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  1. AU="Wang, Rui-Hua"
  2. AU="Irish, Ashley"
  3. AU="Derminassian, Andrew D"
  4. AU="Kim, Dalsik"
  5. AU="Shiner, Yotam"
  6. AU="Ali, Mir Mohammad"
  7. AU="Weck Melanie"
  8. AU=Martinez-Riera Jose Ramon AU=Martinez-Riera Jose Ramon
  9. AU="Spano, Luana"
  10. AU="Macomb, Christopher V"
  11. AU="Cylwik, Jolanta"
  12. AU="Mirzabeigi, Parastoo"
  13. AU="Lesage, C"
  14. AU=Kim Donghyun AU=Kim Donghyun
  15. AU="Weisburd, Ben"
  16. AU="van den Berg, Linda M"
  17. AU="Kurochkina, Yu D"
  18. AU="H Cao"
  19. AU="Elias, Rui"
  20. AU="Hofstaedter, Ferdinand"
  21. AU="Ross, Ashley E"
  22. AU="Luque Alarcón, Mónica"

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  1. Artikel ; Online: From reflux esophagitis to Barrett's esophagus and esophageal adenocarcinoma.

    Wang, Rui-Hua

    World journal of gastroenterology

    2015  Band 21, Heft 17, Seite(n) 5210–5219

    Abstract: The occurrence of gastroesophageal reflux disease is common in the human population. Almost all cases of esophageal adenocarcinoma are derived from Barrett's esophagus, which is a complication of esophageal adenocarcinoma precancerous lesions. Chronic ... ...

    Abstract The occurrence of gastroesophageal reflux disease is common in the human population. Almost all cases of esophageal adenocarcinoma are derived from Barrett's esophagus, which is a complication of esophageal adenocarcinoma precancerous lesions. Chronic exposure of the esophagus to gastroduodenal intestinal fluid is an important determinant factor in the development of Barrett's esophagus. The replacement of normal squamous epithelium with specific columnar epithelium in the lower esophagus induced by the chronic exposure to gastroduodenal fluid could lead to intestinal metaplasia, which is closely associated with the development of esophageal adenocarcinoma. However, the exact mechanism of injury is not completely understood. Various animal models of the developmental mechanisms of disease, and theoretical and clinical effects of drug treatment have been widely used in research. Recently, animal models employed in studies on gastroesophageal reflux injury have allowed significant progress. The advantage of using animal models lies in the ability to accurately control the experimental conditions for better evaluation of results. In this article, various modeling methods are reviewed, with discussion of the major findings on the developmental mechanism of Barrett's esophagus, which should help to develop better prevention and treatment strategies for Barrett's esophagus.
    Mesh-Begriff(e) Adenocarcinoma/etiology ; Adenocarcinoma/pathology ; Animals ; Barrett Esophagus/etiology ; Barrett Esophagus/pathology ; Cell Transformation, Neoplastic/pathology ; Disease Models, Animal ; Disease Progression ; Esophageal Neoplasms/etiology ; Esophageal Neoplasms/pathology ; Esophagitis, Peptic/complications ; Esophagitis, Peptic/pathology ; Esophagus/pathology ; Humans ; Mucous Membrane/pathology ; Precancerous Conditions/etiology ; Precancerous Conditions/pathology ; Risk Factors ; Species Specificity
    Sprache Englisch
    Erscheinungsdatum 2015-05-07
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2185929-2
    ISSN 2219-2840 ; 1007-9327
    ISSN (online) 2219-2840
    ISSN 1007-9327
    DOI 10.3748/wjg.v21.i17.5210
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Effects of Aloe Gel on Lactating Women with Nipple Trauma.

    Wang, Rui-Hua / Gong, Jing-Ya / Liu, Peng-Cheng / Liu, Li-Fen / Zhang, Jin-Ting / Yao, Lan / Dong, Qin / Jia, Su-Hong

    Breastfeeding medicine : the official journal of the Academy of Breastfeeding Medicine

    2024  

    Abstract: Background: ...

