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https://www.readbyqxmd.com/read/28214533/the-effect-and-mechanism-of-inhibiting-glucose-6-phosphate-dehydrogenase-activity-on-the-proliferation-of-plasmodium-falciparum
#1
Zhiqiang Zhang, Xiaodan Chen, Chengrui Jiang, Zishui Fang, Yi Feng, Weiying Jiang
We screened >40,000 patients with glucose-6-phosphate dehydrogenase (G6PD) deficiency and found that the G6PD Kaiping allele was under the most positive selection for fighting against malaria in the Chinese population. However, the mechanism is unknown. The current study was designed to investigate the anti-malarial effect and mechanism of G6PD deficiency. Dehydroepiandrosterone (DHEA) was utilised for inhibiting the G6PD activity of erythrocytes. Giemsa staining of blood smears and quantitative real-time PCR were used for the detection and quantification of Plasmodium falciparum infection...
February 15, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28208930/precautionary-measures-for-successful-open-heart-surgery-in-g6pd-deficient-patient-a-case-report
#2
Rupesh Kumar
Glucose-6-Phosphate Dehydrogenase (G6PD) deficiency is among the most common enzymatic disorders of red blood cells. Cardiac surgeries on this group of individuals are associated with an additional risk in terms of impaired oxygenation, prolonged ventilation and increased risk of haemolysis. These patients have a very low threshold for haemolysis due to oxidative stress. Many commonly used drugs also predispose the individual for haemolysis when they are subjected to surgery. Here we present a known case of G6PD deficient patient with symptoms of breathlessness for the last nine years who was taken for surgery with pre-planned precautionary measures to avoid unnecessary haemolysis...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28197721/glucose-6-phosphate-dehydrogenase-deficiency-and-risk-of-diabetes-a-systematic-review-and-meta-analysis
#3
Yin Key Lai, Nai Ming Lai, Shaun Wen Huey Lee
Emerging epidemiological evidence suggests that patients with glucose-6-phosphate dehydrogenase (G6PD) deficiency may have a higher risk of developing diabetes. The aim of the review was to synthesise the evidence on the association between G6PD deficiency and diabetes. A systematic search on Medline, EMBASE, AMED and CENTRAL databases for studies published between January 1966 and September 2016 that assessed the association between G6PD deficiency and diabetes was conducted. This was supplemented by a review of the reference list of retrieved articles...
February 14, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28195434/a-patient-with-both-methemoglobinemia-and-g6pd-deficiency-a-therapeutic-conundrum
#4
N Scott Reading, José A Ruiz-Bonilla, Robert D Christensen, William Cáceres-Perkins, Josef T Prchal
No abstract text is available yet for this article.
February 13, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28185390/oxidative-stress-as-a-damage-mechanism-in-porcine-cumulus-oocyte-complexes-exposed-to-malathion-during-in-vitro-maturation
#5
Diana Flores, Verónica Souza, Miguel Betancourt, Mario Teteltitla, Humberto González-Márquez, Eduardo Casas, Edmundo Bonilla, Patricia Ramírez-Noguera, María Concepción Gutiérrez-Ruíz, Yvonne Ducolomb
Malathion is one of the most commonly used insecticides. Recent findings have demonstrated that it induces oxidative stress in somatic cells, but there are not enough studies that have demonstrated this effect in germ cells. Malathion impairs porcine oocyte viability and maturation, but studies have not shown how oxidative stress damages maturation and which biochemical mechanisms are affected in this process in cumulus-oocyte complexes (COCs). The aims of the present study were to determine the amount of oxidative stress produced by malathion in porcine COCs matured in vitro, to define how biochemical mechanisms affect this process, and determine whether trolox can attenuate oxidative damage...
