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https://www.readbyqxmd.com/read/29349562/the-influence-of-elevated-hormone-levels-on-physiologic-accumulation-of-68ga-dotatoc
#1
Masao Watanabe, Yuji Nakamoto, Sho Koyasu, Takayoshi Ishimori, Akihiro Yasoda, Kaori Togashi
OBJECTIVE: PET/CT imaging with 68Ga-1,4,7,10-tetraazacyclododecane-N,N',N″,N‴-tetraacetic acid-D-Phe1-Tyr3-octreotide (DOTATOC) is useful in patients with neuroendocrine tumors (NETs). Functioning NETs by definition secrete abnormal levels of hormones, causing clinical symptoms. It is known that physiologic accumulation can be seen in some organs, but it remains unknown whether elevated hormone levels can affect the physiologic accumulation pattern of 68Ga-DOTATOC. We aimed to investigate the influence of higher hormone levels on physiologic accumulation of 68Ga-DOTATOC...
January 18, 2018: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/29329158/expression-of-gastrin-family-peptides-in-pancreatic-islets-and-their-role-in-%C3%AE-cell-function-and-survival
#2
Dawood Khan, Srividya Vasu, R Charlotte Moffett, Nigel Irwin, Peter R Flatt
OBJECTIVES: Modulation of cholecystokinin (CCK) receptors has been shown to influence pancreatic endocrine function. METHODS: We assessed the impact of the CCKA and CCKB receptor modulators, (pGlu-Gln)-CCK-8 and gastrin-17, respectively, on β-cell secretory function, proliferation and apoptosis and glucose tolerance, and investigating alterations of CCK and gastrin islet expression in diabetes. RESULTS: Initially, the presence of CCK and gastrin, and expression of their receptors were evidenced in β-cell lines and mouse islets...
January 12, 2018: Pancreas
https://www.readbyqxmd.com/read/29306507/immunogenicity-and-safety-of-a-novel-tetanus-toxoid-conjugated-anti-gastrin-vaccine-in-balb-c-mice
#3
Qing He, Hua Gao, Meng Gao, Shengmei Qi, Kun Yang, Yingqi Zhang, Junzhi Wang
The objective of this study is to determine the immunogenicity and safety of our novel anti-gastrin vaccine that is composed of the common amino-terminal portions of human carboxy-amidated gastrin-17 (G17) and glycine-extended gastrin-17 (gly-G17) as well as the common carboxy-terminal portion of the gastrin precursor progastrin (in a 50:50 mixture) all covalently linked to tetanus toxoid (TT) via peptide spacers. The vaccine, or immunogen, was injected intramuscularly into the legs of BALB/c mice, which produced high serum titres of specific IgG antibodies and IFN-γ in their spleen cells, identifiable by enzyme-linked immunosorbent assay (ELISA) and enzyme-linked immunospot assay (ELISPOT), respectively...
January 3, 2018: Vaccine
https://www.readbyqxmd.com/read/29296993/oral-trivalent-bismuth-ions-decrease-and-trivalent-indium-or-ruthenium-ions-increase-intestinal-tumor-burden-in-apc%C3%AE-14-mice
#4
Marie Laval, Chelsea Dumesny, Mal Eutick, Graham S Baldwin, Kathryn M Marshall
Immature forms of the peptide hormone gastrin have been implicated in the development of colorectal cancer (CRC). The biological activity of glycine-extended gastrin (Ggly) is dependent on the binding of Fe3+ ions in vitro and in vivo. The aim of the present study was to determine the effect of blocking Fe3+ ion binding to Ggly, using Bi3+, In3+ or Ru3+ ions, on the development of intestinal tumors in APCΔ14/+ mice. APCΔ14/+ mice were treated orally with Bi3+, In3+ or Ru3+ ions for up to 60 days, serum trace metals were analyzed by inductively coupled plasma mass spectrometry, and the incidence and size of intestinal tumors were assessed...
January 3, 2018: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/29238236/pro-gastrin-releasing-peptide-progrp-as-a-biomarker-in-small-cell-lung-cancer-diagnosis-monitoring-and-evaluation-of-treatment-response
#5
REVIEW
Ewa Wojcik, Jan Kanty Kulpa
Lung cancer belongs to malignant tumors that possess the highest rates of morbidity and mortality in the world. A number of morphological, biological and clinical features justify the distinction of small-cell carcinoma with respect to the other histological types of lung cancer. The predominant neuroendocrine phenotype is critical for the selection of biomarkers used in diagnostics, monitoring and evaluation of treatment response; early onset relapses in patients with small-cell lung cancer (SCLC) and the evaluation of their prognosis...
