1
|
Yang D, Wu Y, Wan Z, Xu Z, Li W, Yuan P, Shang Q, Peng J, Tao L, Chen Q, Dan H, Xu H. HISMD: A Novel Immune Subtyping System for HNSCC. J Dent Res 2023; 102:270-279. [PMID: 36333876 DOI: 10.1177/00220345221134605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Immune subtyping is an important way to reveal immune heterogeneity, which may contribute to the diversity of the progression and treatment in head and neck squamous cell carcinoma (HNSCC). However, reported immune subtypes mainly focus on levels of immune infiltration and are mostly based on a mono-omics profile. This study aimed to identify a comprehensive immune subtype for HNSCC via multi-omics clustering and build a novel subtype prediction system for clinical application. Data were obtained from The Cancer Genome Atlas database and our independent multicenter cohort. Multi-omics clustering was performed to identify 3 clusters of 499 patients in The Cancer Genome Atlas based on immune-related gene expression and somatic mutations. The immune characteristics and biological features of the obtained clusters were revealed by bioinformatics, and 3 immune subtypes were identified: 1) adaptive immune activation subtype predominantly enriched in T cells, 2) innate immune activation subtype predominantly enriched in macrophages, and 3) immune desert subtype. Subsequently, the clinical implications of each subtype were analyzed per clinical epidemiology. We found that adaptive immune activation showed better survival outcomes and had a similar response to chemotherapy with innate immune activation, whereas immune desert might be relatively resistant to chemotherapy. Moreover, a subtype prediction system was developed by deep learning with whole slide images and named HISMD: HNSCC Immune Subtypes via Multi-omics and Deep Learning. We endowed HISMD with interpretability through image-based key feature extraction. The clinical implications, biological significances, and predictive stability of HISMD were successfully verified by using our independent multicenter cohort data set. In summary, this study revealed the immune heterogeneity of HNSCC and obtained a novel, highly accurate, and interpretable immune subtyping prediction system. For clinical implementation in the future, additional validation and utility studies are warranted.
Collapse
Affiliation(s)
- D Yang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Wu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Z Wan
- Department of Pathology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Z Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - W Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - P Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Q Shang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - J Peng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - L Tao
- College of Mathematics, Sichuan University, Chengdu, China
| | - Q Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Affiliated Stomatology Hospital, Zhejiang University School of Stomatology, Hangzhou, China
| | - H Dan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - H Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| |
Collapse
|
2
|
Geng X, Yang Z, Liao J, Mirkheshti N, Mehra R, Cullen K, Dan H. Targeting PI3Kα/δ and the ErbB Family of Protein-Tyrosine Kinases in Cisplatin-Resistant Head and Neck Squamous Cell Carcinomas. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2021.12.112] [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: 10/18/2022]
|
3
|
Abstract
Some oral squamous cell carcinomas (OSCCs) originate from preexisting oral potentially malignant disorders (OPMDs). Oral leukoplakia (OLK) is the most common and typical OPMD in the clinic, so treatment for it is essential to reduce OSCC incidence. Local chemotherapy is an option other than surgery considering the superficial site of OLK. However, there are no standardized drugs applied to OLK, and traditionally used chemotherapeutic drugs revealed limited efficacy for lack of adhesion. Hence, there is a growing demand to prepare new agents that combine mucoadhesion with an anti-OLK effect. Here, an isoguanosine-tannic acid (isoG-TA) supramolecular hydrogel via dynamic borate esters was successfully fabricated based on isoG and TA. Previously reported guanosine-TA (G-TA) hydrogel was also explored for an anti-OLK effect. Both gels not only exhibited ideal adhesive properties but also integrated anti-OLK activities in one system. In vitro cell viability indicated that isoG and TA inhibited the proliferation of dysplastic oral keratinocytes (DOKs). The in vivo OLK model evidence revealed that both gels showed potential to prevent OLK canceration. In addition, the probable anti-DOK mechanisms of isoG and TA were investigated. The results indicated that isoG could bind to adenosine kinase (ADK) and then affected the mammalian target of rapamycin (mTOR) pathway to inhibit DOK proliferation. TA could significantly and continuously reduce reactive oxygen species (ROS) in DOKs through its antioxidant effect. ROS plays an important role in the progression of cell cycle. We proved that the low level of ROS may inhibit DOK proliferation by inducing G0/G1 arrest in the cell cycle. Altogether, this study innovatively fabricated an isoG-TA hydrogel with ideal adhesion, and both isoG and TA showed in vitro inhibition of DOKs. Moreover, both isoG-TA and G-TA hydrogels possessed potential in delaying the malignant transformation of OLK, and the G-TA hydrogel showed a better statistical effect, providing an effective strategy for controlling OLK.
Collapse
Affiliation(s)
- T Ding
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, P. R. China
| | - J Zou
- West China Hospital, Sichuan University, Chengdu, Sichuan, P. R. China
| | - J Qi
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, P. R. China
| | - H Dan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, P. R. China
| | - F Tang
- The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine and Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, P. R. China
| | - H Zhao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, P. R. China
| | - Q Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, Med-X Center for Materials, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, P. R. China
| |
Collapse
|
4
|
Goodman KM, Katsamba PS, Rubinstein R, Ahlsén G, Bahna F, Mannepalli S, Dan H, Sampogna RV, Shapiro L, Honig B. How clustered protocadherin binding specificity is tuned for neuronal self-/nonself-recognition. eLife 2022; 11:e72416. [PMID: 35253643 PMCID: PMC8901172 DOI: 10.7554/elife.72416] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 01/26/2022] [Indexed: 12/30/2022] Open
Abstract
The stochastic expression of fewer than 60 clustered protocadherin (cPcdh) isoforms provides diverse identities to individual vertebrate neurons and a molecular basis for self-/nonself-discrimination. cPcdhs form chains mediated by alternating cis and trans interactions between apposed membranes, which has been suggested to signal self-recognition. Such a mechanism requires that cPcdh cis dimers form promiscuously to generate diverse recognition units, and that trans interactions have precise specificity so that isoform mismatches terminate chain growth. However, the extent to which cPcdh interactions fulfill these requirements has not been definitively demonstrated. Here, we report biophysical experiments showing that cPcdh cis interactions are promiscuous, but with preferences favoring formation of heterologous cis dimers. Trans homophilic interactions are remarkably precise, with no evidence for heterophilic interactions between different isoforms. A new C-type cPcdh crystal structure and mutagenesis data help to explain these observations. Overall, the interaction characteristics we report for cPcdhs help explain their function in neuronal self-/nonself-discrimination.
Collapse
Affiliation(s)
- Kerry Marie Goodman
- Zuckerman Mind, Brain and Behavior Institute, Columbia UniversityNew YorkUnited States
| | - Phinikoula S Katsamba
- Zuckerman Mind, Brain and Behavior Institute, Columbia UniversityNew YorkUnited States
| | - Rotem Rubinstein
- School of Neurobiology, Biochemistry and Biophysics, Tel Aviv UniversityTel AvivIsrael
- Sagol School of Neuroscience, Tel Aviv UniversityTel AvivIsrael
| | - Göran Ahlsén
- Zuckerman Mind, Brain and Behavior Institute, Columbia UniversityNew YorkUnited States
| | - Fabiana Bahna
- Zuckerman Mind, Brain and Behavior Institute, Columbia UniversityNew YorkUnited States
| | - Seetha Mannepalli
- Zuckerman Mind, Brain and Behavior Institute, Columbia UniversityNew YorkUnited States
| | - Hanbin Dan
- Department of Medicine, Division of Nephrology, Columbia UniversityNew YorkUnited States
| | - Rosemary V Sampogna
- Department of Medicine, Division of Nephrology, Columbia UniversityNew YorkUnited States
| | - Lawrence Shapiro
- Zuckerman Mind, Brain and Behavior Institute, Columbia UniversityNew YorkUnited States
- Department of Biochemistry and Molecular Biophysics, Columbia UniversityNew YorkUnited States
| | - Barry Honig
- Zuckerman Mind, Brain and Behavior Institute, Columbia UniversityNew YorkUnited States
- Department of Medicine, Division of Nephrology, Columbia UniversityNew YorkUnited States
- Department of Biochemistry and Molecular Biophysics, Columbia UniversityNew YorkUnited States
- Department of Systems Biology, Columbia UniversityNew YorkUnited States
| |
Collapse
|
5
|
Dan H, Ruan T, Sampogna RV. Circadian Clock Regulation of Developmental Time in the Kidney. Cell Rep 2021; 31:107661. [PMID: 32433970 DOI: 10.1016/j.celrep.2020.107661] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 10/31/2019] [Revised: 03/06/2020] [Accepted: 04/28/2020] [Indexed: 12/14/2022] Open
Abstract
We report the emergence of an endogenous circadian clock that regulates organogenesis in mouse fetal kidney. We detect circadian rhythms both in vivo with transcriptional profiling and ex vivo by bioluminescence. High-resolution structural analysis of embryonic explants reveals that global or local clock disruption results in defects that resemble human congenital abnormalities of the kidney. The onset of fetal rhythms strongly correlates with the timing of a distinct transition in branching and growth rates during a gestational window of high fetal growth demands. Defects in clock mutants typically have been attributed to accelerated aging; however, our study establishes a role for the fetal circadian clock as a developmental timer that regulates the pathways that control organogenesis, branching rate, and nephron number and thus plays a fundamental role in kidney development.
Collapse
Affiliation(s)
- Hanbin Dan
- Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
| | - Thomas Ruan
- Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA
| | - Rosemary V Sampogna
- Department of Medicine, Columbia University Medical Center, New York, NY 10032, USA.
| |
Collapse
|
6
|
Luo X, Jiang Y, Chen F, Wei Z, Qiu Y, Xu H, Tian G, Gong W, Yuan Y, Feng H, Zhong L, Ji N, Xu X, Sun C, Li T, Li J, Feng X, Deng P, Zeng X, Zhou M, Zhou Y, Dan H, Jiang L, Chen Q. ORAOV1-B Promotes OSCC Metastasis via the NF-κB-TNFα Loop. J Dent Res 2021; 100:858-867. [PMID: 33655785 DOI: 10.1177/0022034521996339] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 02/05/2023] Open
Abstract
Metastasis, a powerful prognostic indicator of oral squamous cell carcinoma (OSCC), is chiefly responsible for poor cancer outcomes. Despite an increasing number of studies examining the mechanisms underlying poor outcomes, the development of potent strategies is hindered by insufficient characterization of the crucial regulators. Long noncoding RNAs (lncRNAs) have recently been gaining interest as significant modulators of OSCC metastasis; however, the detailed mechanisms underlying lncRNA-mediated OSCC metastasis remain relatively uncharacterized. Here, we identified a novel alternative splice variant of oral cancer overexpressed 1 (ORAOV1), named as ORAOV1-B, which was subsequently validated as an lncRNA and correlated with OSCC lymph node metastasis; significantly increased invasion and migration were observed in ORAOV1-B-overexpressing OSCC cells. RNA pulldown and mass spectrometry identified Hsp90 as a direct target of ORAOV1-B, and cDNA microarrays suggested TNFα as a potential downstream target of ORAOV1-B. ORAOV1-B was shown to directly bind to and stabilize Hsp90, which maintains the function of client proteins, receptor-interaction protein, and IκB kinase beta, thus activating the NF-κB pathway and inducing TNFα. Additionally, TNFα reciprocally enhanced p-NF-κB-p65 and the downstream epithelial-mesenchymal transition. ORAOV1-B effects were reversed by a TNFα inhibitor, demonstrating that TNFα is essential for ORAOV1-B-regulated metastatic ability. Consistent epithelial-mesenchymal transition in the ORAOV1-B group was demonstrated via an orthotopic model. In the metastatic model, ORAOV1-B significantly contributed to OSCC-related lung metastasis. In summary, the novel splice variant ORAOV1-B is an lncRNA, which significantly potentiates OSCC invasion and metastasis by binding to Hsp90 and activating the NF-κB-TNFα loop. These findings demonstrate the versatile role of ORAOV1 family members and the significance of genes located within 11q13 in promoting OSCC. ORAOV1-B might serve as an attractive OSCC metastasis intervention target.
Collapse
Affiliation(s)
- X Luo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Jiang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - F Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- The Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Z Wei
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Qiu
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
| | - H Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - G Tian
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - W Gong
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - H Feng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- XiangYa Stomatological Hospital, Central South University, Changsha, China
| | - L Zhong
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - N Ji
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - C Sun
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - T Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - J Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Feng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - P Deng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Zeng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - M Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - H Dan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - L Jiang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Q Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| |
Collapse
|
7
|
Pang Y, Dan H, Jung H, Bae N, Kim O. Depressive symptoms, professional quality of life and turnover intention in Korean nurses. Int Nurs Rev 2020; 67:387-394. [PMID: 32633425 DOI: 10.1111/inr.12600] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 05/21/2020] [Accepted: 05/22/2020] [Indexed: 12/14/2022]
Abstract
AIM The purpose of this study was to identify the effects of depressive symptoms and professional quality of life on turnover intention. BACKGROUND The high turnover rate of nurses is a critical healthcare issue globally. INTRODUCTION Nurses often experience depressive symptoms and compassion fatigue due to the efforts of patient care. The impact of such psychological health issues on turnover intention needs to be confirmed. METHODS Participants were 10 163 female nurses who completed an online or mobile survey using the Korea Nurses' Health Study. To identify the influencing factors on the turnover intention of nurses, descriptive statistics, spearman's correlation coefficients and multivariable ordinal logistic regression were performed. RESULTS The turnover intention increased by about 2.81-4.60 times when depressive symptom was moderate or more, 1.14 times when secondary traumatic stress disorder was moderate or more, and 1.54 times when burnout was moderate or more. When compassion satisfaction was moderate or high, the turnover intention decreased by 0.72 and 0.52 times. DISCUSSION Korean nurses demonstrated high levels of depressive symptoms, secondary traumatic stress and burnout, while demonstrating lower levels of compassion satisfaction. The results of this study demonstrate that depressive symptoms, secondary traumatic stress, burnout and compassion satisfaction affect turnover intention. CONCLUSIONS To reduce nurses' turnover intention, it is necessary to reduce depressive symptoms and enhance the quality of professional life. IMPLICATIONS FOR NURSING AND HEALTH POLICY Hospital managers need to maintain adequate nurse-to-patient ratios and provide nurses with a supportive work environment. Also, health policymakers need to identify factors affecting hospital nurses' turnover intention and provide strategies to address them. These conditions may reduce the excessive workload placed on nurses, thereby preventing depression and burnout and improving nurses' quality of work-life.
