1
|
Zeng Q, Liu T, Guo XX, Han C, Liu J, Tao H. [Application and comparison of three occupational health risk assessment methods in an automobile manufacturing industry]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2024; 42:271-276. [PMID: 38677990 DOI: 10.3760/cma.j.cn121094-20230216-00043] [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: 04/29/2024]
Abstract
Objective: Three occupational health risk assessment methods were used to assess the occupational health risk of noise exposed posts in an automobile manufacturing enterprise. According to the results, the selection of risk assessment methods and risk management of such occupational noise enterprises were provided. Methods: Form April to November 2021, The occupational health field survey was carried out in an automobile manufacturing industry in Tianjin. The occupational health MES risk assessment method, occupational health risk index risk assessment method and Australian occupational hazard risk assessment method were used to evaluate the occupational health risk of noise-exposed posts in this enterprise, and the evaluation results of different methods were analyzed and compared. Results: The average value of L(Aeq, 8 h) in the four workshops of automobile manufacturing industry was 82.95 dB (A) , and the noise detection exceeding rate was 22.41% (26/116) . The LAeq, 8h and exceeding rate noise of welding workshop were higher than those of other workshops (χ(2)=23.56, 32.94, P<0.01) . The three occupational health risk assessment methods have the same risk assessment results for the four major workshops. The assembly and painting workshops are level 4 risk (possible risk) , and the stamping and welding workshops are level 3 risk (significant risk) . Conclusion: Occupational noise has certain potential hazards to workers in automobile manufacturing enterprises. Therefore, in the future work, corresponding organizational management measures should be taken to improve the working environment and reduce the actual exposure level of workers in order to protect the health of occupational workers.
Collapse
Affiliation(s)
- Q Zeng
- Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
| | - T Liu
- Department of Prevention Medicine, Nankai University Hospital, Tianjin 300071, China
| | - X X Guo
- Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
| | - C Han
- Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
| | - J Liu
- Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
| | - H Tao
- Department of Prevention Medicine, Nankai University Hospital, Tianjin 300071, China
| |
Collapse
|
2
|
Zhao XL, Meng LL, Zhang QY, Zhang XL, Guo XX, Lyu B, Ji Y. [Gastrointestinal tumors with SWI/SNF complex deficiency: a clinicopathological analysis of 36 cases]. Zhonghua Bing Li Xue Za Zhi 2024; 53:269-275. [PMID: 38433055 DOI: 10.3760/cma.j.cn112151-20230818-00078] [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: 03/05/2024]
Abstract
Objective: To investigate the clinicopathological characteristics of gastrointestinal tumors with SWI/SNF complex deficiency and to perform a prognostic analysis of the patients. Methods: Gastrointestinal tumor cases with SWI/SNF complex deficiency expression diagnosed at the Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China from August 2021 to May 2023 were collected. Hematoxylin and eosin (HE) stained slides were reviewed, and immunohistochemical results were analyzed. Clinical and pathological information was recorded, and relevant literature was reviewed. Results: A total of 36 cases of gastrointestinal tumor with loss of SWI/SNF complex expression were identified, including 28 males (77.8%) and 8 females (22.2%). The average age at diagnosis was 70 years (range 48-85 years). Clinical staging showed 3 cases in stage Ⅰ (8.3%), 12 cases in stage Ⅱ (33.3%), 19 cases in stage Ⅲ (52.8%), and 2 cases in stage Ⅳ (5.6%). Complete or partial loss of ARID1A expression was observed in 20 cases (55.6%); complete or partial loss of SMARCA2 expression was observed in 24 cases (66.7%). SMARCA4 exhibited complete loss of expression in 4 cases (11.1%). Eleven cases (30.6%) showed concurrent complete or partial losses of both ARID1A and SMARCA2 expression. Twelve cases (33.3%) had mismatch repair protein deficiency, all of which were characterized by MLH1/PMS2 absence. Mismatch repair protein deficiency was associated with loss of ARID1A expression (P<0.01). Patients with mismatch repair protein deficiency were also associated with earlier clinical stage and a lower risk of lymph node metastasis compared to the ones with intact mismatch repair proteins (P<0.05). Conclusions: SWI/SNF complex deficiency in gastrointestinal tumors is associated with dedifferentiation and often accompanied by mismatch repair protein deficiency. Compared to the cases with intact mismatch repair proteins, the cases with defective mismatch repair protein have an earlier clinical stage and a lower risk of lymph node metastasis.
Collapse
Affiliation(s)
- X L Zhao
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - L L Meng
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Q Y Zhang
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - X L Zhang
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - X X Guo
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - B Lyu
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Y Ji
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| |
Collapse
|
3
|
Liu R, Xuan M, Wang DC, Xiao O, Guo XX, Zhang J, Wang W, Jong M, Sankaridurg P, Ohno-Matsui K, Yin QX, He MG, Li ZX. Using choroidal thickness to detect myopic macular degeneration. Int J Ophthalmol 2024; 17:317-323. [PMID: 38371267 PMCID: PMC10827620 DOI: 10.18240/ijo.2024.02.14] [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: 07/08/2023] [Accepted: 12/20/2023] [Indexed: 02/20/2024] Open
Abstract
AIM To explore the usage of choroidal thickness measured by swept-source optical coherence tomography (SS-OCT) to detect myopic macular degeneration (MMD) in high myopic participants. METHODS Participants with bilateral high myopia (≤-6 diopters) were recruited from a subset of the Guangzhou Zhongshan Ophthalmic Center-Brien Holden Vision Institute High Myopia Cohort Study. SS-OCT was performed to determine the choroidal thickness, and myopic maculopathy was graded by the International Meta-Analysis for Pathologic Myopia (META-PM) Classification. Presence of MMD was defined as META-PM category 2 or above. RESULTS A total of 568 right eyes were included for analysis. Eyes with MMD (n=106, 18.7%) were found to have older age, longer axial lengths (AL), higher myopic spherical equivalents (SE), and reduced choroidal thickness in each Early Treatment Diabetic Retinopathy Study (ETDRS) grid sector (P<0.001). The area under the receiver operating characteristic (ROC) curves (AUC) for subfoveal choroidal thickness (0.907) was greater than that of the model, including age, AL, and SE at 0.6249, 0.8208, and 0.8205, respectively. The choroidal thickness of the inner and outer nasal sectors was the most accurate indicator of MMD (AUC of 0.928 and 0.923, respectively). An outer nasal sector choroidal thickness of less than 74 µm demonstrated the highest odds of predicting MMD (OR=33.8). CONCLUSION Choroidal thickness detects the presence of MMD with high agreement, particularly of the inner and outer nasal sectors of the posterior pole, which appears to be a biometric parameter more precise than age, AL, or SE.
