1
|
Zhao HN, Yin H, Liu JY, Song LL, Peng YL, Ma BY. Deep learning-assisted ultrasonic diagnosis of cervical lymph node metastasis of thyroid cancer: a retrospective study of 3059 patients. Front Oncol 2024; 14:1204987. [PMID: 38390270 PMCID: PMC10881794 DOI: 10.3389/fonc.2024.1204987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 01/09/2024] [Indexed: 02/24/2024] Open
Abstract
Objective This study aimed to develop a deep learning system to identify and differentiate the metastatic cervical lymph nodes (CLNs) of thyroid cancer. Methods From January 2014 to December 2020, 3059 consecutive patients with suspected with metastatic CLNs of thyroid cancer were retrospectively enrolled in this study. All CLNs were confirmed by fine needle aspiration. The patients were randomly divided into the training (1228 benign and 1284 metastatic CLNs) and test (307 benign and 240 metastatic CLNs) groups. Grayscale ultrasonic images were used to develop and test the performance of the Y-Net deep learning model. We used the Y-Net network model to segment and differentiate the lymph nodes. The Dice coefficient was used to evaluate the segmentation efficiency. Sensitivity, specificity, accuracy, positive predictive value (PPV), and negative predictive value (NPV) were used to evaluate the classification efficiency. Results In the test set, the median Dice coefficient was 0.832. The sensitivity, specificity, accuracy, PPV, and NPV were 57.25%, 87.08%, 72.03%, 81.87%, and 66.67%, respectively. We also used the Y-Net classified branch to evaluate the classification efficiency of the LNs ultrasonic images. The classification branch model had sensitivity, specificity, accuracy, PPV, and NPV of 84.78%, 80.23%, 82.45%, 79.35%, and 85.61%, respectively. For the original ultrasonic reports, the sensitivity, specificity, accuracy, PPV, and NPV were 95.14%, 34.3%, 64.66%, 59.02%, 87.71%, respectively. The Y-Net model yielded better accuracy than the original ultrasonic reports. Conclusion The Y-Net model can be useful in assisting sonographers to improve the accuracy of the classification of ultrasound images of metastatic CLNs.
Collapse
Affiliation(s)
- Hai Na Zhao
- Department of Ultrasonography, West China hospital of Sichuan University, Chengdu, Sichuan, China
| | - Hao Yin
- Computer science of Sichuan University, Chengdu, Sichuan, China
| | - Jing Yan Liu
- Department of Ultrasonography, West China hospital of Sichuan University, Chengdu, Sichuan, China
| | - Lin Lin Song
- Department of Ultrasonography, West China hospital of Sichuan University, Chengdu, Sichuan, China
| | - Yu Lan Peng
- Department of Ultrasonography, West China hospital of Sichuan University, Chengdu, Sichuan, China
| | - Bu Yun Ma
- Department of Ultrasonography, West China hospital of Sichuan University, Chengdu, Sichuan, China
| |
Collapse
|
2
|
Pan Y, Song LL, Gao Y, Zhou HH, Sui XL, Yu GH. [Radical dissection of lymph nodes with heterogenic tumors: analysis of 9 cases]. Zhonghua Bing Li Xue Za Zhi 2024; 53:71-73. [PMID: 38178750 DOI: 10.3760/cma.j.cn112151-20230906-00138] [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: 01/06/2024]
Affiliation(s)
- Y Pan
- School of Clinical Medicine, Weifang Medical University, Weifang 261000, China Department of Pathology, Yantai Yuhuangding Hospital, Yantai 264000, China
| | - L L Song
- The Second Medical College of Binzhou Medical University, Yantai 264003, China
| | - Y Gao
- Department of Pathology, Yantai Yuhuangding Hospital, Yantai 264000, China
| | - H H Zhou
- Department of Pathology, Yantai Yuhuangding Hospital, Yantai 264000, China
| | - X L Sui
- Department of Pathology, Yantai Yuhuangding Hospital, Yantai 264000, China
| | - G H Yu
- Department of Pathology, Yantai Yuhuangding Hospital, Yantai 264000, China
| |
Collapse
|
3
|
Liu MH, Tang Y, Qu LQ, Song LL, Lo HH, Zhang RL, Yun XY, Wang HM, Chan JTW, Wu JH, Wang CR, Wong VKW, Wu AG, Law BYK. Raddeanin A isolated from Anemone raddeana Regel improves pathological and cognitive deficits of the mice model of Alzheimer's disease by targeting β-amyloidosis. Phytomedicine 2024; 122:155121. [PMID: 37856988 DOI: 10.1016/j.phymed.2023.155121] [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] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 06/30/2023] [Accepted: 09/27/2023] [Indexed: 10/21/2023]
Abstract
BACKGROUND Raddeanin A is a triterpenoid isolated from Anemone raddeana Regel. It exhibits a broad spectrum of biological activities such as anti-tumor and anti-inflammatory, however, its neuroprotective effect in targeting Alzheimer's disease (AD) remains uninvestigated. PURPOSE To provide scientific base for the development of novel AD drug by clarifying the neuroprotective effect and molecular mechanisms of raddeanin A in both in vitro and in vivo AD model. STUDY DESIGN To confirm the neuroprotective role of raddeanin A in the treatment of AD, its mechanisms and effects on β-amyloidosis and Aβ fibrillation was studied in U87 cells. Besides, the improvement on cognitive deficit, pathological defects, reactive astrocyte clusters, inhibition on neuronal inflammation and apoptosis were further studied in 3 x Tg-AD mice model of AD. METHODS Real-time PCR, western blot, dot blot, biolayer interferometry and bioinformatics analysis were used to confirm the in vitro effect and targets of raddeanin A on β-amyloidosis and its associated protein network. A series of experiments including Morris water maze, H&E staining, nissl staining and immunofluorescence analysis were conducted to confirm the protective behavioral effect of raddeanin A in the in vivo AD mice model. RESULTS Raddeanin A was identified to reduce β-amyloidosis in U87 cells and 3 x Tg-AD mice model of AD by decreasing level of BACE1, APP, APP-β and Aβ. Raddeanin A improved behavioral, spatial memory and learning ability in the AD mice. In the cortex and hippocampus, raddeanin A improved the morphology and arrangement of neurons, lower the level of reactive astrocyte marker GFAP and apoptotic marker proteins Bax/Bcl2 ratio. Moreover, raddeanin A upregulated the mRNA and protein level of Prkcα in the hippocampus of AD mice whose neuroprotective effect was exerted possibly via the activation of protein kinase C. CONCLUSION As a novel natural agent targeting β-amyloidosis, our results provide the first evidence of the multiple in vitro and in vivo neuroprotective effect of raddeanin A, suggesting its potential therapeutic application in preventing or alleviating the symptoms of AD.
