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Binod Aryal, Abhishek K Singh, Xinbo Zhang, Luis Varela, Noemi Rotllan, Leigh Goedeke, Balkrishna Chaube, Joao-Paulo Camporez, Daniel F Vatner, Tamas L Horvath, Gerald I Shulman, Yajaira Suárez, Carlos Fernández-Hernando
Alterations in ectopic lipid deposition and circulating lipids are major risk factors for developing cardiometabolic diseases. Angiopoietin-like protein 4 (ANGPTL4), a protein that inhibits lipoprotein lipase (LPL), controls fatty acid (FA) uptake in adipose and oxidative tissues and regulates circulating triacylglycerol-rich (TAG-rich) lipoproteins. Unfortunately, global depletion of ANGPTL4 results in severe metabolic abnormalities, inflammation, and fibrosis when mice are fed a high-fat diet (HFD), limiting our understanding of the contribution of ANGPTL4 in metabolic disorders...
March 22, 2018: JCI Insight
Dailian Zhu, Cunqi Qin, Shanshi Ao, Qiuping Su, Xiying Sun, Tengfei Jiang, Kemei Pei, Huagang Ni, Peng Ye
Zinc porphyrin-based porous polymers (PPs-Zn) with different pore sizes were prepared by controlling the reaction condition of click chemistry, and the protein adsorption in PPs-Zn and the catalytic activity of immobilized enzyme were investigated. PPs-Zn-1 with 18 nm and PPS-Zn-2 with 90 nm of pore size were characterized by FTIR, NMR and nitrogen absorption experiments. The amount of adsorbed protein in PPs-Zn-1 was more than that in PPs-Zn-2 for small size proteins, such as lysozyme, lipase and bovine serum albumin (BSA)...
March 21, 2018: Journal of Biomaterials Science. Polymer Edition
Mariola Śliwińska-Mossoń, Stanisław Milnerowicz, Halina Milnerowicz
The present study was conducted to ascertain how cigarette smoke affects the exocrine-endocrine interactions of the human pancreas with diabetes mellitus secondary to pancreatic diseases (type 3c). Blood has been collected from smoking and non-smoking healthy individuals as well as from patients with diagnosed chronic pancreatitis and diabetes type 3c. The concentrations of interleukin-6, endothelin-1 and insulin in the plasma were determined by enzyme-linked immunosorbent assay (ELISA) tests. The activities of amylase and lipase in the serum, as well as the lipid profile, creatinine, uric acid and urea concentrations, were measured using colorimetric methods...
March 1, 2018: Diabetes & Vascular Disease Research
Andrzej Miskiewicz, Grzegorz Szparecki, Marek Durlik, Grażyna Rydzewska, Ireneusz Ziobrowski, Renata Górska
BACKGROUND: Periodontitis is a major risk factor of systemic diseases with inflammatory etiology. Numerous studies have established the connection between periodontal condition and diabetes, but there are no reports in the literature on the relationship between periodontitis and other pancreas conditions. The activity of pancreatic enzymes is an important parameter of pancreatic damage, and is also a diagnostic marker of acute and chronic pancreatitis, and the bleeding index determines the periodontitis activity...
March 20, 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
Talia Serseg, Khedidja Benarous
Side effects of some drugs may be useful in certain cases. In this work, we studied the inhibitory effects of some medications as: Folic Acid which is taken by pregnant women, Colchicine and Febuxostat which is used as treatment of gout disease. These cases are linked to obesity, where women (BMI ≥ 30) have twice higher odds of having an NTD-affected pregnancy than the normal weight women, and the Gout disease frequently occurs in combination of a Metabolic syndrome. The risk of gout increases with the increase of the mass index...
March 18, 2018: Endocrine, Metabolic & Immune Disorders Drug Targets
Laura Montoya-Sánchez, Rocío Del P Pereira-Ospina, Javier Y Pinzón-Salamanca, José M Suescún-Vargas
Pancreatitis consists in acute inflammation of the pancreas that is clinically characterized by abdominal pain. To make the diagnosis it is necessary the elevation of biochemical markers like pancreatic amylase or lipase. It is the most frequent pancreatic disease in both children and adults. Its presentation in the pediatric population is increasing and has several etiologies such as: infections, trauma, intoxication and metabolic diseases. Trauma mechanisms have been described: child maltreatment, falls, trauma with the bicycle handle and traffic accidents...
April 1, 2018: Archivos Argentinos de Pediatría
Noor Haza Fazlin Hashim, Nor Muhammad Mahadi, Rosli Md Illias, Shevin Rizal Feroz, Farah Diba Abu Bakar, Abdul Munir Abdul Murad
Dienelactone hydrolase, an α/β hydrolase enzyme, catalyzes the hydrolysis of dienelactone to maleylacetate, an intermediate for the Krebs cycle. Genome sequencing of the psychrophilic yeast, Glaciozyma antarctica predicted a putative open reading frame (ORF) for dienelactone hydrolase (GaDlh) with 52% sequence similarity to that from Coniophora puteana. Phylogenetic tree analysis showed that GaDlh is closely related to other reported dienelactone hydrolases, and distantly related to other α/β hydrolases...
March 20, 2018: Extremophiles: Life Under Extreme Conditions
Shengli Chen, Huafang Hao, Ping Zhao, Wenheng Ji, Mingxia Li, Yongsheng Liu, Yuefeng Chu
Mycoplasma bovis is a major bovine pathogen that causes considerable economic losses in the cattle industry worldwide. Moreover, M. bovis biofilm can persist in the environment and its host. To date, M. bovis biofilm antigens recognized by bovine convalescent sera and their comparison with planktonic cells have not yet been explored. This study utilized an immunoproteomic approach using two-dimensional electrophoresis, immunoblotting using convalescent bovine serum, and subsequent matrix-assisted laser desorption/ionization time-of-flight tandem mass spectrometry (MALDI-TOF/TOF MS) to identify the immunoreactive proteins expressed in biofilm- and planktonic-grown M...
2018: Frontiers in Microbiology
Wieneke Dijk, Sophie Schutte, Edo O Aarts, Ignace M C Janssen, Lydia Afman, Sander Kersten
BACKGROUND: Elevated plasma triglycerides are increasingly viewed as a causal risk factor for coronary artery disease. One protein that raises plasma triglyceride levels and that has emerged as a modulator of coronary artery disease risk is angiopoietin-like 4 (ANGPTL4). ANGPTL4 raises plasma triglyceride levels by inhibiting lipoprotein lipase (LPL), the enzyme that catalyzes the hydrolysis of circulating triglycerides on the capillary endothelium. OBJECTIVE: The objective of the present study was to assess the association between ANGPTL4 and LPL in human adipose tissue, and to examine the influence of nutritional status on ANGPTL4 expression...
February 17, 2018: Journal of Clinical Lipidology
Jun He, Heyang Zheng, Daodong Pan, Tao Liu, Yangying Sun, Jinxuan Cao, Zhen Wu, Xiaoqun Zeng
Sheldrake is a duck breed widely used for its meat and eggs. In this study, the quantities of abdominal fat, sebum, intramuscular fat and liver fat, meat quality (pH, cooking loss, drip loss, and shear force), and expression and activity of several enzymes at different ages were determined. The results showed that the fat content increased (P < 0.05) during the aging process (90 d, 180 d, 270 d, and 360 d). Fatty acid synthase (FAS) and malic enzyme (ME) were chosen to represent the activity of lipid biosynthesis in Sheldrake ducks...
March 15, 2018: Poultry Science
Pamela El Khoury, Andy Awad, Brigitte Wex, Roy A Khalaf
We have previously characterized Pir32, a Candia albicans cell wall protein that we found to be involved in filamentation, virulence, chitin deposition, and resistance to oxidative stress. Other than defining the cell shape, the cell wall is critical for the interaction with the surrounding environment and the point of contact and interaction with the host surface. In this study, we applied tandem mass spectrometry combined with bioinformatics to investigate cell wall proteome changes in a pir32 null strain...
2018: PloS One
Kalaivani A, V V Sathibabu Uddandrao, Brahmanaidu Parim, Saravanan Ganapathy, Nivedha P R, Sushma Chandulee Kancharla, Rameshreddy P, Swapna K, Vadivukkarasi Sasikumar
In this study, we evaluated the ameliorative potential of Cucurbita maxima seeds oil (CSO (100 mg/kg body weight)) supplementation to high fat diet (HFD)-induced obese rats for 30 days on the changes in body weight, markers of lipid metabolism such as LDL, HDL, triglycerides, total cholesterol, adiponectin, leptin, amylase, and lipase. We also investigated the effects of CSO on the changes of lipid metabolic enzymes such as fatty-acid synthase, acetyl CoA carboxylase, carnitine palmitoyl transferase-1, HMG CoA reductase, and inflammatory markers (TNF-α and IL-6)...
March 19, 2018: Archives of Physiology and Biochemistry
Dominique Lombardo, Françoise Silvy, Isabelle Crenon, Emmanuelle Martinez, Aurélie Collignon, Evelyne Beraud, Eric Mas
Pancreatic adenocarcinomas and diabetes mellitus are responsible for the deaths of around two million people each year worldwide. Patients with chronic pancreatitis do not die directly of this disease, except where the pathology is hereditary. Much current literature supports the involvement of bile salt-dependent lipase (BSDL), also known as carboxyl ester lipase (CEL), in the pathophysiology of these pancreatic diseases. The purpose of this review is to shed light on connections between chronic pancreatitis, diabetes, and pancreatic adenocarcinomas by gaining an insight into BSDL and its variants...
