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https://www.readbyqxmd.com/read/28821003/-111-in-dtpa-d-phe-1-asp-0-d-phe-1-octreotide-exhibits-higher-tumor-accumulation-and-lower-renal-radioactivity-than-111-in-dtpa-d-phe-1-octreotide
#1
Nobuhiro Oshima, Hiromichi Akizawa, Hirotake Kitaura, Hidekazu Kawashima, Songji Zhao, Yan Zhao, Ken-Ichi Nishijima, Yoji Kitamura, Yasushi Arano, Yuji Kuge, Kazue Ohkura
INTRODUCTION: (111)In-DTPA-d-Phe(1)-octreotide scintigraphy is an important method of detecting neuroendocrine tumors. We previously reported that a new derivative of (111)In-DTPA-d-Phe(1)-octreotide, (111)In-DTPA-d-Phe(-1)-Asp(0)-d-Phe(1)-octreotide, accomplished the reduction of prolonged renal accumulation of radioactivity. The aim of this study was to evaluate the tumor accumulation of (111)In-DTPA-d-Phe(-1)-Asp(0)-d-Phe(1)-octreotide in vitro and in vivo by comparing it with (111)In-DTPA-d-Phe(1)-octreotide...
July 12, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/28815668/primary-low-grade-neuroendocrine-carcinoma-of-the-skin-an-exceedingly-rare-entity
#2
Tiffany Y Chen, Annie O Morrison, Joe Susa, Clay J Cockerell
Low-grade neuroendocrine tumors (NET), also known as carcinoid tumor, commonly arise from the gastrointestinal and pulmonary tracts, but rarely occur in the skin. Cutaneous NET typically occurs as metastases or high grade primary lesions, called Merkel cell carcinoma. In the few cases described in literature, primary low-grade neuroendocrine carcinomas of the skin (LGNECS) are usually indolent cutaneous nodules, presenting on the head and trunk of elderly patients. LGNECS tumors are histologically similar to its counterparts arising in other anatomic locations...
August 16, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28810643/occludin-downregulation-in-high-glucose-is-regulated-by-sstr2-via-the-vegf-nrp1-akt-signaling-pathway-in-rf-6a-cells
#3
Mengling Li, Shuaiwei Wang, Songjiang Wang, Lei Zhang, Dongdong Wu, Ruisheng Yang, Ailing Ji, Yanzhang Li, Jun Wang
Occludin is a tight junction protein that forms the permeability barrier, which is typically disturbed in ischemic associated diseases. The aim of the present study was to determine whether somatostatin receptor 2 (SSTR2) in RF/6A cells is involved in the modulation of the downregulation of occludin induced by high glucose, and to evaluate the implicated molecules. RF/6A cells were maintained in Dulbecco's modified Eagle medium and treated with 0 or 30 mM D-glucose. SSTR2 agonist octreotide (OCT), OCT with SSTR2 antagonist cycle-somatostatin (c-SOM) and neuropilin 1 (NRP1) inhibitor ATWLPPR, respectively, were administered to RF/6A cells under high glucose conditions...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28776139/catching-the-zebra-clinical-pearls-and-pitfalls-for-the-successful-diagnosis-of-zollinger-ellison-syndrome
#4
REVIEW
Aaron H Mendelson, Mark Donowitz
Zollinger-Ellison syndrome (ZES) results from an ectopic gastrin-secreting tumor leading to peptic ulcer disease, reflux, and chronic diarrhea. While early recognition portends an excellent prognosis with >80% survival at 15 years, symptoms are often nonspecific making the diagnosis difficult to establish. Diagnosis involves a series of tests, including fasting gastrin, gastric pH, chromogranin A, and secretin stimulation. Performing these tests in the correct sequence and at the proper time is essential to avoid inaccurate results...
August 3, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28762950/pasireotide-is-more-effective-than-octreotide-alone-or-combined-with-everolimus-on-human-meningioma-in-vitro
#5
Thomas Graillon, David Romano, Céline Defilles, Christophe Lisbonis, Alexandru Saveanu, Dominique Figarella-Branger, Pierre-Hugues Roche, Stéphane Fuentes, Olivier Chinot, Henry Dufour, Anne Barlier
Pasireotide is a somatostatin analog (SSA) that targets somatostatin receptor subtype 1 (SST1), SST2, SST3, and SST5 with a high affinity. Pasireotide has a better antisecretory effect in acromegaly, Cushing's disease, and neuroendocrine tumors than octreotide. In this study, we compared the effects of pasireotide to those of octreotide in vitro on meningioma primary cell cultures, both alone and in combination with the mTOR inhibitor everolimus. Significant mRNA expression levels of SST1, SST2, and SST5 were observed in 40...
July 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28760239/imaging-of-neuroendocrine-tumors-indications-interpretations-limits-and-pitfalls
#6
REVIEW
Run Yu, Ashley Wachsman
Imaging is critical in the diagnosis, prognosis, and management of neuroendocrine tumors (NETs). NETs share common imaging features, but each type exhibits unique features. Computed tomography scans or MRI of the abdomen is used to assess tumor burden routinely. Functional imaging with octreotide scan or gallium-68 somatostatin analog PET is used selectively to confirm diagnosis and guide therapy. Clinicians and radiologists should be familiar with the indications and interpretations of imaging modalities. Novel functional imaging modalities likely will be developed to detect small NETs, predict prognosis, guide therapeutic choices, and design novel therapies...
September 2017: Endocrinology and Metabolism Clinics of North America
https://www.readbyqxmd.com/read/28752973/-differences-of-therapeutic-efficacy-between-different-kinds-of-somatostatin-analogue-for-primary-hepatocellular-carcinoma
#7
Xiu-He Lü, Chun-Hui Wang, Yan Xie
OBJECTIVE: To explore the effects of SOM230, octreotide and lanreotide on hepatocellular carcinoma cell line Bel-7402 In vivoand In vitro, and to analyze the differences of their therapeutic efficacy with relevant mechanisms. METHODS: At different time points (24, 48, 72 h), the cell counting kit-8 (CCK8) was used to evaluate cell proliferation (drug concentration 1×10(-10)-1×10(-5)mol/L) and the Annexin Ⅴ-FITC/PI staining was used to assess cell apoptosis (drug concentration 1×10(-5)mol/L), while the real-time quantitative PCR was used to detect cellular SSTRexpression changes before and after interventions...
July 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28743120/everolimus-in-combination-with-octreotide-lar-in-first-line-setting-for-patients-with-neuroendocrine-tumors-a-5-years-update
#8
Emilio Bajetta, Laura Catena, Sara Pusceddu, Francesca Spada, Claudio Iannacone, Italo Sarno, Giandomenico Di Menna, Lorenzo Dottorini, Anna Maria Marte
No abstract text is available yet for this article.
July 26, 2017: Neuroendocrinology
https://www.readbyqxmd.com/read/28731075/a-simple-supramolecular-assay-for-drug-detection-in-urine
#9
Silvia Sonzini, Jade A McCune, Peter Ravn, Oren A Scherman, Christopher F van der Walle
A supramolecular colorimetric assay utilising the macrocyclic host cucurbit[7]uril (CB[7]) with a commercial dye molecule, neutral red (NR), was evaluated as a novel method for drug detection in urine of a model therapeutic peptide drug Octreotide.
July 21, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28730139/gastric-hemangioma-treated-with-argon-plasma-coagulation-in-a-newborn-infant
#10
Young Ah Lee, Peter Chun, Eun Ha Hwang, Yeoun Joo Lee, Chang Won Kim, Jae Hong Park
Gastric hemangioma in the neonatal period is a very rare cause of upper gastrointestinal bleeding. We present a case of hemangioma limited to the gastric cavity in a 10-day-old infant. A huge, erythematous mass with bleeding was observed on the lesser curvature side of the upper part of the stomach. Surgical resection was ruled out because the location of the lesion was too close to the gastroesophageal junction. Medical treatment with intravenous H2 blockers, octreotide, packed red blood cell infusions, local epinephrine injection at the lesion site, application of hemoclip, and gel-form embolization of the left gastric artery did not significantly alter the transfusion requirement...
June 2017: Pediatric Gastroenterology, Hepatology & Nutrition
https://www.readbyqxmd.com/read/28729431/sandostatin-lar-therapy-differentially-alters-68-ga-dotatate-uptake-in-normal-tissues-compared-to-primary-tumors-and-metastatic-lesions
#11
Narjess Ayati, Sze Ting Lee, Seyed Rasoul Zakavi, Kunthi Pathmaraj, Loai Qatawneh, Aurora Poon, Andrew Scott
Synthetic somatostatin analogs have been posed as a potential source of error in somatostatin receptor imaging by interfering with tumor detection; however, experimental models and clinical studies have shown a complex mechanism of octreotide effect on tumors. This study aimed to assess whether (68)Ga-DOTATATE uptake differs before and after treatment with long-acting somatostatin analogs. Methods: Thirty patients with intermediate to well differentiated neuroendocrine tumors (NET) who underwent (68)Ga-DOTATATE Positron Emission Tomography/Computed Tomography (PET/CT) scanning before and after receiving long-acting repeatable (LAR) Sandostatin were included in the study...
July 20, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28726183/escalated-dose-somatostatin-analogues-for-antiproliferative-effect-in-gepnets-a-systematic-review
#12
REVIEW
David L Chan, Diego Ferone, Manuela Albertelli, Nick Pavlakis, Eva Segelov, Simron Singh
BACKGROUND/PURPOSE: Somatostatin analogues are the cornerstone of systemic therapy for metastatic well-differentiated gastroenteropancreatic neuroendocrine tumours for both hormonal control and antiproliferative effect. Dose escalation of somatostatin analogues is often utilized in clinical practice, but small studies have yielded mixed results. The aim of this study was to systematically determine the efficacy and safety of escalated-dose somatostatin analogues in the above setting. METHODS: Eligible trials (using more than 30 mg octreotide or 120 mg lanreotide/28 days) were identified from MEDLINE, EMBASE, other databases and conference proceedings...
July 19, 2017: Endocrine
https://www.readbyqxmd.com/read/28723800/effects-of-somatostatin-octreotide-treatment-in-neonates-with-congenital-chylothorax
#13
Rong Yin, Rong Zhang, Jin Wang, Lin Yuan, Liyuan Hu, Siyuan Jiang, Chao Chen, Yun Cao
The influence of somatostatin/octreotide treatment on outcomes of neonates with congenital chylothorax remains controversial. We retrospectively reviewed our experience with somatostatin/octreotide therapy in neonates with this very rare disease.Fourteen neonates with congenital chylothorax who were treated with somatostatin (3.5-7 μg/kg/h, before 2016) or octreotide (1-6 μg/kg/h, after January 2016), along with traditional management between 2013 and 2016, were retrospectively reviewed in this observational study...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28723761/efficacy-of-the-prophylactic-use-of-octreotide-for-the-prevention-of-complications-after-pancreatic-resection-an-updated-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#14
REVIEW
Chunli Wang, Xin Zhao, Shengyi You
BACKGROUND: The use of octreotide prophylaxis in the prevention of complications after pancreatic resection remains controversial. The aim of this systematic review and meta-analysis was to evaluate the efficacy of octreotide prophylactic treatment to prevent complications after pancreatic resection. METHODS: Five databases (PubMed, Medline, SinoMed, Embase, and Cochrane Library) were searched for eligible studies from 1980 to November 2016 with the limitation of human subjects and randomized controlled trials (RCTs)...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28721221/pasireotide-successful-treatment-of-a-sparsely-granulated-tumour-in-a-resistant-case-of-acromegaly
#15
W K M G Amarawardena, K D Liyanarachchi, J D C Newell-Price, R J M Ross, D Iacovazzo, M Debono
The granulation pattern of somatotroph adenomas is well known to be associated with differing clinical and biochemical characteristics, and it has been shown that sparsely granulated tumours respond poorly to commonly used somatostatin receptor ligands (SRLs). We report a challenging case of acromegaly with a sparsely granulated tumour resistant to multiple modalities of treatment, ultimately achieving biochemical control with pasireotide. A 26-year-old lady presented with classical features of acromegaly, which was confirmed by an oral glucose tolerance test...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28719710/conservative-management-of-postoperative-chylous-fistula-with-octreotide-and-peripheral-total-parenteral-nutrition
#16
Jason Y Chan, Eddy W Wong, S K Ng, C Andrew van Hasselt, Alexander C Vlantis
Postoperative chylous fistula after neck dissection is an uncommon complication associated with significant patient morbidity. Octreotide acetate is a somatostatin analogue established in the treatment of chylothorax; however, its utility in the management of cervical chylous fistulae has not been fully evaluated. The investigators hypothesized that chylous fistula can be managed by a combination of octreotide and peripheral total parenteral nutrition (TPN). A retrospective review of cases compiled at our institution from 2009 to 2015 was conducted...
