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https://www.readbyqxmd.com/read/28088261/parquetina-nigrescens-leaves-chemical-profile-and-influence-on-the-physical-and-biochemical-indices-of-sexual-activity-of-male-wistar-rats
#1
Omowumi Titilola Kayode, Musa Toyin Yakubu
OBJECTIVE: The leaves of Parquetina nigrescens have been claimed in folk medicine to be useful for managing sexual dysfunction, but there is inadequate scientific evidence for this claim. This investigation was conducted to assess the effects of aqueous leaf extract of Parquetina nigrescens (AEPN) in rats induced with sexual dysfunction. METHODS: Male rats were allocated into various groups after being induced into sexual dysfunction with paroxetine hydrochloride...
January 2017: Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28087978/identification-of-gonadotropin-releasing-hormone-metabolites-in-greyhound-urine
#2
David Palmer, Katie Rademaker, Ingrid Martin, Joan Hessell, Rob Howitt
Gonadotropin-releasing hormone (GnRH) is a 10-residue peptide hormone that induces secretion of luteinizing hormone (LH) and follicle-stimulating hormone into the blood from the pituitary gland. In males, LH acts on the testes to produce testosterone. The performance enhancing potential of testosterone makes administration of exogenous GnRH a concern in sports doping control. Detection of GnRH abuse is challenging owing to its rapid clearance from the body and degradation in urine. Following recent investigations of GnRH abuse in racing greyhounds in New Zealand, we carried out a GnRH administration study in greyhounds in an attempt to identify GnRH metabolites that might provide more facile detection of GnRH abuse; little information is available on in vivo metabolites of exogenous GnRH in any species and none in dogs...
January 14, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28087972/lack-of-effect-of-oral-cabotegravir-on-the-pharmacokinetics-of-a-levonorgestrel-ethinyl-estradiol-containing-oral-contraceptive-in-healthy-adult-females
#3
C Trezza, S L Ford, E Gould, Y Lou, C Huang, J M Ritter, A M Buchanan, W Spreen, P Patel
AIM(S): This study aimed to investigate whether cabotegravir (CAB), an integrase inhibitor in development for treatment and prevention of HIV-1, influences the pharmacokinetics (PK) of a levonorgestrel (LNG) and ethinyl estradiol (EE)-containing oral contraceptive (OC) in healthy women. METHODS: In this open-label, fixed-sequence crossover study, healthy female subjects received LNG 0.15 mg/EE 0.03 mg tablet once daily Days 1-10 alone and with oral CAB 30 mg once daily Days 11-21...
January 14, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28081535/efficacy-and-safety-of-continuous-subcutaneous-infusion-of-recombinant-human-gonadotropins-for-congenital-micropenis-during-early-infancy%C3%A2
#4
Athanasia Stoupa, Dinane Samara-Boustani, Isabelle Flechtner, Graziella Pinto, Isabelle Jourdon, Laura González-Briceño, Maud Bidet, Kathleen Laborde, Didier Chevenne, Anne-Elodie Millischer, Henri Lottmann, Thomas Blanc, Yves Aigrain, Michel Polak, Jacques Beltrand
BACKGROUND: Early postnatal administration of gonadotropins to infants with congenital hypogonadotropic hypogonadism (CHH) can mimic minipuberty, thereby increasing penile growth. We assessed the effects of gonadotropin infusion on stretched penile length (SPL) and hormone levels in infants with congenital micropenis. METHODS: Single-center study including 6 males with micropenis in case of isolated CHH (n = 4), panhypopituitarism (n = 1), and partial androgen insensitivity syndrome (PAIS; n = 1)...
January 12, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28079691/lutein-and-brilliant-blue-based-dye-for-donor-preparation-and-transplantation-in-descemet-membrane-endothelial-keratoplasty
#5
Sebastian Siebelmann, Mario Matthaei, Robert Hörster, Claus Cursiefen, Björn Bachmann
PURPOSE: Trypan blue (TB) is used for visualization of the endothelium-Descemet membrane graft during Descemet membrane endothelial keratoplasty (DMEK). However, TB is assumed to have a dose-dependent toxic effect on the corneal endothelium. We retrospectively compared a lutein/zeaxanthin and Brilliant Blue (LZ/BB)-based dye for preparation and transplantation of the graft in DMEK to TB. METHODS: In 20 patients, a dye composed of 1% LZ /0.025% BB was used, and in 22 patients, 0...