Collapse
Affiliation(s)
- Ran Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, Guangdong Province, China
- New England College of Optometry, Boston, Massachusetts 02115, USA
| | - Meng Xuan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, Guangdong Province, China
| | - De-Cai Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, Guangdong Province, China
| | - Ou Xiao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, Guangdong Province, China
| | - Xin-Xing Guo
- Wilmer Eye Institute, Johns Hopkins University, Baltimore, MD 21231, USA
| | - Jian Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, Guangdong Province, China
| | - Wei Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, Guangdong Province, China
| | - Monica Jong
- Brien Holden Vision Institute, Sydney 2052, Australia
- School of Optometry and Vision Science, University of New South Wales, Sydney 2052, Australia
| | - Padmaja Sankaridurg
- Brien Holden Vision Institute, Sydney 2052, Australia
- School of Optometry and Vision Science, University of New South Wales, Sydney 2052, Australia
| | - Kyoko Ohno-Matsui
- Department of Ophthalmology and Visual Science, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Qiu-Xia Yin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, Guangdong Province, China
| | - Ming-Guang He
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, Guangdong Province, China
- School of Optometry, the Hong Kong Polytechnic University, Hong Kong SAR, China
- Research Centre for SHARP Vision, the Hong Kong Polytechnic University, Hong Kong SAR, China
- Center for Eye and Vision Research (CEVR), 17W Hong Kong Science Park, Hong Kong SAR, China
| | - Zhi-Xi Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, Guangdong Province, China
| |
Collapse
|
4
|
Yang JZ, Guo XX, Xu C, Hou YY, Yuan W. [Clinicopathological features of gastric alpha-fetoprotein-producing adenocarcinoma with SWI/SNF complex deletion]. Zhonghua Bing Li Xue Za Zhi 2024; 53:52-57. [PMID: 38178747 DOI: 10.3760/cma.j.cn112151-20231023-00284] [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] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Objective: To investigate the clinicopathological features and treatment of gastric alpha-fetoprotein (AFP)-producing adenocarcinoma with SWI/SNF complex deletion. Methods: Four cases of gastric AFP-producing adenocarcinoma with SWI/SNF complex deletion diagnosed in Zhongshan Hospital of Fudan University from January 2021 to December 2022 were collected, and their histomorphological characteristics, immunohistochemical (IHC), in situ hybridization of Epstein-Barr virus-encoded RNA (EBER), next-generation sequencing results, clinicopathological features and treatment were summarized, and literature review was conducted. Results: Among the 4 patients, there were three males and one female. They presented with abdominal pain, belching and melena. Serum AFP was significantly elevated in three patients, and endoscopy showed ulcerative lesions. Microscopically, the tumor cells showed mainly diffuse flaky or nest-like growth and typical characteristics of hepatoid adenocarcinoma. In two cases there were adenoid growth, and the tumor cells in these areas possessed clear cytoplasm, suggesting enteroblastic differentiation. The tumor cell nuclei were pleomorphic with large nucleoli and brisk mitoses. The IHC results showed that the tumor cells expressed AFP, GPC3 and SALL4, and there was retained expression of broad-spectrum keratin (CKpan) and E-cadherin. IHC detection of SWI/SNF complex subunits, namely INI1 (SMARCB1), BRG1 (SMARCA4), BRM (SMARCA2), ARID1A protein was performed. In all four cases the hepatoid adenocarcinoma region and enteroblastic differentiation region showed SMARCA2 deletion, and one case with enteroblastic differentiation also showed ARID1A deletion. SMARCB1 and SMARCA4 deletions were not seen. All the four cases were diffusely positive for p53 protein, and the Ki-67 proliferation index was 80%-90%. There were no mismatch repair deletion detected; one cases showed HER2 was strongly positive (3+), and EBER was negative. None of the four cases had mutations in the SWI/SNF complex-related subunits detected by next-generation sequencing. Among the four patients, two underwent palliative surgery due to distant metastasis at the time of surgery, two underwent radical resection. Postoperative adjuvant chemotherapy was given to three patients. Conclusions: AFP-producing adenocarcinoma is a rare subtype of gastric cancer, which can be combined with SWI/SNF complex deletion, and the pathomorphological manifestations are different from the classical SWI/SNF complex deletion of undifferentiated carcinoma with rhabdoid phenotype.
Collapse
Affiliation(s)
- J Z Yang
- Department of Pathology, Zhongshan Hospital (Xiamen Branch), Fudan University, Xiamen 361015, China
| | - X X Guo
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - C Xu
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Y Y Hou
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - W Yuan
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| |
Collapse
|
5
|
Wu XB, Wu YT, Guo XX, Xiang C, Chen PS, Qin W, Shi ZS. Circular RNA hsa_circ_0007990 as a blood biomarker for unruptured intracranial aneurysm with aneurysm wall enhancement. Front Immunol 2022; 13:1061592. [PMID: 36466848 PMCID: PMC9714537 DOI: 10.3389/fimmu.2022.1061592] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 10/04/2022] [Accepted: 11/04/2022] [Indexed: 10/17/2023] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) may involve the formation and rupture of intracranial aneurysms (IA). Inflammation plays a vital role in the development and progression of IA, which can be reflected by aneurysm wall enhancement (AWE) on high-resolution vessel wall magnetic resonance imaging (HR-VWI). This study aims to evaluate the role of circRNAs as the blood inflammatory biomarker for unruptured IA (UIA) patients with AWE on HR-VWI. METHODS We analyzed the circRNA expression profiles in the peripheral blood samples among subjects from saccular UIA with AWE, UIA without AWE, and healthy controls by the circRNA microarray. The differential expression of hsa_circ_0007990 was assessed. We constructed the hsa_circ_0007990-microRNA-mRNA network and the regulatory axis of hub genes associated with the AWE in UIA. RESULTS Eighteen patients harboring saccular UIAs with HR VWI and five healthy controls were included. We found 412 differentially expressed circRNAs between UIA patients and healthy controls by circRNA microarray. Two hundred thirty-one circRNAs were significantly differentially expressed in UIA patients with AWE compared with those without AWE. Twelve upregulated circRNAs were associated with AWE of UIA, including hsa_circ_0007990, hsa_circ_0114507, hsa_circ_0020460, hsa_circ_0053944, hsa_circ_0000758, hsa_circ_0000034, hsa_circ_0009127, hsa_circ_0052793, hsa_circ_0000301 and hsa_circ_0000729. The expression of hsa_circ_0007990 was increased gradually in the healthy control, UIA without AWE, and UIA with AWE confirmed by RT-PCR (P<0.001). We predicted 4 RNA binding proteins (Ago2, DGCR8, EIF4A3, PTB) and period circadian regulator 1 as an encoding protein with hsa_circ_0007990. The hsa_circ_0007990-microRNA-mRNA network containing five microRNAs (miR-4717-5p, miR-1275, miR-150-3p, miR-18a-5p, miR-18b-5p), and 97 mRNAs was constructed. The five hub genes (hypoxia-inducible factor 1 subunit alpha, estrogen receptor 1, forkhead box O1, insulin-like growth factor 1, CREB binding protein) were involved in the inflammatory response. CONCLUSION Differentially expressed blood circRNAs associated with AWE on HR-VWI may be the novel inflammatory biomarkers for assessing UIA patients. The mechanism of hsa_circRNA_0007990 for UIA progression needs to investigate further.
Collapse
Affiliation(s)
- Xiao-Bing Wu
- Department of Neurosurgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- RNA Biomedical Institute, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - You-Tao Wu
- Department of Neurosurgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- RNA Biomedical Institute, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xin-Xing Guo
- Department of Neurosurgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- RNA Biomedical Institute, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Chun Xiang
- Department of Neurosurgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Pei-Sheng Chen
- Department of Neurosurgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wang Qin
- Department of Neurosurgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- RNA Biomedical Institute, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhong-Song Shi
- Department of Neurosurgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- RNA Biomedical Institute, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Province Key Laboratory of Brain Function and Disease, Sun Yat-sen University, Guangzhou, China
| |
Collapse
|
6
|
Liu FY, Zhang Q, Guo XX, Song X, Zhang CX. [Study on the mechanism of resistance to cypermethrin in Culex pipiens pallens using proteomics]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021; 33:189-194. [PMID: 34008367 DOI: 10.16250/j.32.1374.2020347] [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: 11/27/2022]
Abstract
OBJECTIVE To compare the differentially expressed proteins between cypermethrin-resistant and -sensitive Culex pipiens pallens, so as to unravel the mechanism underlying the resistance to cypermethrin in Cx. p. pallens. METHODS A quantitative proteomic analysis was performed among cypermethrin-sensitive and -resistant isolates of Cx. p. pallens using isobaric tags for relative and absolute quantification (iTRAQ) labeling coupled with liquid chromatography with tandem mass spectrometry (LC-MS/MS). RESULTS A total of 164 differentially expressed proteins were identified between cypermethrin-sensitive and -resistant isolates of Cx. p. pallens, including 54 up-regulated proteins and 110 down-regulated proteins. A large number of cuticular proteins, larval cuticular proteins, pupal cuticular proteins and cuticular structural constituent proteins, which are associated with cytoskeletal structure and components, were differentially expressed between cypermethrin-sensitive and -resistant isolates of Cx. p. pallens. Thirteen proteins, which were involved in energy production and conversion, translation, ribosomal structure and biogenesis, lipid transport and metabolism, post-translational modification, protein turnover, chaperones, cytoskeleton and intracellular transportation, were validated to be differentially expressed between cypermethrin-sensitive and -resistant isolates of Cx. p. pallens, which may serve as potential markers of cypermethrin resistance. CONCLUSIONS Multiple insecticide resistance mechanisms contribute to the resistance to cypermethrin in Cx. p. pallens, including cuticular resistance and metabolic resistance, and the cuticular protein genes and cytochrome P450 enzymes may play an important role in the resistance of Cx. p. pallens to cypermethrin.
