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Sang S, Ba Y, Yang N. Longitudinal faster anxiety progression of GBA variant carriers in the early Parkinson's disease cohort. Front Neurosci 2024; 18:1353759. [PMID: 38327847 PMCID: PMC10847242 DOI: 10.3389/fnins.2024.1353759] [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: 12/11/2023] [Accepted: 01/02/2024] [Indexed: 02/09/2024] Open
Abstract
Objective Anxiety symptoms are prevalent neuropsychiatric manifestations in Parkinson's disease (PD) and impact the development of motor complications. Our aim was to evaluate the association of GBA variants with the anxiety development in early PD cohort. Methods This cohort study used data from the Parkinson Progression Marker Initiative. The primary outcome anxiety was assessed by State-Trait Anxiety Inventory (STAI). The association between GBA and longitudinal change in the STAI total score was examined using linear mixed-effects model, and the association between GBA and anxiety progression was examined using Cox survival analysis. Results A total of 385 patients with PD were included in this study, 39 of them were GBA variant carriers and 346 were idiopathic PD without GBA variants. Patients with GBA variants had faster annual increase in anxiety score (β = 0.44; 95% CI, 0.18 to 0.71; p < 0.001) and were at higher risk of anxiety progression (HR 1.87; 95% CI, 1.03 to 3.41; p = 0.03,). Higher baseline scores for Scales for Outcomes in Parkinson's Disease-Autonomic (SCOPA-AUT), which indicated the autonomic dysfunction, also independently predicted faster increase in anxiety score (β = 0.48; 95%CI, 0.19 to 0.69; p < 0.001) and higher incidence of anxiety development (HR = 1.05; 95% CI, 1.01 to 1.08; p = 0.008). Interpretation These findings suggest that longitudinal anxiety symptoms worsening was faster in PD patients who were GBA variant carriers and have dysautonomia, and this association was enhanced if they have both.
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Affiliation(s)
- Shushan Sang
- Department of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yunpeng Ba
- Department of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Nannan Yang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Sang S, Xing L. Automated Small Tumor Segmentation by a Template-Based Global Hierarchical Attention Method. Int J Radiat Oncol Biol Phys 2023; 117:e485. [PMID: 37785535 DOI: 10.1016/j.ijrobp.2023.06.1712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Accurate segmentation of tumors is significant for radiation therapy treatment planning and clinical decision-making. While deep convolutional neural network-based methods have found valuable applications in automatic medical segmentation, tumor segmentation, especially small tumor segmentation, remains challenging due to deficiencies of current deep learning in convolutional and pooling operations, which often results in the loss of small object information. This research proposes a global hierarchical attention-based method for accurate and automated segmentation of small tumors by exploiting the associations between small tumors and the feature maps of large tumors. MATERIALS/METHODS This study included 131 patients with liver cancer. The in-plane resolution of the patients' CTs is from 0.55 mm to 1.0 mm and slice spacing from 0.45 mm to 6.0 mm. We randomly selected 100 CT scans as the training set and others as the testing set. Each CT slice of the testing set was separated into groups according to tumor size as follows: 0.1-2.0, 2.1-5.0, 5.1-10.0, and 10.1-20.0 cm. The CT slice without tumor or tumor size > 20 cm were excluded. This work presents a tumor template-based hierarchical attention method to quantify the relation between small and large tumors by computing their feature maps. The relation of small-large tumors can compensate for the information loss of small tumors during the convolutional and pooling operations and improve the performance of small tumor segmentation. RESULTS Among 20,693 CT slices of the 31 testing patients, 3.0% CT slices with tumors ≤2 cm, 6.7% ≤5 cm, 10.6% ≤10 cm, and 13.4%≤20 cm. We compared our method with six widely used segmentation models. The results show our model outperforms other methods on all sizes of liver tumors, especially for small size tumors: For the 0.1-2.0 cm liver tumor, it achieved 8.4%, 10.0%, 11.3%, 9.1%, 10.9%, and 9.6% improvement compared to Unet, PAN, DeepLabV3, FPN, LinkNet, and PSPNet, respectively. CONCLUSION We found that the small-large tumors relation can significantly improve small tumor segmentation, which is valuable for treatment planning, and clinical decision-making. Our experimental results show that our method can significantly improve the accuracy of segmenting small liver tumors compared to existing deep-learning-based models. The method is quite general and can be extended to other types of tumor detection and segmentation. We discovered that the relationship between small and large tumors can significantly enhance the segmentation of small tumors, which has significant value for treatment planning and clinical decision-making. Our experiments demonstrate that our approach significantly improves the accuracy of small liver tumor segmentation compared to existing deep learning-based models. Our method is quite versatile and can be extended to other types of tumor detection and segmentation.
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Affiliation(s)
- S Sang
- Department of Radiation Oncology, Stanford University, Stanford, CA
| | - L Xing
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
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Yang N, Sang S, Peng T, Hu W, Wang J, Bai R, Lu H. Impact of GBA variants on longitudinal freezing of gait progression in early Parkinson's disease. J Neurol 2023; 270:2756-2764. [PMID: 36790548 DOI: 10.1007/s00415-023-11612-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 02/04/2023] [Accepted: 02/06/2023] [Indexed: 02/16/2023]
Abstract
BACKGROUND Freezing of gait (FOG) is a common disabling gait disturbance among patients with Parkinson's disease (PD), but the influence of genetic variants on the incidence of FOG has been poorly studied to date. OBJECTIVES We aimed to evaluate the association of GBA variants with the risk of FOG development in a large early PD cohort. METHODS This study included 371 early PD patients from the Parkinson's Progression Markers Initiative (PPMI) who were divided into a GBA variant carrier group (GBA-PD group, n = 44) and an idiopathic PD group without GBA variants (iPD group, n = 327). They were followed up for up to 5 years to examine the progression of FOG. The cumulative incidence of FOG and risk factors for FOG were assessed using Kaplan‒Meier and Cox regression analyses. RESULTS At baseline, the GBA-PD group had lower CSF β-amyloid 1-42 (Aβ42) levels and more severe motor and nonmotor symptoms than the iPD group. During the 5-year follow-up, the GBA-PD group had a higher incidence of FOG than the iPD group, and the FOG progression rate was related to GBA variant severity. In the multivariable Cox model without CSF Aβ42, GBA variants were significant predictors of future FOG, and the association remained significant after adding CSF Aβ42 to the model. In the subgroup analyses, the effect of GBA variants was not observed in the "low-level" group. However, in the "high-level" group, GBA variants independently increased the risk of FOG, and this association was stronger than the association with CSF Aβ42. CONCLUSION GBA variants are novel genetic risk factors for future FOG development in early PD patients. This association seemed to be mediated by both Aβ-dependent pathways and Aβ-independent pathways.