February 10, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28170391/haemolysis-in-g6pd-heterozygous-females-treated-with-primaquine-for-plasmodium-vivax-malaria-a-nested-cohort-in-a-trial-of-radical-curative-regimens
#6
Cindy S Chu, Germana Bancone, Kerryn A Moore, Htun Htun Win, Niramon Thitipanawan, Christina Po, Nongnud Chowwiwat, Rattanaporn Raksapraidee, Pornpimon Wilairisak, Aung Pyae Phyo, Lily Keereecharoen, Stéphane Proux, Prakaykaew Charunwatthana, François Nosten, Nicholas J White
BACKGROUND: Radical cure of Plasmodium vivax malaria with 8-aminoquinolines (primaquine or tafenoquine) is complicated by haemolysis in individuals with glucose-6-phosphate dehydrogenase (G6PD) deficiency. G6PD heterozygous females, because of individual variation in the pattern of X-chromosome inactivation (Lyonisation) in erythroid cells, may have low G6PD activity in the majority of their erythrocytes, yet are usually reported as G6PD "normal" by current phenotypic screening tests...
February 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28155819/modelling-primaquine-induced-haemolysis-in-g6pd-deficiency
#7
James Watson, Walter Rj Taylor, Didier Menard, Sim Kheng, Nicholas J White
Primaquine is the only drug available to prevent relapse in vivax malaria. The main adverse effect of primaquine is erythrocyte age and dose dependent acute haemolytic anaemia in individuals with glucose-6-phosphate dehydrogenase deficiency (G6PDd). As testing for G6PDd is often unavailable this limits the use of primaquine for radical cure. A compartmental model of the dynamics of red blood cell production and destruction was designed to characterise primaquine-induced haemolysis using a holistic Bayesian analysis of all published data and was used to predict a safer alternative to the currently recommended once weekly 0...
February 3, 2017: ELife
https://www.readbyqxmd.com/read/28155142/single-cell-cytochemistry-illustrated-by-the-demonstration-of-glucose-6-phosphate-dehydrogenase-deficiency-in-erythrocytes
#8
Anna L Peters, Cornelis J F van Noorden
Cytochemistry is the discipline that is applied to visualize specific molecules in individual cells and has become an essential tool in life sciences. Immunocytochemistry was developed in the sixties of last century and is the most frequently used cytochemical application. However, metabolic mapping is the oldest cytochemical approach to localize activity of specific enzymes, but in the last decades of the previous century and the first decade of the present century it almost became obsolete. The popularity of this approach revived in the past few years...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28152025/prevalence-of-g6pd-deficiency-in-selected-populations-from-two-previously-high-malaria-endemic-areas-of-sri-lanka
#9
Sharmini Gunawardena, G M G Kapilananda, Dilhani Samarakoon, Sashika Maddevithana, Sulochana Wijesundera, Lallindra V Goonaratne, Nadira D Karunaweera
Glucose-6-Phosphate Dehydrogenase (G6PD) enzyme deficiency is known to offer protection against malaria and an increased selection of mutant genes in malaria endemic regions is expected. However, anti-malarial drugs such as primaquine can cause haemolytic anaemia in persons with G6PD deficiency. We studied the extent of G6PD deficiency in selected persons attending Teaching Hospitals of Anuradhapura and Kurunegala, two previously high malaria endemic districts in Sri Lanka. A total of 2059 filter-paper blood spots collected between November 2013 and June 2014 were analysed for phenotypic G6PD deficiency using the modified WST-8/1-methoxy PMS method...
2017: PloS One
https://www.readbyqxmd.com/read/28141731/growth-and-documentation-deficits-where-to-start-in-helping-families
#10
Wilhelmina Hernandez, Deborah A Frank, Samantha Morton, Carmen Palacios, Marilyn Augustyn
Pedro is a 2-year 7-month-old boy who was presented for the first time after a visit to a local emergency room (ER) for diarrhea. At the time of his birth, his undocumented mother, Clara, was 20 years old, uninsured, and with limited English proficiency living approximately 400 miles south of our practice in a different state. Although she had been brought to the United States as a child, she had never finished high school. Pedro was born what mother thought was full-term at his parent's home, where a lay midwife assisted during the delivery...