Collapse
Affiliation(s)
- F Y Liu
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272000, China.,Clinical Laboratory, Affiliated Hosptial of Jining Medical University, China
| | - Q Zhang
- Jining Municipal Hospital of Traditional Chinese Medicine, Shandong Province, China
| | - X X Guo
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272000, China
| | - X Song
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272000, China
| | - C X Zhang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272000, China
| |
Collapse
|
7
|
Wang Q, Long ZB, Qian M, Feng J, Guo XX, Yang AM, You Y, Fei GJ. [The 486th case: chronic diarrhea and orthostatic hypotension]. Zhonghua Nei Ke Za Zhi 2021; 60:284-288. [PMID: 33663184 DOI: 10.3760/cma.j.cn112138-20200318-00260] [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
A 57-year-old man was admitted to hospital with diarrhea for 10 months and dizziness for 4 months. The patient had 1-2 liters watery stool per day, without pyogenic blood or abnormality in gastroenteroscopy examination. The level of hemoglobin and albumin was generally normal, and fasting test was positive. At the same time, he was accompanied with hyperalgesia of lower limbs and orthostatic hypotension. After the discussion of multiple disciplinary teams, the patient was diagnosed with amyloidosis by sural nerve biopsy, myocardial MRI, and the assays of urine immunoelectrophoresis and serum free light chain. Light chain amyloidosis was confirmed after excluded the diagnosis of familial amyloidosis. The patient was improved after courses of chemotherapy with melphalan and dexamethasone.
Collapse
Affiliation(s)
- Q Wang
- Department of Gastroenterology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Z B Long
- Department of Hematology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - M Qian
- Department of Neurology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - J Feng
- Department of Hematology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - X X Guo
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - A M Yang
- Department of Gastroenterology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Y You
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - G J Fei
- Department of Gastroenterology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| |
Collapse
|
8
|
Deng JZ, Zhang ZL, Lin YB, Guo XX, Li CY, Chen HX. [Analysis on short-term efficacy of reduced-port laparoscopic anterior resection for mid-low rectal cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 23:1200-1203. [PMID: 33353277 DOI: 10.3760/cma.j.cn.441530-20191226-00525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
9
|
Abstract
Objective This study investigated the inhibitory effect of baicalin on orthodontically
induced inflammatory root resorption in rats. Methods Forty-five male Wistar rats were randomly divided into three groups of 15
rats each. Fifty grams of force was used to establish an orthodontic tooth
movement model. Baicalin (40 mg/kg) was locally injected into rats in the
baicalin group at 3-day intervals; concurrently, normal saline was injected
into rats in the negative control group. On the 21st day after orthodontic
treatment, the tooth movement distance and root resorption area ratio were
measured. Histomorphology changes were observed by hematoxylin and eosin
staining and immunohistochemistry. Results There was no significant difference in tooth movement distance between
groups. The root resorption area ratio was significantly lower in the
baicalin group than in the negative control group. Runx-2 expression was
significantly higher in the baicalin group than in the negative control
group, while tumor necrosis factor (TNF)-α expression was significantly
lower in the baicalin group than in the negative control group. Conclusions Baicalin inhibits orthodontically induced inflammatory root resorption by
enhancing the expression of Runx-2 and reducing the expression of TNF-α, but
does not affect tooth movement distance.
Collapse
Affiliation(s)
- Peng Lin
- Department of Orthodontics, Jinan Stomatological Hospital, Jinan, P.R. China
| | - Xin-Xing Guo
- Department of Orthodontics, Jinan Stomatological Hospital, Jinan, P.R. China
| | - Yi-Ling Wang
- Department of Orthodontics, Jinan Stomatological Hospital, Jinan, P.R. China
| | - Zhu-Liang Wei
- Department of Orthodontics, Jinan Stomatological Hospital, Jinan, P.R. China
| | - Hai-Yan Xin
- Department of Orthodontics, Jinan Stomatological Hospital, Jinan, P.R. China
| | - Tong-Bin Liu
- Department of Prosthodontics, Binzhou Medical University Hospital, Binzhou, P.R. China
| |
Collapse
|
10
|
Lian XX, Sun YP, Guo XX. [Correlation between intestinal mucosal permeability and prognosis in patients with liver cirrhosis]. Zhonghua Gan Zang Bing Za Zhi 2020; 28:58-63. [PMID: 32023701 DOI: 10.3760/cma.j.issn.1007-3418.2020.01.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Objective: To investigate the correlation between changes in intestinal mucosal permeability and prognosis of patients with liver cirrhosis. Methods: Data of 89 cases with liver cirrhosis who were hospitalized in the Hepatology Department of Shanxi Provincial Hospital of Traditional Chinese Medicine from January 2017 to August 2017 were collected as the liver cirrhosis experimental group, and 40 healthy subjects were randomly selected as the healthy control group. JY-DLT, the Intestinal Mucosal Barrier Biochemical Index Analysis System was used to measure the levels of serum diamine oxidase (DAO), D-lactic acid, and endotoxin (ETX) in two groups to evaluate intestinal mucosal barrier function. Spearman's rank correlation test was used to evaluate the correlation between liver cirrhosis prognosis and intestinal mucosal permeability. The results of the two groups were compared by Mann-Whitney H test of two independent samples. One-way Anova was used for intergroup comparison. The pairwise comparison between groups was performed using the LSD or SNK test. Results: The level of ETX in patients with decompensated cirrhosis was significantly higher than that in the compensated phase, and the difference was statistically significant (P < 0.05). The levels of DAO, D-lactic acid and ETX in the liver cirrhosis group were significantly higher than those in the healthy control group, and the differences were statistically significant (P < 0.01). The plasma levels of DAO, D-lactic acid and ETX in the Child-Pugh grade groups of patients with liver cirrhosis were significantly higher than those in the healthy control group, and the differences were statistically significant (P < 0.05). The results of intergroup comparison showed that there were statistically significant differences in DAO, D-lactic acid and ETX levels between Child-Pugh grade A and grade B groups (t = -4.255, 2.527, -2.179, P < 0.05). Furthermore, there were statistically significant differences in the levels of D-lactic acid and ETX between the Child-Pugh grade A and grade C groups (t = -2.693, -4.248, P < 0.01).The plasma levels of DAO, D-lactic acid and ETX levels were positively correlated (r = 0.205, 0.372, 0.342, P < 0.01). D-lactic acid and ETX levels were positively correlated with CTP score, Forns' index, RPR index, APRI score, FIB-4 index and FibroScan score(P < 0.01). Conclusion: The three indices (plasma DAO, D-lactic acid, and ETX) can accurately detect the changes in intestinal mucosal permeability. Moreover, the higher index of intestinal mucosal permeability causes the more severe degree of liver cirrhosis and the correlation between the intestinal mucosal permeability and the prognosis score of liver cirrhosis provides a reference for a new evaluation system and new ideas for the treatment of liver cirrhosis.