Collapse
Affiliation(s)
- Meng Han Liu
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Yong Tang
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China; Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Li Qun Qu
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Lin Lin Song
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Hang Hong Lo
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Rui Long Zhang
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Xiao Yun Yun
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Hui Miao Wang
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Joyce Tsz Wai Chan
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Jian Hui Wu
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Cai Ren Wang
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Vincent Kam Wai Wong
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - An Guo Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Betty Yuen-Kwan Law
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China.
| |
Collapse
|
4
|
Li SQ, Zhao YQ, Zhao XL, Wang XG, Li SB, Song LL, Zhou YJ, Zang WT, Hao T, Yao XJ. [A case of prefibrotic primary myelofibrosis in a child with type-Ⅰ CALR gene mutation]. Zhonghua Er Ke Za Zhi 2023; 61:928-930. [PMID: 37803861 DOI: 10.3760/cma.j.cn112140-20230616-00407] [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: 10/08/2023]
Affiliation(s)
- S Q Li
- Department of Pediatrics, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y Q Zhao
- Department of Pediatrics, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X L Zhao
- Department of Pediatrics, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X G Wang
- Department of Pediatrics, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - S B Li
- Department of Pediatrics, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - L L Song
- Department of Pediatrics, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y J Zhou
- Department of Pediatrics, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - W T Zang
- Department of Pediatrics, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - T Hao
- Department of Pediatrics, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X J Yao
- Department of Pediatrics, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| |
Collapse
|
5
|
Yin Y, Wu SS, Yang P, Liu XQ, Gao Y, Song LL, Sui XL, Yu GH. [Clinicopathological analysis of three cases EB virus-positive mucocutaneous ulcer]. Zhonghua Bing Li Xue Za Zhi 2023; 52:501-503. [PMID: 37106295 DOI: 10.3760/cma.j.cn112151-20221209-01036] [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: 04/29/2023]
Affiliation(s)
- Y Yin
- Department of Pathology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai 264000, China
| | - S S Wu
- Department of Pathology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai 264000, China
| | - P Yang
- Department of Pathology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai 264000, China
| | - X Q Liu
- Department of Hematology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai 264000, China
| | - Y Gao
- Department of Pathology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai 264000, China
| | - L L Song
- The Second Medical College of Binzhou Medical University, Yantai 264003, China
| | - X L Sui
- Department of Pathology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai 264000, China
| | - G H Yu
- Department of Pathology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai 264000, China
| |
Collapse
|
6
|
Song LL, Zheng YJ, Jian XD. [Clinical characteristics of acute occupational poisoning caused by carbon dioxide leakage from a cargo ship]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:301-303. [PMID: 37248186 DOI: 10.3760/cma.j.cn121094-20220418-00202] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Carbon dioxide is a simple asphyxial gas, with low concentrations having an excitatory effect on the respiratory center, while high concentrations have an inhibitory effect on the respiratory center. Simple carbon dioxide poisoning is rarely seen clinically. This article reviews and analyzes the treatment process of 9 cases of acute inhalation carbon dioxide poisoning in a cargo ship carbon dioxide leakage accident in May 2019, summarizes clinical treatment experience, and provides timely and effective treatment for acute pulmonary edema caused by acute inhalation carbon dioxide poisoning. In particular, the application of hormones has a good prognosis, improving clinicians' understanding of the disease.
Collapse
Affiliation(s)
- L L Song
- Department of Emergency, Weihai Municipal Hospital of Shandong University, Weihai 264200, China Department of Poisoning and Occupational Disease, Emergency Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Y J Zheng
- Department of Emergency, Weihai Municipal Hospital of Shandong University, Weihai 264200, China
| | - X D Jian
- Department of Poisoning and Occupational Disease, Emergency Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
| |
Collapse
|
7
|
Geng ZY, Zhang Y, Bi H, Zhang D, Li Z, Jiang L, Song LL, Li XY. Addition of preoperative transversus abdominis plane block to multimodal analgesia in open gynecological surgery: a randomized controlled trial. BMC Anesthesiol 2023; 23:21. [PMID: 36635627 PMCID: PMC9835300 DOI: 10.1186/s12871-023-01981-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/09/2023] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Transversus abdominis plane (TAP) block can provide effective analgesia for abdominal surgery. However, it was questionable whether TAP had additional effect in the context of multimodal analgesia (MMA). Therefore, this study aimed to assess the additional analgesic effect of preoperative TAP block when added to MMA protocol in open gynecological surgery. METHODS In this prospective, randomized-controlled trial, 64 patients scheduled for open gynecological surgery were randomized to receive preoperative TAP block (Study group, n = 32) or placebo (Control group, n = 32) in addition to MMA protocol comprising dexamethasone, acetaminophen, flurbiprofen and celecoxib, and rescued morphine analgesia. The primary outcome was rescued morphine within 24 h after surgery. Secondary outcomes included pain scores, adverse effects, quality of recovery measured by 40-item quality of recovery questionnaire score (QoR-40) at 24 h, and quality of life measured with short-form health survey (SF - 36) on postoperative day (POD) 30. RESULTS The Study group had less rescued morphine than the control group within 24 h [5 (2-9) vs. 8.5 (5-12.8) mg, P = 0.013]. The Study group had lower pain scores at 1 h [3 (2-4) vs. 4 (3-5), P = 0.007], 2 h [3 (2-4) vs. 3.5 (3-5), P = 0.010] and 6 h [3 (2-3) vs. 3 (2.3-4), P = 0.028], lower incidence of nausea at 48 h (25.8% vs. 50%, P = 0.039), and higher satisfaction score [10 (10-10) vs. 10 (8-10), P = 0.041]. The SF-36 bodily pain score on POD 30 was higher in the Study group (59 ± 13 vs. 49 ± 16, P = 0.023). CONCLUSIONS Preoperative TAP block had additional analgesic effect for open gynecological surgery when used as part of multimodal analgesia. Rescued morphine within 24 h was significantly reduced and the SF-36 bodily pain dimension at 30 days after surgery was significantly improved. TRIAL REGISTRATION www.chictr.org.cn (ChiCTR2000040343, on Nov 28 2020).
Collapse
Affiliation(s)
- Zhi Yu Geng
- grid.411472.50000 0004 1764 1621Department of Anesthesiology, Peking University First Hospital, Beijing, China
| | - Yan Zhang
- grid.411472.50000 0004 1764 1621Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
| | - Hui Bi
- grid.411472.50000 0004 1764 1621Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
| | - Dai Zhang
- grid.411472.50000 0004 1764 1621Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
| | - Zheng Li
- grid.411472.50000 0004 1764 1621Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
| | - Lu Jiang
- grid.411472.50000 0004 1764 1621Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
| | - Lin Lin Song
- grid.411472.50000 0004 1764 1621Department of Anesthesiology, Peking University First Hospital, Beijing, China
| | - Xue Ying Li
- grid.411472.50000 0004 1764 1621Department of Biostatics, Peking University First Hospital, Beijing, China
| |
Collapse
|
8
|
Song LL, Yu JH, Hu XL, Li X. [A suspected case of delayed encephalopathy after acute hydrogen sulfide poisoning]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:529-531. [PMID: 35915946 DOI: 10.3760/cma.j.cn121094-20220120-00035] [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: 06/15/2023]
Abstract
The main component of the gas in the fish storage tank is hydrogen sulfide. Hydrogen sulfide poisoning is a common occupational chemical poisoning among fishermen in summer, and acute hydrogen sulfide poisoning can manifest as toxic encephalopathy. This paper analyzes a patient with delayed encephalopathy suspected of acute hydrogen sulfide poisoning. The patient was unconscious for 18 days after waking up for 5 days after acute hydrogen sulfide poisoning. After waking up again, there were symptoms such as decreased limb muscle strength, ataxia, swallowing, dysarthria, and the clinical characteristics were significantly different from those of delayed encephalopathy caused by acute carbon monoxide poisoning, such as decreased cognitive function and damage to extrapyramidal system.
