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https://www.readbyqxmd.com/read/28212313/chemoprevention-of-rat-mammary-carcinogenesis-by-apiaceae-spices
#1
Farrukh Aqil, Jeyaprakash Jeyabalan, Radha Munagala, Srivani Ravoori, Manicka V Vadhanam, David J Schultz, Ramesh C Gupta
Scientific evidence suggests that many herbs and spices have medicinal properties that alleviate symptoms or prevent disease. In this study, we examined the chemopreventive effects of the Apiaceae spices, anise, caraway, and celery seeds against 17β-estrogen (E2)-mediated mammary tumorigenesis in an ACI (August-Copenhagen Irish) rat model. Female ACI rats were given either control diet (AIN 93M) or diet supplemented with 7.5% (w/w) of anise, caraway, or celery seed powder. Two weeks later, one half of the animals in each group received subcutaneous silastic implants of E2...
February 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28211122/prolactin-regulation-of-oxytocin-neurone-activity-in-pregnancy-and-lactation
#2
Rachael A Augustine, Sharon R Ladyman, Gregory T Bouwer, Yousif Alyousif, Tony J Sapsford, Victoria Scott, Ilona C Kokay, David R Grattan, Colin H Brown
Secretion of prolactin for milk synthesis and oxytocin for milk secretion is required for successful lactation. In virgin rats, prolactin inhibits oxytocin neurones but this effect would be counterproductive during lactation when secretion of both hormones is required for synthesis and delivery of milk to the new-born. Hence, we determined the effects of intracerebroventricular (ICV) prolactin on oxytocin neurones in urethane-anaesthetised virgin, pregnant and lactating rats. Prolactin (2 μg) consistently inhibited oxytocin neurones in virgin and pregnant rats (by 1...
February 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28203372/diagnostic-challenges-and-management-of-a-patient-with-acromegaly-due-to-ectopic-growth-hormone-releasing-hormone-secretion-from-a-bronchial-carcinoid-tumour
#3
Nikolaos Kyriakakis, Jacqueline Trouillas, Mary N Dang, Julie Lynch, Paul Belchetz, Márta Korbonits, Robert D Murray
: A male patient presented at the age of 30 with classic clinical features of acromegaly and was found to have elevated growth hormone levels, not suppressing during an oral glucose tolerance test. His acromegaly was originally considered to be of pituitary origin, based on a CT scan, which was interpreted as showing a pituitary macroadenoma. Despite two trans-sphenoidal surgeries, cranial radiotherapy and periods of treatment with bromocriptine and octreotide, his acromegaly remained active clinically and biochemically...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28202853/structures-showing-negative-correlations-of-signal-intensity-with-postnatal-age-on-t1-weighted-imaging-of-the-brain-of-newborns-and-infants
#4
Saeka Hori, Toshiaki Taoka, Tomoko Ochi, Toshiteru Miyasaka, Masahiko Sakamoto, Katsutoshi Takayama, Takeshi Wada, Kaoru Myochin, Yukihiro Takahashi, Kimihiko Kichikawa
PURPOSE: Although the neonatal and infantile brain typically shows sequential T1 shortening according to gestational age as a result of myelination, several structures do not follow this rule. We evaluated the relationship between the signal intensity of various structures in the neonatal and infantile brain on T1-weighted imaging (T1WI) and either postnatal or gestational age. MATERIALS AND METHODS: We examined magnetic resonance images from 120 newborns and infants without any abnormalities in the central nervous system...
February 16, 2017: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/28199185/age-and-sex-related-differences-in-normal-pituitary-gland-and-fossa-volumes
#5
Hrvoje Ivan Pecina, Tatjana Cicvara Pecina, Vlasta Vyroubal, Ivan Kruljac, Mario Slaus
This study investigates the influence of age and sex on the volumes of the pituitary fossa and gland in 91 males and 108 females from Croatia who underwent magnetic resonance imaging of the endocranium for complaints not related to the pituitary gland. Isometric 3DT1 MPRAGE and 3DT1 MPR sequences were obtained on 1.5. Tesla and analysed on ISSA software. The volumes were obtained from the sum of all the areas multiplied by the thickness of the section. The mean volume of the pituitary fossa for males was 1111...
