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Wang Q, Xu J, Luo M, Jiang Y, Gu Y, Wang Q, He J, Sun Y, Lin Y, Feng L, Chen S, Hou T. Fasting mimicking diet extends lifespan and improves intestinal and cognitive health. Food Funct 2024; 15:4503-4514. [PMID: 38567489 DOI: 10.1039/d4fo00483c] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Caloric restriction is an effective means of extending a healthy lifespan. Fasting mimicking diet (FMD) is a growing pattern of caloric restriction. We found that FMD significantly prolonged the lifespan of prematurely aging mice. In naturally aging mice, FMD improved cognitive and intestinal health. Through a series of behavioral experiments, we found that FMD relieved anxiety and enhanced cognition in aged mice. In the intestine, the FMD cycles enhanced the barrier function, reduced senescence markers, and maintained T cell naïve-memory balance in the lamina propria mucosa. To further explore the causes of immune alterations, we examined changes in the stool microbiota using 16S rRNA sequencing. We found that FMD remodeled gut bacterial composition and significantly expanded the abundance of Lactobacillus johnsonii. Our research revealed that FMD has in-depth investigative value as an anti-aging intervention for extending longevity and improving cognition, intestinal function, and gut microbiota composition.
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Affiliation(s)
- Qingyi Wang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
- Prevention and Treatment Research Center of Senescent Disease, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
| | - Jilei Xu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
- Prevention and Treatment Research Center of Senescent Disease, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
| | - Man Luo
- Prevention and Treatment Research Center of Senescent Disease, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
- Department of Clinical Nutrition, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Yao Jiang
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
- Prevention and Treatment Research Center of Senescent Disease, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
- Department of Gastroenterology, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
| | - Yanrou Gu
- Department of Gastroenterology, Wenzhou No. 3 Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People's Hospital, Wenzhou, China
| | - Qiwen Wang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
- Prevention and Treatment Research Center of Senescent Disease, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
| | - Jiamin He
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
- Prevention and Treatment Research Center of Senescent Disease, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
| | - Yong Sun
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
- Prevention and Treatment Research Center of Senescent Disease, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
- Department of Gastroenterology, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
| | - Yifeng Lin
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
- Prevention and Treatment Research Center of Senescent Disease, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
- Department of Gastroenterology, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
| | - Lijun Feng
- Prevention and Treatment Research Center of Senescent Disease, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
- Department of Clinical Nutrition, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Shujie Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
- Prevention and Treatment Research Center of Senescent Disease, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
| | - Tongyao Hou
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
- Prevention and Treatment Research Center of Senescent Disease, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
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He J, Hou T, Wang Q, Wang Q, Jiang Y, Chen L, Xu J, Qi Y, Jia D, Gu Y, Gao L, Yu Y, Wang L, Kang L, Si J, Wang L, Chen S. L-arginine metabolism ameliorates age-related cognitive impairment by Amuc_1100-mediated gut homeostasis maintaining. Aging Cell 2024; 23:e14081. [PMID: 38236004 PMCID: PMC11019123 DOI: 10.1111/acel.14081] [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: 07/19/2023] [Revised: 12/04/2023] [Accepted: 12/21/2023] [Indexed: 01/19/2024] Open
Abstract
Aging-induced cognitive impairment is associated with a loss of metabolic homeostasis and plasticity. An emerging idea is that targeting key metabolites is sufficient to impact the function of other organisms. Therefore, more metabolism-targeted therapeutic intervention is needed to improve cognitive impairment. We first conducted untargeted metabolomic analyses and 16S rRNA to identify the aging-associated metabolic adaption and intestinal microbiome change. Untargeted metabolomic analyses of plasma revealed L-arginine metabolic homeostasis was altered during the aging process. Impaired L-arginine metabolic homeostasis was associated with low abundance of intestinal Akkermansia muciniphila (AKK) colonization in mice. Long-term supplementation of AKK outer membranes protein-Amuc_1100, rescued the L-arginine level and restored cognitive impairment in aging mice. Mechanically, Amuc_1100 acted directly as a source of L-arginine and enriched the L-arginine-producing bacteria. In aged brain, Amuc_1100 promoted the superoxide dismutase to alleviated oxidation stress, and increased nitric oxide, derivatives of L-arginine, to improve synaptic plasticity. Meanwhile, L-arginine repaired lipopolysaccharide-induced intestinal barrier damage and promoted growth of colon organoid. Our findings indicated that aging-related cognitive impairment was closely associated with the disorders of L-arginine metabolism. AKK-derived Amuc_1100, as a potential postbiotic, targeting the L-arginine metabolism, might provide a promising therapeutic strategy to maintain the intestinal homeostasis and cognitive function in aging.
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Affiliation(s)
- Jiamin He
- Department of GastroenterologySir Run Run Shaw Hospital, Zhejiang UniversityHangzhouChina
- Institution of GastroenterologyZhejiang UniversityHangzhouChina
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
| | - Tongyao Hou
- Department of GastroenterologySir Run Run Shaw Hospital, Zhejiang UniversityHangzhouChina
- Institution of GastroenterologyZhejiang UniversityHangzhouChina
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
| | - Qiwen Wang
- Department of GastroenterologySir Run Run Shaw Hospital, Zhejiang UniversityHangzhouChina
- Institution of GastroenterologyZhejiang UniversityHangzhouChina
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
| | - Qingyi Wang
- Department of GastroenterologySir Run Run Shaw Hospital, Zhejiang UniversityHangzhouChina
- Institution of GastroenterologyZhejiang UniversityHangzhouChina
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
| | - Yao Jiang
- Institution of GastroenterologyZhejiang UniversityHangzhouChina
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
- Department of GastroenterologySecond Affiliated Hospital of Zhejiang University School of MedicineHangzhouChina
| | - Luyi Chen
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
- Department of General PracticeSir Run Run Shaw Hospital, Zhejiang University School of MedicineHangzhouChina
| | - Jilei Xu
- Department of GastroenterologySir Run Run Shaw Hospital, Zhejiang UniversityHangzhouChina
- Institution of GastroenterologyZhejiang UniversityHangzhouChina
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
| | - Yadong Qi
- Department of GastroenterologySir Run Run Shaw Hospital, Zhejiang UniversityHangzhouChina
- Institution of GastroenterologyZhejiang UniversityHangzhouChina
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
| | - Dingjiacheng Jia
- Institution of GastroenterologyZhejiang UniversityHangzhouChina
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
- Department of GastroenterologySecond Affiliated Hospital of Zhejiang University School of MedicineHangzhouChina
| | - Yanrou Gu
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
- Department of Gastroenterology, Wenzhou People's HospitalWenzhou Medical UniversityWenzhouChina
| | - Lidan Gao
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
- Third Affiliated Hospital of Shanghai University, Wenzhou Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People's HospitalWenzhouChina
| | - Yingcong Yu
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
- Department of Gastroenterology, Wenzhou People's HospitalWenzhou Medical UniversityWenzhouChina
| | - Lan Wang
- Department of GastroenterologySir Run Run Shaw Hospital, Zhejiang UniversityHangzhouChina
- Institution of GastroenterologyZhejiang UniversityHangzhouChina
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
| | - Lijun Kang
- NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain‐Machine Integration, School of Brain Science and Brain MedicineZhejiang UniversityHangzhouChina
| | - Jianmin Si
- Department of GastroenterologySir Run Run Shaw Hospital, Zhejiang UniversityHangzhouChina
- Institution of GastroenterologyZhejiang UniversityHangzhouChina
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
| | - Liangjing Wang
- Institution of GastroenterologyZhejiang UniversityHangzhouChina
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
- Department of GastroenterologySecond Affiliated Hospital of Zhejiang University School of MedicineHangzhouChina
| | - Shujie Chen
- Department of GastroenterologySir Run Run Shaw Hospital, Zhejiang UniversityHangzhouChina
- Institution of GastroenterologyZhejiang UniversityHangzhouChina
- Prevention and Treatment Research Center for Senescent DiseaseZhejiang University School of MedicineHangzhouChina
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Gu Y, Gao L, He J, Luo M, Hu M, Lin Y, Li J, Hou T, Si J, Yu Y. β-Nicotinamide mononucleotide supplementation prolongs the lifespan of prematurely aged mice and protects colon function in ageing mice. Food Funct 2024; 15:3199-3213. [PMID: 38445897 DOI: 10.1039/d3fo05221d] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
Ageing is defined as the degeneration of physiological functions in numerous tissues and organs of an organism, which occurs with age. As we age, the gut undergoes a series of changes and weaknesses that may contribute to overall ageing. Emerging evidence suggests that β-nicotinamide mononucleotide (NMN) plays a role in regulating intestinal function, but there is still a lack of literature on its role in maintaining the colon health of ageing mice. In our research, Zmpste24-/- mice proved that NMN prolonged their life span and delayed senescence. This study was designed to investigate the effects of long-term intervention on regulating colon function in ageing mice. Our results indicated that NMN improved the pathology of intestinal epithelial cells and intestinal permeability by upregulating the expression of intestinal tight junction proteins and the number of goblet cells, increasing the release of anti-inflammatory factors, and increasing beneficial intestinal bacteria. NMN increased the expression of the proteins SIRT1, NMNAT2, and NMNAT3 and decreased the expression of the protein P53. It also regulated the activity of ISCs by increasing Wnt/β-catenin and Lgr5. Our findings also revealed that NMN caused a significant increase in the relative abundance of Akkermansia muciniphila and Bifidobacterium pseudolongum and notable differences in metabolic pathways related to choline metabolism in cancer. In summary, NMN supplementation can delay frailty in old age, aid healthy ageing, and delay gut ageing.
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Affiliation(s)
- Yanrou Gu
- Department of Gastroenterology, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People's Hospital, Wenzhou325035, China.
| | - Lidan Gao
- Department of Scientific Research Center, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People's Hospital, Wenzhou Maternal and Child Health Care Hospital, Wenzhou325035, China
| | - Jiamin He
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou310058, China.
- Institution of Gastroenterology, Zhejiang University, Hangzhou310058, China
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Hangzhou310058, China
| | - Man Luo
- Department of Clinical Nutrition, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou310058, China
| | - Mei Hu
- Department of Gastroenterology, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People's Hospital, Wenzhou325035, China.
| | - Yuxian Lin
- Department of Gastroenterology, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People's Hospital, Wenzhou325035, China.
| | - Jianxin Li
- Department of Gastroenterology, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People's Hospital, Wenzhou325035, China.
| | - Tongyao Hou
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou310058, China.