Collapse
Affiliation(s)
- L L Song
- Occupational Disease Department, the Affiliated Weihai Second Municipal Hospital of Qingdao University, Weihai 264200, China
| | - J H Yu
- Occupational Disease Department, the Affiliated Weihai Second Municipal Hospital of Qingdao University, Weihai 264200, China
| | - X L Hu
- Occupational Disease Department, the Affiliated Weihai Second Municipal Hospital of Qingdao University, Weihai 264200, China
| | - X Li
- Shandong First Medical University (Shandong Academy of Medical Sciences, Shandong Academy of Occupational Health and Occupational Medicine), Jinan 250062, China
| |
Collapse
|
9
|
Wang HM, Qu LQ, Ng JPL, Zeng W, Yu L, Song LL, Wong VKW, Xia CL, Law BYK. Natural Citrus flavanone 5-demethylnobiletin stimulates melanogenesis through the activation of cAMP/CREB pathway in B16F10 cells. Phytomedicine 2022; 98:153941. [PMID: 35114451 DOI: 10.1016/j.phymed.2022.153941] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 12/26/2021] [Accepted: 01/12/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND 5-demethylnobiletin is a natural polymethoxyflavone which is isolated from the extract of citrus fruits peels. It exhibits a broad spectrum of biological activities such as anti-cancer, anti-inflammatory, cardiovascular protective and neuroprotective effects, however, its effect in melanogenesis remains uninvestigated. PURPOSE Melanin synthesis is a very important biological process in curing disease such as vitiligo with depigmentation on the skin. In the current work, we aim to confirm the bioactivity and mechanism of 5-demethylnobiletin in stimulating melanogenesis. STUDY DESIGN To confirm the mechanistic role of 5-demethylnobiletin in enhancing melanogenesis, its effect on the activity of tyrosinase, together with the level of microphthalmia-associated transcription factor (MITF), Trp-1, Trp-2, melanocyte-specific marker protein PMEL17, Rab27a, Melanophilin and Myosin VA were studied in B16F10 melanoma cells. METHODS Multiple biological assays on melanogenesis-associated proteins such as melanin content detection, tyrosinase activity colorimetric assay, qPCR, western blot analysis, dual-luciferase reporter assay, cAMP activity assay and Fontana-Masson ammoniacal silver staining were used to confirm the role of 5-demethylnobiletin in stimulating melanin synthesis and the transportation of melanosomes. RESULTS As confirmed by multiple biological assays, 5-demethylnobiletin is found to stimulate dendrite structure formation in cells, melanin synthesis and the transportation of melanosomes, via inducing the phosphorylation of cAMP response element-binding protein (CREB) and increasing the intracellular levels of cAMP in vitro through the PKA-dependent pathway. CONCLUSION The findings suggested that 5-demethylnobiletin may be considered as a potential natural product candidate for patients with pigment disorder.
Collapse
Affiliation(s)
- Hui Miao Wang
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Li Qun Qu
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Jerome P L Ng
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Wu Zeng
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Lu Yu
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Lin Lin Song
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Vincent Kam Wai Wong
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Cheng Lai Xia
- Affiliated Foshan Maternity & Child Healthcare Hospital, Southern Medical University, Foshan, Guangdong 528000, China; School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510150, China.
| | - Betty Yuen Kwan Law
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China.
| |
Collapse
|
10
|
Hu XL, Song LL. [Analysis on the incidence of new occupational diseases in Weihai City from 2009 to 2020]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:132-135. [PMID: 35255581 DOI: 10.3760/cma.j.cn121094-20201103-00609] [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
Objective: To analyze the pattern and characteristics of occupational diseases in Weihai City from 2009 to 2020, and to provide scientific basis for the formulation of occupational disease prevention. Methods: In February 2021, retrospective analysis was performed on the cases of occupational diseases diagnosed from 2009 to 2020 in Weihai City. The relevant information and data were collected to analyze the types of occupational diseases, onset age, working age, diagnosis time, industry distribution, economic type and enterprise size distribution. Results: From 2009 to 2020, a total of 453 cases of new occupational diseases were reported in Weihai City. There were 431 males (95.14%) and 22 females (4.86%) . The average onset age was (49.16±8.51) years, and the average working age was (17.89±9.30) years. The incidence of pneumoconiosis and other respiratory diseases (322 cases, 71.08%) , occupational otolaryngology and oral diseases (71 cases, 15.67%) and occupational chemical poisoning (36 cases, 7.95%) were the top 3 cases, of which 313 cases were pneumoconiosis and 69 cases were noise deafness. The cases were mainly concentrated in the 40-59 years age group (357 cases, 78.81%) and the 10-19 years working age group (175 cases, 38.63%) . There were significant differences in the incidence of occupational diseases in different ages and different working ages (χ(2)=97.64, 80.74, P<0.001) . The new cases were mainly in mining industry (134 cases, 29.58%) , shipbuilding or maintenance industry (97 cases, 21.41%) , and private enterprises (350 cases, 77.26%) . Conclusion: Pneumoconiosis and noise deafness are the main emerging occupational diseases in Weihai City. Occupational disease prevention and control in private enterprises such as mining and shipbuilding or maintenance industry should be strengthened.
Collapse
Affiliation(s)
- X L Hu
- The Affiliated Weihai Second Municipal Hospital of Qingdao University Occupational Disease Department, Weihai 264200, China
| | - L L Song
- The Affiliated Weihai Second Municipal Hospital of Qingdao University Occupational Disease Department, Weihai 264200, China
| |
Collapse
|
11
|
Tang B, Zeng W, Song LL, Wang HM, Qu LQ, Lo HH, Yu L, Wu AG, Wong VKW, Law BYK. Extracellular Vesicle Delivery of Neferine for the Attenuation of Neurodegenerative Disease Proteins and Motor Deficit in an Alzheimer’s Disease Mouse Model. Pharmaceuticals (Basel) 2022; 15:ph15010083. [PMID: 35056140 PMCID: PMC8779383 DOI: 10.3390/ph15010083] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [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: 10/27/2021] [Revised: 12/30/2021] [Accepted: 01/03/2022] [Indexed: 01/08/2023] Open
Abstract
Exosomes are nano-extracellular vesicles with diameters ranging from 30 to 150 nm, which are secreted by the cell. With their role in drug cargo loading, exosomes have been applied to carry compounds across the blood–brain barrier in order to target the central nervous system (CNS). In this study, high-purity exosomes isolated by the ultra-high-speed separation method were applied as the natural compound carrier, with the loading efficiency confirmed by UHPLC-MS analysis. Through the optimization of various cargo loading methods using exosomes, this study compared the efficiency of different ways for the separation of exosomes and the exosome encapsulation of natural compounds with increasing molecular weights via extensive in vitro and in vivo efficacy studies. In a pharmacokinetic study, our data suggested that the efficiency of compound’s loading into exosomes is positively correlated to its molecular weight. However, with a molecular weight of greater than 1109 Da, the exosome-encapsulated natural compounds were not able to pass through the blood–brain barrier (BBB). In vitro cellular models confirmed that three of the selected exosome-encapsulated natural compounds—baicalin, hederagenin and neferine—could reduce the level of neurodegenerative disease mutant proteins—including huntingtin 74 (HTT74), P301L tau and A53T α-synuclein (A53T α-syn)—more effectively than the compounds alone. With the traditional pharmacological role of the herbal plant Nelumbo nucifera in mitigating anxiety, exosome-encapsulated-neferine was, for the first time, reported to improve the motor deficits of APP/PS1 (amyloid precursor protein/ presenilin1) double transgenic mice, and to reduce the level of β-amyloid (Aβ) in the brain when compared with the same concentration of neferine alone. With the current trend in advocating medicine–food homology and green healthcare, this study has provided a rationale from in vitro to in vivo for the encapsulation of natural compounds using exosomes for the targeting of BBB permeability and neurodegenerative diseases in the future.
