Eighteen patients (85.7%) had an international prognostic index (IPI) score of ≥3. Three patients (14.3%) had an IPI score of 2 but had extranodal infiltration. Fourteen patients (66.7%) had double-expression of DLBCL and seven (33.3%) had TP53 mutations. With a median follow-up of 24.8 (95% CI 17.0-31.6) months, the objective response rate was 81.0%, and 11 patients (52.4%) achieved complete remission. The median progression-free survival (PFS) was 12.8 months, and the median overall survival (OS) was not reached. The 1-year PFS rate was 52.4% (95% CI 29.8% -74.3%), and the 1-year OS rate was 80.1% (95% CI 58.1% -94.6%). Moreover, 18 patients (85.7%) had grade 1-2 cytokine-release syndrome, and two patients (9.5%) had grade 1 immune effector cell-associated neurotoxicity syndrome. Conclusion: Zanubrutinib-based combination bridging regimen of CAR-T therapy for r/r DLBCL has high efficacy and demonstrated a good safety profile.
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Affiliation(s)
- Y Lu
- Department of Hematology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - H Liu
- Department of Hematology, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - S G Ye
- Department of Hematology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - L L Zhou
- Department of Hematology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - X Luo
- Department of Hematology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - X Y Dang
- Department of Hematology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - X G Yuan
- Department of Hematology, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - W B Qian
- Department of Hematology, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - A B Liang
- Department of Hematology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - P Li
- Department of Hematology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
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Shen WH, Zhou LL, Li XP, Cong RP, Huang QY, Zheng LP, Wang JW. Bamboo polysaccharides elicit hypocrellin A biosynthesis of a bambusicolous fungus Shiraia sp. S9. World J Microbiol Biotechnol 2023; 39:341. [PMID: 37828354 DOI: 10.1007/s11274-023-03789-9] [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: 06/09/2023] [Accepted: 10/02/2023] [Indexed: 10/14/2023]
Abstract
Hypocrellin A (HA), a fungal perylenequinone from bambusicolous Shiraia species, is a newly developed photosensitizer for photodynamic therapy in cancer and other infectious diseases. The lower yield of HA is an important bottleneck for its biomedical application. This study is the first report of the enhancement of HA production in mycelium culture of Shiraia sp. S9 by the polysaccharides from its host bamboo which serve as a strong elicitor. A purified bamboo polysaccharide (BPSE) with an average molecular weight of 34.2 kDa was found to be the most effective elicitor to enhance fungal HA production and characterized as a polysaccharide fraction mainly composed of arabinose and galactose (53.7: 36.9). When BPSE was added to the culture at 10 mg/L on day 3, the highest HA production of 422.8 mg/L was achieved on day 8, which was about 4.0-fold of the control. BPSE changed the gene expressions mainly responsible for central carbon metabolism and the cellular oxidative stress. The induced generation of H2O2 and nitric oxide was found to be involved in both the permeabilization of cell membrane and HA biosynthesis, leading to enhancements in both intra- and extracellular HA production. Our results indicated the roles of plant polysaccharides in host-fungal interactions and provided a new elicitation technique to improve fungal perylenequinone production in mycelium cultures.
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Affiliation(s)
- Wen Hao Shen
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Lu Lu Zhou
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Xin Ping Li
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Rui Peng Cong
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Qun Yan Huang
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Li Ping Zheng
- Department of Horticultural Sciences, Soochow University, Suzhou, 215123, China.
| | - Jian Wen Wang
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China.
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Tang SH, Mai QY, Zhou LL, Yang ZQ, Zhang WF, Wang Z. [Investigation of a carbon monoxide poisoning accident with a hidden source]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:619-622. [PMID: 37667160 DOI: 10.3760/cma.j.cn121094-20220718-00375] [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] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
In June 2022, a carbon monoxide poisoning accident with hidden source occurred in a bonded gold/silver wire manufacturing enterprise in Guangzhou, causing 10 people to be poisoned, of which 1 was caused by carbon monoxide poisoning and 9 by carbon monoxide contact reaction. The symptoms were dizziness, fatigue and vomiting. After 5 to 7 h, the saturation of carboxyhemoglobin in finger pulse was 4% to 10%, and the saturation of carboxyhemoglobin in blood gas biochemical analysis was 1.9% to 5.8%. The concentration of carbon monoxide detected in the carbon borne purification plant of the enterprise was 34.46-37.26 mg/m(3). It was judged that the accident was carbon monoxide poisoning caused by carbon monoxide gas being transported to the work post along the gas transmission pipeline due to abnormal operation of the carbon borne purification plant. By investigating the source and cause of poison, this paper provides a warning for the similar process to prevent similar events, and provides a new idea for the identification of chemical poisoning risk. At the same time, it is warned that similar enterprises should fully consider the risk of poisoning under specific circumstances, strengthen equipment maintenance and repair, and prevent the occurrence of similar incidents.
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Affiliation(s)
- S H Tang
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - Q Y Mai
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - L L Zhou
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - Z Q Yang
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - W F Zhang
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - Z Wang
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
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Zhou LL, Shen WH, Ma YJ, Li XP, Wu JY, Wang JW. Structure characterization of an exopolysaccharide from a Shiraia-associated bacterium and its strong eliciting activity on the fungal hypocrellin production. Int J Biol Macromol 2023; 226:423-433. [PMID: 36473526 DOI: 10.1016/j.ijbiomac.2022.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/07/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022]
Abstract
Hypocrellins are fungal perylenequinones (PQs) from Shiraia fruiting bodies and potential photosensitizers for cancer photodynamic therapy. Shiraia fruiting bodies harbor diverse bacterial communities dominated by Pseudomonas. The present study was to characterize the exopolysaccharide (EPS) of P. fulva SB1 which acted as an elicitor to stimulate the PQ accumulation of the host Shiraia. A bacterial EPS named EPS-1 was purified from the culture broth of P. fulva SB1, which consisted of mannose (Man) and glucose (Glc) with an average molecular weight of 9.213 × 104 Da. EPS-1 had (1 → 2)-linked α-mannopyranose (Manp) backbone and side chains of α-D-Manp-(1→ and α-D-Manp-(1 → 6)-β-D-Glcp-(1 → 6)-α-D-Manp(1 → group attached to the O-6 positions of (1 → 2)-α-D-Manp. EPS-1 at 30 mg/L stimulated both intracellular and extracellular hypocrellin A (HA) by about 3-fold of the control group. The EPS-1 treatment up-regulated the expression of key genes for HA biosynthesis. The elicitation of HA biosynthesis by EPS-1 was strongly dependent on the induced reactive oxygen species (ROS) generation. The results may provide new insights on the role of bacterial EPS in bacterium-fungus interactions and effective elicitation strategy for hypocrellin production in mycelial cultures.
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Affiliation(s)
- Lu Lu Zhou
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Wen Hao Shen
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Yan Jun Ma
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Xin Ping Li
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Jian-Yong Wu
- Research Institute for Future Food, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong.
| | - Jian Wen Wang
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China.
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Su YW, Liu YM, Zhang JW, Zhou LL, Du WJ, Wang Z. [The risk prediction value of paraquat poisoning dose, urine protein and myocardial enzymes]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:8-13. [PMID: 36725288 DOI: 10.3760/cma.j.cn121094-20220214-00067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Objective: To explore the value of paraquat (PQ) intake, urine protein and myocardial enzyme indexes in judging the prognosis of patients with acute PQ poisoning. Methods: From September to December 2021, all 201 patients with acute PQ poisoning admitted to Guangzhou Twelfth People's Hospital from January 2010 to December 2019 were selected as the research objects. Based on follow-up results 60 days after poisoning, the research objects were divided into survival group (n=78) and death group (n=123) . The differences in information about poisoning, treatment plan, PQ intake, urine protein, creatine kinase, creatine kinase isoenzyme, lactate dehydrogenase, and α-hydroxybutyrate dehydrogenase between the two groups of patients were compared and analyzed. Logistic regression and Cox regression were used to analyze the correlation between poisoning outcome and PQ intake, urine protein and myocardial enzymes. ROC curve and principal component analysis were used to explore high-efficiency indicators for predicting the outcome of acute PQ poisoning. Results: The PQ intake[50 (20, 100) ml], urine protein (total rank 15570.50) , creatine kinase[ (336.36±261.96) U/L], creatine kinase isoenzyme[ (43.91±43.74) U/L], lactate dehydrogenase [ (346.01±196.50) U/L], α-hydroxybutyrate dehydrogenase content[ (271.23±11.92) U/L] of patients in the death group were all higher than the survival group[15 (10, 20) ml, 4730.50, (187.78±178.06) U/L, (18.88±15.50) U/L, (190.92±60.50) U/L, (152.60±48.34) U/L, respectively] (P<0.05) . The outcome of acute PQ poisoning was positively correlated with PQ intake, urine protein, creatine kinase, creatine kinase isoenzyme, lactate dehydrogenase, and α-hydroxybutyrate dehydrogenase (P<0.05) . Multivariate logistic regression and multivariate Cox regression analysis showed that creatine kinase, creatine kinase isoenzyme, lactate dehydrogenase and α-hydroxybutyrate dehydrogenase was positively correlated with the prognosis of patients with acute PQ poisoning (P<0.05) . ROC curve analysis and principal component analysis showed that the combined indexes of PQ intake, urine protein and myocardial enzymes had the highest efficacy and weight in judging the prognosis of patients (AUC=0.91, weight coefficient=0.19, sensitivity=0.76, specificity=0.89) . When the combined score was ≥4, the probability of accurately predicting the death of patients was as high as 91% (positive predictive value=0.91) . Conclusion: PQ intake, urine protein combined with creatine kinase, creatine kinase isoenzyme, lactate dehydrogenase, and α-hydroxybutyrate dehydrogenase has high value in predicting the prognosis of patients with acute PQ poisoning.