March 1, 2017: Frontiers in Bioscience (Elite Edition)
https://www.readbyqxmd.com/read/28196954/metformin-and-thyroid-disease
#6
Xianghui Meng, Shuhang Xu, Guofang Chen, Michael Derwahl, Chao Liu
An intriguing area of research in thyroidology is the recently discovered association of insulin resistance with thyroid functional and morphological abnormalities. Individuals with hyperinsulinemia have larger thyroid gland and a higher prevalence of thyroid nodules and cancer. Accordingly, patients treated with metformin have a smaller thyroid volume and a lower risk of incident goiter, thyroid nodule and cancer. Multiple studies in vitro and in vivo have demonstrated that metformin can inhibit the growth of thyroid cells and different types of thyroid cancer cells by affecting the insulin/IGF-1 and mTOR pathways...
February 14, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28187108/complicated-case-presentation-management-of-pancreatic-neuroendocrine-tumors-in-multiple-endocrine-neoplasia-type-1
#7
Claire K Mulvey, Katherine Van Loon, Emily K Bergsland, Umesh Masharani, Eric K Nakakura
Multiple endocrine neoplasia type 1 (MEN1) is an inherited predisposition to tumors of the parathyroid glands, anterior pituitary, and pancreatic islet cells. In this review, we discuss the clinical case of a 45-year-old woman with MEN1 that was presented at the 2015 North American Neuroendocrine Tumor Society Symposium. In our review of this patient's complicated clinical course and subsequent operative management, we highlight controversies in the diagnosis and management of pancreatic neuroendocrine tumors in MEN1...
March 2017: Pancreas
https://www.readbyqxmd.com/read/28181328/protein-and-mrna-expression-of-follicle-stimulating-hormone-receptor-and-luteinizing-hormone-receptor-during-the-oestrus-in-the-yak-bos-grunniens
#8
S-D Huo, S-E Chen, R-J Long, J-T Yang, J-X Lu, R-X Zang, T-J Zhang, A Abudureyimu, J-L Liu, G-H Zhang, Y-Q Zhao, Z-R Ma
Follicle-stimulating hormone (FSH) and luteinizing hormone (LH) have a central role in follicle growth, maturation and oestrus, but no clear pathway in the seasonal oestrus of yak (Bos grunniens) has been found. To better understand the role of FSH and LH in seasonal oestrus in the yak, six yaks were slaughtered while in oestrus, and the pineal gland, hypothalamus, pituitary gland, and gonads were collected. Using real-time PCR and immunohistochemical assays, we determined the mRNA and protein expression of the FSH and LH receptors (FSHR and LHR) in these organs...
February 8, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28181232/does-iih-alter-brain-microstructures-a-dti-based-approach
#9
Christoph Schmidt, Edzard Wiener, Lutz Lüdemann, Hagen Kunte, Katharina Maria Kreutz, Nils Becker, Lutz Harms, Randolf Klingebiel, Jan Hoffmann
INTRODUCTION: To investigate the correlation of microstructural parameters with CSF pressure and macroscopic changes assessed by diffusion tensor imaging (DTI) in patients with idiopathic intracranial hypertension (IIH). METHODS: Twenty-three patients with IIH as well as age-, sex-, and body mass index (BMI)-matched controls underwent high resolution MR imaging of the optic nerve sheaths (ONS), pituitary gland, and ventricles. For DTI data a voxelwise permutation analysis was performed for the whole brain and ROI analysis was performed for the optic nerve and optic radiation...
