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https://www.readbyqxmd.com/read/28732253/diminished-ovarian-reserve-in-women-with-transfusion-dependent-beta-thalassemia-major-is-iron-gonadotoxic
#1
Aysel Uysal, Gül Alkan, Ayşegül Kurtoğlu, Onur Erol, Erdal Kurtoğlu
OBJECTIVE: Iron accumulation in the endocrine glands has been implicated in the aetiopathogenesis of decreased reproductive capacity in patients with beta-thalassemia major (β-TM). The aim of the current study was to investigate the serum concentration of anti-Müllerian hormone (AMH), a marker of ovarian reserve, in women with transfusion-dependent β-TM. STUDY DESIGN: In this case-control study, we recruited 43 women with transfusion-dependent TM and 44 age-matched healthy controls...
July 5, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28731686/pyrethroid-insecticide-cypermethrin-accelerates-pubertal-onset-in-male-mice-via-disrupting-hypothalamic-pituitary-gonadal-axis
#2
Xiaoqing Ye, Feixue Li, Jianyun Zhang, Huihui Ma, Dapeng Ji, Xin Huang, Thomas E Curry, Weiping Liu, Jing Liu
Pyrethroids, a class of insecticides that are widely used worldwide, have been identified as endocrine-disrupting chemicals (EDCs). Our recent epidemiological study reported on an association of increased pyrethroids exposure with elevated gonadotropins levels and earlier pubertal development in Chinese boys. In this study, we further investigated the effects of cypermethrin (CP), one of the most ubiquitous pyrethroid insecticides, on hypothalamic-pituitary-gonadal (HPG) axis and pubertal onset in male animal models...
July 21, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28731074/left-hippocampus-sparing-whole-brain-radiotherapy-wbrt-a-planning-study
#3
Tomas Kazda, Miroslav Vrzal, Tomas Prochazka, Petr Dvoracek, Petr Burkon, Petr Pospisil, Adam Dziacky, Tomas Nikl, Radim Jancalek, Pavel Slampa, Radek Lakomy
AIMS: Unilateral sparing of the dominant (left) hippocampus during whole brain radiotherapy (WBRT) could mitigate cognitive decline, especially verbal memory, similar to the widely investigated bilateral hippocampus avoidance (HA-WBRT). The aim of this planning study is dosimetrical comparison of HA-WBRT with only left hippocampus sparing (LHA-WBRT) plans. METHODS: HA-WBRT plans for 10 patients were prepared in accordance with RTOG 0933 trial and served as baseline for comparisons with several LHA-WBRT plans prepared with an effort: 1) to maintain the same left hippocampus dosimetry ("BEST PTV") and 2) to maintain same dosimetry in planning target volume as in HA-WBRT ("BEST LH")...
July 20, 2017: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/28729827/lateral-hypothalamic-control-of-the-ventral-tegmental-area-reward-evaluation-and-the-driving-of-motivated-behavior
#4
REVIEW
Susan M Tyree, Luis de Lecea
The lateral hypothalamus (LH) plays an important role in many motivated behaviors, sleep-wake states, food intake, drug-seeking, energy balance, etc. It is also home to a heterogeneous population of neurons that express and co-express multiple neuropeptides including hypocretin (Hcrt), melanin-concentrating hormone (MCH), cocaine- and amphetamine-regulated transcript (CART) and neurotensin (NT). These neurons project widely throughout the brain to areas such as the locus coeruleus, the bed nucleus of the stria terminalis, the amygdala and the ventral tegmental area (VTA)...
2017: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/28726227/modelling-the-effects-of-water-diversion-and-combined-sewer-overflow-on-urban-inland-river-quality
#5
Xianyong Gu, Zhenliang Liao, Guangqian Zhang, Jiaqiang Xie, Jin Zhang
In order to assist and optimize the operation of a clean water diversion project for the medium-sized inland rivers in Chaohu, China, an integrated hydrodynamic and water quality model was used in this study. Sixteen diversion scenarios and five sewage interception scenarios were defined to assess the improvement of water quality parameters including ammonia nitrogen (NH3-N), total phosphorus (TP) and chemical oxygen demand (COD) under different diverted water flows, diverting times, diverting points, diverting routines and sewage interception proportions...