Collapse
Affiliation(s)
- Y Pang
- College of Nursing, Ewha Womans University, Seoul, Korea
| | - H Dan
- College of Nursing, Ewha Womans University, Seoul, Korea
| | - H Jung
- College of Nursing, Konyang University, Daejeon, Korea
| | - N Bae
- Department of Nursing Science, Seojeong University, Yangju-si Gyeonggi-do, Korea
| | - O Kim
- College of Nursing, Ewha Womans University, Seoul, Korea
| |
Collapse
|
8
|
Wang J, Batourina E, Schneider K, Souza S, Swayne T, Liu C, George CD, Tate T, Dan H, Wiessner G, Zhuravlev Y, Canman JC, Mysorekar IU, Mendelsohn CL. Polyploid Superficial Cells that Maintain the Urothelial Barrier Are Produced via Incomplete Cytokinesis and Endoreplication. Cell Rep 2019; 25:464-477.e4. [PMID: 30304685 PMCID: PMC6351079 DOI: 10.1016/j.celrep.2018.09.042] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 05/28/2018] [Accepted: 09/12/2018] [Indexed: 01/26/2023] Open
Abstract
The urothelium is an epithelia barrier lined by a luminal layer of binucleated, octoploid, superficial cells. Superficial cells are critical for production and transport of uroplakins, a family of proteins that assemble into a waterproof crystalline plaque that helps protect against infection and toxic substances. Adult urothelium is nearly quiescent, but rapidly regenerates in response to injury. Yet the mechanism by which binucleated, polyploid, superficial cells are produced remains unclear. Here, we show that superficial cells are likely to be derived from a population of binucleated intermediate cells, which are produced from mononucleated intermediate cells via incomplete cytokinesis. We show that binucleated intermediate and superficial cells increase DNA content via endoreplication, passing through S phase without entering mitosis. The urothelium can be permanently damaged by repetitive or chronic injury or disease. Identification of the mechanism by which superficial cells are produced may be important for developing strategies for urothelial repair.
Collapse
Affiliation(s)
- Jia Wang
- Department of Urology, Columbia University, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Ekatherina Batourina
- Department of Urology, Genetics, and Development and Pathology and Cell Biology, Columbia University, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Kerry Schneider
- College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | - Spenser Souza
- Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA 70112, USA
| | - Theresa Swayne
- Confocal and Specialized Microscopy Shared Resource, Herbert Irving Comprehensive Cancer Center, Columbia University, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Chang Liu
- Department of Urology, Genetics, and Development and Pathology and Cell Biology, Columbia University, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Christopher D George
- Department of Urology, Genetics, and Development and Pathology and Cell Biology, Columbia University, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Tiffany Tate
- Department of Urology, Genetics, and Development and Pathology and Cell Biology, Columbia University, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Hanbin Dan
- Department of Systems Biology, Columbia University, New York, NY 10032, USA
| | - Gregory Wiessner
- Department of Urology, Genetics, and Development and Pathology and Cell Biology, Columbia University, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Yelena Zhuravlev
- Department of Urology, Genetics, and Development and Pathology and Cell Biology, Columbia University, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Julie C Canman
- Department of Pathology and Cell Biology, Columbia University, 630 West 168th Street, New York, NY 10032, USA
| | - Indira U Mysorekar
- Departments of Obstetrics and Gynecology and Pathology and Immunology and Center for Reproductive Sciences, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Cathy Lee Mendelsohn
- Department of Urology, Genetics, and Development and Pathology and Cell Biology, Columbia University, 1130 St. Nicholas Avenue, New York, NY 10032, USA.
| |
Collapse
|
9
|
Sun S, Zhong B, Li W, Jin X, Yao Y, Wang J, Liu J, Dan H, Chen Q, Zeng X. Diagnostic immunological methods in oral mucosal diseases. Br J Dermatol 2019. [DOI: 10.1111/bjd.18057] [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]
|
10
|
Sun S, Zhong B, Li W, Jin X, Yao Y, Wang J, Liu J, Dan H, Chen Q, Zeng X. 口腔粘膜疾病的免疫学诊断方法. Br J Dermatol 2019. [DOI: 10.1111/bjd.18076] [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: 11/27/2022]
|
11
|
Sun S, Zhong B, Li W, Jin X, Yao Y, Wang J, Liu J, Dan H, Chen Q, Zeng X. Immunological methods for the diagnosis of oral mucosal diseases. Br J Dermatol 2019; 181:23-36. [PMID: 30585301 DOI: 10.1111/bjd.17589] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/21/2018] [Indexed: 02/05/2023]
Abstract
Immunological methods, which have been widely used in autoimmune blistering diseases (AIBDs) of the oral mucosa, can also be adopted as auxiliary diagnostic tools in oral lichen planus (OLP) and discoid lupus erythematosus (DLE). AIBDs, characterized by autoantibodies against structural proteins of keratinocytes or the basement membrane zone, clinically present as blisters and erosions of the oral mucosa. When atypical lesions occur, OLP or DLE may be confused with AIBDs. The improvement of diagnostic accuracy is necessary due to the significant differences in treatment and prognosis among these diseases. A variety of immunological methods are used for qualitative and quantitative detection of target antigens and autoantibodies. These methods can evaluate efficacy of treatment, monitor diseases and guide treatment decisions. In this review, we discuss the application of immunofluorescence, biochemical tests, and protein microarrays for AIBDs, OLP and DLE, as well as the differential diagnostic methods using immunological tests.
Collapse
Affiliation(s)
- S Sun
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| | - B Zhong
- Department of Otolaryngology, Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - W Li
- Department of Dermatovenereology, Rare Disease Center, West China Hospital, Sichuan University, Chengdu, China
| | - X Jin
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences and College of Stomatology, Chongqing Medical University, Chongqing, China
| | - Y Yao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China.,Department of Oral Medicine, Affiliated Hospital of Stomatology, Zunyi Medical University, Zunyi, China
| | - J Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| | - J Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| | - H Dan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Q Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| | - X Zeng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| |
Collapse
|
12
|
Goodman KM, Rubinstein R, Brasch J, Mannepalli S, Bahna F, Dan H, Maniatis T, Honig B, Shapiro L. Clustered protocadherin molecular assembly and implications for neuronal self-avoidance. Acta Crystallogr A Found Adv 2017. [DOI: 10.1107/s2053273317091884] [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: 04/03/2023] Open
|
13
|
Liu J, Chen F, Wei Z, Qiu M, Li Z, Dan H, Chen Q, Jiang L. Evaluating the efficacy of pentoxifylline in the treatment of oral submucous fibrosis: A meta-analysis. Oral Dis 2017; 24:706-716. [PMID: 28737007 DOI: 10.1111/odi.12715] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 06/30/2017] [Accepted: 07/13/2017] [Indexed: 02/05/2023]
Affiliation(s)
- J Liu
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu Sichuan China
| | - F Chen
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu Sichuan China
| | - Z Wei
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu Sichuan China
| | - M Qiu
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu Sichuan China
| | - Z Li
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu Sichuan China
| | - H Dan
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu Sichuan China
| | - Q Chen
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu Sichuan China
| | - L Jiang
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu Sichuan China
| |
Collapse
|
14
|
Goodman KM, Rubinstein R, Brasch J, Thu CA, Bahna F, Mannepalli S, Dan H, Sampogna RV, Maniatis T, Honig B, Shapiro L. Clustered protocadherin molecular assembly and implications for neuronal self-avoidance. Acta Crystallogr A Found Adv 2017. [DOI: 10.1107/s0108767317099500] [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: 11/11/2022] Open
|
15
|
|
16
|
Georgas KM, Armstrong J, Keast JR, Larkins CE, McHugh KM, Southard-Smith EM, Cohn MJ, Batourina E, Dan H, Schneider K, Buehler DP, Wiese CB, Brennan J, Davies JA, Harding SD, Baldock RA, Little MH, Vezina CM, Mendelsohn C. An illustrated anatomical ontology of the developing mouse lower urogenital tract. Development 2015; 142:1893-908. [PMID: 25968320 DOI: 10.1242/dev.117903] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Accepted: 04/01/2015] [Indexed: 01/10/2023]
Abstract
Malformation of the urogenital tract represents a considerable paediatric burden, with many defects affecting the lower urinary tract (LUT), genital tubercle and associated structures. Understanding the molecular basis of such defects frequently draws on murine models. However, human anatomical terms do not always superimpose on the mouse, and the lack of accurate and standardised nomenclature is hampering the utility of such animal models. We previously developed an anatomical ontology for the murine urogenital system. Here, we present a comprehensive update of this ontology pertaining to mouse LUT, genital tubercle and associated reproductive structures (E10.5 to adult). Ontology changes were based on recently published insights into the cellular and gross anatomy of these structures, and on new analyses of epithelial cell types present in the pelvic urethra and regions of the bladder. Ontology changes include new structures, tissue layers and cell types within the LUT, external genitalia and lower reproductive structures. Representative illustrations, detailed text descriptions and molecular markers that selectively label muscle, nerves/ganglia and epithelia of the lower urogenital system are also presented. The revised ontology will be an important tool for researchers studying urogenital development/malformation in mouse models and will improve our capacity to appropriately interpret these with respect to the human situation.