February 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28138089/significance-of-3-utr-and-pathogenic-haplotype-in-glucose-6-phosphate-deficiency
#11
Mallika Chaowanathikhom, Pornlada Nuchnoi, Duangdao Palasuwan
OBJECTIVE: To determine the polymorphisms in the 3' untranslated region (3'UTR) of the G6PD gene and analyze the specific SNPs or haplotypes that may affect messenger RNA (mRNA) secondary structure by in silico analysis. METHODS: We studied the 3'UTR polymorphisms in 107 healthy subjects living in Thailand (ethnicities unknown). The haplotype was analyzed using Haploview software. mRNA secondary structure and microRNA binding of the G6PD gene were predicted by use of the CLC Main Workbench 6...
February 2017: Laboratory Medicine
https://www.readbyqxmd.com/read/28132818/salt-inducible-kinase-3-provides-sugar-tolerance-by-regulating-nadph-nadp-redox-balance
#12
Mari Teesalu, Bohdana M Rovenko, Ville Hietakangas
Nutrient-sensing pathways respond to changes in the levels of macronutrients, such as sugars, lipids, or amino acids, and regulate metabolic pathways to maintain organismal homeostasis [1, 2]. Consequently, nutrient sensing provides animals with the metabolic flexibility necessary for enduring temporal fluctuations in nutrient intake. Recent studies have shown that an animal's ability to survive on a high-sugar diet is determined by sugar-responsive gene regulation [3-8]. It remains to be elucidated whether other levels of metabolic control, such as post-translational regulation of metabolic enzymes, also contribute to organismal sugar tolerance...
February 6, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28121993/a-comparison-of-three-quantitative-methods-to-estimate-g6pd-activity-in-the-chittagong-hill-tracts-bangladesh
#13
Benedikt Ley, Mohammad Shafiul Alam, James J O'Donnell, Mohammad Sharif Hossain, Mohammad Golam Kibria, Nusrat Jahan, Wasif A Khan, Kamala Thriemer, Mark D Chatfield, Ric N Price, Jack S Richards
BACKGROUND: Glucose-6-phosphate-dehydrogenase-deficiency (G6PDd) is a major risk factor for primaquine-induced haemolysis. There is a need for improved point-of-care and laboratory-based G6PD diagnostics to unsure safe use of primaquine. METHODS: G6PD activities of participants in a cross-sectional survey in Bangladesh were assessed using two novel quantitative assays, the modified WST-8 test and the CareStart™ G6PD Biosensor (Access Bio), The results were compared with a gold standard UV spectrophotometry assay (Randox)...
2017: PloS One
https://www.readbyqxmd.com/read/28107969/a-new-paper-based-analytical-device-for-detection-of-glucose-6-phosphate-dehydrogenase-deficiency
#14
Phuritat Kaewarsa, Wanida Laiwattanapaisal, Attakorn Palasuwan, Duangdao Palasuwan
Glucose-6-phosphate dehydrogenase (G6PD) deficiency is a genetic haemolytic disorder. Most persons with G6PD deficiency are asymptomatic, but exposure to oxidant drugs, such as the anti-malarial drug primaquine, may induce haemolysis, which is commonly found in Asian countries. A reliable test is necessary for diagnosing the deficiency to prevent an acute haemolytic crisis. This study proposes a novel quantitative method to detect G6PD deficiency using paper-based analytical devices (G6PDD-PAD). Wax printing was utilized for fabricating circular reaction zone patterns in paper...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28103909/potential-diagnostic-biomarkers-for-chronic-kidney-disease-of-unknown-etiology-ckdu-in-sri-lanka-a-pilot-study
#15
Saravanabavan Sayanthooran, Dhammika N Magana-Arachchi, Lishanthe Gunerathne, Tilak Abeysekera
BACKGROUND: In Sri Lanka, there exists chronic kidney disease of both known (CKD) and unknown etiologies (CKDu). Identification of novel biomarkers that are customized to the specific causative factors would lead to early diagnosis and clearer prognosis of the diseases. This study aimed to find genetic biomarkers in blood to distinguish and identify CKDu from CKD as well as healthy populations from CKDu endemic and non-endemic areas of Sri Lanka. METHODS: The expression patterns of a selected panel of 12 potential genetic biomarkers were analyzed in blood using RT-qPCR...