Collapse
Affiliation(s)
- Bin Tang
- Neher’s Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau 999078, China; (B.T.); (W.Z.); (L.L.S.); (H.M.W.); (L.Q.Q.); (H.H.L.)
| | - Wu Zeng
- Neher’s Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau 999078, China; (B.T.); (W.Z.); (L.L.S.); (H.M.W.); (L.Q.Q.); (H.H.L.)
| | - Lin Lin Song
- Neher’s Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau 999078, China; (B.T.); (W.Z.); (L.L.S.); (H.M.W.); (L.Q.Q.); (H.H.L.)
| | - Hui Miao Wang
- Neher’s Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau 999078, China; (B.T.); (W.Z.); (L.L.S.); (H.M.W.); (L.Q.Q.); (H.H.L.)
| | - Li Qun Qu
- Neher’s Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau 999078, China; (B.T.); (W.Z.); (L.L.S.); (H.M.W.); (L.Q.Q.); (H.H.L.)
| | - Hang Hong Lo
- Neher’s Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau 999078, China; (B.T.); (W.Z.); (L.L.S.); (H.M.W.); (L.Q.Q.); (H.H.L.)
| | - Lu Yu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou 646000, China; (L.Y.); (A.G.W.)
| | - An Guo Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Druggability Evaluation, School of Pharmacy, Southwest Medical University, Luzhou 646000, China; (L.Y.); (A.G.W.)
| | - Vincent Kam Wai Wong
- Neher’s Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau 999078, China; (B.T.); (W.Z.); (L.L.S.); (H.M.W.); (L.Q.Q.); (H.H.L.)
- Correspondence: (V.K.W.W.); (B.Y.K.L.)
| | - Betty Yuen Kwan Law
- Neher’s Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau 999078, China; (B.T.); (W.Z.); (L.L.S.); (H.M.W.); (L.Q.Q.); (H.H.L.)
- Correspondence: (V.K.W.W.); (B.Y.K.L.)
| |
Collapse
|
12
|
Zeng W, Wu AG, Zhou XG, Khan I, Zhang RL, Lo HH, Qu LQ, Song LL, Yun XY, Wang HM, Chen J, Ng JPL, Ren F, Yuan SY, Yu L, Tang Y, Huang GX, Wong VKW, Chung SK, Mok SWF, Qin DL, Sun HL, Liu L, Hsiao WLW, Law BYK. Saponins isolated from Radix polygalae extent lifespan by modulating complement C3 and gut microbiota. Pharmacol Res 2021; 170:105697. [PMID: 34062240 DOI: 10.1016/j.phrs.2021.105697] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/26/2021] [Accepted: 05/26/2021] [Indexed: 02/07/2023]
Abstract
With the increase in human lifespan, population aging is one of the major problems worldwide. Aging is an irreversible progressive process that affects humans via multiple factors including genetic, immunity, cellular oxidation and inflammation. Progressive neuroinflammation contributes to aging, cognitive malfunction, and neurodegenerative diseases. However, precise mechanisms or drugs targeting age-related neuroinflammation and cognitive impairment remain un-elucidated. Traditional herbal plants have been prescribed in many Asian countries for anti-aging and the modulation of aging-related symptoms. In general, herbal plants' efficacy is attributed to their safety and polypharmacological potency via the systemic manipulation of the body system. Radix polygalae (RP) is a herbal plant prescribed for anti-aging and the relief of age-related symptoms; however, its active components and biological functions remained un-elucidated. In this study, an active methanol fraction of RP containing 17 RP saponins (RPS), was identified. RPS attenuates the elevated C3 complement protein in aged mice to a level comparable to the young control mice. The active RPS also restates the aging gut microbiota by enhancing beneficial bacteria and suppressing harmful bacteria. In addition, RPS treatment improve spatial reference memory in aged mice, with the attenuation of multiple molecular markers related to neuroinflammation and aging. Finally, the RPS improves the behavior and extends the lifespan of C. elegans, confirming the herbal plant's anti-aging ability. In conclusion, through the mouse and C. elegas models, we have identified the beneficial RPS that can modulate the aging process, gut microbiota diversity and rectify several aging-related phenotypes.
Collapse
Affiliation(s)
- Wu Zeng
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau; Department of Center for Neuro-metabolism and Regeneration Research, Bioland Laboratory, Guangzhou, China
| | - An Guo Wu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drug Ability Evaluation, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Xiao-Gang Zhou
- Sichuan Key Medical Laboratory of New Drug Discovery and Drug Ability Evaluation, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Imran Khan
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Rui Long Zhang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Hang Hong Lo
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Li Qun Qu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Lin Lin Song
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Xiao Yun Yun
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Hui Miao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Juan Chen
- The Key Laboratory of Molecular Biology of Infectious Diseases designated by the Chinese Ministry of Education, Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Jerome P L Ng
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Fang Ren
- The Key Laboratory of Molecular Biology of Infectious Diseases designated by the Chinese Ministry of Education, Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Si Yu Yuan
- The Key Laboratory of Molecular Biology of Infectious Diseases designated by the Chinese Ministry of Education, Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Lu Yu
- Sichuan Key Medical Laboratory of New Drug Discovery and Drug Ability Evaluation, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Yong Tang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau; Sichuan Key Medical Laboratory of New Drug Discovery and Drug Ability Evaluation, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Guo Xin Huang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Vincent Kam Wai Wong
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Sookja Kim Chung
- Department of Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Simon Wing Fai Mok
- Department of Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Da Lian Qin
- Sichuan Key Medical Laboratory of New Drug Discovery and Drug Ability Evaluation, Key Laboratory of Medical Electrophysiology of Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Hua Lin Sun
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Liang Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau.
| | - W L Wendy Hsiao
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau.
| | - Betty Yuen Kwan Law
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau.
| |
Collapse
|
13
|
Zhai ZH, Yu JH, Hu XL, Song LL, Ji ZX. [Occupational asthma caused by welding dust: a case report]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2020; 38:50-51. [PMID: 32062898 DOI: 10.3760/cma.j.issn.1001-9391.2020.01.012] [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]
|
14
|
Song LL, Lu HY, Xiao C, Wu LY, Wu D, Su JY, Zhou LY, Chang CK. [Study of iron overload assessment by T2* magnetic resonance imaging in patients with myelodysplastic syndromes]. Zhonghua Xue Ye Xue Za Zhi 2019; 40:222-226. [PMID: 30929390 PMCID: PMC7342544 DOI: 10.3760/cma.j.issn.0253-2727.2019.03.011] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Indexed: 01/19/2023]
Abstract
Objectives: To analyze the cardiac T2* value, liver iron concentration (LIC) , and related laboratory parameters in myelodysplastic syndrome (MDS) with iron overload and evaluate the changes of organ functions after iron chelation therapy. To explore the value of magnetic resonance imaging (MRI) T2* in making early diagnosis and assessing organs iron overload. Methods: Retrospective investigation was used to observe the cardiac T2* value, LIC, iron metabolism parameters and related laboratory parameters of 85 MDS patients from Nov 2014 to Jan 2018. Among them, 7 MDS patients with Low/Int-1 have received iron chelation therapy for 6 months during two MRI examinations. The above parameters were collected before and after iron chelation therapy for comparison. Results: Correlations were found between heart T2* value and age (rs=-0.290, P=0.007) and left ventricular ejection fraction (LVEF) (rs=0.265, P=0.009) . There was a significant negative correlation between heart T2* value and blood transfusion units (rs=-0.701, P<0.001) . There was a significant positive correlation between LIC and serum ferritin (SF) (rs=0.577, P<0.001) . There was also a correlation between LIC and ALT (rs=0.268, P=0.014) and blood transfusion units (rs=0.244, P=0.034) . There was no correlation between heart T2* and pro-BNP, SF (all P>0.05) , and no correlation between LIC and age (P>0.05) . The increase of heart T2* between the normal and abnormal groups was statistically significant (P=0.005) , but the iron overload ratio of the heart T2*<20 ms was not significant between the two groups. There was statistical significance in the proportion of severe liver iron overload (LIC>15 mg/g DW) (P=0.045) . After iron chelation therapy, the values of SF, transferrin saturation, ALT, AST, pro-BNP and LIC of 7 patients were decreased compared with values before iron chelation therapy, and the peripheral blood cell level was increased. However, the changes of LVEF and T2* values after iron chelation were not obvious. Conclusion: MRI T2* may be a predictor of iron overload in patients with MDS in early stage, and may be more valuable compare with LVEF, SF and other laboratory indicators. The safety and repeatability of MRI cardiac T2* examination are recognized, and it can be used as an ideal detection for patients with iron overload.