- Institution of Gastroenterology, Zhejiang University, Hangzhou310058, China
| | - Jianmin Si
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou310058, China.
- Institution of Gastroenterology, Zhejiang University, Hangzhou310058, China
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Hangzhou310058, China
| | - Yingcong Yu
- Department of Gastroenterology, The Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou People's Hospital, Wenzhou325035, China.
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Qi Y, He J, Zhang Y, Ge Q, Wang Q, Chen L, Xu J, Wang L, Chen X, Jia D, Lin Y, Xu C, Zhang Y, Hou T, Si J, Chen S, Wang L. Heat-inactivated Bifidobacterium adolescentis ameliorates colon senescence through Paneth-like-cell-mediated stem cell activation. Nat Commun 2023; 14:6121. [PMID: 37777508 PMCID: PMC10542354 DOI: 10.1038/s41467-023-41827-0] [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: 06/14/2022] [Accepted: 09/14/2023] [Indexed: 10/02/2023] Open
Abstract
Declined numbers and weakened functions of intestinal stem cells (ISCs) impair the integrity of the intestinal epithelium during aging. However, the impact of intestinal microbiota on ISCs in this process is unclear. Here, using premature aging mice (telomerase RNA component knockout, Terc-/-), natural aging mice, and in vitro colonoid models, we explore how heat-inactivated Bifidobacterium adolescentis (B. adolescentis) affects colon senescence. We find that B. adolescentis could mitigate colonic senescence-related changes by enhancing intestinal integrity and stimulating the regeneration of Lgr5+ ISCs via Wnt/β-catenin signaling. Furthermore, we uncover the involvement of Paneth-like cells (PLCs) within the colonic stem-cell-supporting niche in the B. adolescentis-induced ISC regeneration. In addition, we identify soluble polysaccharides (SPS) as potential effective components of B. adolescentis. Overall, our findings reveal the role of heat-inactivated B. adolescentis in maintaining the ISCs regeneration and intestinal barrier, and propose a microbiota target for ameliorating colon senescence.
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Affiliation(s)
- Yadong Qi
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jiamin He
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yawen Zhang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Qiwei Ge
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
- Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Qiwen Wang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
| | - Luyi Chen
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Department of General Practice, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jilei Xu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
| | - Lan Wang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xueqin Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
| | - Dingjiacheng Jia
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
- Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yifeng Lin
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
- Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Chaochao Xu
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
- Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Ying Zhang
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
- Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Tongyao Hou
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jianmin Si
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China.
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
| | - Shujie Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China.
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
| | - Liangjing Wang
- Institute of Gastroenterology, Zhejiang University, Hangzhou, Zhejiang, China.
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
- Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
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Lin A, Wang T, Li C, Pu F, Abdelrahman Z, Jin M, Yang Z, Zhang L, Cao X, Sun K, Hou T, Liu Z, Chen L, Chen Z. Association of Sarcopenia with Cognitive Function and Dementia Risk Score: A National Prospective Cohort Study. Metabolites 2023; 13:metabo13020245. [PMID: 36837864 PMCID: PMC9965467 DOI: 10.3390/metabo13020245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/01/2023] [Accepted: 02/07/2023] [Indexed: 02/11/2023] Open
Abstract
The relationship between skeletal muscle and cognitive disorders has drawn increasing attention. This study aims to examine the associations of sarcopenia with cognitive function and dementia risk score. Data on 1978 participants (aged 65 years and older) from the 2011 wave of the China Health and Retirement Longitudinal Study, with four follow-up waves to 2018, were used. Cognitive function was assessed by four dimensions, with a lower score indicating lower cognitive function. Dementia risk was assessed by a risk score using the Rotterdam Study Basic Dementia Risk Model (BDRM), with a higher score indicating a greater risk. Sarcopenia was defined when low muscle mass plus low muscle strength or low physical performance were met. We used generalized estimating equations to examine the associations of sarcopenia. In the fully adjusted models, sarcopenia was significantly associated with lower cognitive function (standardized, β = -0.15; 95% CIs: -0.26, -0.04) and a higher BDRM score (standardized, β = 0.42; 95% CIs: 0.29, 0.55). Our findings may provide a new avenue for alleviating the burden of cognitive disorders by preventing sarcopenia.
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Affiliation(s)
- Ailing Lin
- Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Ting Wang
- The Second Affiliated Hospital and School of Public Health, The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Chenxi Li
- The Second Affiliated Hospital and School of Public Health, The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Fan Pu
- The Second Affiliated Hospital and School of Public Health, The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Zeinab Abdelrahman
- Department of Neurobiology and Department of Orthopedics, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
- NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain–Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou 310003, China
- Department of Rehabilitation Medicine, First Affiliated Hospital, College of Medicine, Zhejiang University, 79 Qingchun Rd., Hangzhou 310003, China
| | - Mengqi Jin
- Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Zhenqing Yang
- The Second Affiliated Hospital and School of Public Health, The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Liming Zhang
- The Second Affiliated Hospital and School of Public Health, The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Xingqi Cao
- The Second Affiliated Hospital and School of Public Health, The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Kaili Sun
- The Second Affiliated Hospital and School of Public Health, The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Tongyao Hou
- Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Zuyun Liu
- The Second Affiliated Hospital and School of Public Health, The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
- Center for Clinical Big Data and Analytics of the Second Affiliated Hospital, Department of Big Data in Health Science School of Public Health, The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Zhejiang University School of Medicine, 866 Yuhangtang Rd., Hangzhou 310058, China
- Correspondence: or (Z.L.); (L.C.); (Z.C.); Tel.: +86-0571-87077127 (Z.L.); +86-0571-86002113 (L.C.); +86-13957116610 (Z.C.)
| | - Liying Chen
- Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
- Department of General Practice, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, 3 Qingchun East Rd., Hangzhou 310016, China
- Correspondence: or (Z.L.); (L.C.); (Z.C.); Tel.: +86-0571-87077127 (Z.L.); +86-0571-86002113 (L.C.); +86-13957116610 (Z.C.)
| | - Zuobing Chen
- Department of Rehabilitation Medicine, First Affiliated Hospital, College of Medicine, Zhejiang University, 79 Qingchun Rd., Hangzhou 310003, China
- Correspondence: or (Z.L.); (L.C.); (Z.C.); Tel.: +86-0571-87077127 (Z.L.); +86-0571-86002113 (L.C.); +86-13957116610 (Z.C.)
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Surucu A, Hou T. Embryonal rhabdomyosarcoma of oropharynx in a 65-year-old male with indolent clinical presentation and unusual morphology. Am J Clin Pathol 2022. [DOI: 10.1093/ajcp/aqac126.193] [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: 11/11/2022] Open
Abstract
Abstract
Introduction/Objective
Embryonal rhabdomyosarcoma (ERMS) is a malignant primitive mesenchymal tumor which commonly affects children and adolescence. Although head and neck area is a common location for ERMS, oropharynx is rarely involved. ERMS in adults often present with stage IV disease and show a relatively poor prognosis. Loss of heterozygosity in 11p15.5 is one of the common genetic findings in sporadic ERMS.
Methods/Case Report
A 65-year-old male with no significant medical history, presented with pharyngodynia and was found to have a polypoid mass originating from the pharyngeal surface of the soft palate and extends into the vallecula. He reported having this mass for a decade and having intermittent episodes of similar oropharyngeal symptoms which were usually resolved with antibiotics.
Results (if a Case Study enter NA)
Excisional biopsy shows a 2.4 cm polypoid mass with atypical cellular proliferation in submucosa. Tumor cells demonstrate ovoid to round nuclei and eosinophilic cytoplasm. No mitotic figure was found and Ki67 proliferation index was extremely low (<1%). Immunostains showed that the tumor cells are positive for Desmin and MyoD1. Scattered cells are positive for Myogenin. Due to the unusual clinical presentation and low proliferation activity, late onset of fetal rhabdomyoma was also considered in the differential diagnosis. The specimen was sent for chromosomal microarray which showed chromosomal gains and losses including loss of heterozygosity in chromosome 11. This finding together with cytologic atypia are mostly compatible with the diagnosis of ERMS. Post-biopsy MRI and PET-CT did not reveal any residual disease or distant metastasis. Patient has been followed up for 6 months after biopsy with no sign of recurrence.
Conclusion
Our case indicates that ERMS in adult can present with an indolent clinical process and low proliferating activity. Diagnosis can be challenging in this scenario. Chromosomal microarray is a useful tool to help confirm the diagnosis.
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Affiliation(s)
- A Surucu
- Pathology, Indiana University School of Medicine , Indianapolis, Indiana , United States
| | - T Hou
- Pathology, Indiana University School of Medicine , Indianapolis, Indiana , United States
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7
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Huang J, Huang W, Wang Q, Zhang C, Ni S, Sun D, Zhou Y, Hou T, Sun W, Chen Z, Wu YL. MA02.05 Dynamic Mutation Profiles of SCLC Transformation in NSCLC Patients Harboring Concurrent EGFR/TP53/RB1 Mutations. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Zhang Y, Zhang L, Zheng S, Li M, Xu C, Jia D, Qi Y, Hou T, Wang L, Wang B, Li A, Chen S, Si J, Zhuo W. Fusobacterium nucleatum promotes colorectal cancer cells adhesion to endothelial cells and facilitates extravasation and metastasis by inducing ALPK1/NF-κB/ICAM1 axis. Gut Microbes 2022; 14:2038852. [PMID: 35220887 PMCID: PMC8890384 DOI: 10.1080/19490976.2022.2038852] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Metastasis is the leading cause of death for colorectal cancer (CRC) patients, and the spreading tumor cells adhesion to endothelial cells is a critical step for extravasation and further distant metastasis. Previous studies have documented the important roles of gut microbiota-host interactions in the CRC malignancy, and Fusobacterium nucleatum (F. nucleatum) was reported to increase proliferation and invasive activities of CRC cells. However, the potential functions and underlying mechanisms of F. nucleatum in the interactions between CRC cells and endothelial cells and subsequent extravasation remain unclear. Here, we uncovered that F. nucleatum enhanced the adhesion of CRC cells to endothelial cells, promoted extravasation and metastasis by inducing ICAM1 expression. Mechanistically, we identified that F. nucleatum induced a new pattern recognition receptor ALPK1 to activate NF-κB pathway, resulting in the upregulation of ICAM1. Interestingly, the abundance of F. nucleatum in tumor tissues of CRC patients was positively associated with the expression levels of ALPK1 and ICAM1. Moreover, high expression of ALPK1 or ICAM1 was significantly associated with a shorter overall survival time of CRC patients. This study provides a new insight into the role of gut microbiota in engaging into the distant metastasis of CRC cells.
