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Yuan P, Xie Y, Xu R, Li Y, Yao K, Liu J, Yan B, Jiang S, Lu Q, Chen Q, Zang H, Xiong W, Tang Y, Hu S, Wang L. Efficacy of indocyanine green fluorescence-guided inguinal lymph node dissection for penile cancer: a randomised trial. BJU Int 2024; 133:442-450. [PMID: 37983593 DOI: 10.1111/bju.16231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
OBJECTIVES To investigate the safety and efficacy of indocyanine green (ICG) fluorescence-guided inguinal lymph node dissection (ILND) in patients with penile cancer. PATIENTS AND METHODS A prospective, single-blind, randomised controlled clinical trial (ChiCTR2100044584) was performed among patients with penile caner who underwent bilateral modified ILND at four centres in China between 1 April 2021 and 30 June 2022. Patients aged 18-80 years and diagnosed with squamous cell carcinomas were included. Each enrolled patient was randomly assigned to either ICG fluorescence-guided ILND by a laparoscopic or robot-assisted approach in one groin, with non-ICG fluorescence-guided ILND in the other groin acting as a control. The primary outcome was the number of retrieved ILNs. Secondary outcomes included complications according to the Clavien-Dindo classification and the ILN non-compliance (inadequate removal of ILNs) rate. RESULTS A total of 45 patients were included in the intention-to-treat (ITT) analysis, and the 42 who completed the entire study were included in the per protocol (PP) analysis. There were no ICG-related complications in any of the patients. The results of the ITT and PP analyses indicated that the total number of unilateral ILNs retrieved was higher on the ICG side than on the non-ICG side (mean 13 vs 9 ILNs, difference 4 ILNs [95% CI 2.7-4.4], P = 0.007), and the number of unilateral deep and superficial ILNs was higher on the ICG side. Furthermore, the LN non-compliance rate was lower on the ICG side than on the non-ICG side. Additionally, there was no significant difference in local complications in the groins between the two sides (P > 0.05). CONCLUSION An ICG fluorescence-guided ILND was safe for patients with penile cancer. This procedure can improve the number of ILNs retrieved and reduce the LN non-compliance rate without increased complications. ICG fluorescence-guided ILND is beneficial and recommended for selected patients with penile cancer.
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Affiliation(s)
- Peng Yuan
- Department of Urology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yu Xie
- Department of Urology, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Ran Xu
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yuanwei Li
- Department of Urology, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China
| | - Kun Yao
- Department of Urology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Jianye Liu
- Department of Urology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Bin Yan
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Shusuan Jiang
- Department of Urology, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Qiang Lu
- Department of Urology, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China
| | - Qian Chen
- Department of Pathology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Hongjing Zang
- Department of Pathology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Wei Xiong
- Department of Urology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yongxiang Tang
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Shuo Hu
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Long Wang
- Department of Urology, The Third Xiangya Hospital, Central South University, Changsha, China
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Zhang B, Zhang H, Wang Z, Cao H, Zhang N, Dai Z, Liang X, Peng Y, Wen J, Zhang X, Zhang L, Luo P, Zhang J, Liu Z, Cheng Q, Peng R. The regulatory role and clinical application prospects of circRNA in the occurrence and development of CNS tumors. CNS Neurosci Ther 2024; 30:e14500. [PMID: 37953502 PMCID: PMC11017455 DOI: 10.1111/cns.14500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/20/2023] [Accepted: 10/03/2023] [Indexed: 11/14/2023] Open
Abstract
BACKGROUND Central nervous system (CNS) tumors originate from the spinal cord or brain. The study showed that even with aggressive treatment, malignant CNS tumors have high mortality rates. However, CNS tumor risk factors and molecular mechanisms have not been verified. Due to the reasons mentioned above, diagnosis and treatment of CNS tumors in clinical practice are currently fraught with difficulties. Circular RNAs (circRNAs), single-stranded ncRNAs with covalently closed continuous structures, are essential to CNS tumor development. Growing evidence has proved the numeral critical biological functions of circRNAs for disease progression: sponging to miRNAs, regulating gene transcription and splicing, interacting with proteins, encoding proteins/peptides, and expressing in exosomes. AIMS This review aims to summarize current progress regarding the molecular mechanism of circRNA in CNS tumors and to explore the possibilities of clinical application based on circRNA in CNS tumors. METHODS We have summarized studies of circRNA in CNS tumors in Pubmed. RESULTS This review summarized their connection with CNS tumors and their functions, biogenesis, and biological properties. Furthermore, we introduced current advances in clinical RNA-related technologies. Then we discussed the diagnostic and therapeutic potential (especially for immunotherapy, chemotherapy, and radiotherapy) of circRNA in CNS tumors in the context of the recent advanced research and application of RNA in clinics. CONCLUSIONS CircRNA are increasingly proven to participate in decveloping CNS tumors. An in-depth study of the causal mechanisms of circRNAs in CNS tomor progression will ultimately advance their implementation in the clinic and developing new strategies for preventing and treating CNS tumors.
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Affiliation(s)
- Bo Zhang
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina
- National Clinical Research Center for Geriatric Disorders, Xiangya HospitalCentral South UniversityChangshaChina
| | - Hao Zhang
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina
- Department of Neurosurgery, The Second Affiliated HospitalChongqing Medical UniversityChongqingChina
| | - Zeyu Wang
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina
- MRC Centre for Regenerative Medicine, Institute for Regeneration and RepairUniversity of EdinburghEdinburghUK
| | - Hui Cao
- Department of Psychiatry, The School of Clinical MedicineHunan University of Chinese MedicineChangshaChina
| | - Nan Zhang
- College of Life Science and TechnologyHuazhong University of Science and TechnologyWuhanChina
| | - Ziyu Dai
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina
- National Clinical Research Center for Geriatric Disorders, Xiangya HospitalCentral South UniversityChangshaChina
| | - Xisong Liang
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina
- National Clinical Research Center for Geriatric Disorders, Xiangya HospitalCentral South UniversityChangshaChina
| | - Yun Peng
- Teaching and Research Section of Clinical NursingXiangya Hospital of Central South UniversityChangshaChina
- Department of Geriatrics, Xiangya HospitalCentral South UniversityChangshaChina
| | - Jie Wen
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina
- National Clinical Research Center for Geriatric Disorders, Xiangya HospitalCentral South UniversityChangshaChina
| | - Xun Zhang
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina
- National Clinical Research Center for Geriatric Disorders, Xiangya HospitalCentral South UniversityChangshaChina
| | - Liyang Zhang
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina
- National Clinical Research Center for Geriatric Disorders, Xiangya HospitalCentral South UniversityChangshaChina
| | - Peng Luo
