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Wang Y, Zuo J, Duan C, Peng H, Huang J, Zhao L, Zhang L, Dong Z. Large language models assisted multi-effect variants mining on cerebral cavernous malformation familial whole genome sequencing. Comput Struct Biotechnol J 2024; 23:843-858. [PMID: 38352937 PMCID: PMC10861960 DOI: 10.1016/j.csbj.2024.01.014] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 01/04/2024] [Accepted: 01/19/2024] [Indexed: 02/16/2024] Open
Abstract
Cerebral cavernous malformation (CCM) is a polygenic disease with intricate genetic interactions contributing to quantitative pathogenesis across multiple factors. The principal pathogenic genes of CCM, specifically KRIT1, CCM2, and PDCD10, have been reported, accompanied by a growing wealth of genetic data related to mutations. Furthermore, numerous other molecules associated with CCM have been unearthed. However, tackling such massive volumes of unstructured data remains challenging until the advent of advanced large language models. In this study, we developed an automated analytical pipeline specialized in single nucleotide variants (SNVs) related biomedical text analysis called BRLM. To facilitate this, BioBERT was employed to vectorize the rich information of SNVs, while a deep residue network was used to discriminate the classes of the SNVs. BRLM was initially constructed on mutations from 12 different types of TCGA cancers, achieving an accuracy exceeding 99%. It was further examined for CCM mutations in familial sequencing data analysis, highlighting an upstream master regulator gene fibroblast growth factor 1 (FGF1). With multi-omics characterization and validation in biological function, FGF1 demonstrated to play a significant role in the development of CCMs, which proved the effectiveness of our model. The BRLM web server is available at http://1.117.230.196.
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Affiliation(s)
- Yiqi Wang
- College of Biomedicine and Health, College of Life Science and Technology, Huazhong Agricultural University, No.1, Shizishan Street, Wuhan 430070, Hubei, China
- Center for Neurological Disease Research, Taihe Hospital, Hubei University of Medicine, No.32, Renmin South Road, Shiyan 442000, Hubei, China
- Precision Medicine Research Center, Taihe Hospital, Hubei University of Medicine, No. 32, Renmin South Road, Shiyan 442000, Hubei, China
| | - Jinmei Zuo
- Physical Examination Center, Taihe Hospital, Hubei University of Medicine, No. 32, Renmin South Road, Shiyan 442000, Hubei, China
| | - Chao Duan
- College of Biomedicine and Health, College of Life Science and Technology, Huazhong Agricultural University, No.1, Shizishan Street, Wuhan 430070, Hubei, China
- Center for Neurological Disease Research, Taihe Hospital, Hubei University of Medicine, No.32, Renmin South Road, Shiyan 442000, Hubei, China
| | - Hao Peng
- Center for Neurological Disease Research, Taihe Hospital, Hubei University of Medicine, No.32, Renmin South Road, Shiyan 442000, Hubei, China
- Department of Neurosurgery, Taihe Hospital, Hubei University of Medicine, No.32, Renmin South Road, Shiyan 442000, Hubei, China
| | - Jia Huang
- The Second Clinical Medical College, Lanzhou University, No. 222, South Tianshui Road, Lanzhou 730030, Gansu, China
| | - Liang Zhao
- Precision Medicine Research Center, Taihe Hospital, Hubei University of Medicine, No. 32, Renmin South Road, Shiyan 442000, Hubei, China
| | - Li Zhang
- Center for Neurological Disease Research, Taihe Hospital, Hubei University of Medicine, No.32, Renmin South Road, Shiyan 442000, Hubei, China
- Department of Neurosurgery, Taihe Hospital, Hubei University of Medicine, No.32, Renmin South Road, Shiyan 442000, Hubei, China
| | - Zhiqiang Dong
- College of Biomedicine and Health, College of Life Science and Technology, Huazhong Agricultural University, No.1, Shizishan Street, Wuhan 430070, Hubei, China
- Center for Neurological Disease Research, Taihe Hospital, Hubei University of Medicine, No.32, Renmin South Road, Shiyan 442000, Hubei, China
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Li J, Zuo J, Lv X, Ma J, Li X, Fu S, Sun J. Hedgehog signaling is essential in the regulation of limb regeneration in the Chinese mitten crab, Eriocheir sinensis. Fish Shellfish Immunol 2023; 140:108981. [PMID: 37543149 DOI: 10.1016/j.fsi.2023.108981] [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: 04/13/2023] [Revised: 07/04/2023] [Accepted: 07/31/2023] [Indexed: 08/07/2023]
Abstract
Tissue autotomy is a unique adaptive response to environmental stress, followed by regeneration process compensating for the loss of body parts. The crustaceans present remarkable activity of appendage autotomy and regeneration, however, the molecular mechanism is still unclear. In this study, the Eriocheir sinensis Hedgehog (EsHH) and Smoothened (EsSMO) were identified in the regenerative limbs, and the function of Hedgehog signaling pathway on limb regeneration was evaluated. At the blastema growth stage of limb regeneration, the expression of EsHH and EsSMO was up-regulated in response to limb autotomy stress, and down-regulated at blastema differentiation stage. To clarify the effect of Hedgehog pathway during limb regeneration, the regenerative efficiency was evaluated with Smoothened inhibitor cyclopamine or RNAi (ds-HH) injection. We observed that the regenerative efficiency was significantly repressed with blockage of Hedgehog pathway at both the basal growth stage and the proecdysial growth stage, which was indicated by the delay of wound healing and blastema growth, as well as a decrease in the size of newly formed limbs. In addition, gene expression and BrdU incorporation assay showed that the proliferation and myogenic differentiation of blastema cells were suppressed with either cyclopamine or ds-HH injection. Thus, these results suggest that Hedgehog signaling pathway is essential for the establishment of limb regeneration in E. sinensis through promoting the proliferation and myogenic differentiation of blastema cells.
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Affiliation(s)
- Ju Li
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China; Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, 300387, PR China.
| | - Jinmei Zuo
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Xiaoyan Lv
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Jiahe Ma
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Xiaohong Li
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Simiao Fu
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Jinsheng Sun
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China; Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, 300387, PR China.
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Tian WR, Zuo J, Ai J, Qi YS, Bu PP, Zhao JJ, Yu Y, Ma SL. [Research advances on the role and mechanism of microRNA in hypertrophic scar]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:196-200. [PMID: 36878530 DOI: 10.3760/cma.j.cn501225-20220508-00179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Hypertrophic scar (HS) affects the function and beauty of patients, and brings a heavy psychological burden to patients. However, the specific pathogenesis mechanism of HS in molecular biology level is not yet clear, and this disease is still one of the clinical diseases difficult to prevent and cure. MicroRNA (miR) is a family of single-stranded endogenous noncoding RNAs that can regulate gene expression. The abnormal transcription of miR in hypertrophic scar fibroblasts can affect the transduction and expression of downstream signal pathway or protein, and the exploration of miR and its downstream signal pathway and protein helps deeply understand the occurrence and development mechanism of scar hyperplasia. This article summarized and analyzed how miR and multiple signal pathways involve in the formation and development of HS in recent years, and further outlined the interaction between miR and target genes in HS.
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Affiliation(s)
- W R Tian
- Department of Plastic Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - J Zuo
- Department of Plastic Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - J Ai
- Department of Plastic Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Y S Qi
- Department of Plastic Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - P P Bu
- Department of Plastic Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - J J Zhao
- Department of Plastic Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Y Yu
- Department of Plastic Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - S L Ma
- Department of Plastic Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
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Wang Y, Huang X, Zhou Q, Tian Y, Zuo J, Yuan Z, Liu Y, Li J, Sun J. Hippo Signaling Regulates Blastema Formation During Limb Regeneration in Chinese Mitten Crab (Eriocheir sinensis). Mar Biotechnol (NY) 2023; 25:204-213. [PMID: 36586014 DOI: 10.1007/s10126-022-10194-0] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
Limb autotomy and regeneration are specific adaptations of crustaceans in response to external stress and attacks, which make them a suitable model to investigate the mechanism of organ regeneration in invertebrates. In this study, the Hippo gene of Eriocheir sinensis (EsHPO) was identified, and the effects of Hippo signaling on limb regeneration were evaluated. The expression of EsHPO and other key components of Hippo signaling was down-regulated during the basal growth phase in response to limb autotomy stress and then up-regulated during the proecdysial growth phase. The descending expression patterns of Hippo signal components were correlated with transcriptional activation of YKI and downstream target genes during the blastema formation stage, which suggested that Hippo signaling plays a key role during limb regeneration in E. sinensis. To further test the hypothesis, the transcription factor YKI was blocked via verteporfin injection after autotomy, which disrupted limb regeneration by repressing wound healing and preventing blastema emergence. Furthermore, our experiments revealed that the proliferation of blastema cells was blocked by verteporfin. In addition, the expression of genes related to ECM remodeling, cell cycle progression, and apoptosis resistance was down-regulated following the injection of verteporfin. Our findings therefore indicate that Hippo signaling is essential for successful wound healing and limb regeneration in E. sinensis by inducing ECM remodeling, as well as promoting the proliferation and repressing the apoptosis of blastema cells.
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Affiliation(s)
- Yiran Wang
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Xinrui Huang
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Qiao Zhou
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Yuxin Tian
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Jinmei Zuo
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Zengzhi Yuan
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
- Tianjin Key Laboratory of Animal and Plant Resistance/College of Life Sciences, Tianjin Normal University, Tianjin, 300387, People's Republic of China
| | - Yichen Liu
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
- Tianjin Key Laboratory of Animal and Plant Resistance/College of Life Sciences, Tianjin Normal University, Tianjin, 300387, People's Republic of China
| | - Ju Li
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China.
- Tianjin Key Laboratory of Animal and Plant Resistance/College of Life Sciences, Tianjin Normal University, Tianjin, 300387, People's Republic of China.
| | - Jinsheng Sun
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China.
- Tianjin Key Laboratory of Animal and Plant Resistance/College of Life Sciences, Tianjin Normal University, Tianjin, 300387, People's Republic of China.