    Abstract Background:
    Sprache Englisch
    Erscheinungsdatum 2024-03-26
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 2234680-6
    ISSN 1556-8342 ; 1556-8253
    ISSN (online) 1556-8342
    ISSN 1556-8253
    DOI 10.1089/bfm.2023.0265
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: Comparative transcriptome analysis identifies genes associated with chlorophyll levels and reveals photosynthesis in green flesh of radish taproot.

    Li, Yuan-Yuan / Han, Min / Wang, Rui-Hua / Gao, Ming-Gang

    PloS one

    2021  Band 16, Heft 5, Seite(n) e0252031

    Abstract: The flesh of the taproot of Raphanus sativus L. is rich in chlorophyll (Chl) throughout the developmental process, which is why the flesh is green. However, little is known about which genes are associated with Chl accumulation in this non-foliar, ... ...

    Abstract The flesh of the taproot of Raphanus sativus L. is rich in chlorophyll (Chl) throughout the developmental process, which is why the flesh is green. However, little is known about which genes are associated with Chl accumulation in this non-foliar, internal green tissue and whether the green flesh can perform photosynthesis. To determine these aspects, we measured the Chl content, examined Chl fluorescence, and carried out comparative transcriptome analyses of taproot flesh between green-fleshed "Cuishuai" and white-fleshed "Zhedachang" across five developmental stages. Numerous genes involved in the Chl metabolic pathway were identified. It was found that Chl accumulation in radish green flesh may be due to the low expression of Chl degradation genes and high expression of Chl biosynthesis genes, especially those associated with Part Ⅳ (from Protoporphyrin Ⅸ to Chl a). Bioinformatics analysis revealed that differentially expressed genes between "Cuishuai" and "Zhedachang" were significantly enriched in photosynthesis-related pathways, such as photosynthesis, antenna proteins, porphyrin and Chl metabolism, carbon fixation, and photorespiration. Twenty-five genes involved in the Calvin cycle were highly expressed in "Cuishuai". These findings suggested that photosynthesis occurred in the radish green flesh, which was also supported by the results of Chl fluorescence. Our study provides transcriptome data on radish taproots and provides new information on the formation and function of radish green flesh.
    Mesh-Begriff(e) Chlorophyll/analogs & derivatives ; Chlorophyll/biosynthesis ; Computational Biology/methods ; Gene Expression Profiling ; Gene Expression Regulation, Developmental ; Gene Expression Regulation, Plant ; Metabolic Networks and Pathways/genetics ; Photosynthesis/genetics ; Plant Proteins/classification ; Plant Proteins/genetics ; Plant Proteins/metabolism ; Plant Roots/anatomy & histology ; Plant Roots/genetics ; Plant Roots/growth & development ; Plant Roots/metabolism ; Protoporphyrins/biosynthesis ; Raphanus/anatomy & histology ; Raphanus/genetics ; Raphanus/growth & development ; Raphanus/metabolism ; Transcriptome
    Chemische Substanzen Plant Proteins ; Protoporphyrins ; Chlorophyll (1406-65-1) ; chlorophyll a' (22309-13-3) ; protoporphyrin IX (C2K325S808)
    Sprache Englisch
    Erscheinungsdatum 2021-05-27
    Erscheinungsland United States
    Dokumenttyp Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0252031
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Musculoskeletal ultrasound diagnosis of quadrilateral space syndrome: A case report.

    Zhang, Jingfeng / Zhang, Tian / Wang, RuiHua / Wang, Ting

    Medicine

    2021  Band 100, Heft 10, Seite(n) e24976

    Abstract: Introduction: Quadrilateral space syndrome (QSS) is a peripheral nerve entrapment disease, which can be misdiagnosed in clinic. In the past, QSS was mainly diagnosed by clinical symptoms combined with magnetic resonance imaging (MRI), electromyography ( ... ...

