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Pancreatic function tests

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https://www.readbyqxmd.com/read/28425308/the-effect-of-molecular-weights-of-microencapsulating-polymers-on-viability-of-mouse-cloned-pancreatic-%C3%AE-cells-biomaterials-osmotic-forces-and-potential-applications-in-diabetes-treatment
#1
Armin Mooranian, Ryu Tackechi, Emma Jamieson, Grant Morahan, Hani Al-Salami
INTRODUCTION: Ideal cell-containing microcapsules should be capable of maintaining cell viability and exhibit significant structural stability to support cellular functionality. To date, such microcapsules remain unavailable, thus, this study used our well-established microencapsulating methods to examine a total of 32 different microencapsulating formulations and correlate polymers' molecular weights (Mwt) and UDCA addition, with cell viability and microcapsules' stability, postmicroencapsulation...
April 20, 2017: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/28424185/very-long-chain-%C3%AF-3-fatty-acid-supplements-and-adipose-tissue-functions-a-randomized-controlled-trial
#2
Kazanna C Hames, Maria Morgan-Bathke, Debra A Harteneck, Lendia Zhou, John D Port, Ian R Lanza, Michael D Jensen
Background: Increased omega-3 (n-3) fatty acid consumption is reported to benefit patients with metabolic syndrome, possibly due to improved adipose tissue function.Objective: We tested the effects of high-dose, very-long-chain ω-3 fatty acids on adipose tissue inflammation and insulin regulation of lipolysis.Design: A double-blind, placebo-controlled study compared 6 mo of 3.9 g eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)/d (4.2 g total ω-3/d; n = 12) with a placebo (4.2 g oleate/d; n = 9) in insulin-resistant adults...
April 19, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28417202/cardiorespiratory-fitness-and-muscle-strength-in-pancreatic-cancer-patients
#3
Dorothea Clauss, Christine Tjaden, Thilo Hackert, Lutz Schneider, Cornelia M Ulrich, Joachim Wiskemann, Karen Steindorf
PURPOSE: Cancer patients frequently experience reduced physical fitness due to the disease itself as well as treatment-related side effects. However, studies on physical fitness in pancreatic cancer patients are missing. Therefore, we assessed cardiorespiratory fitness and muscle strength of pancreatic cancer patients. METHODS: We included 65 pancreatic cancer patients, mostly after surgical resection. Cardiorespiratory fitness was assessed using cardiopulmonary exercise testing (CPET) and 6-min walk test (6MWT)...
April 17, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28416605/photodynamic-therapy-using-photosensitizer-encapsulated-polymeric-nanoparticle-to-overcome-atp-binding-cassette-transporter-subfamily-g2-function-in-pancreatic-cancer
#4
Yoon Jin Roh, Ju Hee Kim, In-Wook Kim, Kun Na, Jae Myung Park, Myung-Gyu Choi
Chlorin-based photosensitizers are commonly used in photodynamic therapy (PDT).  These drugs are effluxed by cell-membrane transporters, such as the ATP-binding cassette subfamily G member 2 (ABCG2). PDT efficacy is limited in tumor cells expressing high levels of these proteins. Pancreatic cancer cell lines AsPC-1 and MIA PaCa-2, which have high and low ABCG2 expression, respectively, were used and ABCG2-overexpressing MIA PaCa-2 cells were generated. We compared PDT efficacy between Chlorin e6 (Ce6) and cationic photosensitizer-encapsulated polymeric nanoparticle (PS-pNP) which is comprised with Ce6, polyethylene glycol and polyethylenimine...
April 17, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28413737/amino-acid-leucine-chromatography-a-study-of-branched-chain-aminoaciduria-in-type-2-diabetes
#5
Bhagavan Reddy Kolanu, Venugopal Boddula, Sabitha Vadakedath, Venkataramana Kandi
INTRODUCTION: Diabetes is a disease characterized by insulin deficiency resulting in glucose intolerance and in abnormalities of other metabolic fuels including protein. Recently, a number of studies have revealed that branched-chain amino acids (BCAAs) (leucine, isoleucine, and valine) play an important role in the regulation of protein synthesis by activating mammalian target of rapamycin (mTOR) in pancreatic β cells. BCAAs have positive effects on the regulation of glucose homeostasis...