Collapse
Affiliation(s)
- X X Lian
- Shanxi University of Traditional Chinese Medicine, Taiyuan 030024, China
| | - Y P Sun
- Institute of Chinese Medicine in Shanxi Province, Taiyuan 030012, China
| | - X X Guo
- Shanxi Hospital of Traditional Chinese Medicine, Taiyuan 030012, China
| |
Collapse
|
11
|
Xu XY, Lai KB, Xiao H, Lin YQ, Guo XX, Liu X. Comparisons of ganglion cell-inner plexiform layer loss patterns and its diagnostic performance between normal tension glaucoma and primary open angle glaucoma: a detailed, severity-based study. Int J Ophthalmol 2020; 13:71-78. [PMID: 31956573 DOI: 10.18240/ijo.2020.01.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 09/24/2019] [Indexed: 11/23/2022] Open
Abstract
AIM To evaluate the patterns of macular ganglion cell-inner plexiform layer (GCIPL) loss in normal tension glaucoma (NTG) and primary open angle glaucoma (POAG) in a detailed, disease severity-matched way; and to assess the diagnostic capabilities of GCIPL thickness parameters in discriminating NTG or POAG from normal subjects. METHODS A total of 157 eyes of 157 subjects, including 57 normal eyes, 51 eyes with POAG and 49 eyes with NTG were enrolled and strictly matched in age, refraction, and disease severity between POAG and NTG groups. The average, minimum, superotemporal, superior, superonasal, inferonasal, inferior, and inferotemporal GCIPL thickness, and the average, superior, temporal, inferior, and nasal retinal nerve fiber layer (RNFL) thickness were obtained by Cirrus optical coherence tomography (OCT). The diagnostic capabilities of OCT parameters were assessed by area under receiver operating characteristic (AUROC) curves. RESULTS Among all the OCT thickness parameters, no statistical significant difference between NTG group and POAG group was found (all P>0.05). In discriminating NTG or POAG from normal subjects, the average and inferior RNFL thickness, and the minimum GCIPL thickness had better diagnostic capabilities. There was no significant difference in AUROC curve between the best GCIPL thickness parameter (minimum GCIPL) and the best RNFL thickness parameter in discriminating NTG (inferior RNFL; P=0.076) and indiscriminating POAG (average RNFL; P=0.913) from normal eyes. CONCLUSION Localized GCIPL loss, especially in the inferior and inferotemporal sectors, is more common in NTG than in POAG. Among all the GCIPL thickness parameters, the minimum GCIPL thickness has the best diagnostic performance in differentiating NTG or POAG from normal subjects, which is comparable to that of the average and inferior RNFL thickness.
Collapse
Affiliation(s)
- Xiao-Yu Xu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Kun-Bei Lai
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Hui Xiao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Yi-Quan Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Xin-Xing Guo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Xing Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| |
Collapse
|
12
|
Deng JZ, Zhang ZL, Lin YB, Guo XX, Li ZY, Yu S, Zhu JC. [Exploring single-port laparoscopic anterior resection for sigmoid colon and rectal cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2019; 22:786-788. [PMID: 31422619 DOI: 10.3760/cma.j.issn.1671-0274.2019.08.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
13
|
Zhang BG, Li YP, Ma R, Cheng P, Guo XX, Wang HF, Liu LJ. [Effects of low temperature on trehalose and trehalase contents in Culex pipiens pallens]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2019; 31:510-512. [PMID: 31713380 DOI: 10.16250/j.32.1374.2018131] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To examine the effect of low temperature on trehalose and trehalase levels in Culex pipiens pallens. METHODS The fourth instar larvae and female adult mosquitoes of Cx. pipiens pallens were exposed at 4 ℃ for 0, 1, 3, 6, 12, 18, 24 h and 0, 1, 3, 6, 12, 18, 24, 36, 48, 72 h, respectively. Then, the trehalose and trehalase contents were detected by enzyme-linked immunosorbent assay (ELISA) in mosquitoes. RESULTS The contents of trehalose and trehalase significantly increased in the larval and female adult mosquitoes post-exposure to low temperature. The changing trend of trehalose levels was consistent in the larval and female adult mosquitoes, and the highest levels were (2.458 8 ± 0.379 2) mg/g and (2.825 7 ± 0.211 1) mg/g 3 h post-exposure to low temperature, respectively. The trehalose and trehalase levels fluctuated greatly within the first 6 h post-exposure to low temperature. Following adaptation for a period of time, the trehalose and trehalase levels remained at a relatively high level. CONCLUSIONS Low temperature may induce the production of trehalose and trehalase in Cx. pipiens pallens, and the trehalose and trehalase may play an important role in the improvement of the cold resistance.
Collapse
Affiliation(s)
- B G Zhang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
| | - Y P Li
- Jinxiang County Bureau of Agriculture, Shandong Province, China
| | - R Ma
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
- Jining No. 1 People's Hospital, Shandong Province, China
| | - P Cheng
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
| | - X X Guo
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
| | - H F Wang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
| | - L J Liu
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
| |
Collapse
|
14
|
Song X, Cheng P, Wang HF, Guo XX, Lü YY, Liu HM, Liu LJ, Zhang CX, Zhao YQ, Kou JX, Wang HW, Gong MQ. [Study on insecticide resistance of Culex pipiens pallens in southwest region of Shandong Province]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2019; 32:69-72. [PMID: 32185930 DOI: 10.16250/j.32.1374.2018261] [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: 06/10/2023]
Abstract
OBJECTIVE To explore the sensitivity of Culex pipiens pallens to common chemical insecticides in the southwestern region of Shandong Province, so as to provide a theoretical basis for the development of reasonable and effective mosquito control measures. METHODS The resistance of Cx. pipiens pallens larvae to 5 chemical insecticides, such as cypermethrin, deltamethrin, DDVP, propoxur, and acetofenate were tested by using the WHO biological test method in 2018, and the co-toxicity coefficients after compounding the above-mentioned insecticides were tested by using a drug compounding method. RESULTS The resistance indexes of Cx. pipiens pallens to cypermethrin, deltamethrin, DDVP, propoxur, and acetofenate in 3 cities were 144.43-557.54, 118.17-445.33, 6.44-19.00, 2.37-8.10, and 0.88-2.98, respectively, and expect the difference between the DDVP resistances of Cx. pipiens pallens in Jining City and Heze City was not statistically significant (P > 0.05), all the other differences were statistically significant (all P < 0.05). The synergistic coefficients of cypermethrin + DDVP, cypermethrin + propoxur, DDVP + acetofenate, and propoxur + acetofenate were 199.58 - 456.95, 190.56 - 292.37, 123.32 - 319.24, and 192.31 - 367.32, respectively. The lower synergism was observed by using the mixture of DDVP + propoxur (synergistic coefficient: 99.87-108.36) . CONCLUSIONS After decades of chemical control, Cx. pipiens pallens in the southwestern region of Shandong Province has produced different degrees of resistance to common chemical insecticides. Therefore, comprehensive control measures should be taken to control mosquito breeding and prevent the development of insecticide resistance.