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Affiliation(s)
- Y W Su
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - Y M Liu
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - J W Zhang
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - L L Zhou
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - W J Du
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - Z Wang
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
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Wang ZH, Ren Q, Liu GL, Zhou LL, Ba TH, Han XY, Ji LN. [Individualized treatment of glucokinase-maturity-onset diabetes of the young with pregnancy and analysis of glycemic variability during pregnancy: a case report]. Zhonghua Nei Ke Za Zhi 2023; 62:91-94. [PMID: 36631043 DOI: 10.3760/cma.j.cn112138-20220511-00359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Z H Wang
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - Q Ren
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - G L Liu
- Department of Obstetrics, Peking University People's Hospital, Beijing 100044, China
| | - L L Zhou
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - T H Ba
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - X Y Han
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
| | - L N Ji
- Department of Endocrinology, Peking University People's Hospital, Beijing 100044, China
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Tang SH, Zhang C, Zhou LL, Li YQ, Xu SX, Wang Z. [An investigation and analysis of an acute occupational methyl acetate poisoning]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2021; 39:943-946. [PMID: 35164427 DOI: 10.3760/cma.j.cn121094-20201012-00569] [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: 06/14/2023]
Abstract
This article investigated an occupational chemical poisoning incident that occurred in a certain place in Guangdong Province in September 2020, detected the air at the scene, and analyzed the clinical data of the poisoned patients. The peripheral blood methanol concentrations of the three patients were 307.76 mg/L, 354.80 mg/L and 454.14 mg/L when they were admitted to the hospital. The raw and auxiliary materials were analyzed for volatile organic components. Methyl acetate was detected in the finished glue, synthetic resin and compound machine post glue in the glue room, and the relative percentages were 23.05%, 32.79% and 31.68%, respectively. Through comprehensive analysis, it was judged that this incident was an acute occupational methyl acetate poisoning incident, and 3 workers were poisoned.
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Affiliation(s)
- S H Tang
- Guangzhou Twelfth People's Hospital, Guangzhou Occupational Disease Prevention and Treatment Hospital, Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - C Zhang
- Guangzhou Twelfth People's Hospital, Guangzhou Occupational Disease Prevention and Treatment Hospital, Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - L L Zhou
- Guangzhou Twelfth People's Hospital, Guangzhou Occupational Disease Prevention and Treatment Hospital, Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - Y Q Li
- Guangzhou Twelfth People's Hospital, Guangzhou Occupational Disease Prevention and Treatment Hospital, Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - S X Xu
- Guangzhou Twelfth People's Hospital, Guangzhou Occupational Disease Prevention and Treatment Hospital, Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - Z Wang
- Guangzhou Twelfth People's Hospital, Guangzhou Occupational Disease Prevention and Treatment Hospital, Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
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Zhou LL, Wen XX. [Four-year follow-up of hard- and soft-tissue reconstruction for peri-implantitis in anterior esthetic zone: a case report]. Zhonghua Kou Qiang Yi Xue Za Zhi 2021; 56:1135-1137. [PMID: 34763411 DOI: 10.3760/cma.j.cn112144-20210413-00171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- L L Zhou
- Department of Periodontology, The Second Affiliated Hospital of Zhejiang University School of Medicine, School of Stomatology, and Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310009, China
| | - X X Wen
- Jueer Stomatology Clinic, Hangzhou 310000, China
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Li XP, Zhou LL, Guo YH, Wang JW. The signaling role of extracellular ATP in co-culture of Shiraia sp. S9 and Pseudomonas fulva SB1 for enhancing hypocrellin A production. Microb Cell Fact 2021; 20:144. [PMID: 34301268 PMCID: PMC8305905 DOI: 10.1186/s12934-021-01637-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 04/26/2021] [Accepted: 07/16/2021] [Indexed: 12/20/2022] Open
Abstract
Background Adenosine 5′-triphosphate (ATP) plays both a central role as an intracellular energy source, and a crucial extracellular signaling role in diverse physiological processes of animals and plants. However, there are less reports concerning the signaling role of microbial extracellular ATP (eATP). Hypocrellins are effective anticancer photodynamic therapy (PDT) agents from bambusicolous Shiraia fungi. The co-culture of Shiraia sp. S9 and a bacterium Pseudomonas fulva SB1 isolated from Shiraia fruiting bodies was established for enhanced hypocrellin A (HA) production. The signaling roles of eATP to mediate hypocrellin biosynthesis were investigated in the co-culture. Results The co-culture induced release of eATP at 378 nM to the medium around 4 h. The eATP release was interdependent on cytosolic Ca2+ concentration and reactive oxygen species (ROS) production, respectively. The eATP production could be suppressed by the Ca2+ chelator EGTA or abolished by the channel blocker La3+, ROS scavenger vitamin C and NADPH oxidase inhibitor diphenyleneiodonium chloride (DPI). The bacterium-induced H2O2 production was strongly inhibited by reactive blue (RB), a specific inhibitor of membrane purinoceptors, but dependent on the induced Ca2+ influx in the co-culture. On the other hand, the application of exogenous ATP (exATP) at 10–300 µM to Shiraia cultures also promoted fungal conidiation and HA production, both of which were blocked effectively by the purinoceptor inhibitors pyridoxalphosphate-6-azophenyl-2′, 4′-disulfonic acid (PPADS) and RB, and ATP hydrolase apyrase. Both the induced expression of HA biosynthetic genes and HA accumulation were inhibited significantly under the blocking of the eATP or Ca2+ signaling, and the scavenge of ROS in the co-culture. Conclusions Our results indicate that eATP release is an early event during the intimate bacterial–fungal interaction and eATP plays a signaling role in the bacterial elicitation on fungal metabolites. Ca2+ and ROS are closely linked for activation of the induced ATP release and its signal transduction. This is the first report on eATP production in the fungal–bacterial co-culture and its involvement in the induced biosynthesis of fungal metabolites. Graphic abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12934-021-01637-9.
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Affiliation(s)
- Xin Ping Li
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Lu Lu Zhou
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Yan Hua Guo
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Jian Wen Wang
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China.
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Lin DN, Li QL, He XJ, Li H, Liao LB, He H, Zhou LL, Li Z, Liu XL, Liu QF, Zhou HS, Cao R. [Diagnosis of adult Philadelphia chromosome-like acute lymphoblastic leukemia by fluorescence in situ hybridization]. Zhonghua Xue Ye Xue Za Zhi 2021; 41:749-755. [PMID: 33113607 PMCID: PMC7595857 DOI: 10.3760/cma.j.issn.0253-2727.2020.09.008] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
目的 建立应用荧光原位杂交技术(FISH)筛查成人Ph样急性淋巴细胞白血病(ALL)的体系。 方法 根据Ph样ALL的遗传学特征,设计了针对ABL1、ABL2、JAK2、EPOR、CRLF2、CSF1R、PDGFRB、P2RY8等基因断裂重排的FISH探针;对BCR-ABL1、ETV6-RUNX1、MLL基因断裂重排和E2A断裂重排均阴性的B-ALL,采用FISH进行Ph样ALL筛查,并结合流式免疫表型、靶向二代测序突变检测和RNA测序进行Ph样ALL诊断分析。 结果 2016年1月至2019年4月,南方医院血液科收治189例成人B-ALL,经FISH和(或)PCR检测,BCR-ABL1、ETV6-RUNX1、MLL断裂重排或E2A断裂重排阳性者共83例;其余106例患者接受Ph样ALL FISH探针筛查,其中,12例(11.3%)检出典型的Ph样ALL特异基因断裂重排,2例检出基因缺失。经RNA测序进一步验证,FISH检测Ph样ALL基因断裂重排结果灵敏度为71.4%,特异度为95.8%。综合免疫表型、靶向二代测序突变检测和RNA测序,共诊断融合基因阳性Ph样ALL 14例(13.2%)。 结论 FISH技术检测Ph样ALL具有较高的特异性,结合免疫表型和测序技术可完善诊断体系。
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Affiliation(s)
- D N Lin
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Q L Li
- Department of Hematology, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530000, China
| | - X J He
- Department of Hematology, General Hospital of Southern Theatre Command of PLA, Guangzhou, 510010, China
| | - H Li
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - L B Liao
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - H He
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - L L Zhou
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Z Li
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - X L Liu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Q F Liu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - H S Zhou
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - R Cao
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
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Tan YX, Xu N, Huang JX, Wu WE, Liu L, Zhou LL, Liu XL, Yin CX, Xu D, Zhou X. [Analysis of gene mutations and clinic features in 108 patients with myeloproliferative neoplasm]. Zhonghua Xue Ye Xue Za Zhi 2020; 41:576-582. [PMID: 32810965 PMCID: PMC7449771 DOI: 10.3760/cma.j.issn.0253-2727.2020.07.008] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Objective: To analyze the genetic mutations and clinical features of the subtypes of classical BCR-ABL-negative myeloproliferative neoplasm (MPN) . Methods: Mutations of 108 newly diagnosed BCR-ABL-negative MPN patients [including 55 patients with essential thrombocytopenia (ET) , 24 with polycythemia vera (PV) , and 29 with primary myelofibrosis (PMF) ] were identified using next-generation sequencing with 127-gene panel, and the relationship between gene mutations and clinical features were analyzed. Results: Total 211 mutations in 32 genes were detected in 100 MPN patients (92.59% ) , per capita carried (1.96±1.32) mutations. 85.19% (92/108) patients carried the driver gene (JAK2, CALR, MPL) mutations, 69.56% (64/92) of these patients carried at least 1 additional gene mutation. In descending order of mutation frequency, the highest frequency was for activation signaling pathway genes (42.2% , 89/211) , methylation genes (17.6% , 36/211) , and chromatin-modified genes (16.1% , 34/211) . There was a significant difference in the number of mutations in the activation signaling pathway genes, epigenetic regulatory genes, spliceosomes, and RNA metabolism genes among the three MPN subgroups. The average number of additional mutations in PMF patients was higher than that in ET and PV patients (1.69±1.39, 0.67±0.70, 0.87±1.22, χ(2)=13.445, P=0.001) . MPN-SAF-TSS (MPN 10 score) (P=0.006) and myelofibrosis level (P=0.015) in patients with ≥ 3 mutant genes were higher and the HGB level (P=0.002) was lower than in those with<3 mutations. Twenty-six patients (24.1% ) carried high-risk mutation (HMR) , and patients with HMR had lower PLT (P=0.017) , HGB levels (P<0.001) , and higher myelofibrosis level (P=0.010) and MPN10 score (P<0.001) . The frequency of ASXL1 mutations was higher in PMF than in PV patients (34.5% vs. 4.2% , P=0.005) . PMF patients with ASXL1 had lower levels of PLT and HGB (P=0.029 and 0.019) . Conclusion: 69.56% of MPN patients carry at least one additional mutation, and 24.1% patients had HMR. Each subgroup had different mutation patterns. PMF patients had a higher average number of additional gene mutations, especially a higher frequency of ASXL1 mutation; PLT and HGB levels were lower in ASXL1 mutation PMF patients.