January 11, 2017: Cornea
https://www.readbyqxmd.com/read/28079511/circulating-carotenoids-and-subsequent-risk-of-rheumatoid-arthritis-in-women
#6
Yang Hu, Jing Cui, Jeffrey A Sparks, Susan Malspeis, Karen H Costenbader, Elizabeth W Karlson, Bing Lu
OBJECTIVES: The aim of the present study was to examine the associations between circulating carotenoids and future risk of rheumatoid arthritis (RA). METHODS: We conducted a nested case-control study consisting of 227 incident RA cases and 671 matched controls with prospectively measured plasma carotenoids (α-carotene, β-carotene, β-cryptoxanthin, lycopene and lutein/zeaxanthin) levels in the Nurses' Health Study (NHS) and Nurses' Health Study II (NHS II). Each incident RA case was matched with 3 healthy controls...
January 4, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28078843/association-between-expression-of-cumulus-expansion-markers-and-real-time-proliferation-of-porcine-follicular-granulosa-cells-in-a-primary-cell-culture-model
#7
S Ciesiółka, J Budna, A Bryja, W Kranc, A Chachuła, M Dyszkiewicz-Konwińska, H Piotrowska, D Bukowska, P Antosik, M Bruska, K P Brüssow, M Nowicki, M Zabel, B Kempisty
Folliculogenesis is a compound process that involves both ovarian follicle growth and oocyte development, which is tightly attached to the follicular wall. During this process, cells that form the follicle structure undergo substantial morphological and molecular modifications that finally lead to differentiation and specialization of ovarian follicular cells. The differentiation of ovarian cells encompasses formation of follicle, which is composed of theca (TCs), mural granulosa (GCs), and cumulus cells (CCs)...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28078216/testosterone-replacement-therapy-role-of-pituitary-and-thyroid-in-diagnosis-and-treatment
#8
REVIEW
Megan Crawford, Laurence Kennedy
Crosstalk among hormones characterizes endocrine function, and assessment of the hypogonadal man should take that into consideration. In men for whom testosterone deficiency is a concern, initial evaluation should include a thorough history and physical exam in which other endocrinopathies are being considered. Hypogonadism can be associated with both pituitary and thyroid dysfunction, for which appropriate biochemical evaluation should be undertaken in certain clinical scenarios. If low serum testosterone is confirmed measurement of luteinizing and follicle stimulating hormones (LH and FSH respectively) is essential to establish whether the hypogonadism is primary or secondary...
December 2016: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28077734/intake-of-up-to-3-eggs-per-day-is-associated-with-changes-in-hdl-function-and-increased-plasma-antioxidants-in-healthy-young-adults
#9
Diana M DiMarco, Gregory H Norris, Courtney L Millar, Christopher N Blesso, Maria Luz Fernandez
BACKGROUND: HDL function may be more important than HDL concentration in determining risk for cardiovascular disease. In addition, HDL is a carrier of carotenoids and antioxidant enzymes, which protect HDL and LDL particles against oxidation. OBJECTIVE: The goal of this study was to determine the impact of consuming 0-3 eggs/d on LDL and HDL particle size, HDL function, and plasma antioxidants in a young, healthy population. METHODS: Thirty-eight healthy men and women [age 18-30 y, body mass index (in kg/m(2)) 18...
January 11, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28077499/dynamic-gnrh-and-hcg-testing-establishment-of-new-diagnostic-reference-levels
#10
A Kirstine Bang, Loa Nordkap, Kristian Almstrup, Lærke Priskorn, Jørgen Holm Petersen, Ewa Rajpert-De Meyts, Anna-Maria Andersson, Anders Juul, Niels Joergensen
: 1. OBJECTIVE: Gonadotropin-releasing hormone (GnRH) and Human Chorionic Gonadotropin (hCG) stimulation-tests may be used to evaluate the pituitary and testicular capacity. Our aim was to evaluate changes in follicular-stimulating hormone (FSH), luteinizing hormone (LH) and Testosterone after GnRH and hCG stimulation in healthy men, and assess the impact of six single nucleotide polymorphisms on the responses. 2. DESIGN: GnRH- and hCG-stimulation tests were performed on 77 healthy men, 18-40 years (reference group) at a specialized andrology referral center...
January 11, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28075370/effect-of-carotenoid-supplemented-formula-on-carotenoid-bioaccumulation-in-tissues-of-infant-rhesus-macaques-a-pilot-study-focused-on-lutein
#11
Sookyoung Jeon, Martha Neuringer, Emily E Johnson, Matthew J Kuchan, Suzette L Pereira, Elizabeth J Johnson, John W Erdman
Lutein is the predominant carotenoid in the developing primate brain and retina, and may have important functional roles. However, its bioaccumulation pattern during early development is not understood. In this pilot study, we investigated whether carotenoid supplementation of infant formula enhanced lutein tissue deposition in infant rhesus macaques. Monkeys were initially breastfed; from 1 to 3 months of age they were fed either a formula supplemented with lutein, zeaxanthin, β-carotene and lycopene, or a control formula with low levels of these carotenoids, for 4 months (n = 2/group)...
January 10, 2017: Nutrients
https://www.readbyqxmd.com/read/28074679/vitamin-d-treatment-improves-levels-of-sexual-hormones-metabolic-parameters-and-erectile-function-in-middle-aged-vitamin-d-deficient-men
#12
Onder Canguven, Raidh A Talib, Walid El Ansari, Dany-Jan Yassin, Abdullah Al Naimi
BACKGROUND: The associations between serum vitamin D (VD), serum testosterone (TT) and metabolic syndrome are complex and with limited published research, particularly on the effects of VD treatment on sexual hormones, erectile function and the metabolic syndrome. OBJECTIVES: This study assessed whether a monthly high dose VD treatment for 12 months in VD deficient middle-aged men was associated with: changes in levels of sexual hormones, improvement of diabetes control and metabolic syndrome components, better erectile function [International Index of Erectile Function (IIEF)-5 questionnaire]; and changes in a prostate marker...
January 11, 2017: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/28073130/testosterone-plasma-concentration-is-associated-with-insulin-resistance-in-male-hypertensive-patients
#13
Gian Piero Carnevale Schianca, Gian Paolo Fra, Fabio Brustia, Mattia Bellan, Alice Pirovano, Alessandro Gualerzi, Michela Gentile, Antonello Gibbin, Mirta Menegatti, Ettore Bartoli, Mario Pirisi
Background: Low testosterone levels are a common finding among men with Type 2 Diabetes Mellitus (T2DM) and are inversely related to insulin resistance. Whether this relationship holds true in patients with hypertension, but normal glucose tolerance or prediabetes, is unclear. Methods: We recruited 87 male outpatients with essential arterial hypertension, aged 35-70 years. Anthropometric data were collected, an Oral Glucose Tolerance Test (OGTT) performed, and the homeostasis model assessment of insulin resistance (HOMA-IR) score calculated...
January 10, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28071011/the-effects-of-a-low-calorie-diet-or-an-isocaloric-diet-combined-with-metformin-on-sex-hormones-in-obese-women-of-child-bearing-age
#14
Ewelina Swora-Cwynar, Magdalena Kujawska-Łuczak, Joanna Suliburska, Julita Reguła, Angelika Kargulewicz, Matylda Kręgielska-Narożna, Emilia Marcinkowska, Alina Kanikowska, Marzena Bielas, Marian Grzymisławski, Paweł Bogdański
BACKGROUND: The influence of weight loss treatment on sex hormones profile has been studied mainly in women with polycystic ovary syndrome (PCOS), but in obese premenopausal women without PCOS it still remains unclear. The aim of the study was to evaluate the effect of two approaches to obesity treatment on the serum level of sex hormones in obese women of child-bearing age without PCOS. METHODS: 77 obese Caucasian women (aged 31.2 ±8.3 years) were randomized into two groups: 39 women received a low-calorie diet (LC) and 38 received an isocaloric diet plus metformin (IM), for 12 weeks...
April 2016: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28070708/delayed-treatment-of-undescended-testes-may-promote-hypogonadism-and-infertility
#15
Julia Rohayem, Alessandra Luberto, Eberhard Nieschlag, Michael Zitzmann, Sabine Kliesch
CONTEXT: Undescended testes at birth may be caused by testosterone deficiency during fetal development. It is unclear whether the process of failed descent contributes to permanent endocrine impairment. OBJECTIVES: To evaluate the impact of age at treatment of undescended testes on endocrine and spermatogenic testicular function in middle-aged men. PATIENTS AND METHODS: Reproductive hormone and semen data of 357 men with previously undescended testes were evaluated with respect to age at correction of testicular position and compared to those of 709 controls with eutopic testes at birth and normozoospermia...
