Cell loss in isolated human islets occurs by apoptosis

S Paraskevas, D Maysinger, R Wang, WP Duguid… - Pancreas, 2000 - journals.lww.com
Purified islet allografts have largely failed to maintain long-term glucose homeostasis in
human recipients, and the reasons for this are unclear. It is noteworthy, however, that islet …

Proinflammatory cytokines activate the intrinsic apoptotic pathway in β-cells

LG Grunnet, R Aikin, MF Tonnesen, S Paraskevas… - Diabetes, 2009 - Am Diabetes Assoc
OBJECTIVE Proinflammatory cytokines are cytotoxic to β-cells and have been implicated in
the pathogenesis of type 1 diabetes and islet graft failure. The importance of the intrinsic …

Structural and functional changes resulting from islet isolation lead to islet cell death

L Rosenberg, R Wang, S Paraskevas, D Maysinger - Surgery, 1999 - Elsevier
Background: Islet isolation exposes the islet to a variety of cellular stresses and disrupts the
cell-matrix relationship—events known to be associated with apoptosis. The purpose of this …

GABA promotes human β-cell proliferation and modulates glucose homeostasis

…, A Tadkase, ZP Feng, Y Li, C Hasilo, S Paraskevas… - Diabetes, 2014 - Am Diabetes Assoc
γ-Aminobutyric acid (GABA) exerts protective and regenerative effects on mouse islet β-cells.
However, in humans it is unknown whether it can increase β-cell mass and improve …

[HTML][HTML] Analysis of beta-cell gene expression reveals inflammatory signaling and evidence of dedifferentiation following human islet isolation and culture

…, A Jetha, R Aikin, C Hasilo, R Sladek, S Paraskevas - PloS one, 2012 - journals.plos.org
The stresses encountered during islet isolation and culture may have deleterious effects on
beta-cell physiology. However, the biological response of human islet cells to isolation …

Clostridium difficile colitis: increasing incidence, risk factors, and outcomes in solid organ transplant recipients

…, M Cantarovich, E Rahme, S Paraskevas… - …, 2012 - journals.lww.com
Background Clostridium difficile-associated diarrhea (CDAD) is an increasingly important
diagnosis in solid organ transplant recipients, with rising incidence and mortality. We describe …

GABA protects human islet cells against the deleterious effects of immunosuppressive drugs and exerts immunoinhibitory effects alone

…, Y Glinka, C Hasilo, S Paraskevas… - …, 2013 - journals.lww.com
Background We recently found that γ-aminobutyric acid (GABA) protects mouse islet β cells.
It prevented autoimmune type 1 diabetes in mice, induced islet β-cell regeneration, and …

Characterization of integrin expression in islets isolated from hamster, canine, porcine, and human pancreas

RN Wang, S Paraskevas… - … of Histochemistry & …, 1999 - journals.sagepub.com
The reasons for the failure of clinical islet transplantation remain obscure. Islet isolation,
however, exposes the islet to variety of cellular stresses, including disruption of the cell-matrix …

Lysine deacetylase inhibition prevents diabetes by chromatin-independent immunoregulation and β-cell protection

…, G Fossati, P Mascagni, S Paraskevas… - Proceedings of the …, 2014 - National Acad Sciences
Type 1 diabetes is due to destruction of pancreatic β-cells. Lysine deacetylase inhibitors (KDACi)
protect β-cells from inflammatory destruction in vitro and are promising …

Postoperative delirium in the intensive care unit predicts worse outcomes in liver transplant recipients

…, P Chaudhury, J Tchervenkov, S Paraskevas… - Canadian Journal of …, 2013 - hindawi.com
BACKGROUND: Delirium is common in intensive care unit patients and is associated with
worse outcome.OBJECTIVE: To identify early risk factors for delirium in patients admitted to …