Collapse
Affiliation(s)
- L L Song
- Department of Hematology, Shanghai No.6 People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | - H Y Lu
- Department of Hematology, Yangpu Hospital, Tongji University, Shanghai 200090, China
| | - C Xiao
- Department of Hematology, Shanghai No.6 People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | - L Y Wu
- Department of Hematology, Shanghai No.6 People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | - D Wu
- Department of Hematology, Shanghai No.6 People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | - J Y Su
- Department of Hematology, Shanghai No.6 People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | - L Y Zhou
- Department of Hematology, Shanghai No.6 People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | - C K Chang
- Department of Hematology, Shanghai No.6 People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| |
Collapse
|
15
|
Zhao YS, Guo J, Xu F, Wu D, Wu LY, Song LL, Xiao C, Li X, Chang CK. [Predict response to decitabine in patients with myelodysplastic syndrome and related neoplasms]. Zhonghua Xue Ye Xue Za Zhi 2018; 38:124-128. [PMID: 28279036 PMCID: PMC7354175 DOI: 10.3760/cma.j.issn.0253-2727.2017.02.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
目的 探索预测骨髓增生异常综合征(MDS)及相关肿瘤地西他滨治疗反应的临床及分子学指标。 方法 回顾性分析109例接受地西他滨治疗的MDS及相关肿瘤患者临床资料,采用二代测序检测MDS常见突变基因的突变情况,分析患者临床特征及基因突变与地西他滨临床反应的关系。 结果 地西他滨中位疗程数为4(2~11)个,共74例(67.9%)患者获得治疗反应,其中30例(27.5%)获得完全缓解(CR);35例(32.1%)患者无反应。单因素分析结果显示,国际预后积分系统(IPSS)中危2+高危、复杂核型、单体核型、7号染色体异常及1个疗程后PLT倍增的患者可获得更高的CR率。66.7%(14/21)的复杂核型患者、58.8%(10/17)的单体核型患者及66.7%(10/15)的TP53基因突变患者获得CR;TP53基因突变常合并复杂核型及单体核型;多因素分析显示TP53突变、1个疗程后PLT倍增及复杂核型是预测地西他滨治疗获得CR的独立预后因素,其中TP53突变是最强的预测因子(OR=4.39,95%CI 1.20~16.06,P=0.026)。 结论 TP53基因突变、1个疗程后PLT倍增及复杂核型可预测地西他滨完全缓解。
Collapse
Affiliation(s)
- Y S Zhao
- Department of Hematology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Li H, Song LL, Shen LJ, Liu BQ, Zheng XX, Zhang LN, Li YY, Xia W, Zhang B, Zhou AF, Wang YJ, Xu SQ. [Association between maternal body height and risk of preterm birth]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:313-316. [PMID: 29609245 DOI: 10.3760/cma.j.issn.0254-6450.2018.03.012] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the association between maternal body height and risk of preterm birth. Methods: A total of 11 311 pregnant women who gave birth of live singletons were recruited from the Healthy Baby Cohort Study in Hubei province, China from September 2012 to October 2014. Finally 11 070 pregnant women were selected as study subjects. Data were collected by using questionnaires, their prenatal care records and medical records. The women were divided into 4 groups according to the quartiles distribution (<158 cm, 158- cm, 160- cm, and >164 cm). Gestational age was estimated according to maternal last menstrual time. Preterm birth was defined as delivering a live singleton infant at 28-37 weeks' gestational age. Logistic regression was used to calculate the odds ratios (OR) and 95% confidence intervals (CI) for the association between body height and preterm birth. Results: Among the 11 070 pregnant women, the incidence of preterm birth was 5.9%. Logistic regression analysis indicated that women in group with body height <158 cm had 46% (OR=1.46, 95%CI: 1.16-1.83) higher risk of giving preterm birth than those in group with body height >164 cm after adjustment for potential confounders. Every 1- cm increase in body height was associated with 3% lower risk of preterm birth (OR=0.97, 95%CI: 0.95-0.99). Conclusion: Shorter body height was a risk factor for preterm birth. It is necessary to strengthen the monitoring in pregnant women with short body height to reduce the risk of preterm birth.
Collapse
Affiliation(s)
- H Li
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - L L Song
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - L J Shen
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - B Q Liu
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - X X Zheng
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - L N Zhang
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Y Y Li
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - W Xia
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - B Zhang
- Woman and Children Medical and Healthcare Center of Wuhan, Wuhan 430030, China
| | - A F Zhou
- Woman and Children Medical and Healthcare Center of Wuhan, Wuhan 430030, China
| | - Y J Wang
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - S Q Xu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| |
Collapse
|
17
|
Sun YQ, Song LL, Tang HL. [Analysis of clinical data of 18 cases of carbon black pneumoconisosis in rubber industry]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2017; 35:314-315. [PMID: 28614942 DOI: 10.3760/cma.j.issn.1001-9391.2017.04.025] [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: 06/07/2023]
|
18
|
Liu Y, Fu QZ, Pu L, Song LL, Lyu GY, Liu J, Wang Z, Wang Z. [Expression and clinical significance of HMGA2 in renal carcinoma]. Zhonghua Zhong Liu Za Zhi 2017; 39:127-132. [PMID: 28219208 DOI: 10.3760/cma.j.issn.0253-3766.2017.02.010] [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 detect the high mobility group A2 (HMGA2) expression in renal carcinoma, and to explore the relationship with clinicopathological features and its significance for prognosis. Methods: 50 renal carcinoma specimens, 50 corresponding adjacent normal kidney tissue samples, and 40 benign renal tumor specimens were used in this study. The expressions of HMGA2 mRNA and protein were detected by RT-PCR, Western blot and immunohistochemical assays, and its relationship with clinicopathological features and prognosis in the renal carcinoma patients was analyzed. Results: The RT-PCR results showed that the relative expression levels of HMGA2 mRNA in the renal carcinoma, benign renal tumor tissues, and adjacent normal renal tissues were 0.84±0.23, 0.19± 0.06 and 0.08±0.04, respectively, and the expression in renal carcinoma tissue was significantly higher than those of the other 2 groups (P<0.01). The Western blot results showed that the relative expression levels of HMGA2 protein in the renal carcinoma, benign renal tumor tissues, and adjacent normal renal tissues were 0.91±0.24, 0.12±0.04 and 0.03±0.01, respectively, and the expression in renal carcinoma tissue was significantly higher than those of the other 2 groups (P<0.01). Immunohistochemical results showed that the expression of HMGA2 protein exhibited brown and tan granular, which mainly distributed in the cell nuclei. Among the 50 cases of renal carcinoma, 34 cases exhibited positive expression, with a positive rate of 68.0%. Among the 40 cases of benign tumor tissues, 3 cases had positive expression, with a positive rate of 7.5%, while among the 50 cases of adjacent normal renal tissues, there was only 1 case exhibiting positive expression of HMGA2 protein, with a positive rate of 2.0%. The protein expression of HMGA2 was significantly higher in the renal carcinoma than in the benign tumors and normal renal tissues (P=0.004). There was no statistically significant difference in the association of HMGA2 protein expressions with age, sex, tumor size and histological type (P>0.05), while significant difference did exist in the association with different statuses of TNM staging and lymph node metastasis (P<0.05). The median time to progression (TTP) in 34 HMGA2 protein-positive patients was (22.36±1.48) months and that of 16 HMGA2 protein-negative patients was (34.55±1.87) months (P<0.05). Conclusions: HMGA2 plays an important role in the tumorigenesis and development of renal carcinoma, and may be used as an important predictor for estimating the prognosis of renal carcinoma. HMGA2 might become a new diagnostic and prognostic marker for renal carcinoma.
