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Impaired pericyte-Müller glia interaction via PDGFRβsuppression aggravates photoreceptor loss in a rodent model of light-induced retinal injury

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International Journal of Ophthalmology(English edition) 2024年第10期17卷 1800-1808页

作者： Wei Xu Li-jin Cui Xiao-Ying Yang Xiao-yuan Cui Jian Guo Guo-Xing Xu Department of Ophthalmology the First Affiliated Hospital of Fujian Medical UniversityFuzhou 350001Fujian ProvinceChina Department of Ophthalmology National Regional Medical CenterBinhai Campus of the First Affiliated Hospital of Fujian Medical UniversityFuzhou 350212Fujian ProvinceChina Fujian Institute of Ophthalmology Fuzhou 350001Fujian ProvinceChina

AIM:To investigate the involvement of pericyte-Müller glia interaction in retinal damage repair and assess the influence of suppressing the platelet-derived growth factor receptorβ(PDGFRβ)signaling pathway in retinal pericytes on photoreceptor loss and Müller glial ***:Sprague-Dawley rats were exposed to intense light to induce retinal *** antibody against PDGFRβwere deployed to block the signaling pathway in retinal pericytes through intravitreal *** histology and Müller glial reaction were assessed following light *** vitro,normal and PDGFRβ-blocked retinal pericytes were cocultured with Müller cell line(rMC-1)to examine morphological and protein expression changes upon supplementation with light-injured supernatants of homogenized retinas(SHRs).RESULTS:PDGFRβblockage 24h prior to intense light exposure resulted in a significant exacerbation of photoreceptor *** upregulation of GFAP and p-STAT3,observed after intense light exposure,was significantly inhibited in the PDGFRβblockage *** ther upregulation of cytokines monocyte chemoattractant protein 1(MCP-1)and interleukin-1β(IL-1β)was also observed following PDGFRβ*** the in vitro coculture system,the addition of light-injured SHRs induced pericyte deformation and upregulation of proliferating cell nuclear antigen(PCNA)expression,while Müller cells exhibited neuron-like morphology and expressed ***,PDGFRβblockage in retinal pericytes abolished these cellular responses to light-induced damage,consistent with the in vivo PDGFRβblockage ***:Pericyte-Müller glia interaction plays a potential role in the endogenous repair process of retinal *** of this interaction exacerbates photoreceptor degeneration in light-induced retinal injury.

关键词： pericyte Müller glia light-induced retinal injury platelet-derived growth factor receptorβ signal pathway

Effect of SARS-CoV-2 infection on semen parameters in sperm bank volunteers with normal sperm concentration

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Asian Journal of Andrology 2024年第3期26卷 328-332页

作者： Li Wang Wen-Kai Han Xiao-Hui Song Qi-Lin Zhang An-Quan Guan yuan Gao jin-Long Ma Center for Reproductive Medicine Shandong UniversityJinan 250001China State Key Laboratory of Reproductive Medicine and Offspring Health ShandongUniversityJinan 250001China Key Laboratory of Reproductive Endocrinology of Ministry of Education Shandong UniversityJinan 250001China Shandong KeyLaboratory of Reproductive Medicine Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan 250001China Shandong Provincial Clinical Research Center for Reproductive Health Jinan 250001China Shandong Technology Innovation Center for Reproductive Health Jinan 250001China NationalResearch Center for Assisted Reproductive Technology and Reproductive Genetics Shandong UniversityJinan 250001China Research Unit of Gametogenesis andHealth of ART-Offspring Chinese Academy of Medical Sciences(No.2021RU001)Jinan 250001China

In this study,we aimed to assess the effect of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection on *** study comprised 110 sperm volunteers who self-reported SARS-CoV-2 infection from the Human Sperm Bank ofthe Center for Reproductive Medicine,Shandong University(jinan,China).The volunteers had normal sperm concentration *** volunteer provided semen samples before and after *** selected 90 days after infection as the cutoff *** parameters within 90 days after infection of 109 volunteers(group A)were compared with semen parameters before ***,semen parameters on or after 90 days after infection of 36 volunteers(group B)were compared with semen parameters ***,based on whether the volunteers had completed the three-dose SARS-CoV-2 vaccination booster,volunteersin group A and B were further divided into two subgroups *** parameters were compared before and after infection ineach *** results showed that in this cohort population,the semen quality in volunteers with normal sperm concentrationsbefore infection decreased after SARS-CoV-2 infection within 90 days,while the semen quality returned to preinfection levels after *** completion of a three-dose SARS-CoV-2 vaccination booster may exert a protective effect on semen quality after infection.

