Read by QxMD icon Read


Charles E Norton, Steven S Segal
The sensory neurotransmitter calcitonin gene-related peptide (CGRP) is associated with vasodilation of systemic arteries through activation of ATP-sensitive potassium channels (KATP) in smooth muscle cells (SMCs), however its effects on endothelial cell (EC) membrane potential (Vm) are unresolved. In pulmonary arteries (PAs) of C57BL/6J mice, we questioned whether CGRP would hyperpolarize ECs as well as SMCs. Intact PAs were isolated and immunostained for CGRP to confirm sensory innervation; vessel segments (length, 1-2 mm; diameter ∼150 µm) with intact or denuded endothelium were cannulated and pressurized to 16 cm H2O at 37{degree sign}C...
March 15, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
Yasmin S Mohamed, Lamiaa A Ahmed, Hesham A Salem, Azza M Agha
Liver Fibrosis is one of the most serious conditions affecting patients worldwide. In the present study, the role of nitric oxide and KATP channel was investigated for the first time in the possible protection mediated by nicorandil in bile duct ligation-induced liver fibrosis in rats. Nicorandil (3mg/kg/day) was given orally 24 h after bile duct ligation for 14 days till the end of the experiment. Nicorandil group showed marked improvement in liver function tests, hepatic oxidative stress and inflammatory markers as well as inducible and endothelial nitric oxide synthase protein expression...
March 6, 2018: Biochemical Pharmacology
Md Shafiullah Shajib, Ridwan B Rashid, Long C Ming, Shanta Islam, Md Moklesur R Sarker, Lutfun Nahar, Satyajit D Sarker, Bidyut K Datta, Mohammad A Rashid
Polymethoxylavones (PMFs) are known to exhibit significant anti-inflammatory and neuroprotective properties. Nicotiana plumbaginifolia , an annual Bangladeshi herb, is rich in polymethoxyflavones that possess significant analgesic and anxiolytic activities. The present study aimed to determine the antinociceptive and neuropharmacological activities of polyoxygenated flavonoids namely- 3,3',5,6,7,8-hexamethoxy-4',5'-methylenedioxyflavone ( 1 ), 3,3',4',5',5,6,7,8-octamethoxyflavone (exoticin) ( 2 ), 6,7,4',5'-dimethylenedioxy-3,5,3'-trimethoxyflavone ( 3 ), and 3,3',4',5,5',8-hexamethoxy-6,7-methylenedioxyflavone ( 4 ), isolated and identified from N...
2018: Frontiers in Pharmacology
Venugopala Rao Konda, Madhavi Eerike, R Prasanth Chary, Ruckmani Arunachalam, Venkata Ramana Yeddula, Vinayak Meti, T Sobita Devi
OBJECTIVES: The objectives of the study were to assess evaluate the effects of aluminum chloride (AlCl3 ) on blood glucose and lipid levels in normal, diabetic, and glibenclamide-treated diabetic rats. MATERIALS AND METHODS: Forty-two male Wistar rats were divided into seven groups of six each. Group I was normal control, Groups II and III were given AlCl3 50 and 100 mg/kg, and Group IV to VII were administered with streptozotocin (STZ) (60 mg/kg) intraperitoneally...
September 2017: Indian Journal of Pharmacology
Masakazu Kotoda, Tadahiko Ishiyama, Kazuha Mitsui, Sohei Hishiyama, Takashi Matsukawa
PURPOSE: Nicorandil has dual properties and acts as a nitric oxide donor and an ATP-sensitive potassium (KATP ) channel opener. Considering its pharmacological profile, nicorandil might exert protective effects on the brain as well as on the heart. The purpose of this study was to directly evaluate the effect of nicorandil on cerebral blood flow (CBF) in mice using a transcranial Doppler method. METHODS: Under general anesthesia, the nicorandil groups received a single-bolus intraperitoneal injection of the respective doses of nicorandil (1, 5, or 10 mg/kg), while the control group received vehicle only...
