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https://www.readbyqxmd.com/read/28441501/hooked-on-cryogels-a-carbamate-linker-based-depot-for-slow-drug-release
#1
Duygu Aydin, Mehmet Arslan, Amitav Sanyal, Rana Sanyal
Poly(ethylene glycol) (PEG) based bulk hydrogels and cryogels containing activated carbonate groups as amine reactive handles to facilitate drug conjugations through carbamate linkages were fabricated and evaluated as slow releasing drug reservoirs. As an initial approach, photopolymerization of N-hydroxysuccinimide (NHS)-activated carbonate functional group containing monomer and PEG-methacrylate in the presence of a crosslinker was utilized to obtain bulk hydrogels with high gel conversions. The resultant hydrogels possessed moderate water uptake (170-340 %) which was dependent on the monomer ratios...
April 25, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28438719/chick-subcutaneous-and-abdominal-adipose-tissue-depots-respond-differently-in-lipolytic-and-adipogenic-activity-to-%C3%AE-melanocyte-stimulating-hormone-%C3%AE-msh
#2
Steven L Shipp, Guoqing Wang, Mark A Cline, Elizabeth R Gilbert
In birds, α-MSH is anorexigenic, but effects on adipose tissue are unknown. Four day-old chicks were intraperitoneally injected with 0 (vehicle), 5, 10, or 50μg of α-MSH and subcutaneous and abdominal adipose tissue collected at 60min for RNA isolation (n=10). Plasma was collected post-euthanasia at 60 and 180min for measuring non-esterified fatty acids (NEFA) and α-MSH (n=10). Relative to the vehicle, food intake was reduced in the 50μg-treated group. Plasma NEFAs were greater in 10μg than vehicle-treated chicks at 3h...
April 21, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28437215/contraceptive-use-and-pregnancy-incidence-among-women-participating-in-an-hiv-prevention-trial
#3
Carolyne A Akello, Katherine E Bunge, Clemensia Nakabiito, Brenda G Mirembe, Mary Glenn Fowler, Anupam Mishra, Jeanne Marrazzo, Zvavahera M Chirenje, Connie Celum, Jennifer E Balkus
BACKGROUND: Recent HIV prevention trials required use of effective contraceptive methods to fulfill eligibility for enrollment. We compared pregnancy rates in a subset of participants enrolled in the Microbicide Trials Network protocol (MTN-003), a randomized trial of chemoprophylaxis to prevent HIV acquisition among women aged 18-45 years who initiated depot medroxyprogesterone acetate (DMPA) or combined oral contraceptives (COCs) at enrollment, relative to those already using DMPA or COCs...
February 17, 2017: Journal of Women's Health
https://www.readbyqxmd.com/read/28435952/foscarnet-calcium-microcrystals-as-the-intravitreal-drug-depot
#4
Yuling Sun, Yong Tao, Qingchen Cao, Yanbin Huang
Foscarnet sodium is an antiviral drug for the treatment of CMV retinitis, currently in the form of twice-weekly intravitreal injection. Here we developed foscarnet calcium microcrystals as the drug depot, and using the rabbit model we demonstrated that the injected microcrystals maintained a therapeutically relevant drug concentration in the vitreous for more than 3 months.
April 24, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28434744/a-prospective-cohort-study-of-digital-cushion-and-corium-thickness-part-1-associations-with-body-condition-lesion-incidence-and-proximity-to-calving
#5
R F Newsome, M J Green, N J Bell, N J Bollard, C S Mason, H R Whay, J N Huxley
Claw horn disruption lesions (CHDL) are a major cause of lameness in dairy cattle and are likely a result of excessive forces being applied to the germinal epithelium that produces the claw horn. The digital cushion is a connective tissue structure, containing depots of adipose tissue, that sits beneath the distal phalanx and has been shown to be thicker in fatter cows. Body condition score (BCS) loss is a risk factor for CHDL, and one possible explanation is that fat is mobilized from the digital cushion during negative energy balance, causing the digital cushion to thin and lose force-dissipating capacity, leading to disruption of claw horn growth...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28434697/poor-outcomes-of-irrigation-and-debridement-in-acute-periprosthetic-joint-infection-with-antibiotic-impregnated-calcium-sulfate-beads
#6
Michael A Flierl, Brian M Culp, Kamil T Okroj, Bryan D Springer, Brett R Levine, Craig J Della Valle
BACKGROUND: One proposed strategy to increase the success of irrigation and debridement with implant retention for the treatment of acute periprosthetic joint infection (PJI) is the use of dissolvable antibiotic-impregnated calcium sulfate beads to provide a local depot of antibiotics. The purpose of this study was to evaluate the outcome of such an approach. METHODS: Thirty-two patients with acute hematogenous (18 patients; 1 bilateral) or acute postoperative (14 patients) PJIs who underwent irrigation and debridement with implant retention and addition of antibiotic-impregnated calcium sulfate beads were retrospectively reviewed...