January 19, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28103889/heterogeneity-of-g6pd-deficiency-prevalence-in-mozambique-a-school-based-cross-sectional-survey-in-three-different-regions
#16
Beatriz Galatas, Lurdes Mabote, Wilson Simone, Gloria Matambisso, Lidia Nhamussua, María Del Mar Mañú-Pereira, Clara Menéndez, Francisco Saute, Eusebio Macete, Quique Bassat, Pedro Alonso, Pedro Aide
BACKGROUND: Glucose-6-phosphate dehydrogenase (G6PD) deficiency is an X-linked hereditary enzymatic abnormality that affects more than 400 million people worldwide. Most deficient individuals do not manifest any symptoms; however, several precipitant agents-such as fava intake, infections, or several drugs-may trigger acute haemolytic anaemia. Countries should be informed of the prevalence of this enzymatic anomaly within their borders, in order to make safe and appropriate national decisions regarding the use of potentially unsafe drugs for G6PD deficient individuals...
January 19, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28103504/l-arginine-alters-the-effect-of-5-fluorouracil-on-breast-cancer-cells-in-favor-of-apoptosis
#17
Mozhgan Jahani, Mehri Azadbakht, Fatemeh Norooznezhad, Kamran Mansouri
Chemoresistance in breast cancer is a major obstacle, especially in p53 mutation types. The aim of this study was to evaluate if a combination therapy of l-arginine with 5-fluorouracil (5-FU) can alter the effect of this chemotherapy drug on breast cancer cells. The study was performed on BT-20 and MCF-7 cell lines. The effects of l-arginine alone and in combination with 5-FU were investigated on cell viability, apoptosis and nitric oxide (NO) production. Drugs effects on the cellular energetic metabolism were investigated through the lactate production and glucose-6-phosphate dehydrogenase (G6PD) activity assay...
January 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28099116/determination-of-glucose-6-phosphate-dehydrogenase-cut-off-values-in-a-tunisian-population
#18
Naouel Laouini, Chaima Abdelhafidh Sahli, Latifa Jouini, Sabrine Haloui, Sondes Hadj Fredj, Rym Daboubi, Hajer Siala, Faida Ouali, Meriam Becher, Nourelhouda Toumi, Amina Bibi, Taieb Messsaoud
BACKGROUND: Glucose-6-phosphate dehydrogenase (G6PD) deficiency is the commonest enzymopathy worldwide. The incidence depends essentially on the methods used for the assessment. In this respect, we attempted in this study to set cut-off values of G6PD activity to discriminate among normal, heterozygous, and deficient individuals using the World Health Organization (WHO) classification and the receiver operating characteristics (ROC) curve analysis. METHODS: Blood samples from 250 female and 302 male subjects were enrolled in this study...
January 18, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28097104/massive-hemolysis-causing-renal-failure-in-acute-hepatitis-e-infection
#19
Pragya Karki, Sarthak Malik, Bipadabhanjan Mallick, Vishal Sharma, Surinder S Rana
Acute viral hepatitis is usually a self-limiting illness. However, it can lead to complications that can be life-threatening, such as acute liver failure. Glucose 6 phosphate dehydrogenase (G6PD) deficiency in the setting of acute viral hepatitis can lead to a massive hemolysis, manifesting as acute kidney injury and markedly raised bilirubin levels; although cases are rare. Here, we report such a case. The patient had a viral hepatitis E infection and presented with kidney injury requiring dialysis. Examination showed very high mixed hyperbilirubinemia due to massive intravascular hemolysis...
December 28, 2016: Journal of Clinical and Translational Hepatology
https://www.readbyqxmd.com/read/28096627/altered-oxidative-stress-and-carbohydrate-metabolism-in-canine-mammary-tumors
#20
K Jayasri, K Padmaja, M Saibaba
AIM: Mammary tumors are the most prevalent type of neoplasms in canines. Even though cancer induced metabolic alterations are well established, the clinical data describing the metabolic profiles of animal tumors is not available. Hence, our present investigation was carried out with the aim of studying changes in carbohydrate metabolism along with the level of oxidative stress in canine mammary tumors. MATERIALS AND METHODS: Fresh mammary tumor tissues along with the adjacent healthy tissues were collected from the college surgical ward...
December 2016: Veterinary World
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