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Almby, Kristina E.
Publications (6 of 6) Show all publications
Almby, K. E. & Edholm, D. (2019). Anastomotic Strictures After Roux-en-Y Gastric Bypass: a Cohort Study from the Scandinavian Obesity Surgery Registry. Obesity Surgery, 29(1), 172-177
Open this publication in new window or tab >>Anastomotic Strictures After Roux-en-Y Gastric Bypass: a Cohort Study from the Scandinavian Obesity Surgery Registry
2019 (English)In: Obesity Surgery, ISSN 0960-8923, E-ISSN 1708-0428, Vol. 29, no 1, p. 172-177Article in journal (Refereed) Published
Abstract [en]

Background

Roux-en-Y gastric bypass (RYGB) is the most common bariatric procedure worldwide. Anastomotic stricture is a known complication of RYGB. The aim was to explore the incidence and outcomes of strictures within the Scandinavian Obesity Surgery Registry (SOReg).

Method

SOReg included prospective data from 36,362 patients undergoing bariatric surgery in the years 2007–2013. Outcomes were recorded at 30-day and at 1-year follow-up according to the standard SOReg routine. The medical charts of patients suffering from stricture after RYGB were requested and assessed.

Setting

National bariatric surgery registry

Results

Anastomotic stricture within 1 year of surgery was confirmed in 101 patients representing an incidence of 0.3%. Risk factors for stricture were patient age above 60 years (odds ratio (OR), 6.2 95% confidence interval (CI) 2.7–14.3), circular stapled gastrojejunostomy (OR 2.7, 95% CI 1.4–5.5), postoperative anastomotic leak (OR 8.9 95%, CI 4.7–17.0), and marginal ulcer (OR 30.0, 95% CI 19.2–47.0). Seventy-five percent of the strictures were diagnosed within 70 days of surgery. Two dilatations or less was sufficient to successfully treat 50% of patients. Ten pecent of patients developed perforation during dilatation, and the risk of perforating at each dilatation was 3.8%. Perforation required surgery in six cases but there was no mortality. Strictures in SOReg may be underreported, which could explain the low incidence in the study.

Conclusion

Most strictures present within 2 months and are successfully treated with two dilatations or less. Dilating a strictured gastrojejunostomy entails a risk of perforation (3.8%).

Place, publisher, year, edition, pages
New York City: Springer, 2019
Keywords
Gastric bypass surgery, Obesity, Anastomosis, Stricture, Bariatric surgergy, SOReg, Endoscopy, Dilation, Gastric bypass, övervikt, anastomos, striktur, bariatrisk kirurgi, överviktskirurgi, SOReg, endoskopi, dilatation
National Category
Surgery
Research subject
Medical Science; Surgery
Identifiers
urn:nbn:se:uu:diva-374158 (URN)10.1007/s11695-018-3500-9 (DOI)000454946800024 ()30206785 (PubMedID)
Available from: 2019-01-18 Created: 2019-01-18 Last updated: 2019-02-04Bibliographically approved
Almby, K. E., Abrahamsson, N., Lundqvist, M. H., Hammar, U., Thombare, K., Panagiotou, A., . . . Eriksson, J. (2019). Effects of GLP-1 on counter-regulatory responses during hypoglycemia after GBP surgery. European Journal of Endocrinology, 181(2), 161-171
Open this publication in new window or tab >>Effects of GLP-1 on counter-regulatory responses during hypoglycemia after GBP surgery
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2019 (English)In: European Journal of Endocrinology, ISSN 0804-4643, E-ISSN 1479-683X, Vol. 181, no 2, p. 161-171Article in journal (Refereed) Published
Abstract [en]

Objectives: The aim of the study was to explore the role of GLP-1 receptor activation on the counter-regulation and symptoms of hypoglycemia in subjects who have undergone gastric bypass surgery (GBP).

Design: Experimental hyperinsulinemic-hypoglycemic clamp study.

Methods: Twelve post-GBP subjects participated in a randomized cross-over study with two hyperinsulinemic, hypoglycemic clamps (glucose nadir 2.7 mmol/L) performed on separate days with concomitant infusions of the GLP-1 analog exenatide or with saline, respectively. Continuous measurements of metabolites and counter-regulatory hormones as well as assessments of heart rate variability and symptoms of hypoglycemia were performed throughout the clamps.