Collapse
Affiliation(s)
- X Song
- Shandong Academy of Medical Sciences, Shandong Institute of Parasitic Diseases, Jining 272033, China
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, China
| | - P Cheng
- Shandong Academy of Medical Sciences, Shandong Institute of Parasitic Diseases, Jining 272033, China
| | - H F Wang
- Shandong Academy of Medical Sciences, Shandong Institute of Parasitic Diseases, Jining 272033, China
| | - X X Guo
- Shandong Academy of Medical Sciences, Shandong Institute of Parasitic Diseases, Jining 272033, China
| | - Y Y Lü
- Shandong Academy of Medical Sciences, Shandong Institute of Parasitic Diseases, Jining 272033, China
| | - H M Liu
- Shandong Academy of Medical Sciences, Shandong Institute of Parasitic Diseases, Jining 272033, China
| | - L J Liu
- Shandong Academy of Medical Sciences, Shandong Institute of Parasitic Diseases, Jining 272033, China
| | - C X Zhang
- Shandong Academy of Medical Sciences, Shandong Institute of Parasitic Diseases, Jining 272033, China
| | - Y Q Zhao
- Shandong Academy of Medical Sciences, Shandong Institute of Parasitic Diseases, Jining 272033, China
| | - J X Kou
- Shandong Academy of Medical Sciences, Shandong Institute of Parasitic Diseases, Jining 272033, China
| | - H W Wang
- Shandong Academy of Medical Sciences, Shandong Institute of Parasitic Diseases, Jining 272033, China
| | - M Q Gong
- Shandong Academy of Medical Sciences, Shandong Institute of Parasitic Diseases, Jining 272033, China
| |
Collapse
|
15
|
Liu BF, Liu J, Han C, Guo XX, Zeng Q. [Evaluation uncertainty of power frequency electric field for a Power Project in inner Mongolia]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 36:704-706. [PMID: 30419684 DOI: 10.3760/cma.j.issn.1001-9391.2018.09.021] [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: With the measurement and uncertainty analysis of the power frequency electric field of the main transformer in the power station, the source of uncertainty, its quantitative calculation, the synthetic assessment method and the reporting method of the measurement results are described to ensure the reliability of the power frequency electric field measurement data. Methods: Referring to the "Measurement of power frequency electric field in the workplace" (GBZ/T189.3-2007) , "Labour environment monitoring technological specification of electric power industry Partt7: Monitoring of power frequency electromagnetic fields" (DL/T 799.7-2010) and "Evaluation and Expression of Uncertainty in Measurement" (JJF 1059.1-2012) , the uncertainty of power frequency electric field measurement data of the main transformer of a power plant was analyzed and the extended uncertainty was obtained. Results: The main source of the uncertainty of power frequency electric field measurement was the measurement of repetitive operation, and the expanded uncertainty of power frequency electric field was 0.09 kV/m. Conclusion: When reporting the results of power frequency electric field measurement, the measurement uncertainty should be used simultaneously to quantify the quality of the measurement results. This method has strong practicability and operability, which can meet the requirements of uncertainty evaluation of power frequency electric field measurement results.
Collapse
Affiliation(s)
- B F Liu
- Institute of Occupational Disease Prevention and Control, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
| | | | | | | | | |
Collapse
|
16
|
Hu ZD, Yan J, Cai WJ, Zhang D, Guo XX, Yin ZQ, Zhang MF. [One case report of pleomorphic liposarcoma of larynx]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 52:781-782. [PMID: 29050100 DOI: 10.3760/cma.j.issn.1673-0860.2017.10.015] [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)
- Z D Hu
- Department of Pathology, Tinjin First Center Hospital, Tianjin 300192, China
| | - J Yan
- Department of Pathology, Tinjin First Center Hospital, Tianjin 300192, China
| | - W J Cai
- Department of Pathology, Tinjin First Center Hospital, Tianjin 300192, China
| | - D Zhang
- Department of Otorhinolaryngology Head and Neck Surgery
| | - X X Guo
- Department of Pathology, Tinjin First Center Hospital, Tianjin 300192, China
| | - Z Q Yin
- Department of Pathology, Tinjin First Center Hospital, Tianjin 300192, China
| | - M F Zhang
- Department of Pathology, Tinjin First Center Hospital, Tianjin 300192, China
| |
Collapse
|
17
|
Guo XX, Ma Y, Dou ZH, Wu YS, Zhao DC, Cai WP, Li Y, Dong XX. [CD(4+) T lymphocyte responses to anti-retroviral therapy, among HIV/AIDS patients aged 18 and over]. Zhonghua Liu Xing Bing Xue Za Zhi 2017. [PMID: 28647974 DOI: 10.3760/cma.j.issn.0254-6450.2017.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the differences of CD(4) (+) T lymphocyte (CD(4)) counts between patients aged 18 and over, to explore the effect of age on treatment, 36 months after having received the China National Free AIDS Antiretroviral Treatment on HIV/AIDS. Methods: Through the National ART Information Ssystem, we selected those HIV/AIDS patients who initiated the ART 36 months after the ART, between January 1, 2010 and December 31, 2012 in Guangzhou, Liuzhou and Kunming. Patients were divided into age groups as 18-49, 50-59 and 60 or over year olds, at the baseline of treatment. Under different levels of baseline CD(4) counts, we chose the baseline and different time-point of CD(4) counts as dependent variables, applied mixed linear model to analyze the effects of age, viral suppression, gender, baseline CD(4)/CD(8) ratio and initial treatment regimen. Results: A total of 5 331 HIV/AIDS patients were recruited. No differences were found on age group ratios between different levels of baseline CD(4) counts. At the level of baseline CD(4)<200 cells/μl, both the 50-59 and 60 or above years old groups had lower CD(4) counts than the 18-49 year-old group, within 36 months after the initiation of ART. However, at the baseline CD(4) level of 200-350 cells/μl, no significant differences on CD(4) counts between the 50-59 year-old and 18-49 year-old groups were noticed. CD(4) counts seemed lower in the 60 and above year-old group than in the 18-49 year-old group. Conclusion: Age might serve as an influencing factor on CD(4) counts within 36 months after the initiation of ART, suggesting that earlier initiation of ART might be of help to the recovery of immune function in the 50-59 year-old group.
Collapse
Affiliation(s)
- X X Guo
- Division of Treatment and Care, National Center for AIDS/STD Control and Prevention, China Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Ma
- Division of Treatment and Care, National Center for AIDS/STD Control and Prevention, China Center for Disease Control and Prevention, Beijing 102206, China
| | - Z H Dou
- Division of Treatment and Care, National Center for AIDS/STD Control and Prevention, China Center for Disease Control and Prevention, Beijing 102206, China
| | - Y S Wu
- Division of Treatment and Care, National Center for AIDS/STD Control and Prevention, China Center for Disease Control and Prevention, Beijing 102206, China
| | - D C Zhao
- Division of Treatment and Care, National Center for AIDS/STD Control and Prevention, China Center for Disease Control and Prevention, Beijing 102206, China
| | - W P Cai
- Department of Infectious Diseases, Guangzhou Eighth People's Hospital, Guangzhou 510060, China
| | - Y Li
- The Guangxi Longtan Hospital, Liuzhou 545005, China
| | - X X Dong
- Yunnan AIDS Care Center, Kunming 650000, China
| |
Collapse
|
18
|
Cheng L, Long B, Guo XX, Li LX, Xu Y, Hao LL, Zheng DY, Cheng B, Liu X. Increased aquaporin-1 levels in lens epithelial cells with primary angle-closure glaucoma. Int J Ophthalmol 2017; 10:1101-1105. [PMID: 28730113 DOI: 10.18240/ijo.2017.07.13] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 03/09/2017] [Indexed: 11/23/2022] Open
Abstract
AIM To determine the levels of aquaporin-1 (AQP-1) in the lens epithelial cells (LECs) of primary glaucoma and to clarify its correlation with lens thickness. METHODS This study comprised 64 eyes of 64 patients with primary glaucoma, who were divided into 3 groups: 25 eyes of 25 patients with acute primary angle-closure glaucoma (APACG), 19 eyes of 19 patients with chronic primary angle-closure glaucoma (CPACG) and 20 eyes of 20 patients with primary open angle glaucoma (POAG). This study also included 12 eyes of 12 patients with senile cataract as controls. The levels of AQP-1 in LECs were examined by real-time quantitative polymerase chain reaction (RT-qPCR) and immunohistochemistry. The lens thickness was measured by A-scan ultrasonography. RESULTS The AQP-1 mRNA levels of LECs were 0.84±0.27, 0.69±0.34, 0.44±0.19 and 0.51±0.21 in APACG, CPACG, POAG and senile cataract group, respectively. The levels of AQP-1m RNA were significantly higher in PACG groups compared with those in senile cataract and POAG group (all P<0.05). The immunohistochemistry showed the AQP-1 expression were strong-positive in PACG groups, but weak-positive in senile cataract and POAG group. A positive correlation was found between AQP-1 mRNA levels and the lens thickness (r=0.645, P<0.001). CONCLUSION These findings show that the higher expression of AQP-1 in LECs may contribute to increased lens thickness, which might be associated with the occurrence and development of PACG.