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Ba Y, Sun L, Zuo J, Yu SY, Yang S, Ding LM, Feng ZC, Li ZY, Zhou GY, Yu FF. Association of oxidative stress and Kashin-Beck disease integrated Meta and Bioinformatics analysis. Osteoarthritis Cartilage 2022; 30:1606-1615. [PMID: 36096467 DOI: 10.1016/j.joca.2022.08.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 11/04/2021] [Revised: 08/16/2022] [Accepted: 08/30/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To explore the association between oxidative stress (OS) and Kashin-Beck disease (KBD). METHODS Terms associated with "KBD" and "OS" were searched in the six different databases up to October 2021. Stata 14.0 was used to pool the means and standard deviations using random-effect or fixed-effect model. The differentially expressed genes in the articular chondrocytes of KBD were identified, the OS related genes were identified by blasting with the GeneCards. The KEGG pathway and gene ontology enrichment analysis was conducted using STRING. RESULTS The pooled SMD and 95% CI showed hair selenium (-4.59; -6.99, -2.19), blood selenium (-1.65; -2.86, -0.44) and glutathione peroxidases (-4.15; -6.97, -1.33) levels were decreased in KBD, whereas the malondialdehyde (1.12; 0.60, 1.64), nitric oxide (2.29; 1.31, 3.27), nitric oxide synthase (1.07; 0.81, 1.33) and inducible nitric oxide synthase (1.69; 0.62, 2.77) were increased compared with external controls. Meanwhile, hair selenium (-2.71; -5.32, -0.10) and glutathione peroxidases (-1.00; -1.78, -0.22) in KBD were decreased, whereas the malondialdehyde (1.42; 1.04, 1.80), nitric oxide (3.08; 1.93, 4.22) and inducible nitric oxide synthase (0.81; 0.00, 1.61) were elevated compared with internal controls. Enrichment analysis revealed apoptosis was significantly correlated with KBD. The significant biological processes revealed OS induced the release of cytochrome c from mitochondria. The cellular component of OS located in the mitochondrial outer membrane. CONCLUSIONS The OS levels in KBD were significantly increased because of selenium deficiency, OS mainly occurred in mitochondrial outer membrane, released of cytochrome c from mitochondria, and induced apoptotic signaling pathway.
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Affiliation(s)
- Y Ba
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, 450001, PR China.
| | - L Sun
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, 450001, PR China.
| | - J Zuo
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, 450001, PR China.
| | - S-Y Yu
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, 450001, PR China.
| | - S Yang
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, 450001, PR China.
| | - L-M Ding
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, 450001, PR China.
| | - Z-C Feng
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, 450001, PR China.
| | - Z-Y Li
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, 450001, PR China.
| | - G-Y Zhou
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, 450001, PR China.
| | - F-F Yu
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, 450001, PR China.
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Huang J, Ding Y, Yao J, Peng K, Deng K, Zhang M, Zhang Y, Zuo J. The SARS-CoV-2 rS1-E-PLGA nanovaccine and evaluation of its immune effect in BALB/c mice. Eur Rev Med Pharmacol Sci 2022; 26:5255-5263. [PMID: 35916825 DOI: 10.26355/eurrev_202207_29316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE Vaccination is an important method for preventing COVID-19 infection. However, certain vaccines do not meet the current needs. To improve the vaccine effect, discard ineffective antigens, and focus on high-quality antigenic clusters, S1-E bivalent antigens were designed. MATERIALS AND METHODS Vaccine delivery is performed using poly (lactic-co-glycolic acid) (PLGA). Here, the recombinant S1-E (rS1-E) was covered on PLGA and injected intramuscularly into mice. In total, 48 BALB/c mice were randomly divided into six groups with 8 mice in each group. The mice received intramuscular injections. Prior to vaccination, the hydrophobicity of the rS1-E and the antigenic site of the E protein were both analysed. The morphology, zeta potential, and particle size distribution of rS1-E-PLGA were examined. Anti-S1 and anti-E antibodies were detected in mouse serum by ELISA. Neutralising an-tibodies were detected by co-incubating the pseudovirus with the obtained serum. IL-2 and TNF-α levels were also measured. RESULTS The designed recombinant S1-E protein was successfully coated on PLGA nanoparticles. rS1-E-PLGA nanovaccine has suitable size, shape, good stability, sustained release and other characteristics. Importantly, mice were stimulated with rS1-E-PLGA nanovaccines to produce high-titre antibodies and a good cellular immune response. CONCLUSIONS Our results indicate that rS1-E-PLGA nanovaccine may provide a good protective effect, and the vaccine should be further investigated in human clinical trials for use in vaccination or as a booster.
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Affiliation(s)
- J Huang
- The Laboratory of Translational Medicine, Nanhua Hospital Affiliated to University of South China, The Third Affiliated Hospital of University of South China, Institute of Pathogenic Biology, Hengyang Medical School, University of South China, Hengyang, Hunan, P.R. China.
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Li J, Tian Y, Li X, Zuo J, Zhao R, Sun J. Insulin-like signaling promotes limb regeneration in the Chinese mitten crab (Eriocheir sinensis). Fish Shellfish Immunol 2022; 122:268-275. [PMID: 35134516 DOI: 10.1016/j.fsi.2022.02.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 11/02/2021] [Revised: 01/21/2022] [Accepted: 02/04/2022] [Indexed: 06/14/2023]
Abstract
In the pond culture of Chinese mitten crabs, limb autotomy seriously affects the feeding efficiency, immunity and survival. Therefore, it is crucial to understand the mechanism of limb regeneration of mitten crabs, so that culture strategies could be developed to reduce the limb impairment rate. The insulin-like signaling (ILS) pathway is evolutionarily conserved, and plays key roles in the growth and immunity of various species. In this study, a full-length cDNA of insulin-like receptor (EsInR) was identified from Eriocheir sinensis, and its mRNA expression patterns during limb regeneration was evaluated. The cDNA of EsInR includes a 4326 bp ORF encoding a protein of 1441 amino acids, with conserved α-and β-subunits. The EsInR and genes related to ILS were found to be upregulated during limb regeneration, which indicated that ILS plays a key role in limb regeneration of E. sinensis. Our experiment revealed that inhibition of ILS through injection of the InR inhibitor GSK1838705A at the blastema formation stage significantly reduced the limb regeneration rate compared to control group. In addition, injection of GSK1838705A also reduced the size of newly formed limbs after the molting cycle. Furthermore, we found that genes related to myogenesis were downregulated following injection of InR inhibitor both before and after molting. The results also indicated that cyclins and CDK1 were downregulated, while CKIs were upregulated following treatment with the InR inhibitor. These results suggest that ILS regulates limb regeneration in E. sinensis by promoting muscle growth and regeneration in response to autotomy stress. Thus, we identified a conserved insulin-like receptor in E. sinensis, and provide new evidence for the involvement of ILS in the regulation of limb autotomy and regeneration in crustaceans.
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Affiliation(s)
- Ju Li
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China.
| | - Yuxin Tian
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Xiaohong Li
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Jinmei Zuo
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Ruihao Zhao
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China
| | - Jinsheng Sun
- College of Life Science, Tianjin Normal University, Tianjin, 300387, China.
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Xie W, Zuo J, Ma Z, Yu W, Hu Z, Yang T, Song Z. The Burden of Colorectal Cancer Attributable to Diet Low in Fiber from 1990 to 2019: A Global, Regional and National Analysis. J Nutr Health Aging 2022; 26:1061-1069. [PMID: 36519769 DOI: 10.1007/s12603-022-1865-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The colorectal cancer (CRC) burden is increasingly high. The aim of this study was to investigate temporal and geographical trends in CRC deaths and disability-adjusted life-years (DALYs) attributable to diet low in fiber globally from 1990 to 2019. DESIGN Cross-sectional study. SETTING The study based on the Global Burden of Disease Study (GBD) 2019. PARTICIPANTS The population comprised individuals from 204 countries and territories who were diagnosed with CRC attributable to diet low in fiber from 1990 to 2019. MEASUREMENTS Deaths, DALYs, age-standardized mortality rates (ASMR), and age-standardized DALY rates (ASDR) for CRC attributable to diet low in fiber were described, and estimated annual percentage change (EAPC) was further calculated to assess the burden in different regions, countries, sexes, and age groups. Additionally, we explored the association between EAPC and ASMR/ASDR (in 1990) and Human Development Index (HDI, in 2019). RESULTS From 1990 to 2019, global ASMR and ASDR for CRC attributable to diet low in fiber decreased slightly, but the corresponding deaths and DALYs increased by 63.37% and 51.36%, respectively. Those burden varied considerably between regions and countries. The burden was higher in high, high-middle and middle SDI regions, especially in Asia and Western Europe, but when HDI > 0.7, an increasingly rapid decline in ASMR and ASDR was revealed. Unexpectedly, many less well-developed countries within the traditionally low deaths and DALYs regions of Africa, Central Latin America, and Middle East showed gradual increases in ASMR and ASDR. CONCLUSION The global burden of CRC attributable to diet low in fiber has decreased over the last 30 years, but remains at a high level. It is essential for decision-makers to take targeted measures for improving population awareness and intake of dietary fiber.
