Ginsenoside Rb1 Ameliorates Autophagy of Hypoxia Cardiomyocytes from Neonatal Rats via AMP-Activated Protein Kinase PathwayAbstractObjective
To investigate whether ginsenoside-Rb1 (Gs-Rb1) improves the CoCl-induced autophagy of cardiomyocytes via upregulation of adenosine 5′-monophosphate-activated protein kinase (AMPK) pathway.
Methods
Ventricles from 1- to 3-day-old Wistar rats were sequentially digested, separated and incubated in Dulbecco’s modified Eagle’s medium supplemented with 10% fetal bovine serum for 3 days followed by synchronization. Neonatal rat cardiomyocytes were randomly divided into 7 groups: control group (normal level oxygen), hypoxia group (500 μmol/L CoCl2), Gs-Rb1 group (200 μmol/L Gs-Rb1 + 500 μmol/L CoCl2), Ara A group (500 μmol/L Ara A + 500 μmol/L CoCl2), Ara A+ Gs-Rb1 group (500 μmol/L Ara A + 200 μmol/L Gs-Rb1 + 500 μmol/L CoCl2), AICAR group [1 mmol/L 5-aminoimidazole-4-carboxamide ribonucleotide (AICAR) + 500 μmol/L CoCl2], and AICAR+Gs-Rb1 group (1 mmol/L AICAR + 200 μmol/L Gs-Rb1 + 500 μmol/L CoCl2). Cells were treated for 12 h and cell viability was determined by methylthiazolyldiphenyl-tetrazolium bromide (MTT) assay and cardiac troponin I (cTnI) levels were detected by enzyme-linked immunosorbent assay (ELISA). AMPK activity was assessed by 2′,7′-dichlorofluorescein diacetate (DCFH-DA) ELISA assay. The protein expressions of Atg4B, Atg5, Atg6, Atg7, microtubule-associated protein 1A/1B-light chain 3 (LC3), P62, and active-cathepsin B were measured by Western blot.
Results
Gs-Rb1 significantly improved the cell viability of hypoxia cardiomyocytes (P<0.01). However, the viability of hypoxia-treated cardiomyocytes was significantly inhibited by Ara A (P<0.01). Gs-Rb1 increased the AMPK activity of hypoxia-treated cardiomyocytes. The AMPK activity of hypoxia-treated cadiomyocytes was inhibited by Ara A (P<0.01) and was not affected by AICAR =0.983). Gs-Rb1 up-regulated Atg4B, Atg5, Beclin-1, Atg7, LC3B II, the LC3B II/I ratio and cathepsin B activity of hypoxia cardiomyocytes (P<0.05), each of these protein levels was significantly enhanced by Ara A (all P<0.01), but was not affected by AICAR (all P>0.05). Gs-Rb1 significantly down-regulated P62 levels of hypoxic cardiomyocytes (P<0.05). The P62 levels of hypoxic cardiomyocytes were inhibited by Ara A (P<0.05) and were not affected by AICAR (P=0.871).
Conclusion
Gs-Rb1 may improve the viability of hypoxia cardiomyocytes by ameliorating cell autophagy via the upregulation of AMPK pathway.
|
ΩτοΡινοΛαρυγγολόγος Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,
Translate
Ετικέτες
Τρίτη 9 Ιουλίου 2019
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
Αρχειοθήκη ιστολογίου
-
►
2023
(278)
- ► Φεβρουαρίου (139)
- ► Ιανουαρίου (139)
-
►
2022
(1962)
- ► Δεκεμβρίου (107)
- ► Σεπτεμβρίου (158)
- ► Φεβρουαρίου (165)
- ► Ιανουαρίου (163)
-
►
2021
(3614)
- ► Δεκεμβρίου (152)
- ► Σεπτεμβρίου (271)
- ► Φεβρουαρίου (64)
- ► Ιανουαρίου (357)
-
►
2020
(3279)
- ► Δεκεμβρίου (396)
- ► Σεπτεμβρίου (157)
- ► Φεβρουαρίου (382)
- ► Ιανουαρίου (84)
-
▼
2019
(11718)
- ► Δεκεμβρίου (265)
- ► Σεπτεμβρίου (545)
-
▼
Ιουλίου
(1727)
- Viruses, Vol. 11, Pages 701: Metagenomic N...
- Vaccines, Vol. 7, Pages 77: Nanobodies that Neutr...
- Antibiotic and Pesticides Residues in Breast Milk
- Social Sciences, Vol. 8, Pages 229: The Street-Wi...