关键词： SARS-CoV-2 SARS-CoV-2 vaccination semen quality sperm donation sperm parameters

Salidroside Ameliorates Lung Injury Induced by PM_(2.5) by Regulating SIRT1-PGC-1αin Mice

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Biomedical and Environmental Sciences 2024年第4期37卷 367-376页

作者： LI Xiao Hong LIU Yu Mei SHAN Hui TAN jin Feng ZHOU Jian SONG yuan jin LI Si Qi LIU Chen XU Dong Qun YU Li LI Wan Wei School of Public Health Shandong Second Medical UniversityWeifang 261053ShandongChina Key Laboratory of Health Inspection and Quarantine Weifang 261053ShandongChina Weifang Environmental Monitoring Station Weifang 261042ShandongChina Department of Orthopedics The 80th Army Hospital of PLAWeifang 261000ShandongChina Environment and Health Related Product Safety Institute of Chinese Center for Disease Control and Prevention Beijing 100021China School of Basic Medicine Shandong Second Medical UniversityWeifang 261053ShandongChina

Objective This study aimed to clarify the intervention effect of salidroside(SAL)on lung injury caused by PM_(2.5) in mice and illuminate the function of SIRT1-PGC-1ɑ*** Specific pathogen-free(SPF)grade male C57BL/6 mice were randomly assigned to the following groups:control group,SAL group,PM_(2.5) group,SAL+PM_(2.5) *** the first day,SAL was given by gavage,and on the second day,PM_(2.5) suspension was given by intratracheal *** whole experiment consist of a total of 10 cycles,lasting 20 *** the end of treatment,blood samples and lung tissues were collected and *** of pathological changes in lung tissue using inverted microscopy and transmission electron *** expression of inflammatory,antioxidants,apoptosis,and SIRT1-PGC-1ɑproteins were detected by Western *** Exposure to PM_(2.5) leads to obvious morphological and pathologica changes in the lung of ***_(2.5) caused a decline in levels of antioxidant-related enzymes and protein expressions of HO-1,Nrf2,SOD2,SIRT1 and PGC-1ɑ,and an increase in the protein expressions of IL-6,IL-1β,Bax,caspase-9 and cleaved ***,SAL reversed the aforementioned changes caused by PM_(2.5) by activating the SIRT1-PGC-1α *** SAL can activate SIRT1-PGC-1ɑ to ameliorate PM2.5-induced lung injury.

关键词： PM_(2.5) Salidroside Oxidative stress Inflammation Apoptosis SIRT1-PGC-1α

Indirubin alleviates retinal neurodegeneration through the regulation of PI3K/AKT signaling

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Journal of Biomedical Research 2024年第3期38卷 256-268页

作者： Huan Li Huiying Zhang Lushu Chen Yaming Shen yuan Cao Xiumiao Li jin Yao Department of Ophthalmology the Affiliated Eye Hospital of Nanjing Medical UniversityNanjingJiangsu 210029China Department of Ophthalmology the Fourth School of Clinical MedicineNanjing Medical UniversityNanjingJiangsu 210029China

Retinal neurodegenerative disease is a leading cause of blindness among the elderly in developed countries,including glaucoma,diabetic retinopathy,traumatic optic neuropathy and optic neuritis,*** current clinical treatment is not very *** investigated indirubin,one of the main bioactive components of the traditional Chinese medicine Danggui Longhui Pill,in the present study for its role in retinal *** exhibited no detectable tissue toxicity in vivo or cytotoxicity in ***,indirubin improved visual function and ameliorated retinal neurodegeneration in mice after optic nerve crush injury in ***,indirubin reduced the apoptosis of retinal ganglion cells induced by oxidative stress in *** addition,indirubin significantly suppressed the increased production of intracellular reactive oxygen species and the decreased activity of superoxide dismutase induced by oxidative ***,indirubin played a neuroprotective role by regulating the PI3K/AKT/BAD/BCL-2 *** conclusion,indirubin protected retinal ganglion cells from oxidative damage and alleviated retinal neurodegeneration induced by optic nerve crush *** present study provides a potential therapeutic medicine for retinal neurodegenerative diseases.

关键词： retinal neurodegenerative disease oxidative stress PI3K/AKT retinal ganglion cell apoptosis

The Uptake and Distribution Evidence of Nano-and Microplastics in vivo after a Single High Dose of Oral Exposure

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Biomedical and Environmental Sciences 2024年第1期37卷 31-41页

作者： HONG Tao SUN Wei DENG yuan LYU Jian Da jin Cui Hong BAI Ying Long NA Jun ZHANG Rui GAO yuan PAN Guo Wei YANG Zuo Sen YAN Ling Jun Research Center for Universal Health School of Public HealthChina Medical UniversityShenyang 110122LiaoningChina Department of Pain Management Shengjing Hospital of China Medical UniversityShenyang 110004LiaoningChina Department of Toxicology School of Public HealthChina Medical UniversityShenyang 110122LiaoningChina Department of Maternal and Child Health School of Public HealthChina Medical UniversityShenyang 110122LiaoningChina Institute of Preventive Medicine China Medical UniversityShenyang 110122LiaoningChina Institute of Chronic Diseases Liaoning Provincial Center for Disease Control and PreventionShenyang 110000LiaoningChina

Objective Tissue uptake and distribution of nano-/microplastics was studied at a single high dose by gavage in *** Fluorescent microspheres(100 nm,3μm,and 10μm)were given once at a dose of 200 mg/(kg∙body weight).The fluorescence intensity(FI)in observed organs was measured using the IVIS Spectrum at 0.5,1,2,and 4 h after *** was performed to corroborate these *** In the 100 nm group,the FI of the stomach and small intestine were highest at 0.5 h,and the FI of the large intestine,excrement,lung,kidney,liver,and skeletal muscles were highest at 4 h compared with the control group(P<0.05).In the 3μm group,the FI only increased in the lung at 2 h(P<0.05).In the 10μm group,the FI increased in the large intestine and excrement at 2 h,and in the kidney at 4 h(P<0.05).The presence of nano-/microplastics in tissues was further verified by *** peak time of nanoplastic absorption in blood was *** Nanoplastics translocated rapidly to observed organs/tissues through blood circulation;however,only small amounts of MPs could penetrate the organs.

关键词： Microplastics Nanoplastics IVIS Spectrum small-animal imaging system Tissue distribution Blood

Transverse emittance measurement for the heavy ion medical machine cyclotron

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Nuclear Science and Techniques 2019年第12期30卷 103-110页

作者： Yong-Chun Feng Min Li Rui-Shi Mao Bing Wang Sheng-Peng Li Wei-Long Li Wei-Nian Ma Xin-Cai Kang jin-Quan Zhang Peng Li Tie-Cheng Zhao Zhi-Guo Xu you-jin yuan Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Lanzhou Ke jin tai ji Corporation LTDLanzhou 730000China Lanzhou University of Technology Lanzhou 730050China

The transverse emittance of the extracted beam from the heavy ion medical machine cyclotron is measured and then optimized for injection into the *** the purposes of cross-validation,three methods,i.e.,slit-grid,Q-scan,and 3-grid,are used to measure the *** the slit-grid technique,an automatic selection of the region of interest is adopted to isolate the major noise from the beam phase space,which is an improvement over the traditional *** iterating over the contour level,an unbiased measurement of the emittance can be *** improvement in the thin lens technique is implemented in the Q-scan *** results of these measurements are presented.

关键词： Heavy ion medical machine Transverse emittance Slit-grid

Enhancement of polymyxin B1 production by an artificial microbial consortium of Paenibacillus polymyxa and recombinant Corynebacterium glutamicum producing precursor amino acids

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Synthetic and Systems Biotechnology 2024年第1期9卷 176-185页

作者： Hui-Zhong Sun Si-Yu Wei Qiu-Man Xu Wei Shang Qing Li jing-Sheng Cheng Ying-jin yuan Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering(Ministry of Education) School of Chemical Engineering and TechnologyTianjin UniversityYaguan Road 135Jinnan DistrictTianjin300350PR China Tianjin Key Laboratory of Animal and Plant Resistance College of Life ScienceTianjin Normal UniversityBinshuixi Road 393Xiqing DistrictTianjin300387PR China Department of Pharmaceutical School of Chemical Engineering and TechnologyTianjin UniversityYaguan Road 135Jinnan DistrictTianjin300350PR China

Polymyxin B,produced by Paenibacillus polymyxa,is used as the last line of defense *** this study,exogenous mixture of precursor amino acids increased the level and proportion of polymyxin B1 in the total of polymyxin B analogs of *** CJX518-AC(PPAC)from 0.15 g/L and 61.8%to 0.33 g/L and 79.9%,*** co-culture of strain PPAC and recombinant Corynebacterium glutamicum-leu01,which produces high levels of threonine,leucine,and isoleucine,increased polymyxin B1 production to 0.64 g/*** strains PPAC and ***-leu01 simultaneously inoculated into an optimized medium with 20 g/L peptone,polymyxin B1 production was increased to 0.97 g/***,the polymyxin B1 production in the co-culture of strains PPAC and ***-leu01 increased to 2.21 g/L after optimized inoculation ratios and fermentation medium with 60 g/L *** study provides a new strategy to improve polymyxin B1 production.