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Affiliation(s)
- W Xie
- Zhenshun Song, Department of General Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Yanchang Road, Shanghai, 200072, China, Department of General Surgery, Shanghai Fourth People's Hospital, Tongji University School of Medicine, 1279 Sanmen Road, Shanghai, 200072, China, E-mail: , Tel: +86-21-66307437, Fax: +86-21-66307437; Tingsong Yang, Department of General Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Yanchang Road, Shanghai, 200072, China, E-mail: , Tel: +86-021-66307347, Fax: +86-021-66307347
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Xiu L, Li N, Wang WP, Chen F, Yuan GW, Sun YC, Zhang R, Li XG, Zuo J, Li N, Cui W, Wu LY. [Identification of serum peptide biomarker for ovarian cancer diagnosis by Clin-TOF-II-MS combined with magnetic beads technology]. Zhonghua Zhong Liu Za Zhi 2021; 43:1188-1195. [PMID: 34794222 DOI: 10.3760/cma.j.cn112152-20210315-00229] [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 explore the serum cyclic polypeptide biomarkers for ovarian cancer diagnosis. Methods: A total of 54 patients with epithelial ovarian cancer confirmed by pathology in Cancer Hospital, Chinese Academy of Medical Sciences from March 2018 to September 2018 were selected as the study subjects, and 40 healthy women with normal examination results in the cancer screening center were selected as the control. All of the samples were randomly divided into training set and validation set at the ratio of 1∶1 with a random number. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) combined with magnetic bead technology was used for detecting peptide profiling in serum samples to screen significantly differently expressed peptides between ovarian cancer group and control group of the training set (score>5). Receiver operating characteristic (ROC) curve analysis was used to screen differential peptide peaks with area under curve (AUC) ≥0.8, sensitivity and specificity>90% in the training set and validation set. Liquid chromatography-mass spectrometry (LC-MS/MS) was further used to determine the composition of differentially expressed peptides. Results: By comparing the peptide profiles of the two groups, 102 differential peptide peaks were initially detected in the mass-to-charge ratio range of 1 000 to 10 000. ROC curve analysis showed that there were 42 differential peptide peaks with AUC ≥0.8 in both training set and validation set, 19 of which were highly expressed in ovarian cancer group, and 23 were lowly expressed. There were 15 different peptide peaks in highly expressed ovarian cancer group with sensitivity and specificity over 90%. The mass-to-charge ratios were 7 744.27, 5 913.41, 5 329.87, 4 634.21, 4 202.02, 3 879.26, 3 273.35, 3 253.79, 3 234.34, 2 950.33, 2 664.51, 2 018.38, 1 893.37, 1 498.69 and 1 287.55. There were 15 different peptide peaks in lowly expressed ovarian cancer group with sensitivity and specificity over 90%, the mass-to-charge ratios were 9 288.46, 7 759.77, 5 925.24, 4 652.77, 4 210.42, 3 887.02, 3 279.90, 3 240.82, 2 962.15, 2 932.70, 2 022.42, 1 897.16, 1 501.69, 1 337.38 and 1 290.13. No protein composition was identified in 15 different peptide peaks in lowly expressed ovarian cancer group. The two protein compositions identified in 15 different peptide peaks in highly expressed ovarian cancer group were recombinant serglycin (SRGN) and fibinogen alpha chain (FGA), the mass-to-charge ratios of which were 1 498.696 and 5 913.417, respectively. The sensitivity and specificity of the two proteins for ovarian cancer diagnosis were 100%, 100% and 90.9%, 100%, respectively. Conclusion: SRGN and FGA are highly expressed in the serum of ovarian cancer patients, which may be potential diagnostic markers for ovarian cancer.
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Affiliation(s)
- L Xiu
- Department of Gynecology Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - N Li
- Department of Gynecology Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - W P Wang
- Department of Gynecology Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - F Chen
- Department of Clinical Laboratory, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - G W Yuan
- Department of Gynecology Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y C Sun
- Department of Gynecology Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - R Zhang
- Department of Gynecology Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - X G Li
- Department of Gynecology Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J Zuo
- Department of Gynecology Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - N Li
- Department of Gynecology Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - W Cui
- Department of Clinical Laboratory, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - L Y Wu
- Department of Gynecology Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Parry H, McIlroy G, Bruton R, Ali M, Stephens C, Damery S, Otter A, McSkeane T, Rolfe H, Faustini S, Wall N, Hillmen P, Pratt G, Paneesha S, Zuo J, Richter A, Moss P. Antibody responses after first and second Covid-19 vaccination in patients with chronic lymphocytic leukaemia. Blood Cancer J 2021; 11:136. [PMID: 34330895 PMCID: PMC8323747 DOI: 10.1038/s41408-021-00528-x] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/05/2021] [Accepted: 07/09/2021] [Indexed: 12/15/2022] Open
Abstract
B-cell chronic lymphocytic leukaemia (CLL) is associated with immunosuppression and patients are at increased clinical risk following SARS-CoV-2 infection. Covid-19 vaccines offer the potential for protection against severe infection but relatively little is known regarding the profile of the antibody response following first or second vaccination. We studied spike-specific antibody responses following first and/or second Covid-19 vaccination in 299 patients with CLL compared with healthy donors. 286 patients underwent extended interval (10-12 week) vaccination. 154 patients received the BNT162b2 mRNA vaccine and 145 patients received ChAdOx1. Blood samples were taken either by venepuncture or as dried blood spots on filter paper. Spike-specific antibody responses were detectable in 34% of patients with CLL after one vaccine (n = 267) compared to 94% in healthy donors with antibody titres 104-fold lower in the patient group. Antibody responses increased to 75% after second vaccine (n = 55), compared to 100% in healthy donors, although titres remained lower. Multivariate analysis showed that current treatment with BTK inhibitors or IgA deficiency were independently associated with failure to generate an antibody response after the second vaccine. This work supports the need for optimisation of vaccination strategy in patients with CLL including the potential utility of booster vaccines.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Antibodies, Viral/blood
- Antibodies, Viral/immunology
- Antibody Formation/drug effects
- BNT162 Vaccine
- COVID-19/blood
- COVID-19/immunology
- COVID-19/prevention & control
- COVID-19 Vaccines/administration & dosage
- COVID-19 Vaccines/immunology
- Female
- Humans
- Immunization, Secondary
- Leukemia, Lymphocytic, Chronic, B-Cell/blood
- Leukemia, Lymphocytic, Chronic, B-Cell/immunology
- Male
- Middle Aged
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Affiliation(s)
- H Parry
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - G McIlroy
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - R Bruton
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - M Ali
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - C Stephens
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - S Damery
- Institute of Applied Health Research, University of Birmingham, Birmingham, B15 2TT, UK
| | - A Otter
- National infection Service, Public Health England, Porton Down, Salisbury, SP4 OJG, UK
| | - T McSkeane
- Cancer Research UK Clinical Trials Unit, University of Birmingham, B15 2TT, Birmingham, UK
| | - H Rolfe
- Cancer Research UK Clinical Trials Unit, University of Birmingham, B15 2TT, Birmingham, UK
| | - S Faustini
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - N Wall
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - P Hillmen
- St. James's University Hospital, Leeds Teaching Hospitals NHS Trust, Leeds, LS9 7TF, UK
| | - G Pratt
- Queen Elizabeth Hospital, University Hospitals Birmingham, Birmingham, B15 2TH, UK
| | - S Paneesha
- Birmingham Heartlands Hospital, University Hospitals Birmingham, Bordesley Green East, B9 5SS, Birmingham, UK
| | - J Zuo
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - A Richter
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - P Moss
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK.
- Queen Elizabeth Hospital, University Hospitals Birmingham, Birmingham, B15 2TH, UK.
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11
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Zeng J, Li N, Yuan GW, Sun YC, Zhang R, Li XG, Zuo J, Li N, Wu LY. [Analysis of PARP inhibitors induced anemia in advanced and relapsed epithelial ovarian cancer]. Zhonghua Fu Chan Ke Za Zhi 2021; 56:401-407. [PMID: 34154315 DOI: 10.3760/cma.j.cn112141-20210104-00006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the clinical features of poly ADP-ribose polymerase (PARP) inhibitor-related anemia in advanced and relapsed epithelial ovarian cancer (EOC). Methods: Patients diagnosed with advanced or relapsed EOC and treated with PARP inhibitor at National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College between January 2015 to October 2020 were accrued. The data included PARP inhibitors, treatment details, and lab tests before treatment and during treatment were collected and the clinical characteristics of PARP inhibitor-related anemia were analyzed. Results: (1) A total of 98 patients with a median age of 56.5 years old (30-82 years old) were enrolled in this study. All patients were treated with PARP inhibitor (65 cases of olaparib, 17 cases of niraparib, and 16 cases of fluzoparib). The median treatment duration was 37.5 weeks (4-119 weeks). (2) The anemia rate was 40% (39/98), including 5% (5/98) of grade Ⅰ, 14% (14/98) of grade Ⅱ, 11% (11/98) of grade Ⅲ, and 9% (9/98) of grade Ⅳ. Fourteen patients with pre-treatment grade Ⅰ anemia had a higher rate of anemia events than the 80 patients without pre-treatment anemia, 7/14 vs 35% (28/80; χ2=4.281, P=0.039). (3) The median anemia occurrence time was 7.0 weeks (1-52 weeks), including 41% (16/39) of anemia cases occurred in 1-4 weeks, 26% (10/39) occurred in 5-8 weeks, 13% (5/39) occurred in 9-12 weeks, 3% (1/39) occurred in 13-16 weeks, 10% (4/39) occurred in 17-20 weeks, 8% (3/39) occurred ≥21 weeks. At the time of the lowest hemoglobulin tested, the median value of mean corpuscular volume (MCV) was 106 fl,which was higher than the up limit of normal range (100 fl), 74% (29/39) of anemia patients had an elevated MCV level; the median value of mean corpuscular hemoglobin (MCH) was 36 pg, 54% (21/39) of anemia patients had an elevated MCH level; the median value of mean corpuscular hemoglobin concentration (MCHC) was 320 g/L, 69% (27/39) of anemia patients had a higher MCHC level; 92% (36/39) of anemia patients had a normal level of serum iron; 79% (31/39) of anemia patients had a normal level of transferrin. 74% (29/39) of the anemia patients were macrocytic orthochromatic anemia. (4) Among the 39 patients with anemia, 20 patients (51%, 20/39) withhold the treatment of PARP inhibitor due to grade Ⅲ or Ⅳ anemia, including 10 patients (50%, 10/20) who resumed the PARP inhibitor treatment by suppling iron, folate, and vitamin B12. The median stopping time of PARP inhibitor was 5.5 weeks (2-10 weeks), while the other 10 patients terminated the PARP inhibitor treatment for not recovering from severe anemia. Conclusions: One of the common adverse effects of PARP inhibitors is anemia, which mostly happened in the first 3 months of treatment. In the treatment of EOC, PARP inhibitor-related anemia mainly manifest as macrocytic orthochromatic anemia, and most patients with normal serum iron and transferrin.