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Affiliation(s)
- Nannan Yang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
| | - Shushan Sang
- Department of Otolaryngology Head and Neck Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Tao Peng
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Wentao Hu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Jingtao Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Rong Bai
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Hong Lu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
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Liu Y, Wen J, Sang S, Mei L, He C, Jiang L, Huang S, Feng Y. Next-generation sequencing-based mutation analysis of genes associated with enlarged vestibular aqueduct in Chinese families. Eur Arch Otorhinolaryngol 2020; 277:3331-3339. [PMID: 32447495 DOI: 10.1007/s00405-020-06050-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 05/11/2020] [Indexed: 12/16/2022]
Abstract
OBJECTIVES The identification of gene mutations enables more appropriate genetic counseling and proper medical management for EVA patients. The purpose of this study was to validate the accuracy and sensitivity of our method for comprehensive mutation detection in EVA, and summarize these data to explore a more accurate and convenient genetic diagnosis method. METHODS A multiplex PCR sequencing panel was designed to capture the exons of three known EVA-associated genes (SLC26A4, KCNJ10, and FOXI1), and NGS was conducted in 17 Chinese families with EVA. RESULTS A total of 16 SLC26A4 variants were found in 21 probands with bilateral EVA, including three novel variants (c.416G>A, c.823G>A and c.1027G>C), which were not reported in the dbSNP, gnomAD database, and ClinVar databases. One patient carried a FOXI1 variant (heterozygous, c.214C>A) and one patient carried a KCNJ10 variant (heterozygous, c.1054C>A), both of which were novel variants. Biallelic potential pathogenic variants were detected in 21/21patient samples, leading to a purported diagnostic rate of 100%. All results were verified by Sanger sequencing. CONCLUSION This result supplemented the mutation spectrum of EVA, and supports that combined multiple PCR-targeted enrichment, and NGS is a valuable molecular diagnostic tool for EVA, and is suitable for clinical application.
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Affiliation(s)
- Yalan Liu
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, 410008, Hunan, China
| | - Jie Wen
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, 410008, Hunan, China
| | - Shushan Sang
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, 410008, Hunan, China
| | - Lingyun Mei
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, 410008, Hunan, China
| | - Chufeng He
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, 410008, Hunan, China
| | - Lu Jiang
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, 410008, Hunan, China
| | - Sida Huang
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, 410008, Hunan, China
| | - Yong Feng
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China. .,Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, 410008, Hunan, China.
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Liu Y, Sang S, Ling J, He C, Mei L, Feng Y. [Application of PCR reverse dot blot in non-syndromic deafness gene detection]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 34:153-157. [PMID: 32086922 PMCID: PMC10128405 DOI: 10.13201/j.issn.1001-1781.2020.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Indexed: 11/12/2022]
Abstract
Objective:To detect 20 common deafness gene mutations in non- syndromic deafness patients in China using PCR- RDB, and analyze and summarize the mutation data to explore the clinical value of this method. Method:The PCR- RDB and Sanger sequencing were used to detect 20 common mutations of four deafness genes(GJB2, GJB3, SLC26A4 and mtDNA) in 500 patients with non- syndromic hearing loss . The Sanger sequencing was used to compare the sensitivity, specificity, positive predictive value, negative predictive value, and total coincidence rate of the deafness mutation detected by PCR- RDB. Result:A total of 500 samples were detected. 147 wild- type samples, 81 homozygous mutant samples, 240 heterozygous mutant samples, 32 composite heterozygous mutant samples were detected using the PCR- RDB within the range of 20 gene mutations, which were identical to the Sanger sequencing results. GJB2 c.235delC and SLC26A4 c.919- 2 A>G are the most common hotspot mutations in this study, followed by mtDNA m. 1555 A>G. Compared with the Sanger sequencing method, the sensitivity, specificity, positive predictive value, negative predictive value, and total coincidence rate of the real- time fluorescence PCR melting curve method were 100%, and the Kappa value was one. Conclusion:PCR reverse dot-blot hybridization is a simple, rapid, sensitive and specific method for detecting 20 mutations of 4 common deafness genes in Chinese population, it is expected to be used in clinical detection of deafness genes in the future.
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Affiliation(s)
- Yalan Liu
- Department of Otolaryngology Head and Neck Surgery,Xiangya Hospital,Central South University,Changsha,410008,China.,Xiangya Hospital,Central South University,Province Key Laboratory of Otolaryngology Critical Diseases
| | - Shushan Sang
- Department of Otolaryngology Head and Neck Surgery,Xiangya Hospital,Central South University,Changsha,410008,China.,Xiangya Hospital,Central South University,Province Key Laboratory of Otolaryngology Critical Diseases
| | - Jie Ling
- Institute of Molecular Precision Medicine,Xiangya Hospital,Central South University
| | - Chufeng He
- Department of Otolaryngology Head and Neck Surgery,Xiangya Hospital,Central South University,Changsha,410008,China.,Xiangya Hospital,Central South University,Province Key Laboratory of Otolaryngology Critical Diseases
| | - Lingyun Mei
- Department of Otolaryngology Head and Neck Surgery,Xiangya Hospital,Central South University,Changsha,410008,China.,Xiangya Hospital,Central South University,Province Key Laboratory of Otolaryngology Critical Diseases
| | - Yong Feng
- Department of Otolaryngology Head and Neck Surgery,Xiangya Hospital,Central South University,Changsha,410008,China.,Xiangya Hospital,Central South University,Province Key Laboratory of Otolaryngology Critical Diseases
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Sun Q, Wang Q, Wang X, Ji X, Sang S, Shao S, Zhao Y, Xiang Y, Xue Y, Li J, Wang G, Lv M, Xue F, Qiu C, Du Y. Prevalence and cardiovascular risk factors of asymptomatic intracranial arterial stenosis: the Kongcun Town Study in Shandong, China. Eur J Neurol 2020; 27:729-735. [PMID: 31872951 DOI: 10.1111/ene.14144] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 12/19/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND PURPOSE This study was to investigate the prevalence and cardiovascular risk factors (CRFs) of asymptomatic intracranial atherosclerotic stenosis (aICAS) amongst middle-aged and older adults living in rural communities in China. METHODS This population-based study included 2019 subjects (aged ≥40 years, 52.3% women) who were free of stroke and living in rural communities in China. From October 2017 to May 2018, data on demographics, CRFs and health conditions were collected through face-to-face interviews, physical examination and laboratory tests. Asymptomatic ICAS was detected through a two-phase procedure: a screening phase with transcranial Doppler ultrasound, followed by a diagnostic phase with magnetic resonance angiography examination. Multivariable logistic regression models were used to analyse CRFs associated with aICAS. RESULTS Of the 2019 participants, aICAS was detected in 153 persons. The overall prevalence of aICAS was 7.6%, and the prevalence of moderate-to-severe aICAS was 5.0%. The multi-adjusted odds ratio (95% confidence interval) of aICAS associated with CRFs was 2.40 (1.56-3.69) for hypertension, 1.91 (1.32-2.76) for high hypersensitive C-reactive protein, 1.68 (1.14-2.49) for diabetes and 1.61 (1.08-2.41) for overweight or obesity. When these four CRFs were aggregated, compared with participants without any of these factors, the multi-adjusted odds ratios (95% confidence interval) of aICAS for persons concurrently having one, two and three or more of these factors were 1.14 (0.52-2.48), 2.91 (1.42-5.99) and 5.51 (2.64-11.50), respectively (P for linear trend <0.001). CONCLUSIONS Asymptomatic ICAS is common amongst rural-dwelling middle-aged and older Chinese people. Hypertension, diabetes, overweight or obesity and high hypersensitive C-reactive protein, especially when coexisting, are strongly associated with aICAS.
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Affiliation(s)
- Q Sun
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Q Wang
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - X Wang
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - X Ji
- Department of Biostatistics, School of Public Health, Shandong University, Jinan, China
| | - S Sang
- Department of Clinical Epidemiology, Qilu Hospital Affiliated to Shandong University, Jinan, China
| | - S Shao
- Department of Radiology, Shandong Medical Imaging Research Institute Affiliated to Shandong University, Jinan, China
| | - Y Zhao
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Y Xiang
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Y Xue
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - J Li
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - G Wang
- Department of Radiology, Shandong Medical Imaging Research Institute Affiliated to Shandong University, Jinan, China
| | - M Lv
- Department of Clinical Epidemiology, Qilu Hospital Affiliated to Shandong University, Jinan, China
| | - F Xue
- Department of Biostatistics, School of Public Health, Shandong University, Jinan, China
| | - C Qiu
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,Aging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet Stockholm University, Stockholm, Sweden
| | - Y Du
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
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Sang S, Ling J, Liu X, Mei L, Cai X, Li T, Li W, Li M, Wen J, Liu X, Liu J, Liu Y, Chen H, He C, Feng Y. Proband Whole-Exome Sequencing Identified Genes Responsible for Autosomal Recessive Non-Syndromic Hearing Loss in 33 Chinese Nuclear Families. Front Genet 2019; 10:639. [PMID: 31379920 PMCID: PMC6650584 DOI: 10.3389/fgene.2019.00639] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 06/18/2019] [Indexed: 11/22/2022] Open
Abstract
Autosomal recessive non-syndromic hearing loss (ARNSHL) is a highly heterogeneous disease involving more than 70 pathogenic genes. However, most ARNSHL families have small-sized pedigrees with limited genetic information, rendering challenges for the molecular diagnosis of these patients. Therefore, we attempted to establish a strategy for identifying deleterious variants associated with ARNSHL by applying proband whole-exome sequencing (proband-WES). Aside from desiring to improve molecular diagnostic rates, we also aimed to search for novel deafness genes shared by patients with similar phenotype, making up for the deficiency of small ARNSHL families. In this study, 48.5% (16/33) families were detected the pathogenic variants in eight known deafness genes, including 10 novel variants identified in TMPRSS3 (MIM 605551), MYO15A (MIM 602666), TMC1 (MIM 606706), ADGRV1 (MIM 602851), and PTPRQ (MIM 603317). Apart from six novel variants with a truncating effect (nonsense, deletion, insertion, and splice-site), four novel missense variants were not found in 200 unrelated control population by using Sanger sequencing. It is important to note that none of novel genes were shared across different pedigrees, indicating that a larger sample size might be needed. Proband-WES is a cost-effective and precise way of identifying causative variants in nuclear families with ARNSHL. This economical strategy may be appropriated as a clinical application to provide molecular diagnostics, genetic counseling, and individualized health maintenance measures for patients with ARNSHL at hearing clinics.
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Affiliation(s)
- Shushan Sang
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, China
| | - Jie Ling
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Institute of Molecular Precision Medicine, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Molecular Precision Medicine, Changsha, China
| | - Xuezhong Liu
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, FL, United States.,Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Lingyun Mei
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, China
| | - Xinzhang Cai
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, China
| | - Taoxi Li
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, China.,Hunan Jiahui Genetics Hospital, Changsha, China
| | - Wu Li
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, China
| | - Meng Li
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, China
| | - Jie Wen
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, China
| | - Xianlin Liu
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, China
| | - Jing Liu
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, China
| | - Yalan Liu
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, China
| | - Hongsheng Chen
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, China
| | - Chufeng He
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, China
| | - Yong Feng
- Department of Otolaryngology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Otolaryngology Major Diseases Research of Hunan Province, Changsha, China.,Hunan Jiahui Genetics Hospital, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
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8
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Li T, Feng Y, Liu Y, He C, Liu J, Chen H, Deng Y, Li M, Li W, Song J, Niu Z, Sang S, Wen J, Men M, Chen X, Li J, Liu X, Ling J. A novel ABHD12 nonsense variant in Usher syndrome type 3 family with genotype-phenotype spectrum review. Gene 2019; 704:113-120. [PMID: 30974196 DOI: 10.1016/j.gene.2019.04.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 10/20/2018] [Revised: 03/08/2019] [Accepted: 04/02/2019] [Indexed: 12/15/2022]
Abstract
Usher syndrome (USH) is a clinically common autosomal recessive disorder characterized by retinitis pigmentosa (RP) and sensorineural hearing loss with or without vestibular dysfunction. In this study, we identified a Hunan family of Chinese descent with two affected members clinically diagnosed with Usher syndrome type 3 (USH3) displaying hearing, visual acuity, and olfactory decline. Whole-exome sequencing (WES) identified a nonsense variant in ABHD12 gene that was confirmed to be segregated in this family by Sanger sequencing and exhibited a recessive inheritance pattern. In this family, two patients carried homozygous variant in the ABHD12 (NM_015600: c.249C>G). Mutation of ABHD12, an enzyme that hydrolyzes an endocannabinoid lipid transmitter, caused incomplete PHARC syndrome, as demonstrated in previous reports. Therefore, we also conducted a summary based on variants in ABHD12 in PHARC patients, and in PHARC patients showing that there was no obvious correlation between the genotype and phenotype. We believe that this should be considered during the differential diagnosis of USH. Our findings predicted the potential function of this gene in the development of hearing and vision loss, particularly with regard to impaired signal transmission, and identified a novel nonsense variant to expand the variant spectrum in ABHD12.
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Affiliation(s)
- Taoxi Li
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China; Center for Medical Genetics, Central South University, Changsha, Hunan 410008, China
| | - Yong Feng
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China; Center for Medical Genetics, Central South University, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Yalan Liu
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Chufeng He
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Jing Liu
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China
| | - Hongsheng Chen
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China
| | - Yuyuan Deng
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China
| | - Meng Li
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China
| | - Wu Li
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China
| | - Jian Song
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China
| | - Zhijie Niu
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China
| | - Shushan Sang
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China
| | - Jie Wen
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China
| | - Meichao Men
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China
| | - Xiaoya Chen
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Changsha, Hunan 410008, China
| | - Jiada Li
- Center for Medical Genetics, Central South University, Changsha, Hunan 410008, China
| | - Xuezhong Liu
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Department of Otolaryngology, University of Miami, Miller School of Medicine, Miami, FL 33136, USA
| | - Jie Ling
- Department of Otolaryngology-Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Institute of Molecular Precision Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.