March 29, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28431377/metabolic-regulation-and-the-anti-obesity-perspectives-of-human-brown-fat
#7
REVIEW
Camilla Scheele, Søren Nielsen
Activation of brown adipose tissue (BAT) in adult humans increase glucose and fatty acid clearance as well as resting metabolic rate, whereas a prolonged elevation of BAT activity improves insulin sensitivity. However, substantial reductions in body weight following BAT activation has not yet been shown in humans. This observation raise the possibility for feedback mechanisms in adult humans in terms of a brown fat-brain crosstalk, possibly mediated by batokines, factors produced by and secreted from brown fat...
April 11, 2017: Redox Biology
https://www.readbyqxmd.com/read/28431116/ontogeny-and-thermogenic-role-for-sternal-fat-in-female-sheep
#8
Belinda A Henry, Mark Pope, Mark Birtwistle, Rachael Loughnan, Reham Alagal, John-Paul Fuller-Jackson, Viv Perry, Helen Budge, Iain J Clarke, Michael E Symonds
Brown adipose tissue acting through a unique uncoupling protein (UCP1) has a critical role in preventing hypothermia in new-born sheep but is then considered to rapidly disappear during postnatal life. The extent to which the anatomical location of fat influences postnatal development and thermogenic function, particularly following feeding, in adulthood, are not known and were both examined in our study. Changes in gene expression of functionally important pathways (i.e. thermogenesis, development, adipogenesis and metabolism) were compared between sternal and retroperitoneal fat depots together with a representative skeletal muscle over the first month of postnatal life, coincident with the loss of brown fat and accumulation of white fat...
April 19, 2017: Endocrinology
https://www.readbyqxmd.com/read/28430917/pka-differentially-regulates-adipose-depots-to-control-energy-expenditure
#9
Barton Wicksteed, Lorna M Dickson
No abstract text is available yet for this article.
March 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28428086/evaluation-of-garlic-oil-in-nano-emulsified-form-optimization-and-its-efficacy-in-high-fat-diet-induced-dyslipidemia-in-wistar-rats
#10
Gokulakannan Ragavan, Yuvashree Muralidaran, Badrinathan Sridharan, Rajesh Nachiappa Ganesh, Pragasam Viswanathan
Garlic oil nanoemulsion was formulated using ultrasonic emulsification and the optimized garlic oil nanoemulsion ratio (1:2) of oil: surfactant showed spherical, with tiny droplet size 24.9 ± 1.11 nm. It was observed that the prepared nanoemulsion has the zeta potential of -42.63 ± 1.58 mV and a low polydispersity index of 0.2 ± 0.09 with excellent stability. The formulation was subjected to in vivo acute and sub-acute toxicity. In acute toxicity study, single oral administration of 18.63 ml of garlic oil nanoemulsion/kg resulted in immediate mortality...