Collapse
Affiliation(s)
- Kylie M Georgas
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Jane Armstrong
- Center for Integrative Physiology, University of Edinburgh, Edinburgh EH8 9XD, UK
| | - Janet R Keast
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Christine E Larkins
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA
| | - Kirk M McHugh
- Centre for Molecular and Human Genetics, The Research Institute at Nationwide Children's Hospital and Division of Anatomy, The Ohio State University, Columbus, OH 43205/10, USA
| | - E Michelle Southard-Smith
- Division of Genetic Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Martin J Cohn
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA Department of Biology, Genetics Institute, University of Florida, Gainesville, FL 32610, USA Howard Hughes Medical Institute, University of Florida, Gainesville, FL 32610, USA
| | | | - Hanbin Dan
- Columbia University, Department of Urology, New York, NY 10032, USA
| | - Kerry Schneider
- Columbia University, Department of Urology, New York, NY 10032, USA
| | - Dennis P Buehler
- Division of Genetic Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Carrie B Wiese
- Division of Genetic Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Jane Brennan
- Center for Integrative Physiology, University of Edinburgh, Edinburgh EH8 9XD, UK
| | - Jamie A Davies
- Center for Integrative Physiology, University of Edinburgh, Edinburgh EH8 9XD, UK
| | - Simon D Harding
- MRC Human Genetics Unit, MRC IGMM, Western General Hospital, Edinburgh EH4 2XU, UK
| | - Richard A Baldock
- MRC Human Genetics Unit, MRC IGMM, Western General Hospital, Edinburgh EH4 2XU, UK
| | - Melissa H Little
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Chad M Vezina
- University of Wisconsin-Madison, School of Veterinary Medicine, Madison, WI 53706, USA
| | - Cathy Mendelsohn
- Columbia University, Department of Urology, New York, NY 10032, USA
| |
Collapse
|
17
|
Yamany T, Van Batavia J, Batourina E, Dan H, Schneider K, Matos C, Mendelsohn C. MP21-02 TRACING THE ORIGINS OF BLADDER CANCER USING FATE MAPPING TECHNIQUES. J Urol 2014. [DOI: 10.1016/j.juro.2014.02.830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
18
|
Zhang B, Pasini R, Dan H, Joshi N, Zhao Y, Leustek T, Zheng ZL. Aberrant gene expression in the Arabidopsis SULTR1;2 mutants suggests a possible regulatory role for this sulfate transporter in response to sulfur nutrient status. Plant J 2014; 77:185-97. [PMID: 24308460 DOI: 10.1111/tpj.12376] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 10/17/2013] [Accepted: 11/04/2013] [Indexed: 05/18/2023]
Abstract
Sulfur is required for the biosynthesis of cysteine, methionine and numerous other metabolites, and thus is critical for cellular metabolism and various growth and developmental processes. Plants are able to sense their physiological state with respect to sulfur availability, but the sensor remains to be identified. Here we report the isolation and characterization of two novel allelic mutants of Arabidopsis thaliana, sel1-15 and sel1-16, which show increased expression of a sulfur deficiency-activated gene β-glucosidase 28 (BGLU28). The mutants, which represent two different missense alleles of SULTR1;2, which encodes a high-affinity sulfate transporter, are defective in sulfate transport and as a result have a lower cellular sulfate level. However, when treated with a very high dose of sulfate, sel1-15 and sel1-16 accumulated similar amounts of internal sulfate and its metabolite glutathione (GSH) to wild-type, but showed higher expression of BGLU28 and other sulfur deficiency-activated genes than wild-type. Reduced sensitivity to inhibition of gene expression was also observed in the sel1 mutants when fed with the sulfate metabolites Cys and GSH. In addition, a SULTR1;2 knockout allele also exhibits reduced inhibition in response to sulfate, Cys and GSH, consistent with the phenotype of sel1-15 and sel1-16. Taken together, the genetic evidence suggests that, in addition to its known function as a high-affinity sulfate transporter, SULTR1;2 may have a regulatory role in response to sulfur nutrient status. The possibility that SULTR1;2 may function as a sensor of sulfur status or a component of a sulfur sensory mechanism is discussed.
Collapse
Affiliation(s)
- Bo Zhang
- Department of Biological Sciences, Lehman College, City University of New York, Bronx, NY 10468, USA
| | | | | | | | | | | | | |
Collapse
|
19
|
Gandhi D, Molotkov A, Batourina E, Schneider K, Dan H, Reiley M, Laufer E, Metzger D, Liang F, Liao Y, Sun TT, Aronow B, Rosen R, Mauney J, Adam R, Rosselot C, Van Batavia J, McMahon A, McMahon J, Guo JJ, Mendelsohn C. Retinoid signaling in progenitors controls specification and regeneration of the urothelium. Dev Cell 2013; 26:469-482. [PMID: 23993789 DOI: 10.1016/j.devcel.2013.07.017] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 06/20/2013] [Accepted: 07/24/2013] [Indexed: 12/20/2022]
Abstract
The urothelium is a multilayered epithelium that serves as a barrier between the urinary tract and blood, preventing the exchange of water and toxic substances. It consists of superficial cells specialized for synthesis and transport of uroplakins that assemble into a tough apical plaque, one or more layers of intermediate cells, and keratin 5-expressing basal cells (K5-BCs), which are considered to be progenitors in the urothelium and other specialized epithelia. Fate mapping, however, reveals that intermediate cells rather than K5-BCs are progenitors in the adult regenerating urothelium, that P cells, a transient population, are progenitors in the embryo, and that retinoids are critical in P cells and intermediate cells, respectively, for their specification during development and regeneration. These observations have important implications for tissue engineering and repair and, ultimately, may lead to treatments that prevent loss of the urothelial barrier, a major cause of voiding dysfunction and bladder pain syndrome.