- Department of Oncology, Zhujiang HospitalSouthern Medical UniversityGuangzhouChina
| | - Jian Zhang
- Department of Oncology, Zhujiang HospitalSouthern Medical UniversityGuangzhouChina
| | - Zaoqu Liu
- Department of Interventional RadiologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Quan Cheng
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina
- National Clinical Research Center for Geriatric Disorders, Xiangya HospitalCentral South UniversityChangshaChina
| | - Renjun Peng
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina
- National Clinical Research Center for Geriatric Disorders, Xiangya HospitalCentral South UniversityChangshaChina
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Shan X, Yan H, Li H, Liu F, Li P, Zhao J, Guo W. Abnormal regional activity in the prefrontal-limbic circuit at rest: Potential imaging markers and treatment predictors in drug-naive anxiety disorders. CNS Neurosci Ther 2024; 30:e14523. [PMID: 37990350 PMCID: PMC11017453 DOI: 10.1111/cns.14523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 10/07/2023] [Accepted: 10/29/2023] [Indexed: 11/23/2023] Open
Abstract
BACKGROUND Previous research has identified functional impairments within the prefrontal-limbic circuit in individuals with anxiety disorders. However, the link between these deficiencies, clinical symptoms, and responses to antipsychotic treatment is still not fully understood. This study aimed to investigate abnormal regional activity within the prefrontal-limbic circuit among drug-naive individuals diagnosed with generalized anxiety disorder (GAD) and panic disorder (PD) and to analyze changes following treatment. METHODS Resting-state magnetic resonance imaging was performed on a cohort of 118 anxiety disorder patients (64 GAD, 54 PD) and 61 healthy controls (HCs) at baseline. Among them, 52 patients with GAD and 44 patients with PD underwent a 4-week treatment regimen of paroxetine. Fractional amplitude of low-frequency fluctuation (fALFF) measurements and pattern classification techniques were employed to analyze the data in accordance with the human Brainnetome atlas. RESULTS Both patients with GAD and PD demonstrated decreased fALFF in the right cHipp subregion of the hippocampus and increased fALFF in specified subregions of the cingulate and orbitofrontal lobe. Notably, patients with PD exhibited significantly higher fALFF in the left A24cd subregion compared to patients with GAD, while other ROI subregions showed no significant variations between the two patient groups. Whole-brain analysis revealed abnormal fALFF in both patient groups, primarily in specific areas of the cingulate and parasingulate gyrus, as well as the inferior and medial orbitofrontal gyrus (OFG). Following a 4-week treatment period, specific subregions in the GAD and PD groups showed a significant decrease in fALFF. Further analysis using support vector regression indicated that fALFF measurements in the right A13 and right A24cd subregions may be predictive of treatment response among anxiety disorder patients. CONCLUSIONS Aberrant functional activity in certain subregions of the prefrontal-limbic circuit appears to be linked to the manifestation of anxiety disorders. These findings suggest potential imaging indicators for individual responses to antipsychotic treatment.
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Affiliation(s)
- Xiaoxiao Shan
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental DisordersThe Second Xiangya Hospital of Central South UniversityChangshaHunanChina
- Department of Psychiatry, Shandong Mental Health CenterShandong UniversityJinanShandongChina
| | - Haohao Yan
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental DisordersThe Second Xiangya Hospital of Central South UniversityChangshaHunanChina
| | - Huabing Li
- Department of RadiologyThe Second Xiangya Hospital of Central South UniversityChangshaHunanChina
| | - Feng Liu
- Department of RadiologyTianjin Medical University General HospitalTianjinChina
| | - Ping Li
- Department of PsychiatryQiqihar Medical UniversityQiqiharHeilongjiangChina
| | - Jingping Zhao
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental DisordersThe Second Xiangya Hospital of Central South UniversityChangshaHunanChina
| | - Wenbin Guo
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental DisordersThe Second Xiangya Hospital of Central South UniversityChangshaHunanChina
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Yu D, Zhou T, Xu N, Sun X, Song S, Liu H, Sun Z, Lv Q, Chen J, Tan Y, Sheng X, Li L, Yuan D. Novel CRISPR/Cas9 system assisted by fluorescence marker and pollen killer for high-efficiency isolation of transgene-free edited plants in rice. Plant Biotechnol J 2024. [PMID: 38299436 DOI: 10.1111/pbi.14293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/25/2023] [Accepted: 01/09/2024] [Indexed: 02/02/2024]
Affiliation(s)
- Dong Yu
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Tianshun Zhou
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
- Longping Branch, College of Biology, Hunan University, Changsha, China
| | - Na Xu
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Xuewu Sun
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Shufeng Song
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Hai Liu
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Zhizhong Sun
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Qiming Lv
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Jin Chen
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Yanning Tan
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Xiabing Sheng
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Li Li
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
- Longping Branch, College of Biology, Hunan University, Changsha, China
| | - Dingyang Yuan
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha, China
- Longping Branch, College of Biology, Hunan University, Changsha, China
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Wen J, Song J, Chen J, Feng Z, Jing Q, Gong W, Kang X, Mei L, He C, Ma L, Feng Y. Modeling of pigmentation disorders associated with MITF mutation in Waardenburg syndrome revealed an impaired melanogenesis pathway in iPS-derived melanocytes. Pigment Cell Melanoma Res 2024; 37:21-35. [PMID: 37559350 DOI: 10.1111/pcmr.13118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 06/18/2023] [Accepted: 07/26/2023] [Indexed: 08/11/2023]
Abstract
Waardenburg Syndrome (WS) is a rare genetic disorder that leads to congenital hearing loss and pigmentation defects. Microphthalmia-associated transcription factor (MITF) is one of its significant pathogenic genes. Despite the comprehensive investigation in animal models, the pathogenic mechanism is still poorly described in humans due to difficulties accessing embryonic tissues. In this work, we used induced pluripotent stem cells derived from a WS patient carrying a heterozygous mutation in the MITF gene c.626A>T (p.His209Leu), and differentiated toward melanocyte lineage, which is the most affected cell type involved in WS. Compared with the wild-type cell line, the MITFmut cell line showed a reduced expression of the characteristic melanocyte-related genes and a lesser proportion of mature, fully pigmented melanosomes. The transcriptome analysis also revealed widespread gene expression changes at the melanocyte stage in the MITFmut cell line. The differentially expressed genes were enriched in melanogenesis and cell proliferation-related pathways. Interestingly, ion transport-related genes also showed a significant difference in MITFmut -induced melanocytes, indicating that the MITF mutant may lead to the dysfunction of potassium channels and transporters produced by intermediate cells in the cochlea, further causing the associated phenotype of deafness. Altogether, our study provides valuable insights into how MITF mutation affects WS patients, which might result in defective melanocyte development and the related phenotype based on the patient-derived iPSC model.