February 9, 2017: Headache
https://www.readbyqxmd.com/read/28178702/dysregulation-of-the-expression-of-asparagine-linked-glycosylation-13-short-isoform-2-affects-nephrin-function-by-altering-its-n-linked-glycosylation
#10
Teresa Esposito, Giovanni De Stefano, Mafalda Giovanna Reccia, Ilaria Di Lorenzo, Filomena Napolitano, Francesco Scalabrì, Alessia Lombardi, Moin A Saleem, Lyn R Griffiths, Fernando Gianfrancesco
BACKGROUND: N-linked glycosylation, which is a post-translational modification process, plays an important role in protein folding, intracellular trafficking and membrane targeting, as well as in regulating the protein function. Recently, we identified a missense variant (p.T141L) in the short isoform 2 of the X-linked gene asparagine-linked glycosylation 13 (ALG13-is2), which segregated with focal segmental glomerulosclerosis and PCCD in a large Australian pedigree; however, any evidence of its pathogenicity was demonstrated...
February 9, 2017: Nephron
https://www.readbyqxmd.com/read/28160775/craniopharyngioma-presenting-with-severe-hyponatremia-hyponatremia-induced-myopathy-and-panhypopituitarism-a-case-report
#11
M D S A Dilrukshi, G V N Sandakumari, P K Abeysundara, T Chang
BACKGROUND: Craniopharyngiomas are rare intracranial tumors commonly presenting with neurological symptoms. Reports of severe hyponatremia as a presenting manifestation of a craniopharyngioma and hyponatremia-induced myopathy are rare. We report the case of a patient with craniopharyngioma presenting with severe hyponatremia, panhypopituitarism, and hyponatremia-induced myopathy. CASE PRESENTATION: A 52-year-old Sri Lankan man presented with anorexia, nausea, fatigue, generalized muscle weakness, and cramps for 1 week...
February 5, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28156135/pituitary-gland-trauma-in-fatal-nonsurgical-closed-traumatic-brain-injury
#12
Olufemi Emmanuel Idowu, John O Obafunwa, Sunday O Soyemi
BACKGROUND: Traumatic injury to pituitary gland can lead to significant endocrine dysfunctions. The aim of this study is to define the frequency of pituitary gland injury in patients with fatal nonsurgical closed traumatic brain injury (TBI), and to correlate if any, the type of craniocerebral injury associated with the pituitary gland injury. METHODS: The study is a prospective autopsy review of 30 adult patients with fatal closed TBI. Patients who had any form of neurosurgical intervention were excluded from the study...
February 3, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28152577/complementary-actions-of-dopamine-d2-receptor-agonist-and-anti-vegf-therapy-on-tumoral-vessel-normalization-in-a-transgenic-mouse-model
#13
Norbert Chauvet, Nicola Romanò, Chrystel Lafont, Anne Guillou, Evelyne Galibert, Xavier Bonnefont, Paul Le Tissier, Monica Fedele, Alfredo Fusco, Patrice Mollard, Nathalie Coutry
Angiogenesis contributes in multiple ways to disease progression in tumors and reduces treatment efficiency. Molecular therapies targeting Vegf signaling combined with chemotherapy or other drugs exhibit promising results to improve efficacy of treatment. Dopamine has been recently proposed to be a novel safe antiangiogenic drug that stabilizes abnormal blood vessels and increases therapeutic efficacy. Here, we aimed to identify a treatment to normalize tumoral vessels and restore normal blood perfusion in tumor tissue with a Vegf receptor inhibitor and/or a ligand of dopamine G protein-coupled receptor D2 (D2R)...
February 2, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28144938/immunocytochemical-identification-and-ontogeny-of-adenohypophyseal-cells-in-a-cave-fish-phreatichthys-andruzzii-cypriniformes-cyprinidae
#14
G Grandi, M Pezzi, M G Marchetti, M Chicca
The morphogenesis of the pituitary gland and the chronological appearance of adenohypophyseal cells were investigated for the first time in the Somalian cave fish Phreatichthys andruzzii by immunocytochemistry. The adult adenohypophysis contained: a rostral pars distalis, with prolactin (PRL) cells arranged in follicles and adrenocorticotropic (ACTH) cells, a proximal pars distalis with somatotropic (GH), β-thyrotropic (TSH), β-gonadotropic type I (FSH) and type II (LH) cells and a pars intermedia with α-somatolactin (SL), α-melanotropic (MSH) and β-endorphin (END) cells...
