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https://www.readbyqxmd.com/read/29679482/an-impurity-characterization-based-approach-for-the-rapid-development-of-integrated-downstream-purification-processes
#1
Steven M Timmick, Nicholas Vecchiarello, Chaz Goodwine, Laura E Crowell, Kerry R Love, J Christopher Love, Steven M Cramer
In this work, we describe a new approach for the characterization of process-related impurities along with an in silico tool to generate orthogonal, integrated downstream purification processes for biological products. A one-time characterization of process-related impurities from product expression in Pichia pastoris was first carried out using linear salt and pH gradients on a library of multimodal, salt-tolerant, and hydrophobic charge induction chromatographic resins. Reversed phase UPLC analysis of the fractions from these gradients was then used to generate large data sets of impurity profiles...
April 21, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29653178/surfactants-as-stabilizers-for-biopharmaceuticals-an-insight-into-the-molecular-mechanisms-for-inhibition-of-protein-aggregation
#2
Andrea Arsiccio, Roberto Pisano
PURPOSE: Surfactants are common stabilizers, often added to biopharmaceuticals formulations, but the mechanisms at the basis of their activity are unclear. The aim of this work is to provide insight into the molecular factors underlying surfactant effectiveness as protectants. METHODS: Molecular Dynamics simulations of human growth hormone (hGH) in the presence of Tween 20 were performed. The effect of Tween 20 was compared with the activity of commonly used protectants, such as the disaccharides...
April 10, 2018: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29609574/utility-of-serum-igf-1-for-diagnosis-of-growth-hormone-deficiency-following-traumatic-brain-injury-and-sport-related-concussion
#3
Kirstie Lithgow, Alex Chin, Chantel T Debert, Gregory A Kline
BACKGROUND: Growth hormone deficiency (GHD) is a potential consequence of traumatic brain injury (TBI), including sport-related concussion (SRC). GH stimulation testing is required for definitive diagnosis; however, this is resource intensive and can be associated with adverse symptoms or risks. Measurement of serum IGF-1 is more practical and accessible, and pituitary tumour patients with hypopituitarism and low serum IGF-1 have been shown to have a high probability of GHD. We aimed to evaluate IGF-1 measurement for diagnosing GHD in our local TBI population...
April 2, 2018: BMC Endocrine Disorders
https://www.readbyqxmd.com/read/29546461/structural-stability-of-recombinant-human-growth-hormone-r-hgh-as-a-function-of-polymer-surface-properties
#4
Vaishnavi Rohitkumar Shah, Pardeep K Gupta
PURPOSE: Despite the fact that r-hGH was first approved for use by FDA in 1995 and the conventional dosage form in the market has a limitation of daily subcutaneous injections, there remains a lack of sustained delivery system in the market. Nutropin depot, a long-acting dosage form of r-hGH was approved for marketing by FDA in 1999, however, it was discontinued in 2004. Since then, unabating efforts have been made to develop biodegradable polymer based formulations for r-hGH delivery...
March 15, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/29537382/a-novel-variant-c-97c-t-of-the-growth-hormone-releasing-hormone-receptor-gene-causes-isolated-growth-hormone-deficiency-type-ib
#5
Assimina Galli-Tsinopoulou, Eleni P Kotanidou, Aggeliki N Kleisarchaki, Rivka Kauli, Zvi Laron
Congenital Isolated growth hormone deficiency (IGHD) type Ib is an autosomal recessive genetic condition caused by mutations of GH1 or the GH releasing hormone receptor (GHRH-R) gene. Affected subjects present symptoms of GHD with low but detectable levels of GH, short stature and responsiveness to GH therapy. We describe a 13-month old girl with severe growth failure who showed a low hGH in response to 2 hGH provocative tests and a modest increase of IGF-I to an IGF-I generation test. Whole exome sequencing revealed a novel homozygous variant of the GHRH-R gene (c...