关键词： Polymyxin Co-culture Paenibacillus polymyxa Corynebacterium glutamicum Medium optimization Metabolic precursors

NLRP3 activation in macrophages promotes acute intestinal injury in neonatal necrotizing enterocolitis

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World Journal of Pediatrics 2024年第2期20卷 153-164页

作者： Bo Shi Cheng-Jie Lyu Zhen-Kai Le Hao-Sen Ji Yi Xiao yuan-yuan Zhang Shou-Jiang Huang Lin-Jun Yu Qiang Shu jin-Fa Tou Deng-Ming Lai Department of Neonatal Surgery Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052China Department of Pulmonology Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052China Department of Thoracic and Cardiovascular Surgery Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052China

Background Macrophages are involved in various immune inflammatory disease *** study aimed to investigate the role and mechanism of macrophages in regulating acute intestinal injury in neonatal necrotizing enterocolitis(NEC).Methods CD68,nucleotide-binding oligomerization domain,leucine-rich repeat,and pyrin domain-containing 3(NLRP3),cysteine aspartate-specific protease-1(caspase-1),and interleukin-1β(IL-1β)in paraffin sections of intestinal tissues from NEC and control patients were detected with immunohistochemistry,immunofluorescence,and western *** pet milk,hypoxia and cold stimulation were used to establish a mouse(wild type and Nlrp3^(-/-))model of *** mouse macrophage(RAW 264.7)and rat intestinal epithelial cell-6 lines were also cultured followed by various ***,intestinal epithelial cell injuries,and IL-1β release were *** Compared to the gut“healthy”patients,the intestinal lamina propria of NEC patients had high macrophage infiltration and high NLRP3,caspase-1,and IL-1β ***,in vivo,the survival rate of Nlrp3^(-/-)NEC mice was dramatically improved,the proportion of intestinal macrophages was reduced,and intestinal injury was decreased compared to those of wild-type NEC ***3,caspase-1,and IL-1β derived from macrophages or supernatant from cocultures of macrophages and intestinal epithelial cells also caused intestinal epithelial cell *** Macrophage activation may be essential for NEC ***3/caspase-1/IL-1β cellular signals derived from macrophages may be the underlying mechanism of NEC development,and all these may be therapeutic targets for developing treatments for NEC.

关键词： Caspase-1 Interleukin-1β Macrophage Necrotizing enterocolitis NLRP3

Multi-omics analyses provide insights into the evolutionary history and the synthesis of medicinal components of the Chinese wingnut

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Plant Diversity 2024年第3期46卷 309-320页

作者： Zi-Yan Zhang He-Xiao Xia Meng-Jie yuan Feng Gao Wen-Hua Bao Lan jin Min Li Yong Li College of Life Science and Technology Inner Mongolia Normal UniversityHohhot 010020China Key Laboratory of Biodiversity Conservation and Sustainable Utilization in Mongolian Plateau for College and University of Inner Mongolia Autonomous Region Hohhot 010022China College of Landscape and Art Henan Agricultural UniversityZhengzhou 450002China State Key Laboratory of Tree Genetics and Breeding Chinese Academy of ForestryBeijing 100091China

Chinese wingnut(Pterocarya stenoptera)is a medicinally and economically important tree species within the family ***,the lack of high-quality reference genome has hindered its in-depth *** this study,we successfully assembled its chromosome-level genome and performed multiomics analyses to address its evolutionary history and synthesis of medicinal components.A thorough examination of genomes has uncovered a significant expansion in the Lateral Organ Boundaries Domain gene family among the winged group in *** notable increase may be attributed to their frequent exposure to flood-prone *** further differentiation between Chinese wingnut and Cyclocarya paliurus,significant positive selection occurred on the genes of NADH dehydrogenase related to mitochondrial aerobic respiration in Chinese wingnut,enhancing its ability to cope with waterlogging *** genomic analysis revealed Chinese wingnut evolved more unique genes related to arginine synthesis,potentially endowing it with a higher capacity to purify nutrient-rich water *** of terpene synthase families enables the production of increased quantities of terpenoid volatiles,potentially serving as an evolved defense mechanism against herbivorous *** combined transcriptomic and metabolomic analysis,we identified the candidate genes involved in the synthesis of terpenoid *** study offers essential genetic resources for Chinese wingnut,unveiling its evolutionary history and identifying key genes linked to the production of terpenoid volatiles.

关键词： Genome Medicinal components Metabolome Pterocarya stenoptera Transcriptome