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Affiliation(s)
- J Zeng
- Department of Gynecological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - N Li
- Department of Gynecological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - G W Yuan
- Department of Gynecological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y C Sun
- Department of Gynecological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - R Zhang
- Department of Gynecological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - X G Li
- Department of Gynecological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J Zuo
- Department of Gynecological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - N Li
- Department of Gynecological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - L Y Wu
- Department of Gynecological Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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12
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Jing Y, Zuo J, Phouthapane V, Chen Z, Han X. An Optimized Method for Detecting AI-2 Signal Molecule by a Bioassay with Vibrio harveyi BB170. Microbiology (Reading) 2021. [DOI: 10.1134/s0026261721030048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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13
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Yao Y, Deng R, Liao D, Xie H, Zuo J, Jia Y, Kong F. Maintenance treatment in advanced HER2-negative gastric cancer. Clin Transl Oncol 2020; 22:2206-2212. [PMID: 32562198 DOI: 10.1007/s12094-020-02379-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 05/09/2020] [Indexed: 01/21/2023]
Abstract
Survival for patients with advanced gastric cancer (GC) remains poor. Systemic chemotherapy which has reached a plateau stays the standard first-line (1L) treatment for advanced human epidermal growth-factor receptor 2 (HER2)-negative GC. To maximize the benefit of 1L treatment, the concept of maintenance treatment is constantly being explored. In advanced HER2-negative GC, current clinical guidelines do not recommend a standard maintenance therapy strategy. In addition to the monotherapy maintenance with fluorouracil after 4-6 cycles of 1L chemotherapy, some agents that are active against novel targets have been evaluated in clinical trials for maintenance treatment. Whereas most of these trials do not reach their primary endpoints, they open new horizons for the 1L treatment of advanced HER2-negative GC. Therefore, we reviewed the clinical trials in the field of maintenance treatment in advanced HER2-negative GC and discussed some of the problems in clinical trials.
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Affiliation(s)
- Y Yao
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Anshanxi Road, Nankai District, Tianjin, 300193, China
| | - R Deng
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Anshanxi Road, Nankai District, Tianjin, 300193, China
| | - D Liao
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Anshanxi Road, Nankai District, Tianjin, 300193, China
| | - H Xie
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Anshanxi Road, Nankai District, Tianjin, 300193, China
| | - J Zuo
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Anshanxi Road, Nankai District, Tianjin, 300193, China
| | - Y Jia
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Anshanxi Road, Nankai District, Tianjin, 300193, China
| | - F Kong
- Department of Oncology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Anshanxi Road, Nankai District, Tianjin, 300193, China.
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14
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Wang QJ, Wang H, Zhou ZH, Zuo J, Zhang CL. The split-off terahertz radiating dipoles on thermally reduced α-V 2O 5 (001) surface. Nanoscale 2020; 12:21368-21375. [PMID: 33078183 DOI: 10.1039/d0nr03889j] [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] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The trapped electron states on a pliable lattice have different localization and physical chemistry characteristics. Here, terahertz time-domain measurements suggest that the formation of vanadyl oxygen defect, in the presence of the surface potential traps and mobile charge carriers, leads to a transient charge distribution that forms terahertz radiating dipoles in V2O5. The emergence of radiating dipoles is evidenced by terahertz responses with a two-valley feature of the thermally reduced α-V2O5 (001) thin films in the temperature range of 300-700 K. The two photoconductance valleys on a several millielectron volts interval are related to two emergent split-off traps, which originate from the VO6 octahedra distortion upon the vanadyl oxygen desorption on the surface. The pliable surface lattices plays a decisive role. So long as the α-V2O5 (001) thin films are covered by a 30 nm-thick Al2O3 capping layer, the distinct two-valley feature disappears completely in the full temperature range. The terahertz radiating dipoles with a fine energy structure is potentially a new measure for charge dynamics on the α-V2O5 (001) surface.
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Affiliation(s)
- Q J Wang
- Department of Physics, Capital Normal University, Key Laboratory of Terahertz Optoelectronics, Beijing 100048, China.
| | - H Wang
- Department of Physics, Capital Normal University, Key Laboratory of Terahertz Optoelectronics, Beijing 100048, China.
| | - Z H Zhou
- Department of Physics, Capital Normal University, Key Laboratory of Terahertz Optoelectronics, Beijing 100048, China.
| | - J Zuo
- Department of Physics, Capital Normal University, Key Laboratory of Terahertz Optoelectronics, Beijing 100048, China.
| | - C L Zhang
- Department of Physics, Capital Normal University, Key Laboratory of Terahertz Optoelectronics, Beijing 100048, China.
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15
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Zuo J. Radiologic quantitative score in computed tomography to predict primary debulking outcome in advanced ovarian cancer. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Chen X, Hu TM, Zuo J, Wu H, Liu ZH, Zhan YX, Xia Y, Wang J, Wei W. Intravitreal conbercept for branch retinal vein occlusion induced macular edema: one initial injection versus three monthly injections. BMC Ophthalmol 2020; 20:225. [PMID: 32527234 PMCID: PMC7291449 DOI: 10.1186/s12886-020-01494-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 06/01/2020] [Indexed: 11/10/2022] Open
Abstract
Background To compare the efficacy of one initial intravitreal injection of conbercept (IVC) versus three monthly IVCs in patients with macular edema (ME) after branch retinal vein occlusion (BRVO). Both options were followed by a pro re nata (PRN) retreatment regimen. Methods This study retrospectively investigated and followed 60 patients with acute ME secondary to BRVO for over a year. 30 subjects received one initial injection (1 + PRN group); while, 30 received three monthly injections (3 + PRN group). The functional and anatomic outcomes were assessed during each follow-up. Results The general characteristics of the 60 subjects were as follows: mean [SD] age, 57.43 [13.06] years; 33 [55%] female; 36 [60%] non-ischemic form. Both groups showed a stable gain in visual acuity (VA) with similar logMAR (mean ± SD) (1 + PRN group 0.308 ± 0.399, 3 + PRN group 0.34 ± 0.352) during the first 12 months. Additionally, both groups exhibited a significant reduction in central foveal thickness (CFT) with no statistically significant difference between them (1 + PRN group 222.1 μm ± 197.1 μm, 3 + PRN group 228.4 μm ± 200.2 μm). Both treatment groups had similar improvements in logMAR and anatomic outcomes over time. The stratified analysis showed that patients with the non-ischemic form and those with the ischemic form had similar improvements in VA (0.346 ± 0.366 VS 0.29 ± 0.39, P = 0.575) during the 12 months follow-ups. The number of injections was lower in the 1 + PRN group (4.0 ± 1.6) than in the 3 + PRN group (4.7 ± 1.3) (P = 0.068). No adverse effects or unexpected safety issues were reported in either group. Conclusions Conbercept yielded significant improvements in VA and CFT among patients with BRVO induced ME, independent of their retinal ischemia status. The results showed that the 3 + PRN regimen do not lead to better functional outcomes or lower treatment needs in clinical practice as compared to the 1 + PRN regimen.
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Affiliation(s)
- X Chen
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210000, China
| | - T M Hu
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210000, China
| | - J Zuo
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210000, China
| | - H Wu
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210000, China
| | - Z H Liu
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210000, China
| | - Y X Zhan
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210000, China
| | - Y Xia
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210000, China
| | - J Wang
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210000, China
| | - W Wei
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210000, China.
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17
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Zuo J, Fan Z, Jia Y, Wang Y, Wang L, Lizaso A, Li B. Comprehensive genomic profiling of early-stage esophageal squamous cell carcinoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz247.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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18
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Zuo J, Qian K, He Y, Xuan Y, Tan I, Butlin M, Chen P, Avolio A. VITAMIN D DEFICIENCY IS ASSOCIATED WITH ANKLE-BRACHIAL INDEX BUT NOT ARTERIAL STIFFNESS IN AN ELDERLY COMMUNITY-DWELLING CHINESE POPULATION. J Hypertens 2019. [DOI: 10.1097/01.hjh.0000571876.43088.e9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Zuo J, Huang Y, Wu L. Nomograms based on HPV load for predicting survival in cervical squamous cell carcinoma: An observational study with a long-term follow-up. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Dai W, Chen Z, Zuo J, Tan J, Tan M, Yuan Y. Risk factors of postoperative complications after emergency repair of incarcerated groin hernia for adult patients: a retrospective cohort study. Hernia 2018; 23:267-276. [PMID: 30421299 PMCID: PMC6456471 DOI: 10.1007/s10029-018-1854-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [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: 06/28/2018] [Accepted: 11/08/2018] [Indexed: 11/12/2022]
Abstract
Purpose This study aimed to explore risk factors of postoperative complications for adult patients with incarcerated groin hernia (IGH). Methods From January 2010 to December 2017, consecutive patients undergoing emergency hernia repair for IGH in our center were retrospectively reviewed. Postoperative complications, such as surgical site infection, seroma, hernia recurrence and mortality, were investigated, with risk factors for such complications analyzed using univariate and multivariate regressions. Results Sixty-four patients were included, with 51 males and 13 females (mean age 65.1, range 25–98 years). Ten patients (15.6%) underwent resection of necrotic bowel and anastomosis. 43 patients (67.2%) received open tension-free herniorrhaphy with polypropylene mesh, whereas the rest (32.8%) received herniorrhaphy without mesh. The overall postoperative complication rate was 40.6% (26/64), with an incisional complication rate of 31.2% (20/64) and an infection rate of 6.2% (4/64). At a median follow-up of 32 months, hernia recurrence and mortality were recorded in five cases each (7.8%). Mesh repair was associated with decreased recurrence rate compared with non-mesh repair (2.3% vs. 19.0%, p = 0.019). Diabetes mellitus (OR 8.611, 95%CI 1.292–57.405; p = 0.026) was an independent risk factor of postoperative complications, together with chronic obstructive pulmonary disease (COPD; OR 14.365, 95%CI 1.652–127.767, p = 0.016), intestinal necrosis (OR 14.260, 95%CI 1.079–188.460, p = 0.044), and general anesthesia (OR 14.543, 95%CI 1.682–125.711, p = 0.015) as risk for incisional complications after surgery. Conclusions Diabetes mellitus was an independent risk factor of postoperative complications for IGH, along with COPD, intestinal necrosis and general anesthesia associated with incisional complications. The use of polypropylene mesh did not increase infection or recurrence rate in this cohort.