2017: Lung Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/29217908/a-novel-method-for-pain-relief-in-chronic-pancreatitis-an-old-drug-in-a-new-pack-a-controlled-study
#6
Aswini Kumar Pujahari
Most of pain-relieving agents in chronic pancreatitis are nonspecific and unpredictable. Omeprazole induces hypergastrinemia due to reduced gastric acidity. Raised serum gastrin, in turn, modulates to reduce secretin level. Secretin is responsible for secretion of almost 80 % bicarbonate-rich pancreatic juice from the ductular epithelium without affecting enzyme output. It is a prospective randomized study in patients with CT-confirmed chronic pancreatitis. The control group got the standard care and 60 mg of omeprazole twice daily was added to the test group...
December 2017: Indian Journal of Surgery
https://www.readbyqxmd.com/read/29208023/comparison-of-2002-aecg-and-2016-acr-eular-classification-criteria-and-added-value-of-salivary-gland-ultrasonography-in-a-patient-cohort-with-suspected-primary-sj%C3%A3-gren-s-syndrome
#7
Maëlle Le Goff, Divi Cornec, Sandrine Jousse-Joulin, Dewi Guellec, Sebastian Costa, Thierry Marhadour, Rozenn Le Berre, Steeve Genestet, Béatrice Cochener, Sylvie Boisrame-Gastrin, Yves Renaudineau, Jacques-Olivier Pers, Alain Saraux, Valérie Devauchelle-Pensec
BACKGROUND: The objective was to evaluate concordance between 2002 American-European Consensus Group (AECG) and 2016 American College of Rheumatology (ACR)/European League Against Rheumatism (EULAR) classification criteria for primary Sjögren's syndrome (pSS) and to assess how salivary gland ultrasonography (SGUS) might improve the classification of patients. METHODS: Patients with suspected pSS underwent a standardised evaluation, including SGUS, at inclusion into the single-centre Brittany DIApSS cohort...
December 6, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29207043/naringenin-induces-laxative-effects-by-upregulating-the-expression-levels-of-c-kit-and-scf-as-well-as-those-of-aquaporin-3-in-mice-with-loperamide-induced-constipation
#8
Jianqiao Yin, Yichao Liang, Dalu Wang, Zhaopeng Yan, Hongzhuan Yin, Di Wu, Qi Su
Constipation is a common affliction which causes discomfort and affects the quality of life of affected individuals. Naringenin (NAR), a natural flavonoid widely found in citrus fruits and tomatoes, has been reported to exhibit various pharmacological effects, such as anti-inflammatory, anti-atherogenic, anti-mutagenic, hepatoprotective and anticancer effects. Increasing evidence has indicated that NAR has potential for use in the treatment of constipation. Thus, the aim of this study was to evaluate the laxative effects of NAR in mice with loperamide-induced (Lop-induced) constipation...
December 1, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29203413/targeted-magnetic-intra-lysosomal-hyperthermia-produces-lysosomal-reactive-oxygen-species-and-causes-caspase-1-dependent-cell-death
#9
Pascal Clerc, Pauline Jeanjean, Nicolas Halalli, Michel Gougeon, Bernard Pipy, Julian Carrey, Daniel Fourmy, Véronique Gigoux
Therapeutic strategies using drugs which cause Lysosomal Cell Death have been proposed for eradication of resistant cancer cells. In this context, nanotherapy based on Magnetic Intra-Lysosomal Hyperthermia (MILH) generated by magnetic nanoparticles (MNPs) that are grafted with ligands of receptors overexpressed in tumors appears to be a very promising therapeutic option. However, mechanisms whereby MILH induces cell death are still elusive. Herein, using Gastrin-grafted MNPs specifically delivered to lysosomes of tumor cells from different cancers, we provide evidences that MILH causes cell death through a non-apoptotic signaling pathway...
December 1, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29196436/vonoprazan-prevents-low-dose-aspirin-associated-ulcer-recurrence-randomised-phase-3-study
#10
Takashi Kawai, Kazunori Oda, Nobuo Funao, Akira Nishimura, Yasushi Matsumoto, Yuji Mizokami, Kiyoshi Ashida, Kentaro Sugano
OBJECTIVE: Compare efficacy and safety of vonoprazan and lansoprazole for secondary prevention of low-dose aspirin (LDA)-associated peptic ulcers in a 24-week study and long-term extension therapy in separate study. DESIGN: Double-blind, randomised, non-inferiority study; single-blind extension study at 104 Japanese sites, including 621 patients (439 in extension) with a history of peptic ulcers who required long-term LDA therapy. Randomised (1:1:1, computer generated) patients received lansoprazole 15 mg (n=217), vonoprazan 10 mg (n=202) or vonoprazan 20 mg (n=202) once daily for 24 weeks (double blind) and ≤2 years (extension)...