Collapse
Affiliation(s)
- Lei Cheng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China.,Department of Ophthalmology, Shenzhen People's Hospital, Jinan University, Shenzhen 518020, Guangdong Province, China
| | - Bing Long
- Department of Hematology, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
| | - Xin-Xing Guo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Li-Xin Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Yue Xu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Lin-Lin Hao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Dan-Ying Zheng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Bing Cheng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| | - Xing Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, Guangdong Province, China
| |
Collapse
|
19
|
Huang JL, Huang JJ, Zhong YM, Guo XX, Chen XX, Xu XY, Liu X. Surgical Outcomes of Trabeculotomy in Newborns with Primary Congenital Glaucoma. Chin Med J (Engl) 2017; 129:2178-83. [PMID: 27625089 PMCID: PMC5022338 DOI: 10.4103/0366-6999.189925] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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] [Indexed: 11/25/2022] Open
Abstract
Background: Early surgical intervention is required for the primary congenital glaucoma (PCG). There are currently few reports on the surgical outcomes in infants with PCG. This study aimed to evaluate the efficacy and safety of trabeculotomy and the postoperative visual outcomes in Chinese newborns with PCG within 4 weeks of birth. Methods: A total of 21 eyes of 12 patients with PCG who underwent primary trabeculotomy within 4 weeks of birth were retrospectively studied. Preoperative and postoperative intraocular pressure (IOP), corneal clarity and diameter, axial length and optic disc cupping, visual acuity and postoperative refractive error, success rates, and complications were evaluated. Kaplan-Meier survival analysis was applied to evaluate the success rates. Results: The mean follow-up time was 46.9 ± 34.4 months (range: 12–122 months). The postoperative IOP was significantly lower than the preoperative IOP at all of the follow-up visits (P < 0.001). The complete success rates for all eyes at 1, 2, 3, and 5 years postoperatively were 90.5%, 85.7%, 85.7%, and 85.7%, respectively. The IOPs of the three patients who needed antiglaucomatous medications postoperatively were also well controlled. At the last visit, the cornea became clear, and the cup-to-disc ratio decreased significantly (P = 0.01) although the horizontal corneal diameter did not change significantly (P = 0.11). Visual acuities were able to be recorded in eight eyes at the last visit, among which six eyes had a best-corrected visual acuity of 20/40 or better. There were no severe intraoperative or postoperative complications. Conclusions: Trabeculotomy proves to be a safe and effective treatment in reducing IOP in this group of Chinese newborns with PCG. The outcomes of vision function were satisfactory in most of the patients.
Collapse
Affiliation(s)
- Jie-Lei Huang
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-sen University, Guangzhou, Guangdong 510060, China
| | - Jing-Jing Huang
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-sen University, Guangzhou, Guangdong 510060, China
| | - Yi-Min Zhong
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-sen University, Guangzhou, Guangdong 510060, China
| | - Xin-Xing Guo
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-sen University, Guangzhou, Guangdong 510060, China
| | - Xiang-Xi Chen
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-sen University, Guangzhou, Guangdong 510060, China
| | - Xiao-Yu Xu
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-sen University, Guangzhou, Guangdong 510060, China
| | - Xing Liu
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, Sun Yat-sen University, Guangzhou, Guangdong 510060, China
| |
Collapse
|
20
|
Zhang J, Wang CC, Wang P, Guo XX, Gao SJ. Silver-based coordination complexes of carboxylate ligands: crystal structures, luminescence and photocatalytic properties. TRANSIT METAL CHEM 2016. [DOI: 10.1007/s11243-016-0063-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
21
|
Liu X, Yu FF, Zhong YM, Guo XX, Mao Z. Therapeutic Effects of Sodium Hyaluronate on Ocular Surface Damage Induced by Benzalkonium Chloride Preserved Anti-glaucoma Medications. Chin Med J (Engl) 2016; 128:2444-9. [PMID: 26365960 PMCID: PMC4725570 DOI: 10.4103/0366-6999.164927] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [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] [Indexed: 11/15/2022] Open
Abstract
Background: Long-term use of benzalkonium chloride (BAC)-preserved drugs is often associated with ocular surface toxicity. Ocular surface symptoms had a substantial impact on the glaucoma patients’ quality of life and compliance. This study aimed to investigate the effects of sodium hyaluronate (SH) on ocular surface toxicity induced by BAC-preserved anti-glaucoma medications treatment. Methods: Fifty-eight patients (101 eyes), who received topical BAC-preserved anti-glaucoma medications treatment and met the severe dry eye criteria, were included in the analysis. All patients were maintained the original topical anti-glaucoma treatment. In the SH-treated group (56 eyes), unpreserved 0.3% SH eye drops were administered with 3 times daily for 90 days. In the control group (55 eyes), phosphate-buffered saline were administered with 3 times daily for 90 days. Ocular Surface Disease Index (OSDI) questionnaire, break-up time (BUT) test, corneal fluorescein staining, corneal and conjunctival rose Bengal staining, Schirmer test, and conjunctiva impression cytology were performed sequentially on days 0 and 91. Results: Compared with the control group, SH-treated group showed decrease in OSDI scores (Kruskal-Wallis test: H = 38.668, P < 0.001), fluorescein and rose Bengal scores (Wilcoxon signed-ranks test: z = −3.843, P < 0.001, and z = −3.508, P < 0.001, respectively), increase in tear film BUT (t-test: t = −10.994, P < 0.001) and aqueous tear production (t-test: t = −10.328, P < 0.001) on day 91. The goblet cell density was increased (t-test: t = −9.981, P < 0.001), and the morphology of the conjunctival epithelium were also improved after SH treatment. Conclusions: SH significantly improved both symptoms and signs of ocular surface damage in patients with BAC-preserved anti-glaucoma medications treatment. SH could be proposed as a new attempt to reduce ocular surface toxicity, and alleviate symptoms of ocular surface damage in BAC-preserved anti-glaucoma medications treatment.
Collapse
Affiliation(s)
- Xing Liu
- Department of Glaucoma, The State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, China
| | | | | | | | | |
Collapse
|
22
|
Wang CC, Gao F, Guo XX, Jing HP, Wang P, Gao SJ. Hydrothermal syntheses and photocatalytic performance of three Mn-based coordination complexes constructed from 1,10-phenanthroline and polycarboxylic acids. TRANSIT METAL CHEM 2016. [DOI: 10.1007/s11243-016-0033-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
23
|
Zhang YQ, Wang CC, Guo XX, Wang P, Gao SJ. Two 1D coordination polymers constructed from 3,3′,4,4′-biphenyltetracarboxylic acid and 4,4′-bipyridine: hydrothermal syntheses and photocatalytic performance. TRANSIT METAL CHEM 2015. [DOI: 10.1007/s11243-015-9992-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
24
|
Wang CC, Xu DX, Jing HP, Guo XX, Wang P, Gao SJ. Two Zinc Based Coordination Compounds Constructed from Two Azophenyl Ligands: Syntheses, Crystal Structure, and Photocatalytic Performance. J Inorg Organomet Polym Mater 2015. [DOI: 10.1007/s10904-015-0287-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
25
|
Guo XX, Brimblecombe P. Henry's law constants of phenol and mononitrophenols in water and aqueous sulfuric acid. Chemosphere 2007; 68:436-44. [PMID: 17343895 DOI: 10.1016/j.chemosphere.2007.01.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2006] [Revised: 12/31/2006] [Accepted: 01/02/2007] [Indexed: 05/14/2023]
Abstract
Phenols are widely present in the atmosphere and nitration probably in the aerosol phase leads to nitrophenols. Nitration by nitric acid in sulfuric acid can be rapid, but little is known of the process under atmospheric conditions. The Henry's law constants K(H)(dagger) of phenol and 2-, 3- and 4-nitrophenol were all measured by a bubble stripping method as: 2820mol kg(-1) atm(-1) (at 298K), 147mol kg(-1) atm(-1) (at 298K), 1.6x10(4)mol kg(-1)atm(-1) (at 308K) and 2.1x10(4)mol kg(-1) atm(-1) (at 308K), respectively. The Henry's law constant of phenol in sulfuric acid systems is lower by more than a factor of two at 1020mol kg(-1) atm(-1) (at 298K) in 40wt% sulfuric acid, which is in line with salting-out of oxygen-containing aromatic compounds in water-sulfuric acid systems. The Henry's law constants of 2- and 4-nitrophenol behave differently and are almost independent of sulfuric acid concentration. The variation of K(H)(dagger) with temperature (T) described in terms of -dln(K(H)(dagger))/d(1/T) does not to vary with sulfuric acid concentration, suggesting enthalpy of dissolution for phenol is independent of sulfuric acid. The series of Henry's law constants measured here can describe the equilibrium situation for phenols in careful determinations of phase partitioning in the atmosphere.