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Affiliation(s)
- Y X Tan
- Department of Hematology, Nan fang Hospital, Southern Medical University, Guangzhou 510515, China
| | - N Xu
- Department of Hematology, Nan fang Hospital, Southern Medical University, Guangzhou 510515, China
| | - J X Huang
- Department of Hematology, Yuebei People's Hospital, Shaoguan 512025, China
| | - W E Wu
- Department of Hematology, Nan fang Hospital, Southern Medical University, Guangzhou 510515, China
| | - L Liu
- Department of Hematology, Nan fang Hospital, Southern Medical University, Guangzhou 510515, China
| | - L L Zhou
- Department of Hematology, Nan fang Hospital, Southern Medical University, Guangzhou 510515, China
| | - X L Liu
- Department of Hematology, Nan fang Hospital, Southern Medical University, Guangzhou 510515, China
| | - C X Yin
- Department of Hematology, Nan fang Hospital, Southern Medical University, Guangzhou 510515, China
| | - D Xu
- Department of Hematology, Nan fang Hospital, Southern Medical University, Guangzhou 510515, China
| | - X Zhou
- Department of Hematology, Nan fang Hospital, Southern Medical University, Guangzhou 510515, China
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Zhou LL, Shi ZJ, Wen XX, Sun WL, Wu YM, Liu W. [Multidisciplinary treatment of patient with periodontitis and vertical bone resorption of mandibular molars: a case report]. Zhonghua Kou Qiang Yi Xue Za Zhi 2020; 55:412-416. [PMID: 32486572 DOI: 10.3760/cma.j.cn112144-20190828-00330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- L L Zhou
- Department of Periodontology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Z J Shi
- Department of Oral Medicine, School of Stomatology, Zhejiang Chinese Medicine University, Hangzhou 310031, China
| | - X X Wen
- Jueer Stomatology Clinic, Hangzhou 310012, China
| | - W L Sun
- Department of Periodontology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Y M Wu
- Department of Periodontology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - W Liu
- Department of Periodontology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
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Wang C, Zhu Y, Zhou LL, Zhao YY, Han XY, Ji LN. [Application of the superior thyroid artery peak systolic velocity in differentiating Graves' disease from autoimmune thyroiditis]. Zhonghua Nei Ke Za Zhi 2020; 59:207-212. [PMID: 32146747 DOI: 10.3760/cma.j.issn.0578-1426.2020.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the clinical value of the superior thyroid artery peak systolic velocity (STA-PSV) for the differential diagnosis of autoimmune thyrotoxicosis. Methods: A total of 301 patients with newly diagnosed thyrotoxicosis and without any anti-thyroid drug intervention were collected from the Department of Endocrinology and Metabolism, Peking University People's Hospital from Jan. 2015 to Oct. 2018. Among them, 241 patients were with Graves' disease (GD) and 60 patients were with autoimmune thyroiditis (AIT). STA-PSV, thyroid function and thyrotropin receptor antibody (TRAb) were determined. A multiple linear regression was used to identify factors associated with STA-PSV. A receiver operating characteristic (ROC) curve and area under the curve (AUC) were used to evaluate the discriminating ability of STA-PSV to GD. Results: STA-PSV leves in GD group were significantly higher than those in AIT group [61.00 (41.00, 86.50) cm/s vs. 34.50 (25.25, 46.00) cm/s, P<0.001]. The ROC curve analysis showed that the AUC was 0.790 (95%CI 0.734-0.845), and 49.5cm/s was the optimal cutoff point for the diagnosis of GD, in which the sensitivity was 64.3% and the specificity was 83.3%. In all patients with thyrotoxicosis, multiple linear regression analyses showed free thyroxine (FT(4)) (β=0.371, 95%CI 0.005-0.010, P<0.001) and TRAb (β=0.138, 95%CI 0.001-0.014, P=0.035) were positively associated with STA-PSV. Conclusions: The STA-PSV is positively associated with FT(4) and TRAb levels, and it is a helpful marker in differential diagnosis between GD and AIT.
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Affiliation(s)
- C Wang
- Department of Endocrinology and Metabolism, Peking University People's Hospital, Beijing 100044, China(is working on Department of Endocrinology, Tangshan People's Hospital, Tangshan 063000, China)
| | - Y Zhu
- Department of Endocrinology and Metabolism, Peking University People's Hospital, Beijing 100044, China
| | - L L Zhou
- Department of Endocrinology and Metabolism, Peking University People's Hospital, Beijing 100044, China
| | - Y Y Zhao
- Department of Nuclear Medicine, Peking University People's Hospital, Beijing 100044, China
| | - X Y Han
- Department of Endocrinology and Metabolism, Peking University People's Hospital, Beijing 100044, China
| | - L N Ji
- Department of Endocrinology and Metabolism, Peking University People's Hospital, Beijing 100044, China
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Xiang L, Zhou TJ, Zhou LL, Luo J, Qin Z, You JZ, Jian J, Zhao ZY, Zhou YS, Ye YC, Wang HR, Wang BN, Li MY. Influenza a virus and Streptococcus pneumonia coinfection potentially promotes bacterial colonization and enhances B lymphocyte depression and reduction. J BIOL REG HOMEOS AG 2019; 33:1437-1449. [PMID: 31637902 DOI: 10.23812/19-240-a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Influenza has frequently been epidemic in recent years. However, the mechanisms of severe pneumonia with postinfluenza Streptococcus pneumoniae (SP) secondary infection have not been fully understood. In this study, we explored the mechanisms of pneumonia in postinfluenza A virus (IAV) infection via a mouse model. Mice were intranasally inoculated with SP three days after IAV inoculation. We then collected samples at three time points to dynamically observe the pathological progression. In IAV infection alone, lymphocyte infiltration and widened alveolar intervals were observed. In the blood, levels of the CD19+, CD19+CD21+ and CD19+CD79β+B lymphocyte subpopulations were reduced, and IFN-γ and IL-10 were elevated. Slight atrophy was seen in the spleen, which was due to splenic B lymphocyteinitiated apoptosis through the mitochondrial pathway. When SP infection occurred after IAV infection, the pulmonary inflammation was significantly aggravated; a fair number of lymphocytes and neutrophils infiltrated simultaneously with exfoliated bronchial epithelial cells, vascular endothelial cells, widened alveolar septum and hemorrhaging. Increasing edema fluid and bacteria accumulated in the alveolar cavity. Decreased CD19+, CD19+CD21+ and CD19+CD79β+B lymphocyte subpopulations and increased interferon gamma (IFN-γ) or interleukin 10 (IL-10) were more prominent compared to those with viral infection alone. Spleen atrophy resulting from coinfection was more obvious because of massive splenic B lymphocyte apoptosis through the mitochondrial pathway compared to viral infection alone. This study shows that although inflammation caused by SP infection alone was temporary, preceding IAV infection provided favorable conditions for SP colonization and multiplication by destroying lung structure and suppressing humoral immunity. Synergistic IAV-SP coinfection is likely to facilitate more SP colonization and promote B lymphocyte-suppression and reduction. Eventually, the pneumonia worsened.