    Abstract Introduction: Quadrilateral space syndrome (QSS) is a peripheral nerve entrapment disease, which can be misdiagnosed in clinic. In the past, QSS was mainly diagnosed by clinical symptoms combined with magnetic resonance imaging (MRI), electromyography (EMG), and arterial angiography. There are few reports on the diagnosis of QSS by musculoskeletal ultrasound (MSKUS) combined with clinical symptoms.
    Patient concerns: A middle-aged female patient had posterolateral pain and numbness in her right shoulder for 2 months.
    Diagnoses: At first, she was diagnosed as suprascapular nerve entrapment, while EMG of suprascapular nerve and axillary nerve indicated that nerve conduction was normal. Then, MRI was performed, showing the shoulder had no abnormalities, and EMG and arterial angiography of upper limb showed no abnormalities too. Finally, she was diagnosed as QSS according to MSKUS and lidocaine block test.
    Interventions: Two sealing treatments of axillary nerve block in quadrilateral space under the guidance of MSKUS were performed.
    Outcomes: After 2 treatments, the pain and numbness in her shoulder disappeared, and her shoulder could move normally. There was no recurrence after 3 months of follow-up.
    Conclusion: MSKUS is an effective method to diagnose QSS. It is fast, convenient and inexpensive, and is worth popularizing in clinic.
    Mesh-Begriff(e) Brachial Plexus/diagnostic imaging ; Brachial Plexus Neuropathies/complications ; Brachial Plexus Neuropathies/diagnosis ; Brachial Plexus Neuropathies/therapy ; Deltoid Muscle/diagnostic imaging ; Deltoid Muscle/innervation ; Diagnosis, Differential ; Electromyography ; Female ; Humans ; Magnetic Resonance Imaging ; Middle Aged ; Nerve Block ; Nerve Compression Syndromes/complications ; Nerve Compression Syndromes/diagnosis ; Nerve Compression Syndromes/therapy ; Rotator Cuff/diagnostic imaging ; Rotator Cuff/innervation ; Shoulder/diagnostic imaging ; Shoulder/innervation ; Shoulder Pain/diagnosis ; Shoulder Pain/etiology ; Shoulder Pain/therapy ; Treatment Outcome ; Ultrasonography
    Sprache Englisch
    Erscheinungsdatum 2021-03-24
    Erscheinungsland United States
    Dokumenttyp Case Reports ; Journal Article
    ZDB-ID 80184-7
    ISSN 1536-5964 ; 0025-7974
    ISSN (online) 1536-5964
    ISSN 0025-7974
    DOI 10.1097/MD.0000000000024976
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel ; Online: Analysis of internal spermatic vein embolization through catheter versus laparoscopic high ligation in treatment of left varicocele.

    Jing, Ye-Xiang / Wang, Rui-Hua / Liu, Zhao-Xuan / Meng, Qing-Yi

    Vascular

    2020  Band 28, Heft 5, Seite(n) 583–590

    Abstract: Objective: Varicocele is a common disease in young and middle-aged men. This study aims to compare the efficacy of internal spermatic vein embolization of left varicocele versus laparoscopic high ligation.: Methods: From January 2017 to September ... ...