Collapse
Affiliation(s)
- X X Guo
- School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK.
| | | |
Collapse
|
26
|
Arad M, Moskowitz IP, Patel VV, Ahmad F, Perez-Atayde AR, Sawyer DB, Walter M, Li GH, Burgon PG, Maguire CT, Stapleton D, Schmitt JP, Guo XX, Pizard A, Kupershmidt S, Roden DM, Berul CI, Seidman CE, Seidman JG. Transgenic mice overexpressing mutant PRKAG2 define the cause of Wolff-Parkinson-White syndrome in glycogen storage cardiomyopathy. Circulation 2003; 107:2850-6. [PMID: 12782567 DOI: 10.1161/01.cir.0000075270.13497.2b] [Citation(s) in RCA: 222] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Mutations in the gamma2 subunit (PRKAG2) of AMP-activated protein kinase produce an unusual human cardiomyopathy characterized by ventricular hypertrophy and electrophysiological abnormalities: Wolff-Parkinson-White syndrome (WPW) and progressive degenerative conduction system disease. Pathological examinations of affected human hearts reveal vacuoles containing amylopectin, a glycogen-related substance. METHODS AND RESULTS To elucidate the mechanism by which PRKAG2 mutations produce hypertrophy with electrophysiological abnormalities, we constructed transgenic mice overexpressing the PRKAG2 cDNA with or without a missense N488I human mutation. Transgenic mutant mice showed elevated AMP-activated protein kinase activity, accumulated large amounts of cardiac glycogen (30-fold above normal), developed dramatic left ventricular hypertrophy, and exhibited ventricular preexcitation and sinus node dysfunction. Electrophysiological testing demonstrated alternative atrioventricular conduction pathways consistent with WPW. Cardiac histopathology revealed that the annulus fibrosis, which normally insulates the ventricles from inappropriate excitation by the atria, was disrupted by glycogen-filled myocytes. These anomalous microscopic atrioventricular connections, rather than morphologically distinct bypass tracts, appeared to provide the anatomic substrate for ventricular preexcitation. CONCLUSIONS Our data establish PRKAG2 mutations as a glycogen storage cardiomyopathy, provide an anatomic explanation for electrophysiological findings, and implicate disruption of the annulus fibrosis by glycogen-engorged myocytes as the cause of preexcitation in Pompe, Danon, and other glycogen storage diseases.
Collapse
Affiliation(s)
- Michael Arad
- Department of Genetics, Harvard Medical School and Howard Hughes Medical Institute, 200 Longwood Ave, Boston, Mass 02115, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Liu YH, Liu YF, Guo XX. Current studies on anti-endotoxic chemical components of traditional Chinese medicine in China. Acta Pharmacol Sin 2001; 22:1071-7. [PMID: 11749802] [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: 02/23/2023] Open
Abstract
Endotoxin (ET) was found to have wide bioactivities and ET antagonists have become the pop research topic in life science. The chemical components of traditional Chinese medicine (TCM) were the substance basis of its pharmacology. This review demonstrated the study state of about 18 chemical components from TCM, eg, organic acids of Radix Isatidis, anisodamine, matrine, tetramethypyrazine, colchicine, and glycine, etc, which showed anti-endotoxin effects through different routes. But now the most of them were limited to the laboratory. In the future, the trends of development should not only enlarge the range of research, but also strengthen the clinical study.
Collapse
Affiliation(s)
- Y H Liu
- The Affiliated Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430030, China
| | | | | |
Collapse
|
28
|
Huang Z, Guo XX, Chen SX, Alvarez KM, Bell MW, Anderson RE. Regulation of type II phosphatidylinositol phosphate kinase by tyrosine phosphorylation in bovine rod outer segments. Biochemistry 2001; 40:4550-9. [PMID: 11294622 DOI: 10.1021/bi002575e] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [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] [Indexed: 11/28/2022]
Abstract
Type II phosphatidylinositol phosphate kinase (PIPKII) is an enzyme responsible for the synthesis of phosphatidylinositol-4,5-bisphosphate (PI-4,5-P(2)) from phosphatidylinositol-5-phosphate (PI-5-P). In this study, we demonstrate the presence of PIPKII alpha in bovine photoreceptor rod outer segments (ROS) and the involvement of tyrosine phosphorylation in the regulation of its activity. PIPKII activity in bovine ROS was verified by the preferential conversion of synthetic dipalmitoyl PI-5-P to PI-4,5-P(2), lack of effect of phosphatidic acid, inhibition by heparin, immunoreaction with an anti-PIPKII alpha antibody on Western blots, and immunocytochemical localization in bovine and rat ROS by anti-PIPKII alpha. Immunoprecipitates of bovine ROS with the anti-PIPKII alpha antibody possessed PIPK enzymatic activity and preferentially used PI-5-P as substrate for PI-4,5-P(2) biosynthesis. The activity of PIPKII was greatly increased under conditions favoring tyrosine phosphorylation in ROS, and PIPKII activity was immunoprecipitated with anti-phosphotyrosine (anti-PY) antibodies from tyrosine phosphorylated ROS. Preincubation of ROS with tyrosine kinase inhibitors almost abolished the kinase activity in the anti-PY immunoprecipitates. Immunoblot analysis showed that PIPKII alpha was present in anti-PY immunoprecipitates from phosphorylated ROS but not from nonphosphorylated controls. We conclude that PIPKII alpha is present in ROS and that its activity is regulated by tyrosine phosphorylation.
Collapse
Affiliation(s)
- Z Huang
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104, USA
| | | | | | | | | | | |
Collapse
|
29
|
Guo XX, Huang Z, Bell MW, Chen H, Anderson RE. Tyrosine phosphorylation is involved in phosphatidylinositol 3-kinase activation in bovine rod outer segments. Mol Vis 2000; 6:216-21. [PMID: 11063755] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
PURPOSE We have previously shown that phosphatidylinositol 3-kinase (PI 3-kinase) activity is present in bovine rod outer segments (ROS). The present study was undertaken to investigate the mechanism of PI 3-kinase activation in these membranes. METHODS Tyrosine-phosphorylated ROS (PY-ROS) were obtained by incubating ROS with ATP, MgCl2, and orthovanadate (Na3VO4), a tyrosine phosphatase inhibitor. Non-phosphorylated ROS (N-ROS) were obtained by incubating ROS under the same conditions, but without ATP and orthovanadate. Both were subjected to immunoprecipitation using antibodies against the regulatory p85 (anti-p85) subunit of PI 3-kinase, the catalytic p110 (anti-p110) subunit of PI 3-kinase, or phosphotyrosine (anti-PY). The immunoprecipitates (IPs) were assayed for PI 3-kinase activity. Enzyme assay products were separated by thin-layer chromatography (TLC), deacylated, and identified by high performance liquid chromatography (HPLC). RESULTS PI 3-kinase activity in anti-p85 and p110alpha IPs was significantly higher in PY-ROS than in N-ROS. No enzyme activity was recovered in anti-p110beta IPs. PI 3-kinase activity in anti-PY IPs from PY-ROS was six-fold greater than those from N-ROS. Immunoblot analysis showed that the amount of p85 in PY IPs from PY-ROS was significantly higher than those from N-ROS. However, tyrosine phosphorylation of p85 and p110alpha was not observed in anti-p85 and anti-p110alpha IPs that were probed with anti-PY. CONCLUSIONS This study indicates that the p85/p110alpha complex of PI 3-kinase is present in ROS and tyrosine phosphorylation is involved in the regulation of its activity.