December 1, 2017: Gut
https://www.readbyqxmd.com/read/29191578/gastrin-releasing-peptide-attenuates-fear-memory-reconsolidation
#11
A Murkar, P Kent, C Cayer, J James, Z Merali
BACKGROUND: Gastrin Releasing Peptide (GRP) may play a role in fear learning. The GRP Receptor is expressed in the basolateral amygdala and hippocampus, and central administration of GRP mediates fear learning. The effects of GRP on reconsolidation, however, have been minimally explored. Reconsolidation, the process by which formed memories are rendered labile following recall, provides a window of opportunity for pharmacological intervention. Although evidence suggests the window of opportunity to alter reactivated consolidation memory can be as long as 6h, shorter intervals have not been extensively investigated...
November 27, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/29190137/high-risk-gastric-pathology-and-prevalent-autoimmune-diseases-in-patients-with-pernicious-anemia
#12
Jing W Hughes, Brian D Muegge, Garry S Tobin, Marina Litvin, Lulu Sun, Jose B Saenz, C Prakash Gyawali, Janet B McGill
OBJECTIVE: Pernicious anemia (PA) develops from atrophic gastritis due to autoimmune destruction of parietal cells and results in achlorhydria, vitamin B12 and iron deficiencies, anemia, neurologic deficits, and premalignant and malignant stomach lesions. We report the presentation, diagnosis and gastric complications of PA in patients from an endocrinology practice. METHODS: Thirty-four patients (31 female, 3 male) with PA who underwent esophagogastroduodenoscopy (EGD) or gastrectomy were identified...
November 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29188801/pharmacokinetic-and-pharmacodynamic-evidence-for-developing-an-oral-formulation-of-octreotide-against-gastric-mucosal-injury
#13
Xi-Nuo Li, Tai Rao, Yang-Fan Xu, Kang-Rui Hu, Zhang-Pei Zhu, Hao-Feng Li, Dian Kang, Yu-Hao Shao, Bo-Yu Shen, Xiao-Xi Yin, Lin Xie, Guang-Ji Wang, Yan Liang
Among the somatostatin analogues, octreotide (OCT) is the most commonly used in clinic via intravenous or subcutaneous injection to treat various diseases caused by increased secretion of growth hormone, gastrin or insulin. In order to assesse the feasibility of developing oral formulations of OCT, we conducted systematical pharmacokinetic and pharmacodynamic analyses of OCT in several animal models. The pharmacokinetic studies in rats showed that intragastric administration of OCT had extremely low bioavailability (<0...
November 30, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29181825/a-primary-hepatic-gastrinoma-accompanied-by-hyperplasia-of-multi-nodular-brunner-s-glands
#14
Takaomi Hagi, Yohei Hosoda, Izumi Komoto, Shinji Uemoto, Susumu Hijioka, Yoshiro Taki, Kazuhiro Nishiyama, Masayuki Imamura
BACKGROUND: Primary hepatic gastrinoma causing severe ulcerogenic syndrome is extremely rare. Herein, we report a case of primary hepatic gastrinoma accompanied by hyperplasia of multi-nodular Brunner's glands in a patient who instead, preoperatively, was suspected of having multiple duodenal gastrinomas and hepatic metastasis. CASE PRESENTATION: A 57-year-old woman consulted a clinic complaining of melena, intermittent abdominal pain, diarrhea, and vomiting which had persisted for about 3 years...
November 28, 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/29181158/serum-pepsinogen-and-gastrin-17-as-potential-biomarkers-for-pre-malignant-lesions-in-the-gastric-corpus
#15
Tan Han Loong, Ngiu Chai Soon, Nik Ritza Kosai Nik Mahmud, Jeevinesh Naidu, Rafiz Abdul Rani, Nazefah Abdul Hamid, Marjanu Hikmah Elias, Isa Mohamed Rose, Azmi Tamil, Norfilza M Mokhtar, Raja Affendi Raja Ali
There is a lack of non-invasive screening modalities to diagnose chronic atrophic gastritis (CAG) and intestinal metaplasia (IM). Thus, the aim of the present study was to determine the sensitivity and specificity of serum pepsinogen I (PGI), PGI:II, the PGI:II ratio and gastrin-17 (G-17) in diagnosing CAG and IM, and the correlations between these serum biomarkers and pre-malignant gastric lesions. A cross-sectional study of 72 patients (82% of the calculated sample size) who underwent oesophageal-gastro-duodenoscopy for dyspepsia was performed in the present study...