January 9, 2017: Endocrine
https://www.readbyqxmd.com/read/28070327/nutritional-antioxidative-and-antimicrobial-analysis-of-the-mediterranean-hackberry-celtis-australis-l
#16
Ajda Ota, Ana Miklavčič Višnjevec, Rajko Vidrih, Željko Prgomet, Marijan Nečemer, Janez Hribar, Nina Gunde Cimerman, Sonja Smole Možina, Milena Bučar-Miklavčič, Nataša Poklar Ulrih
Celtis australis is a deciduous tree commonly known as Mediterranean hackberry or the European nettle tree. The fruit of hackberry are seldom used for nutritional purposes. The nutritional and physicochemical properties of ripe hackberry fruit from Istria (Marasi village near Vrsar, Croatia) were determined, including water, total fiber, protein, vitamin, mineral, and phenolic contents. This analysis demonstrates that the hackberry fruit is a valuable source of dietary fiber, protein, and vitamins, and of pigments such as lutein, β-carotene, zeaxanthin, and tocopherols...
January 2017: Food Science & Nutrition
https://www.readbyqxmd.com/read/28070322/carotenoid-profiling-of-the-leaves-of-selected-african-eggplant-accessions-subjected-to-drought-stress
#17
Elias K Mibei, Jane Ambuko, James J Giovannoni, Arnold N Onyango, Willis O Owino
African eggplants (Solanum aethiopicum and S. macrocarpon) are among the most economically important and valuable vegetable and fruit crops. They are a major source of biologically active nutritional substances and metabolites which are essential for plant growth, development, stress adaptation and defense. Among these metabolites are the carotenoids which act as accessory pigments for photosynthesis and precursor to plant hormones. Though African eggplants are known to be resistant to various abiotic stresses, the effect of these stresses on secondary metabolites has not been well defined...
January 2017: Food Science & Nutrition
https://www.readbyqxmd.com/read/28070105/%C3%AE-lipoic-acid-potentially-targets-amp-activated-protein-kinase-and-energy-production-in-the-fetal-brain-to-ameliorate-dioxin-produced-attenuation-in-fetal-steroidogenesis
#18
Tomoki Takeda, Yuki Matsuo, Kyoko Nishida, Akihisa Fujiki, Yukiko Hattori, Takayuki Koga, Yuji Ishii, Hideyuki Yamada
Our previous studies demonstrated that treating pregnant rats with dioxins, including 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), targets the pituitary expression of luteinizing hormone (LH) to attenuate testicular steroidogenesis in fetuses, resulting in the imprinting of sexual immaturity of the offspring after reaching maturity. Furthermore, we found that although TCDD disturbs the tricarboxylic acid (TCA) cycle in the fetal hypothalamus, maternal co-treatment with α-lipoic acid (α-LA), a cofactor of the TCA cycle, restores a TCDD-produced reduction in the LH-evoked steroidogenesis as well as the TCA cycle activity in fetuses...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28070055/superovulatory-responses-in-cynomolgus-monkeys-macaca-fascicularis-depend-on-the-interaction-between-donor-status-and-superovulation-method-used
#19
Ji-Su Kim, Seung-Bin Yoon, Kang-Jin Jeong, Bo-Woong Sim, Seon-A Choi, Sang-Il Lee, Yeung Bae Jin, Bong-Seok Song, Sang-Rae Lee, Sun-Uk Kim, Kyu-Tae Chang
The current study was performed to investigate the effect of oocyte donor status, including age and body weight, on metaphase II (MII) oocyte recovery using two superovulation methods in cynomolgus monkeys. The use of Method A [recombinant gonadotrophin (75 IU/kg, 3×, 3-day intervals) and human chorionic gonadotropin (hCG)] led to great increases in ovary size and the mean number of MII oocytes retrieved in age- and body-weight-dependent manner; in contrast, both the parameters were similar in Method B [recombinant gonadotrophin (60 IU, twice daily, 6 days), recombinant gonadotropin and recombinant human luteinizing hormone (rhLH) (60 IU, twice daily, 3 days), and hCG]...
January 9, 2017: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/28069238/low-intensity-ultrasound-as-a-pretreatment-to-drying-of-daylilies-impact-on-enzyme-inactivation-color-changes-and-nutrition-quality-parameters
#20
Zhongyuan Zhang, Liying Niu, Dajing Li, Chunquan Liu, Rui Ma, Jiangfeng Song, Jiangtao Zhao
Effects of thermal and low intensity ultrasound combined with heat (LIUH) pretreatment prior to microwave vacuum drying on enzyme inactivation, color changes and nutrition quality properties of dried daylilies were investigated. The peroxidase (POD), ascorbic acid oxidase (AAO) and polyphenoloxidase (PPO) thermal and LIUH (0.2 and 0.4W/cm(2)) inactivation were determined and compared at 70, 80 and 90°C. Significant reduction in the POD, AAO and PPO activity was seen in daylilies after an ambient LIUH pretreatment than thermal pretreatment...
May 2017: Ultrasonics Sonochemistry
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