Collapse
Affiliation(s)
- Y Liu
- Xi'an Jiaotong University Health Science Center, Xi'an, 710049, China
| | - Q Z Fu
- Department of Urological Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, China
| | - L Pu
- Department of Urological Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, China
| | - L L Song
- Department of Urological Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, China
| | - G Y Lyu
- Department of Urological Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, China
| | - J Liu
- Department of Urological Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, China
| | - Zhenlong Wang
- Department of Urological Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Ziming Wang
- Department of Urological Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| |
Collapse
|
19
|
Song LL, Zheng QQ, Xiao C, Guo J, Wu D, Su JY, Zhou LY, Chang CK. [Study of abnormal iron metabolism parameters and iron overload in patients with myelodysplastic syndromes]. Zhonghua Xue Ye Xue Za Zhi 2016; 37:903-907. [PMID: 27801326 PMCID: PMC7364871 DOI: 10.3760/cma.j.issn.0253-2727.2016.10.018] [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] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Indexed: 11/25/2022]
Abstract
Objective: To investigate the abnormalities of iron metabolism parameters, the prevalence and risk factors of iron overload and clinical characteristics of patients with myelodysplastic syndromes(MDS). Methods: Retrospective investigation was used to observe abnormal iron metabolism parameters and clinical characteristics of newly diagnosed 94 MDS patients in our center from June 2015 to March 2016. Results: Of 94 patients, 71(75.53%)had a hemoglobin level of less than 100 g/L at diagnosis. Iron overload was observed in 52(55.32%)of 94 MDS patients, in which a higher prevalence of iron overload was observed in low risk groups(IPSS low/Int-1 risk groups)than higher risk groups(Int-2/high risk groups). Higher levels of serum iron(SI)[36.5(8.5-64.7)mmol/L vs 25.2(3.7-45.3)mmol/L, P<0.01], transferrin saturation(TSAT)[43.5(12.2-77.2)% vs 53.4(14.8-97.5)%, P <0.01]and serum ferritin(SF)were observed in iron overload group. No differences of labile cellular iron(LCI)and reactive oxygen species(ROS)were observed between two groups(P=0.88, P=0.06). As the results of clinical complication of iron overload, alanine aminotransferase(ALT)[25(3-158)U/L vs 16(5-80)U/L, P=0.03]and type B natriuretic peptide precursor(proBNP)[190(6-4281)ng/L vs 84(12-2 275)ng/L, P= 0.05]levels were increased in iron overload group. There was no significant difference in iron metabolism parameters between patients with refractory anemia(RARS)and non RARS patients(P>0.05). Both frequency and volume of RBC transfusion had a significant effect on all iron metabolism parameters(SI, TSAT and SF)(P <0.01)except LCI and ROS. Excluded the patients with history of blood transfusion and SF levels over 1 000 μg/L, higher levels of LCI were mainly observed in dysplastic erythropoiesis and increased bone marrow erythroblasts ratio groups(P<0.01, P<0.05). Conclusion: The main cause of iron overload in MDS is chronic transfusion therapy. Both frequency and intensity of transfusion regimen have a main effect on iron metabolism parameters. LCI levels are mainly increased in newly diagnosed patients with the abnormalities of iron metabolism and have a stronger association with dysplastic erythropoiesis and increased bone marrow erythroblasts ratio. As the toxic fraction of iron and its negative impact on MDS, iron overload monitoring and chelation treatment decision can also be supported by LCI.
Collapse
Affiliation(s)
- L L Song
- Department of Hematology, Shanghai No.6 People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Song LL, Yu JH. [Solicosis with one micorscopic polyangitis case complicated]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:540-541. [PMID: 27682495 DOI: 10.3760/cma.j.issn.1001-9391.2016.07.017] [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]
|
21
|
Abstract
The DNA-binding one zinc finger (Dof) family is a classic plant-specific zinc-finger transcription factor family, which is involved in many important processes, including seed maturation and germination, plant growth and development, and light responses. Investigation of the Medicago truncatula genome revealed 42 putative Dof genes, each of which holds one Dof domain. These genes were classified into four groups based on phylogenetic analysis, which are similar to the groups reported for Arabidopsis and rice. Based on genome duplication analysis, it was found that the MtDof genes were distributed on all chromosomes and had expanded through tandem gene duplication and segmental duplication events. Two main duplication regions were identified, one from tandem duplication and another from segmental duplication. By analyzing high-throughput sequencing data from M. truncatula, we found that most of the MtDof genes showed specific expression patterns in different tissues. According to cis-regulatory element analysis, these MtDof genes are regulated by different cis-acting motifs, which are important for the functional divergence of the MtDof genes in different processes. Thus, using genome-wide identification, evolution, and expression pattern analysis of the Dof genes in M. truncatula, our study provides valuable information for understanding the potential function of the Dof genes in regulating the growth and development of M. truncatula.
Collapse
Affiliation(s)
- Y J Shu
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, Heilongjiang, China
| | - L L Song
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, Heilongjiang, China
| | - J Zhang
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, Heilongjiang, China
| | - Y Liu
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, Heilongjiang, China
| | - C H Guo
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, Heilongjiang, China
| |
Collapse
|
22
|
Jiang L, Song LL, Wang H, Wang JL, Wang PP, Zhou HB, Zhang XL. Identification and functional characterization of a novel mutation P459H and a rare mutation R483W in the CYP21A2 gene in two Chinese patients with simple virilizing form of congenital adrenal hyperplasia. J Endocrinol Invest 2012; 35:485-9. [PMID: 21750395 DOI: 10.3275/7860] [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] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Steroid 21-hydroxylase deficiency (21-OHD) is the most common cause of congenital adrenal hyperplasia (CAH). Clinically, 21-OHD is categorized into saltwasting, simple-virilizing (SV), and non-classical (NC) forms. It is well recognized that a good correlation exists between genotype and clinical phenotype of CAH. AIM The aim of this study was to identify CYP21A2 gene mutations in 2 Chinese patients with SV CAH along with their parents and other family members. STUDY DESIGN AND RESULTS By direct sequencing the CYP21A2 gene, a novel mutation, P459H, was detected in 1 patient; and a previously described uncharacterized mutation, R483W, was found in another patient. The 21-hydroxylase activities were determined by measuring the converting rate of progesterone to 11-deoxycorticosterone in COS-7 cells overexpressed with these mutated proteins. Our results revealed significantly reduced enzyme activity in both mutants: residual activity of P459H and R483W towards progesterone was 6.8%±2.1 and 2.9%±1.5, respectively compared to that of the wild type. We also demonstrated the loss of 21-hydroxylase activities using a three-dimensional model of CYP21A2. CONCLUSION Both R483W and P459H mutations are confirmed to be related to NC CAH by in vitro functional study, with phenotype variance of R483W in Tunisian and Chinese patients. This study will aid in predicting disease severity and in facilitating family genetic counseling.