March 5, 2018: Journal of Anesthesia
Nick Jeffery, C Elizabeth Boudreau, Megan Konarik, Travis Mays, Virginia Fajt
Background: Glyburide (also known as glibenclamide) is effective in reducing the severity of tissue destruction and improving functional outcome after experimental spinal cord injury in rodents and so has promise as a therapy in humans. There are many important differences between spinal cord injury in experimental animals and in human clinical cases, making it difficult to introduce new therapies into clinical practice. Spinal cord injury is also common in pet dogs and requires new effective therapies, meaning that they can act as a translational model for the human condition while also deriving direct benefits from such research...
2018: PeerJ
Hazuki Yonashiro, Kenjirou Higashi, Chikako Morikawa, Keisuke Ueda, Tsutomu Itoh, Masataka Ito, Hyuma Masu, Shuji Noguchi, Kunikazu Moribe
The morphology and stability of amorphous nanoparticles of glibenclamide (GLB) prepared by the antisolvent method using different methods of adding hypromellose (HPMC) were evaluated. Nano-A was prepared by the injection of a dimethyl sulfoxide (DMSO) solution of GLB into the HPMC solution, whereas nano-B was obtained by the injection of a DMSO solution of GLB and HPMC into water. Cryogenic transmission electron microscopy, field-emission scanning electron microscopy, and field-emission transmission electron microscopy including energy dispersive X-ray spectrometry revealed that the particles of the nano-A and nano-B samples are hollow spheres and non-spherical nanoparticles, respectively...
March 5, 2018: Molecular Pharmaceutics
Yu Chen, Lin Chen, Hong Zhang, Shibo Huang, Yuqing Xiong, Chunhua Xia
Sulfonylureas (SUs) such as glibenclamide, gliclazide, glimepiride, glipizide and gliquidone are one of the first oral medicines available for the treatment of type 2 diabetes, and are widely used for the treatment of hyperglycaemia. The hepatic transporters, organic anion transporting polypeptide 1B1 (OATP1B1) and organic anion transporting polypeptide 1B3 (OATP1B3), play an important role in the disposition of a variety of drugs by mediating their uptake from blood into hepatocytes. Drug-drug interactions mediated by OATP1B1/1B3 may result in the hepatic transporting change for drug substrates...
March 2, 2018: Basic & Clinical Pharmacology & Toxicology
Deyamira Matuz-Mares, Alain Hernández-Vázquez, Héctor Riveros-Rosas, Raquel Guinzberg, Tania Quesada-López, Alfonso Cárabez-Trejo, Ofelia Mora, Enrique Piña
The physiological regulation of hepatic glutathione efflux by catecholamines is poorly understood. The purpose of this work was to review the role of adrenergic receptors (AR) on total glutathione (GT ) efflux in rat liver. Two models were used: isolated hepatocytes and perfused livers. In hepatocytes 10 μM adrenaline (Adr), but not isoproterenol (Iso) a β-AR agonist, or phenylephrine (Phe) an α1 -AR agonist, (in a Krebs-Henseleit Buffer (KHB) enriched with Ca2+ and some aminoacids) increased in 13% GT efflux...
February 26, 2018: Archives of Biochemistry and Biophysics
Kaibin Huang, Ziyue Wang, Yong Gu, Zhong Ji, Zhenzhou Lin, Shengnan Wang, Suyue Pan, Yongming Wu
BACKGROUND: Glibenclamide (GBC) improves neurological outcome after cardiac arrest (CA) in rats. In this study, we sought to elucidate the mechanism responsible for the neuroprotective effects of GBC by using a high-field MRI system. METHODS: Male Sprague-Dawley rats were subjected to 10-min asphyxial CA followed by cardiopulmonary resuscitation (CPR). Diffusion-weighted imaging (DWI) as well as conventional T2-weighted imaging was conducted prior to CA and at 24, 48, and 72 h after resuscitation...
February 28, 2018: Neurocritical Care
N M Phani, M Vohra, P Adhikari, S K Nagri, U Shashikiran, S C D'Souza, P R R Kalluri, K Satyamoorthy, P S Rai
BACKGROUND: Several SNPs were identified through GWAS for their association with type 2 diabetes which has implications to pancreatic β-cell physiology. OBJECTIVE: We aimed to study the role of risk alleles of TCF7L2, KCNJ11, CDKN2A, CDKAL1, IGF2BP2, SLC30A8 and KCNQ1 along with pharmacokinetic variants in response to sulfonylureas. METHOD: We performed a prospective study on 209 newly diagnosed subjects; treatment naive T2D subjects were recruited...
February 22, 2018: Current Molecular Medicine
José M Centeno, Luis Miranda-Gómez, Mikahela A López-Morales, Teresa Jover-Mengual, María C Burguete, Vannina G Marrachelli, María Castelló-Ruiz, Alicia Aliena-Valero, Enrique Alborch, Francisco J Miranda
Diabetic nephropathy is associated with increased risk of cardiovascular disease. B-type natriuretic peptide (BNP) plays an important role in cardiovascular pathophysiology and therapeutics. The aim of the present study was to investigate the influence of experimental diabetes on the mechanisms that regulate the relaxant response of the rabbit renal artery to BNP. Arterial relaxations to BNP were enhanced in diabetic rabbits. Indomethacin enhanced BNP-induced relaxation in control rabbits but showed no effect in diabetic rabbits...
February 21, 2018: Naunyn-Schmiedeberg's Archives of Pharmacology
Fiaz Alam, Qazi Najam Us Saqib, Mohammad Ashraf
BACKGROUND: Zanthoxylum armatum DC is an important medicinal plant of south East Asia, and has been used to treat various ailments in traditional medicine including diabetes. This study investigated the in vitro and in vivo antidiabetic and biochemical effects of extracts of Z. armatum in mice. METHOD: The extracts of fruit, bark and leaf from Z. armatum were tested for α-glucosidase inhibition activity. Albino mice of either sex weighing (26-30 g) assigned into groups...
February 20, 2018: BMC Complementary and Alternative Medicine
Caio Átila Prata Bezerra Souza, Breytiner Amaro de Oliveira, Sacha Aubrey Alves Rodrigues Santos, Francisco Lucas Alves Batista, Francisco Regivânio Nascimento Andrade, Eugênio Januário Ramos Neto, José de Maria Albuquerque de Melo Júnior, Francisco Rogenio da Silva Mendes, Lana Karine Vasconcelos Barroso, Kirley Marques Canuto, Francisco Ernani Alves Magalhães, Angelo Roncalli Alves E Silva, Wladimir Ronald Lobo Farias, Adriana Rolim Campos
This study aimed to evaluate the antinociceptive effect of sulphated polysaccharide from the marine algae Hypnea pseudomusciformis (PLS) using rodent models of orofacial pain. Acute pain was induced by formalin, capsaicin, cinnamaldehyde, acidified saline or glutamate (cutaneous modes) and hypertonic saline (corneal model). In one experiment, animals were pretreated with ruthenium red, glibenclamide, naloxone, L-NAME, methylene blue or ketamine to investigate the mechanism of antinociception. In another experiment, animals pretreated with PLS or saline were submitted to the temporomandibular joint formalin test...
February 19, 2018: Inflammopharmacology
Piotr Bednarczyk, Anna Kicinska, Michal Laskowski, Bogusz Kulawiak, Rafal Kampa, Agnieszka Walewska, Milena Krajewska, Wieslawa Jarmuszkiewicz, Adam Szewczyk
Mitochondrial ATP-regulated potassium channels are present in the inner membrane of the mitochondria of various cells. In the present study, we show for the first time mitochondrial ATP-regulated potassium channels in human dermal fibroblast cells. Using the patch-clamp technique on the inner mitochondrial membrane of fibroblasts, we detected a potassium channel with a mean conductance equal to 100 pS in symmetric 150 mM KCl. The activity of this channel was inhibited by a complex of ATP/Mg2+ and activated by potassium channel openers such as diazoxide or BMS 191095...
