Fig. 22.1 Reduced beta cell mass in type 2 diabetic patients, as compared to non-diabetic controls, although there is a marked inter-subject variability.

Slides:



Advertisements
Similar presentations
By Deborah Taylor.  A hormone  Produced in the pancreas by the beta cells of the Islets of Langerhans  Released when sugars are in the stomach  It’s.
Advertisements

Fig. 1.1 TRP channel subfamilies and the transmembrane topology and domain organization of their subunits Transient Receptor Potential Channels, Md. Shahidul.
Is it Diabetes Yet? If there is not enough insulin activity, or the body does not use the insulin effectively…. the body's blood glucose rises.
Conference on Diabetes Types of diabetes mellitus type 1 -- insulin dependent type 2 – insulin independent Experiment with type 1 genetic or environmental.
BC21D Carbohydrate Metabolism Rachael Irving Biochemistry.
Fig Genomic organization of the TRPV5 gene and constructs. (a) The TRPV5 promoter (orange box) consists of a 3.6 kb region between the TRPV5 and.
in the pancreatic beta-cell
Fig Summary of physiological function of the incretins GLP-1 and GIP on islet cells The Islets of Langerhans, Islam, Md. Shahidul (Ed.) ISBN: ,
Diabetes Mellitus By Harvi & Manpreet. What Is It?  complex metabolic disorder  elevated blood glucose concentration  secondary to resistance to action.
Beta Cell Mass in Type 2 DM Gepts et al McClean et al Westermark et al Saito et al Stefan et al Ann Roy Sci Med Nat 10:1, 1957 Reduced Diabetes 4:367,
Control of Blood Glucose. Anatomy to Keep in Mind.
Diabetes. PANCREAS Regulates blood sugar levels and glucose metabolism Secretes 2 hormones Insulin-allows blood sugar (glucose) to be taken out of the.
This page is provided by the Beta Cell Biology Consortium - ( ) Beta Cell Biology Consortium prof. aza prof. aza.
Natural History of Type 2 Diabetes Adapted from International Diabetes Center (IDC), Minneapolis, Minnesota. ObesityIFG*DiabetesUncontrolled Hyperglycemia.
Fig Topology of TRPM8 S4 helix. The model shows the localization of charged amino acids in the TRPM8 S4 segment. F839 and T848 correspond to voltage-sensing.
Journal Club B-PNAS Transfer of insulin containing granules required live beta cells in a close cell contact interaction with the phagocytes. It was increased.
Fig. 4.1 Chemical structures of TRP channel modulator. The structures of several TRP-selective compounds are shown (A: activator; B: blocker) Transient.
Speaker: Kacy Richmond Advisor: Dr. Jun Ren (School of Pharmacy)
Metformin prevents glucotoxicity by alleviating oxidative and ER stress–induced CD36 expression in pancreatic beta cells  Jun Sung Moon, Udayakumar Karunakaran,
Ingo B. Leibiger, Per-Olof Berggren  Molecular Metabolism 
Questions to consider for the exam…
Figure S1 Mean and 95% confidence interval for the mean of tumor protein 53 (p53; Fig.S1a), mouse double minute 2 (MDM2; Fig.S1b), glucose transporter.
Nat. Rev. Nephrol. doi: /nrneph
How it works and why it’s important!
Communication and Homeostasis
Nat. Rev. Endocrinol. doi: /nrendo
Volume 61, Issue 1, Pages S79-S84 (January 2002)
Figure 2 Evidence for the incretin effect and
Fig Current model of the signaling pathways involved in transducing some ionic (a) and chemically complex taste stimuli (b) in taste cells. (a) Ionic.
Fig The predicted membrane topography of the capsaicin receptor TRPV1
A or alpha cells, secrete glucagon. B or beta cells, secrete insulin. The pancreas is a two different organs contained within one structure:-  Exocrine.
Curcumin, a nutritional supplement with antineoplastic activity, enhances leiomyoma cell apoptosis and decreases fibronectin expression  Minnie Malik,
The Research Question Does self monitoring of blood glucose (SMBG) in patients with non-insulin treated type 2 diabetes improve glycemia or quality of.
Insulin and glucagon secretion: nondiabetic and diabetic subjects.
A Clock Ticks in Pancreatic β Cells
Gerry H. Tan, M.D., Roger L. Nelson, M.D.  Mayo Clinic Proceedings 
Fig. 1. Glycemic variability in three hypothetical patients who have the same mean blood glucose concentration. Patient B has relatively small variations.
1.
Insulin biosynthesis: The IREny of it all
Fig. 5.1 HEK293-TRPA1 cells tested on QPatch in single- or multi-hole mode. Single-hole recording of TRPA1 current (a) activated by 30 μM supercinnamaldehyde.
Diabetes Mellitus and the β Cell: The Last Ten Years
Osteoarthritis and Cartilage
Dandan Wang et al. BTS 2018;3: Down-Regulation of miR-24 in Response to Insulin Infusion in Human Plasma Human plasma insulin (A), glucose (B),
Glucose Metabolism: A Sweet Relief of Alzheimer’s Disease
HOMA calculations where glucose is mmol/L and insulin is mU/L
Fig Molecular structure of TRPM4 and TRPM5
Supplementary Figures
Blood Sugar Regulation
Insulin stimulates pyruvate dehydrogenase and protects human ventricular cardiomyocytes from simulated ischemia  Vivek Rao, MD, PhD, Frank Merante, PhD,
Decreased GLP-1 receptor expression in islets after exposure to high glucose. Decreased GLP-1 receptor expression in islets after exposure to high glucose.
Effect of PIs on insulin release by downstream insulin secretogogues.
Fig. 2.1 Structure of TRPV1 determined by electron cryo-microscopy and single particle analysis. On the left is an iso-dense surface in transparent mesh.
Glycemia and glucose tolerance of RIP-N mice.
Left columns: Plasma glucose and serum insulin concentrations, circulating TF-PCA, and FVIIa activity before and during 24 h of selective hyperglycemia.
Zn2+ and NAD(P)H content in Mafa∆panc and Mafa∆panc;Mafb+/− β-cells.
Somatostatin released by δ-cells exerts a tonic inhibition on glucagon and insulin secretion but is not required for the glucagonostatic effect of glucose.
Involvement of PKCα in downregulation of GLP-1 receptor by high glucose in isolated rat islets. Involvement of PKCα in downregulation of GLP-1 receptor.
Npas4 is a stress-induced factor in pancreatic β-cells.
Assay of ROS accumulation in cells exposed to high levels of glucose.
PKA inhibitors do not markedly affect the potentiation of glucose-induced insulin release by GLP-1. PKA inhibitors do not markedly affect the potentiation.
RT-PCR quantification of ubiquitination gene transcripts in rat islets exposed to 2.8 or 16.7 mmol/l glucose for 2 h (A) or 24 h (B). RT-PCR quantification.
In vitro evidence of glucose-induced toxicity in GnRH secreting neurons: high glucose concentrations influence GnRH secretion, impair cell viability,
Increased pancreatic insulin content and islet size and protection against HFD- and palmitate-induced cell death in PKCδKN-overexpressing mice. Increased.
Chronic rapamycin treatment impairs β-cell mass and insulin clearance in rats. Chronic rapamycin treatment impairs β-cell mass and insulin clearance in.
ADCY5 targets nonmetabolic processes to alter Ca2+ responses.
RBP4 and glucose metabolism.
The cyctoprotective endoplasmic reticulum (ER) stress mechanism [32].
(A) Mean glucose concentrations (standard error) over a 3-hour period in 21 placebo- and 15 pramlintide-treated patients with type 1 diabetes treated for.
Hyperplastic alveolar epithelial type II cells show severe endoplasmic reticulum stress and consecutive apoptosis. Hyperplastic alveolar epithelial type.
(A) Twenty-four-hour plasma profiles of insulin and amylin in healthy subjects. (A) Twenty-four-hour plasma profiles of insulin and amylin in healthy subjects.
Presentation transcript:

Fig. 22.1 Reduced beta cell mass in type 2 diabetic patients, as compared to non-diabetic controls, although there is a marked inter-subject variability and clear overlap between the two groups (adapted from [21]) The Islets of Langerhans, Islam, Md. Shahidul (Ed.) ISBN: 978-90-481-3270-6, Springer

Fig. 22.2 Isolated type 2 diabetic (T2DM) islets show Increased apoptosis and enhanced caspase-3 and caspase-8 activities in isolated type 2 diabetic (T2DM) islets, as compared to non-diabetic controls. Adapted from [22] The Islets of Langerhans, Islam, Md. Shahidul (Ed.) ISBN: 978-90-481-3270-6, Springer

Fig. 22.3 ATP production and ATP/ADP ratio increase in non-diabetic but not in type 2 diabetic islets following exposure to 3.3–16.7 mmol/l glucose concentration. Adapted from [27] The Islets of Langerhans, Islam, Md. Shahidul (Ed.) ISBN: 978-90-481-3270-6, Springer

Fig. 22.4 A significant induction of genes involved in endoplasmic reticulum stress (BiP and XBP-1t) in isolated type 2 diabetic islets at increased glucose concentration. Adapted from [23] The Islets of Langerhans, Islam, Md. Shahidul (Ed.) ISBN: 978-90-481-3270-6, Springer

Fig. 22.5 Figure demonstrating the increased the amount of insulin granules in type 2 diabetic beta cells that are pre-exposed to metformin (reproduced with modifications from [22]) The Islets of Langerhans, Islam, Md. Shahidul (Ed.) ISBN: 978-90-481-3270-6, Springer