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Affiliation(s)
- Ying Zhang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China
| | - Lu Zhang
- Department of Cell Biology and Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China
| | - Sheng Zheng
- Cancer Center, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China,Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Mengjie Li
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China
| | - Chaochao Xu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China
| | - Dingjiacheng Jia
- Cancer Center, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China,Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Yadong Qi
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China
| | - Tongyao Hou
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China
| | - Lan Wang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China
| | - Boya Wang
- Institute of Gastroenterology, Zhejiang University, Hangzhou, China,Department of Pharmacy, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Aiqing Li
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China
| | - Shujie Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China,Shujie Chen Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang, China
| | - Jianmin Si
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China,Jianmin Si Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang, China
| | - Wei Zhuo
- Department of Cell Biology and Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China,CONTACT Wei Zhuo Department of Cell Biology and Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou310058, Zhejiang, China
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9
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Xu C, Fan L, Lin Y, Shen W, Qi Y, Zhang Y, Chen Z, Wang L, Long Y, Hou T, Si J, Chen S. Fusobacterium nucleatum promotes colorectal cancer metastasis through miR-1322/CCL20 axis and M2 polarization. Gut Microbes 2022; 13:1980347. [PMID: 34632963 PMCID: PMC8510564 DOI: 10.1080/19490976.2021.1980347] [Citation(s) in RCA: 73] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Colorectal cancer (CRC) is one of the most common malignant tumors and is associated with Fusobacterium nucleatum (F. nucleatum, Fn) infection. In this study, we explored the role of F. nucleatum in the CRC metastasis. Our results showed that the abundance of F. nucleatum was enriched in the feces and tumors of patients with CRC and tended to increase in stage IV compared to stage I in patients with metastatic CRC. Tumor-derived CCL20 activated by F. nucleatum not only increases CRC metastasis, but also participates in the reprograming of the tumor microenvironment. F. nucleatum promoted macrophage infiltration through CCL20 activation and simultaneously induced M2 macrophage polarization, enhancing the metastasis of CRC. In addition, we identified using database prediction and luciferase activity hat miR-1322, a candidate regulatory micro-RNA, could bind to CCL20 directly. F. nucleatum infection decreased the expression of miR-1322 by activating the NF-κB signaling pathway in CRC cells. In conclusion, F. nucleatum promotes CRC metastasis through the miR-1322/CCL20 axis and M2 polarization.
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Affiliation(s)
- Chaochao Xu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China
| | - Lina Fan
- Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yifeng Lin
- Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, Zhejiang, China
| | - Weiyi Shen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China,CONTACT Shujie Chen
| | - Yadong Qi
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China
| | - Ying Zhang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China
| | - Zhehang Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China
| | - Lan Wang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China
| | - Yanqin Long
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Tongyao Hou
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China,Tongyao Hou Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, 3 Qingchun East Road, Hangzho, 310003, China
| | - Jianmin Si
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, Zhejiang, China,Jianmin Si
| | - Shujie Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China,Institute of Gastroenterology, Zhejiang University, Hangzhou, China,Cancer Center, Zhejiang University, Hangzhou, Zhejiang, China,CONTACT Shujie Chen
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10
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Fan L, Qi Y, Qu S, Chen X, Li A, Hendi M, Xu C, Wang L, Hou T, Si J, Chen S. B. adolescentis ameliorates chronic colitis by regulating Treg/Th2 response and gut microbiota remodeling. Gut Microbes 2022; 13:1-17. [PMID: 33557671 PMCID: PMC7889144 DOI: 10.1080/19490976.2020.1826746] [Citation(s) in RCA: 86] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Inflammatory bowel disease (IBD) is defined as an immune dysregulation disease with poor prognosis. Various therapies based on gut microbe modulation have been proposed. In this study, we aim to explore the therapeutic effect of B. adolescentis on IBD, as well as the immune and microecology mechanism of B. adolescentis in IBD. The fecal level of B. adolescentis was decreased in the IBD patients compared with the normal people in our cohort and the GMrepo database. To further clarify the role of B. adolescentis in IBD, we induced chronic colitis with three cycles of dextran sulfate sodium (DSS). We found B. adolescentis gavage exhibited protective effects as evidenced by the significantly decreased diarrhea score, spleen weight, and increased colon length. Accordingly, the cumulative histological grading was decreased in the B. adolescentis administration group. In addition, tight junction protein and mucin family were enhanced after B. adolescentis treatment. Furthermore, distinct effects were found with decreased pro-inflammatory cytokines such as TNF-α, IL-6, IL-1β, IL-18, IL-22, IL-9 and increased anti-inflammatory cytokines IL-10, IL-4, IL-5. Importantly, the colon lamina propria in the B. adolescentis group consisted of more Treg and Th2 cells, which inhibited extreme gut inflammation. Additionally, 16srRNA sequencing showed an evident increase in the B:F ratio in the B. adolescentis group. In particular, B. adolescentis application inhibited the excessive growth of Akkermansia and Escherichia-Shigella in genus level. In conclusion, B. adolescentis refined the DSS-induced chronic colitis by stimulating protective Treg/Th2 response and gut microbiota remodeling. B. adolescentis regularly treatment might improve the therapeutic effects for inflammatory bowel disease.
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Affiliation(s)
- Lina Fan
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Zhejiang, China,Institute of Gastroenterology, Zhejiang University, Zhejiang, China
| | - Yadong Qi
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Zhejiang, China,Institute of Gastroenterology, Zhejiang University, Zhejiang, China
| | - Siwen Qu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Zhejiang, China,Institute of Gastroenterology, Zhejiang University, Zhejiang, China
| | - Xueqin Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Zhejiang, China,Institute of Gastroenterology, Zhejiang University, Zhejiang, China
| | - Aiqing Li
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Zhejiang, China,Institute of Gastroenterology, Zhejiang University, Zhejiang, China
| | - Maher Hendi
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Zhejiang, China
| | - Chaochao Xu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Zhejiang, China,Institute of Gastroenterology, Zhejiang University, Zhejiang, China
| | - Lan Wang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Zhejiang, China,Institute of Gastroenterology, Zhejiang University, Zhejiang, China
| | - Tongyao Hou
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Zhejiang, China,Institute of Gastroenterology, Zhejiang University, Zhejiang, China,Tongyao Hou Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, 3 Qingchun East Road, Hangzhou, China, 310016
| | - Jianmin Si
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Zhejiang, China,Institute of Gastroenterology, Zhejiang University, Zhejiang, China,Jianmin Si
| | - Shujie Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Zhejiang, China,Institute of Gastroenterology, Zhejiang University, Zhejiang, China,CONTACT Shujie Chen
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11
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Shen W, He J, Hou T, Si J, Chen S. Common Pathogenetic Mechanisms Underlying Aging and Tumor and Means of Interventions. Aging Dis 2022; 13:1063-1091. [PMID: 35855334 PMCID: PMC9286910 DOI: 10.14336/ad.2021.1208] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 12/07/2021] [Indexed: 11/22/2022] Open
Abstract
Recently, there has been an increase in the incidence of malignant tumors among the older population. Moreover, there is an association between aging and cancer. During the process of senescence, the human body suffers from a series of imbalances, which have been shown to further accelerate aging, trigger tumorigenesis, and facilitate cancer progression. Therefore, exploring the junctions of aging and cancer and searching for novel methods to restore the junctions is of great importance to intervene against aging-related cancers. In this review, we have identified the underlying pathogenetic mechanisms of aging-related cancers by comparing alterations in the human body caused by aging and the factors that trigger cancers. We found that the common mechanisms of aging and cancer include cellular senescence, alterations in proteostasis, microbiota disorders (decreased probiotics and increased pernicious bacteria), persistent chronic inflammation, extensive immunosenescence, inordinate energy metabolism, altered material metabolism, endocrine disorders, altered genetic expression, and epigenetic modification. Furthermore, we have proposed that aging and cancer have common means of intervention, including novel uses of common medicine (metformin, resveratrol, and rapamycin), dietary restriction, and artificial microbiota intervention or selectively replenishing scarce metabolites. In addition, we have summarized the research progress of each intervention and revealed their bidirectional effects on cancer progression to compare their reliability and feasibility. Therefore, the study findings provide vital information for advanced research studies on age-related cancers. However, there is a need for further optimization of the described methods and more suitable methods for complicated clinical practices. In conclusion, targeting aging may have potential therapeutic effects on aging-related cancers.
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Affiliation(s)
- Weiyi Shen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, Zhejiang, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang, China.
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China
| | - Jiamin He
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, Zhejiang, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang, China.
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China
| | - Tongyao Hou
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, Zhejiang, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang, China.
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China
- Correspondence should be addressed to: Dr. Shujie Chen (), Dr. Jianmin Si () and Dr. Tongyao Hou (), Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang, China
| | - Jianmin Si
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, Zhejiang, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang, China.
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China
- Correspondence should be addressed to: Dr. Shujie Chen (), Dr. Jianmin Si () and Dr. Tongyao Hou (), Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang, China
| | - Shujie Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, Zhejiang, China.
- Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang, China.
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China
- Correspondence should be addressed to: Dr. Shujie Chen (), Dr. Jianmin Si () and Dr. Tongyao Hou (), Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang, China
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12
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Chen S, Chen L, Qi Y, Xu J, Ge Q, Fan Y, Chen D, Zhang Y, Wang L, Hou T, Yang X, Xi Y, Si J, Kang L, Wang L. Bifidobacterium adolescentis regulates catalase activity and host metabolism and improves healthspan and lifespan in multiple species. Nat Aging 2021; 1:991-1001. [PMID: 37118342 DOI: 10.1038/s43587-021-00129-0] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 09/27/2021] [Indexed: 04/30/2023]
Abstract
To identify candidate bacteria associated with aging, we performed fecal microbiota sequencing in young, middle-aged and older adults, and found lower Bifidobacterium adolescentis abundance in older individuals aged ≥60 years. Dietary supplementation of B. adolescentis improved osteoporosis and neurodegeneration in a mouse model of premature aging (Terc-/-) and increased healthspan and lifespan in Drosophila melanogaster and Caenorhabditis elegans. B. adolescentis supplementation increased the activity of the catalase (CAT) enzyme in skeletal muscle and brain tissue from Terc-/- mice, and suppressed cellular senescence in mouse embryonic fibroblasts. Transgenic deletion of catalase (ctl-2) in C. elegans abolished the effects of B. adolescentis on the lifespan and healthspan. B. adolescentis feeding also led to changes in oxidative stress-associated metabolites in Terc-/- mouse feces. These results suggest a role for B. adolescentis in improving the healthspan and lifespan through the regulation of CAT activity and host metabolism.