March 12, 2017: Curēus
https://www.readbyqxmd.com/read/28411546/design-and-discovery-of-silybin-analogues-as-antiproliferative-compounds-using-a-ring-disjunctive-based-natural-product-lead-optimization-approach
#6
Elangovan Manivannan, Haneen Amawi, Noor Hussein, Chandrabose Karthikeyan, Aubry Fetcenko, N S Hari Narayana Moorthy, Piyush Trivedi, Amit K Tiwari
The present study reports the synthesis and anticancer activity evaluation of twelve novel silybin analogues designed using a ring disjunctive-based natural product lead (RDNPL) optimization approach. All twelve compounds were tested against a panel of cancer cells (i.e. breast, prostate, pancreatic, and ovarian) and compared with normal cells. While all of the compounds had significantly greater efficacy than silybin, derivative 15k was found to be highly potent (IC50 < 1 μM) and selective against ovarian cancer cell lines, as well as other cancer cell lines, compared to normal cells...
March 22, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28410364/loss-of-arf4-causes-severe-degeneration-of-the-exocrine-pancreas-but-not-cystic-kidney-disease-or-retinal-degeneration
#7
Jillian N Pearring, Jovenal T San Agustin, Ekaterina S Lobanova, Christopher J Gabriel, Eric C Lieu, William J Monis, Michael W Stuck, Lara Strittmatter, Samer M Jaber, Vadim Y Arshavsky, Gregory J Pazour
Arf4 is proposed to be a critical regulator of membrane protein trafficking in early secretory pathway. More recently, Arf4 was also implicated in regulating ciliary trafficking, however, this has not been comprehensively tested in vivo. To directly address Arf4's role in ciliary transport, we deleted Arf4 specifically in either rod photoreceptor cells, kidney, or globally during the early postnatal period. Arf4 deletion in photoreceptors did not cause protein mislocalization or retinal degeneration, as expected if Arf4 played a role in protein transport to the ciliary outer segment...
April 14, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28409821/nano-curcumin-safely-prevents-streptozotocin-induced-inflammation-and-apoptosis-in-pancreatic-%C3%A3-cells-for-effective-management-of-type-1-diabetes-mellitus
#8
Raghu Ganugula, Meenakshi Arora, Patcharawalai Jaisamut, Ruedeekorn Wiwattanapatapee, Heather G Jørgensen, Vinod P Venkatpurwar, Beiyan Zhou, Aline Rodrigues Hoffmann, Rita Basu, Shaodong Guo, Majeti N V Ravi Kumar
BACKGROUND AND PURPOSE: Approaches to prevent selective and progressive loss of insulin-producing ß-cells in Type 1 diabetes mellitus (T1DM) will help conquer this prevalent and devastating disease. Curcumin (CUR), a natural anti-inflammatory, suppresses diabetes associated inflammation and cell death. However, very high doses have been tested owing to poor oral bioavailability, making it difficult to translate to the clinic. EXPERIMENTAL APPROACH: We recently prepared biodegradable nanosystems encapsulating curcumin (nCUR), resulting in at least 9-fold improvement in oral bioavailability...
April 13, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28406435/associations-of-dietary-glucose-fructose-and-sucrose-with-%C3%AE-cell-function-insulin-sensitivity-and-type-2-diabetes-in-the-maastricht-study
#9
Louise J C J den Biggelaar, Simone J P M Eussen, Simone J S Sep, Andrea Mari, Ele Ferrannini, Martien C J M van Dongen, Karlijn F M Denissen, Nicole E G Wijckmans, Miranda T Schram, Carla J van der Kallen, Annemarie Koster, Nicolaas Schaper, Ronald M A Henry, Coen D A Stehouwer, Pieter C Dagnelie
The associations of glucose, fructose, and sucrose intake with type 2 diabetes mellitus (T2DM) have been inconsistent. Furthermore, there is a lack of studies focusing on early markers of T2DM that provide insight into the process of T2DM progression: impaired pancreatic β-cell function (BCF) and insulin sensitivity. This study evaluated associations cross-sectionally in a population-based cohort consisting of 2818 individuals (mean ± SD age 59.7 ± 8.18, 49.5% male, n = 120 newly diagnosed T2DM). Glucose, fructose, and sucrose intake were assessed by a food frequency questionnaire...