July 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28726032/comparison-of-abdominal-vaginal-and-laparoscopic-hysterectomies-in-a-tertiary-care-hospital-in-turkey
#6
Z O Inal, H A Inal
AIM: The aim of this retrospective study was to assess and compare the clinical results of three hysterectomy techniques: abdominal hysterectomy (AH), vaginal hysterectomy (VH), and laparoscopic hysterectomy (LH). METHODS: A total of 2163 patients having undergone AH (n = 1226), VH (n = 426), and LH (n = 511) procedures were analyzed. The mean age, body mass index (BMI), parity, uterus weight, operation time, blood loss, duration of hospitalization, analgesic needs, intra- and postoperative complications, and indications for hysterectomy were analyzed and compared...
July 19, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28723963/impact-of-thyroid-function-abnormalities-on-reproductive-hormones-during-menstrual-cycle-in-premenopausal-hiv-infected-females-at-nauth-nnewi-nigeria
#7
Nkiruka Rose Ukibe, Solomon Nwabueze Ukibe, Obiageli Fidelia Emelumadu, Chinedum Charles Onyenekwe, Joseph Eberendu Ahaneku, Anthony Osita Igwegbe, Ifeoma Nwamaka Monago, Amobi Linus Ilika
BACKGROUND: This was a prospective study designed to evaluate the impact of thyroid function abnormalities on reproductive hormones during menstrual cycle in HIV infected females at Nnamdi Azikiwe University Teaching Hospital Nnewi, South-East Nigeria. METHODS: The study randomly recruited 35 Symptomatic HIV infected females and 35 Symptomatic HIV infected females on antiretroviral therapy (HAART) for not less than six weeks from an HIV clinic and 40 apparently heathy control females among the hospital staff of NAUTH Nnewi...
2017: PloS One
https://www.readbyqxmd.com/read/28723610/pediatric-reference-intervals-for-29-ortho-vitros-5600-immunoassays-using-the-caliper-cohort-of-healthy-children-and-adolescents
#8
Victoria Higgins, Angela W S Fung, Man Khun Chan, Joseph Macri, Khosrow Adeli
BACKGROUND: Accurate reference intervals (RIs) based on a healthy pediatric population are essential for pediatric test result interpretation. The CALIPER project has recruited a large healthy cohort and completed a series of a priori studies to address gaps in pediatric RIs. As immunoassays from different manufacturers for endocrine and special chemistry markers are not standardized and show marked intermethod differences, direct RI studies are needed for each major analytical platform...
July 19, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28721614/low-doses-of-chlorpyrifos-interfere-with-spermatogenesis-of-rats-through-reduction-of-sex-hormones
#9
Dinithi Champika Peiris, Thamali Dhanushka
Use of pesticides results in indirect effects on human health. We aimed to evaluate implications of toxicological effects of subchronic chlorpyrifos exposure on reproductive function in male rats. A total of 48 adult Wistar male rats were separated into four groups (n = 12). Animals were gavaged with 2.5 mg/kg (T1), 5 mg/kg (T2), or 10 mg/kg (T3) body weight of chlorpyrifos (CPF) or distilled water (control) daily for 30 days. Organ weights, epididymal sperm parameters, DNA integrity, sex hormonal (FHS and LH) levels, and alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma-glutamyl transferase (GGT), and creatinine concentrations were determined on day 31...
July 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28721217/an-fsh-and-tsh-pituitary-adenoma-presenting-with-precocious-puberty-and-central-hyperthyroidism
#10
Guadalupe Vargas, Lourdes-Josefina Balcazar-Hernandez, Virgilio Melgar, Roser-Montserrat Magriña-Mercado, Baldomero Gonzalez, Javier Baquera, Moisés Mercado
A 19-year-old woman with a history of isosexual precocious puberty and bilateral oophorectomy at age 10 years because of giant ovarian cysts, presents with headaches and mild symptoms and signs of hyperthyroidism. Hormonal evaluation revealed elevated FSH and LH levels in the postmenopausal range and free hyperthyroxinemia with an inappropriately normal TSH. Pituitary MRI showed a 2-cm macroadenoma with suprasellar extension. She underwent successful surgical resection of the pituitary tumor, which proved to be composed of two distinct populations of cells, each of them strongly immunoreactive for FSH and TSH, respectively...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28719226/learned-helplessness-and-sexual-risk-taking-in-adolescent-and-young-adult-african-american-females
#11
Laura Pittiglio
Research involving adolescent and young African American (AA) females has demonstrated that they face uncontrollable obstacles which can interfere with the negotiation of safer sexual behaviors. If these obstacles are perceived as uncontrollable, then these females may be at risk for the development of Learned Helplessness (LH). As the LH model predicts, if these obstacles are believed not to be in their control, it may lead to deficits in motivational or cognitive decision-making, deficits that could certainly influence their sexual risk taking behaviors...