February 28, 2018: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/29529228/live-longer-better-the-historical-roots-of-human-growth-hormone-as-anti-aging-medicine
#6
Aimee Medeiros, Elizabeth Siegel Watkins
In recent years, historians have turned their attention to the emergence of anti-aging medicine, suggesting that this interest group coalesced in the wake of widespread availability of recombinant human growth hormone (HGH) after 1985. We take a longer view of modern anti-aging medicine, unearthing a nexus of scientific, medical, and cultural factors that developed over several decades in the twentieth century to produce circumstances conducive to the emergence of this medical sub-specialty established on the premise of the anti-aging effects of HGH...
February 24, 2018: Journal of the History of Medicine and Allied Sciences
https://www.readbyqxmd.com/read/29525202/a-comparison-of-the-acute-physiological-responses-to-bodypump%C3%A2-versus-iso-caloric-and-iso-time-steady-state-cycling
#7
Nigel Harris, Andrew Kilding, Shivani Sethi, Fabrice Merien, Jinger Gottschall
OBJECTIVES: Given apparent consumer interest in calorie counting and arguably inadequate understanding of the differential effects of exercise modality despite equivalent caloric expenditure, we sought to quantify and compare the acute physiological responses within and between a BODYPUMP™ (BP) group-fitness class and steady-state cycling (CARDIO), matched for caloric cost (iso-caloric) and time (iso-time). DESIGN: Acute cross-over study design. METHODS: Twelve healthy recreationally active females (30...
March 2, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29515055/prevalence-of-diverse-complications-and-its-association-with-karyotypes-in-japanese-adult-women-with-turner-syndrome-a-questionnaire-survey-by-the-foundation-for-growth-science
#8
Kunihiko Hanew, Toshiaki Tanaka, Reiko Horikawa, Tomonobu Hasegawa, Susumu Yokoya
The reported prevalence of complications in Turner Syndrome (TS) was highly variable because of the rarity and the limited numbers analyzed. Again, possible presence of other complications that are not described as specific for TS, is also speculated. To resolve these issues, a questionnaire survey was conducted in hGH treated 492 patients with adult TS (17-42 years). The possible association with these complications and karyotypes were also analyzed. The complications and their prevalence were as follows: chronic thyroiditis (25...
March 7, 2018: Endocrine Journal
https://www.readbyqxmd.com/read/29488103/multi-centre-phase-iv-trial-to-investigate-the-immunogenicity-of-a-new-liquid-formulation-of-recombinant-human-growth-hormone-in-adults-with-growth-hormone-deficiency
#9
G Johannsson, K Nespithal, U Plöckinger, V Alam, M McLean
PURPOSE: To investigate whether a new liquid formulation of recombinant human growth hormone (r-hGH) induces the production of binding antibodies (BAbs) in adults with congenital or adult-onset growth hormone deficiency (GHD). METHODS: Men or women aged 19-65 years with adult growth hormone deficiency who were r-hGH-naïve or had stopped treatment ≥ 1 month before screening were treated with between 0.15 and 0.30 mg/day r-hGH liquid formulation for 39 weeks...
February 27, 2018: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29391380/protein-enriched-milk-based-supplement-to-counteract-sarcopenia-in-acutely-ill-geriatric-patients-offered-resistance-exercise-training-during-and-after-hospitalisation-study-protocol-for-a-randomised-double-blind-multicentre-trial
#10
Josephine Gade, Anne Marie Beck, Christian Bitz, Britt Christensen, Tobias Wirenfeldt Klausen, Anders Vinther, Arne Astrup
INTRODUCTION: Age-related loss of muscle mass and strength, sarcopaenia, burdens many older adults. The process is accelerated with bed rest, protein intakes below requirements and the catabolic effect of certain illnesses. Thus, acutely ill, hospitalised older adults are particularly vulnerable. Protein supplementation can preserve muscle mass and/or strength and, combining this with resistance exercise training (RT), may have additional benefits. Therefore, this study investigates the effect of protein supplementation as an addition to offering RT among older adults while admitted to the geriatric ward and after discharge...