April 13, 2017: Nutrients
https://www.readbyqxmd.com/read/28405527/jak-stat-mediated-chronic-inflammation-impairs-cytotoxic-t-lymphocyte-activation-to-decrease-anti-pd-1-immunotherapy-efficacy-in-pancreatic-cancer
#10
Chunwan Lu, Asif Talukder, Natasha M Savage, Nagendra Singh, Kebin Liu
Human pancreatic cancer does not respond to immune check point blockade immunotherapy. One key feature of pancreatic cancer is the association between its progression and chronic inflammation. Emerging evidence supports a key role for the JAK-STAT pathway in pancreatic cancer inflammation. We aimed at testing the hypothesis that sustained JAK-STAT signaling suppresses cytotoxic T lymphocyte (CTL) activation to counteract anti-PD-1 immunotherapy-induced CTL activity in pancreatic cancer. We show that human pancreatic carcinomas express high level of PD-L1 and exhibit low level of CTL infiltration...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28405150/comparing-acid-steatocrit-and-faecal-elastase-estimations-for-use-in-m-annheim-staging-for-pancreatitis
#11
M Ganesh Kamath, C Ganesh Pai, Asha Kamath, Annamma Kurien
AIM: To compare two tests for exocrine pancreatic function (EPF) for use in M-ANNHEIM staging for pancreatitis. METHODS: One hundred and ninety four consecutive patients with acute pancreatitis (AP; n = 13), recurrent acute pancreatitis (RAP; n = 65) and chronic pancreatitis (CP; n = 116) were enrolled. EPF was assessed by faecal elastase-1 (FE-1) estimation and stool fat excretion by the acid steatocrit method. Patients were classified as per M-ANNHEIM stages separately based on the results of the two tests for comparison...
March 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28403936/the-short-term-and-long-term-effects-of-bariatric-metabolic-surgery-on-subcutaneous-adipose-tissue-inflammation-in-humans
#12
Derek K Hagman, Ilona Larson, Jessica N Kuzma, Gail Cromer, Karen Makar, Katya B Rubinow, Karen E Foster-Schubert, Brian van Yserloo, Peter S Billing, Robert W Landerholm, Matthew Crouthamel, David R Flum, David E Cummings, Mario Kratz
CONTEXT: The mechanisms mediating the short- and long-term improvements in glucose homeostasis following bariatric/metabolic surgery remain incompletely understood. OBJECTIVE: To investigate whether a reduction in adipose tissue inflammation plays a role in the metabolic improvements seen after bariatric/metabolic surgery, both in the short-term and longer-term. DESIGN: Fasting blood and subcutaneous abdominal adipose tissue were obtained before (n=14), at one month (n=9), and 6-12months (n=14) after bariatric/metabolic surgery from individuals with obesity who were not on insulin or anti-diabetes medication...
May 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28403169/osteopontin-activates-the-diabetes-associated-potassium-channel-talk-1-in-pancreatic-%C3%AE-cells
#13
Matthew T Dickerson, Nicholas C Vierra, Sarah C Milian, Prasanna K Dadi, David A Jacobson
Glucose-stimulated insulin secretion (GSIS) relies on β-cell Ca2+ influx, which is modulated by the two-pore-domain K+ (K2P) channel, TALK-1. A gain-of-function polymorphism in KCNK16, the gene encoding TALK-1, increases risk for developing type-2 diabetes. While TALK-1 serves an important role in modulating GSIS, the regulatory mechanism(s) that control β-cell TALK-1 channels are unknown. Therefore, we employed a membrane-specific yeast two-hybrid (MYTH) assay to identify TALK-1-interacting proteins in human islets, which will assist in determining signaling modalities that modulate TALK-1 function...
2017: PloS One
https://www.readbyqxmd.com/read/28397308/improvement-of-isolated-caprine-islet-survival-and-functionality-in-vitro-by-enhancing-of-pdx1-gene-expression
#14
Homayoun Hani, Zeenathul Nazariah Allaudin, Mohd-Azmi Mohd-Lila, Kazhal Sarsaifi, Mina Rasouli, Yew Joon Tam, Tengku-Azmi Tengku-Ibrahim, Abas Mazni Othman
BACKGROUND: Dead islets replaced with viable islets are a promising offer to restore normal insulin production to a person with diabetes. The main reason for establishing a new islet source for transplantation is the insufficiency of human donor pancreas while using xenogeneic islets perhaps assists this problem. The expression of PDX1 is essential for the pancreas expansion. In mature β-cells, PDX1 has several critical roles such as glucose sensing, insulin synthesis, and insulin secretion...