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Deng Y, Sang S, Wen J, Liu Y, Ling J, Chen H, Cai X, Mei L, Chen X, Li M, Li W, Li T, He C, Feng Y. Reproductive guidance through prenatal diagnosis and genetic counseling for recessive hereditary hearing loss in high-risk families. Int J Pediatr Otorhinolaryngol 2018; 115:114-119. [PMID: 30368370 DOI: 10.1016/j.ijporl.2018.08.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 08/21/2018] [Accepted: 08/21/2018] [Indexed: 10/28/2022]
Abstract
OBJECTIVE To evaluate the accuracy and validity of our protocol for prenatal diagnosis and genetic counseling in high-risk families at a clinic. METHODS Fifteen unrelated families with recessive nonsyndromic hearing loss (NSHL) in their family history and a positive attitude towards prenatal diagnosis were recruited in the present study. According to genetic information for each family, Sanger sequencing, fluorescence polymerase chain reaction (PCR)-based congenital deafness gene detection kit and multiple PCR-based target gene capture and high-throughput sequencing were used. Genetic counseling was offered to all participating families by genetic counselors and otologists. Prenatal diagnosis was provided to families with detected pathogenic mutations and who were expected to participate in subsequent prenatal diagnosis. RESULTS In this study, confirmed pathogenic mutations were detected in eight families, who were defined as high-risk families. These families all participated in prenatal diagnosis with positive attitudes. One novel variant (c.1687dupA) in the SLC264 gene was detected in a family. Through genetic counseling, the recurrence probability of NSHL in fetuses was 25% in six families, 0% in one family, and 50% in one family. The results of fetal DNA detection showed that one fetal variant was wild type, three were heterozygous mutations in SLC26A4, and one was a compound heterozygous mutation in SLC26A4. Two variants were heterozygous mutations in GJB2, and one was a homozygous mutation in GJB2. According to the test results for fetal DNA, prenatal diagnosis found that six fetuses had normal hearing, whereas two fetuses suffered from NSHL. After birth, six infants predicted to have normal hearing passed a newborn hearing screening test and two infants predicted to have NSHL were diagnosed with NSHL and received cochlear implants. CONCLUSION Our protocol for prenatal diagnosis and genetic counseling provides detailed information that can assist couples in high-risk families in preparing for infant arrival and future family planning. For the affected neonates, prenatal diagnosis and genetic counseling achieve an "early screening, early diagnosis, early intervention" strategy.
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Affiliation(s)
- Yuyuan Deng
- Department of Otolaryngology, Xiangya Hospital, Central South University, Center for Medical Genetics, Central South University, Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Xiangya Hospital, Central South University, China.
| | - Shushan Sang
- Department of Otolaryngology, Xiangya Hospital, Central South University, Center for Medical Genetics, Central South University, Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Xiangya Hospital, Central South University, China.
| | - Jie Wen
- Department of Otolaryngology, Xiangya Hospital, Central South University, China.
| | - Yalan Liu
- Department of Otolaryngology, Xiangya Hospital, Central South University, Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Xiangya Hospital, Central South University, China.
| | - Jie Ling
- Institute of Precision Medicine, Xiangya Hospital, Central South University, China.
| | - Hongsheng Chen
- Department of Otolaryngology, Xiangya Hospital, Central South University, Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Xiangya Hospital, Central South University, China.
| | - Xinzhang Cai
- Department of Otolaryngology, Xiangya Hospital, Central South University, China.
| | - Lingyun Mei
- Department of Otolaryngology, Xiangya Hospital, Central South University, Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Xiangya Hospital, Central South University, China.
| | - Xiaoya Chen
- Department of Otolaryngology, Xiangya Hospital, Central South University, Center for Medical Genetics, Central South University, Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Xiangya Hospital, Central South University, China.
| | - Meng Li
- Center for Medical Genetics, Central South University, China.
| | - Wu Li
- Center for Medical Genetics, Central South University, China.
| | - Taoxi Li
- Center for Medical Genetics, Central South University, China.
| | - Chufeng He
- Department of Otolaryngology, Xiangya Hospital, Central South University, China.
| | - Yong Feng
- Department of Otolaryngology, Xiangya Hospital, Central South University, Center for Medical Genetics, Central South University, Key Laboratory of Otolaryngology Major Disease Research of Hunan Province, Xiangya Hospital, Central South University, China.
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10
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Li W, Sun J, Ling J, Li J, He C, Liu Y, Chen H, Men M, Niu Z, Deng Y, Li M, Li T, Wen J, Sang S, Li H, Wan Z, Richard EM, Chapagain P, Yan D, Liu XZ, Mei L, Feng Y. ELMOD3, a novel causative gene, associated with human autosomal dominant nonsyndromic and progressive hearing loss. Hum Genet 2018; 137:329-342. [PMID: 29713870 DOI: 10.1007/s00439-018-1885-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 04/16/2018] [Indexed: 11/26/2022]
Abstract
Autosomal dominant nonsyndromic hearing loss (ADNSHL) is a highly genetically heterogeneous disorder. Up to date only approximately 37 ADNSHL-causing genes have been identified. The goal of this study was to determine the causative gene in a five-generation Chinese family with ADNSHL. A Chinese family was ascertained. Simultaneously, two affected individuals and one normal hearing control from the family were analyzed by whole exome capture sequencing. To assess the functional effect of the identified variant, in-vitro studies were performed. novel missense variant, c.512A>G (p.His171Arg) in exon 8 of the ELMO domain-containing 3 (ELMOD3) gene, was identified as a causative variant in this family affected by late-onset and progressive ADNSHL. The variant was validated by Sanger sequencing and found to co-segregate with the phenotype within the pedigree and was absent in 500 ethnically matched unrelated normal hearing control subjects. To our knowledge, this is the first report of a family with ADNSHL caused by ELMOD3 mutation. Western blots and immunofluorescence staining demonstrated that p.His171Arg resulted in abnormal expression levels of ELMOD3 and abnormal subcellular localization. Furthermore, the analysis of the stability of the wild-type (WT) and mutant ELMOD3 protein shows that the decay of p.His171Arg is faster than that of the WT, suggesting a shorter halflife of the c.512A > G variant. A novel variant in the ELMOD3 gene, encoding a member of the engulfment and cell motility (ELMO) family of GTPase-activating proteins, was identified for the first time as responsible for ADNSHL.