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Affiliation(s)
- Shujie Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Zhejiang, China
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China
| | - Luyi Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Zhejiang, China
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China
| | - Yadong Qi
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Zhejiang, China
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China
| | - Jilei Xu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Zhejiang, China
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China
| | - Qiwei Ge
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China
- Department of Gastroenterology, Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, China
| | - Yuedan Fan
- Department of Neurobiology and Department of Neurosurgery of the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, China
- NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Zhejiang, China
| | - Du Chen
- Department of Neurobiology and Department of Neurosurgery of the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, China
- NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Zhejiang, China
| | - Yawen Zhang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Zhejiang, China
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China
| | - Lan Wang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Zhejiang, China
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China
| | - Tongyao Hou
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Zhejiang, China
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China
| | - Xiaohang Yang
- Institute of Genetics and Department of Genetics, Division of Human Reproduction and Developmental Genetics of the Women's Hospital, Zhejiang University, Zhejiang, China
| | - Yongmei Xi
- Institute of Genetics and Department of Genetics, Division of Human Reproduction and Developmental Genetics of the Women's Hospital, Zhejiang University, Zhejiang, China
| | - Jianmin Si
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Zhejiang, China.
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China.
| | - Lijun Kang
- Department of Neurobiology and Department of Neurosurgery of the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, China.
- NHC and CAMS Key Laboratory of Medical Neurobiology, MOE Frontier Science Center for Brain Research and Brain-Machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Zhejiang, China.
| | - Liangjing Wang
- Prevention and Treatment Research Center for Senescent Disease, Zhejiang University School of Medicine, Zhejiang, China.
- Department of Gastroenterology, Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, China.
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13
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Muldoon J, Hou T. Mass-forming chronic invasive fungal sinusitis; an uncommon mimicker of head & neck malignancy. Am J Clin Pathol 2021. [DOI: 10.1093/ajcp/aqab191.180] [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: 11/14/2022] Open
Abstract
Abstract
Introduction/Objective
Invasive fungal sinusitis is a progressive infection affecting the nasal cavity and associated sinus spaces. Acute forms affect immunocompromised patients with debilitating systemic diseases while chronic forms usually occur in immunocompetent individuals.
Methods/Case Report
A 26-year-old immunocompetent male with daily Marijuana smoking consulted for acute swelling of the right eye with dull pain, photophobia, loss of vision and pressure of 4 day duration. He reported nasal congestion for approximately one year and over the previous 2 months developed exophthalmos. Imaging demonstrated a 4.9 x 4.3 x 4.1 cm invasive soft tissue mass in the right lamina papyracea with involvement of the paranasal sinus, right orbit, and intracranial space. The mass was presumed to represent a high-grade malignancy.
Biopsy was performed and demonstrated granulomatous invasive fungal sinusitis. The patient underwent right orbitotomy and right extranasal ethmoidectomy. He was begun on empiric amphotericin B. After culture and sequencing identification of Curvularia species, voriconazole was added. Follow up imaging studies after two month of treatment still demonstrated residual mass forming lesion with 10-20% decrease in size. The patient has regained his vision after 4 month of treatment and he is expected to complete a six months course. If the mass forming lesion persists, a second round of surgical debridement will be performed.
Results (if a Case Study enter NA)
N/A
Conclusion
Curvularia is a dematiaceous fungus most commonly associated with allergic sinusitis, but can rarely become invasive in immunocompetent individuals. Histopathologically large fungal elements are easily recognizable but specific identification requires culture or ribosomal DNA sequencing by PCR. Mass-forming chronic fungal sinusitis overlaps clinically and radiologically with head and neck malignancies. Our report brings attention to this uncommon clinical variant of invasive fungal sinusitis that affects immunocompetent individuals.
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Affiliation(s)
- J Muldoon
- Pathology, Indiana University School of Medicine, Greenwood, Indiana, UNITED STATES
| | - T Hou
- Pathology, Indiana University School of Medicine, Greenwood, Indiana, UNITED STATES
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14
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Abu-Salah AK, Hou T. Amyloid deposition in oral cavity and larynx, a single institute experience. Am J Clin Pathol 2021. [DOI: 10.1093/ajcp/aqab191.182] [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: 11/12/2022] Open
Abstract
Abstract
Introduction/Objective
Amyloidosis is characterized by extracellular accumulation of insoluble amyloid fibril. Amyloid deposition in the head and neck area is rare.
Methods/Case Report
In this study, we reviewed 34 specimens from 26 patients including: 18 specimens from the larynx and/or pharynx (13 patients) and 16 specimens from the oral cavity (13 patients). The clinical presentation, related laboratory results, and pathologic finding were reviewed.
Results (if a Case Study enter NA)
Within the 18 laryngeal specimens were: 10 glottic, 4 supraglottic, 3 nasopharyngeal or pharyngeal wall, and 1 subglottic. Of the 16 cases from oral cavity there were 9 lingual, 3 labial, 2 palatine, 1 tonsillar, and 1 alveolar ridge. Ten out of 13 patients with laryngeal amyloid deposition had protein electrophoresis performed and only 3 of the patients had monoclonal light chain detected. Among these three patients, one had multiple myeloma, one had lymphoplasmacytic lymphoma and one had the diagnosis of plasma cell dyscrasia. Interestingly, in the patients with oral cavity amyloidosis, 10 out of 11 patients tested had abnormal findings. Six of the patients had monoclonal light chain, two demonstrated monoclonal peak of IgG kappa, one with IgG lambda and one with IgA lambda. Among these 10 patients, 6 of them had biopsy-proved or history of multiple myeloma, one patient had marginal zone lymphoma, two patients had systematic amyloidosis. Only one patient did not have any malignancy or systematic involvement identified.
Conclusion
In our small cohort, the most common location of amyloid deposition in the larynx is glottis. When it involves the oral cavity, tongue is the most common location. Compared to the larynx, amyloid deposition in the oral cavity tends to be associated with hematopoietic malignancy or systematic involvement, although this finding needs to be confirmed by a larger scale of study.
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Affiliation(s)
- A K Abu-Salah
- Pathology, Indiana University school of medicine, Indianapolis, Indiana, UNITED STATES
| | - T Hou
- Pathology, Indiana University school of medicine, Indianapolis, Indiana, UNITED STATES
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Wang Q, Qi Y, Shen W, Xu J, Wang L, Chen S, Hou T, Si J. The Aged Intestine: Performance and Rejuvenation. Aging Dis 2021; 12:1693-1712. [PMID: 34631215 PMCID: PMC8460310 DOI: 10.14336/ad.2021.0202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 12/16/2020] [Accepted: 02/02/2021] [Indexed: 12/12/2022] Open
Abstract
Owing to the growing elderly population, age-related problems are gaining increasing attention from the scientific community. With senescence, the intestine undergoes a spectrum of changes and infirmities that are likely the causes of overall aging. Therefore, identification of the aged intestine and the search for novel strategies to rescue it, are required. Although progress has been made in research on some components of the aged intestine, such as intestinal stem cells, the comprehensive understanding of intestinal aging is still limited, and this restricts the in-depth search for efficient strategies. In this concise review, we discuss several aspects of intestinal aging. More emphasis is placed on the appraisal of current and potential strategies to alleviate intestinal aging, as well as future targets to rejuvenate the aged intestine.
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Affiliation(s)
- Qiwen Wang
- 1Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.,2Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
| | - Yadong Qi
- 1Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.,2Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
| | - Weiyi Shen
- 1Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.,2Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
| | - Jilei Xu
- 1Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.,2Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
| | - Lan Wang
- 1Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.,2Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
| | - Shujie Chen
- 1Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.,2Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
| | - Tongyao Hou
- 1Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.,2Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
| | - Jianmin Si
- 1Department of Gastroenterology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, Zhejiang Province, China.,2Institute of Gastroenterology, Zhejiang University, Hangzhou 310016, Zhejiang Province, China
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16
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Gou Q, Zhang CZ, Sun ZH, Wu LG, Chen Y, Mo ZQ, Mai QC, He J, Zhou ZX, Shi F, Cui W, Zou W, Lv L, Zhuang WH, Xu RD, Li WK, Zhang J, Du HW, Xiang JX, Wang HZ, Hou T, Li ST, Li Y, Chen XM, Zhou ZJ. Cell-free DNA from bile outperformed plasma as a potential alternative to tissue biopsy in biliary tract cancer. ESMO Open 2021; 6:100275. [PMID: 34653800 PMCID: PMC8517551 DOI: 10.1016/j.esmoop.2021.100275] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 07/22/2021] [Accepted: 09/06/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Biliary tract cancers (BTCs) are rare and highly heterogenous malignant neoplasms. Because obtaining BTC tissues is challenging, the purpose of this study was to explore the potential roles of bile as a liquid biopsy medium in patients with BTC. PATIENTS AND METHODS Sixty-nine consecutive patients with suspected BTC were prospectively enrolled in this study. Capture-based targeted sequencing was performed on tumor tissues, whole blood cells, plasma, and bile samples using a large panel consisting of 520 cancer-related genes. RESULTS Of the 28 patients enrolled in this cohort, tumor tissues were available in eight patients, and plasma and bile were available in 28 patients. Somatic mutations were detected in 100% (8/8), 71.4% (20/28), and 53.6% (15/28) of samples comprising tumor tissue DNA, bile cell-free DNA (cfDNA), and plasma cfDNA, respectively. Bile cfDNA showed a significantly higher maximum allele frequency than plasma cfDNA (P = 0.0032). There were 56.2% of somatic single-nucleotide variant (SNVs)/insertions and deletions (indels) shared between bile and plasma cfDNA. When considering the genetic profiles of tumor tissues as the gold standard, the by-variant sensitivity and positive predictive value for SNVs/indels in bile cfDNA positive for somatic mutations were both 95.5%. The overall concordance for SNVs/indels in bile was significantly higher than that in plasma (99.1% versus 78.3%, P < 0.0001). Moreover, the sensitivity of CA 19-9 combined with bile cfDNA achieved 96.4% in BTC diagnosis. CONCLUSION We demonstrated that bile cfDNA was superior to plasma cfDNA in the detection of tumor-related genomic alterations. Bile cfDNA as a minimally invasive liquid biopsy medium might be a supplemental approach to confirm BTC diagnosis.