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Affiliation(s)
- W Dai
- Center of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong Province, People's Republic of China.,Center of Hernia and Abdominal Wall Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong Province, People's Republic of China
| | - Z Chen
- Center of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong Province, People's Republic of China.,Center of Hernia and Abdominal Wall Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong Province, People's Republic of China
| | - J Zuo
- Center of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong Province, People's Republic of China.,Center of Hernia and Abdominal Wall Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong Province, People's Republic of China
| | - J Tan
- Center of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong Province, People's Republic of China.,Center of Hernia and Abdominal Wall Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong Province, People's Republic of China
| | - M Tan
- Center of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong Province, People's Republic of China. .,Center of Hernia and Abdominal Wall Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong Province, People's Republic of China.
| | - Y Yuan
- Center of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong Province, People's Republic of China. .,Center of Hernia and Abdominal Wall Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong Province, People's Republic of China.
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Holliday LS, McHugh KP, Zuo J, Aguirre JI, Neubert JK, Rody WJ. Exosomes: novel regulators of bone remodelling and potential therapeutic agents for orthodontics. Orthod Craniofac Res 2018. [PMID: 28643924 DOI: 10.1111/ocr.12165] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Recent studies suggest that exosomes are involved in intercellular communication required for the maintenance of healthy bone. Exosomes are small (30-150 nm in diameter) extracellular vesicles that are formed in multivesicular bodies and are released from cells as the multivesicular bodies fuse with the plasma membrane. Regulatory exosomes have the capacity to exert profound control over target cells. They can stimulate plasma membrane receptors and are also internalized by the target cell delivering proteins, lipids, small molecules and functional RNAs from the cell of origin. We and others have recently reported on regulatory exosomes from osteoclasts and osteoblasts. Key candidate molecules identified in exosome-based regulation of bone remodelling include receptor activator of nuclear factor kappa B (RANK), RANK-ligand (RANKL), ephrinA2, semaphorin 4D, microRNA-146a and microRNA- 214-3p. Exosomes will likely prove to be crucial elements in the communication networks integrating bone cells (osteoclasts, osteoblasts, osteocytes) and linking bone to other tissue. Exosomes collected from bone cells grown in culture may prove useful to augment bone remodelling associated with orthodontic force application or required for the repair of craniofacial bone. Various technologies allow exosomes to be engineered to improve their targeting and efficacy for therapeutic purposes. In summary, exosomes have emerged as important elements of the machinery for intercellular communication between bone cells. They hold great promise as therapeutic targets, biomarkers and therapeutic agents for orthodontists.
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Affiliation(s)
- L S Holliday
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, FL, USA.,Department of Anatomy and Cell Biology, University of Florida College of Medicine, Gainesville, FL, USA
| | - K P McHugh
- Department of Periodontics, University of Florida College of Dentistry, Gainesville, FL, USA
| | - J Zuo
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, FL, USA
| | - J I Aguirre
- Department of Physiological Sciences, University of Florida College of Veterinary Medicine, Gainesville, FL, USA
| | - J K Neubert
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, FL, USA
| | - W J Rody
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, FL, USA
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Ren Y, Ye J, Xiong W, Zuo J, He Y, Tan M, Yuan Y. Adjuvant radiotherapy for positive lymph nodes of oesophageal squamous cell carcinoma: Can it earn promising benefits at long-term follow-up? Cancer Radiother 2018; 22:140-147. [PMID: 29454737 DOI: 10.1016/j.canrad.2017.09.005] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Revised: 08/29/2017] [Accepted: 09/08/2017] [Indexed: 12/22/2022]
Abstract
PURPOSE The value of adjuvant radiotherapy for patients with positive lymph nodes after curative resection of oesophageal squamous cell carcinoma is controversial. This study aims to investigate its long-term benefits in a specific cohort. PATIENTS AND METHODS The charts between 1990 and 2003 from patients with positive lymph nodes were retrospectively reviewed. Those subjects were divided into adjuvant radiotherapy and surgery alone groups, with two subgroups defined by radiation dose (cutoff value: 50Gy). Overall survival, disease-free survival and locoregional recurrence-free survival were compared between two groups, with predictive factors of overall survival analysed meanwhile. RESULTS In sum, 175 matched patients with 1:2 ratios for group balance were enrolled for final analysis. During the follow-up (median: 37.0 months), 143 (81.7%) deaths were recorded, with 70.6% of deaths from cancer progression. The median overall survival time (19.5, 4 to 172 months) was not significantly different between the two groups (18.9 vs. 20.0 months, P=0.179). However, the disease-free survival time was significantly shorter in the adjuvant radiotherapy group than that in the control group (median, 11.5 vs. 14.9 months; P=0.001), with the locoregional recurrence-free survival time impressively prolonged (median: 18.3 vs. 16.5 months; P=0.022). Age (P=0.030), number (P=0.005) and ratio (P=0.002) of positive lymph nodes were associated with overall survival, but radiation dose was not (P=0.204). CONCLUSION Adjuvant radiotherapy with low- or high-dose did not improve survival compared with surgery alone. However, radiotherapy was effective to control locoregional recurrence, and could be applied as salvage therapy when recurrence event occurred.
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Affiliation(s)
- Y Ren
- Department of radiation oncology, The First Affiliated Hospital, Sun Yat-Sen University, 58, 2nd Zhongshan Road, 510080 Guangzhou, PR China
| | - J Ye
- Center of gastrointestinal surgery, The First Affiliated Hospital, Sun Yat-Sen University, 58, 2nd Zhongshan Road, 510080 Guangzhou, PR China
| | - W Xiong
- Center of gastrointestinal surgery, The First Affiliated Hospital, Sun Yat-Sen University, 58, 2nd Zhongshan Road, 510080 Guangzhou, PR China
| | - J Zuo
- Center of gastrointestinal surgery, The First Affiliated Hospital, Sun Yat-Sen University, 58, 2nd Zhongshan Road, 510080 Guangzhou, PR China
| | - Y He
- Center of gastrointestinal surgery, The First Affiliated Hospital, Sun Yat-Sen University, 58, 2nd Zhongshan Road, 510080 Guangzhou, PR China
| | - M Tan
- Center of gastrointestinal surgery, The First Affiliated Hospital, Sun Yat-Sen University, 58, 2nd Zhongshan Road, 510080 Guangzhou, PR China
| | - Y Yuan
- Center of gastrointestinal surgery, The First Affiliated Hospital, Sun Yat-Sen University, 58, 2nd Zhongshan Road, 510080 Guangzhou, PR China.
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Liu Z, Fang Q, Zuo J, Minhas V, Wood C, Zhang T. The world‐wide incidence of Kaposi's sarcoma in the
HIV
/
AIDS
era. HIV Med 2018; 19:355-364. [DOI: 10.1111/hiv.12584] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/06/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Z Liu
- Department of Epidemiology School of Public Health Fudan University Shanghai China
- Key Laboratory of Public Health Safety (Fudan University) Ministry of Education Shanghai China
| | - Q Fang
- Department of Epidemiology School of Public Health Fudan University Shanghai China
- Key Laboratory of Public Health Safety (Fudan University) Ministry of Education Shanghai China
| | - J Zuo
- Department of Epidemiology School of Public Health Fudan University Shanghai China
- Key Laboratory of Public Health Safety (Fudan University) Ministry of Education Shanghai China
| | - V Minhas
- Nebraska Center of Virology and the School of Biological Sciences University of Nebraska‐Lincoln Lincoln NE USA
| | - C Wood
- Nebraska Center of Virology and the School of Biological Sciences University of Nebraska‐Lincoln Lincoln NE USA
| | - T Zhang
- Department of Epidemiology School of Public Health Fudan University Shanghai China
- Key Laboratory of Public Health Safety (Fudan University) Ministry of Education Shanghai China
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Song Y, Zuo J, Huang X, Shen GH, Liu XY, Zhang X. [Expressions and clinical significances of paired box gene 2 and cyclin D1 in advanced ovarian serous carcinoma]. Zhonghua Zhong Liu Za Zhi 2017; 39:891-895. [PMID: 29262504 DOI: 10.3760/cma.j.issn.0253-3766.2017.12.003] [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 expressions and clinical significances of paired box gene 2 (Pax2) and cyclin D1 protein in advanced ovarian serous carcinoma. Methods: From January 2003 to December 2013, the pathologic tissues of 202 patients with advanced ovarian serous cancer (Ⅲ-Ⅳ) who underwent initial cytoreductive surgery were collected. The expressions of Pax2 and cyclin D1 protein were detected by immunohistochemistry in tissue microarray. The relationships of their expressions with the clinicopathological features and prognosis of the patients were analyzed. Results: The positive rate of Pax2 protein expression of the 202 patients with ovarian serous adenocarcinoma was 24.8% (50/202) and that of cyclin D1 was 25.2% (51/202). The expressions of Pax2 and cyclin D1 were not significantly related with age, clinical stage and pathological grade of ovarian serous adenocarcinoma patients (P>0.05). The median overall survival (OS) time of Pax2-negative patients was 53 months and the progression-free survival (PFS) time was 29 months. The median OS time of Pax2-positive patients was 66 months and PFS time was 33 months, the OS of Pax2-negative patients was significant different from that of Pax2-positive patients (χ(2)=4.06, P=0.04). The median PFS time of Pax2-negative patients was not significant different from that of Pax2-positive patients (χ(2)=2.43, P=0.11). The median OS time of cyclin D1-negative patients was 62 months and PFS time was 30 months. The median OS time of cyclin D1-positive patients was 48 months and PFS time was 22 months. The median OS time of cyclin D1-negative patients was significantly different from that of cyclin D1-positive patients (χ(2)=4.71, P=0.03), while the median PFS time of cyclin D1-negative patients was marginally different from that of cyclin D1-positive patients (χ(2)=0.59, P=0.41). Multivariate analysis showed that the expression of Pax2 was an independent factor of the prognosis for patients with ovarian serous adenocarcinoma (RR=0.597, 95% CI 0.371-0.962, P<0.034). Conclusion: The expressions of Pax2 and cyclin D1 are associated with the prognosis of patients with advanced ovarian serous adenocarcinoma while Pax2 is an independent prognostic factor.