Collapse
Affiliation(s)
- Devangini Gandhi
- Columbia University, Depts. of Urology, Genetics & Development and Pathology 1130 St. Nicholas Avenue, New York NY, USA
| | - Andrei Molotkov
- Columbia University, Depts. of Urology, Genetics & Development and Pathology 1130 St. Nicholas Avenue, New York NY, USA
| | - Ekatherina Batourina
- Columbia University, Depts. of Urology, Genetics & Development and Pathology 1130 St. Nicholas Avenue, New York NY, USA
| | - Kerry Schneider
- Columbia University, Depts. of Urology, Genetics & Development and Pathology 1130 St. Nicholas Avenue, New York NY, USA
| | - Hanbin Dan
- Columbia University, Depts. of Urology, Genetics & Development and Pathology 1130 St. Nicholas Avenue, New York NY, USA
| | - Maia Reiley
- Columbia University, Depts. of Urology, Genetics & Development and Pathology 1130 St. Nicholas Avenue, New York NY, USA
| | - Ed Laufer
- Columbia University, Department of Pathology, 630 West 168th Street, New York, NY, USA
| | - Daniel Metzger
- IGBMC, CNRS UMR7104/ INSERM U964, Université de Strasbourg, Collège de France, B.P. 10142, ILLKIRCH Cedex, FRANCE
| | - Fengxia Liang
- Department of Cell Biology, New York University Medical School, 550 First Avenue, New York, NY, USA
| | - Yi Liao
- Department of Cell Biology, New York University Medical School, 550 First Avenue, New York, NY, USA
| | - Tung-Tien Sun
- Department of Cell Biology, New York University Medical School, 550 First Avenue, New York, NY, USA
| | - Bruce Aronow
- Division of Biomedical Informatics 3333 Burnet Ave., MLC 7024 Cincinnati, OH 45229
| | - Roni Rosen
- Columbia University, Depts. of Urology, Genetics & Development and Pathology 1130 St. Nicholas Avenue, New York NY, USA
| | - Josh Mauney
- Boston Children's Hospital, Urological Diseases Research Center, Enders Research Building, 300, Longwood Avenue, Boston, MA 02115 USA
| | - Rosalyn Adam
- Department of Cell Biology, New York University Medical School, 550 First Avenue, New York, NY, USA
| | - Carolina Rosselot
- Columbia University, Depts. of Urology, Genetics & Development and Pathology 1130 St. Nicholas Avenue, New York NY, USA
| | - Jason Van Batavia
- Columbia University, Depts. of Urology, Genetics & Development and Pathology 1130 St. Nicholas Avenue, New York NY, USA
| | - Andrew McMahon
- Department of Stem Cell Biology and Regenerative Medicine, Eli and Edythe Broad-CIRM Center for Regenerative Medicine and Stem Cell Research, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Jill McMahon
- Department of Stem Cell Biology and Regenerative Medicine, Eli and Edythe Broad-CIRM Center for Regenerative Medicine and Stem Cell Research, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Jin-Jin Guo
- Department of Stem Cell Biology and Regenerative Medicine, Eli and Edythe Broad-CIRM Center for Regenerative Medicine and Stem Cell Research, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Cathy Mendelsohn
- Columbia University, Depts. of Urology, Genetics & Development and Pathology 1130 St. Nicholas Avenue, New York NY, USA
| |
Collapse
|
20
|
Wang L, Jin X, Zhao X, Liu D, Hu T, Li W, Jiang L, Dan H, Zeng X, Chen Q. Focal dermal hypoplasia: updates. Oral Dis 2013; 20:17-24. [PMID: 23463902 DOI: 10.1111/odi.12083] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 01/25/2013] [Accepted: 02/06/2013] [Indexed: 02/05/2023]
Abstract
Focal dermal hypoplasia (FDH), or Goltz-Gorlin syndrome, is a rare syndrome and may result in multisystem disorders. Several reviews of FDH have been published. However, the last comprehensive review of this disorder appeared more than 20 years ago. To date, a number of new clinical manifestations have been reported and considerable knowledge has accumulated regarding etiology and pathogenetic mechanisms. The purpose of this review is to gather these more recent data and to provide organized and reliable information. So we reviewed 159 cases of FDH that had been reported from 1990 to 2012, summarized the new discoveries, and suggested a potential standard for the diagnosis of FDH. We also reported on a Chinese girl with FDH, who was clinically and histologically in accord with FDH, as an example.
Collapse
Affiliation(s)
- L Wang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan UniversityChengdu, Sichuan, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Otsuka T, Dan H, Dan I, Sase M, Sano T, Tsuzuki D, Fujita A, Sasaguri K, Okada N, Kusama M, Jinbu Y, Watanabe E. Effect of local anesthesia on trigeminal somatosensory-evoked magnetic fields. J Dent Res 2012; 91:1196-201. [PMID: 23018817 DOI: 10.1177/0022034512462398] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
For objective neurophysiological evaluation of the function of the trigeminal system, magnetoencephalography- based TSEF (trigeminal somatosensory-evoked field) assessment would be valuable in providing spatial and temporal profiles of cortical responses. However, this necessitates knowledge of how TSEF varies with trigeminal nerve dysfunctions. We introduced a conduction block of the trigeminal nerve using local anesthesia (lidocaine) to temporally mimic nerve dysfunctions, and monitored TSEF changes. Following an electrical stimulation of the lower lip, a magnetic response with peak latency of approximately 20 ms was identified in all participants. Dipole for the peak was estimated on the post-central gyrus in the participant's own magnetic resonance image. After normalization to Montreal Neurological Institute (MNI) space and inter-participant data integration, the summary equivalent current dipole localization among participants remained in the post-central gyrus, suggesting validity of the use of MNI space. Partial anesthesia of the lower lip led to a loss of the waveform characteristics of TSEF for electrical stimulation to the trigeminal nerve. We verified that the 20-ms latency cortical response of TSEF components localized at the primary sensory cortex can serve as a robust neurofunctional marker of experimental trigeminal nerve dysfunction.
