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Volume 14, Issue 6, Pages (November 2014)

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Presentation on theme: "Volume 14, Issue 6, Pages (November 2014)"— Presentation transcript:

1 Volume 14, Issue 6, Pages 454-458 (November 2014)
Electron-microscopic evidence of mitochondriae containing macroautophagy in experimental acute pancreatitis: Implications for cell death  Tony George Jacob, Vipin Iyani Sreekumar, Tara Sankar Roy, Pramod Kumar Garg  Pancreatology  Volume 14, Issue 6, Pages (November 2014) DOI: /j.pan Copyright © 2014 IAP and EPC Terms and Conditions

2 Fig. 1 Photomicrographs of H&E stained, 5μ thick sections of the pancreas derived from mice of Groups 2 (‘A’ and ‘B’) and 3 (‘C’ and ‘D’). ‘C’ when compared to ‘A’ shows more inflammatory infiltration (arrows) and even sites of microhemorrhages (He). G2 also shows more apoptosis (Ap) than necrosis (Ne). Pancreatology  , DOI: ( /j.pan ) Copyright © 2014 IAP and EPC Terms and Conditions

3 Fig. 2 Electron micrograph of a normal pancreatic acinar cell showing normal mitochondria [M], nucleus [N], zymogen granules [Z] and rough endoplasmic reticulum [rER]. Scale bar = 1 μm. Pancreatology  , DOI: ( /j.pan ) Copyright © 2014 IAP and EPC Terms and Conditions

4 Fig. 3 Electron micrograph of the pancreatic acinar cell from a mouse that received 4 injections of caerulein showing zymogen granules [Z], mitochondria [M] and a large autophagosome [arrows] containing abnormal mitochondria [aM], organellar membranes [OM] and zymogen granules [Zy]. N.B. the zymogen granule marked with ‘Z’ appears to be docking on the autophagosomal membrane. Scale bar = 1 μm. Pancreatology  , DOI: ( /j.pan ) Copyright © 2014 IAP and EPC Terms and Conditions

5 Fig. 4 Photomicrograph of the TEM of the pancreas derived from an animal that received 8 injections of caerulein showing a large autophagosome [Au] containing a mitochondria [M] showing dilated and abnormal cristae [inset]. The dashed arrow indicates a nuclear fragment within the autophagosome. Scale bar = 1 μm [inset = 200 μm]. Pancreatology  , DOI: ( /j.pan ) Copyright © 2014 IAP and EPC Terms and Conditions

6 Fig. 5 Electron micrograph of a pancreatic acinar cell from a mouse that received 8 hourly injections of caerulein, showing a nucleus [N] with peripheral condensation of chromatin indicative of apoptosis, deformed rough endoplasmic reticulum [rER] and an autophagosome [inset] containing zymogen granules [Z] and mitochondria edema and deformed cristae. Scale bar = 2 μm. Pancreatology  , DOI: ( /j.pan ) Copyright © 2014 IAP and EPC Terms and Conditions

7 Fig. 6 Electron micrograph of a pancreatic acinar cell from a mouse that received 8 hourly injections of caerulein, showing an autophagosome containing abnormal mitochondriae (aM). The double membrane of the autophagosome can be appreciated (arrow). Pancreatology  , DOI: ( /j.pan ) Copyright © 2014 IAP and EPC Terms and Conditions

8 Fig. 7 Photomicrographs of H&E stained, 5μ thick sections of the pancreas derived from rats that were given saline infusion into the main pancreatic duct (‘A’ and ‘B’) and Na-taurocholate (‘C’ and ‘D’). The saline infusion produces intralobular edema and mild inflammation (In); whereas infusion with Na-taurocholate produces more edema, inflammation and even microhemorrhages (He). PD = interlobular pancreatic duct. Pancreatology  , DOI: ( /j.pan ) Copyright © 2014 IAP and EPC Terms and Conditions

9 Fig. 8 Transmission electronmicrograph of a section of the pancreas derived from a rat that was given saline infusion into the main pancreatic duct showing a large macroautophagosome containing zymogen granules, dilated RER and mitochondriae. Inset: magnified view of the area in the box, showing the cristae of the mitochondria (M). Pancreatology  , DOI: ( /j.pan ) Copyright © 2014 IAP and EPC Terms and Conditions

10 Supplementary Fig. 1 Transmission electronmicrograph of a section of the pancreas derived from a rat that was given saline infusion into the main pancreatic duct showing a pancreatic acinar cell with two nuclei, expanded RER and apical zymogen granules. Pancreatology  , DOI: ( /j.pan ) Copyright © 2014 IAP and EPC Terms and Conditions

11 Supplementary Fig. 2 Transmission electronmicrograph of a section of the pancreas derived from a rat that was given Na-taurocholate infusion into the main pancreatic duct showing a large macroautophagosome (Au). The arrows indicate the double-layered membrane that is enclosing the autophagosome. ‘M’ indicates normal mitochondriae. Pancreatology  , DOI: ( /j.pan ) Copyright © 2014 IAP and EPC Terms and Conditions

12 Supplementary Fig. 3 Electron micrograph of a pancreatic acinar cell from a mouse that received 8 hourly injections of caerulein, showing necrotic morphology-the arrows indicate a disrupted cell membrane and basement membrane; abnormal mitochondriae (M), rough endoplasmic reticulum (rER). The boundaries of the autophagosome have become blurred but they still contain zymogen granules (Z). Pancreatology  , DOI: ( /j.pan ) Copyright © 2014 IAP and EPC Terms and Conditions


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