    Abstract Objective: Varicocele is a common disease in young and middle-aged men. This study aims to compare the efficacy of internal spermatic vein embolization of left varicocele versus laparoscopic high ligation.
    Methods: From January 2017 to September 2018, a total of 69 varicocele patients were admitted and given the opportunity to choose the treatment option. Among these, 26 patients were treated with sclerosing agent injection, while 43 patients underwent laparoscopic surgery. They were followed up for 12 months after surgery, and the technical success rate, recurrence rate, complication rate, cost, operative time, and hospitalization time with regard to these two methods were analyzed.
    Results: All patients completed the medical procedures. There was no recurrence in patients in the sclerotherapy group during the follow-up period; however, the complication rate was 19.2%. Furthermore, the operative time, hospitalization time, and cost of treatment were 31.1 ± 11.1 min, 1.2 ± 0.49 days, and 9613.11 ± 895.97 Yuan, respectively. In the laparoscopic group, 9 patients underwent laparoscopic bilateral high ligation, while 34 patients received treatment on the left side alone. The recurrence rate of left varicocele was 4.7% and the complication rate was 44.2%. Furthermore, the operative time, hospitalization time, and treatment cost were 50.4 ± 14.48 min, 4.0 ± 2.02 days, and 10,948.29 ± 2547.00 Yuan, respectively. Moreover, there were statistically significant differences (
    Conclusion: Patients who underwent sclerotherapy showed a higher technical success rate, a lower recurrence rate, fewer complications, and shorter hospitalization time compared to those treated with laparoscopic ligation. Transcatheter sclerosing agent injection may be a preferable treatment option for patients with unilateral varicocele.
    Mesh-Begriff(e) Adolescent ; Adult ; Catheterization/adverse effects ; Embolization, Therapeutic/adverse effects ; Humans ; Laparoscopy/adverse effects ; Length of Stay ; Ligation ; Male ; Middle Aged ; Postoperative Complications/etiology ; Recurrence ; Retrospective Studies ; Risk Factors ; Sclerosing Solutions/administration & dosage ; Sclerosing Solutions/adverse effects ; Sclerotherapy/adverse effects ; Testis/blood supply ; Time Factors ; Treatment Outcome ; Varicocele/diagnostic imaging ; Varicocele/therapy ; Veins/diagnostic imaging ; Veins/surgery ; Young Adult
    Chemische Substanzen Sclerosing Solutions
    Sprache Englisch
    Erscheinungsdatum 2020-05-09
    Erscheinungsland England
    Dokumenttyp Comparative Study ; Journal Article
    ZDB-ID 2137151-9
    ISSN 1708-539X ; 1708-5381
    ISSN (online) 1708-539X
    ISSN 1708-5381
    DOI 10.1177/1708538120923548
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel: [New developments for endoscopic management of Barrett's esophagus with high grade dysplasia].

    Wang, Rui-Hua

    Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences

    2010  Band 39, Heft 5, Seite(n) 534–541

    Abstract: Barrett's esophagus is now clearly recognized as a preneoplasic condition. Progression of metaplasia through dysplasia to adenocarcinoma is a widely accepted theory for esophageal carcinogenesis. That high grade dysplasia is frequently found in ... ...

    Abstract Barrett's esophagus is now clearly recognized as a preneoplasic condition. Progression of metaplasia through dysplasia to adenocarcinoma is a widely accepted theory for esophageal carcinogenesis. That high grade dysplasia is frequently found in association with esophageal adenocarcinoma. Long-term endoscopic surveillance of high grade dysplasia in Barrett's esophagus facilitates detection and treatment of esophageal cancers in the early stage.
    Mesh-Begriff(e) Barrett Esophagus/diagnosis ; Barrett Esophagus/pathology ; Barrett Esophagus/therapy ; Esophageal Neoplasms/diagnosis ; Esophagoscopy ; Humans ; Hyperplasia/pathology ; Precancerous Conditions/diagnosis
    Sprache Chinesisch
    Erscheinungsdatum 2010
    Erscheinungsland China
    Dokumenttyp English Abstract ; Journal Article ; Review
    ISSN 1008-9292
    ISSN 1008-9292
    DOI 10.3785/j.issn.1008-9292.2010.05.016
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  7. Artikel ; Online: Ceramides regulate defense response by binding to RbohD in Arabidopsis.