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Affiliation(s)
- Wu Li
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Jie Sun
- Department of Otolaryngology, The Eight Affiliated Hospital, Sun Yat-sen University, 3025 Shennan Middle Road, Shenzhen, Guangdong, China
| | - Jie Ling
- Institute of Precision Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China
| | - Jiada Li
- Center for Medical Genetics, Central South University, 110 Xiangya Road, Changsha, Hunan, China
- School of Life Sciences, Central South University of China, 110 Xiangya Road, Changsha, Hunan, China
| | - Chufeng He
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Yalan Liu
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Hongsheng Chen
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Meichao Men
- Health Management Center, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China
| | - Zhijie Niu
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Yuyuan Deng
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Meng Li
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Taoxi Li
- Center for Medical Genetics, Central South University, 110 Xiangya Road, Changsha, Hunan, China
- School of Life Sciences, Central South University of China, 110 Xiangya Road, Changsha, Hunan, China
| | - Jie Wen
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Shushan Sang
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China
| | - Haibo Li
- Department of Ophthalmology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China
| | - Zhengqing Wan
- Center for Medical Genetics, Central South University, 110 Xiangya Road, Changsha, Hunan, China
- School of Life Sciences, Central South University of China, 110 Xiangya Road, Changsha, Hunan, China
| | - Elodie M Richard
- Department of Otorhinolaryngology Head and Neck Surgery, School of Medicine, University of Maryland, Baltimore, MD, USA
| | - Prem Chapagain
- Department of Physics, Florida International University, Miami, Florida, USA
- Biomolecular Sciences Institute, Florida International University, Miami, FL, USA
| | - Denise Yan
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, USA
| | - Xue Zhong Liu
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China
- Department of Otolaryngology, University of Miami Miller School of Medicine, Miami, USA
- Dr. John T. Macdonald Foundation, Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - Lingyun Mei
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China.
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China.
| | - Yong Feng
- Department of Otolaryngology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, China.
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, Hunan, China.
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11
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Zhang C, Zhu J, Zhang J, Li H, Zhao Z, Liao Y, Wang X, Su J, Sang S, Yuan X, Liu Q. Corrigendum to "Neuroprotective and anti-apoptotic effects of valproic acid on adult rat cerebral cortex through ERK and Akt signaling pathway at acute phase of traumatic brain injury" [Brain Res.1555 (2014, Mar. 25) 1-9]. Brain Res 2016; 1650:283. [PMID: 27590472 DOI: 10.1016/j.brainres.2016.08.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Chi Zhang
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Jie Zhu
- Department of Neurosurgery, 101th Hospital of PLA, Rescue Center of Craniocerebral Injuries of PLA, Wuxi, Jiangsu 214044, PR China
| | - Jing Zhang
- Department of Otorhinolaryngology, Head and Neck Surgery, Lanzhou General Hospital of Lanzhou Military Command, Lanzhou, Gansu 730050, PR China
| | - Haoyu Li
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Zijin Zhao
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Yiwei Liao
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Xiangyu Wang
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Jun Su
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Shushan Sang
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Xianrui Yuan
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China.
| | - Qing Liu
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China.
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12
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Peng F, Li J, Guo T, Yang H, Li M, Sang S, Li X, Desiderio DM, Zhan X. Nitroproteins in Human Astrocytomas Discovered by Gel Electrophoresis and Tandem Mass Spectrometry. J Am Soc Mass Spectrom 2015; 26:2062-76. [PMID: 26450359 DOI: 10.1007/s13361-015-1270-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 08/20/2015] [Accepted: 09/01/2015] [Indexed: 05/17/2023]
Abstract
Protein tyrosine nitration is involved in the pathogenesis of highly fatal astrocytomas, a type of brain cancer. To understand the molecular mechanisms of astrocytomas and to discover new biomarkers/therapeutic targets, we sought to identify nitroproteins in human astrocytoma tissue. Anti-nitrotyrosine immunoreaction-positive proteins from a high-grade astrocytoma tissue were detected with two-dimensional gel electrophoresis (2DGE)-based nitrotyrosine immunoblots, and identified with liquid chromatography-tandem mass spectrometry (LC-MS/MS). Fifty-seven nitrotyrosine immunopositive protein spots were detected. A total of 870 proteins (nitrated and non-nitrated) in nitrotyrosine-immunopositive 2D gel spots were identified, and 18 nitroproteins and their 20 nitrotyrosine sites were identified with MS/MS analysis. These nitroproteins participate in multiple processes, including drug-resistance, signal transduction, cytoskeleton, transcription and translation, cell proliferation and apoptosis, immune response, phenotypic dedifferentiation, cell migration, and metastasis. Among those nitroproteins that might play a role in astrocytomas was nitro-sorcin, which is involved in drug resistance and metastasis and might play a role in the spread and treatment of an astrocytoma. Semiquantitative immune-based measurements of different sorcin expressions were found among different grades of astrocytomas relative to controls, and a semiquantitative increased nitration level in high-grade astrocytoma relative to control. Nitro-β-tubulin functions in cytoskeleton and cell migration. Semiquantitative immunoreactivity of β-tubulin showed increased expression among different grades of astrocytomas relative to controls and semiquantitatively increased nitration level in high-grade astrocytoma relative to control. Each nitroprotein was rationalized and related to the corresponding functional system to provide new insights into tyrosine nitration and its potential role in the pathogenesis of astrocytoma formation. Graphical Abstract ᅟ.
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Affiliation(s)
- Fang Peng
- Key Laboratory of Cancer Proteomics of Chinese Ministry of Health, Xiangya Hospital, Central South University, Hunan, 410008, People's Republic of China
- Hunan Engineering Laboratory for Structural Biology and Drug Design, Xiangya Hospital, Central South University, Hunan, 410008, People's Republic of China
- State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Jianglin Li
- Molecular Science and Biomedicine Laboratory, State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, Hunan, 410018, People's Republic of China
| | - Tianyao Guo
- Key Laboratory of Cancer Proteomics of Chinese Ministry of Health, Xiangya Hospital, Central South University, Hunan, 410008, People's Republic of China
- Hunan Engineering Laboratory for Structural Biology and Drug Design, Xiangya Hospital, Central South University, Hunan, 410008, People's Republic of China
- State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Haiyan Yang
- Key Laboratory of Cancer Proteomics of Chinese Ministry of Health, Xiangya Hospital, Central South University, Hunan, 410008, People's Republic of China
- Hunan Engineering Laboratory for Structural Biology and Drug Design, Xiangya Hospital, Central South University, Hunan, 410008, People's Republic of China
- State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
- Department of Lung Cancer and Gastroenterology, Hunan Cancer Hospital, Changsha, Hunan, 410013, People's Republic of China
| | - Maoyu Li
- Key Laboratory of Cancer Proteomics of Chinese Ministry of Health, Xiangya Hospital, Central South University, Hunan, 410008, People's Republic of China
- Hunan Engineering Laboratory for Structural Biology and Drug Design, Xiangya Hospital, Central South University, Hunan, 410008, People's Republic of China
- State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Shushan Sang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Xuejun Li
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Dominic M Desiderio
- The Charles B. Stout Neuroscience Mass Spectrometry Laboratory, Department of Neurology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38163, USA
| | - Xianquan Zhan
- Key Laboratory of Cancer Proteomics of Chinese Ministry of Health, Xiangya Hospital, Central South University, Hunan, 410008, People's Republic of China.