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Affiliation(s)
- L Xiang
- Department of Microbiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu City, Sichuan P.R. China
| | - T J Zhou
- Department of Pathology, the Affiliated Hospital of Southwest Medical University, Luzhou City, Sichuan Province, China
| | - L L Zhou
- Department of Microbiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu City, Sichuan P.R. China
| | - J Luo
- Department of Clinical Laboratory, the First Affiliated Hospital of Chengdu Medical College, Chengdu City, Sichuan Province, China
| | - Z Qin
- Department of Microbiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu City, Sichuan P.R. China
| | - J Z You
- Department of Microbiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu City, Sichuan P.R. China
| | - J Jian
- Department of Microbiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu City, Sichuan P.R. China
| | - Z Y Zhao
- Department of Microbiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu City, Sichuan P.R. China
| | - Y S Zhou
- Department of Pathogen Biology, Preclinical Medicine College, Southwest Medical University, Luzhou City, Sichuan Province, China
| | - Y C Ye
- Experiment Center of Pathogen Biology and Immunology, Preclinical Medicine College, Southwest Medical University, Luzhou City, Sichuan Province, China
| | - H R Wang
- Department of Microbiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu City, Sichuan P.R. China
| | - B N Wang
- Department of Microbiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu City, Sichuan P.R. China
| | - M Y Li
- Department of Microbiology, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu City, Sichuan P.R. China
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Zhou LL, Luo GX, Zhu LH, Wei Q, Wei YQ, Feng R, Li YQ. [Detection of promoter and 3' UTR mutation in A20 gene of a case with T cell lymphoma cell leukemia]. Zhonghua Xue Ye Xue Za Zhi 2019; 39:851-854. [PMID: 30369207 PMCID: PMC7348281 DOI: 10.3760/cma.j.issn.0253-2727.2018.10.012] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To clarify the characteristics of the A20 regulatory changes by analyzing mutations in the non-coding region of the A20 gene in patients with T-cell lymphoma leukemia (T-LCL) . Methods: PCR and nucleotide sequence analysis were used to detect mutations in the non-coding region of the A20 gene, and DNA samples from PBMCs of 52 cases of T-LCL and 99 healthy controls. Results: A missense mutation (c.-672T>G) was detected in the A20 gene promoter from one T-LCL patient, which has been registered as a SNP (rs139054966) in gene bank. Meanwhile, a new mutation was detected in the 3' UTR mRNA (3916 (C>G) ) . These two mutations were absent in other T-LCL samples and controls. Conclusion: The rs139054966 (c.-672T>G) and 3916 (C>G) mutations in the A20 gene were detected in T-LCL patients for the first time. There was also rs139054966 located on the binding region of the transcription factor P53, and its significance remained to be further clarified.
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Affiliation(s)
| | - G X Luo
- Department of Hematology, the First Affiliated Hospital, Jinan University, Guangzhou 510630, China
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Yu LM, Zhu YS, Xu CZ, Zhou LL, Xue ZX, Cai ZZ. High calpain-1 expression predicts a poor clinical outcome and contributes to tumor progression in pancreatic cancer patients. Clin Transl Oncol 2018; 21:924-932. [PMID: 30565085 DOI: 10.1007/s12094-018-02006-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 09/15/2018] [Accepted: 12/04/2018] [Indexed: 12/30/2022]
Abstract
BACKGROUND Pancreatic cancer (PC) is a highly aggressive and metastatic disease, with an elevated mortality rate. It is, therefore, crucial to assess factors affecting the prognosis of PC patients. Meanwhile, calpain-1 is associated with malignant tumor progression and metastasis. Thus, it is meaningful to evaluate the relationship between calpain-1 and PC. MATERIALS AND METHODS Calpain-1 protein expression was assessed by immunohistochemistry in 96 pancreatic cancer samples and paired adjacent non-cancerous specimens. In addition, calpain-1 protein levels were assessed in six PC cell lines by western blot (WB). Next, PC cells were transfected with calpain-1 siRNA, and silencing was confirmed by WB. Finally, cell proliferation, colony formation, migration and invasion assays, and cell apoptosis analysis were performed to examine the effects of calpain-1 knockdown on proliferation, growth, apoptosis, migration, and invasion in PC cells. RESULTS The results showed that calpain-1 was overexpressed in PC tissues and cells. Meanwhile, calpain-1 overexpression was associated with tumor site (P = 0.029), metastasis (P = 0.000), and TNM stage (P = 0.000), but showed no associations with histological grade (P = 0.396), age (P = 0.809), sex (P = 1.000), and lesion size (P = 0.679). The Kaplan-Meier method demonstrated that the low calpain-1 expression group had increased overall survival (OS) compared with patients expressing high calpain-1 levels (28.7 ± 4.1 vs. 17.0 ± 2.3 months) (P = 0.005). Besides, calpain-1 in PC cells was successfully silenced by liposome-mediated RNA interference, resulting in reduced cell growth, invasion, and metastasis in PC cells, with no effect on apoptosis. CONCLUSION The above findings suggest that calpain-1 should be considered a potential biomarker for PC prognosis and therapy.
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Affiliation(s)
- L M Yu
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China
| | - Y S Zhu
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China
| | - C Z Xu
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China
| | - L L Zhou
- Department of Pathology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China
| | - Z X Xue
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China.
| | - Z Z Cai
- Department of Gastroenterology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China.
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Huang Y, Zhao RW, Zhang RX, Yu HZ, SiTu HR, Liu CH, Wang H, Zhou LL, Zhuang WJ, Jin ZC, Pang ZH. [Application of image-guided system in endoscopic sinus and skull base surgery]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:1856-1859. [PMID: 30550126 DOI: 10.13201/j.issn.1001-1781.2018.24.003] [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] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Indexed: 11/12/2022]
Abstract
Objective:To evaluate the applicative value of image-guided system in endoscopic sinus and skull base surgeries. Method:A total of 103 endoscopic surgical procedures were performed.All these procedures were conducted with the utilization of image-guided system, among which there were 92 cases of sinonasal-skull base surgery(including nasal sinuses resection of benign and malignant tumors involving skull base lesions, the cumulative orbital lesion resection of nasal sinus lesions, etc. ), 6 repair of cerebrospinal fluid leak, 3 pituitary adenoma resection, 2 traumatic neuropathy optic nerve decompression. Result:With the utilization of image-guided system, all patients had successful surgery without major and minor complications. The image-guided system provided high precision with short registration time. Conclusion:Image-guided system can help the surgeon to identify accurately the vital anatomic landmarks of sinus and skull base, improving surgical accuracy and safety as well as reducing or avoiding the intraoperative and postoperative complications.
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Affiliation(s)
- Y Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Huadong Hospital, Fudan University, Shanghai, 200040,China
| | - R W Zhao
- Department of Otorhinolaryngology Head and Neck Surgery, Huadong Hospital, Fudan University, Shanghai, 200040,China
| | - R X Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Huadong Hospital, Fudan University, Shanghai, 200040,China
| | - H Z Yu
- Department of Otorhinolaryngology Head and Neck Surgery, Huadong Hospital, Fudan University, Shanghai, 200040,China
| | - H R SiTu
- Department of Otorhinolaryngology Head and Neck Surgery, Huadong Hospital, Fudan University, Shanghai, 200040,China
| | - C H Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Huadong Hospital, Fudan University, Shanghai, 200040,China
| | - H Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Huadong Hospital, Fudan University, Shanghai, 200040,China
| | - L L Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Huadong Hospital, Fudan University, Shanghai, 200040,China
| | - W J Zhuang
- Department of Otorhinolaryngology Head and Neck Surgery, Huadong Hospital, Fudan University, Shanghai, 200040,China
| | - Z C Jin
- Department of Otorhinolaryngology Head and Neck Surgery, Huadong Hospital, Fudan University, Shanghai, 200040,China
| | - Z H Pang
- Department of Otorhinolaryngology Head and Neck Surgery, Huadong Hospital, Fudan University, Shanghai, 200040,China
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Zhou LL, Dong JL, Huang G, Sun ZL, Wu J. MicroRNA-143 inhibits cell growth by targeting ERK5 and MAP3K7 in breast cancer. ACTA ACUST UNITED AC 2017; 50:e5891. [PMID: 28746466 PMCID: PMC5520219 DOI: 10.1590/1414-431x20175891] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 05/04/2017] [Indexed: 01/24/2023]
Abstract
This study aimed to investigate the function and mechanism of microRNA-143 (miR-143) in the occurrence and development of breast cancer (BC). A total of 30 BC tissues, 30 corresponding noncancerous tissues, and 10 normal control (NC) breast tissues were obtained to detect the levels of miR-143, extracellular signal-regulated kinase 5 (ERK5) and mitogen-activated protein 3 kinase 7 (MAP3K7) using RT-qPCR, western blotting or immunohistochemistry. The correlation of miR-143 with ERK5 or MAP3K7 was evaluated using Pearson correlation analysis. MCF-7 cells were transiently transfected with miR-143 mimic, miR-143 inhibitor, miR-143 mimic/inhibitor + si-ERK5, si-MAP3K7 or si-cyclin D1. Then, cell growth was evaluated by MTT assay and the expressions of phospho-ERK5 (p-ERK5), ERK5, p-MAP3K7, MAP3K7 and cyclin D1 were detected by western blotting. Results showed that, compared with noncancerous tissues or NC breast tissues, miR-143 level was decreased, while p-ERK5, ERK5, p-MAP3K7 and MAP3K7 expressions were increased in BC tissues (all P<0.01). The miR-143 level was negatively correlated with the mRNA level of ERK5 or MAP3K7 (r=-4.231 or r=-4.280, P<0.01). In addition, up-regulated miR-143 significantly decreased the expressions of p-ERK5, ERK5, p-MAP3K7, MAP3K7 and cyclin D1 (all P<0.01), as well as cell viability in MCF-7 cells (all P<0.05) while the effect of down-regulated miR-143 was the opposite. In conclusion, both ERK5 and MAP3K7 may be the target genes of miR-143. Increased expression of miR-143 can inhibit cell growth, which may be associated with ERK5 and MAP3K7 expressions in BC.