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Affiliation(s)
- Q Gou
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - C Z Zhang
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Z H Sun
- Department of Surgery, The First Affiliated Hospital of Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - L G Wu
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Y Chen
- Department of Pathology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, School of Medicine, Guangzhou, Guangdong, China
| | - Z Q Mo
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Q C Mai
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - J He
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Z X Zhou
- Department of General Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - F Shi
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - W Cui
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - W Zou
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - L Lv
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - W H Zhuang
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - R D Xu
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - W K Li
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - J Zhang
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - H W Du
- Burning Rock Biotech, Guangzhou, China
| | - J X Xiang
- Burning Rock Biotech, Guangzhou, China
| | - H Z Wang
- Burning Rock Biotech, Guangzhou, China
| | - T Hou
- Burning Rock Biotech, Guangzhou, China
| | - S T Li
- Burning Rock Biotech, Guangzhou, China
| | - Y Li
- Burning Rock Biotech, Guangzhou, China
| | - X M Chen
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China.
| | - Z J Zhou
- Department of Interventional Therapy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China.
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17
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Xia B, Xing J, Ai Q, Li H, Xu M, Hou T. [Expression profile of intervertebral disc degeneration-specific genes: a transcriptome sequencing-based analysis]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:883-890. [PMID: 34238741 DOI: 10.12122/j.issn.1673-4254.2021.06.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To identify new therapeutic targets for intervertebral disc degeneration (IDD) by analyzing gene variations in IDD. OBJECTIVE We analyzed surgical samples of intervertebral disc from 4 patients with IDD and 3 patients with non-IDD using RNA sequencing (RNA-seq) technology to identify significant differentially expressed genes (DEGs) in IDD. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) databases were utilized for gene enrichment studies to acquire the key genes and signal pathways during IDD progression. The differential expressions of the identified genes in IDD were validated in clinical samples with qRT-PCR. OBJECTIVE The transcriptome profile revealed 512 significant DEGs, which were enriched in terms of keratinization, extracellular matrix (ECM) components, growth factor binding, and inflammatory chemotaxis in GO analysis. The top 10 terms of KEGG enrichment included amoebiasis, viral protein interaction with cytokine and cytokine receptor, ECM-receptor interaction, IL-17 signaling pathway, cytokine-cytokine receptor interaction, TNF signaling pathway, AGE-RAGE signaling pathway in diabetic complications, PI3K-Akt signaling pathway, chemokine signaling pathway and estrogen signaling pathway. Thirteen DEGs selected as the targets for qRT-PCR validation showed significant differential expressions in IDD (P < 0.001), and their expression trends were all consistent with the results of RNA-seq. Among these genes, 10 genes showed significant intergroup fold change (Log2FoldChange>1). OBJECTIVE ECM, growth factors, collagen components, inflammatory chemokines and such signal pathways as TNF-α and PI3K-Akt all have important contributions to IDD progression and may thus serve as new therapeutic targets for treatment of IDD.
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Affiliation(s)
- B Xia
- Department of Orthopedics, First Affiliated Hospital of Army Medical University, Chongqing 400038, China
| | - J Xing
- Department of Orthopedics, First Affiliated Hospital of Army Medical University, Chongqing 400038, China
| | - Q Ai
- Department of Orthopedics, First Affiliated Hospital of Army Medical University, Chongqing 400038, China
| | - H Li
- Department of Orthopedics, First Affiliated Hospital of Army Medical University, Chongqing 400038, China
| | - M Xu
- Department of Orthopedics, First Affiliated Hospital of Army Medical University, Chongqing 400038, China
| | - T Hou
- Department of Orthopedics, First Affiliated Hospital of Army Medical University, Chongqing 400038, China
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18
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Wang P, Wu D, Xie Y, Shi X, Hou T, Chen S, Xiang J, Shao L. P89.09 The Landscape of Kinase Domain Duplication (KDD) in Chinese Lung Cancer Patients. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1274] [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: 11/29/2022]
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19
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Bian Y, Guo G, Liu F, Chen X, Wang Z, Hou T. Meptyldinocap and azoxystrobin residue behaviors in different ecosystems under open field conditions and distribution on processed cucumber. J Sci Food Agric 2020; 100:648-655. [PMID: 31577839 DOI: 10.1002/jsfa.10059] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 09/11/2019] [Accepted: 09/25/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Several diseases and insects may cause damage to the normal growth of cucumber. Azoxystrobin and meptyldinocap, because of their novel mode of action, are effective against pathogens that have developed reduced sensitivity to other fungicides. Azoxystrobin is persistent in various crops and environments. However, there is a lack of research on the dissipation of these two pesticides, especially meptyldinocap. RESULTS Analytes could be quantified with decent recoveries of 90-101%, with relative standard deviations (RSDs) of 3.0-10.1%. The terminal residues of meptyldinocap and azoxystrobin in cucumber were all < limit of quantification (LOQ) (0.02 and 0.05 mg kg-1 ). The half-lives of meptyldinocap and azoxystrobin were 0.8-1.1 and 1.2-2.8 days, respectively. The processing factors (PFs) for washing were all < 1, but the removal rate for washing was < 29.0%. Peeling had a significant effect on the removal of pesticide. The largest residue reductions were noticed through the pickling process, but special care should be taken regarding residues in the pickling solution as pesticides could transfer to them from cucumber. A more interesting finding was that the degradation of two pesticides was accelerated by the addition of calcium oxide. CONCLUSION Pesticide residues on cucumber decreased after these processes. These results enable the health-risks from dietary exposures to pesticide residues to be characterized. They enable maximum residue limits (MRLs) to be established for pesticide residues in food products. They also assist the optimization of food processing with regard to pesticide residue dissipation. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Yanli Bian
- College of Science, China Agricultural University, Beijing, China
| | - Gang Guo
- College of Science, China Agricultural University, Beijing, China
| | - Fengmao Liu
- College of Science, China Agricultural University, Beijing, China
| | - Xiaochu Chen
- College of Science, China Agricultural University, Beijing, China
| | - Zongyi Wang
- BeiJing Key Laboratory of Detection and Control of Spoilage Microorganisms and Pesticide Residues in Agricultural Products, Beijing University of Agricultural, Beijing, China
| | - Tongyao Hou
- BeiJing Key Laboratory of Detection and Control of Spoilage Microorganisms and Pesticide Residues in Agricultural Products, Beijing University of Agricultural, Beijing, China
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Wang W, Teng P, Liu F, Fan T, Peng Q, Wang Z, Hou T. Residue Analysis and Risk Assessment of Oxathiapiprolin and Its Metabolites in Cucumbers under Field Conditions. J Agric Food Chem 2019; 67:12904-12910. [PMID: 31657925 DOI: 10.1021/acs.jafc.9b03961] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, a rapid, sensitive, and selective method was established for the detection of oxathiapiprolin and the metabolite IN-E8S72, as well as its glucose conjugate IN-SXS67 in cucumber using modified QuEChERS procedure combined with HPLC-MS/MS. The LOQs for all compounds were 0.02 mg kg-1, and the average recoveries were 77.4-111.3% with RSDs of 1.0-8.5%. Under the optimized conditions, the established method was successfully used to determine field samples in dissipation and terminal residue studies. The dissipation study results showed that oxathiapiprolin dissipated rapidly in cucumber with half-lives of 2.4-4.0 days. On the basis of the terminal residue results, the risk assessment was conducted, and both the international estimated daily intake (IEDI) or national estimated daily intake (NEDI) of oxathiapiprolin were much less than 100% which indicate a low health risk to consumers. This work provides guidance for establishing MRL of oxathiapiprolin in China and is of great significance for evaluating its dietary risk in cucumber.
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Affiliation(s)
- Wenzhuo Wang
- Department of Applied Chemistry, College of Science , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Peipei Teng
- Department of Applied Chemistry, College of Science , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Fengmao Liu
- Department of Applied Chemistry, College of Science , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Tingting Fan
- Department of Applied Chemistry, College of Science , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Qingrong Peng
- Department of Applied Chemistry, College of Science , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Zongyi Wang
- Beijing Key Laboratory of Detection and Control of Spoilage Microorganisms and Pesticide Residues in Agricultural Products , Beijing University of Agriculture , Beijing 102206 , People's Republic of China
| | - Tongyao Hou
- Beijing Key Laboratory of Detection and Control of Spoilage Microorganisms and Pesticide Residues in Agricultural Products , Beijing University of Agriculture , Beijing 102206 , People's Republic of China
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21
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Zang YS, Jiao XD, Zhang XC, Qin B, Liu D, Liu L, Ni J, Ning Z, Chen L, Zhu L, Qin S, Zhou J, Ying S, Chen X, Li A, Hou T, Lizaso A, Zhang HH, Liu K, Wang Z. Tumour mutation burden analysis in a 5660-cancer-patient cohort reveals cancer type-specific mechanisms for high mutation burden. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz431.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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22
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Liao N, Chen B, Zhang G, Ren C, Wang Y, Guo L, Cao L, Wen L, Li K, Jia M, Li C, Mok H, Chen X, Wei G, Lin J, Zhang Z, Hou T, Shi X, HanZhang H, Liu H. Frequency of germline mutations in women’s cancer susceptibility genes in a large cohort of Chinese breast cancer patients. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz240.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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23
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Li Y, Peng J, Hou T, Han-Zhang H, Liu H, Xiang J, Zhang L, Ma X, Huang D, Cai S. Development of a nomogram for predicting survival in microsatellite stable patients with resected colorectal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.145] [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: 11/14/2022] Open
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24
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Xue R, Tian Y, Hou T, Bao D, Chen H, Teng Q, Yang J, Li X, Wang G, Li Z, Liu Q. H9N2 influenza virus isolated from minks has enhanced virulence in mice. Transbound Emerg Dis 2018; 65:904-910. [PMID: 29333687 DOI: 10.1111/tbed.12805] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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: 10/19/2017] [Indexed: 12/26/2022]
Abstract
H9N2 is one of the major subtypes of influenza virus circulating in poultry in China, which has a wide host range from bird to mammals. Two H9N2 viruses were isolated from one mink farm in 2014. Phylogenetic analysis showed that internal genes of the H9N2 viruses have close relationship with those of H7N9 viruses. Interestingly, two H9N2 were separated in phylogenetic trees, indicating that they are introduced to this mink farm in two independent events. And further mice studies showed that one H9N2 caused obvious weight loss and 20% mortality in infected mice, while another virus did not cause any clinical sign in mice infected at the same dose. Genetic analysis indicated that the virulent H9N2 contain a natural mutation at 701N in PB2 protein, which was reported to contribute to mammalian adaptation. However, such substitution is absent in the H9N2 avirulent to mice. Circulation of H9N2 in mink may drive the virus to adapt mammals; continual surveillance of influenza virus in mink was warranted.