- Hunan Engineering Laboratory for Structural Biology and Drug Design, Xiangya Hospital, Central South University, Hunan, 410008, People's Republic of China.
- State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China.
- The State Key Laboratory of Medical Genetics, Central South University, Changsha, Hunan, 410008, People's Republic of China.
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13
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Zhang C, Zhu J, Zhang J, Li H, Zhao Z, Liao Y, Wang X, Su J, Sang S, Yuan X, Liu Q. Neuroprotective and anti-apoptotic effects of valproic acid on adult rat cerebral cortex through ERK and Akt signaling pathway at acute phase of traumatic brain injury. Brain Res 2014; 1555:1-9. [PMID: 24508577 DOI: 10.1016/j.brainres.2014.01.051] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [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: 08/17/2013] [Revised: 01/27/2014] [Accepted: 01/29/2014] [Indexed: 01/06/2023]
Abstract
Mood stabilizer valproic acid (VPA), a widely used antiepileptic drug that has been demonstrated neuroprotective effect against various insults through multiple signaling pathways. The role of VPA in traumatic brain injury (TBI) remains unclear. In the present study, we investigated the neuroprotective potency of VPA for protection against TBI in adult rats, focusing on studying signaling mediators of two well characterized pro-survival molecules, extracellular signal-regulated protein kinase (ERK) and Akt. We found that treatment of VPA after TBI significantly attenuated brain edema, reduced contusion volume and the rate of neuronal apoptosis. The treatment also partly blocked an increase in capase-3 activity. VPA markedly up-regulated the activity of ERK and Akt expression. Moreover, treatment with either PD98059, an ERK inhibitor and/or LY294002, an Akt inhibitor, attenuated the neuroprotection of VPA against TBI to varying degrees. Taken together, these results demonstrated that treatment with VPA after TBI could be neuroprotective via activation of ERK and Akt signaling pathways.
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Affiliation(s)
- Chi Zhang
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Jie Zhu
- Department of Neurosurgery, 101th Hospital of PLA, Rescue Center of Craniocerebral Injuries of PLA, Wuxi, Jiangsu 214044, PR China
| | - Jing Zhang
- Department of Otorhinolaryngology, Head and Neck Surgery, Lanzhou General Hospital of Lanzhou Military Command, Lanzhou, Gansu 730050, PR China
| | - Haoyu Li
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Zijin Zhao
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Yiwei Liao
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Xiangyu Wang
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Jun Su
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Shushan Sang
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China
| | - Xianrui Yuan
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China.
| | - Qing Liu
- Department of Neurosurgery, Xiangya Hospital, Central-South University, Changsha, Hunan 410008, PR China.
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14
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Maness L, Goktepe I, Chen H, Ahmedna M, Sang S. Impact of Phytolacca americana
Extracts on Gene Expression of Colon Cancer Cells. Phytother Res 2013; 28:219-23. [DOI: 10.1002/ptr.4979] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 02/13/2013] [Accepted: 02/13/2013] [Indexed: 01/07/2023]
Affiliation(s)
- L. Maness
- North Carolina Agricultural and Technical State University; Department of Family and Consumer Sciences, Food and Nutritional Sciences Program; Greensboro NC 27411 USA
| | - I. Goktepe
- North Carolina Agricultural and Technical State University; Department of Family and Consumer Sciences, Food and Nutritional Sciences Program; Greensboro NC 27411 USA
| | - H. Chen
- North Carolina Agricultural and Technical State University; Center of Excellence in Post-Harvest Technologies, North Carolina Research Campus; Kannapolis NC 28081 USA
| | - M. Ahmedna
- North Carolina Agricultural and Technical State University; Center of Excellence in Post-Harvest Technologies, North Carolina Research Campus; Kannapolis NC 28081 USA
| | - S. Sang
- North Carolina Agricultural and Technical State University; Center of Excellence in Post-Harvest Technologies, North Carolina Research Campus; Kannapolis NC 28081 USA
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Jhoo JW, Sang S, He K, Cheng X, Zhu N, Stark RE, Zheng QY, Rosen RT, Ho CT. Characterization of the triterpene saponins of the roots and rhizomes of blue cohosh (Caulophyllum thalictroides). J Agric Food Chem 2001; 49:5969-5974. [PMID: 11743794 DOI: 10.1021/jf010814e] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Seven triterpene saponins were isolated from n-butanol fractions of blue cohosh (Caulophyllum thalictroides) roots and rhizomes. Their structures were established by spectral ((1)H NMR, (13)C NMR, 2D-NMR, and APCI-MS) techniques and chemical reactions as hederagenin 3-O-alpha-L-arabinopyranoside (1); caulophyllogenin 3-O-alpha-L-arabinopyranoside (2); hederagenin 3-O-beta-D-glucopyranosyl-(1-->2)-alpha-L-arabinopyranoside (3); 3-O-alpha-L-arabinopyranosyl-hederagenin 28-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranoside (4); 3-O-alpha-L-arabinopyranosyl- caulophyllogenin 28-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranoside (5); 3-O-beta-D-glucopyranosyl-(1-->2)-alpha-L-arabinopyranosyl- echinocystic acid 28-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranoside (6); 3-O-beta-D-glucopyranosyl-(1-->2)-alpha-L-arabinopyranosyl-hederagenin 28-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranoside (7). All seven compounds were identified in this species for the first time.
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Affiliation(s)
- J W Jhoo
- Department of Food Science and Center for Advanced Food Technology, Rutgers University, 65 Dudley Road, New Brunswick, New Jersey, 08901, USA
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16
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Zhu N, Kikuzaki H, Sheng S, Sang S, Rafi MM, Wang M, Nakatani N, DiPaola RS, Rosen RT, Ho CT. Furanosesquiterpenoids of Commiphora myrrha. J Nat Prod 2001; 64:1460-1462. [PMID: 11720534 DOI: 10.1021/np010072j] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
An investigation on the gum exudates of Commiphora myrrha has led to the isolation of six sesquiterpenoids. On the basis of spectroscopic data interpretation, they were determined as two new furanosesquiterpenoids, rel-1S,2S-epoxy-4R-furanogermacr-10(15)-en-6-one (1) and rel-2R-methyl-5S-acetoxy-4R-furanogermacr-1(10)Z-en-6-one (2), and four known furanosesquiterpenoids, rel-3R-methoxy-4S-furanogermacra-1E,10(15)-dien-6-one (3), rel-2R-methoxy-4R-furanogermacr-1(10)E-en-6-one (4), furanogermacra-1(10)Z,4Z-dien-6-one, and curzerenone [6,7-dihydro-5beta-isopropenyl-3,6beta-dimethyl-6-vinylbenzofuran-4(5H)-one]. This is the first report of the relative stereochemistry for the known compounds 3 and 4. Compound 1 exhibited weak cytotoxic activity against a MCF-7 breast tumor cell line in a clonogenic assay, while the other five compounds were inactive in this assay.