February 23, 2018: Oncotarget
David Lopez, Sébastien Ribeiro, Philippe Label, Boris Fumanal, Jean-Stéphane Venisse, Annegret Kohler, Ricardo R de Oliveira, Kurt Labutti, Anna Lipzen, Kathleen Lail, Diane Bauer, Robin A Ohm, Kerrie W Barry, Joseph Spatafora, Igor V Grigoriev, Francis M Martin, Valérie Pujade-Renaud
Corynespora cassiicola is an Ascomycetes fungus with a broad host range and diverse life styles. Mostly known as a necrotrophic plant pathogen, it has also been associated with rare cases of human infection. In the rubber tree, this fungus causes the Corynespora leaf fall (CLF) disease, which increasingly affects natural rubber production in Asia and Africa. It has also been found as an endophyte in South American rubber plantations where no CLF outbreak has yet occurred. The C. cassiicola species is genetically highly diverse, but no clear relationship has been evidenced between phylogenetic lineage and pathogenicity...
2018: Frontiers in Microbiology
Jennifer Luk, Yong Lu, Amanda Ackermann, Xiaoxue Peng, Diane Bogdan, Michelino Puopolo, David E Komatsu, Simon Tong, Iwao Ojima, Mario J Rebecchi, Martin Kaczocha
Background: Metabolism of the endocannabinoid 2-arachidonoylglycerol (2-AG) yields arachidonic acid (AA), the precursor to proalgesic eicosanoids including prostaglandin E2 (PGE2 ). Diacylglycerol lipase β (DAGLβ) is an enzyme that synthesizes 2-AG and its inhibition reduces eicosanoid levels and produces antinociceptive effects in models of inflammatory pain. Here we test whether inhibition of DAGLβ produces antinociceptive effects in a model of postoperative pain. Methods: Rats were administered the selective DAGLβ inhibitor KT109 or vehicle and underwent plantar incision...
2018: Journal of Pain Research
Keisuke Fukumura, Takahiro Konuma, Yusuke Tsukamoto, Shinji Nagata
Adipokinetic hormone (AKH), an analog of mammalian glucagon, functions in supplying the required energy by releasing lipids and carbohydrates from the fat body into the hemolymph. Our previous study showed that AKH receptor (AKHR) knockdown in the two-spotted cricket Gryllus bimaculatus decreased hemolymph lipid levels and increased its feeding frequency. To reveal underlying mechanisms by which AKH signaling modulates lipid homeostasis, we analyzed the fatty acid composition as the lipid structure in the crickets...
March 16, 2018: Scientific Reports
Jianyong Zheng, Wei Wei, Xing Lan, Yinjun Zhang, Zhao Wang
This study describes a sensitive and fluorescent microplate assay method to detect lipase transesterification activity. Lipase-catalyzed transesterification between butyryl 4-methyl umbelliferone (Bu-4-Mu) and methanol in tert-butanol was selected as the model reaction. The release of 4-methylumbelliferone (4-Mu) in the reaction was determined by detecting the fluorescence intensity at λex 330 nm and λem 390 nm. Several lipases were used to investigate the accuracy and efficiency of the proposed method...
March 13, 2018: Analytical Biochemistry
David S Olshan, Daniel J Rader
The angiopoietin-like proteins are a family of proteins that share structural similarities to the angiopoietins. These proteins have been described to play a key role in the regulation of a myriad of physiologic processes, including serving as essential modulators of lipid and glucose metabolism. Angiopoietin-like protein 4 (ANGPTL4) is a key regulator of lipoprotein lipase, and its modulation has been shown to significantly impact the body's processing and distribution of triglycerides and cholesterol. Although more research remains to elucidate the full range of mechanisms through which ANGPTL4 affects triglyceride and cholesterol homeostasis, current research has associated decreased ANGPTL4 function with a beneficial effect on lipid parameters and overall cardiovascular disease risk, opening the possibility of ANGPTL4 as a new therapeutic target for the treatment of cardiovascular disease...
February 2, 2018: Journal of Clinical Lipidology
Hanrui Zhang
PURPOSE OF REVIEW: Lysosomal acid lipase (LAL), encoded by the LIPA gene, is an essential lysosomal enzyme that hydrolyzes cholesteryl ester and triglyceride delivered to the lysosome. This review highlights the novel pathophysiological role of LAL, the functional genomic discoveries of LIPA as a risk locus for coronary heart diseases (CHD), and the clinical advance in therapies for LAL deficiency. RECENT FINDINGS: The essential role of LAL in lipid metabolism has been confirmed in human and mice with LAL deficiency...
March 15, 2018: Current Opinion in Lipidology
Anamaria Todea, Diana Aparaschivei, Valentin Badea, Carmen G Boeriu, Francisc Peter
evelopments of past years placed the bio-based polyesters as competitive substitutes for fossil-based polymers. Moreover, enzymatic polymerization using lipase catalysts has become an important green alternative to chemical polymerization for the synthesis of polyesters with biomedical applications, as several drawbacks related to the presence of traces of metal catalysts, toxicity and higher temperatures could be avoided. Copolymerization of ε-caprolactone (CL) with four hydroxy-fatty acids (HFA) from renewable sources, e...
March 15, 2018: Biotechnology Journal
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