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Affiliation(s)
- Y Song
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peiking Union Medical College, Beijing 100021, China
| | - J Zuo
- Department of Gynecology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peiking Union Medical College, Beijing 100021, China
| | - X Huang
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peiking Union Medical College, Beijing 100021, China
| | - G H Shen
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peiking Union Medical College, Beijing 100021, China
| | - X Y Liu
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peiking Union Medical College, Beijing 100021, China
| | - X Zhang
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peiking Union Medical College, Beijing 100021, China
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25
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Zuo J. 315P Correlation between the expression of heat shock proteins and the prognosis of advanced ovarian serous adenocarcinoma. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw585.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Mason JA, Davison-Versagli CA, Leliaert AK, Pape DJ, McCallister C, Zuo J, Durbin SM, Buchheit CL, Zhang S, Schafer ZT. Oncogenic Ras differentially regulates metabolism and anoikis in extracellular matrix-detached cells. Cell Death Differ 2016; 23:1271-82. [PMID: 26915296 DOI: 10.1038/cdd.2016.15] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 12/09/2015] [Accepted: 01/25/2016] [Indexed: 12/14/2022] Open
Abstract
In order for cancer cells to survive during metastasis, they must overcome anoikis, a caspase-dependent cell death process triggered by extracellular matrix (ECM) detachment, and rectify detachment-induced metabolic defects that compromise cell survival. However, the precise signals used by cancer cells to facilitate their survival during metastasis remain poorly understood. We have discovered that oncogenic Ras facilitates the survival of ECM-detached cancer cells by using distinct effector pathways to regulate metabolism and block anoikis. Surprisingly, we find that while Ras-mediated phosphatidylinositol (3)-kinase signaling is critical for rectifying ECM-detachment-induced metabolic deficiencies, the critical downstream effector is serum and glucocorticoid-regulated kinase-1 (SGK-1) rather than Akt. Our data also indicate that oncogenic Ras blocks anoikis by diminishing expression of the phosphatase PHLPP1 (PH Domain and Leucine-Rich Repeat Protein Phosphatase 1), which promotes anoikis through the activation of p38 MAPK. Thus, our study represents a novel paradigm whereby oncogene-initiated signal transduction can promote the survival of ECM-detached cells through divergent downstream effectors.
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Affiliation(s)
- J A Mason
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - C A Davison-Versagli
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - A K Leliaert
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - D J Pape
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - C McCallister
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - J Zuo
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - S M Durbin
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - C L Buchheit
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - S Zhang
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - Z T Schafer
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
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Huynh N, VonMoss L, Smith D, Rahman I, Felemban MF, Zuo J, Rody WJ, McHugh KP, Holliday LS. Characterization of Regulatory Extracellular Vesicles from Osteoclasts. J Dent Res 2016; 95:673-9. [PMID: 26908631 DOI: 10.1177/0022034516633189] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Extracellular vesicles (EVs), which include exosomes and ectosomes/microvesicles, have emerged as important intercellular regulators. EVs can interact with surface receptors of target cells and can transport luminal components, including messenger RNAs (mRNAs), microRNAs, and enzymes, to the cytosol of the target cell. Here, we show that hematopoietic cells grown in culture shed exosome-like EVs as they differentiate from preosteoclasts into osteoclasts. These EVs were between 25 and 120 nm (mean, 40 nm) in diameter determined by transmission electron microscopy. The exosome-associated markers CD63 and EpCAM were enriched in the isolated EVs while markers of Golgi and endoplasmic reticulum were not detected. Treatment of isolated hematopoietic cells with EVs did not affect their receptor activator of nuclear factor κB-ligand (RANKL)-stimulated differentiation into osteoclasts. However, EVs from osteoclast precursors promoted 1,25-dihydroxyvitamin D3-dependent osteoclast formation in whole mouse marrow cultures, and EVs from osteoclast-enriched cultures inhibited osteoclastogenesis in the same cultures. These data suggested that osteoclast-derived EVs are paracrine regulators of osteoclastogenesis. EVs from mature osteoclasts contained receptor activator of nuclear factor κB (RANK). Immunogold labeling showed RANK was enriched in 1 in every 32 EVs isolated from osteoclast-enriched cultures. Depletion of RANK-rich EVs relieved the ability of osteoclast-derived EVs to inhibit osteoclast formation in 1,25-dihydroxyvitamin D3-stimulated marrow cultures. In summary, we show for the first time that EVs released by osteoclasts are novel regulators of osteoclastogenesis. Our data suggest that RANK in EVs may be mechanistically linked to the inhibition of osteoclast formation. RANK present in EVs may function by competitively inhibiting the stimulation of RANK on osteoclast surfaces by RANKL similar to osteoprotegerin. RANK-rich EVs may also take advantage of the RANK/RANKL interaction to target RANK-rich EVs to RANKL-bearing cells for the delivery of other regulatory molecules.
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Affiliation(s)
- N Huynh
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, FL, USA
| | - L VonMoss
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, FL, USA
| | - D Smith
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, FL, USA
| | - I Rahman
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, FL, USA
| | - M F Felemban
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, FL, USA
| | - J Zuo
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, FL, USA
| | - W J Rody
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, FL, USA
| | - K P McHugh
- Department of Periodontics, University of Florida College of Dentistry, Gainesville, FL, USA
| | - L S Holliday
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, FL, USA Department of Anatomy and Cell Biology, University of Florida College of Medicine, Gainesville, FL, USA
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Yang YJ, Han YY, Chen K, Zhang Y, Liu X, Li S, Wang KQ, Ge JB, Liu W, Zuo J. TonEBP modulates the protective effect of taurine in ischemia-induced cytotoxicity in cardiomyocytes. Cell Death Dis 2015; 6:e2025. [PMID: 26673669 PMCID: PMC4720904 DOI: 10.1038/cddis.2015.372] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Revised: 11/18/2015] [Accepted: 11/19/2015] [Indexed: 11/09/2022]
Abstract
Taurine, which is found at high concentration in the heart, exerts several protective actions on myocardium. Physically, the high level of taurine in heart is maintained by a taurine transporter (TauT), the expression of which is suppressed under ischemic insult. Although taurine supplementation upregulates TauT expression, elevates the intracellular taurine content and ameliorates the ischemic injury of cardiomyocytes (CMs), little is known about the regulatory mechanisms of taurine governing TauT expression under ischemia. In this study, we describe the TonE (tonicity-responsive element)/TonEBP (TonE-binding protein) pathway involved in the taurine-regulated TauT expression in ischemic CMs. Taurine inhibited the ubiquitin-dependent proteasomal degradation of TonEBP, promoted the translocation of TonEBP into the nucleus, enhanced TauT promoter activity and finally upregulated TauT expression in CMs. In addition, we observed that TonEBP had an anti-apoptotic and anti-oxidative role in CMs under ischemia. Moreover, the protective effects of taurine on myocardial ischemia were TonEBP dependent. Collectively, our findings suggest that TonEBP is a core molecule in the protective mechanism of taurine in CMs under ischemic insult.
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Affiliation(s)
- Y J Yang
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Y Y Han
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - K Chen
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Y Zhang
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - X Liu
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - S Li
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - K Q Wang
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - J B Ge
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - W Liu
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - J Zuo
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, China
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Ren L, Zuo J, Li G, Zheng L, Zhang Z, Ye H, Xia W I, Feng D. EFFECTS OF THE COMBINATION OF NON-PHYTATE PHOSPHORUS, PHYTASE AND 25-HYDROXYCHOLECALCIFEROL ON THE PERFORMANCE AND MEAT QUALITY OF BROILER CHICKENS. Rev Bras Cienc Avic 2015. [DOI: 10.1590/1516-635x1703371-380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- L Ren
- South China Agriculture University, China; Guangdong Ocean University, China
| | - J Zuo
- South China Agriculture University, China
| | - G Li
- South China Agriculture University, China
| | - L Zheng
- South China Agriculture University, China
| | - Z Zhang
- South China Agriculture University, China
| | - H Ye
- South China Agriculture University, China
| | - I Xia W
- South China Agriculture University, China
| | - D Feng
- South China Agriculture University, China
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Zuo J, Zhang CW, Zhou X, Wei W, Wang YL. Characterization of abnormal epithelium after laser-assisted subepithelial keratectomy using in vivo confocal microscopy. Genet Mol Res 2015; 14:4749-56. [PMID: 25966249 DOI: 10.4238/2015.may.11.7] [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: 11/03/2022]
Abstract
This study compared the abnormal corneal epithelium after laser-assisted subepithelial keratectomy (LASEK) with dystrophic cornea using in vivo using confocal microscopy (IVCM) and examined the effects of the abnormal epithelium on postoperative recovery of uncorrected distance visual acuity (UDVA) and sub-basal nerve plexus regeneration. The UDVA and wound healing were examined in 50 eyes of 25 patients undergoing LASEK at 1 week, 1 month, and 1 year postoperatively, including the visual acuity, slit lamp microscopy, and IVCM. After 1 week, the corneal epithelium was healed in all patients, but abnormal epithelial cells were detected in 33/50 patients using IVCM. Abnormal cells were limited to the surgical margin, and highly reflective granules were observed underneath. At 1 month and 1 year postoperatively, the abnormal epithelium was unchanged in size. At 1 year postoperatively, there were clear differences between the sub-basal nerve plexus in the normal and abnormal epithelium. At 1 month postoperatively, the UDVA was >1.0 in 88% of patients, which increased to 94% at 1 year, and there was no clear difference in the UDVA between abnormal (N = 33) and normal (N = 17) epithelium. After LASEK, abnormal epithelial cells may arise at the margin of the epithelial flap and persist 1 year postoperatively accompanied by poor regeneration of the sub-basal nerve plexus. However, this does not affect the UDVA postoperatively. The abnormal epithelium may be caused by residual necrotic basal cell debris on the epithelial basement membrane and abnormal neurotrophic metabolism between the corneal epithelium and nerve plexus.