February 1, 2018: BMJ Open
https://www.readbyqxmd.com/read/29389044/synergistically-active-nico2-s4-nanoparticles-coupled-with-holey-defect-graphene-hydrogel-for-high-performance-solid-state-supercapacitors
#11
Sintayehu Nibret Tiruneh, Bong Kyun Kang, Sung Hoon Kwag, YoungHun Lee, MinSeob Kim, Dae Ho Yoon
Nickel cobalt sulfide nanoparticles embedded in holey defect graphene hydrogel (HGH) that exhibit highly porous structures and uniform nickel cobalt sulfide nanoparticle sizes are successfully prepared by a facile solvothermal-hydrothermal method. As an electrode material for supercapacitors, the as-prepared NiCo2 S4 @HGH shows ultra-high specific capacitances of 1000 F g-1 and 800 F g-1 at 0.5 and 6 A g-1 , respectively, owing to the outstanding electrical conductivity of HGH and high specific capacitance of NiCo2 S4 ...
February 1, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29343946/a-new-pen-device-for-injection-of-recombinant-human-growth-hormone-a-convenience-functionality-and-usability-evaluation-study
#12
Maritta Sauer, Carole Abbotts
Purpose: Adherence to recombinant human growth hormone (r-hGH) is critical to growth and other outcomes in patients with growth disorders, but the requirement for daily injections means that ease of use is an important factor. This study assessed the perceived ease of use and functionality of the prototype of a reusable pen injector (pen device) for r-hGH that incorporates several advanced features. Participants and methods: Semi-structured 60-minute qualitative interviews were conducted in 5 countries with 57 health care professionals (HCPs) and 30 patients with GH deficiency/caregivers administering r-hGH to patients, including children...
2018: Patient Preference and Adherence
https://www.readbyqxmd.com/read/29341939/the-quest-for-equivalence-of-test-results-the-pilgrimage-of-the-dutch-calibration-2-000-program-for-metrological-traceability
#13
REVIEW
Rob T P Jansen, Christa M Cobbaert, Cas Weykamp, Marc Thelen
Calibration 2.000 was initiated 20 years ago for standardization and harmonization of medical tests. The program also intended to evaluate adequate implementation of the In Vitro Diagnostics (IVD) 98/79/EC directive, in order to ensure that medical tests are fit-for-clinical purpose. The Calibration 2.000 initiative led to ongoing verification of test standardization and harmonization in the Netherlands using commutable external quality assessment (EQA)-tools and a type 1 EQA-design, where feasible. National support was guaranteed by involving all laboratory professionals as well as laboratory technicians responsible for EQA and quality officers...
January 17, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29299773/a-comparative-epidemiological-study-of-acute-renal-colic-presentations-to-emergency-departments-in-doha-qatar-and-melbourne-australia
#14
Sameer A Pathan, Biswadev Mitra, Zain A Bhutta, Isma Qureshi, Elle Spencer, Asmaa A Hameed, Sana Nadeem, Ramsha Tahir, Shahzad Anjum, Peter A Cameron
BACKGROUND: This study aimed to compare the epidemiology, clinical presentations, management, and outcomes of renal colic presentations in two major academic centers from geographically diverse populations: Qatar (a country in the Afro-Asian stone belt) and South-Eastern Australia (not within a stone belt). METHODS: We undertook a retrospective cohort study of patients with renal colic who presented to the Hamad General Hospital Emergency Department (HGH-ED), Qatar, and The Alfred ED, Melbourne, Australia, during a period of 1 year from August 1, 2012, to July 31, 2013...
January 3, 2018: International Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29283929/the-effect-of-three-different-maximal-concentric-velocity-squat-protocols-on-mapk-phosphorylation-and-endocrine-responses
#15
Rebecca A Kudrna, Andrew C Fry, Justin X Nicoll, Phillip M Gallagher, Michael R Prewitt
The purpose of this study was to determine the effect of three different back squat protocols on intra-cellular signaling, endocrine responses, and power fatigue. Nine recreationally trained males (X±SD; age: 21.4±0.6yrs; height: 177.8±5.1cm; weight: 78.7±9.7kg), completed three maximal concentric velocity squat protocols in a randomized order. Testing protocols consisted of 5 sets of 10 repetitions at 30% of 1RM; 5 sets of 5 repetitions at 70% of 1RM; and 5 sets of 3 repetitions at 90% of 1RM. Average system power for each set was obtained with a tethered external dynamometer...
