Cystic fibrosis associated islet changes may provide a basis for diabetes

Löhr, Matthias; Goertchen, P.; Nizze, H; Gould, Nevenka S.; Gould, Victor E.; Oberholzer, M.; Heitz, Ph. U.; Klöoppel, G.

doi:10.1007/bf00718598

Cited by 98 publications

(104 citation statements)

References 19 publications

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“…underlies the prevailing hypothesis that CFRD arises from reduced islet mass and/or β cell injury caused by nonspecific "bystander damage" to islets during exocrine pancreatic destruction and inflammation (17)(18)(19). Alternatively, a more direct role for CFTR in the regulation of the endocrine pancreas has been proposed (35,36).…”

Section: Figurementioning

confidence: 99%

“…Partial insulin deficiency occurs in part due to islet loss associated with exocrine pancreas disease (15-18). However, CF pancreata at CFRD autopsy demonstrate that remaining islets contain roughly half the number of insulin-positive cells found in non-CF controls (17,18), and this degree of β cell loss is thought to be insufficient to explain diabetes (19). Thus, insulin deficiency in CFRD is relative and not absolute.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Abnormal endocrine pancreas function at birth in cystic fibrosis ferrets

Olivier¹,

Yi²,

Sun³

et al. 2012

J. Clin. Invest.

122

143

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Diabetes is a common comorbidity in cystic fibrosis (CF) that worsens prognosis. The lack of an animal model for CF-related diabetes (CFRD) has made it difficult to dissect how the onset of pancreatic pathology influences the emergence of CFRD. We evaluated the structure and function of the neonatal CF endocrine pancreas using a new CFTR-knockout ferret model. Although CF kits are born with only mild exocrine pancreas disease, progressive exocrine and endocrine pancreatic loss during the first months of life was associated with pancreatic inflammation, spontaneous hyperglycemia, and glucose intolerance. Interestingly, prior to major exocrine pancreas disease, CF kits demonstrated significant abnormalities in blood glucose and insulin regulation, including diminished first-phase and accentuated peak insulin secretion in response to glucose, elevated peak glucose levels following glucose challenge, and variably elevated insulin and C-peptide levels in the nonfasted state. Although there was no difference in lobular insulin and glucagon expression between genotypes at birth, significant alterations in the frequencies of small and large islets were observed. Newborn cultured CF islets demonstrated dysregulated glucose-dependent insulin secretion in comparison to controls, suggesting intrinsic abnormalities in CF islets. These findings demonstrate that early abnormalities exist in the regulation of insulin secretion by the CF endocrine pancreas. IntroductionCystic fibrosis (CF) is caused by defects in the CF transmembrane conductance regulator (CFTR) chloride channel. Cystic fibrosisrelated diabetes (CFRD) is a common complication of CF and affects 20%-25% of adolescents and 40%-50% of individuals over 30 years of age (1,2). CFRD is associated with worsening clinical status, including reduced pulmonary function, increased frequency of pulmonary exacerbations, and a decline in nutritional status (3-7). Furthermore, CFRD leads to increased mortality compared with CF patients without diabetes (4,8). Thus, early diagnosis and treatment are vital to improving clinical outcome of CFRD patients.While the pathophysiology of CFRD is multifactorial, delayed insulin secretion appears to be a key hallmark of disease progression (9-12), and the health of CF patients is improved by insulin therapy prior to and following diagnosis of overt diabetes (13,14). Partial insulin deficiency occurs in part due to islet loss associated with exocrine pancreas disease (15-18). However, CF pancreata at CFRD autopsy demonstrate that remaining islets contain roughly half the number of insulin-positive cells found in non-CF controls (17,18), and this degree of β cell loss is thought to be insufficient to explain diabetes (19). Thus, insulin deficiency in CFRD is relative and not absolute. All stages of CFRD are characterized by abnormalities in circulating insulin levels (10,12,20,21). Impaired first-phase insulin (IFPI) responses are common in CFRD patients, but also occur in approximately 50% of CF children with normal glucose tolerance (9). Cu...

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Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Abnormal endocrine pancreas function at birth in cystic fibrosis ferrets

Olivier¹,

Yi²,

Sun³

et al. 2012

J. Clin. Invest.

122

143

View full text Add to dashboard Cite

show abstract

“…This disruption is largely due to the viscous pancreatic secretions in CF, which causes obstruction of pancreatic ducts. 104 Destruction of insulinproducing β-cells leads to a decline in insulin release. However, poor correlation between the extent of pancreatic fibrosis and islet cell damage has been reported, as well as little correlation between the degree of insulinopenia and OGTT results.…”

Section: The Effect Of Impaired Glucose Metabolism In Cystic Fibrosismentioning

confidence: 99%

Screening for cystic fibrosis-related diabetes: a systematic review.