Results: No effect of GLP-1 receptor activation on counter-regulatory hormones (glucagon, catecholamines, cortisol, GH) or glucose infusion rate was seen, but we found indications of a downregulation of the sympathetic relative to the parasympathetic nerve activity, as reflected in heart rate variability. No significant differences in symptom of hypoglycemia were observed.

Conclusions/interpretation: Short-term exposure to a GLP-1 receptor agonist does not seem to impact the counter-regulatory hormonal and metabolic responses in post-GBP subjects during hypoglycemic conditions, suggesting that the improvement in symptomatic hypoglycemia post-GBP seen following treatment with GLP-1 receptor agonists may be mediated by mechanism not directly involved in counter-regulation.

Place, publisher, year, edition, pages
BIOSCIENTIFICA LTD, 2019
National Category
Endocrinology and Diabetes
Identifiers
urn:nbn:se:uu:diva-390513 (URN)10.1530/EJE-19-0171 (DOI)000472835100013 ()31176298 (PubMedID)
Funder
Swedish Diabetes AssociationErnfors FoundationEXODIAB - Excellence of Diabetes Research in Sweden
Available from: 2019-08-12 Created: 2019-08-12 Last updated: 2019-08-12Bibliographically approved
Kamble, P. G., Pereira, M. J., Almby, K. E. & Eriksson, J. (2019). Estrogen interacts with glucocorticoids in the regulation of lipocalin 2 expression in human adipose tissue. Reciprocal roles of estrogen receptor alpha and beta in insulin resistance?. Molecular and Cellular Endocrinology, 490, 28-36
Open this publication in new window or tab >>Estrogen interacts with glucocorticoids in the regulation of lipocalin 2 expression in human adipose tissue. Reciprocal roles of estrogen receptor alpha and beta in insulin resistance?
2019 (English)In: Molecular and Cellular Endocrinology, ISSN 0303-7207, E-ISSN 1872-8057, Vol. 490, p. 28-36Article in journal (Refereed) Published
Abstract [en]

The adipokine lipocalin 2 (LCN2) is linked to insulin resistance. Its expression in human adipose tissue (AT) can be regulated in a sex-specific manner by a synthetic glucocorticoid, dexamethasone, suggesting an underlying role of sex steroids. We show that 17-beta-estradiol (E2) dose-dependently increased LCN2 gene expression in subcutaneous AT from postmenopausal women. This was also seen in the presence of estrogen receptor (ER) alpha antagonist alone but not with ER beta antagonist, suggesting that E2 effects on LCN2 are mediated via ER beta pathway. Dexamethasone alone or E2 + dexamethasone had no significant effect on LCN2. However, E2+ dexamethasone increased LCN2 expression with ER alpha-blockade. Dexamethasone reduced ER alpha but increased ER beta expression. Dexamethasone can regulate LCN2 expression via inhibition of ER alpha and stimulation of ER beta and may contribute to the development of glucocorticoid-induced insulin resistance in human AT. In conclusion, ER beta and ER alpha pathways have opposite effects on LCN2 expression and they interact with glucocorticoid action.

Place, publisher, year, edition, pages
ELSEVIER IRELAND LTD, 2019
Keywords
Human adipose tissue, Estrogen, Glucocorticoids, Lipocalin2
National Category
Endocrinology and Diabetes
Identifiers
urn:nbn:se:uu:diva-384989 (URN)10.1016/j.mce.2019.04.002 (DOI)000467539600004 ()30953748 (PubMedID)
Funder
Swedish Diabetes AssociationEXODIAB - Excellence of Diabetes Research in SwedenErnfors Foundation
Available from: 2019-06-13 Created: 2019-06-13 Last updated: 2019-06-13Bibliographically approved
Lundqvist, M. H., Almby, K. E., Abrahamsson, N. & Eriksson, J. (2019). Is the Brain a Key Player in Glucose Regulation and Development of Type 2 Diabetes?. Frontiers in Physiology, 10, Article ID 457.
Open this publication in new window or tab >>Is the Brain a Key Player in Glucose Regulation and Development of Type 2 Diabetes?
2019 (English)In: Frontiers in Physiology, ISSN 1664-042X, E-ISSN 1664-042X, Vol. 10, article id 457Article, review/survey (Refereed) Published
Abstract [en]