July 18, 2017: AIDS Patient Care and STDs
https://www.readbyqxmd.com/read/28715672/genomic-and-pathogenic-analysis-of-a-muscovy-duck-parvovirus-strain-causing-short-beak-and-dwarfism-syndrome-without-tongue-protrusion
#12
Qiuling Fu, Yu Huang, Chunhe Wan, Guanghua Fu, Baomin Qi, Longfei Cheng, Shaohua Shi, Hongmei Chen, Rongchang Liu, Zhenhai Chen
In 2008, clinical cases of short beak and dwarfism syndrome (SBDS) caused by Muscovy duck parvovirus (MDPV) infection were found in mule duck and Taiwan white duck farms in Fujian, China. A MDPV LH strain causing duck SBDS without tongue protrusion was isolated in this study. Phylogenetic analysis show that the MDPV LH strain was clustered together with other MDPV strains, but divergent from GPV isolates. Two major fragment deletions were found in the inverted terminal repeats (ITR) of MDPV LH similar to the ones in the ITR of MDPV GX5, YY and SAAS-SHNH strains...
July 12, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28715660/elevated-basal-progesterone-levels-are-associated-with-increased-preovulatory-progesterone-rise-but-not-with-higher-pregnancy-rates-in-icsi-cycles-with-gnrh-antagonists
#13
Mehmet Firat Mutlu, Mehmet Erdem, Ilknur Mutlu, Berk Bulut, Ahmet Erdem
OBJECTIVE: To ascertain the association between basal progesterone (P) levels and the occurrence of preovulatory progesterone rise (PPR) and clinical pregnancy rates (CPRs) in ICSI cycles with GnRH antagonists. STUDY DESIGN: Serum P levels of 464 patients were measured on day 2 and day of hCG of cycles. Cycles with basal P levels>1.6ng/mL were cancelled. All embryos were cryopreserved in cycles with P levels≥2ng/mL on the day of hCG. The primary outcome measures were the incidence of PPR (P>1...
June 29, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28713816/effect-of-the-camelid-s-seminal-plasma-ovulation-inducing-factor-%C3%AE-ngf-a-kisspeptin-target-hypothesis
#14
REVIEW
Khalid El Allali, Najlae El Bousmaki, Hassan Ainani, Valérie Simonneaux
Female mammals are classified into spontaneous and induced ovulators based on the mechanism eliciting ovulation. Ovulation in spontaneous species (e.g., human, sheep, cattle, horse, pigs, and most rodents) occurs at regular intervals and depends upon the circulating estradiol. However, in induced ovulators (e.g., rabbits, ferrets, cats, and camelids), ovulation is associated with coitus. In the later, various factors have been proposed to trigger ovulation, including auditory, visual, olfactory, and mechanic stimuli...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28712426/negative-affect-is-unrelated-to-fluctuations-in-hormone-levels-across-the-menstrual-cycle-evidence-from-a-multisite-observational-study-across-two-successive-cycles
#15
Michael P Hengartner, Tillmann H C Kruger, Kirsten Geraedts, Enrico Tronci, Toni Mancini, Fabian Ille, Marcel Egli, Susanna Röblitz, Rainald Ehrig, Lanja Saleh, Katharina Spanaus, Cordula Schippert, Yuanyuan Zhang, Brigitte Leeners
BACKGROUND: Female sex hormones may play a crucial role in the occurrence of cycle-related mood disorders. However, the literature is inconsistent and methodologically stringent observational studies on the relationship between sex hormones and negative affect are lacking. METHODS: In this longitudinal multisite study from Hannover, Germany, and Zurich, Switzerland, we examined oestrogen, progesterone, luteinizing hormone (LH), follicle-stimulating hormone (FSH), and testosterone serum levels in association with negative affect as measured with the Positive and Negative Affect Schedule (PANAS)...