Waugh

Royle²,

Craigie³

et al. 2012

Health Technol Assess

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How to obtain copies of this and other HTA programme reports An electronic version of this title, in Adobe Acrobat format, is available for downloading free of charge for personal use from the HTA website (www.hta.ac.uk). A fully searchable DVD is also available (see below).Printed copies of HTA journal series issues cost £20 each (post and packing free in the UK) to both public and private sector purchasers from our despatch agents.Non-UK purchasers will have to pay a small fee for post and packing. For European countries the cost is £2 per issue and for the rest of the world £3 per issue. How to order:-fax (with credit card details) -post (with credit card details or cheque) -phone during office hours (credit card only).Additionally the HTA website allows you to either print out your order or download a blank order form. Contact details are as follows:Synergie UK (HTA Department) Digital House, The Loddon Centre Wade Road Basingstoke Hants RG24 8QW Email: orders@hta.ac.uk Tel: 0845 812 4000 -ask for 'HTA Payment Services' (out-of-hours answer-phone service) Fax: 0845 812 4001 -put 'HTA Order' on the fax header Payment methods Paying by chequeIf you pay by cheque, the cheque must be in pounds sterling, made payable to University of Southampton and drawn on a bank with a UK address.Paying by credit card You can order using your credit card by phone, fax or post. SubscriptionsNHS libraries can subscribe free of charge. Public libraries can subscribe at a reduced cost of £100 for each volume (normally comprising 40-50 titles). The commercial subscription rate is £400 per volume (addresses within the UK) and £600 per volume (addresses outside the UK). Please see our website for details. Subscriptions can be purchased only for the current or forthcoming volume.How do I get a copy of HTA on DVD?Please use the form on the HTA website (www.hta.ac.uk/htacd/index.shtml). HTA on DVD is currently free of charge worldwide.The website also provides information about the HTA programme and lists the membership of the various committees. HTA NIHR Health Technology Assessment programmeThe Health Technology Assessment (HTA) programme, part of the National Institute for Health Research (NIHR), was set up in 1993. It produces high-quality research information on the effectiveness, costs and broader impact of health technologies for those who use, manage and provide care in the NHS. 'Health technologies' are broadly defined as all interventions used to promote health, prevent and treat disease, and improve rehabilitation and long-term care. The research findings from the HTA programme directly influence decision-making bodies such as the National Institute for Health and Clinical Excellence (NICE) and the National Screening Committee (NSC). HTA findings also help to improve the quality of clinical practice in the NHS indirectly in that they form a key component of the 'National Knowledge Service' . The HTA programme is needs led in that it fills gaps in the evidence needed by the NHS. There are three routes to the start of projects...

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“…The loss of insulin-producing beta-cells, secondary to pancreatic fibrosis leading to progressive destruction of the pancreatic islet architecture, is thought to be one of the principal causes of CF-related diabetes (CFRD) (3,4). CFRD also shares a number of clinical and pathological similarities with type 2 DM (5), a disease which is predominantly associated with a significant increase in peripheral insulin resistance (IR).…”

Section: Introductionmentioning

confidence: 99%

Natural history of glucose tolerance, beta-cell function and peripheral insulin sensitivity in cystic fibrosis patients with fasting euglycemia

et al. 2003

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Objective: The loss of pancreatic beta-cells is thought to be one of the principal causes of diabetes mellitus (DM) in cystic fibrosis (CF), but the role of peripheral insulin resistance (IR) in the pathogenesis of DM in CF remains unclear. The aim of this study was to evaluate whether eventual changes of glucose tolerance (GT) over time were associated with modifications of insulin secretion or sensitivity. Methods: Plasma glucose and insulin responses to an oral GT test (OGTT) were investigated and reinvestigated 13 years later in 14 CF patients with initial and persistent fasting euglycemia and no history of insulin treatment. Insulin sensitivity (IS) at both tests was assessed on the basis of insulin and glucose levels both in the fasting state and during OGTTs. Results: From the 1st to the 2nd OGTT: (a) the prevalence of DM responses significantly increased; (b) the areas beneath the respective glucose and insulin curves significantly increased and decreased respectively; (c) IR and IS indices decreased and increased respectively, even in the patients who developed DM; (d) pulmonary function significantly worsened in the entire series, especially in the patients who developed DM. Conclusions: (i) the natural history of glyco-metabolic status in CF is characterized by deteriorating GT over time; (ii) insulinopenia plays a prominent role in the pathogenesis of GT worsening; (iii) IR does not play any significant part in the pathogenesis of DM development; (iv) deterioration of lung function tests is more severe in the subjects who develop DM over time.

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Cystic fibrosis associated islet changes may provide a basis for diabetes

Cited by 98 publications

References 19 publications

Abnormal endocrine pancreas function at birth in cystic fibrosis ferrets

Abnormal endocrine pancreas function at birth in cystic fibrosis ferrets

Screening for cystic fibrosis-related diabetes: a systematic review.

Natural history of glucose tolerance, beta-cell function and peripheral insulin sensitivity in cystic fibrosis patients with fasting euglycemia

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