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MESH Headings
- Antineoplastic Agents, Phytogenic/chemistry
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/pharmacology
- Breast Neoplasms
- Burseraceae/chemistry
- Chromatography, Thin Layer
- Drugs, Chinese Herbal/chemistry
- Drugs, Chinese Herbal/isolation & purification
- Drugs, Chinese Herbal/pharmacology
- Female
- Humans
- Molecular Conformation
- Molecular Structure
- Nuclear Magnetic Resonance, Biomolecular
- Plants, Medicinal/chemistry
- Sesquiterpenes/chemistry
- Sesquiterpenes/isolation & purification
- Sesquiterpenes/pharmacology
- Sesquiterpenes, Germacrane
- Stereoisomerism
- Tumor Cells, Cultured/drug effects
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Affiliation(s)
- N Zhu
- Department of Food Science, Rutgers University, New Brunswick, New Jersey 08901, USA
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17
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Abstract
Three new spirostanol saponins have been isolated from the seeds of Allium tuberosum. On the basis of acid hydrolysis and comprehensive spectroscopic analysis, their structures were established as tuberoside J, (25R)-5alpha-spirostan-2alpha,3beta,27-triol 3-O-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-glucopyranoside; tuberoside K, (25R)-5alpha-spirostan-2alpha,3beta,27-triol 3-O-alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1-->4)]-beta-D-glucopyranoside; and tuberoside L, 27-O-beta-D-glucopyranosyl-(25R)-5alpha-spirostan-2alpha,3beta,27-triol 3-O-alpha-D-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1-->4)]-beta-D-glucopyranoside.
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Affiliation(s)
- S Sang
- Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, People's Republic of China
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18
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Sang S, Cheng X, Zhu N, Stark RE, Badmaev V, Ghai G, Rosen RT, Ho CT. Flavonol glycosides and novel iridoid glycoside from the leaves of Morinda citrifolia. J Agric Food Chem 2001; 49:4478-4481. [PMID: 11559157 DOI: 10.1021/jf010492e] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
One new iridoid glycoside and five known flavonol glycosides have been isolated from the leaves of Morinda citrifolia. The new iridoid exists as an epimeric mixture in solution. Complete assignments of the proton and carbon chemical shifts for the individual epimers were accomplished on the basis of high-resolution 1D and 2D NMR data. Their antioxidative activities were measured. All of these compounds showed DPPH free radical scavenging activity at the concentration of 30 microM.
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Affiliation(s)
- S Sang
- Department of Food Science and Center for Advanced Food Technology, Rutgers University, 65 Dudley Road, New Brunswick, New Jersey 08901-8520, USA
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19
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Liu G, Bode A, Ma WY, Sang S, Ho CT, Dong Z. Two novel glycosides from the fruits of Morinda citrifolia (noni) inhibit AP-1 transactivation and cell transformation in the mouse epidermal JB6 cell line. Cancer Res 2001; 61:5749-56. [PMID: 11479211] [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: 02/20/2023]
Abstract
The fruit juice of Morinda citrifolia (noni), a plant originally grown in the Hawaiian and Tahitian islands, has long been used by islanders to treat diseases, including cancer. Two novel glycosides, 6-O-(beta-D-glucopyranosyl)-1-O-octanoyl-beta-D-glucopyranose and asperulosidic acid, extracted from the juice of noni fruits, were used to examine their effects on 12-O-tedtradecanoylphorbol-13-acetate (TPA)- and epidermal growth factor (EGF)-induced AP-1 transactivation and cell transformation in mouse epidermal JB6 cells. The results indicated that both compounds were effective in suppressing TPA- or EGF-induced cell transformation and associated AP-1 activity. TPA- or EGF-induced phosphorylation of c-Jun, but not extracellular signal-regulated kinases or p38 kinases, was also blocked by the compounds, indicating that c-Jun N-terminal kinases were critical in mediating TPA- or EGF-induced AP-1 activity and subsequent cell transformation in JB6 cells.
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Affiliation(s)
- G Liu
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA
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20
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Krueger M, Nauck MS, Sang S, Hentschel R, Wieland H, Berner R. Cord blood levels of interleukin-6 and interleukin-8 for the immediate diagnosis of early-onset infection in premature infants. Biol Neonate 2001; 80:118-23. [PMID: 11509811 DOI: 10.1159/000047130] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Cytokine plasma levels are suggested to be sensitive indicators of neonatal sepsis, but conventional assays are time consuming. This study aimed at evaluating the significance of cord blood levels of interleukin (IL)-6 and IL-8 determined by a fully automated random access assay within 90 min of admission to predict systemic bacterial infection. PATIENTS AND METHODS Cord blood levels of IL-6 and IL-8 were determined in 71 mature and 100 premature infants by a chemiluminescence assay (Immulite). Patients were divided into four groups according to a clinical and laboratory scoring system. Group A: documented early-onset infection; group B: infection possible; group C: infection unlikely, and group D: healthy newborns. RESULTS Median IL-6 levels in the subgroup of premature newborns were as follows: group A, 1,920 pg/ml (5-95% confidence interval 308-4,660 pg/ml); group B, 50 (15-102) pg/ml; group C, 21 (12-71) pg/ml, and group D, 8 (6-11) pg/ml. For IL-8, median levels for groups A-D were 289 (226-514) pg/ml, 87 (40-107) pg/ml, 44 (33-98) pg/ml and 21 (16-25) pg/ml, respectively. The difference between group A and the other groups was highly significant (IL-6 p < 0.0001, IL-8 p < 0.001). At a cut-off of 80 pg/ml, the sensitivity of IL-6 for the diagnosis of sepsis was 96% (specificity 95%). For IL-8 (cut-off 90 pg/ml), the sensitivity was 87% (specificity 94%). CONCLUSION In premature infants, the diagnosis of an early-onset infection can be established or ruled out with a high level of confidence by measuring IL-6 or IL-8 levels from cord blood using a random access chemiluminescence assay.
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Affiliation(s)
- M Krueger
- University Children's Hospital, University of Freiburg, Germany.
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21
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Sang S, He K, Liu G, Zhu N, Cheng X, Wang M, Zheng Q, Dong Z, Ghai G, Rosen RT, Ho CT. A new unusual iridoid with inhibition of activator protein-1 (AP-1) from the leaves of Morinda citrifolia L. Org Lett 2001; 3:1307-9. [PMID: 11348221 DOI: 10.1021/ol0156648] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[structure in text] From the leaves of Morinda citrifolia, a new unusual iridoid, named citrifolinoside (1), showing significant inhibition of UVB-induced Activator Protein-1 (AP-1) activity in cell cultures, has been isolated. Its structure was elucidated on the basis of detailed high-field 1D and 2D spectral analysis.