February 16, 2018: Biochimica et Biophysica Acta
Salih T Kaya, Omer Bozdogan, Talat O Ozarslan, Eylem Taskin, Didem Eksioglu, Firdevs Erim, Tulin Firat, Selcuk Yasar
CONTEXT: Cardiovascular dysfunctions such as life-threatening arrhythmias are one of the main reasons of mortality and morbidity in diabetic patients Objective: We aimed to investigate the long-term effects of resveratrol, berberine and glibenclamide combinations on the ischemia/reperfusion (I/R) induced arrhythmias in streptozotocin (STZ)-induced diabetic rats and to investigate the role of myocardial KATP channel in the possible anti-arrhythmic actions of the treatments. METHODS: Two days after induction of diabetes, diabetic rats were treated with resveratrol [5 mg/kg, intraperitoneally (i...
February 18, 2018: Archives of Physiology and Biochemistry
Naeem Ullah Jan, Amjad Ali, Bashir Ahmad, Naveed Iqbal, Achyut Adhikari, Inayat-Ur-Rehman, Abid Ali, Safdar Ali, Azra Jahan, Hamid Ali, Ijaz Ali, Anwar Ullah, Syed Ghulam Musharraf
The demand for natural medicines has increased because of their limited adverse effects. The aim of study is to explore the antidiabetic potential of isolated steroidal alkaloid from Sarcococca saligna in streptozotocin induced diabetic rats. To determine the antidiabetic activity of steroidal alkaloids, diabetes was induced in rats by injecting streptozotocin intraperitoneally at a dose of 40 mg/Kg. After a week of STZ injection the treatment were started and the 8th day was considered as the 1st day of treatment and up to four weeks the rats were treated with steroidal alkaloids...
February 14, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Jerine Peter Simon, Udhaya Lavinya Baskaran, Kadar Basha Shallauddin, Giridharan Ramalingam, Sabina Evan Prince
The aim of our study is to investigate the protective effect of Spirulina fusiformis against streptozotocin-induced diabetes in Wistar albino rats. Rats were divided into five groups: group I was normal control, group II was diabetic control (50 mg/kg b.w. of streptozotocin, i.p.), group III was Spirulina fusiformis (400 mg/kg b.w., p.o.) treated diabetic rats; group IV was Glibenclamide (0. 6 mg/kg b.w., p.o.) treated diabetic rats and group V was treated with Spirulina fusiformis (400 mg/kg b.w., p.o.) alone...
February 2018: 3 Biotech
Sattar Ostadhadi, Abouzar Moradi, Samira Zolfaghari, Vahid Nikoui, Ahmad Reza Dehpour
Organophosphates (OPs) and carbamates are acetylcholine esterase inhibitors (AChEIs), which can cause seizure and lethality. Anticonvulsant properties of potassium channel openers including cromakalim have been determined in previous studies. In the present experiment, the possible effect of cromakalim on the convulsion and death induced by OPs and carbamates was studied in mice. Dichlorvos (an OP, 50 mg/kg) and physostigmine (a carbamate, 2 mg/kg) were used to induce seizure in animals. Cromakalim at doses of 0...
January 2018: Acta Medica Iranica
Silvério Ferreira Silva Filho, Andreia Cardoso Pereira, Jorge M G Sarraguça, Mafalda C Sarraguça, João Lopes, Pedro Freitas Filho, Adenilson Oliveira Dos Santos, Paulo Roberto da Silva Ribeiro
A cocrystal of glibenclamide (GLB), an antidiabetic drug classified as type II compound according to the Biopharmaceutics Classification System (BCS), has been synthesised using tromethamine (TRIS) as coformer in 1:1 molar ratio, by slow solvent evaporation cocrystalization. The cocrystal obtained was characterized by X-ray powder diffraction (XRPD), differential scanning calorimetry (DSC), Raman, mid infrared (MIR), and near-infrared (NIR) spectroscopy. The results consistently show the formation of a cocrystal between API and conformer with the synthons corresponding to hydrogen bonding between hydrogen in amines of tromethamine and carbonyl and sulfonyl groups in glibenclamide...
February 9, 2018: Journal of Pharmaceutical Sciences
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"