Collapse
Affiliation(s)
- X X Guo
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | | | | | | | | |
Collapse
|
30
|
Bell MW, Desai N, Guo XX, Ghalayini AJ. Tyrosine phosphorylation of the alpha subunit of transducin and its association with Src in photoreceptor rod outer segments. J Neurochem 2000; 75:2006-19. [PMID: 11032890 DOI: 10.1046/j.1471-4159.2000.0752006.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [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] [Indexed: 11/20/2022]
Abstract
Recent evidence indicates that tyrosine phosphorylation may play important roles in retinal photoreceptor rod outer segments (ROS). We investigated the tyrosine phosphorylation of endogenous proteins in isolated bovine ROS. Several proteins with apparent molecular masses of 31, 39, 60, 83, 90, 97, 120, 140, and 180 kDa were tyrosine-phosphorylated in ROS incubated with Mg(2+), ATP, and orthovanadate. Several tyrosine kinase inhibitors significantly inhibited tyrosine phosphorylation of these proteins in ROS. The 39- and 60-kDa tyrosine-phosphorylated proteins were identified as the alpha subunit of the G protein transducin (Talpha) and the tyrosine kinase Src, respectively. The presence of Src and tyrosine kinase activity in bovine ROS was confirmed by their cofractionation with rhodopsin and Talpha on continuous sucrose gradients. Several tyrosine-phosphorylated proteins, including Src, coimmunoprecipitated with Talpha. The association of Src with Talpha was detected in the absence of tyrosine phosphorylation, but was enhanced with increased tyrosine phosphorylation of ROS. Moreover, tyrosine kinase activity also associated with Talpha was sevenfold higher under tyrosine-phosphorylating conditions. The recovery of transducin by hypotonic GTP extraction from tyrosine-phosphorylated ROS was significantly less than that from nonphosphorylated ROS. We localized the site on Talpha phosphorylated by Src to the amino-terminal half by limited tryptic digests, and further mapped it by ion trap mass spectrometry to Tyr(142) in the helical domain of Talpha. Talpha was also tyrosine-phosphorylated in vivo in rat retina, but this phosphorylation was not affected by light.
Collapse
Affiliation(s)
- M W Bell
- Department of Biochemistry, Baylor College of Medicine, Houston, Texas, USA
| | | | | | | |
Collapse
|
31
|
Abstract
The hydrolysis of phosphatidylinositol 4,5-bisphosphate is regulated by light in retinal rod outer segment (ROS) membranes. We recently reported that the activities of phosphatidylinositol synthetase and phosphatidylinositol 3-kinase are also higher in bleached (light-exposed) ROS (B-ROS). In this study, we investigated the effect of bleaching on diacylglycerol (DAG) kinase (DAG-kinase) activity in bovine and rat ROS membranes prepared from dark-adapted (D-ROS) or bleached (B-ROS) retinas. In bovine ROS, DAG-kinase activity toward endogenous DAG substrate was higher in B-ROS than in D-ROS. Quantification of DAG in both sets of membranes showed that the levels were the same, eliminating the possibility that the greater DAG-kinase activity was due to higher levels of endogenous substrate in B-ROS. DAG-kinase activity was also higher in B-ROS against an exogenous, water-soluable substrate (1, 2-didecanoyl-rac-glycerol), which competed with endogenous DAG substrate and saturated at approximately 2 mM. Immunoblot analysis with an anti-DAG-kinase gamma polyclonal antibody demonstrated that the gamma isoform was present in isolated bovine ROS. Immunocytochemistry of frozen bovine retinal sections confirmed the presence of DAG-kinase gamma immunoreactivity in ROS, as well as other retinal cells. Quantification of the immunoreactive products on western blots showed that more DAG-kinase gamma was present in B-ROS than in D-ROS. In an in vivo experiment, ROS prepared from rats exposed to 30 min of room light had greater DAG-kinase activity than ROS prepared from dark-adapted animals. Taken together, these data suggest that light exposure leads to the translocation of DAG-kinase from the cytosol to ROS membranes and that the greater DAG-kinase activity in B-ROS is due to the presence of more protein associated with ROS membranes.
Collapse
Affiliation(s)
- Z Huang
- Departments of Ophthalmology, Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center Dean A. McGee Eye Institute, Oklahoma City, Oklahoma, USA
| | | | | | | | | |
Collapse
|
32
|
|
33
|
Ghalayini AJ, Weber NR, Rundle DR, Koutz CA, Lambert D, Guo XX, Anderson RE. Phospholipase Cgamma1 in bovine rod outer segments: immunolocalization and light-dependent binding to membranes. J Neurochem 1998; 70:171-8. [PMID: 9422360 DOI: 10.1046/j.1471-4159.1998.70010171.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [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] [Indexed: 02/05/2023]
Abstract
We have investigated the isozymes of a phosphoinositide-specific phospholipase C (PLC) in bovine retina using several monoclonal antisera to PLCbeta1, gamma1, and delta1. Immunoblot analysis showed that all three isozymes were present in the retina. Immunocytochemical localization in frozen bovine retina sections showed that PLCgamma1 was present in the photoreceptor cell layer, outer plexiform cell layer, inner plexiform cell layer, and ganglion cell layer. Immunoreaction within the photoreceptor cell layer was dependent on dark/light adaptation state of retinas. Immunoblot analysis of rod outer segments (ROS) with monoclonal or polyclonal antibodies to PLCgamma1 showed the presence of an immunoreactive band of 140 kDa. ROS prepared from retinas light-adapted in vitro had more PLCgamma1 on immunoblots than ROS from dark-adapted retinas. PLC enzyme activity in ROS from light-adapted retinas was 69 and 46% higher than ROS from dark-adapted retinas, when assayed in the presence and absence of ATP, respectively. This increase in enzyme activity was observed at [Ca2+]free between 0.32 and 100 microM. These results demonstrate the presence of PLCgamma1 in bovine ROS and show that ROS prepared from light-adapted retinas are enriched in this isozyme, suggesting that light may promote the binding of this isozyme to bleached ROS membranes.
Collapse
Affiliation(s)
- A J Ghalayini
- Department of Ophthalmology, Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City 73104, USA
| | | | | | | | | | | | | |
Collapse
|
34
|
|
35
|
Guo XX, Qian ZF. [Changes in type II alveolar epithelial cells in experimental allergic alveolitis]. Zhonghua Bing Li Xue Za Zhi 1992; 21:241-3. [PMID: 1473211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Changes of type II alveolar epithelial cells (type II cells) were studied in experimental allergic alveolitis by using enzyme histochemical, electron microscopic and morphometric techniques. The results showed that the number of type II cells increased obviously after exposed to thermoactinomyces vulgaris (TV). The peak was on the 15th day and then decreased gradually till to normal on the 180th day. Type II cells could be divided into two populations in TV-treated rats, namely, the large type II cells and the small type II cells. The former ones bore a diameter larger than the value of mean + 2.58s and mean indicated the mean value of type II cells diameters of the controls. The large type II cells are known to be the hypertrophic cells.
Collapse
Affiliation(s)
- X X Guo
- Department of Pathology, Hunan Medical University, Changsha
| | | |
Collapse
|