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Affiliation(s)
- R Xue
- College of Animal Science and Technology, Shandong Agriculture University, Taian, China
| | - Y Tian
- College of Animal Science and Technology, Shandong Agriculture University, Taian, China.,Shanghai Veterinary Research Institute, CAAS, Shanghai, China.,Key Laboratory of Animal Epidemiology and Zoonoses, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - T Hou
- Shanghai Veterinary Research Institute, CAAS, Shanghai, China
| | - D Bao
- Shanghai Veterinary Research Institute, CAAS, Shanghai, China
| | - H Chen
- Shanghai Veterinary Research Institute, CAAS, Shanghai, China
| | - Q Teng
- Shanghai Veterinary Research Institute, CAAS, Shanghai, China
| | - J Yang
- Shanghai Veterinary Research Institute, CAAS, Shanghai, China
| | - X Li
- Shanghai Veterinary Research Institute, CAAS, Shanghai, China
| | - G Wang
- Shandong Provincial Center for Animal Disease Control and Prevention, Jinan, China
| | - Z Li
- Shanghai Veterinary Research Institute, CAAS, Shanghai, China
| | - Q Liu
- Shanghai Veterinary Research Institute, CAAS, Shanghai, China
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25
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Hou T, Wang K, Xiong Y, Xiao X, Zhang S. Discrete maximum-norm stability of a linearized second-order finite difference scheme for Allen–Cahn equation. ACTA ACUST UNITED AC 2017. [DOI: 10.1134/s1995423917020082] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Hou T, Yin SH, Zhu ZA, Long J. [Clinical analysis of 384 cases of benign paroxysmal positional vertigo]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:601-606. [PMID: 29871323 DOI: 10.13201/j.issn.1001-1781.2017.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Indexed: 11/12/2022]
Abstract
Objective:To study the disease characteristics in cases with benign paroxysmal positional vertigo(BPPV).Method:The characteristics and clinical features of 384 cases with BPPV were retrospectively analyzed,and all cases were treated with repositioning maneuver.The treatment outcomes were observed and analyzed during the follow-up period. Result:①Of the 384 cases,331(86.20%) cases were PC-BPPV, 47(12.24%) cases were HC-BPPV and 3(0.78%) cases were AC-BPPV, 3(0.78%) cases were combined semicircular canal BPPV. ②All cases underwent repositioning maneuver, PC-BBPV cases first efficiency was 93.66%, long-term (six months) efficiency was 96.68%; HC-BBPV cases first efficiency was 91.49%, long-term (six months) efficiency was 95.74%;AC-BPPV cases first efficiency and long-term efficiency were 66.67%;combined semicircular canal BPPV cases first efficiency and long-term efficiency were 66.67%.③Among 331 cases with PC-BBPV, cases diagnosed duct stones accounted for 96.37%,cases diagnosed crest stones accounted for 3.63%. Among 47 cases with HC-BBPV, cases diagnosed duct stones accounted for 78.72%,cases diagnosed crest stones accounted for 21.28%.④During the follow-up of six months,the recurrence rate was 12.76%(49/384). Conclusion:①In BPPV cases of Guangxi,the ratio of male and female,age of onset and the incidence of BPPV in each semicircular canal are consistent with other literatures.Geographical and ethnic factors do not affect the above results.②Repositioning maneuver is an simple and effective treatment for cases with BPPV.③There is higher recurrence rate in cases with BPPV after repositioning maneuver.
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Affiliation(s)
- T Hou
- Department of Otorhinolaryngology-Head and Neck Surgery, the Second Affiliated Hospital of Guangxi Medical University, Nanning,530021,China
| | - S H Yin
- Department of Otorhinolaryngology-Head and Neck Surgery, the Second Affiliated Hospital of Guangxi Medical University, Nanning,530021,China
| | - Z A Zhu
- Department of Otorhinolaryngology-Head and Neck Surgery, the Second Affiliated Hospital of Guangxi Medical University, Nanning,530021,China
| | - J Long
- Department of Otorhinolaryngology-Head and Neck Surgery, the Second Affiliated Hospital of Guangxi Medical University, Nanning,530021,China
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27
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Dou C, Ding N, Xing J, Zhao C, Kang F, Hou T, Quan H, Chen Y, Dai Q, Luo F, Xu J, Dong S. Dihydroartemisinin attenuates lipopolysaccharide-induced osteoclastogenesis and bone loss via the mitochondria-dependent apoptosis pathway. Cell Death Dis 2016; 7:e2162. [PMID: 27031959 PMCID: PMC4823966 DOI: 10.1038/cddis.2016.69] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Revised: 01/27/2016] [Accepted: 03/02/2016] [Indexed: 12/19/2022]
Abstract
Dihydroartemisinin (DHA) is a widely used antimalarial drug isolated from the plant Artemisia annua. Recent studies suggested that DHA has antitumor effects utilizing its reactive oxygen species (ROS) yielding mechanism. Here, we reported that DHA is inhibitory on lipopolysaccharide (LPS)-induced osteoclast (OC) differentiation, fusion and bone-resorption activity in vitro. Intracellular ROS detection revealed that DHA could remarkably increase ROS accumulation during LPS-induced osteoclastogenesis. Moreover, cell apoptosis was also increased by DHA treatment. We found that DHA-activated caspase-3 increased Bax/Bcl-2 ratio during LPS-induced osteoclastogenesis. Meanwhile, the translocation of apoptotic inducing factor (AIF) and the release of cytochrome c from the mitochondria into the cytosol were observed, indicating that ROS-mediated mitochondrial dysfunction is crucial in DHA-induced apoptosis during LPS-induced osteoclastogenesis. In vivo study showed that DHA treatment decreased OC number, prevents bone loss, rescues bone microarchitecture and restores bone strength in LPS-induced bone-loss mouse model. Together, our findings indicate that DHA is protective against LPS-induced bone loss through apoptosis induction of osteoclasts via ROS accumulation and the mitochondria-dependent apoptosis pathway. Therefore, DHA may be considered as a new therapeutic candidate for treating inflammatory bone loss.
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Affiliation(s)
- C Dou
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China.,Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China
| | - N Ding
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - J Xing
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - C Zhao
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China
| | - F Kang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China
| | - T Hou
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - H Quan
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China
| | - Y Chen
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China
| | - Q Dai
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - F Luo
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - J Xu
- Department of Orthopedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - S Dong
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China.,China Orthopedic Regenerative Medicine Group, Chongqing 400038, China
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Vladutiu G, Chen W, Li Y, Hou T, Heffner R. Mitochondrial disease in a large cohort of statin-induced myopathy. Mitochondrion 2015. [DOI: 10.1016/j.mito.2015.07.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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29
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Wang Z, Cui Z, Li Y, Hou T, Liu X, Xi Y, Liu Y, Li H, He Q. High prevalence of erythromycin-resistant Bordetella pertussis in Xi'an, China. Clin Microbiol Infect 2014; 20:O825-30. [DOI: 10.1111/1469-0691.12671] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Revised: 05/04/2014] [Accepted: 05/04/2014] [Indexed: 11/29/2022]
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Zhang Z, Wang X, Luo F, Yang H, Hou T, Zhou Q, Dai F, He Q, Xu J. Effects of rifampicin on osteogenic differentiation and proliferation of human mesenchymal stem cells in the bone marrow. Genet Mol Res 2014; 13:6398-410. [PMID: 25158258 DOI: 10.4238/2014.august.25.3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
This study was designed to investigate the effect of different concentrations of rifampicin on osteogenic differentiation and proliferation of mesenchymal stem cells (MSCs) in human bone marrow. Rifampicin treatment at 0, 4, 8, 16, 32, 64, and 128 mg/mL was applied throughout the whole process, from stromal cells purified from human bone marrow to differentiated bone cells. The effect of rifampicin on MSC proliferation was determined using the MTT assay. The effect of rifampicin on the expressions of type I collagen (COL1A1), osteopontin/bone Gla protein (OPN/BGP), and alkaline phosphatase (ALP) in human osteoblast cells were determined by real-time polymerase chain reaction, and the expressions of COL1A1, OPN/BGP, and the runt-related transcription factor (RUNX2) were determined by Western blot. Results showed that the proliferation of MSCs was significantly inhibited when the rifampicin concentration exceeded 32 mg/mL. In addition, increased rifampicin concentrations inhibited the formation of calcium nodules, OPN/BGP, and COL1A1 in osteoblasts after 28 days of induction. The RNA expressions of OPN/BGP, COL1A1, and ALP were significantly downregulated compared to those of the control group in osteoblasts after induction. The protein expressions of RUNX2, COL1A1, and OPN/BGP were also significantly downregulated compared to those of the control group after induction. In conclusion, rifampicin at exorbitant concentration exerts adverse effects on the proliferation of MSCs in human bone marrow and the differentiation of osteoblasts.
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Affiliation(s)
- Z Zhang
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - X Wang
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - F Luo
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - H Yang
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - T Hou
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - Q Zhou
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - F Dai
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - Q He
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - J Xu
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
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Zhu J, Wang M, Cao B, Hou T, Mao X. Targeting the Phosphatidylinositol 3-Kinase/AKT Pathway for the Treatment of Multiple Myeloma. Curr Med Chem 2014; 21:3173-87. [DOI: 10.2174/0929867321666140601204513] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 03/02/2014] [Accepted: 05/26/2014] [Indexed: 11/22/2022]
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32
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Li C, Zheng J, Guo C, Ling J, Yu H, Zhang J, Tai B, Hou T, Tang G, Sun W, Wang S. An introduction to clinical practice guideline for Chinese undergraduates in stomatology. Eur J Dent Educ 2014; 18:110-114. [PMID: 24118682 DOI: 10.1111/eje.12064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/30/2013] [Indexed: 06/02/2023]
Abstract
The Society of Dental Education, Chinese Stomatological Association has formulated the Standards of Clinical Practice for Chinese Undergraduate Students Majoring in Stomatology, on the basis of extensively soliciting the views of experts in various fields. The aim of this standard is to guide clinical teaching and improve teaching quality in schools of stomatology in China. The standards include eight parts: the standard of clinical practice for oral and maxillofacial surgery, for cariology and endodontics, for periodontics, for the oral mucosa diseases, for preventive dentistry, for pedodontology, for prosthodontics and for oral imageology. Each part includes introduction to subjects, the clinical practice time period, the purpose and requirements of practice, the disease types of practice and items of clinical operation, the index of the lowest workload of practice and the major methods of assessment. These standards are not only the basic requirements and guiding principles for clinical teaching, but also the major criteria for assessing the clinical teaching quality of stomatological colleges/schools of China.