April 18, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28428027/fructose-intervention-for-12-weeks-does-not-impair-glycemic-control-or-incretin-hormone-responses-during-oral-glucose-or-mixed-meal-tests-in-obese-men
#11
N Matikainen, S Söderlund, E Björnson, L H Bogl, K H Pietiläinen, A Hakkarainen, N Lundbom, B Eliasson, S M Räsänen, A Rivellese, L Patti, A Prinster, G Riccardi, J-P Després, N Alméras, J J Holst, C F Deacon, J Borén, M-R Taskinen
BACKGROUND AND AIMS: Incretin hormones glucagon-like peptide (GLP)-1 and glucose-dependent insulinotropic polypeptide (GIP) are affected early on in the pathogenesis of metabolic syndrome and type 2 diabetes. Epidemiologic studies consistently link high fructose consumption to insulin resistance but whether fructose consumption impairs the incretin response remains unknown. METHODS AND RESULTS: As many as 66 obese (BMI 26-40 kg/m(2)) male subjects consumed fructose-sweetened beverages containing 75 g fructose/day for 12 weeks while continuing their usual lifestyle...
March 18, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28425848/the-contribution-of-bone-marrow-derived-cells-to-the-human-adipocyte-pool
#12
Peter Arner, Mikael Rydén
White adipose tissue is a remarkably expandable organ with results in the last decade showing that human white adipocytes are continuously turned over during the entire life-span. Data primarily in murine models have demonstrated that adipocytes are derived from precursors present mainly in the perivascular areas of adipose tissue but their precise origin remains unclear. Subsets of cells present in bone marrow display a multipotent differentiation capacity which has prompted the hypothesis that bone marrow-derived cells (BMDCs) may also contribute to the adipocyte pool present in peripheral fat depots...
March 15, 2017: Adipocyte
https://www.readbyqxmd.com/read/28425842/estradiol-does-not-directly-regulate-adipose-lipolysis
#13
Tara L MacDonald, Rebecca MacPherson, Laura Castellani, Daniel Cervone, Eoin Anderson, David C Wright, David J Dyck
The mechanisms by which estradiol modulates adipose lipolysis are poorly understood. We sought to measure basal and β3-stimulated indices of lipoysis (FFAs, glycerol) in vivo in E2 deficient or supplemented rats, and ex vivo with direct acute E2 exposure. For 2 weeks, ovariectomized (OVX) and OVX rats treated with a daily oral dose of E2 (OVX E2) were pairfed to SHAM controls (n = 12 per group). Adipocyte size was modestly (∼40%) increased in OVX rats, but did not reach significance (p = 0.2). After 2 weeks, half of the animals in each group received an in vivo injection of saline or 1 mg/kg of the β3 agonist CL 316, 243...
January 27, 2017: Adipocyte
https://www.readbyqxmd.com/read/28423456/progesterone-resistance-in-endometriosis-origins-consequences-and-interventions
#14
Bansari G Patel, Martin Rudnicki, Jie Yu, Yimin Shu, Robert N Taylor
Endometriosis is a common cause of pelvic pain and affects up to 10% of women of reproductive age. Aberrant progesterone signaling in the endometrium plays a significant role in impaired decidualization and establishment of ectopic endometrial implants. Eutopic endometrial cells from women with endometriosis fail to downregulate genes needed for decidualization, such as those involved in cell cycle regulation, leading to unbridled proliferation. Several causes of progesterone resistance in the endometrium have been postulated, including congenital "preconditioning", whereby the in utero environment renders infants susceptible to neonatal uterine bleeding and endometriosis...
April 19, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28421973/-bitten-by-an-exotic-venomous-snake
#15
M A Dijkman, I de Vries, M van Dam, D W de Lange
BACKGROUND: Patients who have been bitten by an exotic venomous snake are at risk of severe morbidity and a fatal outcome following an incorrect risk-assessment. Treatment with an antivenom can be necessary and can turn out to be lifesaving. In the Netherlands there are only a few cases of bites from exotic venomous snakes each year. CASE DESCRIPTION: A 28-year-old man presented at the emergency department (ED) after having been bitten by a monocled cobra (Naja kaouthia)...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28421398/supradescemetic-voriconazole-injection-for-candida-parapsilosis-keratitis
#16
Nikolaos Mamas, Konstantinos Andreanos, Klio Chatzistefanou, Petros Petrou, Dimitrios Brouzas, George Kymionis, Chrysanthi Koutsandrea, Konstantinos Droutsas
PURPOSE: To describe a technique for intracorneal application of voriconazole into the supradescemetic space in a case of deep recalcitrant Candida parapsilosis keratitis of a penetrating cornea graft. METHODS: A deep intracorneal incision reaching the center of the corneal infiltrate was created with a 20-gauge MVR blade. Then, a 27-gauge hydrodissection cannula was inserted deep into the corneal pocket, and 0.1 ml of voriconazole 0.5 mg/ml was injected until a bullous detachment of Descemet membrane (DM) covered 1/3 of the graft's area...