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Affiliation(s)
- Jie Wen
- Department of Otorhinolaryngology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
- Institute of Otorhinolaryngology, Head and Neck Surgery, University of South China, Changsha, China
| | - Jian Song
- Department of Otorhinolaryngology, Xiangya Hospital Central South University, Changsha, China
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, China
| | - Jiale Chen
- Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, China
| | - Zhili Feng
- Department of Otorhinolaryngology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
- Institute of Otorhinolaryngology, Head and Neck Surgery, University of South China, Changsha, China
| | - Qiancheng Jing
- Department of Otorhinolaryngology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
- Institute of Otorhinolaryngology, Head and Neck Surgery, University of South China, Changsha, China
| | - Wei Gong
- Department of Otorhinolaryngology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
- Institute of Otorhinolaryngology, Head and Neck Surgery, University of South China, Changsha, China
| | - Xiaoming Kang
- Department of Otorhinolaryngology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
- Institute of Otorhinolaryngology, Head and Neck Surgery, University of South China, Changsha, China
| | - Lingyun Mei
- Department of Otorhinolaryngology, Xiangya Hospital Central South University, Changsha, China
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, China
| | - Chufeng He
- Department of Otorhinolaryngology, Xiangya Hospital Central South University, Changsha, China
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, China
| | - Lu Ma
- Institute of Otorhinolaryngology, Head and Neck Surgery, University of South China, Changsha, China
- The Hengyang Key Laboratory of Cellular Stress Biology, Institute of Cytology and Genetics, Hengyang Medical School, University of South China, Hengyang, China
| | - Yong Feng
- Department of Otorhinolaryngology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
- Institute of Otorhinolaryngology, Head and Neck Surgery, University of South China, Changsha, China
- Province Key Laboratory of Otolaryngology Critical Diseases, Changsha, China
- Hengyang Medical School, University of South China, Hengyang, China
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Yan H, Zhang Y, Shan X, Li H, Liu F, Xie G, Li P, Guo W. Altered interhemispheric functional connectivity in patients with obsessive-compulsive disorder and its potential in therapeutic response prediction. J Neurosci Res 2024; 102. [PMID: 38284840 DOI: 10.1002/jnr.25272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 01/30/2024]
Abstract
The trajectory of voxel-mirrored homotopic connectivity (VMHC) after medical treatment in obsessive-compulsive disorder (OCD) and its value in prediction of treatment response remains unclear. This study aimed to investigate the pathophysiological mechanism of OCD, as well as biomarkers for prediction of pharmacological efficacy. Medication-free patients with OCD and healthy controls (HCs) underwent magnetic resonance imaging. The patients were scanned again after a 4-week treatment with paroxetine. The acquired data were subjected to VMHC, support vector regression (SVR), and correlation analyses. Compared with HCs (36 subjects), patients with OCD (34 subjects after excluding two subjects with excessive head movement) exhibited significantly lower VMHC in the bilateral superior parietal lobule (SPL), postcentral gyrus, and calcarine cortex, and VMHC in the postcentral gyrus was positively correlated with cognitive function. After treatment, the patients showed increased VMHC in the bilateral posterior cingulate cortex/precuneus (PCC/PCu) with the improvement of symptoms. SVR results showed that VMHC in the postcentral gyrus at baseline could aid to predict a change in the scores of OCD scales. This study revealed that SPL, postcentral gyrus, and calcarine cortex participate in the pathophysiological mechanism of OCD while PCC/PCu participate in the pharmacological mechanism. VMHC in the postcentral gyrus is a potential predictive biomarker of the treatment effects in OCD.
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Affiliation(s)
- Haohao Yan
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Yingying Zhang
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Xiaoxiao Shan
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Huabing Li
- Department of Radiology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Feng Liu
- Department of Radiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Guojun Xie
- Department of Psychiatry, The Third People's Hospital of Foshan, Foshan, China
| | - Ping Li
- Department of Psychiatry, Qiqihar Medical University, Qiqihar, China
| | - Wenbin Guo
- Department of Psychiatry, National Clinical Research Center for Mental Disorders, and National Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, China
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He H, Zhang H, Chen H, He F, Yin F, Stauber T, Zou X, Peng J. Functional analysis of two SLC9A6 frameshift variants in lymphoblastoid cells from patients with Christianson syndrome. CNS Neurosci Ther 2023; 29:4059-4069. [PMID: 37381736 PMCID: PMC10651982 DOI: 10.1111/cns.14329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 05/30/2023] [Accepted: 06/17/2023] [Indexed: 06/30/2023] Open
Abstract
BACKGROUND Christianson syndrome (CS) is caused by mutations in SLC9A6 and is characterized by global developmental delay, epilepsy, hyperkinesis, ataxia, microcephaly, and behavioral disorder. However, the molecular mechanism by which these SLC9A6 mutations cause CS in humans is not entirely understood, and there is no objective method to determine the pathogenicity of single SLC9A6 variants. METHODS Trio-based whole exome sequencing (WES) was carried out on two individuals with suspicion of CS. qRT-PCR, western blot analysis, filipin staining, lysosomal enzymatic assays, and electron microscopy examination, using EBV-LCLs established from the two patients, were performed. RESULTS Trio-based WES identified a hemizygous SLC9A6 c.1560dupT, p.T521Yfs*23 variant in proband 1 and a hemizygous SLC9A6 c.608delA, p.H203Lfs*10 variant in proband 2. Both children exhibited typical phenotypes associated with CS. Expression analysis in EBV-LCLs derived from the two patients showed a significant decrease in mRNA levels and no detectable normal NHE6 protein. EBV-LCLs showed a statistically significant increase in unesterified cholesterol in patient 1, but only non-significant increase in patient 2 when stained with filipin. Activities of lysosomal enzymes (β-hexosaminidase A, β-hexosaminidase A + B, β-galactosidase, galactocerebrosidase, arylsulfatase A) of EBV-LCLs did not significantly differ between the two patients and six controls. Importantly, by electron microscopy we detected an accumulation of lamellated membrane structures, deformed mitochondria, and lipid droplets in the patients' EBV-LCLs. CONCLUSIONS The SLC9A6 p.T521Yfs*23 and p.H203Lfs*10 variants in our patients result in loss of NHE6. Alterations of mitochondria and lipid metabolism may play a role in the pathogenesis of CS. Moreover, the combination of filipin staining with electron microscopy examination of patient lymphoblastoid cells can serve as a useful complementary diagnostic method for CS.
