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https://www.readbyqxmd.com/read/28636818/critical-temperature-of-1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine-monolayers-and-its-possible-biological-relevance
#1
Jordi Hernandez Borrell, Oscar Domenech
Since transmembrane proteins (TMPs) can be obtained with sufficient purity for x-ray diffraction studies more frequently than decades ago, their mechanisms of action may now be elucidated. One of the pending issues is the actual interplay between transmembrane proteins and membrane lipids. There is strong evidence of the involvement of specific lipids with some membrane proteins, such as the potassium crystallographically sited activation channel (KcsA) of Streptomyces lividans and the secondary transporter of lactose LacY of Escherichia coli, the activities of which are associated with the presence of anionic phospholipids such as the phosphatidylglycerol (PG) and phosphatidyethanolamine (PE), respectively...
June 21, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28633956/a-time-adjustable-pulsatile-release-system-for-ketoprofen-in-vitro-and-in-vivo-investigation-in-a-pharmacokinetic-study-and-an-ivivc-evaluation
#2
Haiying Wang, Lizhen Cheng, Haoyang Wen, Caiyan Li, Yuenan Li, Xiaoyu Zhang, Yongfei Wang, Yanyan Wang, Tuanjie Wang, Weisan Pan, Xinggang Yang
A time-adjustable pulsatile release system (TAPS) containing ketoprofen (KF) as an active pharmaceutical agent was developed having been designed for bedtime dosing and releasing drug in the early morning to control the symptoms of rheumatoid arthritis (RA). The formulation involved a tablet core (KF) and a control-release layer, and the coating membrane was composed of EC and Eudragit L100. A single-factor study, a central composite design and a response surface method were selected to optimize the formula and the optimum prescription was as follows: tablet core (KF 50mg, MCC 70mg, lactose 40mg, L-HPC 38mg), and film (EC 7...
June 17, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28633512/media-optimization-for-economic-succinic-acid-production-by-enterobacter-sp-lu1
#3
Marcin Podleśny, Agnieszka Kubik-Komar, Jagoda Kucharska, Jakub Wyrostek, Piotr Jarocki, Zdzisław Targoński
Enterobacter sp. LU1 could efficiently convert glycerol to succinic acid under anaerobic conditions after the addition of lactose. In this study, media constituents affecting both Enterobacter sp. LU1 biomass and succinic acid production were investigated employing response surface methodology (RSM) with central composite design. Statistical methods led to the development of an efficient and inexpensive microbiological media based on crude glycerol, whey permeate as carbon sources and urea as a nitrogen source...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28631347/reducing-the-maternal-dietary-intake-of-indigestible-and-slowly-absorbed-short-chain-carbohydrates-is-associated-with-improved-infantile-colic-a-proof-of-concept-study
#4
M Iacovou, E C Mulcahy, H Truby, J S Barrett, P R Gibson, J G Muir
BACKGROUND: To investigate if a low fermentable oligo-, di- and mono-saccharides and polyols (FODMAP) diet consumed by breastfeeding mothers may be associated with reduced symptoms of infantile colic. METHODS: Exclusively breastfeeding mothers and their typically-developing healthy infants who met the Wessel Criteria for infantile colic were recruited from the community, to this single-blind, open-label, interventional study. After a 3-day qualifying period, mothers were provided a low FODMAP 7-day diet...
June 20, 2017: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/28629504/sulfodiicoccus-acidiphilus-gen-nov-sp-nov-a-sulfur-inhibited-thermoacidophilic-archaeon-belonging-to-the-order-sulfolobales-isolated-from-a-terrestrial-acidic-hot-spring
#5
Hiroyuki D Sakai, Norio Kurosawa
A novel thermoacidophilic archaeon, strain HS-1T, was isolated from the Hakone Ohwaku-dani hot spring in Japan. Cells of strain HS-1T in exponential phase were cocci to irregular cocci with a diameter of 0.8-1.5 µm. The strain grew within a temperature range of 50-70 °C (optimal: 65-70 °C), a pH range of pH 1.4-5.5 (optimal: pH 3.0-3.5) and a NaCl concentration range of 0-2.5 % (w/v). The novel strain grew in aerobic conditions but did not grow anaerobically. Moreover, this strain utilized various complex substrates (beef extract, casamino acids, peptone, tryptone and yeast extract) and sugars (arabinose, xylose, galactose, glucose, maltose, sucrose, raffinose and lactose) as sole carbon sources...