April 11, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28394923/effects-and-underlying-mechanisms-of-irisin-on-the-proliferation-and-apoptosis-of-pancreatic-%C3%AE-cells
#15
Shiwei Liu, Fang Du, Xin Li, Mingming Wang, Ruixue Duan, Jiaxin Zhang, Yaru Wu, Qi Zhang
Pancreatic β cell dysfunction and reduction due to glucose toxicity play a crucial role in the development of type 2 diabetes mellitus (T2DM). Irisin, a novel exercise-induced myokine, reduces obesity, improves insulin resistance and lowers blood glucose by promoting the browning of white adipose tissue, thereby enhancing thermogenesis and increasing energy expenditure. Recent studies have reported that irisin promotes cell proliferation and protects cells from apoptosis. However, the effects of irisin on pancreatic β cells are unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28390062/outcome-of-laparoscopic-adrenalectomy-for-resection-of-unilateral-noninvasive-adrenocortical-tumors-in-11-cats
#16
Jeffrey W Mitchell, Philipp D Mayhew, William T N Culp, J Brad Case, Ameet Singh, Mark C Fuller, Ann Della Maggiore
OBJECTIVE: To describe the technique and outcomes of laparoscopic adrenalectomy (LA) in cats with adrenocortical neoplasia. STUDY DESIGN: Retrospective case series. ANIMALS: Eleven client-owned cats with unilateral adrenal tumors. METHODS: Medical records of cats that underwent LA for unilateral functional adrenal tumors at 3 veterinary teaching hospitals were reviewed. Data collected included signalment, clinical signs, physical examination findings, diagnostic imaging results, preoperative laboratory tests, laparoscopic port placement and techniques, duration of anesthesia and surgery, complications, concomitant procedures, need for conversion to an open celiotomy, histopathological diagnosis, and postoperative survival...
April 8, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28388589/egfr-induced-phosphorylation-of-type-i%C3%AE-phosphatidylinositol-phosphate-kinase-promotes-pancreatic-cancer-progression
#17
Chunhua Chen, Xiangling Wang, Juemin Fang, Junli Xue, Xunhao Xiong, Yan Huang, Jinghua Hu, Kun Ling
Pancreatic cancer is one of the deadliest malignancies and effective treatment has always been lacking. In current study, we investigated how the type Iγ phosphatidylinositol phosphate kinase (PIPKIγ) participates in the progression of pancreatic ductal adenocarcinoma (PDAC) for novel therapeutic potentials against this lethal disease. We found that PIPKIγ is up-regulated in all tested PDAC cell lines. The growth factor (including EGFR)-induced tyrosine phosphorylation of PIPKIγ is significantly elevated in in situ and metastatic PDAC tissues...
March 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28386307/sulforaphane-protects-against-high-cholesterol-induced-mitochondrial-bioenergetics-impairments-inflammation-and-oxidative-stress-and-preserves-pancreatic-%C3%AE-cells-function
#18
Catalina Carrasco-Pozo, Kah Ni Tan, Martin Gotteland, Karin Borges
Cholesterol plays an important role in inducing pancreatic β-cell dysfunction, leading to an impaired insulin secretory response to glucose. This study aimed to determine the protective effects of sulforaphane, a natural isothiocyanate Nrf2-inducer, against cholesterol-induced pancreatic β-cells dysfunction, through molecular and cellular mechanisms involving mitochondrial bioenergetics. Sulforaphane prevented cholesterol-induced alterations in the coupling efficiency of mitochondrial respiration, improving ATP turnover and spare capacity, and averted the impairment of the electron flow at complexes I, II, and IV...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28385584/a-study-of-the-clinical-utility-of-a-20-minute-secretin-stimulated-endoscopic-pancreas-function-test-and-performance-according-to-clinical-variables
#19
Luis F Lara, Morihito Takita, James S Burdick, Daniel C DeMarco, Ronnie R Pimentel, Tolga Erim, Marlon F Levy
BACKGROUND & AIMS: Direct pancreas juice testing of bicarbonate, lipase, or trypsin after stimulation by secretin or cholecystokinin (CCK) is used to determine exocrine function, a surrogate for diagnosing chronic pancreatitis (CP). Endoscopic pancreas function tests (ePFT) where a peak bicarbonate concentration (PBC) ≥80 mEq/L in pancreas juice is considered normal are now used more frequently. In this ePFT aspirates start 35 minutes after secretin administration because pancreas output peaks 30 minutes after secretagogue administration...
April 3, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28382868/prooxidant-antioxidant-balance-and-antioxidant-properties-of-thuja-orientalis-l-a-potential-therapeutic-approach-for-diabetes-mellitus
#20
Daryoush Hamidi Alamdari, Malihe Aghasizadeh-Sharbaf, Maryam Mohadjerani, Gordon A Ferns, Amir Avan
BACKGROUND: Diabetes mellitus (DM) is a major health problem with an increasing global prevalence. It is usually associated with an imbalance between pro-oxidant mechanisms and antioxidant defenses, contributing to oxidative-stress, and this leads to an increased susceptibility to endothelial dysfunction, atherosclerosis, insulin-resistance and impaired-pancreatic β-cell function. OBJECTIVE: We have assessed the Prooxidant-antioxidant balance (PAB) and anti-haemolytic effect of Thuja orientalis L using the PAB assay and the analysis of hematological markers...
April 4, 2017: Current Molecular Pharmacology
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