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https://www.readbyqxmd.com/read/28319665/synthesis-of-four-disulfide-insulin-analogs-via-sequential-disulfide-bond-formation
#1
Fangzhou Wu, John P Mayer, Vasily G Gelfanov, Fa Liu, Richard D DiMarchi
Naturally-occurring, multiple cysteine-containing peptides are a structurally unique class of compounds with a wide range of therapeutic and diagnostic applications. The development of reliable, and precise chemical methods for their preparation is of paramount importance to facilitate exploration of their utility. We report an efficient approach based on stepwise, sequentially directed disulfide bond formation, exemplified here by the synthesis of four-disulfide bond containing insulin analogs. The cysteine protections consisted of tert-butylthiol (StBu), thiol-trimethoxyphenyl (STmp), trityl (Trt), 4-methoxytrityl (Mmt), S-acetamidomethyl (Acm) and tert-butyl (tBu)...
March 20, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28317081/pharmacogenetic-predictors-of-treatment-related-toxicity-among-children-with-acute-lymphoblastic-leukemia
#2
REVIEW
Rochelle R Maxwell, Peter D Cole
PURPOSE OF REVIEW: The aim of this review is to summarize the most recent and most robust pharmacogenetic predictors of treatment-related toxicity (TRT) in childhood acute lymphoblastic leukemia (ALL). RECENT FINDINGS: Multiple studies have examined the toxicities of the primary chemotherapeutic agents used to treat childhood ALL in relation to host genetic factors. However, few results have been replicated independently, largely due to cohort differences in ancestry, chemotherapy treatment protocols, and definitions of toxicities...
March 20, 2017: Current Hematologic Malignancy Reports
https://www.readbyqxmd.com/read/28290190/disruption-in-bone-marrow-fat-may-attenuate-testosterone-action-on-muscle-size-after-spinal-cord-injury-a-case-report
#3
Ashraf S Gorgey, Pamela D Moore, Rodney C Wade, Ranjodh S Gill, Timothy Lavis, Robert A Adler
BACKGROUND: Mesenchymal stem cells can be differentiated into muscle satellite cells. Testosterone replacement therapy (TRT) promotes the differentiation of satellite cells into muscle cells. CASE REPORT: A 31 year old male with a T4 complete chronic spinal cord injury (SCI) had fixation for a mid-shaft fracture of the left femur. The participant received transdermal testosterone patches (4mg/day) daily for 16 weeks. Skeletal muscle and yellow bone marrow adiposity cross-sectional areas (CSAs) of both thighs were measured using magnetic resonance imaging...
March 13, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28282997/is-there-a-protective-role-of-testosterone-against-high-grade-prostate-cancer-incidence-and-severity-of-prostate-cancer-in-553-patients-who-underwent-prostate-biopsy-a-prospective-data-register
#4
Aksam Yassin, Mahmoud Salman, Riadh A Talib, Dany-Jan Yassin
This study investigated the role of testosterone replacement therapy (TRT) in prostate safety and cancer progression. A cohort of 553 patients, 42 treated and 162 untreated hypogonadal men, and 349 eugonadal men were included. Pathological analysis of prostate biopsies examining the incidence and severity of PCa revealed that: 16.7% of treated hypogonadal men had a positive biopsy, a Gleason score of ≤6 in 71.4% and >6 in 28.6% of men, a predominant score of 3 and tumour staging of II in 85.7% men; 51...
March 10, 2017: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/28281919/retraumatization-mediates-the-effect-of-adverse-childhood-experiences-on-clinical-training-related-secondary-traumatic-stress-symptoms
#5
Lisa D Butler, Eugene Maguin, Janice Carello
Previous research (AuthorCitation1) has found that exposure to trauma-related material in graduate clinical coursework and field training can put students at risk for reactivations of feelings/memories from negative past experiences (retraumatization) and for secondary traumatic stress (STS) symptoms. The present report sought to examine the role, if any, of adverse childhood experiences (ACEs) in these outcomes. Using the AuthorCitaiton2 sample, we examined: (1) rates of ACEs in 195 graduate social work students, (2) whether the total number of ACEs was associated with training-related retraumatization (TRT) and/or STS symptoms, and (3) if TRT mediated the relationship between ACEs and STS symptoms...