- Psych, Vol. 1, Pages 429-430: Expression of Conce...
- Microorganisms, Vol. 7, Pages 230: Contras...
- Medicina, Vol. 55, Pages 423: Handheld Ult...
- JCM, Vol. 8, Pages 1144: Shock Index Predi...
- Humanities, Vol. 8, Pages 130: The Composi...
- Children, Vol. 6, Pages 89: Emerging Topics in Ca...
- Cancers, Vol. 11, Pages 1091: Glioblastoma...
- Impact of skeletal muscle mass volume on surgica...
- A method using the cephalic vein for superdraina...
- Direct muscle neurotization with long acellular ...
- Allergy, Asthma , Immunology
- CranioMaxillofacial Surgery
- Neuroradiology/Head and Neck ImagingOriginal Res...
- Systems approach reveals photosensitivity and P...
- NeuroOncology
- Griseofulvin versus Terbinafine for pediatric Ti...
- Identification of Cryptococcus Antigen in HIV‐po...
- Epidemiology and Management Burden of Invasive F...
- Phaeohyphomycosis caused by Phialophora american...
- MicrosurgeryEarly View Online Version of Recor...
- Chondro-Osseous Respiratory Epithelial Adenoma...
- Otolaryngology
- Adult-Type Rhabdomyoma of the Omohyoid Muscle ...
- Thyroglossal Duct Cyst Carcinoma in a Young Fe...
- Case Reports in Otolaryngology Volume 2019, Arti...
- Lung Perfusion Scintigraphy in Eisenmenger Syndr...
- Case Reports in Otolaryngology
- Otology & Neurotology
- Hunger-Activated AgRP Neurons Inhibit MPOA Neur...
- Development of a delayed-release nutrient for appe...
- Neoadjuvant BRAF‐targeted therapy in regionally ...
- Discoidin domain receptors: A promising target i...
- Self-seeding circulating tumor cells promote th...
- Necrosis Rather Than Apoptosis is The Dominant f...
- Magician's Corner: How to Start Lear...
- Impact of Long Wavelength Ultraviolet A1 and Vis...
- Method for Measurements of Terrestrial Ultravio...
- Unusually complicated course of a common disease...
- Lead poisoning has been described in older childre...
- Teaching Topic Immediate Transfusion in Africa...
- INTERACTIVE MEDICAL CASE
- Weighing the Risks and Rewards of Peanut Oral...
- Buried bumper syndrome (BBS) is one of the uncommo...
- GASTROENTEROLOGY ENDOSCOPY: NOT JUST A PROCEDURA...
- Health Physics
- Techniques in Shoulder & Elbow Surgery
- Primer on Precision Medicine for Complex Chronic...
- Clinical and Translational Gastroenterology
- Technological Pedagogical and Content Knowledge ...
- Intraoperative Placement of Paravertebral Cathet...
- Heterogeneity of human pancreatic islet isolatio...
- Anaesthesia
- Academic Medicine
- Menopause
- Clinical Orthopaedics and Related Research(R)
- pH-sensitive anti-CTLA4 antibodies: yes to effi...
- Therapeutics
- American Journal of Therapeutics
- FULL MOON > AUGUST - We have the Algonquin Indians...
- Medicine by Alexandros G. Sfakianakis,Anapafseos 5...
- Pediatric Radiology
- Obesity Surgery
- Pediatric Orthopaedics
- Rheumatology
- Anaesthesiology
- Cardiovascular Medicine
- Medicine by Alexandros G. Sfakianakis,Anapafseos 5...
- Trauma and Acute Care Surgery
- Cancer Research and Clinical Oncology
- Endocrine
- Medicine by Alexandros G. Sfakianakis,Anapafseos 5...
- Hypertension
- Angiogenesis
- Musculoskeletal Surgery
- Physiological Sciences
- Cardiology
- Gastroenterology
- Medicine by Alexandros G. Sfakianakis,Anapafseos 5...
- Update on treatment options for blast-induced he...
- Triglycerides and endothelial function: molecula...
- Neuropsychology as a Method of Diagnosis and Tre...
- Combination of laser microdissection, 2D-DIGE an...
- Plasma lipoproteome in Alzheimer’s disease: a p...
- Validation of a novel model for the early dete...
- Journal of the European Academy of Dermatology a...
- ► Φεβρουαρίου (1143)
- ► Ιανουαρίου (744)
-
►
2017
(2)
- ► Φεβρουαρίου (1)
- ► Ιανουαρίου (1)
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου