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https://www.readbyqxmd.com/read/28412224/mechanism-based-selection-of-stabilization-strategy-for-amorphous-formulations-insights-into-crystallization-pathways
#1
Khadijah Edueng, Denny Mahlin, Per Larsson, Christel A S Bergström
We developed a step-by-step experimental protocol using differential scanning calorimetry (DSC), dynamic vapour sorption (DVS), polarized light microscopy (PLM) and a small-scale dissolution apparatus (μDISS Profiler) to investigate the mechanism (solid-to-solid or solution-mediated) by which crystallization of amorphous drugs occurs upon dissolution. This protocol then guided how to stabilize the amorphous formulation. Indapamide, metolazone, glibenclamide and glipizide were selected as model drugs and HPMC (Pharmacoat 606) and PVP (K30) as stabilizing polymers...
April 12, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28386752/influence-of-single-and-multi-dose-treatment-of-glipizide-on-pharmacokinetics-and-pharmacodynamics-of-irbesartan-in-normal-and-hypertensive-rats
#2
Adepu Anusha, Dudhipala Narendar, Boini Krishna Murthy, Puchchakayala Goverdhan
PURPOSE: The present study was carried out to investigate the pharmacokinetic and pharmacodynamic drug interaction of irbesartan with glipizide after single and multi dose treatment in normal and hypertensive rat models to evaluate the safety and effectiveness of the combination. METHODS: The study was conducted on normal and 10% fructose solution induced hypertensive rats. Irbesartan and glipizide were administered orally for 7 days and on 8th day blood samples were collected for 12 h at regular time intervals from irbesartan alone and in combination with glipizide treated groups...
April 6, 2017: High Blood Pressure & Cardiovascular Prevention: the Official Journal of the Italian Society of Hypertension
https://www.readbyqxmd.com/read/28377316/preparation-and-investigation-of-controlled-release-glipizide-novel-oral-device-with-three-dimensional-printing
#3
Qijun Li, Haoyang Wen, Danyang Jia, Xiaoying Guan, Hao Pan, Yue Yang, Shihui Yu, Zhihong Zhu, Rongwu Xiang, Weisan Pan
The purpose of this study was to explore the feasibility of combining fused deposition modeling (FDM) 3D printing technology with hot melt extrusion (HME) to fabricate a novel controlled-release drug delivery device. Glipizide used in the treatment of diabetes was selected as model drug, and was successfully loaded into commercial polyvinyl alcohol (PVA) filaments by HME method. The drug-loaded filaments were printed through a dual-nozzle 3D printer, and finally formed a double-chamber device composed by a tablet embedded within a larger tablet (DuoTablet), each chamber contains different contents of glipizide...
April 2, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28323942/incretin-therapies-do-not-expand-%C3%AE-cell-mass-or-alter-pancreatic-histology-in-young-male-mice
#4
Aaron R Cox, Carol J Lam, Matthew M Rankin, Jacqueline S Rios, Julia Chavez, Claire W Bonnyman, Kourtney B King, Roger A Wells, Deepti Anthony, Justin X Tu, Jenny J Kim, Changhong Li, Jake A Kushner
The impact of incretins upon pancreatic β-cell expansion remains extremely controversial. Multiple studies indicate that incretin-based therapies can increase β-cell proliferation, and incretins have been hypothesized to expand β-cell mass. However, considerable disagreement exists on whether incretins actually increase β-cell mass. Moreover, some reports indicate that incretins may cause metaplastic changes in pancreatic histology. To resolve these questions we treated a large cohort of mice with incretin-based therapies and carried out a rigorous analysis of β-cell turnover and pancreatic histology using high-throughput imaging...
March 8, 2017: Endocrinology
https://www.readbyqxmd.com/read/28284082/simultaneous-determination-of-glipizide-and-its-four-hydroxylated-metabolites-in-human-urine-using-lc-ms-ms-and-its-application-in-urinary-phenotype-study
#5
Bo Tan, Aidong Yang, Weian Yuan, Yue Li, Lei Jiang, Jian Jiang, Furong Qiu
Cytochrome P450 (CYP) 2C9 and CYP2C19 genetic mutant could influence the plasma concentration of glipizide in human subjects, which refers to glipizide safety and adverse effects in clinic practice. A further study to investigate the relationship of the concentrations between glipizide and its metabolites in human with different CYP mutants was valuable. We firstly develop a validated liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for simultaneous quantification of glipizide and its hydroxylated metabolites in human urine...
May 30, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28272693/glipizide-blocks-renal-interstitial-fibrosis-by-inhibiting-akt-signaling-pathway
#6
G Yang, G Zeng, J-P Wu, O Jiang, Y-B Zeng, S-J Huang, J-J Huang, D-Q Wu
OBJECTIVE: Diabetes affects the renal function at a certain stage. Oral medication glipizide plays a hypoglycemic effect mainly through releasing insulin, while more insulin is derived from islet β cells. It is still controversy whether antidiabetics. This study mainly intends to investigate the role of glipizide in inhibiting renal interstitial fibrosis. MATERIALS AND METHODS: A total of 93 SD rats were purchased from Guangdong animal monitoring and established unilateral ureteral obstruction (UUO) model to simulate renal interstitial fibrosis...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28238223/glucose-lowering-agents-for-treating-pre-existing-and-new-onset-diabetes-in-kidney-transplant-recipients
#7
REVIEW
Clement Lo, Min Jun, Sunil V Badve, Helen Pilmore, Sarah L White, Carmel Hawley, Alan Cass, Vlado Perkovic, Sophia Zoungas
BACKGROUND: Kidney transplantation is the preferred form of kidney replacement therapy for patients with end-stage kidney disease (ESKD) and is often complicated by worsening or new-onset diabetes. Management of hyperglycaemia is important to reduce post-transplant and diabetes-related complications. The safety and efficacy of glucose-lowering agents after kidney transplantation is largely unknown. OBJECTIVES: To evaluate the efficacy and safety of pharmacological interventions for lowering glucose levels in patients who have undergone kidney transplantation and have diabetes...
February 27, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28176212/stable-co-crystals-of-glipizide-with-enhanced-dissolution-profiles-preparation-and-characterization
#8
Narendra Kumar Pandey, Hans Raj Sehal, Varun Garg, Tejasvi Gaur, Bimlesh Kumar, Sachin Kumar Singh, Monica Gulati, K Gowthamarajan, Palak Bawa, Sarvi Yadav Rajesh, Parth Sharma, Rakesh Narang
Present study deciphers preparation of co-crystals of lipophilic glipizide by using four different acids, oxalic, malonic, stearic, and benzoic acids, in order to achieve enhanced solubility and dissolution along with stability. All co-crystals were prepared by dissolving drug and individual acids in the ratio of 1:0.5 in acetonitrile at 60-70°C for 15 min, followed by cooling at room temperature for 24 h. FT-IR spectroscopy revealed no molecular interaction between acids and drug as the internal structure and their geometric configurations remain unchanged...
February 7, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28169935/biomedical-informatics-approaches-to-identifying-drug-drug-interactions-application-to-insulin-secretagogues
#9
Xu Han, ChienWei Chiang, Charles E Leonard, Warren B Bilker, Colleen M Brensinger, Lang Li, Sean Hennessy
BACKGROUND: Drug-drug interactions with insulin secretagogues are associated with increased risk of serious hypoglycemia in patients with type 2 diabetes. We aimed to systematically screen for drugs that interact with the five most commonly used secretagogues-glipizide, glyburide, glimepiride, repaglinide, and nateglinide-to cause serious hypoglycemia. METHODS: We screened 400 drugs frequently coprescribed with the secretagogues as candidate interacting precipitants...
May 2017: Epidemiology
https://www.readbyqxmd.com/read/28111849/sulfonylurea-challenge-test-in-subjects-diagnosed-with-type-1-diabetes-mellitus
#10
Maria S Remedi, Mareen Thomas, Colin G Nichols, Bess A Marshall
BACKGROUND: Patients with early onset diabetes because of defects in glucose-stimulated insulin secretion (GSIS) may respond better to sulfonylureas than insulin treatment. Such patients include those with monogenic disorders, who can be differentiated from autoimmune type 1 diabetes mellitus (T1DM) by genetic testing. Genetic testing is expensive and unknown defects in GSIS would not be diagnosed. AIMS: We propose a sulfonylurea challenge test to identify patients who have been clinically diagnosed with T1DM, but those who maintain a preferentially sulfonylurea-responsive insulin secretion...
January 23, 2017: Pediatric Diabetes
https://www.readbyqxmd.com/read/28097882/antidiabetic-agents-and-cardiovascular-outcomes-in-patients-with-heart-diseases
#11
Judy W M Cheng, Hisham A Badreldin, Dhiren K Patel, Snehal H Bhatt
INTRODUCTION: This article reviews evidence of the benefits and risk of antidiabetic agents in cardiovascular (CV) outcomes, with a focus on medications approved by the FDA since 2008. STUDY SELECTION: Peer-reviewed articles were identified from MEDLINE and Current Content databases (both 1966 to 1 October 2016) using the search terms insulin, metformin, rosiglitazone, pioglitazone, glyburide, glipizide, glimepiride, acarbose, miglitol, albiglutide, exenatide, liraglutide, lixisenatide, dulaglutide, pramlintide, meglitinide, alogliptin, linagliptin, saxagliptin, sitagliptin, canagliflozin, dapagliflozin, empagliflozin, colesevalam, bromocriptine, mortality, myocardial infarction (MI), heart failure (HF), and stroke...
February 15, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28093504/a-model-of-type-2-diabetes-in-the-guinea-pig-using-sequential-diet-induced-glucose-intolerance-and-streptozotocin-treatment
#12
Brendan K Podell, David F Ackart, Michael A Richardson, James E DiLisio, Bruce Pulford, Randall J Basaraba
Type 2 diabetes is a leading cause of morbidity and mortality among noncommunicable diseases, and additional animal models that more closely replicate the pathogenesis of human type 2 diabetes are needed. The goal of this study was to develop a model of type 2 diabetes in guinea pigs, in which diet-induced glucose intolerance precedes β-cell cytotoxicity, two processes that are crucial to the development of human type 2 diabetes. Guinea pigs developed impaired glucose tolerance after 8 weeks of feeding on a high-fat, high-carbohydrate diet, as determined by oral glucose challenge...
February 1, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28057168/evaluation-and-optimization-of-blood-micro-sampling-methods-serial-sampling-in-a-cross-over-design-from-an-individual-mouse
#13
Nita J Patel, Enaksha Wickremsinhe, Yu-Hua Hui, Alexandar Barr, Nicholas Masterson, Kenneth Ruterbories, Jennifer Weller, Jennifer Hanes, Tom Kern, Everett Perkins
PURPOSE: Current practices applied to mouse pharmacokinetic (PK) studies often use large numbers of animals with sporadic or composite sampling that inadequately describe PK profiles.  The purpose of this work was to evaluate and optimize blood microsampling techniques coupled with dried blood spot (DBS) and LC-MS/MS analysis to generate reliable PK data in mice.  In addition, the feasibility of cross-over designs was assessed and recommendations are presented. METHODS: The work describes a comprehensive evaluation of five blood microsampling techniques (tail clip, tail vein with needle hub, submandibular, retro-orbital, and saphenous bleeding) in CD-1 mice...
October 2016: Journal of Pharmacy & Pharmaceutical Sciences: a Publication of the Canadian Society for Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28056429/weight-change-after-initiation-of-oral-hypoglycemic-monotherapy-for-diabetes-predicts-5-year-mortality-an-observational-study
#14
Beverly M Kocarnik, Kathryn P Moore, Nicholas L Smith, Edward J Boyko
PURPOSE: To investigate whether weight change in the first year after initiating an oral hypoglycemic agent (OHA) for type 2 diabetes treatment is associated with mortality in a national cohort. PROCEDURES: We prospectively followed Veterans Health Administration patients with type 2 diabetes initiating treatment with an OHA and not receiving any other diabetes pharmacotherapy for at least one year. Information on OHAs, weight, co-morbidities, other medications, demographics, and laboratory measurements was obtained from electronic medical records...
January 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/27967230/pathophysiology-and-management-of-hypoglycemiain-end-stage-renal-disease-patients-a-review
#15
Roma Y Gianchandani, Shristi Neupane, Jennifer J Iyengar, Michael Heung
OBJECTIVE: This review focuses on hypoglycemia in patients with end-stage renal disease (ESRD). It discusses the pathophysiology of glucose metabolism in the kidney, the impact of dialysis on glucose and insulin metabolism, and the challenges of glucose monitoring in ESRD. The clinical relevance of these changes is reviewed in relation to altered blood glucose targets and modification of antidiabetes therapy to prevent hypoglycemia. Based on current data and guidelines, recommendations for the outpatient and inpatient setting are provided for diabetes management in ESRD...
March 2017: Endocrine Practice
https://www.readbyqxmd.com/read/27863986/microfluidics-based-manufacture-of-liposomes-simultaneously-entrapping-hydrophilic-and-lipophilic-drugs
#16
Sameer Joshi, Maryam T Hussain, Carla B Roces, Giulia Anderluzzi, Elisabeth Kastner, Stefano Salmaso, Daniel J Kirby, Yvonne Perrie
Despite the substantial body of research investigating the use of liposomes, niosomes and other bilayer vesicles for drug delivery, the translation of these systems into licensed products remains limited. Indeed, recent shortages in the supply of liposomal products demonstrate the need for new scalable production methods for liposomes. Therefore, the aim of our research has been to consider the application of microfluidics in the manufacture of liposomes containing either or both a water soluble and a lipid soluble drug to promote co-delivery of drugs...
September 20, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27863660/microfluidics-based-manufacture-of-liposomes-simultaneously-entrapping-hydrophilic-and-lipophilic-drugs
#17
Sameer Joshi, Maryam T Hussain, Carla B Roces, Giulia Anderluzzi, Elisabeth Kastner, Stefano Salmaso, Daniel J Kirby, Yvonne Perrie
Despite the substantial body of research investigating the use of liposomes, niosomes and other bilayer vesicles for drug delivery, the translation of these systems into licensed products remains limited. Indeed, recent shortages in the supply of liposomal products demonstrate the need for new scalable production methods for liposomes. Therefore, the aim of our research has been to consider the application of microfluidics in the manufacture of liposomes containing either or both a water soluble and a lipid soluble drug to promote co-delivery of drugs...
November 30, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27796819/sulfonylurea-poisoning-in-a-healthy-toddler
#18
Suresh Kumar, Abhijit Choudhary, Mahammad Ali, Vipul Gupta, Jayashree Muralidharan, Sunit C Singhi
Ingestion of sulfonylureas is life-threatening in toddlers and children due to its strong and prolonged hypoglycemic effect. The authors present a 15-mo-old boy with accidental ingestion of Glipizide who presented with encephalopathy, seizure and severe hypoglycemia. The management included parenteral dextrose and octreotide administration to maintain euglycemia, followed by complete neurological recovery within 24 h. Sulphonylurea intoxication should be considered in previously healthy toddlers and children presenting with hypoglycemia especially if any caregiver is on sulfonylurea drugs...
February 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/27765361/aralia-elata-var-mandshurica-rupr-maxim-j-wen-an-overview-of-pharmacological-studies
#19
REVIEW
Alexander N Shikov, Olga N Pozharitskaya, Valery G Makarov
PURPOSE: Aralia elata var. mandshurica (Rupr. & Maxim.) J.Wen syn. A. mandshurica Rupr. & Maxim is evaluated for its medicinal application. The aim of this study is to analyze pharmacological studies on A. elata var. mandshurica published until December 2015. METHODS: The information regarding the chemistry, safety, effectiveness, and pharmacological and clinical effects of A. elata was systematically collected from the scientific literature through library catalogs; online services such as E-library...
November 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27691959/treatment-of-diabetes-mellitus-in-a-golden-lion-tamarin-leontopithecus-rosalia-with-the-glucagon-like-peptide-1-mimetic-exenatide
#20
James G Johnson, Jennifer N Langan, Chen Gilor
An 8-yr-old male golden lion tamarin ( Leontopithecus rosalia ) was diagnosed with diabetes mellitus based on hyperglycemia and persistent glycosuria. Initial treatment consisted of the oral antihyperglycemic medications glipizide and metformin that resulted in decreased blood glucose concentrations; however, marked glycosuria persisted. Insufficient improvement on oral antihyperglycemic therapy and poor feasibility of daily subcutaneous insulin therapy led to an investigation into an alternative therapy with extended-release exenatide, a glucagon-like peptide-1 (GLP-1) mimetic, at a dosage of 0...
September 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
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