March 10, 2017: Journal of Trauma & Dissociation
https://www.readbyqxmd.com/read/28263152/-testosterone-replacement-therapy-for-hypogonadism-in-men-with-prostate-cancer
#6
Christian F S Jensen, Mikkel Fode, Peter Østergren, Jens Sønksen
Hypogonadism and prostate cancer (PCa) often coincide with increasing age. Recent reviews have found no evidence to suggest an increased risk of developing PCa with testosterone replacement therapy (TRT). The same lack of PCa risk is found in studies looking at men receiving TRT after radical prostatectomy for PCa. Reports on TRT in men on active surveillance are very few. In summary, current evidence does not support an association between TRT and an increased risk of PCa. Nevertheless, sufficiently powered trials with longer follow-up are warranted before making final conclusions...
February 27, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28258556/klinefelter-syndrome-cardiovascular-abnormalities-and-metabolic-disorders
#7
REVIEW
A E Calogero, V A Giagulli, L M Mongioì, V Triggiani, A F Radicioni, E A Jannini, D Pasquali
Klinefelter syndrome (KS) is one of the most common genetic causes of male infertility. This condition is associated with much comorbidity and with a lower life expectancy. The aim of this review is to explore more in depth cardiovascular and metabolic disorders associated to KS. KS patients have an increased risk of cerebrovascular disease (standardized mortality ratio, SMR, 2.2; 95% confidence interval, CI, 1.6-3.0), but it is not clear whether the cause of the death is of thrombotic or hemorrhagic nature...
March 3, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28245889/comparison-of-different-extenders-on-the-recovery-and-longevity-of-epididymal-sperm-from-spix-s-yellow-toothed-cavies-galea-spixii-wagler-1831
#8
Andréia Maria da Silva, Patrícia Cunha Sousa, Lívia Batista Campos, José Artur Brilhante Bezerra, Arthur Emannuel de Araújo Lago, Moacir Franco de Oliveira, Alexandre Rodrigues Silva
The aim of this study was to evaluate the performance of cavy (Galea spixii) epididymal sperm following addition to TES or TRIS extenders and using a thermal resistance test (TRT), as well as fluorescence analysis as a complementary method to predict the viability of these gametes. Nine testicle-epididymis complexes were used for sperm collection using a flotation method. Epididymis tails were sliced and one was immersed in 3 ml of TRIS buffer, and the other in 3 ml of TES, for 5 min. After sperm recovery, the samples were subjected to a TRT which involved incubation in a water bath at 37°C for 3 h...
March 1, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/28245874/timing-of-thoracic-radiotherapy-in-the-treatment-of-extensive-stage-small-cell-lung-cancer-important-or-not
#9
Jing Luo, Liming Xu, Lujun Zhao, Yuanjie Cao, Qingsong Pang, Jun Wang, Zhiyong Yuan, Ping Wang
BACKGROUND: This study evaluated the prognosis of patients with extensive-stage small-cell lung cancer (ES-SCLC) that may be associated with timing of thoracic radiotherapy (TRT). METHODS: ES-SCLC patients (n = 232) without progression were retrospectively analyzed after first-line induction chemotherapy. Patients in the TRT group were stratified as early-TRT (ERT; ≤3 cycles of induction chemotherapy received prior to TRT, n = 65) or late-TRT (LRT; >3 cycles, n = 122)...
February 28, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28241244/association-of-testosterone-replacement-with-cardiovascular-outcomes-among-men-with-androgen-deficiency
#10
T Craig Cheetham, JaeJin An, Steven J Jacobsen, Fang Niu, Stephen Sidney, Charles P Quesenberry, Stephen K VanDenEeden
Importance: Controversy exists regarding the safety of testosterone replacement therapy (TRT) following recent reports of an increased risk of adverse cardiovascular events. Objective: To investigate the association between TRT and cardiovascular outcomes in men with androgen deficiency. Design, Setting, and Participants: A retrospective cohort study was conducted within an integrated health care delivery system. Men at least 40 years old with evidence of androgen deficiency either by a coded diagnosis and/or a morning serum total testosterone level of less than 300 ng/dL were included...