Ever since Claude Bernards discovery in the mid 19th-century that a lesion in the floor of the third ventricle in dogs led to altered systemic glucose levels, a role of the CNS in whole-body glucose regulation has been acknowledged. However, this finding was later overshadowed by the isolation of pancreatic hormones in the 20th century. Since then, the understanding of glucose homeostasis and pathology has primarily evolved around peripheral mechanism. Due to scientific advances over these last few decades, however, increasing attention has been given to the possibility of the brain as a key player in glucose regulation and the pathogenesis of metabolic disorders such as type 2 diabetes. Studies of animals have enabled detailed neuroanatomical mapping of CNS structures involved in glucose regulation and key neuronal circuits and intracellular pathways have been identified. Furthermore, the development of neuroimaging techniques has provided methods to measure changes of activity in specific CNS regions upon diverse metabolic challenges in humans. In this narrative review, we discuss the available evidence on the topic. We conclude that there is much evidence in favor of active CNS involvement in glucose homeostasis but the relative importance of central vs. peripheral mechanisms remains to be elucidated. An increased understanding of this field may lead to new CNS-focusing pharmacologic strategies in the treatment of type 2 diabetes.

Place, publisher, year, edition, pages
FRONTIERS MEDIA SA, 2019
Keywords
CNS, hypothalamus, glucose, regulation, fMRI, neuroimaging, neuroendocrine, autonomic nervous system
National Category
Physiology
Identifiers
urn:nbn:se:uu:diva-383553 (URN)10.3389/fphys.2019.00457 (DOI)000466111400001 ()
Funder
EU, Horizon 2020, 721236-TREATMENTSwedish Diabetes AssociationErnfors Foundation
Available from: 2019-05-20 Created: 2019-05-20 Last updated: 2019-05-20Bibliographically approved
Pereira, M. J., Boersma, G. J., Kamble, P. G., Lundkvist, P., Almby, K. E. & Eriksson, J. (2018). Direct effects of glucagon on human adipose tissue metabolism. Paper presented at 54th Annual Meeting of the European-Association-for-the-Study-of-Diabetes (EASD), OCT 01-05, 2018, Berlin, GERMANY. Diabetologia, 61, S245-S246
Open this publication in new window or tab >>Direct effects of glucagon on human adipose tissue metabolism
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2018 (English)In: Diabetologia, ISSN 0012-186X, E-ISSN 1432-0428, Vol. 61, p. S245-S246Article in journal, Meeting abstract (Other academic) Published
Place, publisher, year, edition, pages
Springer, 2018
National Category
Endocrinology and Diabetes
Identifiers
urn:nbn:se:uu:diva-367132 (URN)000443556003092 ()
Conference
54th Annual Meeting of the European-Association-for-the-Study-of-Diabetes (EASD), OCT 01-05, 2018, Berlin, GERMANY
Funder
Swedish Society for Medical Research (SSMF)Swedish Diabetes Association
Available from: 2018-11-30 Created: 2018-11-30 Last updated: 2018-11-30Bibliographically approved
Kamble, P. G., Pereira, M. J., Boersma, G. J., Almby, K. E. & Eriksson, J. W. (2018). Estrogen and glucocorticoid effects on lipocalin 2 expression in human adipose tissue: A role of ER beta pathway in insulin resistance?. Paper presented at 54th Annual Meeting of the European-Association-for-the-Study-of-Diabetes (EASD), OCT 01-05, 2018, Berlin, GERMANY. Diabetologia, 61, S289-S289
Open this publication in new window or tab >>Estrogen and glucocorticoid effects on lipocalin 2 expression in human adipose tissue: A role of ER beta pathway in insulin resistance?
Show others...
2018 (English)In: Diabetologia, ISSN 0012-186X, E-ISSN 1432-0428, Vol. 61, p. S289-S289Article in journal, Meeting abstract (Other academic) Published
Place, publisher, year, edition, pages
Springer, 2018
National Category
Endocrinology and Diabetes
Identifiers
urn:nbn:se:uu:diva-367126 (URN)000443556003189 ()
Conference
54th Annual Meeting of the European-Association-for-the-Study-of-Diabetes (EASD), OCT 01-05, 2018, Berlin, GERMANY
Funder
Swedish Research Council
Available from: 2018-11-29 Created: 2018-11-29 Last updated: 2018-11-29Bibliographically approved
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