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Affiliation(s)
- Hailan He
- Department of Pediatrics, Xiangya HospitalCentral South UniversityChangshaChina
- Hunan Intellectual and Developmental Disabilities Research CenterChangshaChina
| | - Huiwen Zhang
- Department of Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital, Shanghai Institute for Pediatric ResearchShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Hui Chen
- Department of NeurologyJiangxi Provincial Children's HospitalNanchangChina
| | - Fang He
- Department of Pediatrics, Xiangya HospitalCentral South UniversityChangshaChina
- Hunan Intellectual and Developmental Disabilities Research CenterChangshaChina
| | - Fei Yin
- Department of Pediatrics, Xiangya HospitalCentral South UniversityChangshaChina
- Hunan Intellectual and Developmental Disabilities Research CenterChangshaChina
| | - Tobias Stauber
- Department of Human Medicine and Institute for Molecular MedicineMSH Medical School HamburgHamburgGermany
| | - Xiaomin Zou
- Department of Pediatrics, Xiangya HospitalCentral South UniversityChangshaChina
- Hunan Intellectual and Developmental Disabilities Research CenterChangshaChina
| | - Jing Peng
- Department of Pediatrics, Xiangya HospitalCentral South UniversityChangshaChina
- Hunan Intellectual and Developmental Disabilities Research CenterChangshaChina
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Li L, Xie Y, Zeng S, Li X, Lin Z, Huang S, Zhao H, Cao W, Liu L, Liu J, Rong P, Zhang R. Expanding the genetic and clinical spectrum of SORD-related peripheral neuropathy by reporting a novel variant c.210T>G and evidence of subclinical muscle involvement. J Peripher Nerv Syst 2023; 28:608-613. [PMID: 37584201 DOI: 10.1111/jns.12591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/17/2023]
Abstract
BACKGROUND AND AIMS Biallelic variants in the sorbitol dehydrogenase (SORD) gene have been identified as the genetic cause of autosomal recessive (AR) peripheral neuropathy (PN) manifesting as Charcot-Marie-Tooth disease type 2 (CMT2) or distal hereditary motor neuropathy (dHMN). We aim to observe the genetic and clinical spectrum of a cohort of patients with SORD-related PN (SORD-PN). METHODS A total of 107 patients with AR or sporadic CMT2/dHMN underwent molecular diagnosis by whole-exome sequencing and subsequent Sanger sequencing validation. Available phenotypic data for SORD-PN were collected and analyzed. RESULTS Eleven (10.28%) of 107 patients were identified as SORD-PN, including four with CMT2 and seven with dHMN. The SORD variant c.210 T > G;p.His70Gln in F-d3 was firstly reported and subsequent analysis showed that it resulted in loss of SORD enzyme function. Evidence of subclinical muscle involvement was frequently detected in patients with SORD-PN, including mildly to moderately elevated serum creatine kinase (CK) levels in 10 patients, myogenic electrophysiological changes in one patient, and muscle edema in five patients undergoing lower extremity MRI. Fasting serum sorbitol level was 88-fold higher in SORD-PN patients (9.69 ± 1.07 mg/L) than in healthy heterozygous subjects (0.11 ± 0.01 mg/L) and 138-fold higher than in healthy controls (0.07 ± 0.02 mg/L). INTERPRETATION The novel SORD variant c.210 T > G;p.His70Gln and evidence of subclinical muscle involvement were identified, which expanded the genetic and clinical spectrum of SORD-PN. Subclinical muscle involvement might be a common but easily overlooked clinical feature. The serum CK and fasting serum sorbitol levels were expected to be sensitive biomarkers confirmed by follow-up cohort study.
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Affiliation(s)
- Lu Li
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yongzhi Xie
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Sen Zeng
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Xiaobo Li
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhiqiang Lin
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Shunxiang Huang
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Huadong Zhao
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Wanqian Cao
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Lei Liu
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
- Health Management Center, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Jun Liu
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Pengfei Rong
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Ruxu Zhang
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
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9
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Tian Y, Hou X, Cao W, Zhou L, Jiao B, Zhang S, Xiao Q, Xue J, Wang Y, Weng L, Fang L, Yang H, Zhou Y, Yi F, Chen X, Du J, Xu Q, Feng L, Liu Z, Zeng S, Sun Q, Xie N, Luo M, Wang M, Zhang M, Zeng Q, Huang S, Yao L, Hu Y, Long H, Xie Y, Chen S, Huang Q, Wang J, Xie B, Zhou L, Long L, Guo J, Wang J, Yan X, Jiang H, Xu H, Duan R, Tang B, Zhang R, Shen L. Diagnostic value of nerve conduction study in NOTCH2NLC-related neuronal intranuclear inclusion disease. J Peripher Nerv Syst 2023; 28:629-641. [PMID: 37749855 DOI: 10.1111/jns.12599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/18/2023] [Accepted: 09/22/2023] [Indexed: 09/27/2023]
Abstract
BACKGROUND AND AIMS Neuronal intranuclear inclusion disease (NIID) is a rare progressive neurodegenerative disorder mainly caused by abnormally expanded GGC repeats within the NOTCH2NLC gene. Most patients with NIID show polyneuropathy. Here, we aim to investigate diagnostic electrophysiological markers of NIID. METHODS In this retrospective dual-center study, we reviewed 96 patients with NOTCH2NLC-related NIID, 94 patients with genetically confirmed Charcot-Marie-Tooth (CMT) disease, and 62 control participants without history of peripheral neuropathy, who underwent nerve conduction studies between 2018 and 2022. RESULTS Peripheral nerve symptoms were presented by 53.1% of patients with NIID, whereas 97.9% of them showed peripheral neuropathy according to electrophysiological examinations. Patients with NIID were characterized by slight demyelinating sensorimotor polyneuropathy; some patients also showed mild axonal lesions. Motor nerve conduction velocity (MCV) of the median nerve usually exceeded 35 m/s, and were found to be negatively correlated with the GGC repeat sizes. Regarding the electrophysiological differences between muscle weakness type (n = 27) and non-muscle weakness type (n = 69) of NIID, nerve conduction abnormalities were more severe in the muscle weakness type involving both demyelination and axonal impairment. Notably, specific DWI subcortical lace sign was presented in only 33.3% of muscle weakness type, thus it was difficult to differentiate them from CMT. Combining age of onset, distal motor latency, and compound muscle action potential of the median nerve showed the optimal diagnostic performance to distinguish NIID from major CMT (AUC = 0.989, sensitivity = 92.6%, specificity = 97.4%). INTERPRETATION Peripheral polyneuropathy is common in NIID. Our study suggest that nerve conduction study is useful to discriminate NIID.
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Affiliation(s)
- Yun Tian
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Xuan Hou
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Wanqian Cao
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Lu Zhou
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Bin Jiao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Sizhe Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Qiao Xiao
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China
| | - Jin Xue
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China
| | - Ying Wang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Ling Weng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Liangjuan Fang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Honglan Yang
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yafang Zhou
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Fang Yi
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Xiaoyu Chen
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Juan Du
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Qian Xu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Li Feng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Zhenhua Liu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Sen Zeng
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Qiying Sun
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Nina Xie
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Mengchuan Luo
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Mengli Wang
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Mengqi Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Qiuming Zeng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Shunxiang Huang
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Lingyan Yao
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Yacen Hu
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Hongyu Long
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Yuanyuan Xie
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Si Chen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Qing Huang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Junpu Wang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Bin Xie
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Lin Zhou
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Lili Long
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Jifeng Guo
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Hunan International Scientific and Technological Cooperation Base of Neurodegenerative and Neurogenetic Diseases, Changsha, China
- Engineering Research Center of Hunan Province in Cognitive Impairment Disorders, Central South University, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
| | - Junling Wang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Xinxiang Yan
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Hong Jiang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Hunan International Scientific and Technological Cooperation Base of Neurodegenerative and Neurogenetic Diseases, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
| | - Hongwei Xu
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Ranhui Duan
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, China
| | - Beisha Tang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Hunan International Scientific and Technological Cooperation Base of Neurodegenerative and Neurogenetic Diseases, Changsha, China
- Engineering Research Center of Hunan Province in Cognitive Impairment Disorders, Central South University, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
| | - Ruxu Zhang
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Lu Shen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Hunan International Scientific and Technological Cooperation Base of Neurodegenerative and Neurogenetic Diseases, Changsha, China
- Engineering Research Center of Hunan Province in Cognitive Impairment Disorders, Central South University, Changsha, China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China
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10
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Deng Y, Pan J, Yang X, Yang S, Chi H, Yang X, Qu X, Sun S, You L, Hou C. Dual roles of nanocrystalline cellulose extracted from jute ( Corchorus olitorius L.) leaves in resisting antibiotics and protecting probiotics. Nanoscale Adv 2023; 5:6435-6448. [PMID: 38024324 PMCID: PMC10662138 DOI: 10.1039/d3na00345k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 08/14/2023] [Indexed: 12/01/2023]
Abstract
Antibiotics can cure diseases caused by bacterial infections, but their widespread use can have some side effects, such as probiotic reduction. There is an urgent need for such agents that can not only alleviate the damage caused by antibiotics, but also maintain the balance of the gut microbiota. In this study, we first characterized the nanocrystalline cellulose (NCC) extracted from plant jute (Corchorus olitorius L.) leaves. Next, we evaluated the protective effect of jute NCC and cellulose on human model gut bacteria (Lacticaseibacillus rhamnosus and Escherichia coli) under antibiotic stress by measuring bacterial growth and colony forming units. We found that NCC is more effective than cellulose in adsorbing antibiotics and defending the gut bacteria E. coli. Interestingly, the low-dose jute NCC clearly maintained the balance of key gut bacteria like Snodgrassella alvi and Lactobacillus Firm-4 in bees treated with tetracycline and reduced the toxicity caused by antibiotics. It also showed a more significant protective effect on human gut bacteria, especially L. rhamnosus, than cellulose. This study first demonstrated that low-dose NCC performed satisfactorily as a specific probiotic to mitigate the adverse effects of antibiotics on gut bacteria.