April 18, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28420717/heart-lipids-and-hormones
#17
Peter Wolf, Yvonne Winhofer, Martin Krssak, Michael Krebs
Cardiovascular disease is the leading cause of death in general population. Besides well known risk factors like hypertension, impaired glucose tolerance and dyslipidemia, growing evidence suggests that also hormonal changes in various endocrine diseases impact cardiac morphology and function. Recent studies highlight the importance of ectopic intracellular myocardial and pericardial lipid deposition, since even slight changes of these fat depots are associated with alterations in cardiac performance. In this review we overview the effects of hormones, including insulin, thyroid hormones, growth hormone and cortisol, on heart function, focusing on their impact on myocardial lipid metabolism, cardiac substrate utilization and ectopic lipid deposition, in order to highlight the important role of even subtle hormonal changes for heart function in various endocrine and metabolic diseases...
April 18, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28415496/a-novel-long-acting-biodegradable-depot-formulation-of-anastrozole-for-breast-cancer-therapy
#18
Gopal Venkatesh Shavi, Usha Yogendra Nayak, Meka Sreenivasa Reddy, Kishore Ginjupalli, Praful Balavant Deshpande, Ranjith Kumar Averineni, Nayanabhirama Udupa, Satya Sai Sadhu, Cyril Danilenkoff, Ramesh Raghavendra
The purpose of the present study was to fabricate PLGA 50:50 and PLA microspheres for controlled delivery of anastrozole. The microspheres were prepared by oil-in-water (o/w) emulsion/solvent evaporation technique and evaluated for particle size and encapsulation. The optimised formulations were studied for solid state characterization, in vitro release and pharmacokinetic studies. The maximum encapsulation efficiency for PLGA 50:50 and PLA microspheres with 40:1 polymer - drug ratio was observed to be 78.4±2...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28414093/imbalance-in-leptin-adiponectin-levels-and-leptin-receptor-expression-as-chief-contributors-to-triple-negative-breast-cancer-progression-in-northeast-india
#19
Rizwana Sultana, Amal Ch Kataki, Bibhuti Bhusan Borthakur, Tarun K Basumatary, Sujoy Bose
BACKGROUND: Triple-Negative breast cancer (TNBC), accounts for a large percentage of breast cancer cases in India including Northeast India. TNBC has an unclear molecular aetiology and hence limited targeted therapies. Human breast is comprised of glandular, ductal, connective, and adipose tissues. Adipose tissue is composed of adipocytes. The adipocytes apart from being energy storage depots, are also active sources of adipocytokines and/or adipokines. The role of adipokines in breast cancer including TNBC has been sporadically documented...
April 14, 2017: Gene
https://www.readbyqxmd.com/read/28412994/effects-of-high-fat-diet-on-somatic-growth-metabolic-parameters-and-function-of-peritoneal-macrophages-of-young-rats-submitted-to-a-maternal-low-protein-diet
#20
Maria Cláudia Alheiros-Lira, Gabriela Carvalho Jurema-Santos, Helyson Tomaz da-Silva, Amanda Cabral da-Silva, Sueli Moreno Senna, Wylla Tatiana Ferreira E Silva, José Candido Ferraz, Carol Góis Leandro
This study evaluated the effects of a post-weaning high-fat (HF) diet on somatic growth, food consumption, metabolic parameters, phagocytic rate and nitric oxide (NO) production of peritoneal macrophages in young rats submitted to a maternal low-protein (LP) diet. Male Wistar rats (aged 60 d) were divided in two groups (n 22/each) according to their maternal diet during gestation and lactation: control (C, dams fed 17 % casein) and LP (dams fed 8 % casein). At weaning, half of the groups were fed HF diet and two more groups were formed (HF and low protein-high fat (LP-HF))...
April 17, 2017: British Journal of Nutrition
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