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Affiliation(s)
- L L Zhou
- Department of Cardiology, Huaihe Hospital of Henan University, Kaifeng, China
| | - J L Dong
- Department of Pathology, Huaihe Hospital of Henan University, Kaifeng, China
| | - G Huang
- Department of Pathology, Huaihe Hospital of Henan University, Kaifeng, China
| | - Z L Sun
- Department of Pathology, Huaihe Hospital of Henan University, Kaifeng, China
| | - J Wu
- Department of Pathology, Huaihe Hospital of Henan University, Kaifeng, China
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Meng YK, Zhang J, Yang Y, Zhou LL, Yan TF, Wang Y, Yang HS, Shi GD, Chen DY, Shi JG, Guo YF, Jia LS. [Clinical diagnosis and management of cervical spondylotic amyotrophy]. Zhonghua Yi Xue Za Zhi 2017; 97:1320-1323. [PMID: 28482434 DOI: 10.3760/cma.j.issn.0376-2491.2017.17.010] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical characteristics and surgical treatment of cervical spondylotic amyotrophy. Methods: Thirteen patients(13 man) with proximal (10) and distal(3) cervical spondylotic amyotrophy between November 2014 and September 2016 were included in this study. The average age of the patients was 55 (range, 47-66) years. The sex, age, clinical course, type of amyotrophy, lesion segment and postdecompression improvement in muscle power were reviewed. Results: Of 13 cervical spondylotic amyotrophy patients, 9 were performed on with cervical disectomy, 2 were performed on with cervical posterior operation, 2 remainding patients received nonoperative treatment. Cervical spondylotic amyotrophy patients were followed up 6-22 (average 10.6) months, muscle power of 4 patients (all proximal-type)were improved completely (the average recovery time were 4.4 months), muscle power of 6 patients were improved uncompletely, 1 patients failed to improve, the 2 remainding patients received nonoperative treatment had no change. Conclusion: Cervical spondylotic amyotrophy as a rare type of cervical spondylotic disorder, It should distinguish cervical spondylotic amyotrophy from amyotrophic lateral sclerosis, especially in the early stage of amyotrophic lateral sclerosis. A surgical treatment is recommended as the first line of proximal-type CSA, especially those with serious compression. It is important that clinicians should be aware that distal-type CSA had a poor results, resulting in a lower lower satisfaction, especially those with no, or insignificant, sensory disturbance.
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Affiliation(s)
- Y K Meng
- Department of Spine Surgery, Changzheng Hospital, the Second Military Medical University, Shanghai 200003, China
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Zhou LL, Wang WZ, Yang YC, Zhuang JH. [Research status of vestibular migraine]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1983-1986. [PMID: 29798284 DOI: 10.13201/j.issn.1001-1781.2016.24.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Indexed: 11/12/2022]
Abstract
Pathogenesis, clinical characteristics and treatments of vestibular migraine(VM) in recent years were retrospectively analyzed. The results showed that VM had diversified vestibular symptoms. VM may show a mild central and peripheral vestibular dysfunction during ictal and interictal period. Although no specificity, it could provide important references to identify VM. The pathogenesis of VM, which depended upon the clues of migraine, had been supposed to be probably related to genetic susceptibility, neurotransmitter changes induced by trigeminal nerve, and abnormal integration of central signal, and further exploration of functional abnormalities in brain-related areas showed by functional imaging technology may shed light on the pathogenesis of VM. Until now, the pharmacotherapies of VM have been still based on the treatment of migraine and the efficacy remains to be clarified.
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Ye YM, Wang FM, Jin C, Zhou LL, Chen DQ. [Hospital costs and related influencing factors in patients with acute poisoning]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:528-530. [PMID: 27682491 DOI: 10.3760/cma.j.issn.1001-9391.2016.07.013] [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: 06/06/2023]
Abstract
Objective: To investigate the hospital costs and related influencing factors in patients with acute poisoning. Methods: A retrospective analysis was performed for the general status and hospital costs of 373 patients with acute poisoning who were admitted to The Second Affiliated Hospital of Wenzhou Medical College from January 2009 to March 2015. The questionnaires were completed, the data were entered into Excel forms, and SPSS 18.0 was used to perform statistical analysis. Results: Among the 373 patients, 44.8% committed suicide and 31.1% were poisoned by accidental contact; 42.6% were poisoned by pesticides, and 32.7% were poisoned by drugs. After treatment, 64.1% achieved improvements, whereas 1.3% died. The highest hospital cost reached 62 710.26 RMB, and the lowest was 64.64 RMB (median 4 328 RMB) . The patients with an older age and a longer length of hospital stay tended to have higher hospital costs; the patients who underwent catharsis, mechanical ventilation, and blood purification and were admitted to the intensive care unit had relatively high hospital costs. Conclusion: The patients with acute poisoning have high hospital costs. Poisoning caused by pesticides and drugs should be prevented and treated with priority, so as to reduce the heavy economic burden caused by acute poisoning.
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Affiliation(s)
- Y M Ye
- The 2nd Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325027, China
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Feng PP, Zhai FJ, Jiang SF, Wu JZ, Xue L, Zheng MM, Zhou LL, Meng CY, Cao MY, Zhang YS. [Blood cerebrospinal fluid barrier damage of rats induced by lead acetate or nano-lead exposure]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:340-5. [PMID: 27514413 DOI: 10.3760/cma.j.issn.1001-9391.2016.05.006] [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
OBJECTIVE To investigate the damage of blood-cerebrospinal fluid barrier (BCB) of rats induced by lead and nano-lead exposure in order to provide the basis for mechanism study of lead neurotoxicity. METHODS 39 male rats were randomly divided into control group, lead acetate exposed group and nano-lead exposed group. Rats in lead acetate exposed group and nano-lead exposed group were given 20 mg/kg lead acetate or nano-lead by oral gavage and rats in control groups were given the same amount saline for 9 weeks.Morris maze was used to test the learning function, serum albumin and CSF albumin were determined by ELISA. Confocal laser scanning microscope was applied to detect ZO-1 and Occludin protein expression in choroid plexus, real time-PCR was used to test the expression of ZO-1 and Occludin mRNA expression. Pathological changes of choroid plexus cells were observed by the electron microscopy. RESULTS Compared with the control group, the escape latency of rats in lead acetate or nano-lead exposure group were longer and times of across platform were less. The levels of CSF albumin and the CSF albumin index in lead acetate or nano-lead exposed rats were obviously higher, and the fluorescence intensity of ZO-1, Occludin as well as mRNA expressions were lower than those in control group(P<0.05). Compared with lead acetate exposed group, the levels of CSF albumin and the CSF albumin index in nano-lead exposure group were higher. The fluorescence intensity and mRNA expressions of ZO-1, Occludin in nano-lead exposure group were than those in lead acetate group(P<0.05). Electron microscopy revealed that lead acetate or nano-lead exposure could induce shorter microvillus of choroid plexus epithelial cells, mitochondrion destruction and partial disconnection in intracellular junctions between two adjacent epithelial cells. CONCLUSION Lead acetate and nano-lead exposed can result in the blood-cerebrospinal fluid barrier damage, which may involve in the process of lead induced neurotoxicity. Meanwhile, nano-lead exposure can induced in more worse damage in terms of blood-results in blood-cerebrospinal fluid barrier function.
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Affiliation(s)
- P P Feng
- School of Public Health, North China University of Science and Technology, Tangshan 063000, China
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Wang DF, Zhou LL, Zhou HL, Hou GY, Zhou X, Li W. Effects of Piper sarmentosum extract on the growth performance, antioxidant capability and immune response in weaned piglets. J Anim Physiol Anim Nutr (Berl) 2016; 101:105-112. [PMID: 27045971 DOI: 10.1111/jpn.12517] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Accepted: 03/12/2016] [Indexed: 11/30/2022]
Abstract
The biological properties of Piper sarmentosum render it a potential substitute for antibiotics in livestock feed. This study evaluated the effects of P. sarmentosum extract (PSE) on the growth performance, antioxidant capability and immune response of weaned piglets. Eighty 21-d-old weaned piglets were selected and randomly allocated to one of four dietary treatments with five replicates of four pigs each. The dietary treatments consisted of a basal diet supplemented with 0 (T0), 50 (T50), 100 (T100) or 200 (T200) mg/kg PSE. The feeding trial lasted 4 weeks. The results revealed that the T50 group had the highest average daily gain (ADG) and average daily feed intake (ADFI) throughout the feeding trial (p < 0.05). Additionally, the T50 group had higher (p < 0.05) serum glutathione peroxidase activity (GSH-Px) and lower (p < 0.05) serum malondialdehyde (MDA) levels than the T0 group at 4 weeks post-weaning (p < 0.05). Serum levels of interleukin-1β (IL-1β) and tumour necrosis factor-α (TNF-α) decreased, while serum levels of interleukin-4 (IL-4), interleukin-10 (IL-10) and transforming growth factor-β (TGF-β) increased by PSE supplementation at 4 weeks post-weaning (p < 0.05). PSE supplementation upregulated the mRNA expression of IL-4, IL-10 and TGF-β and downregulated the mRNA expression of TNF-α, IL-1β and interleukin-6 (IL-6) in the ileal mucosal layer of piglets (p < 0.05). In summary, our study findings revealed that PSE supplementation improved the antioxidant capability, and reduced inflammation, which may be beneficial to weaned piglet health.
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Affiliation(s)
- D F Wang
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, China
| | - L L Zhou
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, China
| | - H L Zhou
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, China
| | - G Y Hou
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, China
| | - X Zhou
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, China
| | - W Li
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, China.,College of Agriculture, Hainan University, Haikou, Hainan, China
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Liu XT, Ren L, Zhou LL, Xiao QY, Deng Y, Liu EM. ORMDL3 variants associated with bronchiolitis susceptibility in a Chinese population. Genet Mol Res 2015; 14:19155-62. [PMID: 26782568 DOI: 10.4238/2015.december.29.25] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Recent studies revealed common genetic risks for both viral bronchiolitis and asthma. Genome-wide association studies revealed that rs7216389 in the ORMDL3 gene is associated with childhood asthma. We conducted a case-control study examining the associations between ORMDL3 polymorphisms (rs7216389, rs12603332, and rs11650680) and bronchiolitis susceptibility/viral findings among 247 infant bronchiolitis cases and 190 healthy controls. We genotyped single nucleotide polymorphisms by matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry and detected respiratory viruses with multiplex reverse transcriptase-polymerase chain reaction. Only the genotype and allele frequencies of rs7216389 significantly differed between bronchiolitis and controls. The frequencies of the TT homozygote and the T allele of rs7216389 were significantly higher in the bronchiolitis patients (P = 0.0325; P = 0.0089, respectively). Polymorphisms were not associated with bronchiolitis severity. Cases were further stratified by viral infection, but no significant differences in the ORMDL3 genotype between the virus-detected group (e.g., respiratory syncytial virus alone, respiratory virus alone, virus detected) and no-virus-detected group were observed. Bronchiolitis is associated with the ORMDL3 gene in Chinese children, and there were no significant associations between genetic variations and disease severity or respiratory viruses. The TT homozygote and the T allele of rs7216389 in ORMDL3 increased bronchiolitis risk. The rs7216389 polymorphism may be a predictor for identifying infants with predisposition to virus-induced wheezing to persistent asthma.