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Affiliation(s)
- J Zuo
- Department of First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China
| | - C W Zhang
- Department of Ophthalmology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - X Zhou
- Department of Ophthalmology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - W Wei
- Department of Ophthalmology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Y L Wang
- Department of Ophthalmology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
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Cui G, Diao H, Wei Y, Chen J, Gao H, Zuo J, Yang Y, Tang L, Cao H, Chen Y, Li L. Immune influence of pregnancy on human H7N9 infection: a case report. Rev Port Pneumol (2006) 2015; 21:157-62. [PMID: 25926242 DOI: 10.1016/j.rppnen.2014.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 11/05/2014] [Accepted: 11/06/2014] [Indexed: 01/31/2023] Open
Abstract
INTRODUCTION H7N9 infection has raised serious concerns worldwide. Pregnant women were considered to be at a high risk of influenza infection. Normal pregnancy was dependent on T helper (Th) 2 deviation. However, whether pregnancy influences the immune status of influenza H7N9 patients has not been reported. CASE REPORT Here, we reported a case of pregnant woman in the first trimester with H7N9 infection compared with the two non-pregnant female H7N9 patients for clinical features and relevant immunological changes. We found that there were no differences in plasma levels of Th1 and Th2 cytokines between the pregnant and non-pregnant patients, and there was no Th2 deviation in the acute phase. However, the Th2 deviation was recurrent along with the clearance of infection in the H7N9 pregnant patient. CONCLUSION These cases highlighted that the pregnant patient infected with H7N9 could induce an effective Th1 immune response equal to that of non-pregnant patients with H7N9 virus infection, although the pregnancy itself could lead to a Th2 deviation. These data suggested that pregnant patients could acquire a similar antiviral response for H7N9 infection versus non-pregnant patients.
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Affiliation(s)
- G Cui
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - H Diao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China.
| | - Y Wei
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - J Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - H Gao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - J Zuo
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Y Yang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - L Tang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - H Cao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Y Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - L Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China.
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Niu L, Chen J, He T, Liao M, Yuan Y, Zeng J, Li J, Zuo J, Xu K. P0075 Combination treatment with comprehensive cryoablation and immunotherapy in metastatic pancreatic cancer. Eur J Cancer 2014. [DOI: 10.1016/j.ejca.2014.03.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhang Z, Wua B, Niu L, Mu F, Chen J, Li J, Zuo J, Xu K. P0077 Combination percutaneous cryotherapy and iodine-125 seed implantation for unresectable malignant thymoma: Experience in 19 patients. Eur J Cancer 2014. [DOI: 10.1016/j.ejca.2014.03.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chen Z, Zuo J, Zou J, Sun Y, Liu W, Lai Y, Zhong B, Su C, Tan M, Luo H. Cellular immunity following video-assisted thoracoscopic and open resection for non-thymomatous myasthenia gravis. Eur J Cardiothorac Surg 2013; 45:646-51. [DOI: 10.1093/ejcts/ezt443] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Toro EJ, Zuo J, Gutierrez A, Guiterrez A, La Rosa RL, Gawron AJ, Bradaschia-Correa V, Arana-Chavez V, Dolce C, Rivera MF, Kesavalu L, Bhattacharyya I, Neubert JK, Holliday LS. Bis-enoxacin inhibits bone resorption and orthodontic tooth movement. J Dent Res 2013; 92:925-31. [PMID: 23958763 DOI: 10.1177/0022034513501876] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
UNLABELLED Enoxacin inhibits binding between the B-subunit of vacuolar H(+)-ATPase (V-ATPase) and microfilaments, and also between osteoclast formation and bone resorption in vitro. We hypothesized that a bisphosphonate derivative of enoxacin, bis-enoxacin (BE), which was previously studied as a bone-directed antibiotic, might have similar activities. BE shared a number of characteristics with enoxacin: It blocked binding between the recombinant B-subunit and microfilaments and inhibited osteoclastogenesis in cell culture with IC50s of about 10 µM in each case. BE did not alter the relative expression levels of various osteoclast-specific proteins. Even though tartrate-resistant acid phosphatase 5b was expressed, proteolytic activation of the latent pro-enzyme was inhibited. However, unlike enoxacin, BE stimulated caspase-3 activity. BE bound to bone slices and inhibited bone resorption by osteoclasts on BE-coated bone slices in cell culture. BE reduced the amount of orthodontic tooth movement achieved in rats after 28 days. Analysis of these data suggests that BE is a novel anti-resorptive molecule that is active both in vitro and in vivo and may have clinical uses. ABBREVIATIONS BE, bis-enoxacin; V-ATPase, vacuolar H(+)-ATPase; TRAP, tartrate-resistant acid phosphatase; αMEM D10, minimal essential media, alpha modification with 10% fetal bovine serum; SDS-PAGE, sodium dodecyl sulfate-polyacrylamide gel electrophoresis; RANKL, receptor activator of nuclear factor kappa B-ligand; NFATc1, nuclear factor of activated T-cells; ADAM, a disintegrin and metalloprotease domain; OTM, orthodontic tooth movement.
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Affiliation(s)
- E J Toro
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, FL 32610, USA
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Fan YH, Dong LL, Bi CF, Liu SB, Zhang X, Zuo J, Wang Q. Synthesis, crystal structure, and DNA interaction and cleavage studies of a novel dinuclear Cu(II) complex with 3-indolylacetic acid. RUSS J COORD CHEM+ 2012. [DOI: 10.1134/s1070328412070032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhang N, Fan YH, Bi CF, Zuo J, Wang Q. Synthesis and crystal structure of a new nickel(II) coordination polymer based on Schiff base. RUSS J COORD CHEM+ 2012. [DOI: 10.1134/s1070328412050119] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Huang Y, Wu L, Zuo J, Li N, An J, Hu J, Huang M. The role of HPV genotypes and persistence in follow-up of cervical intraepithelial neoplasia after treatment. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.1561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Wang Q, Bi CF, Fan YH, Zhang X, Zuo J, Liu SB. A novel copper(II) complex with schiff base derived from o-vanillin and L-methionine: Syntheses and crystal structures. RUSS J COORD CHEM+ 2011. [DOI: 10.1134/s1070328411020138] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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40
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Zeng Q, Zhang G, Leung C, Zuo J. Studies of wall painting fragments from Kaiping Diaolou by SEM/EDX, micro Raman and FT-IR spectroscopy. Microchem J 2010. [DOI: 10.1016/j.microc.2010.05.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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41
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Zuo J, Torres E. Comparison of adsorption of mercaptopropyltrimethoxysilane on amphiphilic TiO2 and hydroxylated SiO2. Langmuir 2010; 26:15161-8. [PMID: 20839828 DOI: 10.1021/la102221v] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Alkylsilane 3-mercaptopropyltrimethoxysilane (3MPT) monolayers with a functional end group -SH were used to immobilize Ag colloidal nanoparticles on photoinduced amphiphilic TiO(2) and hydroxylated SiO(2) surfaces. The differences in the adsorption of 3MPT and the immobilization of Ag colloids on both surfaces were studied. Under identical experimental conditions, 3MPT islands were formed on UV-exposed TiO(2) surfaces compared to continuous and flat monolayers formed on SiO(2). The significant structural differences found for monolayers of 3MPT on TiO(2) could be explained in terms of the different densities of hydroxyl groups and the microstructure of hydrophilic domains induced by UV irradiation. The surface properties were characterized using contact angle measurements and XPS. XPS showed an increase in the hydroxyl group's density and a decrease in the number of adsorbed hydrocarbon films on the TiO(2) surface as a function of the UV irradiation time. The density of the adsorbed 3MPT on TiO(2) surfaces as a function of the UV irradiation time was quantitatively related to the cosine of the water contact angles. Such a 3MPT distribution influenced the subsequent adsorption of Ag colloids and resulted in more isolated nanoparticles on the modified TiO(2) with a narrower size distribution.
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Affiliation(s)
- J Zuo
- Department of Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Strasse 1, D-40237 Düsseldorf, Germany
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Dai F, Feng D, Cao Q, Ye H, Zhang C, Xia W, Zuo J. Developmental differences in carcass, meat quality and muscle fibre characteristics between the Landrace and a Chinese native pig. S AFR J ANIM SCI 2010. [DOI: 10.4314/sajas.v39i4.51126] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abstract
Minimally Invasive Surgery (MIS) has become one of the most important research areas in the field of medical engineering. Robotic colonoscopy is a typical medical procedure that complies with the requirements of MIS. In this paper, a new novel miniature robot for intestinal inspection based on the earthworm is described; its diameter and length are 7.5 mm and 120 mm respectively. The micro robot is driven by a DC motor which has good performance and sufficient power. In this paper the structure and locomotion mechanism of this robot are introduced; the mechanical model is built; and simulation is carried out. The control system and software design are also discussed in detail. Some actuating characteristic experiments have been performed, where the micro robot creeps in declining rubber tubes. The experimental results are in accord with simulation results, and show that this kind of robot can move reliably in horizontal and certain declining tubes. This research has laid a foundation for the application of the miniature robot endoscope.