June 20, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28629498/rodentibacter-gen-nov-including-rodentibacter-pneumotropicus-comb-nov-rodentibacter-heylii-sp-nov-rodentibacter-myodis-sp-nov-rodentibacter-ratti-sp-nov-rodentibacter-heidelbergensis-sp-nov-rodentibacter-trehalosifermentans-sp-nov-rodentibacter-rarus-sp-nov
#6
Sadhana Adhikary, Werner Nicklas, Magne Bisgaard, Ron Boot, Peter Kuhnert, Torsten Waberschek, Bent Aalbæk, Bozena Korczak, Henrik Christensen
Rodentibacter gen. nov. is proposed based on isolation and phenotypic characterization of strains, predominantly from rodents. The strains showed 86 % or higher rpoB gene sequence similarity and indicated a genus-level relationship within Pasteurellaceae. The strains compared at 16S rRNA gene sequence level showed 93.8 % or higher similarity, and their genus-level relationship within Pasteurellaceae was confirmed by phenotypic analysis. The type species Rodentibacter pneumotropicus comb. nov. is reclassified from [Pasteurella] pneumotropica with type strain NCTC 8141T (=CCUG 12398T)...
June 20, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28629045/chitosan-based-in-situ-forming-polyelectrolyte-complexes-a-potential-sustained-drug-delivery-polymeric-carrier-for-high-dose-drugs
#7
Niharika Lal, Juhi Dubey, Praveen Gaur, Navneet Verma, Anurag Verma
The present study investigated the feasibility of using combination of Cationic and anionic polymers as sustained release carrier for the delivery of high dose gastric acid soluble model drug Paracetamol. Various formulations were prepared using wet granulation technique. Briefly a cooled (4°C) neutral solution of chitosan (CH) was combined with cooled aqueous solution (4°C) of anionic polymer such as Gum Ghatti (GG) and Xanthan gum (XG). This polyelectrolyte solution was then used to granulate the model drug Paracetamol...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28627175/pull-and-paste-of-single-transmembrane-proteins
#8
Tetiana Serdiuk, Stefania Anna Mari, Daniel J Müller
How complex cytoplasmic membrane proteins insert and fold into cellular membranes is not fully understood.  One problem is the lack of suitable approaches that allow investigating the process by which polypeptides insert and fold into membranes.  Here, we introduce a method to mechanically unfold and extract a single polytopic -helical membrane protein, the lactose permease (LacY), from a phospholipid membrane, transport the fully unfolded polypeptide to another membrane and insert and refold the polypeptide into the native structure...
June 19, 2017: Nano Letters
https://www.readbyqxmd.com/read/28625832/diet-low-in-fodmaps-reduces-symptoms-in-patients-with-irritable-bowel-syndrome-and-probiotic-restores-bifidobacterium-species-a-randomized-controlled-trial
#9
H M Staudacher, M C E Lomer, F M Farquharson, P Louis, F Fava, E Franciosi, M Scholz, K M Tuohy, J O Lindsay, P M Irving, K Whelan
BACKGROUND & AIMS: Dietary restriction of fermentable carbohydrates (a low FODMAP diet) has been reported to reduce symptoms in some patients with irritable bowel syndrome (IBS). We performed a randomized, placebo-controlled study to determine its effects on symptoms and the fecal microbiota in patients with IBS. METHODS: We performed a 2x2 factorial trial of 104 patients with IBS (18-65 years old), based on the Rome III criteria, at 2 hospitals in the United Kingdom...