Collapse
Affiliation(s)
- L Jiang
- Department of Endocrine and Metabolism, Qilu Hospital of Shandong University, Wenhuaxilu 107, Jinan 250012, China.
| | | | | | | | | | | | | |
Collapse
|
23
|
Song LL, Peng Y, Yun J, Rizzo P, Chaturvedi V, Weijzen S, Kast WM, Stone PJB, Santos L, Loredo A, Lendahl U, Sonenshein G, Osborne B, Qin JZ, Pannuti A, Nickoloff BJ, Miele L. Notch-1 associates with IKKalpha and regulates IKK activity in cervical cancer cells. Oncogene 2008; 27:5833-44. [PMID: 18560356 DOI: 10.1038/onc.2008.190] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [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] [Received: 02/01/2007] [Revised: 04/30/2008] [Accepted: 05/12/2008] [Indexed: 02/03/2023]
Abstract
Notch-1 inhibits apoptosis in some transformed cells through incompletely understood mechanisms. Notch-1 can increase nuclear factor-kappa B (NF-kappaB) activity through a variety of mechanisms. Overexpression of cleaved Notch-1 in T-cell acute lymphoblastic leukemia cells activates NF-kappaB via interaction with the I kappa B kinase (IKK) signalosome. Concomitant activation of the Notch and NF-kappaB pathways has been described in a large series of cervical cancer specimens. Here, we show that wild-type, spontaneously expressed Notch-1 stimulates NF-kappaB activity in CaSki cervical cancer cells by associating with the IKK signalosome through IKKalpha. A significant fraction of tumor necrosis factor (TNF)-alpha-stimulated IkappaB kinase activity in CaSki cells is Notch-1-dependent. In addition, Notch-1 is found in the nucleus in association with IKKalpha at IKKalpha-stimulated promoters and is required for association of IKKalpha with these promoters under basal and TNF-alpha-stimulated conditions. Notch-1-IKKalpha complexes are found in normal human keratinocytes as well, suggesting that IKK regulation is a physiological function of Notch-1. Both Notch-1 and IKKalpha knockdown sensitize CaSki cells to cisplatin-induced apoptosis to equivalent extents. Our data indicate that Notch-1 regulates NF-kappaB in cervical cancer cells at least in part via cytoplasmic and nuclear IKK-mediated pathways.
Collapse
Affiliation(s)
- L L Song
- Breast Cancer Program, Cardinal Bernardin Cancer Center, Loyola University Chicago, Maywood, IL 60153, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Chang LC, Song LL, Park EJ, Luyengi L, Lee KJ, Farnsworth NR, Pezzuto JM, Kinghorn AD. Bioactive constituents of Thuja occidentalis. J Nat Prod 2000; 63:1235-1238. [PMID: 11000026 DOI: 10.1021/np0001575] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
An ethyl acetate-soluble extract of the combined leaves and twigs of Thuja occidentalis was found to inhibit 12-O-tetradecanoylphorbol 13-acetate (TPA)-induced ornithine decarboxylase (ODC) in cultured mouse epidermal ME 308 cells. Bioassay-guided fractionation of this extract led to the isolation of six active constituents (1-6), namely, (+)-7-oxo-13-epi-pimara-14,15-dien-18-oic acid (1), (+)-7-oxo-13-epi-pimara-8,15-dien-18-oic acid (2), (+)-isopimaric acid (3), (1S,2S,3R)-(+)-isopicrodeoxypodophyllotoxin (4), (-)-deoxypodophyllotoxin (5), and (-)-deoxypodorhizone (6). Compounds 1 and 4 are new natural products, and their structures and stereochemistry were determined using spectroscopic methods. Compounds 1-6 were evaluated for inhibition of the transformation of murine epidermal JB6 cells, inhibition of ornithine decarboxylase induction with murine epidermal ME 308 cells, and cytotoxic activity against KB cells.
Collapse
Affiliation(s)
- L C Chang
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, USA
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Abstract
[structure: see text] Three novel flavonoids, (+)-tephrorins A (1) and B (2) and (+)-tephrosone (3), were isolated from Tephrosia purpurea. Their structures were elucidated by NMR spectral analysis, and their absolute configurations were determined by Mosher ester methodology. Compounds 1 and 2 are flavanones containing an unusual tetrahydrofuran moiety. Compounds 1-3 were evaluated for their potential cancer chemopreventive properties using a cell-based quinone reductase induction assay.
Collapse
Affiliation(s)
- L C Chang
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 60612, USA
| | | | | | | | | | | |
Collapse
|
26
|
Ingólfsdóttir K, Kook Lee S, Bhat KP, Lee K, Chai HB, Kristinsson H, Song LL, Gills J, Gudmundsdóttir JT, Mata-Greenwood E, Jang MS, Pezzuto JM. Evaluation of selected lichens from iceland for cancer chemopreventive and cytotoxic activity. Pharm Biol 2000; 38:313-317. [PMID: 21214483 DOI: 10.1076/1388-0209(200009)3841-aft313] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Cancer chemopreventive effects of organic extracts from 29 species of lichens collected in Iceland were evaluated using a panel of in vitro bioassays whereby extracts were tested for potential to induce quinone reductase (QR) and differentiation of human promyelocytic leukemia (HL-60) cells, inhibit cyclooxygenase-1 (COX-1), phorbol ester-induced ornithine decarboxylase (ODC), aromatase and sulfatase, as well as for antioxidant, estrogenic/anti-estrogenic and antiproliferative activity. In addition, the extracts were tested for cytotoxicity against 12 cancer cell lines. The most significant results were exhibited by extracts from Xanthoria elegans and Alectoria nigricans , which respectively, induced QR activity (concentration to double activity = 4.8 µg/ml) and inhibited phorbol ester-induced ODC activity with mouse 308 cells in culture (IC 50 = 2.6 µg/ml). Moderate inhibition of [ 3 H]thymidine incorporation with HL-60 cells was exhibited by the Peltigera leucophlebia extract. Several extracts prevented estrogen formation from estrogen precursors by inhibiting the enzymatic activities of aromatase ( Sphaerophorus globosus , Cetrariella delisei , Melanelia hepatizon ) and sulfatase ( Cladonia gracilis , Sphaerophorus fragilis , S. globosus ). None of the extracts demonstrated significant cytotoxic effects with selected cell lines.
Collapse
|
27
|
Zhang Y, Song LL, Gu SZ, Lu SG, Zhou ZN. Inhibitory effects of estradiol on inward rectifier and delayed rectifier K+ currents in guinea pig ventricular myocytes. Zhongguo Yao Li Xue Bao 1999; 20:631-4. [PMID: 10678128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
AIM To study the effects of estradiol (Est) on inward rectifier K+ (IK1) and delayed rectifier K+ (IK) channels in isolated guinea pig ventricular myocytes. METHODS Using whole cell patch-clamp recording techniques. RESULTS Est 10 mumol.L-1 and 100 mumol.L-1 decreased the action potential duration, APD50, from (474 +/- 71) ms to (330 +/- 75) ms and (229 +/- 67) ms (n = 7 cells of 7 guinea pigs, P < 0.05), respectively. Est 100 mumol.L-1 also decreased APD90 from (587 +/- 60) ms to (418 +/- 79) ms (n = 7, P < 0.05). Est inhibited IK tail current (IK.tail) concentration-dependently. IK.tail was depressed 53% (n = 5, P < 0.05) at 10 mumol.L-1 and 80% (n = 5, P < 0.01) at 100 mumol.L-1 compared with control. Est > or = 10 mumol.L-1 blocked IK1. The maximal inhibition of inward current of IK1 occurred at -100 mV test potential was 49% (n = 5, P < 0.01) and outward current of IK1 at -40 mV was 72% (n = 5, P < 0.01). The reverse potential shifted negatively, from -70 to -76 mV. CONCLUSION Est possessed blocking effects on both IK1 and IK channels in guinea pig ventricular myocytes.