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Yang B, Zhou M, Zhou LL, Xue ND, Zhang SL, Lan CY. Variability of cadmium, lead, and zinc tolerance and accumulation among and between germplasms of the fiber crop Boehmeria nivea with different root-types. Environ Sci Pollut Res Int 2015; 22:13960-13969. [PMID: 25948381 DOI: 10.1007/s11356-015-4549-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 04/14/2015] [Indexed: 06/04/2023]
Abstract
Crop germplasms substantially vary in their tolerance for and accumulation of heavy metals, and assessment of this variability plays a significant role in selecting species to use in phytoremediation projects. Here, we examined germplasm-variations in cadmium (Cd), lead (Pb), and zinc (Zn) tolerance and accumulation in ramie (Boehmeria nivea), a fiber crop native to China, which has received little attention. In an 8-week greenhouse test, fourteen germplasms of ramie, among and within deep, middle, and shallow rooted-types, were compared for growth and metal accumulation traits. Results showed that both tolerance and accumulation traits varied across germplasms and rooted-types. The deep rooted-type germplasms produced more biomass and had higher tolerance to metals than the two others. In addition, considerable variations in metal accumulation were observed among plant organs (root, stem, and leaf), rooted-types, germplasms, and metal supply. However, the observed variations in metal tolerance and accumulation among both germplasms and rooted-types were not significant in most cases. In addition to supporting the idea of a certain degree of constitutional metal tolerance for ramie, our results also contribute to deep-rooted germplasms of ramie as a good candidate, rather than middle-/shallow- ones as a least-bad option, for the remediation of multi metal-contaminated soils.
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Affiliation(s)
- B Yang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China,
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Zhou LL, Liang JK, Lin QM, Huang ZT. Effect and mechanism of different ways of transplanting bone marrow mesenchymal stem cells in cardiopulmonary resuscitation in rats. Genet Mol Res 2014; 13:7937-49. [PMID: 25299109 DOI: 10.4238/2014.september.29.7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The effect and mechanism of different ways of transplanting bone marrow mesenchymal stem cells (MSCs) were explored for treating cardiopulmonary resuscitation in a rat model. Rats were divided into the cardiopulmonary resuscitation group (Group Con), the stereotactic lateral ventricle transplantation group (Group LV), the internal carotid artery transplantation group (Group A), and the femoral vein transplantation group (Group V). MSCs were transplanted in Groups LV, A, and V. The MSC transplantation groups had a significantly higher neurological score than Group Con on days 3 and 7 after recovery (P < 0.05), and the Group LV score was the highest in all groups (P < 0.05). On day 3 after recovery, the MSC count of Group LV was significantly higher than those of Groups A and V (P < 0.01). On day 7 after recovery, the MSC count in the hippocampus of Group LV was significantly higher than those of Groups A and V (P < 0.05). On day 3 after recovery, the S100B level of Group LV was significantly lower than those of Groups A and V (P < 0.05). On day 7 after recovery, the S100B level was not significantly different between the MSC transplantation groups (P > 0.05). The expressions of vascular endothelial growth factor and brain-derived neurotrophic factor did increased significantly in the MSC transplantation groups on day 7 after recovery, particularly Group LV. Therefore, MSC therapy could significantly improve nerve function after cardiopulmonary resuscitation, and stereotactic lateral ventricle injection transplantation is an optimal method.
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Affiliation(s)
- L L Zhou
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - J K Liang
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Q M Lin
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Z T Huang
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
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Zhang J, Liu XF, Liu Y, Xu LZ, Zhou LL, Tang LL, Zhuang J, Li TT, Guo WQ, Hu R, Qiu DS, Han DW. Environmental risk factors for women with polycystic ovary syndrome in china: a population-based case-control study. J BIOL REG HOMEOS AG 2014; 28:203-211. [PMID: 25001653] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Polycystic ovary syndrome (PCOS) is a common reproductive endocrinology disease with heterogeneous phenotype. Environmental factors are thought to be involved in the development of PCOS. The present study aimed to explore the potential environmental risk factors of PCOS. A cross-sectional study and stratified population-based case-control study were carried out. Pre-designed questionnaires were prepared, including questions about medication history, contact history of endocrine disruptors (EDs), environment and habituation. Fasting blood was collected for measurement of sex hormone, glucose and insulin. Matched logistic regression analysis was used to find the potential independent risk factor of PCOS. One thousand eight hundred fifty-four participants (aged 12-44 years) were analyzed in the cross-sectional investigation. One hundred sixty-nine PCOS patients and 338 matched controls were compared. PCOS patients were more frequent than controls in eating plastic-packaged food (p=0.001), contacting pesticide (p=0.021), eating fruit with pericarp (p=0.001), living beside a garbage heap (p=0.001), working at an acid plant (p=0.028), taking Chinese patent drugs (p=0.001), smoking (p=0.028) and drinking alcohol (p=0.001). However, PCOS patients were less likely to use kitchen ventilators (p=0.002), eat canned food (p=0.049), contact decorated materials, use skin care products (p=0.01) and cosmetics (p=0.027). No difference was found in taking antiepileptic drugs (p=0.93). Eating plastic-packaged food (p=0.001, OR=44.449), eating fruit with pericarp (p=0.03, OR=5.7) and drinking alcohol (p=0.001, OR=29.632) were found to be the independent risk factors for PCOS. The existence of an association between EDs and PCOS was proved. Plastic-packaged food, fruit with pericarp and drinking alcohol should be avoided as possible as we can. However, the causal relationships among these factors and PCOS should be proved by further research.
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Affiliation(s)
- J Zhang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, Peoples Republic of China
| | - X F Liu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, Peoples Republic of China
| | - Y Liu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, Peoples Republic of China
| | - L Z Xu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, Peoples Republic of China
| | - L L Zhou
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, Peoples Republic of China
| | - L L Tang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, Peoples Republic of China
| | - J Zhuang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, Peoples Republic of China
| | - T T Li
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, Peoples Republic of China
| | - W Q Guo
- Department of Ultrasound, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, Peoples Republic of China
| | - R Hu
- Clinical Laboratory center, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, Peoples Republic of China
| | - D S Qiu
- Clinical Laboratory center, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, Peoples Republic of China
| | - D W Han
- Clinical Laboratory center, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, Peoples Republic of China
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Zhang YB, Wang LH, Zhang DY, Zhou LL, Guo YX. Ultrasound-assisted extraction and purification of schisandrin B from Schisandra chinensis (Turcz.) Baill seeds: optimization by response surface methodology. Ultrason Sonochem 2014; 21:461-6. [PMID: 24084334 DOI: 10.1016/j.ultsonch.2013.09.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 08/25/2013] [Accepted: 09/08/2013] [Indexed: 05/20/2023]
Abstract
The objective of this study is to develop a process consisting of ultrasonic-assisted extraction, silica-gel column chromatography and crystallization to optimize pilot scale recovery of schisandrin B (SAB) from Schisandra chinensis seeds. The effects of five independent variables including liquid-solid ratio, ethanol concentration, ultrasonic power, extraction time, and temperature on the SAB yield were evaluated with fractional factorial design (FFD). The FFD results showed that the ethanol concentration was the only significant factor for the yield of SAB. Then, with the liquid-solid ratio 5 (mL/g) and ultrasonic power 600 W, the other three parameters were further optimized by means of response surface methodology (RSM). The RSM results revealed that the optimal conditions consisted of 95% ethanol, 60 °C and 70 min. The average experimental SAB yield under the optimum conditions was found to be 5.80 mg/g, which was consistent with the predicted value of 5.83 mg/g. Subsequently, a silica gel chromatographic process was used to prepare the SAB-enriched extract with petroleum ether/acetone (95:5, v/v) as eluents. After final crystallization, 1.46 g of SAB with the purity of 99.4% and the overall recovery of 57.1% was obtained from 400 g seeds powder. This method provides an efficient and low-cost way for SAB purification for pharmaceutical industrial applications.
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Affiliation(s)
- Y B Zhang
- School Pharmaceutical Engineering, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang 110016, PR China
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Liu CY, Zhou LL, Cheng Q, Jiang SN, Sheng J, Sun JD, Zhao JY. Effect of bradykinin on renal mesangial cell proliferation and extracellular matrix secretion. Genet Mol Res 2014; 13:490-8. [PMID: 24535877 DOI: 10.4238/2014.january.21.18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Recent studies have found that bradykinin (BK) plays a role in delaying glomerulosclerosis, although the mechanism of this phenomenon remains unclear. Mesangial cell proliferation (MCP) and extracellular matrix (ECM) secretion are important mechanisms for glomerulosclerosis. This study investigated the impact of BK on the platelet-derived growth factor (PDGF)-induced proliferation of mesangial cells, and evaluated its correlations with the extracellular signal-related kinase (ERK) signaling pathway. The results showed that on its own, 10-1000 mg/L BK promoted MCP and ECM secretion and induced ERK phosphorylation. However, BK administration after PDGF pre-incubation inhibited PDGF-induced MCP, ECM secretion, and ERK phosphorylation. The BK B2 receptor-specific antagonist, HOE-140, and tyrosine phosphatase inhibitor (OV) effectively blocked the function of BK. In summary, these results demonstrated that BK has a bidirectional effect on MCP and ECM secretion: when used alone, it promoted effects on these phenomena, but these effects were inhibited when combined with PDGF. This suggests that the role of BK might be achieved through inhibiting activation of the PDGF-induced ERK1/2 pathway.