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Affiliation(s)
- C Li
- Society of Dental Education, Chinese Stomatological Association, Peking University School of Stomatology, Beijing, China; Society of Dental Education, Chinese Stomatological Association, Capital Medical University School of Stomatology, Beijing, China
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Hou T, Ou J, Zhao X, Huang X, Huang Y, Zhang Y. MicroRNA-196a promotes cervical cancer proliferation through the regulation of FOXO1 and p27Kip1. Br J Cancer 2014; 110:1260-8. [PMID: 24423924 PMCID: PMC3950858 DOI: 10.1038/bjc.2013.829] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 10/28/2013] [Accepted: 12/17/2013] [Indexed: 11/26/2022] Open
Abstract
Background: The phosphoinositide 3-kinase (PI3K)/Akt signalling pathway appears to be a key regulator in cervical carcinogenesis. However, the downstream regulatory mechanism of PI3K/Akt signalling remains largely unknown. Methods: The expression of miR-196a in cervical cancer cell lines and cervical cancer tissues was examined using real-time PCR. The effects of miR-196a on PI3K/Akt signalling and cellular proliferation were evaluated by bromodeoxyuridine labelling, 3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazoliumbromide, colony formation assays and luciferase assays. Results: The expression level of miR-196a was markedly increased in cervical cancer tissues and cell lines compared with normal cervical tissue and normal cervical squamous cells. Upregulation of miR-196a was correlated with advanced tumour stage and poor overall and recurrence-free survival in cervical cancer patients. Upregulation of miR-196a enhanced G1/S-phase transition and the proliferative ability of cervical cancer cells, whereas suppression of miR-196a had the opposite effect. Using bioinformatics and biological approaches, we showed that FOXO1 and p27Kip1, two key effectors of PI3K/Akt signalling, were direct targets of miR-196a. Conclusions: Our findings suggest that miR-196a has an important role in promoting human cervical cancer cell proliferation and may represent a novel therapeutic target of microRNA-mediated suppression of cell proliferation in cervical cancer.
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Affiliation(s)
- T Hou
- State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, GD 510060, China
| | - J Ou
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, GD 510080, China
| | - X Zhao
- State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, GD 510060, China
| | - X Huang
- State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, GD 510060, China
| | - Y Huang
- State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, GD 510060, China
| | - Y Zhang
- State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, GD 510060, China
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34
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Gan F, Cao B, Wu D, Chen Z, Hou T, Mao X. Exploring Old Drugs for the Treatment of Hematological Malignancies. Curr Med Chem 2011; 18:1509-14. [DOI: 10.2174/092986711795328427] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Accepted: 03/06/2011] [Indexed: 11/22/2022]
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36
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Hou T, Zhang JZ, Kong LJ, Zhang XE, Hu P, Zhang DM, Li N. Morphologies of fibroblast cells cultured on surfaces of PHB films implanted by hydroxyl ions. J Biomater Sci Polym Ed 2006; 17:735-46. [PMID: 16909942 DOI: 10.1163/156856206777656508] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Polyhydroxybutyrate (PHB) films were implanted with 40 keV hydroxyl ions with fluences ranging from 1 x 10(12) to 1 x 10(15) ions/cm2, respectively. The as-implanted PHB films were characterized by scanning electron microscopy (SEM), electron spectroscopy for chemical analysis (ESCA) and water contact angle measurements. The surface structures and properties of the as-implanted PHB films were closely related with hydroxyl ion fluence. They were further investigated by inoculating 3T6 fibroblasts cells on their surfaces. Morphologies of the 3T6 fibroblast cells cultured on surfaces of the as-implanted PHB films were observed by SEM. Characterization of the cultural 3T6 cells was analyzed qualitatively. The preliminary experimental results reveal that the bioactivity of the PHB films modified by hydroxyl ion implantation was improved at different levels, and the fluence of 1 x 10(13) ions/cm2 is optimal for PHB film.
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Affiliation(s)
- T Hou
- Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
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Hou T, Chen Z, Hwang DW, Zhong JH, Hwang LP. Intermolecular double-quantum coherence MR microimaging of pig tail with unique image contrast. Magn Reson Imaging 2004; 22:543-50. [PMID: 15120174 DOI: 10.1016/j.mri.2004.01.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2003] [Accepted: 01/28/2004] [Indexed: 11/24/2022]
Abstract
Image contrast in intermolecular double-quantum coherence (iDQC) imaging of a pig tail was investigated on a 7.05-T microimaging scanner. In addition to TR (repetition time) and TE (echo time), the time interval tau between radio frequency pulses during iDQC evolution and the areas under the iDQC-encode gradients in the iDQC imaging sequence were also used to manipulate image contrast. When suitable imaging parameters were selected, images with unique contrast, such as those with certain regions of the sample highlighted, were obtained without using contrast agents. The effects of iDQC-encode gradient on image contrast were studied quantitatively, and the unique contrast imposed by the related diffusion weighting was also shown. Experimental results demonstrated that the iDQC images have contrast fundamentally different from the conventional single-quantum coherence images.
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Affiliation(s)
- T Hou
- Department of Chemistry, National Taiwan University, and Institute of Atomic and Molecular Science, Academia Sinica, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan
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38
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Abstract
We present a comprehensive molecular simulation program package, the Peking University Drug Design System (PKUDDS), which runs on personal computers. PKUDDS has been developed mainly for computer-aided drug design using the methods of two-dimensional quantitative structure-activity relationships, three-dimensional quantitative structure-activity relationships, molecular docking, and database screening. This study presents an overview of its functionality, especially of methods developed in our group. PKUDDS uses genetic algorithms in molecular docking, conformational analysis, and quantitative structure-activity relationships as the most useful optimization technique. A user-friendly graphical interface provides easy access to many functions of PKUDDS. We report some examples of our considerable research using PKUDDS.
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Affiliation(s)
- T Hou
- Department of Chemistry and Molecular Engineering, Peking University, Beijing People's Republic of China
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39
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Hou T, Smith J, MacNamara E, MacNaughton M, Raftery D. Analysis of multiple samples using multiplex sample NMR: selective excitation and chemical shift imaging approaches. Anal Chem 2001; 73:2541-6. [PMID: 11403297 DOI: 10.1021/ac0100751] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two improved approaches for the rapid analysis of multiple samples using multiplex sample NMR are described. In the first approach, frequency-selective 90 degrees radio frequency pulses and large pulsed field gradients are applied to excite and detect multiple samples in rapid succession. This method is advantageous for samples with relatively long longitudinal (T1) relaxation times. In the second approach, chemical shift imaging is applied to acquire both the spectral and spatial information of multiple samples simultaneously. Chemical shift imaging is more time-consuming than selective excitation; however, it is advantageous for detecting samples with short T1's and for signal averaging. Both approaches demonstrate the potential of multiplex sample NMR for carrying out high-throughput NMR detection.
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Affiliation(s)
- T Hou
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907-1393, USA
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40
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Gao P, Hou T, Gao R, Cui Q, Liu S. Activity of the botanical aphicides 1,5-diphenyl-1-pentanone and 1,5-diphenyl-2-penten-1-one on two species of Aphididnae. Pest Manag Sci 2001; 57:307-310. [PMID: 11455662 DOI: 10.1002/ps.297] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
1,5-Diphenyl-1-pentanone (A) and 1,5-diphenyl-2-penten-1-one (B) are natural products extracted for the first time from Stellera chamaejasme. Laboratory bioassay showed that the two products have strong contact activity and very good anti-feedant activity against Aphis gossypii and Schizaphis graminum. Both products showed dose-dependent relationships for both forms of activity against the two aphids, the contact activity of B being about twice that of A. Both products were inferior to methomyl in contact activity but superior in anti-feedant activity against the two aphids. This is the first report of aphicidal activity in these two compounds, which may represent a new class of aphicide.
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Affiliation(s)
- P Gao
- State Specialized Laboratory of Biocontrol Engineering in Mouse, Insect Pests and Plant Diseases of Grasslands, Sichuan University, Chengdu 610064, People's Republic of China
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Abstract
Polymerization of metallothioneins is one of the usually encountered puzzles during the research process of metallothioneins' structure and function. Our work focuses on the cysteine independently occurred polymerization from metallothioneins monomers in different milieus, while it leaves out the aggregation caused by the oxidation of cysteine, because the latter circumstance is the result of purification lapsus. After the purification of metallothioneins monomers, a dynamic light-scattering technique is used to detect the polymerized states of rabbit liver metallothionein I and II in different buffers, which is the first systematical detection of polymerized states of metallothioneins in solutions. The effects of different compositions of each buffer are discussed in details. Steric complementarity, hydrophobic, and electrostatic interaction characteristics are studied, following the modeling of monomers and relevant polymers of rat metallothionein II, rabbit liver metallothionein I and II. These theoretical calculations are the first complete computer simulations on different factors affecting metallothioneins' polymerization. A molecular recognition mechanism of metallothioneins' polymerization in solutions is proposed on the bases of experimental results and theoretical calculations. Preliminary X-ray studies of two crystal forms of rabbit liver metallothionein II are compared with the crystal structure of rat metallothionein II, and the polymerized states in crystal packing are discussed with the knowledge of polymerization of metallothioneins in solutions. The hypothesis, which is consistent with theoretical calculations and experimental results, is expected to construct a connection between the biochemical characteristics and physiological functions of metallothioneins, and this research may give some enlightenment to the topics of protein polymerizations.
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Affiliation(s)
- T Hou
- College of Chemistry and Molecular Engineering, Peking University, Beijing, People's Republic of China
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42
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Zhang Q, Zhao J, Wang Q, Li M, Hou T, Li Z, Zhang L. [Adenosine in treatment of rats with spinal cord injury]. Zhonghua Wai Ke Za Zhi 2000; 38:219-22. [PMID: 11832034] [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 observe the changes of endogenous extracellular adenosine after spinal cord injury (SCI) to rats and the effect of exogenous adenosine on extracellular calcium after SCI and post-injury neurological function. METHODS A ventral compression injury model of T13 spinal cord was used, and the extracellular fluids were collected consecutively every 20 minutes after injury by using microdialysis. Adenosine in the samples was analyzed using high-pressure liquid chromatography (HPLC) with u.v. detection. The rats received different doses of 2-chloroadenosine (2-CADO), a nonspecific agonist of adenosine receptors, by intrathecal injection 15 minutes before injury. The extracellular fluid was collected every 10 minutes immediately after injury and the calcium was measured using atomic absorption spectrophotometer. Neurological function score, inclined plane angle, and histology were observed 24 hours after injury. RESULTS A significant increase of adenosine was found immediately after spinal cord injury. The concentration of adenosine peaked at one hour after injury and dropped down to the basal level. There was a positive relation between the increase of adenosine and the severity of SCI. High dose of 2-CADO can significantly significantly inhibit the decrease of extracellular calcium and improve the neurological function of injured rats. CONCLUSIONS Adenosine could involve the pathological process of secondary spinal cord injury and might play a protective role in SCI.