Collapse
Affiliation(s)
- T Otsuka
- Department of Craniofacial Growth and Developmental Dentistry, Kanagawa Dental College, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Dan H, Simsa-Maziel S, Hisdai A, Sela-Donenfeld D, Monsonego Ornan E. Expression of matrix metalloproteinases during impairment and recovery of the avian growth plate1. J Anim Sci 2009; 87:3544-55. [DOI: 10.2527/jas.2009-2068] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
23
|
Chajut A, Benjamin S, Gilad S, Goren Y, Dan H, Zion O, Kushnir M, Kundel Y, Niv Y, Brenner B. Circulating microRNAs as potential blood-based biomarkers for detection of colorectal cancer. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e15040] [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: 11/20/2022] Open
Abstract
e15040 Background: Colorectal cancer (CRC) is one of the leading causes of cancer death worldwide. While there is a strong correlation between stage and prognosis in this disease, current screening methods for CRC have significant limitations, and newer technological approaches are desired. Circulating nucleic acids in body fluids have been studied as a source for diagnostic information and for cancer screening, yet the potential of microRNAs, a family of small non-coding regulatory RNAs, has not yet been thoroughly explored. Here we investigated the utility of microRNAs as potential serum biomarkers for early detection of CRC. Methods: We developed protocols for extracting and quantifying microRNA levels in serum. Serum levels of more than 350 microRNAs were measured using qRT-PCR on samples from 10 healthy controls and 10 CRC patients. Most microRNAs showed consistent levels across different individuals. A subset of microRNAs had significant differences in abundance between the two groups and was studied on a larger cohort of 118 patients and controls. Results: We initially identified a subset of microRNAs that showed significant differential abundance between sera of CRC patients and controls. Measuring the serum levels of 22 microRNAs on a cohort of 118 patients and controls, we showed that levels of circulating microRNAs can be very informative in the identification of CRC. Conclusions: The results demonstrate the potential of the microRNA processing and analysis methods that we developed. Certain microRNAs were found in different amounts in sera of CRC patients compared to healthy controls. Thus, circulating microRNAs represent promising candidates for diagnostic biomarkers in CRC. [Table: see text]
Collapse
Affiliation(s)
- A. Chajut
- Rosetta Genomics, Rehovot, Israel; Institute of Oncology, Rabin Medical Center, Petah Tikva, Israel; Institute of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel
| | - S. Benjamin
- Rosetta Genomics, Rehovot, Israel; Institute of Oncology, Rabin Medical Center, Petah Tikva, Israel; Institute of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel
| | - S. Gilad
- Rosetta Genomics, Rehovot, Israel; Institute of Oncology, Rabin Medical Center, Petah Tikva, Israel; Institute of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel
| | - Y. Goren
- Rosetta Genomics, Rehovot, Israel; Institute of Oncology, Rabin Medical Center, Petah Tikva, Israel; Institute of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel
| | - H. Dan
- Rosetta Genomics, Rehovot, Israel; Institute of Oncology, Rabin Medical Center, Petah Tikva, Israel; Institute of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel
| | - O. Zion
- Rosetta Genomics, Rehovot, Israel; Institute of Oncology, Rabin Medical Center, Petah Tikva, Israel; Institute of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel
| | - M. Kushnir
- Rosetta Genomics, Rehovot, Israel; Institute of Oncology, Rabin Medical Center, Petah Tikva, Israel; Institute of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel
| | - Y. Kundel
- Rosetta Genomics, Rehovot, Israel; Institute of Oncology, Rabin Medical Center, Petah Tikva, Israel; Institute of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel
| | - Y. Niv
- Rosetta Genomics, Rehovot, Israel; Institute of Oncology, Rabin Medical Center, Petah Tikva, Israel; Institute of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel
| | - B. Brenner
- Rosetta Genomics, Rehovot, Israel; Institute of Oncology, Rabin Medical Center, Petah Tikva, Israel; Institute of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel
| |
Collapse
|
24
|
Lin M, Armstrong S, Ronholm J, Dan H, Auclair ME, Zhang Z, Cao X. Screening and characterization of monoclonal antibodies to the surface antigens of Listeria monocytogenes serotype 4b. J Appl Microbiol 2009; 106:1705-14. [PMID: 19226395 DOI: 10.1111/j.1365-2672.2008.04140.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS This study aims to develop and characterize monoclonal antibodies (Mabs) with high specificity and affinity for surface antigens of an epidemiologically important serotype 4b of Listeria monocytogenes. METHODS AND RESULTS Hybridoma clones were derived from B lymphocytes of mice immunized with L. monocytogenes serotype 4b and screened against this strain by an enzyme-linked immunosorbent assay. Twenty-nine clones secreting Mabs reactive with formalin-killed bacteria were obtained; 15, 8, 5 and 1 Mabs were immunoglobulin subclasses IgG2a, IgG2b, IgM and IgG1, respectively. Immunofluorescence or immunogold labelling demonstrated all except five IgM and one IgG2a Mabs bound to the surface of a live L. monocytogenes serotype 4b. The majority of the 23 surface-binding Mabs recognized linear epitopes on a 77-kDa protein. These surface-binding Mabs exhibited little or no cross-reactivity with non-4b serotypes (1/2a, 1/2b, 3a, etc.) of L. monocytogenes, five other Listeria species, Escherichia coli O157:H7 and Salmonella enterica serovar Typhimurium. CONCLUSIONS The Mabs recognizing a 77-kDa surface protein are novel antibodies with specificity and affinity for L. monocytogenes serotype 4b. SIGNIFICANCE AND IMPACT OF THE STUDY These anti-77 kDa surface protein Mabs may be explored as reagents for the development of Mabs-based diagnostic immunoassays for L. monocytogenes serotype 4b strains.
Collapse
Affiliation(s)
- M Lin
- Canadian Food Inspection Agency, Ottawa Laboratory Fallowfield, 3851 Fallowfield Road, Ottawa, Ontario, Canada.
| | | | | | | | | | | | | |
Collapse
|
25
|
Abstract
Tibial dyschondroplasia (TD) is a prevalent skeletal abnormality associated with rapid growth rate in many avian species; it causes enormous economic losses and is an animal welfare problem. Tibial dyschondroplasia is characterized by the presence of a nonvascularized, nonmineralized lesion that extends from the epiphyseal growth plate into the metaphysis of the proximal tibiotarsal bones. The mechanisms underlying TD development are not known, although they have been extensively studied in broilers using different induction models. However, an effective model for TD induction in turkeys has never been described. The objective of this study was to establish such a model by using tetramethylthiuram disulfide (thiram), an agent that is frequently used in broilers to induce TD. We found that dramatically longer exposures to much higher concentrations of thiram were required to induce TD in turkeys vs. broilers. In contrast to broilers, in which 50 mg/kg of thiram induces a high incidence of severe TD within 10 d, in turkeys, an exposure to 400 mg/kg of thiram for 11 wk was necessary for the development of severe TD lesions. These results show different mechanisms for TD induction in these 2 closely related species, suggesting differences in TD etiology between them.
Collapse
Affiliation(s)
- S Simsa
- Faculty of Agricultural, Food and Environmental Quality Sciences, Department of Biochemistry and Nutrition, The Hebrew University, Rehovot 76100, Israel
| | | | | | | |
Collapse
|
26
|
Dan H, Yang G, Zheng ZL. A negative regulatory role for auxin in sulphate deficiency response in Arabidopsis thaliana. Plant Mol Biol 2007; 63:221-35. [PMID: 17063378 PMCID: PMC1945211 DOI: 10.1007/s11103-006-9084-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2006] [Accepted: 08/30/2006] [Indexed: 05/12/2023]
Abstract
Sulphate is a major macronutrient required for the synthesis of the sulphur (S)-containing amino acid cysteine and thus is critical for cellular metabolism, growth and development and response to various abiotic and biotic stresses. A recent genome-wide expression study suggested that several auxin-inducible genes were up-regulated by S deficiency in Arabidopsis. Here, we examined the relationship between auxin signaling and S deficiency. Investigation of DR5::GUS expression patterns indicates that auxin accumulation and/or response is suppressed by S deficiency. Consistently, S deficiency resulted in the suppression of lateral root development, but the axr1-3 mutant was insensitive to this response. Furthermore, the activation of the promoter for the putative thioglucosidase gene (At2g44460) by S deficiency was suppressed by auxin, cytokinin and abscisic acid (ABA). Interestingly, the activation of At2g44460 by S deficiency is regulated by the availability of carbon and nitrogen nutrients in a tissue-specific manner. These results demonstrate that auxin plays a negative role in signaling to S deficiency. Given that activation of the genes encoding the sulphate transporter SULTR1;2 and 5'-adenylylsulphate reductase APR2 are suppressed by cytokinin only, we hypothesize that while cytokinin may play an important role in general S deficiency response, auxin might be only involved in a subset of S deficiency responses such as the release of thiol groups from the S storage sources.