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Affiliation(s)
- Yanchun Deng
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences Changsha 410205 P. R. China
| | - Jiangpeng Pan
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences Changsha 410205 P. R. China
| | - Xiai Yang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences Changsha 410205 P. R. China
| | - Sa Yang
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences Beijing 100093 P. R. China
- Graduate School of Chinese Academy of Agricultural Sciences Beijing 100081 P. R. China
| | - Haiyang Chi
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences Changsha 410205 P. R. China
| | - Xiushi Yang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences Changsha 410205 P. R. China
| | - Xiaoxin Qu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences Changsha 410205 P. R. China
| | - Shitao Sun
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences Changsha 410205 P. R. China
| | - Linfeng You
- Department of Food and Biotechnology Engineering, Chongqing Technology and Business University Chongqing 400067 P. R. China
| | - Chunsheng Hou
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences Changsha 410205 P. R. China
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11
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Li W, Li S, Wang J, Yu M, Yang H, He Z, Tang Y, Liu J, Guo N, Xie D, Liu Z, Zheng K, Xu M, Wu Y. The outer membrane protein Tp92 of Treponema pallidum delays human neutrophil apoptosis via the ERK, PI3K/Akt, and NF-κB pathways. Mol Microbiol 2023; 120:684-701. [PMID: 37718557 DOI: 10.1111/mmi.15164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 09/01/2023] [Accepted: 09/03/2023] [Indexed: 09/19/2023]
Abstract
Syphilis is a persistent sexually transmitted disease caused by infiltration of the elusive pathogen Treponema pallidum. Despite the prevalence of human polymorphonuclear neutrophils (hPMNs) within cutaneous lesions, which are characteristic of incipient syphilis, their role in T. pallidum infection remains unclear. Tp92 is the only T. pallidum helical outer membrane protein that exhibits structural features similar to those of outer membrane proteins in other gram-negative bacteria. However, the functional mechanism of this protein in immune cells remains unclear. Neutrophils are short-lived cells that undergo innate apoptosis in response to external stimuli that typically influence this process. In this study, we determined that Tp92 impedes the activation of procaspase-3 via the ERK MAPK, PI3K/Akt, and NF-κB signaling pathways, consequently suppressing caspase-3 activity within hPMNs, and thereby preventing hPMNs apoptosis. Furthermore, Tp92 could also modulate hPMNs apoptosis by enhancing the expression of the anti-apoptotic protein Mcl-1, stimulating IL-8 secretion, and preserving the mitochondrial membrane potential. These findings provide valuable insights into the molecular mechanisms underlying T. pallidum infection and suggest potential therapeutic targets for syphilis treatment.
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Affiliation(s)
- Weiwei Li
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
- Department of Clinical Laboratory, The Second People's Hospital of Foshan, Foshan, China
| | - Sijia Li
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Jianye Wang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
- Key Laboratory of Immune Microenvironment and Disease of the Ministry of Education, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Maoying Yu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Hongyu Yang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Zhangping He
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Yuanyuan Tang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Jie Liu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Ningyuan Guo
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Dongde Xie
- Department of Clinical Laboratory, The Second People's Hospital of Foshan, Foshan, China
| | - Zhaoping Liu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Kang Zheng
- Department of Clinical Laboratory, Hengyang Central Hospital, Hengyang, China
| | - Man Xu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
| | - Yimou Wu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institution of Pathogenic Biology, University of South China, Hengyang, China
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12
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Gao L, Cao J, Gong S, Hao N, Du Y, Wang C, Wu T. The COPII subunit CsSEC23 mediates fruit glossiness in cucumber. Plant J 2023; 116:524-540. [PMID: 37460197 DOI: 10.1111/tpj.16389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 07/07/2023] [Indexed: 07/28/2023]
Abstract
To improve our understanding of the mechanism underlying cucumber glossiness regulation, a novel cucumber mutant with a glossy peel (Csgp) was identified. MutMap, genotyping, and gene editing results demonstrated that CsSEC23, which is the core component of COPII vesicles, mediates the glossiness of cucumber fruit peel. CsSEC23 is functionally conserved and located in the Golgi and endoplasmic reticulum. CsSEC23 could interact with CsSEC31, but this interaction was absent in the Csgp mutant, which decreased the efficiency of COPII vesicle transportation. Genes related to wax and cutin transport were upregulated in the Csgp mutant, and the cuticle structure of the Csgp-mutant peel became thinner. Moreover, the wax and cutin contents were also changed due to CsSEC23 mutation. Taken together, the results obtained from this study revealed that CsSEC23 mediates cucumber glossiness, and this mediating might be affected by COPII vesicle transportation.