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Affiliation(s)
- S Sang
- Department of Food Science and Center for Advanced Food Technology, Rutgers University, 65 Dudley Road, New Brunswick, New Jersey 08901-8520, USA.
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22
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Sang S, Cheng X, Zhu N, Wang M, Jhoo JW, Stark RE, Badmaev V, Ghai G, Rosen RT, Ho CT. Iridoid glycosides from the leaves of Morinda citrifolia. J Nat Prod 2001; 64:799-800. [PMID: 11421748 DOI: 10.1021/np010011l] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A new iridoid glucoside (1), named citrifolinoside A, was isolated from the leaves of Morinda citrifolia along with the known iridoids asperuloside and asperulosidic acid. The structure of 1 was established by interpretation and full assignments of NMR spectroscopic data.
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Affiliation(s)
- S Sang
- Department of Food Science and Center for Advanced Food Technology, Rutgers University, 65 Dudley Road, New Brunswick, New Jersey 08901-8520, USA
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23
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Meng X, Lee MJ, Li C, Sheng S, Zhu N, Sang S, Ho CT, Yang CS. Formation and identification of 4'-O-methyl-(-)-epigallocatechin in humans. Drug Metab Dispos 2001; 29:789-93. [PMID: 11353745] [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: 04/16/2023] Open
Abstract
The possible beneficial effects of tea consumption have attracted a great deal of attention. Many of the biological effects have been attributed to tea catechins, but the metabolic fate of these compounds is not clear. In the present study, a major metabolite observed in human blood and urine samples after green tea administration was identified as a O-methylated derivative of (-)-epigallocatechin (EGC) by comparison with products from chemical and enzymatic O-methylation of EGC. The structure of this metabolite was elucidated as 4'-O-methyl-(-)-epigallocatechin (4'-O-MeEGC) by (1)H and (13)C NMR and heteronuclear multiple bond connectivity experiment. The human plasma level of 4'-O-MeEGC reached its peak value within the first 2 h following tea ingestion. Its maximum concentration was 4 to 6 times higher than that of EGC. The half-lives of EGC and 4'-O-MeEGC in the blood were 1.02 +/- 0.07 and 4.39 +/- 1.14 h, respectively. The amount of 4'-O-MeEGC excreted in urine was about 3 times higher than that of EGC, and 88% of 4'-O-MeEGC was excreted in urine within 8 h. The present structural information and concentration-time profile of this metabolite provide the basis for understanding the biotransformation of EGC and for future elucidation of its biological activities.
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Affiliation(s)
- X Meng
- Laboratory for Cancer Research, Rutgers, The State University of New Jersey, Piscataway 08854-8020, USA
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24
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Abstract
Four new steroidal saponins, 26-O-beta-D-glucopyranosyl-(25S,20R)-20-O-methyl-5alpha-furost-22(23)-en-2alpha,3beta,20,26-tetraol 3-O-alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1-->4)]-beta-D-glucopyranoside (1); 26-O-beta-D-glucopyranosyl-(25S,20R)-5alpha-furost-22(23)-en-2alpha,3beta,20,26-tetraol 3-O-alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L- rhamnopyranosyl-(1-->4)]-beta-D-glucopyranoside (2); 26-O-beta-D-glucopyranosyl-(25S,20S)-5alpha-furost-22(23)-en-2alpha,3beta,20,26-tetraol 3-O-alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L- rhamnopyranosyl-(1-->4)]-beta-D-glucopyranoside (3); and 26-O-beta-D-glucopyranosyl-(25S,20S)-5alpha-furost-22(23)-en-3beta,20,26-triol 3-O-alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1-->4)]-beta-D-glucopyranoside (4), have been isolated from the seeds of Allium tuberosum. Their structures were established by spectroscopic studies such as MS, IR, NMR, and 2D-NMR and the results of acid hydrolysis and named tuberosides F, G, H, and I, respectively.
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Affiliation(s)
- S Sang
- Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, People's Republic of China
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25
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Wang M, Kikuzaki H, Zhu N, Sang S, Nakatani N, Ho CT. Isolation and structural elucidation of two new glycosides from sage (Salvia officinalis L.). J Agric Food Chem 2000; 48:235-238. [PMID: 10691621 DOI: 10.1021/jf990761p] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Six compounds, 1-O-(2,3, 4-trihydroxy-3-methyl)butyl-6-O-feruloyl-beta-D-glucopyranoside, ethyl beta-D-glucopyranosyl tuberonate, p-hydroxybenzoic acid, (-)-hydroxyjasmonic acid, caffeic acid, and 4-hydroxyacetophenone 4-O-[5-O-(3, 5-dimethoxy-4-hydroxybenzoyl)-beta-D-apiofrunosyl]-(1-->2)-beta-D- glu copyranoside, were isolated from the n-butanol-soluble fraction of sage leaf extracts. Their structures were determined by spectral methods (MS, NMR, and 2D-NMR), and their antioxidant activities were measured. Among them, two new glycosides were elucidated. All of these compounds showed DPPH free radical scavenging activity at the concentration of 30 mM, and caffeic acid was the most active compound.
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Affiliation(s)
- M Wang
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, New Jersey 08901-8520, USA
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26
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Abstract
Two new spirostanol saponins, tuberosides D and E, have been isolated from the seeds of Allium tuberosum. On the basis of spectral data and chemical reactions, their structures were established as (25S)-5alpha-spirostane-2alpha,3beta-diol 3-O-alpha-L-rhamnopyranosyl-(1-->2)-O-[alpha-L-rhamnopyranosyl-(1-->4 )]-O-beta-D-glucopyranoside and (25S)-5alpha-spirostan-2alpha, 3beta-diol 3-O-beta-D-glucopyranosyl-(1-->2)-O-[alpha-L-rhamnopyranosyl-(1-->4)] -O-beta-D-glucopyranoside, respectively.
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Affiliation(s)
- S Sang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 200031, People's Republic of China
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27
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Abstract
A new triterpenoid saponin, named segetoside C (1), and two known saponins, vaccaroid A (vaccaroside A) (2) and dianoside G (3), have been isolated from the seeds of Vaccaria segetalis. On the basis of chemical reaction and spectral data, the structure of segetoside C (1) has been established as: gypsogenic acid-28-O-[beta-D-glucopyranosyl-(1-->3)]-[6-O-acetyl-beta-D-glucopyra-nosyl-(1-->2)-beta-D-glucopyranosyl-(1-->6)]-beta-D-glucopyranoside.
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Affiliation(s)
- S Sang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences
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28
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Grof P, Jünemann HJ, Sang S. Comparative study of melitracene and amitriptyline in depressive patients. Act Nerv Super (Praha) 1967; 9:385. [PMID: 4889071] [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: 01/12/2023]
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