July 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28714296/-68-ga-somatostatin-analogue-pet-ct-analysis-of-costs-and-benefits-in-a-public-hospital-setting
#17
Tatiana Segard, Laurence Mja Morandeau, Elizabeth A Geelhoed, Roslyn J Francis
INTRODUCTION: Between 2009 and 2012, (68) Ga-somatostatin analogue PET-CT progressively replaced (111) In-octreotide scintigraphy for imaging neuroendocrine tumours in WA public hospitals due to published literature demonstrating improved diagnostic accuracy and increased availability. Despite significantly improved sensitivity and specificity, (68) Ga-somatostatin analogue PET is currently unfunded in Australia. This study sought to undertake cost analysis of the two modalities in a public hospital setting and to compare them with regard to patient factors such as imaging time and radiation dose...
July 17, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28706745/acute-esophageal-necrosis-in-an-alcoholic-after-successful-resuscitation-from-cardiac-arrest
#18
Amish Shah, Viveksandeep Thoguluva Chandreskar, Ravi Doobay, Arundeep Kahlon, Ioana Amzuta
INTRODUCTION: We present a patient who presented to the ICU after successful resuscitation from cardiac arrest who was subsequently diagnosed with AEN. CASE PRESENTATION: A 66-year-old female presented after cardiac arrest in which return of spontaneous circulation was achieved within 7 minutes after the initiation of CPR. She was intubated on the scene and found to have coffee ground emesis in her bathroom when found unresponsive. Due to the hemodynamically significant GI bleed, patient was started on IV proton pump inhibitor, octreotide, and levophed...
2017: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/28704340/uptake-in-the-pancreatic-uncinate-process-on-the-111in-octreotide-scintigraphy-how-to-distinguish-physiological-from-pathological-uptake
#19
Amel Ait Boudaoud, Bruno Verges, Jean M Petit, Sopio Tatulashvili, Alexandre Cochet, Olivier Humbert
BACKGROUND: The aim of this study was to assess the relevance of physiological In-octreotide uptake in the head of pancreas and to establish its imaging features in comparison with pathological uptake in patients with neuroendocrine tumors (NET). PATIENTS AND METHODS: We retrospectively reviewed all patients that underwent In-octreotide single-photon emission tomography (SPECT) scintigraphy in our institution. Only patients with an isolated uptake in the head of the pancreas were included...
July 12, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28701683/efficacy-and-safety-of-octreotide-for-the-treatment-of-congenital-hyperinsulinism-a-prospective-open-label-clinical-trial-and-an-observational-study-in-japan-using-a-nationwide-registry
#20
Yuki Hosokawa, Rie Kawakita, Susumu Yokoya, Tsutomu Ogata, Keiichi Ozono, Osamu Arisaka, Yukihiro Hasegawa, Satoshi Kusuda, Michiya Masue, Hironori Nishibori, Toshimi Sairenchi, Tohru Yorifuji
Octreotide, a long-acting somatostatin analog, has been used for treating hypoglycemia caused by congenital hyperinsulinism (CHI). However, octreotide has not been evaluated in clinical trials and has not been approved in any developed country. We aimed to test the efficacy and safety of octreotide for diazoxide-unresponsive CHI through a combination of a single-arm, open-label clinical trial (SCORCH study) and an observational study to collect data on the clinical course of patients treated off-label in Japan (SCORCH registry)...
July 11, 2017: Endocrine Journal
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