December 27, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29223399/ectopic-serotonin-production-in-%C3%AE-cell-specific-transgenic-mice
#16
Hyeongseok Kim, Hyunki Kim, Kyuho Kim, Michael S German, Hail Kim
Genetically modified mice have been widely used in the field of β-cell research. However, analysis of results gathered using genetically modified organisms should be interpreted carefully as the results may be confounded by several factors. Here, we showed the ectopic serotonin (5-HT) production in β-cells of RIP-CreMgn , MIP-GFP, and MIP-Cre/ERT mice. These mice contained a human growth hormone (hGH) cassette to enhance transgene expression and hGH expression and Stat5 phosphorylation were detected in pancreatic islets of these mice...
January 8, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29209767/neuropathology-of-iatrogenic-creutzfeldt-jakob-disease-and-immunoassay-of-french-cadaver-sourced-growth-hormone-batches-suggest-possible-transmission-of-tauopathy-and-long-incubation-periods-for-the-transmission-of-abeta-pathology
#17
Charles Duyckaerts, Véronique Sazdovitch, Kunie Ando, Danielle Seilhean, Nicolas Privat, Zehra Yilmaz, Laurène Peckeu, Elodie Amar, Emmanuel Comoy, Aleksandra Maceski, Sylvain Lehmann, Jean-Pierre Brion, Jean-Philippe Brandel, Stéphane Haïk
Abeta deposits and tau pathology were investigated in 24 French patients that died from iatrogenic Creutzfeldt-Jakob disease after exposure to cadaver-derived human growth hormone (c-hGH) in the 1980s. Abeta deposits were found only in one case that had experienced one of the longest incubation periods. Three cases had also intracellular tau accumulation. The analysis of 24 batches of c-hGH, produced between 1974 and 1988, demonstrated for the first time the presence of Abeta and tau contaminants in c-hGH (in 17 and 6 batches, respectively)...
February 2018: Acta Neuropathologica
https://www.readbyqxmd.com/read/29200633/effects-of-silver-gymnastic-exercises-on-aging-related-hormones-in-elderly-women-living-alone
#18
Sangsoo Kim, Sungbum Ju
[Purpose] The purpose of this study was to investigate the effect of silver gymnastic exercises on aging-related hormones in elderly women living alone. [Subjects and Methods] The study group consisted of 20 elderly women living alone who performed the silver gymnastic exercises for 12 weeks. Blood samples were obtained for measurement of aging-related hormones (human growth hormone [HGH] and estrogen). [Results] HGH and estrogen levels increased significantly after the exercise program as compared to before the program...
November 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29073481/human-placental-growth-hormone-in-ectopic-pregnancy-detection-in-maternal-blood-immunohistochemistry-and-potential-clinical-implication
#19
Christoph Hübener, Martin Bidlingmaier, Zida Wu, Joachim Diebold, Christian J Strasburger, Sven Mahner, Uwe Hasbargen, Maria Delius
OBJECTIVE: To investigate human placental growth hormone (hGH-V) in ectopic pregnancy (EP): detection in maternal blood, correlation with immunohistochemistry and possible role as a marker for the course of EP. DESIGN: Women presenting in the outpatient or emergency department of a tertiary care university hospital with a positive pregnancy test and strong suspicion of EP by ultrasound and/or symptoms were eligible for the study (n=70). Tissue specimens from the surgically treated patients (n=50) were examined by histopathology as well as by a hGH-V specific immohistochemistry set-up...
December 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/29038330/can-growth-hormone-treatment-improve-growth-in-children-with-severe-growth-failure-due-to-anorexia-nervosa-a-preliminary-pilot-study
#20
Juliane Léger, Anne Fjellestad-Paulsen, Anne Bargiacchi, Catherine Doyen, Emmanuel Ecosse, Jean-Claude Carel, Marie-France Le Heuzey
BACKGROUND/AIMS: Growth failure is a difficult but key aspect of care in children with anorexia nervosa (AN). The effects of hGH therapy have not been studied. The aim was to investigate the effect of hGH treatment on height velocity (HV) in children with AN. METHODS: We carried out a retrospective observational study. Ten girls diagnosed with AN at 10.0 ± 1.9 years, with prolonged severe growth failure (HV < 2.5 cm/year for at least 18 months) at the age of 13...
November 2017: Endocrine Connections
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