February 21, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28238756/gaps-in-patient-knowledge-about-risks-and-benefits-of-testosterone-replacement-therapy
#11
Kirven Gilbert, Cara B Cimmino, Lucius C Beebe, Akanksha Mehta
OBJECTIVE: To assess patient knowledge of the symptoms of testosterone deficiency, and the benefits and risks associated with testosterone replacement therapy (TRT). METHODS: An anonymous, 10-question multiple choice survey was administered to consecutive patients presenting for urologic evaluation at an academic medical center, from December 2015 to April 2016. The survey included questions about perceived symptoms of testosterone deficiency, perceived benefits and risks associated with TRT, whether respondents had a diagnosis of testosterone deficiency, and whether they were interested in receiving TRT...
February 24, 2017: Urology
https://www.readbyqxmd.com/read/28230890/effect-of-testosterone-replacement-therapy-on-vitamin-d-and-fgf-23-levels-in-congenital-hypogonadism
#12
Cem Haymana, Alper Sonmez, Aydogan Aydogdu, Serkan Tapan, Yalcin Basaran, Coskun Meric, Kamil Baskoy, Abdullah Taslipinar, Mahmut Ilker Yilmaz, Omer Azal
INTRODUCTION: Patients with hypogonadism are at increased risk of cardiac and metabolic diseases and osteoporosis. Vitamin D and Fibroblast growth factor-23 (FGF-23) play role in the regulation of bone mineral metabolism and endothelial functions. Low vitamin D levels are reported in hypogonadism, while there is no data about the effect of testosterone replacement therapy (TRT). We investigated the effect of TRT on vitamin D and FGF-23 levels along with endothelial functions and insulin resistance in hypogonadal patients...
February 23, 2017: Endokrynologia Polska
https://www.readbyqxmd.com/read/28228646/readability-credibility-and-quality-of-patient-information-for-hypogonadism-and-testosterone-replacement-therapy-on-the-internet
#13
J A McBride, C C Carson, R M Coward
The incidence of hypogonadism and use of testosterone replacement therapy (TRT) are rising, while data evaluating the complexity and quality of health-care information available to patients on the Internet for hypogonadism or TRT are lacking. This study focuses on characterizing the readability, credibility and quality of patient-centered information for hypogonadism on the Internet. A Google search was performed to identify top-ranked websites offering patient-centered information on hypogonadism and TRT. Readability was quantified by reading grade level using several validated instruments...
February 23, 2017: International Journal of Impotence Research
https://www.readbyqxmd.com/read/28216289/biomechanical-comparison-of-fixed-loop-and-adjustable-loop-cortical-suspensory-devices-for-metaphyseal-femoral-sided-soft-tissue-graft-fixation-in-anatomic-anterior-cruciate-ligament-reconstruction-using-a-porcine-model
#14
Darin D Nye, W Ryan Mitchell, Wei Liu, Roger V Ostrander
PURPOSE: To compare the displacement, stiffness, and ultimate failure load of a fixed-loop cortical suspensory device with 2 adjustable-loop devices when positioned on metaphyseal bone. METHODS: Thirty devices (10 of each device) were positioned on the metaphyseal cortex of 30 porcine femora simulating anatomic anterior cruciate ligament femoral tunnel placement. Bovine tendons were used for soft tissue grafts, and the constructs were then cycled 1,000 times and pulled to failure, measuring displacement, stiffness, and failure load...