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Affiliation(s)
- J Zuo
- Institute of Precision Engineering and Intelligent Microsystem Shanghai JiaoTong University No. 1954 Huashan Road Shanghai 200030, P.R. China
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Abstract
The collapse and stability of carbon nanotubes (CNTs) have important implications for their synthesis and applications. While nanotube collapse has been observed experimentally, the conditions for the collapse, especially its dependence on tube structures, are not clear. We have studied the energetics of the collapse of single- and multi-wall CNTs via atomistic simulations. The collapse is governed by the number of walls and the radius of the inner-most wall. The collapsed structure is energetically favored about a certain diameter, which is 4.12, 4.96 and 5.76 nm for single-, double- and triple-wall CNTs, respectively. The CNT chirality also has a strong influence on the collapsed structure, leading to flat, warped and twisted CNTs, depending on the chiral angle.
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Affiliation(s)
- J Xiao
- Department of Engineering Mechanics, Tsinghua University, Beijing 100084, People's Republic of China
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Cheatham MA, Zheng J, Huynh KH, Du GG, Edge RM, Anderson CT, Zuo J, Ryan AF, Dallos P. Evaluation of an independent prestin mouse model derived from the 129S1 strain. Audiol Neurootol 2007; 12:378-90. [PMID: 17664869 DOI: 10.1159/000106481] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [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: 10/18/2006] [Accepted: 04/20/2007] [Indexed: 11/19/2022] Open
Abstract
Studies using the prestin knockout mouse indicate that removal of the outer hair cell (OHC) motor protein is associated with loss of sensitivity, frequency selectivity and somatic electromotility. Here we provide data obtained from another prestin mouse model that was produced commercially. In vivo electrical recordings from the round window indicate that the phenotype is similar to that of the original knockout generated by the Zuo group at St. Jude Children's Research Hospital. Hence, compound action potential (CAP) thresholds are shifted in a frequency-dependent manner and CAP tuning curves at 12 kHz are flat for masker frequencies between 3 and 18 kHz. Although CAP input-output functions at 6 kHz show a shift in sensitivity at low levels, responses approach wild-type magnitudes at high levels where the cochlear amplifier has less influence. In order to confirm that the loss of sensitivity and frequency selectivity is due to loss of prestin, we performed immunohistochemistry using a prestin antibody. Cochlear segments from homozygous mutant mice showed no fluorescence, while wild-type mice displayed a fluorescent signal targeted to the OHC's lateral membrane. Absence of prestin protein was confirmed using LDS-PAGE/Western blot analysis. These results indicate that the loss of function phenotype is associated with loss of prestin protein. Lack of prestin protein also results in a shortening of OHC length to approximately 60% of wild-type, similar to that reported previously by Liberman's group. The linkage shown between the loss of prestin protein and abnormal cochlear function validates the original knockout and attests to the importance of OHC motor function in the auditory periphery.
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MESH Headings
- Animals
- Auditory Threshold/physiology
- Cochlear Microphonic Potentials/genetics
- Disease Models, Animal
- Exons/genetics
- Gene Targeting
- Genotype
- Hair Cells, Auditory, Outer/pathology
- Hair Cells, Auditory, Outer/physiology
- Heterozygote
- Homozygote
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Mutant Strains
- Mice, Transgenic
- Microscopy, Confocal
- Molecular Motor Proteins/genetics
- Phenotype
- RNA, Messenger/genetics
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Affiliation(s)
- M A Cheatham
- Department of Communication Sciences and Disorders, The Hugh Knowles Center, Evanston, IL, USA.
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Abstract
Osteoclasts play a vital role in orthodontic tooth movement. Transactivation of nuclear factor kappaB (NFkappaB) by phosphorylation of the p65 component of NFkappaB at amino acid 536 (p65*(536)) plays a role in osteoclast differentiation stimulated by receptor activator of nuclear factor kappaB-ligand (RANK-L). We hypothesized that this transactivation pathway might be involved in the responses of alveolar bone cells during orthodontic tooth movement. We detected sharp increases in the levels of p65*(536) 3 and 12 hrs after the application of orthodontic stimuli in rats. In cell culture, osteoclast-like cells displayed no changes in p65*(536) in response to RANK-L, but levels rapidly increased after the cells were mechanically scraped. We conclude that p65*(536) is produced rapidly in response to orthodontic stimuli and mechanical insults, and may be important in bone remodeling associated with orthodontic tooth movement.
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Affiliation(s)
- J Zuo
- Department of Orthodontics, 1600 SW Archer Road, Campus Box 100444, University of Florida College of Dentistry, Gainesville, FL 32610, USA
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Zuo J, Walsh EG, Twieg DB. Flow SS-PARSE: a new method for rapid imaging and mapping of blood flow velocity. Conf Proc IEEE Eng Med Biol Soc 2007; 2006:530-3. [PMID: 17271730 DOI: 10.1109/iembs.2004.1403211] [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] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
A new method for flow velocity mapping of blood is presented here. Instead of the conventional approach of employing two images (velocity sensitive and control) to generate velocity information, in the new method the velocity is determined directly by solving an inverse problem. This technique is an application of single shot - parameter assessment by retrieval from signal encoding (SS-PARSE). Simulations have been done to demonstrate the feasibility of the method. The velocity measurement range of the prototype version is from -50cm/s to 50cm/s, roughly appropriate for future applications in blood flow measurement of carotid arteries.
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Affiliation(s)
- J Zuo
- Dept. of Biomedical Eng., Alabama Univ., Birmingham, AL, USA
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Abstract
The current study set out to compare the temporal relationships of Rho activity, Rho kinase (ROCK) activity and tone following cholinergic stimulation in the presence and absence of three different bronchodilators. Bovine trachea challenged with a half-maximally effective concentration of carbachol (CCh) was flash-frozen at different times, then assayed for Rho (rhotekin pull-down assay) and ROCK (Western blot; radiometric assay) activities. Rho was activated within 30 s, followed by ROCK (peak at 2 min); both returned to baseline by 20 min, although tone continued to rise over that period. Increasing the concentration of CCh greatly increased the magnitudes and rates of stimulation of Rho, ROCK and tone. These CCh-induced changes were next compared in tissues pre-treated with isoproterenol, salmeterol or the nitric oxide donor S-nitroso-N-acetylpenicillamine (SNAP). Neither the time course nor the magnitude of Rho-activation were reduced by the beta-agonists; SNAP slowed Rho activation but it did not alter the peak magnitude. These observations were mirrored in ROCK activation and contraction. When tissues were pre-constricted with CCh and then challenged with the bronchodilators, however, all three agonists reversed cholinergically stimulated Rho, ROCK and myosin light chain kinase activities as well as tone. In conclusion, bronchodilators can suppress RhoA and Rho kinase activities, although their major effect appears to be on myosin light chain kinase activity.
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Affiliation(s)
- C Liu
- Firestone Institute for Respiratory Health, St. Joseph's Hospital and the Dept of Medicine, McMaster University, Hamilton, Ontario, Canada
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Yang Y, Zuo J, Quan Z, Lee S, Shen P, Gu X. Study on performance of granular ANAMMOX process and characterization of the microbial community in sludge. Water Sci Technol 2006; 54:197-207. [PMID: 17163029 DOI: 10.2166/wst.2006.812] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Anaerobic Ammonium Oxidation (ANAMMOX) is a novel biological nitrogen removal process, which is regarded as the most economical process at present. In this paper, two lab-scale UASB reactors, one of which was inoculated with the mixture of anaerobic sludge and aerobic sludge, the other with river sediments, were started up, using the inorganic synthetic water containing ammonium and nitrite as influent. After 421 days' and 356 days operation respectively, the ammonium removal efficiencies in two reactors reached 94% and 86% respectively, the total nitrogen volumetric loading rates were 2.5 and 1.6 kgN/m3 x d. ANAMMOX granules were obtained in both reactors; the color of most granules was brown, but some of them were red. Based on the observation and studies on the microstructure of the granules, three kinds of ANAMMOX granular sludge formation mechanisms were proposed: adhering biofilm and disintegrated granular core mechanism, adhering biofilm and inorganic core mechanism and the self-coherence mechanism. For phylogenetic characterization of anaerobic ammonium oxidizers, 16S rDNA approach was performed using Planctomycetales-specific PCR amplification. The dominant anammox bacteria occupied more than 90% of Planctomycetales-specific bacteria, and 27% of all bacteria in reactors. The dominant anammox bacteria distantly related to all currently reported candidate anammox genera. Functional gene of amoA was analyzed to investigate the 'aerobic' ammonium-oxidizing bacteria in beta-Proteobacteria. The 'aerobic' ammonium-oxidizing bacteria were more diverse than anammox bacteria, but most of them clustered in anoxic ammonium-oxidizing Nitrosomonas eutropha/europaea groups. The composition of 'aerobic' ammonium-oxidizing bacteria is only 2% of all of bacteria in reactors.
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Affiliation(s)
- Y Yang
- Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China.
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50
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Abstract
Targeted deletion of the prestin gene reduces cochlear sensitivity and eliminates both frequency selectivity and outer hair cell (OHC) somatic electromotility. In addition, it has been reported by Liberman and colleagues that F2 generation heterozygotes exhibit a 6 dB reduction in sensitivity, as well as a decrease in protein and electromotility. Considering that the active process is non-linear, a halving of somatic electromotility would be expected to produce a much larger change in sensitivity. We therefore re-evaluated comparisons between heterozygotes and wildtype mice using both in vivo and in vitro electrophysiology, as well as molecular biology. Data reported here for F3-F5 generation mice indicate that compound action potential thresholds and tuning curves, as well as the cochlear microphonic, are similar in heterozygotes and wildtype controls. Measurements of non-linear capacitance in isolated OHCs demonstrate that charge density, as well as the voltage dependence and sensitivity of motor function, is indistinguishable in the two genotypes, as is somatic electromotility. In addition, both immunocytochemistry and western blot analysis in young adult mice suggest that prestin protein in heterozygotes is near normal. In contrast, prestin mRNA is always less than in wildtype mice at all ages tested. Results from F3-F5 generation mice suggest that one copy of the prestin gene is capable of compensating for the deleted copy and that heterozygous mice do not suffer peripheral hearing impairment.
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Affiliation(s)
- M A Cheatham
- Department of Communication Sciences and Disorders, Northwestern University, Evanston, IL 60208-3550, USA.
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