    Li, Jian / Yin, Jian / Wu, Jian-Xin / Wang, Ling-Yan / Liu, Yu / Huang, Li-Qun / Wang, Rui-Hua / Yao, Nan

    The Plant journal : for cell and molecular biology

    2022  Band 109, Heft 6, Seite(n) 1427–1440

    Abstract: Sphingolipids, a class of bioactive lipids, play a critical role in signal transduction. Ceramides, which are central components of sphingolipid metabolism, are involved in plant development and defense. However, the mechanistic link between ceramides ... ...

    Abstract Sphingolipids, a class of bioactive lipids, play a critical role in signal transduction. Ceramides, which are central components of sphingolipid metabolism, are involved in plant development and defense. However, the mechanistic link between ceramides and downstream signaling remains unclear. Here, the mutation of alkaline ceramidase in a ceramide kinase mutant acd5 resulted in spontaneous programmed cell death early in development and was accompanied by ceramide accumulation, while other types of sphingolipids, such as long chain base, glucosylceramide, and glycosyl inositol phosphorylceramide, remained at the same level as the wild-type plants. Analysis of the transcriptome indicated that genes related to the salicylic acid (SA) pathway and oxidative stress pathway were induced dramatically in acer acd5 plants. Comparison of the level of reactive oxygen species (ROS), SA, and ceramides in the wild-type and acer acd5 plants at different developmental stages indicated that the acer acd5 mutant exhibited constitutive activation of SA and ROS signaling, which occurred simultaneously with the alteration of ceramides. Overexpressing NahG in the acer acd5 mutant could completely suppress its cell death and ceramide accumulation, while benzo-(1,2,3)-thiadiazole-7-carbothioc acid S-methyl ester treatment restored its phenotype again. Moreover, we found that the plasma membrane of acer acd5 mutant was the main site of ROS production. Ceramides accumulated in the plasma membrane of acer acd5, directly binding and activating the NADPH oxidase RbohD and promoting hydrogen peroxide generation and SA- or defense-related gene activation. Our data illustrated that ceramides play an essential role in plant defense.
    Mesh-Begriff(e) Arabidopsis/metabolism ; Arabidopsis Proteins/genetics ; Arabidopsis Proteins/metabolism ; Ceramides/metabolism ; Mutation ; Salicylic Acid/metabolism ; Sphingolipids/metabolism
    Chemische Substanzen Arabidopsis Proteins ; Ceramides ; Sphingolipids ; Salicylic Acid (O414PZ4LPZ)
    Sprache Englisch
    Erscheinungsdatum 2022-01-17
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1088037-9
    ISSN 1365-313X ; 0960-7412
    ISSN (online) 1365-313X
    ISSN 0960-7412
    DOI 10.1111/tpj.15639
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  8. Artikel: Ceramides regulate defense response by binding to RbohD in Arabidopsis

    Li, Jian / Yin, Jian / Wu, Jian‐Xin / Wang, Ling‐Yan / Liu, Yu / Huang, Li‐Qun / Wang, Rui‐Hua / Yao, Nan

    plant journal. 2022 Mar., v. 109, no. 6

    2022  

    Abstract: Sphingolipids, a class of bioactive lipids, play a critical role in signal transduction. Ceramides, which are central components of sphingolipid metabolism, are involved in plant development and defense. However, the mechanistic link between ceramides ... ...