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Affiliation(s)
- Luyao Gao
- College of Horticulture, Hunan Agricultural University, Changsha, 410128, China
- Key Laboratory for Evaluation and Utilization of Gene Resources of Horticultural Crops (vegetables, tea, etc.), Ministry of Agriculture and Rural Affairs of China, Changsha, 410128, China
- Yuelushan Lab, Changsha, 410128, China
| | - Jiajian Cao
- College of Horticulture, Hunan Agricultural University, Changsha, 410128, China
- Key Laboratory for Evaluation and Utilization of Gene Resources of Horticultural Crops (vegetables, tea, etc.), Ministry of Agriculture and Rural Affairs of China, Changsha, 410128, China
- Yuelushan Lab, Changsha, 410128, China
- Whampoa Innovation Research Institute, Hunan Agricultural University, Changsha, 410128, China
| | - Siyu Gong
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Ning Hao
- College of Horticulture, Hunan Agricultural University, Changsha, 410128, China
- Laboratory of Plant Nutrition and Fertilizers, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Yalin Du
- College of Horticulture, Hunan Agricultural University, Changsha, 410128, China
- Key Laboratory for Evaluation and Utilization of Gene Resources of Horticultural Crops (vegetables, tea, etc.), Ministry of Agriculture and Rural Affairs of China, Changsha, 410128, China
- Yuelushan Lab, Changsha, 410128, China
- Whampoa Innovation Research Institute, Hunan Agricultural University, Changsha, 410128, China
| | - Chunhua Wang
- College of Horticulture, Hunan Agricultural University, Changsha, 410128, China
- Key Laboratory for Evaluation and Utilization of Gene Resources of Horticultural Crops (vegetables, tea, etc.), Ministry of Agriculture and Rural Affairs of China, Changsha, 410128, China
- Yuelushan Lab, Changsha, 410128, China
- Whampoa Innovation Research Institute, Hunan Agricultural University, Changsha, 410128, China
| | - Tao Wu
- College of Horticulture, Hunan Agricultural University, Changsha, 410128, China
- Key Laboratory for Evaluation and Utilization of Gene Resources of Horticultural Crops (vegetables, tea, etc.), Ministry of Agriculture and Rural Affairs of China, Changsha, 410128, China
- Yuelushan Lab, Changsha, 410128, China
- Whampoa Innovation Research Institute, Hunan Agricultural University, Changsha, 410128, China
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13
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Gao Y, Chen H, Liu Y, Zhang X, Qiu Y, Huang D. Modifiable factors for benign salivary gland neoplasms: A Mendelian randomization study. Oral Dis 2023. [PMID: 37499050 DOI: 10.1111/odi.14682] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/19/2023] [Accepted: 07/07/2023] [Indexed: 07/29/2023]
Abstract
BACKGROUND Observational studies have found associations between smoking, alcohol, radiation, body mass index (BMI), periodontitis, and the hazard of benign salivary gland neoplasms (BSGNs). Nevertheless, the etiology of BSGNs remains unclear. This study aims to assess the causal association between these modifiable factors and the BSGNs. METHODS Genetic instruments associated with exposures at the genome-wide significance level were selected from corresponding genome-wide association studies. The summary statistics for BSGNs were obtained from the FinnGen consortium (2445 cases and 340,054 controls). The inverse variance-weighted method was used as the primary analysis, and several sensitivity analyses were performed to test the reliability. RESULTS Genetically predicted higher lifetime smoking index (odds ratio [OR] = 2.10, p = 0.012) and BMI (OR = 1.58, p = 2.29 × 10-5 ) were associated with elevated risk of BSGNs, whereas other exposures do not. Sensitivity analyses showed consistency. The causal effect of the lifetime smoking index became more significant after adjusting for BMI (OR = 2.89, p = 0.005) and alcohol consumption (OR = 2.49, p = 0.002). A slight negative association emerged for alcohol consumption with adjustment for cigarettes per day (OR = 0.53, p = 0.034) but disappeared when adjusting for cigarettes per day and BMI. CONCLUSION This study supports the independent causal role of lifetime smoking index and BMI in BSGNs risk.
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Affiliation(s)
- Yan Gao
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China
- Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China
- Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China
| | - Huihong Chen
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China
- Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China
- Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China
| | - Yong Liu
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China
- Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China
- Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
| | - Xin Zhang
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China
- Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China
- Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
| | - Yuanzheng Qiu
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China
- Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China
- Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
| | - Donghai Huang
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, China
- Otolaryngology Major Disease Research Key Laboratory of Hunan Province, Changsha, China
- Clinical Research Center for Pharyngolaryngeal Diseases and Voice Disorders in Hunan Province, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
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14
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Zhou F, Yao S, Shan F, Zhou Y. Serum zinc and periodontitis in non-diabetic smoking and non-smoking adults: NHANES 2011-2014. Oral Dis 2023. [PMID: 37338088 DOI: 10.1111/odi.14650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 05/27/2023] [Accepted: 06/07/2023] [Indexed: 06/21/2023]
Abstract
OBJECTIVE This study aimed to evaluate the association of serum zinc with periodontitis in non-diabetics based on smoking status, using a representative sample of adults in the United States. METHODS A total of 1051 participants who underwent full-mouth periodontal examination and serum zinc testing were enrolled from NHANES 2011 to 2014. The covariate-adjusted association of serum zinc concentrations with periodontitis was explored using multivariable logistic regression, restricted cubic spines, and sensitivity analysis. RESULTS The mean age of the 1051 adults was 54.5 years, 59.37% were male, and 20.65% had periodontitis. Analysis of the results showed that serum zinc was associated with periodontitis. The overall adjusted odds of periodontitis were 9% (odds ratio [OR]: 0.91; 95% confidence interval [CI]: 0.83-1.00) and 14% (OR: 0.86; 95% CI: 0.75-0.98) for nonsmokers and smokers, respectively. Smokers with T3 serum zinc exhibited a 53% reduction in the fully adjusted odds of periodontitis (OR: 0.47; 95% CI: 0.23-0.96), when compared to the reference group (T1 serum zinc), with serum zinc as the categorical variable. CONCLUSIONS Serum zinc levels were associated with the risk of periodontitis in non-diabetic smokers but not non-smokers.
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Affiliation(s)
- Fangjing Zhou
- Department of Endodontics, Changsha Stomatological Hospital, Hunan University of Chinese Medicine, Changsha, China
| | - Shixin Yao
- Department of Endodontics, Changsha Stomatological Hospital, Hunan University of Chinese Medicine, Changsha, China
| | - Fanxiu Shan
- Department of Endodontics, Changsha Stomatological Hospital, Hunan University of Chinese Medicine, Changsha, China
| | - Yang Zhou
- Department of Intensive Care Unit, Second Xiangya Hospital, Central South University, Changsha, China
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15
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Chen Q, Wei R, Li S. A preoperative nomogram model for the prediction of lymph node metastasis in buccal mucosa cancer. Cancer Med 2023. [PMID: 37184116 DOI: 10.1002/cam4.6076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 03/27/2023] [Accepted: 05/03/2023] [Indexed: 05/16/2023] Open
Abstract
OBJECTIVES We sought to construct a nomogram model predicting lymph node metastasis (LNM) in patients with squamous cell carcinoma of the buccal mucosa based on preoperative clinical characteristics. METHODS Patients who underwent radical resection of a primary tumor in the buccal mucosa with neck dissection were enrolled. Clinical characteristics independently associated with LNM in multivariate analyses were adopted to build the model. Patients at low risk of LNM were defined by a predicted probability of LNM of less than 5%. RESULTS Patients who underwent surgery in an earlier period (January 2015-November 2019) were defined as the model development cohort (n = 325), and those who underwent surgery later (November 2019-March 2021) were defined as the validation cohort (n = 140). Age, tumor differentiation, tumor thickness, and clinical N stage assessed by computed tomography/magnetic resonance imaging (cN) were independent predictors of LNM. The nomogram model based on these four predictors showed good discrimination accuracy in both the model development and validation cohorts, with areas under the receiver-operating characteristic curve (AUC) of 0.814 and 0.828, respectively. LNM prediction by the nomogram model was superior to cN in AUC comparisons (0.815 vs. 0.753) and decision curve analysis of the whole cohort. Seventy-one patients were defined as having a low risk of LNM, among whom the actual metastasis rate was only 1.4%. CONCLUSIONS A robust nomogram model for preoperative LNM prediction is built.