June 15, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28624272/effects-of-partial-replacement-of-corn-grain-with-lactose-in-calf-starters-on-ruminal-fermentation-and-growth-performance
#10
A Saegusa, K Inouchi, M Ueno, Y Inabu, S Koike, T Sugino, M Oba
The objective of this study was to evaluate effects of partial replacement of dry ground corn with lactose in calf starters on dry matter intake, growth rate, ruminal pH, and volatile fatty acid profile. Sixty Holstein bull calves were raised on a high plane of nutrition program until 55 d of age. Calves were fed texturized calf starters containing 30.1% steam-flaked grains and lactose at 0 (control), 5, or 10% (n = 20 for each treatment) on a dry matter basis. All calves were fed treatment calf starters ad libitum from d 7 and kleingrass hay from d 35...
June 14, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28624071/corrigendum-to-genetic-parameters-for-lactose-and-its-correlation-with-other-milk-production-traits-and-fitness-traits-in-pasture-based-production-systems-j-dairy-sci-100-3754-3766
#11
https://www.readbyqxmd.com/read/28623320/postprandial-metabolic-response-of-breast-fed-infants-and-infants-fed-lactose-free-vs-regular-infant-formula-a-randomized-controlled-trial
#12
Carolyn M Slupsky, Xuan He, Olle Hernell, Yvonne Andersson, Colin Rudolph, Bo Lönnerdal, Christina E West
Lactose intolerance is a major concern driving the growth of lactose-free foods including lactose-free infant formula. It is unknown what the metabolic consequence is of consumption of a formula where lactose has been replaced with corn syrup solids (CSS). Here, a randomized double-blinded intervention study was conducted where exclusively formula-fed infants were fed formula containing either lactose or CSS-based infant formula and compared with an equal number of exclusively breast-fed infants. Plasma metabolites and insulin were measured at baseline, 15, 30, 60, 90 and 120 min after feeding...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28617863/the-use-of-metabolic-profiling-to-identify-insulin-resistance-in-veal-calves
#13
Andre J Pantophlet, Han Roelofsen, Marcel P de Vries, Walter J J Gerrits, Joost J G C van den Borne, Roel J Vonk
Heavy veal calves (4-6 months old) are at risk of developing insulin resistance and disturbed glucose homeostasis. Prolonged insulin resistance could lead to metabolic disorders and impaired growth performance. Recently, we discovered that heavy Holstein-Friesian calves raised on a high-lactose or high-fat diet did not differ in insulin sensitivity, that insulin sensitivity was low and 50% of the calves could be considered insulin resistant. Understanding the patho-physiological mechanisms underlying insulin resistance and discovering biomarkers for early diagnosis would be useful for developing prevention strategies...
2017: PloS One
https://www.readbyqxmd.com/read/28617599/effects-of-adulteration-technique-on-the-nir-detection-of-melamine-in-milk-powder
#14
Peter F Scholl, Marti M Bergana, Betsy Jean Yakes, Zhuohong Xie, Steven Zbylut, Gerard Downey, Magdi M Mossoba, Joseph Edward Jablonski, Robert Magaletta, Stephen E Holroyd, Martin Buehler, Jianwei Qin, William Jeffrey Hurst, Joseph H LaPointe, Dean E Roberts, Carol Zrybko, Andrew Mackey, Jason D Holton, Greg A Israelson, Anitra Payne, Moon S Kim, Kuanglin Chao, Jeffrey C Moore
The U.S. Pharmacopeia has led an international collaborative project to develop a tool-box of screening methods and reference standards for the detection of milk powder adulteration. During the development of adulterated milk powder reference standards, blending methods used to combine melamine and milk had unanticipated strong effects on the NIR spectrum of melamine. The prominent absorbance band at 1468 nm of melamine was retained when it was dry-blended with skim milk powder but disappeared in wet-blended mixtures, where spray dried milk powder samples were prepared from solution...
June 15, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28616818/fosfomycin-for-the-treatment-of-drug-resistant-urinary-tract-infections-potential-of-an-old-drug-not-explored-fully
#15
Vrushali Patwardhan, Sarman Singh
INTRODUCTION: Increased emergence of bacterial resistance and the limited options of novel antimicrobial agents have necessitated the reintroduction of some old antimicrobial agents. One such drug is fosfomycin, but its potential has not been explored fully, especially in India. AIMS AND OBJECTIVES: To analyze the in vitro activity of fosfomycin, against the urinary isolates and to compare it with in vitro activity of other orally administered antimicrobial agents...