Collapse
Affiliation(s)
- Y Zhang
- Shanghai Institute of Physiology, Chinese Academy of Sciences, China
| | | | | | | | | |
Collapse
|
28
|
Song LL, Kosmeder JW, Lee SK, Gerhäuser C, Lantvit D, Moon RC, Moriarty RM, Pezzuto JM. Cancer chemopreventive activity mediated by 4'-bromoflavone, a potent inducer of phase II detoxification enzymes. Cancer Res 1999; 59:578-85. [PMID: 9973203] [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: 02/10/2023]
Abstract
Induction of phase II enzymes is an important mechanism of chemoprevention. In our search for novel cancer chemopreventive agents, 4'-bromoflavone (4'BF) was found to significantly induce quinone reductase (QR) activity in cultured murine hepatoma 1c1c7 cells (concentration to double activity: 10 nM) and effectively induce the alpha- and mu-isoforms of glutathione S-transferase in cultured H4IIE rat hepatoma cells with no observed toxicity. In short-term dietary studies, 4'BF was also shown to increase QR activity and glutathione levels in rat liver, mammary gland, colon, stomach, and lung in a dose-dependent manner. Induction mediated by 4'BF was bifunctional (induction of both phase I and phase II enzymes) and regulated at the transcriptional level, as revealed by transient transfection studies with plasmid constructs (pDTD-1097CAT, XRE-CAT, and ARE-CAT) and reverse transcription-PCR-based analysis of QR mRNA. In studies conducted with female Sprague Dawley rats, the effects of 4'BF on the relative induction levels of phase I and phase II enzyme activities were investigated in liver and mammary gland. Treatment with 4'BF and 7,12-dimethylbenz[a]anthracene (DMBA) or 4'BF alone did not significantly alter DMBA-induced cytochrome P4501A1 activity (phase I enzyme), but it significantly increased QR activity (phase II enzyme), compared with the DMBA treatment group. In addition, 4'BF was found to be a potent inhibitor of cytochrome P4501A1-mediated ethoxyresorufin-O-deethylase activity, with an IC50 of 0.86 microM. Furthermore, in studies conducted with cultured HepG2 or MCF-7 cells, 4'BF significantly reduced the covalent binding of metabolically activated benzo[a]pyrene to cellular DNA. On the basis of these results, a full-term cancer chemoprevention study was conducted with DMBA-treated female Sprague Dawley rats. Dietary administration of 4'BF (2000 and 4000 mg per kg of diet, from 1 week before to 1 week after DMBA) significantly inhibited the incidence and multiplicity of mammary tumors and greatly increased tumor latency. In summary, 4'BF can be viewed as a relatively simple, readily available, inexpensive compound that is a highly effective cancer chemopreventive agent. The full mechanism of action remains to be defined, but enhancement of detoxification pathways appears to be important.
Collapse
Affiliation(s)
- L L Song
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 60612, USA
| | | | | | | | | | | | | | | |
Collapse
|
29
|
Zhang Y, Hao YC, Song LL, Guo SM, Gu SZ, Lu SG. Effects of sex hormones on action potential and contraction of guinea pig papillary muscle. Zhongguo Yao Li Xue Bao 1998; 19:248-50. [PMID: 10375736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
AIM To study the effects of sex hormones, estradiol (Est), progesterone (Pro) and testosterone (Tes) on the action potential (AP) and contraction of guinea pig papillary muscle. METHODS Using conventional glass microelectrode and mechanical recording of myocardial contraction. RESULTS Est slowed down the maximal rate of rise of phase 0 (Vmax) of AP at low concentration (1 mumol.L-1). At 10 mumol.L-1 and above, Est also prolonged AP duration (APD50 and APD90), effective refractory period (ERP) and decreased the maximal isometric tension (Pmax) and velocity of tension development (dT/dt) of contraction. Tes (100 mumol.L-1 - 1 mmol.L-1) prolonged APD90 and ERP with decreased Pmax and dT/dt. But Pro (1 mumol.L-1 - 1 mmol.L-1) had no effects on both AP and contraction. CONCLUSION Est prolonged AP and depressed contraction of guinea pig papillary muscle.
Collapse
Affiliation(s)
- Y Zhang
- Department of Physiology, Hebei Medical University, Shijiazhuang, China.
| | | | | | | | | | | |
Collapse
|
30
|
Zhang Y, Gu SZ, Hao YC, Song LL, Guo SM, Lu SG. Effects of sodium pentobarbital on electric and mechanical activities of guinea pig papillary muscle. Zhongguo Yao Li Xue Bao 1996; 17:439-41. [PMID: 9863169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
AIM To study the effects of sodium pentobarbital (SP) on the action potential (AP) and contraction of guinea pig papillary muscle. METHODS Using conventional glass microelectrode and mechanical recording of myocardium contraction. RESULTS SP (> or = 10 mumol.L-1) prolonged the AP duration (APD) and effective refractory period (ERP), while amplitude (APA) and Vmax of phase 0 showed no changes. The effects of SP were abolished by pretreatment with cromakalim, an agonist of ATP-sensitive K+ channel. The maximal isometric tension (Pmax) and velocity of tension development (dT/dt) were decreased to 51% and 48% of control, respectively. The first postrest beat (B1) and second postrest beat (B2) were also depressed. CONCLUSION SP affected the action potential by reducing activities of the K+ channels and reduced the contraction of guinea pig myocardium.
Collapse
Affiliation(s)
- Y Zhang
- Department of Physiology, Hebei Medical University, Shijiazhuang, China
| | | | | | | | | | | |
Collapse
|
31
|
Xu XM, Ma WF, Song LL, Xu Q, Zhang JZ. Direct genotyping and prenatal diagnosis of beta-thalassemia in Chinese by polymerase chain reaction mediated restriction fragment length polymorphism method. Clin Biochem 1993; 26:497-503. [PMID: 7907284 DOI: 10.1016/0009-9120(93)80015-m] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The molecular basis of beta-thalassemia is predominantly point mutations in the beta-globin gene. Frameshift 41-42 (-CTTT), IVS-2 position 654 (C-->T) mutation, nonsense codon 17 (A-->T), TATA box position -28 (A-->G) mutation and frameshift 71-72 (+A) account for more than 95% of beta-thalassemia alleles in the population of South China. We have developed a polymerase chain reaction (PCR)-mediated restriction fragment length polymorphism (RFLP) method for the identification of these alleles. In this method, artificial mispairing bases in PCR-amplified products were created to distinguish normal from mutant alleles on the basis of RFLPs. The size of the five PCR-amplified DNA fragments that may potentially contain the above five types of mutations is 93 or 89 bp (codons 41-42), 221 bp (IVS-2 nt 654), 110 bp (codon 17), 123 bp (TATA box nt -28), and 97 or 98 bp (codons 71-72). After these fragments were digested with Hinc II, Mae III, Nhe I, EcoR I, and Dde I, respectively, the allele-specific RFLPs produced were analyzed by gel electrophoresis. DNA samples of 24 patients with the above five types of beta-thalassemia were investigated with the present method and allele-specific oligonucleotide (ASO) probing simultaneously. We used this method in the prenatal diagnosis of 14 Chinese families for beta-thalassemia. The results obtained by the present method correspond well with those by the ASO probe test.
Collapse
Affiliation(s)
- X M Xu
- Molecular Biology Laboratory, Nanfang Hospital, First Military Medical University, Guangzhou, People's Republic of China
| | | | | | | | | |
Collapse
|
32
|
Wang SG, Ren GQ, Xue H, Shen QY, Song LL, Yuan P. Cytogenetic study of 1,633 cases. Chin Med J (Engl) 1988; 101:231-6. [PMID: 3138079] [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: 01/04/2023] Open
|
33
|
Wang MZ, Liu JS, Song LL, Xiang BR, An DK. [Application of orthogonal function spectrophotometry to the determination of total diterpene orthoesters in yuanhua (Daphne genkwa Sieb. et Zucc.) root injection]. Yao Xue Xue Bao 1986; 21:119-23. [PMID: 3751590] [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: 01/07/2023]
|