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Affiliation(s)
- Qian Chen
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Rui Wei
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Shan Li
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
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Xiao Y, He Y, Xu C, Li M, Hu F, Wang W, Wang Z, Cao Y. Exposure to MoS2 nanosheets or bulk activated Kruppel-like factor 4 in 3D Caco-2 spheroids in vitro and mouse intestines in vivo. Environ Toxicol 2023. [PMID: 37186336 DOI: 10.1002/tox.23819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 03/28/2023] [Accepted: 04/16/2023] [Indexed: 05/17/2023]
Abstract
MoS2 nanosheets (NSs) are novel 2D nanomaterials (NMs) being used in many important fields. Recently, we proposed the need to evaluate the influences of NMs on Kruppel-like factors (KLFs) even if these materials are relatively biocompatible. In this study, we investigated the influences of MoS2 NSs or bulk on KLF4 signaling pathway in 3D Caco-2 spheroids in vitro and mouse intestines in vivo. Through the analysis of our previous RNA-sequencing data, we found that exposure to MoS2 NSs or bulk activated KLF4 expression in 3D Caco-2 spheroids. Consistently, these materials also activated KLF4-related gene ontology (GO) terms and down-regulated a panel of KLF4-downstream genes. To verify these findings, we repeatedly exposed mice to MoS2 NSs or bulk materials via intragastrical administration (1 mg/kg bodyweight, once a day, for 4 days). It was shown that oral exposure to these materials decreased bodyweight, leading to relatively higher organ coefficients. As expected, exposure to both types of materials increased Mo elements as well as other trace elements, such as Zn, Fe, and Mn in mouse intestines. The exposure also induced morphological changes of intestines, such as shortening of intestinal villi and decreased crypt depth, which may result in decreased intestinal lipid staining. Consistent with RNA-sequencing data, we found that material exposure increased KLF4 protein staining in mouse intestines and decreased two KLF4 downstream proteins, namely extracellular signal-regulated kinase (ERK) and serine/threonine kinase (AKT). We concluded that MoS2 materials were capable to activate KLF4-signaling pathway in intestines both in vivo and in vitro.
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Affiliation(s)
- You Xiao
- Fifth Department of Anorectal, The Second Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, China
| | - Yuanyuan He
- Graduate School of Hunan University, Hunan University of Chinese Medicine, Changsha, China
| | - Chongsi Xu
- Fifth Department of Anorectal, The Second Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, China
| | - Mei Li
- Fifth Department of Anorectal, The Second Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, China
| | - Fan Hu
- Fifth Department of Anorectal, The Second Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, China
| | - Wei Wang
- Fifth Department of Anorectal, The Second Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, China
| | - Zhenquan Wang
- Third Department of Anorectal, The Second Affiliated Hospital of Hunan University of Traditional Chinese Medicine, Changsha, China
| | - Yi Cao
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, China
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Zhu HY, Tang YX, Xiao L, Wen SR, Wu YX, Yang ZQ, Zhou L, Xiao B, Feng L, Hu S. Metabolic profiles and correlation with surgical outcomes in mesial versus neocortical temporal lobe epilepsy. CNS Neurosci Ther 2023. [PMID: 37017415 PMCID: PMC10401181 DOI: 10.1111/cns.14209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 03/22/2023] [Accepted: 03/26/2023] [Indexed: 04/06/2023] Open
Abstract
AIMS Differentiating mesial temporal lobe epilepsy (MTLE) and neocortical temporal lobe epilepsy (NTLE) remains challenging. Our study characterized the metabolic profiles between MTLE and NTLE and their correlation with surgical prognosis using 18 F-FDG-PET. METHODS A total of 137 patients with intractable temporal lobe epilepsy (TLE) and 40 age-matched healthy controls were recruited. Patients were divided into the MTLE group (N = 91) and the NTLE group (N = 46). 18 F-FDG-PET was used to measure the metabolism of regional cerebra, which was analyzed using statistical parametric mapping. The volume of abnormal metabolism in cerebral regions and their relationship with surgical prognosis were calculated for each surgical patient. RESULTS The cerebral hypometabolism of MTLE was limited to the ipsilateral temporal and insular lobes (p < 0.001, uncorrected). The NTLE patients showed hypometabolism in the ipsilateral temporal, frontal, and parietal lobes (p < 0.001, uncorrected). The MTLE patients showed extensive hypermetabolism in cerebral regions (p < 0.001, uncorrected). Hypermetabolism in NTLE was limited to the contralateral temporal lobe and cerebellum, ipsilateral frontal lobe, occipital lobe, and bilateral thalamus (p < 0.001, uncorrected). Among patients who underwent resection of epileptic lesions, 51 (67.1%) patients in the MTLE group and 10 (43.5%) in the NTLE group achieved Engel class IA outcome (p = 0.041). The volumes of metabolic increase for the frontal lobe or thalamus in the MTLE group were larger in non-Engel class IA patients than Engel class IA patients (p < 0.05). CONCLUSIONS The spatial metabolic profile discriminated NTLE from MTLE. Hypermetabolism of the thalamus and frontal lobe in MTLE may facilitate preoperative counseling and surgical planning.
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Affiliation(s)
- Hao-Yue Zhu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Yong-Xiang Tang
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Ling Xiao
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Shi-Rui Wen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Yuan-Xia Wu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Zhi-Quan Yang
- Department of Neurosurgery, Xiangya Hospital, Central South University, 410008, Hunan, Changsha, China
| | - Luo Zhou
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Bo Xiao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Li Feng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- Department of Neurology, Xiangya Hospital, Central South University (Jiangxi Branch), Nanchang, Jiangxi, 330000, China
| | - Shuo Hu
- Department of Nuclear Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- Key Laboratory of Biological Nanotechnology of National Health Commission, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
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Wu X, Wen M, Zou Y, Gao X, Wei C, Liu R, Li J, Wang L, Li X, Liu YN, Chen W. Cold-catalytic antitumor immunity with pyroelectric black phosphorus nanosheets. Chem Sci 2022; 13:6842-6851. [PMID: 35774154 PMCID: PMC9200116 DOI: 10.1039/d2sc01894b] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/16/2022] [Indexed: 11/21/2022] Open
Abstract
Catalytic nanomedicine with the innate features of catalysts brings incomparable properties to biomedicine over traditional drugs. The temperature-dependent activity of catalysts provides catalytic nanomedicines with a facile strategy to control their therapeutic performance. Tuning catalytic nanomedicine by cold treatment (4-37 °C) is safe and desired for practical applications, but there is a lack of cold-catalytic platforms. Herein, with black phosphorus (BP) as a model pyroelectric nanocatalyst, we explored the potential of cold-catalysts for antitumor therapy. BP nanosheets with pyro-catalytic activity catalyze the generation of oxidative stress to activate antitumor immunity under cold treatment. Due to the cold-catalytic immunomodulation, immune memory was successfully achieved to prevent tumor metastasis and recurrence. Considering the safety and conductive depth (>10 mm) of cold in the body, pyroelectric nanocatalysts open up exciting opportunities for the development of cold-catalytic nanomedicine.