Collapse
Affiliation(s)
- Hanbin Dan
- Department of Biological Sciences, Lehman College, City, University of New York, Bronx, NY 10468, USA, Plant Sciences PhD Subprogram, Graduate School and University Center, City University of New York, New York, NY 10016, USA
| | - Guohua Yang
- Department of Biological Sciences, Lehman College, City, University of New York, Bronx, NY 10468, USA
| | - Zhi-Liang Zheng
- Department of Biological Sciences, Lehman College, City, University of New York, Bronx, NY 10468, USA, Plant Sciences PhD Subprogram, Graduate School and University Center, City University of New York, New York, NY 10016, USA e-mail:
| |
Collapse
|
27
|
Abstract
The isolation, physical, and genetic mapping of a group of wheat genes expressed in infected heads of Triticum aestivum 'Frontana' resistant to Fusarium head blight is reported. A cDNA library was built from heads of 'Frontana' through suppressive subtractive hybridization, to enrich for sequences induced by the pathogen Fusarium graminearum during infection. A group of 1794 clones was screened by dot blot hybridization for differential gene expression following infection. Twenty of these clones showed a strong difference in intensity of hybridization between infected and mock-inoculated wheat head samples, suggesting that they corresponded to genes induced during infection. The 20 clones were sequenced and used for mapping analysis. We determined a precise chromosomal location for 14 selected clones by using series of chromosome deletion stocks. It was shown that the 14 clones detected 90 fragments with the use of the restriction enzyme EcoRI; 52 bands were assigned to chromosome bins, whereas 38 fragments could not be assigned. The selected clones were also screened for polymorphisms on a 'Wuhan' x 'Maringa' wheat doubled haploid mapping population. One clone, Ta01_02b03, was related to a quantitative trait locus for type II resistance located on chromosome 2AL, as determined with simple sequence repeat markers on another mapping population, but did not map in the same location on our population. Another clone, Ta01_06f04, was identified by BLAST (basic local alignment search tool) search in public databases to code for a novel beta-1,3-glucanase, homologous to a major pathogenesis-related protein. This clone mapped to chromosomal regions on chromosome 3, including 3BL and 3DL, where B glucanase gene clusters are known to exist. Seven other clones, including 1 coding for an ethylene-response element binding protein and 3 for ribosomal proteins, and 4 clones corresponding to proteins with unknown function, were also mapped.
Collapse
Affiliation(s)
- F P Han
- Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | | | | | | | | |
Collapse
|
28
|
Dan H, Ali-Khan ST, Robb J. Use of Quantitative PCR Diagnostics to Identify Tolerance and Resistance to Verticillium dahliae in Potato. Plant Dis 2001; 85:700-705. [PMID: 30823192 DOI: 10.1094/pdis.2001.85.7.700] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A potato breeding population was evaluated for the presence of tolerance and resistance to Verticillium dahliae. Clones were ranked as susceptible or moderately and highly resistant based on symptom expression, and a species-specific polymerase chain reaction (PCR)-based assay was used to determine the Verticillium biomass in the bases of stems. A clone was designated as tolerant if the amount of fungus present in the host tissue was equal to or greater than the collective average amount for all clones in the symptom category above. Tolerant and resistant clones were identified in all trials, but the expression of tolerance was usually unstable across runs. The fungus was detected in some symptomless plants; on the other hand, some symptomatic plants were found to be pathogen-free. These observations emphasize the necessity of accurate quantification of the pathogen biomass in potato during Verticillium resistance breeding programs.
Collapse
Affiliation(s)
- H Dan
- Department of Molecular Biology and Genetics
| | - S T Ali-Khan
- Department of Horticultural Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - J Robb
- Department of Molecular Biology and Genetics, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| |
Collapse
|
29
|
Takai S, Hines SA, Sekizaki T, Nicholson VM, Alperin DA, Osaki M, Takamatsu D, Nakamura M, Suzuki K, Ogino N, Kakuda T, Dan H, Prescott JF. DNA sequence and comparison of virulence plasmids from Rhodococcus equi ATCC 33701 and 103. Infect Immun 2000; 68:6840-7. [PMID: 11083803 PMCID: PMC97788 DOI: 10.1128/iai.68.12.6840-6847.2000] [Citation(s) in RCA: 146] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The virulence plasmids of the equine virulent strains Rhodococcus equi ATCC 33701 and 103 were sequenced, and their genetic structure was analyzed. p33701 was 80,610 bp in length, and p103 was 1 bp shorter; their sequences were virtually identical. The plasmids contained 64 open reading frames (ORFs), 22 of which were homologous with genes of known function and 3 of which were homologous with putative genes of unknown function in other species. Putative functions were assigned to five ORFs based on protein family characteristics. The most striking feature of the virulence plasmids was the presence of a 27,536-bp pathogenicity island containing seven virulence-associated protein (vap) genes, including vapA. These vap genes have extensive homology to vapA, which encodes a thermoregulated and surface-expressed protein. The pathogenicity island contained a LysR family transcriptional regulator and a two-component response regulator upstream of six of the vap genes. The vap genes were present as a cluster of three (vapA, vapC, and vapD), as a pair (vapE and vapF), or individually (vapG; vapH). A region of extensive direct repeats of unknown function, possibly associated with thermoregulation, was present immediately upstream of the clustered and the paired genes but not the individual vap genes. There was extensive homology among the C-terminal halves of all vap genes but not generally among the N-terminal halves. The remainder of the plasmid consisted of a large region which appears to be associated with conjugation functions and a large region which appears to be associated with replication and partitioning functions.
Collapse
Affiliation(s)
- S Takai
- Department of Animal Hygiene, School of Veterinary Medicine and Animal Science, Kitasato University, Towada, Aomori 034-8628, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Ni D, Dan H, Mo J. [Audiologic analysis of a family with nonsyndromic genetic progressive sensorineural hearing loss]. Zhonghua Er Bi Yan Hou Ke Za Zhi 1999; 34:77-80. [PMID: 12764852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
OBJECTIVE To analyze the audiological data collected from a large six-generation family with nonsyndromic genetic progressive sensorineural hearing loss. METHODS There were 104 members in the family who could provide the hearing data, in which 46 individuals had hearing impairment. The pure tone threshold in 56 individuals and ABR in 49 individuals were analyzed. The pedigree of 104 family members with 6 branches was made. RESULTS Hearing impairment was found in the second decade. The hearing thresholds of high and mid frequencies were deteriorated up to 110 dB HL in the fourth decade. The hearing loss started from high frequencies and quickly expended to mid and low frequencies. The regression analysis of pure tone thresholds of 4 kHz and 8 kHz in 6 cases with ages from 10 to 20 years were carried out. The regression coefficients, or the annual threshold increases were 15.96 dB and 15.34 dB per year, respectively. ABR results showed that the hearing loss was caused by cochlear impairment. The pedigree of family indicated high or complete penetrance. CONCLUSION The medical history and audiological analysis of the family members showed that this hearing impairment was nonsyndromic autosomal dominant progressive sensorineural hearing loss. The hearing impairment and onset age in this family were different from those families with 13 loci related autosomal dominant nonsyndromic sensorineural hearing loss reported previously. The genetic linkage study showed that it could not link to these regions and other two regions reported recently in Internet.