    Abstract Sphingolipids, a class of bioactive lipids, play a critical role in signal transduction. Ceramides, which are central components of sphingolipid metabolism, are involved in plant development and defense. However, the mechanistic link between ceramides and downstream signaling remains unclear. Here, the mutation of alkaline ceramidase in a ceramide kinase mutant acd5 resulted in spontaneous programmed cell death early in development and was accompanied by ceramide accumulation, while other types of sphingolipids, such as long chain base, glucosylceramide, and glycosyl inositol phosphorylceramide, remained at the same level as the wild‐type plants. Analysis of the transcriptome indicated that genes related to the salicylic acid (SA) pathway and oxidative stress pathway were induced dramatically in acer acd5 plants. Comparison of the level of reactive oxygen species (ROS), SA, and ceramides in the wild‐type and acer acd5 plants at different developmental stages indicated that the acer acd5 mutant exhibited constitutive activation of SA and ROS signaling, which occurred simultaneously with the alteration of ceramides. Overexpressing NahG in the acer acd5 mutant could completely suppress its cell death and ceramide accumulation, while benzo‐(1,2,3)‐thiadiazole‐7‐carbothioc acid S‐methyl ester treatment restored its phenotype again. Moreover, we found that the plasma membrane of acer acd5 mutant was the main site of ROS production. Ceramides accumulated in the plasma membrane of acer acd5, directly binding and activating the NADPH oxidase RbohD and promoting hydrogen peroxide generation and SA‐ or defense‐related gene activation. Our data illustrated that ceramides play an essential role in plant defense.
    Schlagwörter Arabidopsis ; NAD(P)H oxidase (H2O2-forming) ; ceramides ; gene activation ; glucosylceramides ; hydrogen peroxide ; inositols ; mutants ; mutation ; oxidative stress ; pathogenesis-related proteins ; phenotype ; plant development ; plasma membrane ; programmed cell death ; salicylic acid ; signal transduction ; transcriptome
    Sprache Englisch
    Erscheinungsverlauf 2022-03
    Umfang p. 1427-1440.
    Erscheinungsort John Wiley & Sons, Ltd
    Dokumenttyp Artikel
    Anmerkung JOURNAL ARTICLE
    ZDB-ID 1088037-9
    ISSN 1365-313X ; 0960-7412
    ISSN (online) 1365-313X
    ISSN 0960-7412
    DOI 10.1111/tpj.15639
    Datenquelle NAL Katalog (AGRICOLA)

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  9. Artikel ; Online: Orosomucoid proteins limit endoplasmic reticulum stress in plants

    Wang, Ling‐Yan / Li, Jian / Gong, Benqiang / Wang, Rui‐Hua / Chen, Yi‐Li / Yin, Jian / Yang, Chang / Lin, Jia‐Ting / Liu, Hao‐Zhuo / Yang, Yubing / Li, Jianfeng / Li, Chunyu / Yao, Nan

    New Phytologist. 2023 Nov., v. 240, no. 3 p.1134-1148

    2023  

    Abstract: Sphingolipids are cell membrane components and signaling molecules that induce endoplasmic reticulum (ER) stress responses, but the underlying mechanism is unknown. Orosomucoid proteins (ORMs) negatively regulate serine palmitoyltransferase activity, ... ...

    Abstract Sphingolipids are cell membrane components and signaling molecules that induce endoplasmic reticulum (ER) stress responses, but the underlying mechanism is unknown. Orosomucoid proteins (ORMs) negatively regulate serine palmitoyltransferase activity, thus helping maintain proper sphingolipid levels in humans, yeast, and plants. In this report, we explored the roles of ORMs in regulating ER stress in Arabidopsis thaliana. Loss of ORM1 and ORM2 function caused constitutive activation of the unfolded protein response (UPR), as did treatment with the ceramide synthase inhibitor Fumonisin B1 (FB1) or ceramides. FB1 treatment induced the transcription factor bZIP28 to relocate from the ER membrane to the nucleus. The transcription factor WRKY75 positively regulates the UPR and physically interacted with bZIP28. We also found that the orm mutants showed impaired ER‐associated degradation (ERAD), blocking the degradation of misfolded MILDEW RESISTANCE LOCUS‐O 12 (MLO‐12). ORM1 and ORM2 bind to EMS‐MUTAGENIZED BRI1 SUPPRESSOR 7 (EBS7), a plant‐specific component of the Arabidopsis ERAD complex, and regulate its stability. These data strongly suggest that ORMs in the ER membrane play vital roles in the UPR and ERAD pathways to prevent ER stress in Arabidopsis. Our results reveal that ORMs coordinate sphingolipid homeostasis with ER quality control and play a role in stress responses.
    Schlagwörter Arabidopsis thaliana ; cell membranes ; ceramides ; endoplasmic reticulum ; endoplasmic reticulum stress ; fumonisin B1 ; homeostasis ; mildews ; quality control ; serine C-palmitoyltransferase ; sphingosine N-acyltransferase ; transcription factors ; unfolded protein response ; yeasts
    Sprache Englisch
    Erscheinungsverlauf 2023-11
    Umfang p. 1134-1148.
    Erscheinungsort John Wiley & Sons, Ltd
    Dokumenttyp Artikel ; Online
    Anmerkung JOURNAL ARTICLE
    ZDB-ID 208885-x
    ISSN 1469-8137 ; 0028-646X
    ISSN (online) 1469-8137
    ISSN 0028-646X
    DOI 10.1111/nph.19200
    Datenquelle NAL Katalog (AGRICOLA)