June 14, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28613401/nutrient-profiles-and-volatile-odorous-compounds-of-raw-milk-after-exposure-to-electron-beam-pasteurizing-doses
#16
Lindsay R Ward, Chris R Kerth, Suresh D Pillai
Raw milk is known to contain relatively high numbers of microorganisms, some of which include microbial pathogens. Electron beam (eBeam) processing is a nonthermal pasteurization food processing technology. The underlying hypothesis was that eBeam processing will not negatively influence the composition, nutrient content, and aroma profile of raw milk. Raw milk samples were exposed to eBeam doses of 1 and 2 kGy, since our studies had shown that 2 kGy is suitable for raw milk pasteurization. The untreated and eBeam-treated raw milk samples were analyzed to detect changes in lactose, vitamin B2 , vitamin B12 , and calcium concentrations...
June 14, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28612675/formulation-of-novel-dry-powder-inhalation-for-fluticasone-propionate-and-salmeterol-xinafoate-with-capsule-based-device
#17
Kyeong Soo Kim, Jeong Hyun Kim, Sung Giu Jin, Dong Wuk Kim, Jong Oh Kim, Chul Soon Yong, Yu Seok Youn, Kyung Taek Oh, Jong Soo Woo, Han-Gon Choi
The aim of this study was to develop a novel fluticasone propionate (FP) and salmeterol xinafoate (SX)-loaded dry powder inhaler (DPI) system, which was composed of powder formulation and performance. The air flow resistances were determined with various types of DPI device, showing that the modified RS01 device gave the specific resistance similar to the commercial DPI device. The particle properties of fluticasone propionate (FP), salmeterol xinafoate (SX) and inhalation grade lactose particles, such as particle size, size distribution and fine content, were assessed...
June 14, 2017: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/28609134/relationships-among-microbial-communities-maternal-cells-oligosaccharides-and-macronutrients-in-human-milk
#18
Janet E Williams, William J Price, Bahman Shafii, Katherine M Yahvah, Lars Bode, Mark A McGuire, Michelle K McGuire
BACKGROUND: Human milk provides all essential nutrients necessary for early life and is rich in nonnutrients, maternally derived (host) cells, and bacteria, but almost nothing is known about the interplay among these components. Research aim: The primary objective of this research was to characterize relationships among macronutrients, maternal cells, and bacteria in milk. METHODS: Milk samples were collected from 16 women and analyzed for protein, lipid, fatty acid, lactose, and human milk oligosaccharide concentrations...
June 1, 2017: Journal of Human Lactation: Official Journal of International Lactation Consultant Association
https://www.readbyqxmd.com/read/28607212/macronutrients-in-breastmilk-of-mothers-of-preterm-infants
#19
Shiwani Mahajan, Deepak Chawla, Jasbinder Kaur, Suksham Jain
OBJECTIVE: To evaluate the variability in macronutrient and energy content of breastmilk of Indian women delivering at ≤34 weeks of gestation. METHODS: In this cross-sectional study, samples of breastmilk expressed manually for feeding of preterm neonates were collected from 106 mothers at 3±1 (n=26), 7±2 (n=34), 14±2 (n=24), 21±3 (n=12) and 28±3 (n=10) days after birth. Protein, fat and carbohydrate content were estimated and total energy content was calculated...
June 4, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28605892/improvement-of-thermal-stability-of-bcg-vaccine
#20
Fatemeh Jahanbakhsh Sefidi, Homan Kaghazian, Gholam Ali Moradli, Seyed Mehdi Hassanzadeh
BAckground: Thermal stability (TS) is a part of the BCG vaccine characterization by which consistency of process in BCG vaccine production could be confirmed. To enhance the TS of the vaccine, some prevalent stabilizers in different concentration were added to the final formulation of BCG bulk prior to Freeze-drying process. We found a formulation more effective than the current stabilizer for retaining the higher viability of lyophilized BCG vaccine produced by Pasteur Institute of Iran...
June 13, 2017: Iranian Biomedical Journal
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