February 16, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28207525/plasma-levels-of-soluble-programmed-death-ligand-1-may-be-associated-with-overall-survival-in-nonsmall-cell-lung-cancer-patients-receiving-thoracic-radiotherapy
#15
Jing Zhao, Peng Zhang, Jianhua Wang, Qingsong Xi, Xueqi Zhao, Minghua Ji, Guangyuan Hu
Immune-checkpoint signaling plays an important role in immunosuppression of tumors. We aimed to investigate the association of soluble programmed death-ligand 1 (sPD-L1) level in plasma with overall survival (OS) in locally advanced or inoperable nonsmall-cell lung cancer (NSCLC) patients treated with thoracic radiotherapy (TRT). We used ELISA to evaluate the sPD-L1 levels at diagnosis and during TRT in 126 clinically inoperable NSCLC patients. OS rates were followed up and recorded. SPSS software and GraphPad Prism 5 were used for statistics...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28202344/testosterone-replacement-therapy-and-components-of-the-metabolic-syndrome
#16
REVIEW
James Anaissie, Natalie H Roberts, Ping Wang, Faysal A Yafi
INTRODUCTION: The prevalence of metabolic syndrome (MetS) is rapidly increasing in the United States and, because of its strong association with male hypogonadism, has become a significant topic of interest in the sexual medicine community. At the center of this conversation is the efficacy and safety of testosterone replacement therapy (TRT) as a therapeutic option for HG and MetS. AIM: To provide a review of the current literature pertaining to TRT and MetS. METHODS: A thorough literature review was performed to review the relation between TRT and MetS using the PubMed online database from 1976 through 2016 with the keywords testosterone, hypogonadism, metabolic syndrome, and testosterone therapy...
February 12, 2017: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/28201827/hypogonadotropic-hypogonadism-in-non-functioning-pituitary-adenomas-impact-of-intervention
#17
Diana Margarida Monteiro, Paula Freitas, Romana Vieira, Davide Carvalho
To determine the prevalence of hypogonadotropic hypogonadism (HH) among patients with non-functioning pituitary adenomas (NFPA) and the post-surgery outcome on pituitary gonadotropins secretion (PGS); to determine the prevalence of erectile dysfunction (ED) on male patients with NFPA, to evaluate the impact of testosterone replacement therapy (TRT) in those with HH. Retrospective evaluation of gonadal function in 109 NFPA patients (45 males), with a mean age of 51.8 years, diagnosed on the last 10 years. ED questionnaire applied to 34 male patients...
February 15, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28164664/serum-amyloid-p-component-level-may-be-a-biomarker-for-lung-toxicities-and-overall-survival-after-thoracic-radiotherapy-for-non-small-cell-lung-cancer
#18
Jing Zhao, Alexander Chi, Rui Mao, Guangyuan Hu, Minghua Ji
BACKGROUND: Serum amyloid P-component (SAP) contributes to the clearance of apoptotic cells. As one of the main acute-phase reactants, SAP regulates key aspects of inflammation and sets a threshold for immune cell activation. This study aimed to investigate the association of SAP levels with symptomatic lung toxicities after thoracic radiotherapy (TRT) and overall survival (OS) in non-small lung cancer (NSCLC) patients. METHODS: The SAP level at diagnosis and during TRT was evaluated by ELISA in 113 clinically inoperable NSCLC patients...
November 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28155104/estimating-sleep-time-from-non-eeg-based-psg-signals-in-the-diagnosis-of-sleep-disordered-breathing
#19
M B Norman, C E Sullivan
PURPOSE: The purpose of this study was to use non-EEG PSG signals to estimate TST in order to diagnose SDB with a greater sensitivity than type 3 device methodology that relies on TRT. METHODS: Movement patterns were obtained from the thoracoabdominal signals of adult PSG recordings (n = 60) in the laboratory and the home. Parameters obtained allowed, with 95% certainty, identification of sleep and wake based on the duration of movements and quiescent time (Qd)...
February 3, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28150377/romiplostim-for-therapy-related-thrombocytopenia-in-pediatric-malignancies
#20
Amanda E Jacobson, Nilay Shah, Bhuvana A Setty
Therapy-related thrombocytopenia (TRT), due to chemotherapy and/or radiation therapy, is common with pediatric cancer treatments, and it can result in dose reductions and therapy delays. Romiplostim, a thrombopoietin mimetic, is efficacious as a second-line treatment for immune thrombocytopenia in children and for TRT in adult cancer patients. However, there are no data for its use for TRT in children. We report a case series of five children treated for solid tumors where romiplostim was used without adverse effects to successfully resolve and prevent therapy-limiting refractory TRT...
February 2, 2017: Pediatric Blood & Cancer
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