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  10. Artikel ; Online: Aberrant accumulation of ceramides in mitochondria triggers cell death by inducing autophagy in Arabidopsis.

    Bao, He-Nan / Yin, Jian / Wang, Ling-Yan / Wang, Rui-Hua / Huang, Li-Qun / Chen, Yi-Li / Wu, Jian-Xin / Sun, Jia-Qi / Liu, Wei-Wei / Yao, Nan / Li, Jian

    Journal of experimental botany

    2023  Band 75, Heft 5, Seite(n) 1314–1330

    Abstract: Sphingolipids are membrane lipids and play critical roles in signal transduction. Ceramides are central components of sphingolipid metabolism that are involved in cell death. However, the mechanism of ceramides regulating cell death in plants remains ... ...

    Abstract Sphingolipids are membrane lipids and play critical roles in signal transduction. Ceramides are central components of sphingolipid metabolism that are involved in cell death. However, the mechanism of ceramides regulating cell death in plants remains unclear. Here, we found that ceramides accumulated in mitochondria of accelerated cell death 5 mutant (acd5), and expression of mitochondrion-localized ceramide kinase (ACD5) suppressed mitochondrial ceramide accumulation and the acd5 cell death phenotype. Using immuno-electron microscopy, we observed hyperaccumulation of ceramides in acer acd5 double mutants, which are characterized by mutations in both ACER (alkaline ceramidase) and ACD5 genes. The results confirmed that plants with specific ceramide accumulation exhibited localization of ceramides to mitochondria, resulting in an increase in mitochondrial reactive oxygen species production. Interestingly, when compared with the wild type, autophagy-deficient mutants showed stronger resistance to ceramide-induced cell death. Lipid profiling analysis demonstrated that plants with ceramide accumulation exhibited a significant increase in phosphatidylethanolamine levels. Furthermore, exogenous ceramide treatment or endogenous ceramide accumulation induces autophagy. When exposed to exogenous ceramides, an increase in the level of the autophagy-specific ubiquitin-like protein, ATG8e, associated with mitochondria, where it directly bound to ceramides. Taken together, we propose that the accumulation of ceramides in mitochondria can induce cell death by regulating autophagy.
    Mesh-Begriff(e) Ceramides/metabolism ; Ceramides/pharmacology ; Arabidopsis/metabolism ; Mitochondria/metabolism ; Autophagy ; Cell Death ; Phosphotransferases (Alcohol Group Acceptor)/genetics ; Arabidopsis Proteins/genetics ; Arabidopsis Proteins/metabolism
    Chemische Substanzen Ceramides ; ACD5 protein, Arabidopsis (EC 2.7.1.138) ; Phosphotransferases (Alcohol Group Acceptor) (EC 2.7.1.-) ; Arabidopsis Proteins
    Sprache Englisch
    Erscheinungsdatum 2023-12-06
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2976-2
    ISSN 1460-2431 ; 0022-0957
    ISSN (online) 1460-2431
    ISSN 0022-0957
    DOI 10.1093/jxb/erad456
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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