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Affiliation(s)
- Q Zhang
- Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
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43
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Abstract
A genetic algorithm (GA) combined with a tabu search (TA) has been applied as a minimization method to rake the appropriate associated sites for some biomolecular systems. In our docking procedure, surface complementarity and energetic complementarity of a ligand with its receptor have been considered separately in a two-stage docking method. The first stage was to find a set of potential associated sites mainly based on surface complementarity using a genetic algorithm combined with a tabu search. This step corresponds with the process of finding the potential binding sites where pharmacophores will bind. In the second stage, several hundreds of GA minimization steps were performed for each associated site derived from the first stage mainly based on the energetic complementarity. After calculations for both of the two stages, we can offer several solutions of associated sites for every complex. In this paper, seven biomolecular systems, including five bound complexes and two unbound complexes, were chosen from the Protein Data Bank (PDB) to test our method. The calculated results were very encouraging-the hybrid minimization algorithm successfully reaches the correct solutions near the best binded modes for these protein complexes. The docking results not only predict the bound complexes very well, but also get a relatively accurate complexed conformation for unbound systems. For the five bound complexes, the results show that surface complementarity is enough to find the precise binding modes, the top solution from the tabu list generally corresponds to the correct binding mode. For the two unbound complexes, due to the conformational changes upon binding, it seems more difficult to get their correct binding conformations. The predicted results show that the correct binding mode also corresponds to a relatively large surface complementarity score. In these two test cases, the correct solution can be found in the top several solutions from the tabu list. For unbound complexes, the interaction energy from energetic complementarity is very important, it can be used to filter these solutions from the surface complementarity. After the evaluation of the energetic complementarity, the conformations and orientations close to the crystallographically determined structures are resolved. In most cases, the smallest root mean square distance (r.m.s.d.) from the GA combined with TA solutions is in a relatively small region. Our program of automatic docking is really a universal one among the procedures used for the theoretical study of molecular recognition.
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Affiliation(s)
- T Hou
- Department of Chemistry, Peking University Jiuyuan Molecular Design Laboratory and Department of Technical Physics, Peking University, Beijing 100871, China
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Wang Q, Hou T, Zhang C, Nian S, Wu Y, Yang X, Gu X. [Long-term outcome of selective posterior rhizotomy for spastic cerebral palsy]. Zhonghua Wai Ke Za Zhi 1998; 36:674-6. [PMID: 11825496] [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 investigate the long term outcome and complication of selective posterior rhizotomy for spastic cerebral palsy. METHOD 26 patients with cerebral palsy who had received SPR were followed up for four years. RESULT In the 9 patients who could walk and stand up from squatting position independently, 7 could stand steadily on one foot after operation. In the 12 who patients could walk and stand up from squatting position dependently, 7 could walk independently in the room after operation. In 5 patients couldn't walk and stand up from squatting position, 3 patients could walk dependently in the room after operation. Complications occurred in 3 patients. CONCLUSION Selective posterior rhizotomy is effective in the treatment of spastic cerebral palsy. Strictly selecting candidates for the operation and good rehabilitation training before and after operation should be emphasized for good results.
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Affiliation(s)
- Q Wang
- Department of Orthopaedics, Changhai Hospital, Second Military Medical University, Shanghai 200433
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45
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Xiao J, Zhao D, Hou T, Wu K, Zeng H. Synergetic protective effects of combined blockade by two kinds of autolesion mediator receptor on neurological function after cervical cord injury. Chin Med J (Engl) 1998; 111:443-6. [PMID: 10374355] [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: 02/12/2023] Open
Abstract
OBJECTIVE To investigate the effects of combined blockade by platelet activating factor (PAF) receptor antagonist BN52021 in combination with opiate receptor antagonist naloxone on neurological function and neurological tissue damage after cervical cord injury. METHODS Spinal cord contusion at C6 segment was made with Allen method in cats, which were randomly divided into four groups: saline control group; BN52021 group; naloxone group; and combined treatment group with BN52021 and naloxone. Alteration of cervical cord blood flow, blood barrier permeability of the spinal cord, cervical cord tissue pathology and neurological functional scores were studied after experimental cervical cord injury. RESULTS The animals treated with BN52021 or naloxone had significantly better functional scores than saline controls 6 weeks after injury (P < 0.05). Moreover, the combined treatment showed significantly better neurologic recovery than either naloxone or BN52021 treated animals (P < 0.05). The other indexes in combined treatment animals were also superior to those in naloxone or BN52021 treated animals. CONCLUSIONS Combined blockade by two kinds of autolesion mediator receptor can more effectively inhibit secondary damage production and development after cervical cord injury and improve neurologic function.
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Affiliation(s)
- J Xiao
- Department of Orthopaedics, Changzheng Hospital, Second Military Medical College University, Shanghai, China
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46
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Dai L, Jia L, Ni B, Yuan W, Liu H, Hou T, Zhao D, Xu Y. Diagnosis and treatment of acute central cervical cord injury. Chin Med J (Engl) 1998; 111:351-3. [PMID: 10374402] [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: 02/12/2023] Open
Abstract
OBJECTIVE To clarify the diagnosis and management of acute central cervical cord injury. METHODS Eighty-nine patients with acute cervical central cord injury were retrospectively reviewed. Sixty-three patients were treated conservatively and 26 were treated surgically. There were two acute deaths. Eighty-seven patients were followed up for 3 months to 15 years. RESULTS Their average neurological score (ASIA) was increased from 41.7 at admission to 83.1 at follow-up. CONCLUSIONS Acute central cervical cord injury should be differentiated from complete spinal cord injury, cervical myelopathy, cruciate paralysis and C8 nerve root injury. When compression of nerve tissue or cervical instability is identified, operative intervention should be indicated. The prognosis is less optimistic in the patients with severe primary injury and at old age.
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Affiliation(s)
- L Dai
- Department of Orthopaedics, Changzheng Hospital, Shanghai, China
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47
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Zhang W, Yang Z, Zhu W, Hou T, Liu S. [Isolation and characterization of a insecticidal protein from Pseudomonas pseudoalcaligenes]. Wei Sheng Wu Xue Bao 1998; 38:57-62. [PMID: 12549390] [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: 02/28/2023]
Abstract
A insecticidal protein was purified by gel-filtration chromatography on Sephadex G-100 and anion-exchange chromatography on DEAE-Sephadex A-50 from the suspension of Pseudomonas pseudoalcaligenes culture. Certain biophysical and biochemical properties were also studied. The molecular weight of the subunit of the insecticidal protein is 25,100 and pI is 5.16. Amino acid composition analysis showed that it is an acidic protein.
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Affiliation(s)
- W Zhang
- Natoinal Laboratory for Grassland Biological Control of Sichuan University, Chengdu 610064
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48
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Xiao J, Fu Q, Hou T, Li Y, Zhao D. [The relationship between alteration of mitochondrial enzyme activities and mitochondrial function after cervical cord injury]. Zhongguo Ying Yong Sheng Li Xue Za Zhi 1997; 13:326-8. [PMID: 10322962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
To investigate the relationship between mitochondrial enzyme activities and mitochondrial function after cervical cord injury, cervical cord model was prepared using Allen method in cats. Changes in mitochondrial Na+, K(+)-ATPase, Ca2+, Mg(2+)-ATPase, superoxide dismutase (SOD) activities, contents of malondialdehyde (MDA) and mitochondrial function in cervical cord were observed by different biochemical methods. The results showed that mitochondrial Na+, K(+)-ATPase, CA2+, Mg(2+)-ATPase, SOD activities decreased; mitichondral respiratory control rate (RCR), P/O ratio and oxidative phosphorylation rate (OPR) were also depressed is compared with control group (P < 0.05), but MDA level significantly increased compared to control group (P < 0.01). The results demonstrate that there is close correlation, between mitochondrial ATPase. SOD activities and mitochondral function, suggesting that mitochondrial pathophysiological alteration plays important roles in the secondary damage after cervical cord injury.
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Affiliation(s)
- J Xiao
- ChangZheng Hospital, Second Military Medical University, Shanghai
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49
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Zhang J, Hou T, Zhao D. [Changes of NGF in injured spinal cord following treatment with a single large dose of methylprednisolone sodium succinate]. Zhonghua Wai Ke Za Zhi 1995; 33:727-30. [PMID: 8762551] [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: 02/02/2023]
Abstract
Nerve growth factor (NGF) was detected by ABC-ELISA in rat normal spinal cord, spinal cord with mild contusion of 25gcm, and that with mild contusion plus a single intramuscular injection of large dose of methylprednisolone sodium succinate (MPSS) (80 mg/kg). The mean preinjury NGF level in spinal cord was 10.2 +/- 2.8ng/g. Following injury, NGF level in spinal cord began to increase progressively. NGF level in spinal cord without treatment was attenuated to 30.32 +/- 0.32, 89.51 +/- 2.14, 66.02 +/- 1.51, 50.32 +/- 1.23 and 46.23 +/- 1.42ng/g at 4, 7, 14, 21 and 28 days respectively, while in cord spinal with MPSS treatment it was 121.98 +/- 4.05, 119.56 +/- 1.45, 80.39 +/- 1.50, 68.31 +/- 0.77 and 59.86 +/- 0.97 ng/g at 4, 7, 14, 21 and 28 days, respectively. This result suggests that a single large dose of MPSS enhances NGF level in injured spinal cord with a peak at day 4. The implication of this article is that the changes of NGF level in spinal cord are relevant to spinal cord self-recovery.
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Affiliation(s)
- J Zhang
- Navy 411 Hospital of People's Liberation Army, Shanghai
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Liu Z, Hou T, Shen Q, Liao W, Xu H. Osteomyelitis of sacral spine caused by aspergillus versicolor with neurologic deficits. Chin Med J (Engl) 1995; 108:472-5. [PMID: 7555262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Affiliation(s)
- Z Liu
- Department of Orthopaedics, Changzheng Hospital, Shanghai
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