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Affiliation(s)
- C Y Liu
- Department of Nephrology, Second Hospital of Dalian Medical University, Shahekou District, Dalian Liaoning Province, China
| | - L L Zhou
- Department of Nephrology, Second Hospital of Dalian Medical University, Shahekou District, Dalian Liaoning Province, China
| | - Q Cheng
- Department of Nephrology, Second Hospital of Dalian Medical University, Shahekou District, Dalian Liaoning Province, China
| | - S N Jiang
- Department of Nephrology, Second Hospital of Dalian Medical University, Shahekou District, Dalian Liaoning Province, China
| | - J Sheng
- Department of Nephrology, Second Hospital of Dalian Medical University, Shahekou District, Dalian Liaoning Province, China
| | - J D Sun
- Department of Nephrology, Second Hospital of Dalian Medical University, Shahekou District, Dalian Liaoning Province, China
| | - J Y Zhao
- Department of Nephrology, Second Hospital of Dalian Medical University, Shahekou District, Dalian Liaoning Province, China
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Lei T, Bi Y, Gao MJ, Gao SM, Zhou LL, Zheng HL, Chen XD. HES1 inhibits adipogenesis of porcine mesenchymal stem cells via transcriptional repression of FAD24. Domest Anim Endocrinol 2013; 45:28-32. [PMID: 23611667 DOI: 10.1016/j.domaniend.2013.03.003] [Citation(s) in RCA: 15] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 03/16/2013] [Accepted: 03/18/2013] [Indexed: 11/15/2022]
Abstract
Adipogenesis, the development from preadipocytes or mesenchymal stem cells (MSCs) to mature adipocytes, is regulated by a network of signaling pathways and transcription factors. The involvement of Notch signaling and its effector HES1 in adipogenesis has been investigated in several studies with conflicting results. The underlying mechanisms remain unclear because of the lack of information about HES1 target genes during adipocyte differentiation. As a novel gene transiently up-regulated in early adipogenesis, FAD24 functions as a positive regulator of adipocyte differentiation in both preadipocytes and MSCs. In the present study, we report that the expression level of FAD24 is inversely associated with that of HES1 in porcine MSCs after adipogenic induction. Enforced overexpression of HES1 in MSCs during the early stage of adipogenesis significantly repressed the transcription of FAD24 (P < 0.01) and the other pro-adipogenic genes (P < 0.05), resulting in reduced intracellular lipid accumulation. Sequence analysis showed that porcine FAD24 harbors an evolutionarily conserved HES1 binding site in its proximal promoter region. Functional HES1, but not its dominant-negative mutant, markedly reduced the promoter activity of FAD24 (P < 0.01). Site-directed mutation and chromatin immunoprecipitation further confirmed that HES1 inhibits FAD24 transcription by direct binding to the promoter. Taken together, we identified FAD24 as a novel downstream target of HES1 during adipogenesis. Our data suggest that HES1-mediated repression of FAD24 transcription at the early stage of adipocyte differentiation may contribute to the impaired adipogenesis induced by the Notch-HES1 signaling pathway.
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Affiliation(s)
- T Lei
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
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Guo YX, Han J, Zhang DY, Wang LH, Zhou LL. Aqueous two-phase system coupled with ultrasound for the extraction of lignans from seeds of Schisandra chinensis (turcz.) Baill. Ultrason Sonochem 2013; 20:125-132. [PMID: 22668796 DOI: 10.1016/j.ultsonch.2012.05.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 05/08/2012] [Accepted: 05/11/2012] [Indexed: 06/01/2023]
Abstract
In this study the potential use of an aqueous two phase system (ATPS) coupled with ultrasound for the extraction of lignans from Schisandra chinensis seeds was evaluated and optimized using response surface methodology (RSM). The main bioactive components, schizandrin (SA), schisantherin A (SAA) and deoxyschizandrin (DSA) were selected as markers. The partitioning behavior of lignans in different salt-types of ATPS was compared. The optimization ATPS of 25% (w/w) (NH(4))(2)SO(4) and 19% (w/w) ethanol were selected based on their higher upper phase partitioning coefficient (>74) and the recovery (>93%) for three markers. Using the optimized ATPS solvent, the RMS results showed 20:1 of solvent:solid, 800 W and 61.1 min were the optimal ultrasound assisted extraction conditions, under which 13.10mg/g SA, 1.87 mg/g SAA and 1.84 mg/g DSA were recovered in the upper phase, whereas the wasted stigmas accumulated in the lower phase. Compared with 80% ethanol (v/v) ultrasonic extraction, similar yields were obtained, but the present method exhibited higher extraction purity for the selective extraction of lignans from S. chinensis seeds.
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Affiliation(s)
- Y X Guo
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China.
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Guo YX, Han J, Zhang DY, Wang LH, Zhou LL. An ammonium sulfate/ethanol aqueous two-phase system combined with ultrasonication for the separation and purification of lithospermic acid B from Salvia miltiorrhiza Bunge. Ultrason Sonochem 2012; 19:719-724. [PMID: 22265019 DOI: 10.1016/j.ultsonch.2011.12.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 12/18/2011] [Accepted: 12/24/2011] [Indexed: 05/31/2023]
Abstract
We studied the effect of ultrasonication extraction technology combined with ammonium sulfate/ethanol aqueous two-phase system (ATPS) for the separation of lithospermic acid B (LAB) from Salvia miltiorrhiza Bunge. According to the literature and preliminary studies, ammonium sulfate concentration, ethanol concentration, pH, ultrasonication power, ultrasonication time and the ratio of solvent-to-solid were investigated using a single factor design to identify the factors affecting separation. Taking into consideration a simultaneous increase in LAB recovery (R (%)) and partition coefficient (K), the best performance of the ATPS was obtained at 25°C and pH 2 using ammonium sulfate 22% (w/w) and ethanol 30% (w/w). To keep the solvent-to-solid ratio at 10, response surface methodology was used to find the optimal ultrasonication power and ultrasonication time. Quadratic models were predicted for LAB yield in the upper phase. Optimal conditions of 572.1 W ultrasonication power and 42.2 min produced a maximum yield of LAB of 42.16 mg g(-1) sample. There was no obvious degradation of LAB with ultrasound under the applied conditions, and the experimental yield of LAB was 42.49 mg g(-1) sample and the purity was 55.28% (w/w), which was much higher than that obtained using conventional extraction. The present study demonstrated that ultrasound coupled with aqueous two-phase systems is very efficient tool for the extraction and purification of LAB from Salvia miltiorrhiza Bunge.
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Affiliation(s)
- Y X Guo
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang 116016, PR China.
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Zhang Y, Lei T, Huang JF, Wang SB, Zhou LL, Yang ZQ, Chen XD. The link between fibroblast growth factor 21 and sterol regulatory element binding protein 1c during lipogenesis in hepatocytes. Mol Cell Endocrinol 2011; 342:41-7. [PMID: 21664250 DOI: 10.1016/j.mce.2011.05.003] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 05/11/2011] [Accepted: 05/20/2011] [Indexed: 10/18/2022]
Abstract
Recently fibroblast growth factor 21 (FGF21) has been identified as a potent regulator in glucose and lipid homeostasis. Here, we firstly investigated the metabolic role of FGF21 in human liver-derived HepG2 cells, and suggested that overexpression of FGF21 suppressed triglyceride accumulation by inhibiting the transcription of the gene necessary for de novo lipogenesis. The potential mechanism of FGF21 regulating lipogenesis was also explored, which revealed that FGF21 repressed the transcription of sterol regulatory element binding protein 1c (SREBP1c), an essential transcription factor promoting expression of lipogenesis-related genes. Overexpression of FGF21 ameliorated the up-regulation of SREBP1c and fatty acid synthase (FAS) in HepG2 cells elicited by FFAs treatment. Moreover, FGF21 could inhibit the transcriptional levels of the key genes involved in processing and nuclear translocation of SREBP1c, and decrease the protein amount of mature SREBP1c. Unexpectedly, overexpression of SREBP1c in HepG2 cells could also inhibit the endogenous FGF21 transcription. Further experiments demonstrated that SREBP1c could significantly attenuate the promoter activity of FGF21. In conclusion, our data identifies a clear link between FGF21 and SREBP1c during lipogenesis in hepatocyte in culture.
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Affiliation(s)
- Y Zhang
- College of Life Science and Technology, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, PR China
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Abstract
Interspecific facilitation on phosphorus uptake was observed in faba bean/maize intercropping systems in previous studies. The mechanism behind this, however, remained unknown. Under nitrate supply, the difference in rhizosphere acidification potential was studied by directly measuring pH of the solution and by visualizing and quantifying proton efflux of roots between faba bean (Vicia faba L. cv. Lincan No.5), soybean (Glycine max L. cv. Zhonghuang No. 17) and maize (Zea mays L. cv. Zhongdan No.2) in monoculture and intercrop, supplied without or with 0.2 mmol L(-1) P as KH(2)PO(4). The pH of the nutrient solution grown faba bean was lower than initial pH of 6.0 from day 1 to day 22 under P deficiency, whereas the pH of the solution with maize was declined from day 13 after treatment. Growing soybean increased solution pH irrespective of P supply. Under P deficiency, the proton efflux of faba bean both total (315.25 nmol h(-1) plant(-1)) and specific proton efflux (0.47 nmol h(-1) cm(-1)) was greater than that those of soybean (21.80 nmol h(-1) plant(-1) and 0.05 nmol h(-1) cm(-1), respectively). Faba bean had much more ability of rhizosphere acidification than soybean and maize. The result can explain partly why faba bean utilizes sparingly soluble P more effectively than soybean and maize do, and has an important implication in understanding the mechanism behind interspecific facilitation on P uptake by intercropped species.