November 2017: Biomedical Reports
https://www.readbyqxmd.com/read/29180139/combined-gastrin-releasing-peptide-29-and-glucagon-like-peptide-1-reduce-body-weight-more-than-each-individual-peptide-in-diet-induced-obese-male-rats
#16
Thaer R Mhalhal, Martha C Washington, Kayla D Newman, John C Heath, Ayman I Sayegh
To test the hypothesis that gastrin releasing peptide-29 (GRP-29) combined with glucagon like peptide-1 (7-36) (GLP-1 (7-36)) reduce body weight (BW) more than each of the peptides given individually, we infused the two peptides (0.5nmol/kg each) in the aorta of free feeding, diet-induced obese (DIO) male Sprague Dawley rats once daily for 25days and measured BW. We found that GRP-29 and GLP-1 reduce BW, GRP-29 reduced it more than GLP-1 and GRP-29+GLP-1 reduce BW more than each peptide given alone. This reduction was accompanied by decrease 24-hour food intake (normal rat chow), meal size (MS), duration of first meal and number of meals, and increase latency to the first meal, intermeal interval (IMI) and satiety ratio (IMI/MS, amount of food consumed per a unit of time)...
November 21, 2017: Neuropeptides
https://www.readbyqxmd.com/read/29168078/the-effect-of-hypergastrinemia-following-sleeve-gastrectomy-and-pantoprazole-on-type-2-diabetes-mellitus-and-beta-cell-mass-in-goto-kakizaki-rats
#17
E Grong, C Nord, I B Arbo, M Eriksson, B E Kulseng, U Ahlgren, R Mårvik
PURPOSE: Metabolic surgery alters the secretion of gastrointestinal hormones that influence glycemic control. Elevated gastrin has been suggested to benefit patients with type 2 diabetes and has been reported following sleeve gastrectomy in rats. The present study compares the effect of hypergastrinemia following sleeve gastrectomy with proton-pump inhibitor therapy on glycemic control and beta-cell mass in lean, diabetic animals. METHODS: Thirty-three diabetic Goto-Kakizaki rats were randomized into pantoprazole + sham operation (GK-PPI), sleeve gastrectomy (GK-SG) and vehicle + sham operation (GK-V)...
November 22, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29155309/prognostic-utility-of-total-68ga-dotatate-avid-tumor-volume-in-patients-with-neuroendocrine-tumors
#18
Amit Tirosh, Georgios Z Papadakis, Corina Millo, Dima Hammoud, Samira M Sadowski, Peter Herscovitch, Karel Pacak, Stephen J Marx, Lily Yang, Pavel Nockel, Jasmine Shell, Patience Green, Xavier M Keutgen, Dhaval Patel, Naris Nilubol, Electron Kebebew
BACKGROUND & AIMS: Survival times vary among patients with neuroendocrine tumors (NETs)-even among those with the same site, stage, and grade of primary tumor. This makes it difficult to select treatment for patients with unresectable NETs, because some patients can survive decades without treatment. 68Gallium-DOTATATE positron emission tomography with computed tomography (68Ga-DOTATATE PET/CT) is a sensitive imaging technique for detection of NETs. We investigated the prognostic accuracy of 68Ga-DOTATATE PET/CT analysis of tumor volume in patients with NETs...
November 16, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29154145/evaluation-of-a-novel-grpr-antagonist-for-prostate-cancer-pet-imaging-64-cu-dotha2-peg-rm26
#19
Nematallah Mansour, Michel Paquette, Samia Ait-Mohand, Véronique Dumulon-Perreault, Brigitte Guérin
INTRODUCTION: Gastrin releasing peptide receptors (GRPRs) are significantly over-expressed on a large proportion of prostate cancers making them prime candidates for receptor-mediated nuclear imaging by PET. Recently, we synthesized a novel bifunctional chelator (BFC) bearing hydroxamic acid arms (DOTHA2). Here we investigated the potential of a novel DOTHA2-conjugated, (64)Cu-radiolabeled GRPR peptide antagonist, [D-Phe(6)-Sta(13)-Leu(14)-NH2]bombesin(6-14) (DOTHA2-PEG-RM26) to visualize prostate tumors by PET imaging...
October 23, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/29145241/the-prognostic-value-of-the-serum-neuron-specific-enolase-and-lactate-dehydrogenase-in-small-cell-lung-cancer-patients-receiving-first-line-platinum-based-chemotherapy
#20
Xiaofan Liu, Weiming Zhang, Wen Yin, Yang Xiao, Changzhi Zhou, Yi Hu, Shuang Geng
The aim of this study was to investigate the associations of serum levels of neuron-specific enolase (NSE), pro-gastrin releasing peptide (ProGRP), and lactate dehydrogenase (LDH) with clinical response and survival in small cell lung cancer (SCLC) patients receiving first-line platinum-based chemotherapy.One hundred thirty-six patients with SCLC were recruited in this study. All the patients received first-line platinum-based chemotherapy. Clinical efficacy was assessed according to Response Evaluation Criteria in Solid Tumors v1...
November 2017: Medicine (Baltimore)
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