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Affiliation(s)
- Xianbo Wu
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University Changsha Hunan 410083 China
| | - Mei Wen
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University Changsha Hunan 410083 China
| | - Yuyan Zou
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University Changsha Hunan 410083 China
| | - Xinyu Gao
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University Changsha Hunan 410083 China
| | - Chuanwan Wei
- School of Chemistry and Chemical Engineering, University of South China Hengyang Hunan 421001 China
| | - Renyu Liu
- Xiangya Hospital, Central South University Changsha Hunan 410083 China
| | - Jianghua Li
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University Changsha Hunan 410083 China
| | - Long Wang
- Xiangya Hospital, Central South University Changsha Hunan 410083 China
| | - Xilong Li
- Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China Hefei 230026 China
| | - You-Nian Liu
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University Changsha Hunan 410083 China
| | - Wansong Chen
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University Changsha Hunan 410083 China
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19
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He S, Zhou P, Yang Y, Wang W, Sun LZ. 1T-CrO 2 monolayer: a high-temperature Dirac half-metal for high-speed spintronics. Nanoscale Adv 2021; 3:3093-3099. [PMID: 36133660 PMCID: PMC9418590 DOI: 10.1039/d0na00884b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 03/26/2021] [Indexed: 06/15/2023]
Abstract
Two-dimensional (2D) materials with complete spin-polarization, high-speed conduction electrons, large Curie temperatures and robust ferromagnetic ground states are desirable for spintronic applications. Based on first-principles calculations, we demonstrate that the 1T-CrO2 monolayer is an intrinsic 3d ferromagnetic Dirac half metal (DHM) with two symmetry protected Dirac cones near the Fermi level. The Fermi velocities (3.21 × 105 m s-1 and 4.85 × 105 m s-1) of the Dirac cones are in the same order as that of graphene, indicating its excellent transport properties. Its 2.48 eV half-metallic gap is large enough to prevent the spin-flip transition. Moreover, the two Dirac cones are robust against biaxial strain of up to ±4%. The robust ferromagnetism is mainly contributed by the 3d states of Cr and its Curie temperature is up to 507 K. Our results indicate that the ferromagnetic 1T-CrO2 monolayer is a promising candidate for high temperature, high efficiency spintronics applications.
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Affiliation(s)
- Shenda He
- Hunan Provincial Key Laboratory of Thin Film Materials and Devices, School of Materials Science and Engineering, Xiangtan University Xiangtan 411105 China
| | - Pan Zhou
- Hunan Provincial Key Laboratory of Thin Film Materials and Devices, School of Materials Science and Engineering, Xiangtan University Xiangtan 411105 China
| | - Yi Yang
- School of Materials Science and Engineering, Xiangtan University Xiangtan 411105 China
| | - Wei Wang
- Hunan Provincial Key Laboratory of Thin Film Materials and Devices, School of Materials Science and Engineering, Xiangtan University Xiangtan 411105 China
| | - L Z Sun
- Hunan Provincial Key Laboratory of Thin Film Materials and Devices, School of Materials Science and Engineering, Xiangtan University Xiangtan 411105 China
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20
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Wang A, Zou D, Zhang L, Zeng X, Wang H, Li L, Liu F, Ren B, Xiao Z. Environmental risk assessment in livestock manure derived biochars. RSC Adv 2019; 9:40536-40545. [PMID: 35542644 PMCID: PMC9076269 DOI: 10.1039/c9ra08186k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 11/25/2019] [Indexed: 11/21/2022] Open
Abstract
Livestock-manure-derived biochar is one of major products obtained from the pyrolysis of livestock manure. This study quantitatively assesses the pollution level and ecological risks associated with heavy metals in livestock manure and the biochar produced by its pyrolysis. The geo-accumulation index (GAI) values of heavy metals in livestock manure were significantly decreased (P < 0.05) and indicated to be at the grade of uncontaminated expected for Zn in pig-manure-derived biochar (PMB, 0.94, 800 °C) via pyrolysis. Therefore, Zn should be paid more attention in PMB. The risk factors (E r i ) result shows that heavy metals in biochars were significantly decreased (P < 0.05) with increasing pyrolysis temperature. Potential ecological risk index values revealed that the integrated risks from the heavy metals were significantly decreased (P < 0.05) after pyrolysis. Similarly, the risk assessment code values indicated that the risks from the heavy metals in livestock-manure-derived biochars were significantly decreased (P < 0.05) after pyrolysis. In summary, pyrolysis represents an effective treatment method for livestock manure and can provide an effective method to reduce the risks of environmental pollution.
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Affiliation(s)
- Andong Wang
- College of Bioscience and Biotechnology, Hunan Agricultural University Changsha Hunan 410128 P. R. China +86-731-84673603 +86-731-84673603
- Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province Changsha Hunan 410128 P. R. China
- Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production Changsha 410128 P. R. China
| | - Dongsheng Zou
- College of Bioscience and Biotechnology, Hunan Agricultural University Changsha Hunan 410128 P. R. China +86-731-84673603 +86-731-84673603
- Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province Changsha Hunan 410128 P. R. China
- Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production Changsha 410128 P. R. China
| | - Liqing Zhang
- College of Bioscience and Biotechnology, Hunan Agricultural University Changsha Hunan 410128 P. R. China +86-731-84673603 +86-731-84673603
- Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province Changsha Hunan 410128 P. R. China
- Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production Changsha 410128 P. R. China
| | - Xinyi Zeng
- College of Bioscience and Biotechnology, Hunan Agricultural University Changsha Hunan 410128 P. R. China +86-731-84673603 +86-731-84673603
- Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province Changsha Hunan 410128 P. R. China
- Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production Changsha 410128 P. R. China
| | - Hua Wang
- College of Bioscience and Biotechnology, Hunan Agricultural University Changsha Hunan 410128 P. R. China +86-731-84673603 +86-731-84673603
- Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province Changsha Hunan 410128 P. R. China
- Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production Changsha 410128 P. R. China
| | - Longcheng Li
- College of Bioscience and Biotechnology, Hunan Agricultural University Changsha Hunan 410128 P. R. China +86-731-84673603 +86-731-84673603
- Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province Changsha Hunan 410128 P. R. China
- Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production Changsha 410128 P. R. China
| | - Fen Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University Changsha Hunan 410128 P. R. China +86-731-84673603 +86-731-84673603
- Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province Changsha Hunan 410128 P. R. China
- Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production Changsha 410128 P. R. China
| | - Bo Ren
- College of Bioscience and Biotechnology, Hunan Agricultural University Changsha Hunan 410128 P. R. China +86-731-84673603 +86-731-84673603
- Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province Changsha Hunan 410128 P. R. China
- Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production Changsha 410128 P. R. China
| | - Zhihua Xiao
- College of Bioscience and Biotechnology, Hunan Agricultural University Changsha Hunan 410128 P. R. China +86-731-84673603 +86-731-84673603
- Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province Changsha Hunan 410128 P. R. China
- Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production Changsha 410128 P. R. China
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