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Affiliation(s)
- L L Zhou
- College of Resources and Environmental Sciences, China Agricultural University, Key Laboratory of Plant and Soil Interactions, Ministry of Education, Beijing, PR China
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Zhou LL, Sun DP, Hu LY, Li YW, Yang JZ. Effect of addition of sodium alginate on bacterial cellulose production by Acetobacter xylinum. J Ind Microbiol Biotechnol 2007; 34:483-9. [PMID: 17440758 DOI: 10.1007/s10295-007-0218-4] [Citation(s) in RCA: 110] [Impact Index Per Article: 6.5] [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: 03/29/2006] [Accepted: 03/06/2007] [Indexed: 11/24/2022]
Abstract
Bacterial cellulose (BC) production by Acetobacter xylinum NUST4.1 was carried out in the shake flask and in a stirred-tank reactor by means of adding sodium alginate (NaAlg) into the medium. When 0.04% (w/v) NaAlg was added in the shake flask, BC production reached 6.0 g/l and the terminal yield of the cellulose was 27% of the total sugar initially added, compared with 3.7 g/l and 24% in the control, respectively. The variation between replicates in all determinations was less than 5%. During the cultivation in the stirred-tank reactor, the addition of NaAlg changed the morphology of cellulose from the irregular clumps and fibrous masses entangled in the internals to discrete masses dispersing into the broth, which indicates that NaAlg hinders formation of large clumps of BC, and enhances cellulose yield. Because the structure of cellulose is changed depending on the culture condition such as additives, structural characteristics of BC produced in the NaAlg-free and NaAlg medium are compared using scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD). SEM photographs show some differences in reticulated structures and ribbon width and FT-IR spectra indicate that there is the hydrogen bonding interaction between BC and NaAlg, then X-ray diffraction (XRD) analysis reveals that BC produced with NaAlg-added has a lower crystallinity and a smaller crystalline size. The results show that enhanced yields and modification of cellulose structure occur in the presence of NaAlg.
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Affiliation(s)
- L L Zhou
- Bioengineering Department, Institute of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
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Zhou LL, Zhou LY, Luo KQ, Chang DC. Smac/DIABLO and cytochrome c are released from mitochondria through a similar mechanism during UV-induced apoptosis. Apoptosis 2005; 10:289-99. [PMID: 15843890 DOI: 10.1007/s10495-005-0803-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
During apoptosis, a key event is the release of Smac/DIABLO (an inhibitor of XIAP) and cytochrome c (Cyt-c, an activator of caspase-9) from mitochondria to cytosol. It was not clear, however, whether the releasing mechanisms of these two proteins are the same. Using a combination of single living-cell analysis and immunostaining techniques, we investigated the dynamic process of Smac and Cyt-c release during UV-induced apoptosis in HeLa cells. We found that YFP-labeled Smac and GFP-labeled Cyt-c were released from mitochondria in the same time window, which coincided with the mitochondrial membrane potential depolarization. Furthermore, using immunostaining, we found that the endogenous Smac and Cyt-c were always released together within an individual cell. Finally, when cells were pre-treated with caspase inhibitor (z-VAD-fmk) to block caspase activation, the process of Smac release, like that of Cyt-c, was not affected. This was true for both YFP-labeled Smac and endogenous Smac. These results suggest that in HeLa cells, both Smac and Cyt-c are released from mitochondria during UV-induced apoptosis through the same permeability transition mechanism, which we believe is triggered by the aggregation of Bax in the outer mitochondrial membrane to form lipid-protein complex.
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Affiliation(s)
- L L Zhou
- Department of Biology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
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He SC, Lin XH, Zhou ZY, Zhou LL, Li SM. [Postnatal development of brainstem auditory evoked potential and middle latency response in rats]. Zhongguo Ying Yong Sheng Li Xue Za Zhi 2001; 17:125-128. [PMID: 21171396] [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: 05/30/2023]
Abstract
AIM To compare the postnatal development of brainstem auditory evoked potential (BAEP) with that of middle latency response (MLR) in rats. METHODS The postnatal development of BAEP and MLR had been studied continuously for 10 weeks in the same groups of rat Pups. RESULTS BAEP and MLR emerged at day 14 and 17 respectively. The peak latencies of BAEP's waves shortened systematically with age, especially during 3-4 weeks. The peak latency of wave I reached adult value at day 29, and the peak latencies of the rest waves reached adult ones at day 70. However, the peak latencies of wave Po and Na in the first time evoked MLR had already been at adult values. Though the peak latencies of wave Pa, Nb and Pb also shortened with age, they reached adult ones quickly at day 20-23. The wave amplitudes of BAEP's wave I ,III, IV and MLR's wave Nb, Pb increased quickly with age during 3-4 weeks. Their peak values were much bigger than adult ones and then decreased gradually. CONCLUSION The postnatal development of BAEP and MLR proceeded in a similar way in rats, but the peak latencies of MLR reached adult values much earlier than that of BAEP.
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Affiliation(s)
- S C He
- Department of Physiology, Medical School of Jinan University, Guangzhou 510632, China
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Abstract
Transcription factors are known to regulate gene transcription through the recognition and binding of specific DNA sequences in the promoter or enhancer regions of many genes. Keratoconus is a cornea-thinning disease in which upregulated expression of degradative enzymes and downregulated expression of protease inhibitors have been demonstrated. In view of the alteration in gene expression for multiple proteins, five common transcription factors, AP1, AP2, CREB, Sp1, and NF-kappa B were examined for their possible roles in keratoconus. Immunostaining experiments and Western blotting showed that Sp1 exhibited enhanced expression in keratoconus corneas. Increased binding of Sp1 consensus sequence oligonucleotides with nuclear extracts from the epithelium of keratoconus corneas was also seen by gel mobility shift assays. This is believed to be a first demonstration connecting Sp1 alteration to a human disease. The elevated Sp1 expression may contribute to the enzyme and inhibitor abnormalities found in keratoconus corneas.
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Affiliation(s)
- R B Whitelock
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago College of Medicine, 60612, USA
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Xue ZY, Yu ML, Su RJ, Zhou LL, Liu ZJ. Partial azurophilic granule deficiency. Report of 2 cases with ultrastructural and light-and-electron-microscopic cytochemical observation. Chin Med J (Engl) 1993; 106:474-7. [PMID: 8222902] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The neutrophils in 2 patients with atopic disease were studied. Ultrastructurally, a number of abnormal azurophilic granules (AG) with low electron-density (Case 1) and secondary lysosomes with "myelinoid membranes" figures (Case 2) were found. Myeloperoxidase (MPO) and acid phosphatase activity were detected by light cytochemical techniques, and showed significantly low values. The deficiency of MPO and abnormal distribution of AG were also demonstrated by electron microscopic cytochemical technique. The neutrophils from the parents revealed changes similar to the patients. This study suggests that since genetic partial deficiency of neutrophil AG enzymes existed, the phagocytosed substances were only partially degraded, leading to accumulation of substances with antigenicity, and became trigger event of atopic disease.
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Affiliation(s)
- Z Y Xue
- Department of Dermatology, First Affiliated Hospital, Nanjing Medical College
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Wu QX, Ye GY, Li XY, Liu Q, Zhou LL. A preliminary study on serological activity of a phenolic glycolipid from Mycobacterium leprae in sera from patients with leprosy, tuberculosis and normal controls. LEPROSY REV 1986; 57:129-36. [PMID: 2427906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Wu QX, Ye GY, Zhou LL, Shu HW, Liu Q, Li XY, Ma ZX, Li ZW. Determination of antibodies in dried blood from earlobes of leprosy patients by enzyme-linked immunosorbent assay--a preliminary report. Int J Lepr Other Mycobact Dis 1985; 53:565-70. [PMID: 3910746] [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: 01/08/2023]
Abstract
An enzyme-linked immunosorbent assay (ELISA) was used with soluble antigens of Mycobacterium leprae. All blood samples collected from the earlobes of 109 leprosy patients and 100 healthy controls (from a non-endemic area of leprosy) were absorbed with M. vaccae, BCG, cardiolipin, and lecithin according to the technology of the FLA-ABS test before being tested in the ELISA. The results (at a 1:200 blood dilution) showed that antibody activity gradually increased from TT to LL (mean OD values: TT = 0.43, BT = 0.62, BB = 0.72, BL = 0.84, LL = 0.89), and the rates of positive reactions were 100% in all classifications of patients except TT (66.6%). Antibody activity in the controls was less pronounced than in leprosy patients, their mean OD value being only 0.15. We suggest that the ELISA is highly sensitive and specific for the determination of anti-M. leprae antibodies, and is useful for clinical serodiagnosis and for the study of subclinical infections in leprosy.
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Cheng BG, Wang NJ, Zhang YH, Huang L, Zhang SP, Wu CY, Zhou LL, Yue PL. Ultrastructural study of 62 cases of human primary hepatic carcinoma. Chin Med J (Engl) 1985; 98:575-81. [PMID: 3004839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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Li R, Zhou LL, Li X, Zhong JJ, Li CH, Liao ZY. [Studies on the fate of artesunate by GC-MS, HPLC and TLCS methods]. Yao Xue Xue Bao 1985; 20:485-90. [PMID: 4096239] [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: 01/08/2023]
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48
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Zhou LL. [Seasons for collecting Chinese drugs]. Zhong Yao Tong Bao 1984; 9:150-2. [PMID: 6241099] [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: 01/19/2023]
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