August 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28711962/the-relation-between-hemoglobin-variability-and-carotid-intima-media-thickness-in-chronic-hemodialysis-patients
#16
Safa Ersen Ganidagli, Orcun Altunoren, Ertuğrul Erken, Ismet Onder Isık, Berivan Ganidagli, Necmi Eren, Yasemin Coskun Yavuz, Ozkan Gungor
PURPOSE: Hemoglobin variability is a common problem among hemodialysis patients. We have previously demonstrated an association between Hb variability and left ventricular mass index. In this study, we investigated a possible relation between Hb variability and carotid intima-media thickness (CIMT). METHODS: Twelve-month hemoglobin (Hb) values of 135 patients on maintenance hemodialysis were examined retrospectively. The range of 11-12 gr/dl was accepted as normal according to the KDOQI guidelines...
July 15, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28711266/intravaginal-instillation-of-gonadotropin-releasing-hormone-analogues-with-an-absorption-enhancer-induced-a-surge-of-luteinizing-hormone-in-lactating-dairy-cows
#17
R Wijma, M L Stangaferro, M Masello, M A Elmetwally, G E Granados, F Amovilli, J O Giordano
Our objectives were to evaluate circulating LH concentrations after intravaginal (IVG) instillation of GnRH analogs in lactating dairy cows. In 2 experiments, lactating Holstein cows (experiment 1: n = 32; experiment 2: n = 47) received the experimental treatments 48 h after the first of 2 PGF2α treatments given 12 h apart and 7 d after a modified Ovsynch protocol (GnRH at -7 d, PGF2α at -24 h, PGF2α at -56 h, GnRH at 0 h). In experiment 1, cows were stratified by parity and randomly allocated to receive the following treatments: 2 mL of saline IVG (SAL, n = 6), 100 µg of gonadorelin (Gon) i...
July 12, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28711020/synthesis-structures-nuclease-activity-cytotoxicity-dft-and-molecular-docking-studies-of-two-nitrato-bridged-homodinuclear-cu-cu-zn-zn-complexes-containing-2-2-bipyridine-and-a-chalcone-derivative
#18
Ruchi Gaur, Diksha Kumari Choubey, Mohammad Usman, Benzamin D Ward, Jagat Kumar Roy, Lallan Mishra
Nitrato briged dinuclear complexes of type [Cu2(L)2(bpy)2(NO3)](NO3)·4H2O, 1 and [Zn2(L)2(bpy)2(NO3)](NO3)·4H2O, 2 (L=deprotonated form of free ligand LH, [1-(2-hydroxyphenyl)-3-(9-anthracenyl) propenone; bpy=2,2'bipyridine] are synthesized and characterized using a battery of physicochemical techniques and X-ray crystallography. A distorted square pyramidal geometry is assigned to them with N2O3 coordination core around the metal ion. The co-ligand L binds the metal ions through its O,O' atoms in anti-syn mode...
July 8, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28710023/transient-brain-hypothermia-reduces-the-reperfusion-injury-of-delayed-tissue-plasminogen-activator-and-extends-its-therapeutic-time-window-in-a-focal-embolic-stroke-model
#19
Mohammadreza Zarisfi, Fatemeh Allahtavakoli, Mahsa Hassanipour, Mohammad Khaksari, Hossain Rezazadeh, Mohammad Allahtavakoli, Mohammad Mohsen Taghavi
It has been reported that restriction of reperfusion after thrombolytic therapy in ischemic stroke may reduce tissue plasminogen activator (tPA) adverse effects and extend its time window. We examined whether shortIt has been reported that restriction of reperfusion after thrombolytic therapy in ischemic stroke may reduce tissue plasminogen activator (tPA) adverse effects and extend its time window. We examined whether short-term and mild local brain cooling can prevent hyperemia and/or adverse effects of delayed tPA in rat embolic stroke model...
July 11, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28708540/influence-of-two-ovulation-inducing-agents-on-the-pituitary-response-and-follicle-blood-flow-in-mares
#20
Y L Boakari, J C Ferreira, H S Canesin, D L Thompson, F S Lima, J C F Pantoja, C Meira
The objective of the current study was to evaluate the effects of deslorelin and hCG, two ovulation-inducing therapies, on LH surge and follicle vascularity in mares. Thirty mares were either treated with 1.5 mg IM of deslorelin, 2,500 IU IV of hCG or 2 mL IM of NaCl 0.9% (GnRH, hCG and Saline groups, respectively). Power-flow Doppler examination and blood collection were performed every hour during the first 12 hours after treatment (H0) and every six hours between hours 12 (H12) and 30 (H30) after treatment...
June 8, 2017: Theriogenology
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