Collapse
Affiliation(s)
- D Ni
- Department of Otorhinolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730
| | | | | |
Collapse
|
31
|
Lu K, Dan H, Xu H, Wen L, Wang Y, Huang G. [Histological and electron microscopic study of rotator cuff tear]. Zhonghua Wai Ke Za Zhi 1998; 36:556-8. [PMID: 11825465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To understand the changes of rotator cuff during tear and observe the pathologic and ultramicroscopic structure of rotator cuff. METHOD Histological and ultra thin slides of samples of 36 cases of rotator cuff were made. RESULT The degeneration of rotator cuff happened in synovium side, and then extended to the middle and deep sides of tendon. The deep side of cuff tendon could degenerate without synovium. The repair of tendon could be achieved with two types of healing. CONCLUSION It would be difficult to achieve full repair when complete tear and deep side tear occurred to the rotator cuff.
Collapse
Affiliation(s)
- K Lu
- Department of Orthopaedic, Beijing Hospital, Beijing 100730
| | | | | | | | | | | |
Collapse
|
32
|
Dan H, Ni D, Li F. [Distortion product otoacoustic emissions in normally hearing young humans]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1998; 20:207-11. [PMID: 11367707] [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: 04/16/2023]
Abstract
OBJECTIVE To investigate the basic properties of distortion product otoacoustic emissions (DPOAE) in normally hearing subjects of China. METHODS DPOAE "audiogram" (DP-gram) and input/output functions (I/O functions) were recorded from 24 normally hearing young humans with Celesta-503 cochlear emissions analyzer. RESULTS The prevalence of DPOAE was 100% ranging in frequency from 500 to 8,000 Hz, with respect to the geometric means of f1 and f2 stimuli. The mean DP-gram had two peaks at about 1,000 Hz and 6,000 Hz and a dip at about 3,000 Hz. The higher amplitude of DPOAE was recorded at about 3,000 Hz when using unequal primary-tone levels (L1 > L2). The mean thresholds of DPOAE were between 25 and 40 dB SPL. The thresholds of DPOAE decreased with increasing primary-tone frequencies. The I/O slopes were higher at about peak freqencies than at other frequencies. For all the results of DPOAE in left and right ears, there were no apparent differences by statistics. CONCLUSIONS By systematical studies of the properties of DPOAE in normally hearing ears of Chinese subjects, this paper provides basic reference data for clinical application of DPOAE.
Collapse
Affiliation(s)
- H Dan
- PUMC Hospital, CAMS and PUMC, Beijing 100730
| | | | | |
Collapse
|
33
|
Fukuda K, Dan H, Takayama M, Kumano F, Saitoh M, Tanaka S. Hyaluronic acid increases proteoglycan synthesis in bovine articular cartilage in the presence of interleukin-1. J Pharmacol Exp Ther 1996; 277:1672-5. [PMID: 8667237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Osteoarthritis is a common joint disorder in humans. Although intra-articular injection of hyaluronic acid (HA) is in widespread clinical use, there are limited data on the effect of HA on degenerated cartilage. When bovine articular cartilage is degraded with interleukin-1, HA penetrates the cartilage and accumulates in the pericellular matrix of chondrocytes. HA also enhances proteoglycan synthesis that has been reduced by interleukin-1. Thus HA seems to have anabolic effects on degraded cartilage.
Collapse
Affiliation(s)
- K Fukuda
- Department of Orthopaedic Surgery, Kinki University School of Medicine, Osaka, Japan
| | | | | | | | | | | |
Collapse
|
34
|
Fukuda K, Ohtani K, Dan H, Tanaka S. Interleukin-1 inhibits keratan sulfate production by rabbit chondrocytes: possible role of prostaglandin E2. Inflamm Res 1995; 44:178-81. [PMID: 7670935 DOI: 10.1007/bf01782816] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
We investigated the importance of prostaglandin E2 (PGE2) release in interleukin-1 (IL-1)-induced inhibition of aggrecan synthesis by chondrocytes. Keratan sulfate (KS) production was measured in parallel with PGE2 release in chondrocytes. IL-1 inhibited KS production and stimulated PGE2 release. In the presence of PGE2, there was a dose-dependent decrease in baseline KS production. Indomethacin and dexamethasone partially blocked the IL-1-induced PGE2 release while KS production recovered. Our results suggest that IL-1 inhibits KS production, in part, by stimulating the release of PGE2.
Collapse
Affiliation(s)
- K Fukuda
- Department of Orthopaedic Surgery, Kinki University School of Medicine, Osaka, Japan
| | | | | | | |
Collapse
|
35
|
Fukuda K, Dan H, Saitoh M, Takayama M, Tanaka S. Superoxide dismutase inhibits interleukin-1-induced degradation of human cartilage. Agents Actions 1994; 42:71-3. [PMID: 7847190 DOI: 10.1007/bf02014303] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Interleukin-1 (IL-1) is a key mediator in the pathogenesis of cartilage destruction in arthritis-related disorders. Human recombinant superoxide dismutase (SOD) blocked IL-1-mediated cartilage destruction but had no effect on IL-1-mediated changes in glycosaminoglycan and prostaglandin E2 synthesis. These data suggest that superoxide anions may be one factor of IL-1-mediated cartilage destruction.
Collapse
Affiliation(s)
- K Fukuda
- Department of Orthopaedic Surgery, Kinki University School of Medicine, Osaka, Japan
| | | | | | | | | |
Collapse
|
36
|
Rigoli A, Allaria B, Brunetti B, DeFilippi G, Reina V, Sansone E, Brock H, Necsk S, Rapf B, Kern F, Weiss E, Chromy H, Dan H, Bonato R, Merlo F, Pittarello D, Lacquaniti L, Andriolo L, Mentec H, Terré S, Legrand P, Nieto AF, Fernández JMC, García MP, Raurell JG, de Mier MG, Vinuesa FJO, Fayos L, Lopez JA, Belenguer JE, Oltra R, Cabadés A, Ruano M, Palacios V, Palencia JM. Cardiovascular assessment II. Intensive Care Med 1992. [DOI: 10.1007/bf03216332] [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: 10/18/2022]
|
37
|
Nakano A, Tanaka S, Hirofuji E, Yasuwaki Y, Yamamoto T, Kubota S, Dan H, Yanase Y. Transverse divergent dislocation of the elbow in a six-year-old boy: case report. J Trauma 1992; 32:118-9. [PMID: 1732564 DOI: 10.1097/00005373-199201000-00026] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Simultaneous dislocation of the elbow and the proximal radioulnar joint is a rare occurrence. Closed reduction led to a cure in a 6-year-old boy with transverse divergent dislocation of the elbow.
Collapse
Affiliation(s)
- A Nakano
- Department of Orthopaedic Surgery, Kinki University School of Medicine, Osaka, Japan
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Saigo F, Morita Y, Kakiuchi S, Dan H, Yamasaki N. [Pre and postoperative programs for a patient undergoing total hip joint replacement and designing of an abduction pillow for the affected leg]. Kango Gijutsu 1986; 32:1286-90. [PMID: 3637333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|