February 1, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28144772/a-combined-opiate-agonist-and-antagonist-treatment-reduces-prolactin-secreting-pituitary-tumor-growth
#15
George Maglakelidze, Olivia Wynne, Dipak K Sarkar
Prolactin secreting pituitary adenomas (prolactinomas) is the most common pituitary tumors in humans. Animal studies have identified aggressive prolactinoma development in fetal alcohol exposed rats. We have recently identified a combination treatment of a μ opioid receptor antagonist naltrexone and a δ opioid receptor agonist D-Ala2-,N-Me-Phe4,Gly-ol Enkephalin (DPDPE) increases innate immune function. In this study, we tested whether naltrexone and DPDPE combination therapy is useful to control pituitary tumor growth...
January 31, 2017: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/28134999/pathogenesis-of-hyperthyroidism
#16
Ishita Singh, Jerome M Hershman
Hyperthyroidism is a form of thyrotoxicosis in which there is excess thyroid hormone synthesis and secretion. Multiple etiologies can lead to a common clinical state of "thyrotoxicosis," which is a consequence of the high thyroid hormone levels and their action on different tissues of the body. The most common cause of thyrotoxicosis is Graves' disease, an autoimmune disorder in which stimulating thyrotropin receptor antibodies bind to thyroid stimulating hormone (TSH) receptors on thyroid cells and cause overproduction of thyroid hormones...
December 6, 2016: Comprehensive Physiology
https://www.readbyqxmd.com/read/28133560/endoscopic-resection-of-skull-base-teratoma-in-klippel-feil-syndrome-through-use-of-combined-ultrasonic-and-bipolar-diathermy-platforms
#17
Justin A Edward, Alkis J Psaltis, Ryan A Williams, Gregory W Charville, Robert L Dodd, Jayakar V Nayak
Klippel-Feil syndrome (KFS) is associated with numerous craniofacial abnormalities but rarely with skull base tumor formation. We report an unusual and dramatic case of a symptomatic, mature skull base teratoma in an adult patient with KFS, with extension through the basisphenoid to obstruct the nasopharynx. This benign lesion was associated with midline palatal and cerebral defects, most notably pituitary and vertebrobasilar arteriolar duplications. A multidisciplinary workup and a complete endoscopic, transnasal surgical approach between otolaryngology and neurosurgery were undertaken...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28133267/-multiple-endocrine-neoplasia-type-1-men1-presenting-with-hypoglycemic-attacks-a-case-report
#18
Yusuke Okubo, Takeshi Tono, Maki Fukamizu, Yasuhito Kawasaki, Koji Shinozaki, Takaaki Ishii, Tomohiro Katayama, Yumiko Yamauchi, Hideaki Fukamizu, Takashi Tominaga, Shuho Senba, Seiji Yasuda, Minoru Otsuru
A woman in her 60s visited our hospital because of frequent hypoglycemia and episodes of unconsciousness over the last 6 years. A 4 cm tumor was detected on the pancreatic tail using abdominal computed tomography and ultrasonography. An insulinoma was strongly suspected from the results of the fasting test and glucagon load test, and a distal pancreatectomy with splenectomy was performed. Pathological examination indicated an insulinoma and neuroendocrine tumor(NET)G2 based on the WHO 2010 classification. The patient's blood sugar and insulin levels returned to normal, and hypoglycemic attacks disappeared postoperatively...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28132777/reduced-muscle-mass-in-middle-aged-depressed-patients-is-associated-with-male-gender-and-chronicity
#19
Kai G Kahl, Ferdi Utanir, Ulrich Schweiger, Tillmann H Krüger, Helge Frieling, Stefan Bleich, Marcel Gutberlet, Dagmar Hartung
OBJECTIVE: Reduced muscle mass is a characteristic finding in sarcopenia, the central element of physical frailty syndrome, and a major cause of physical function decay, morbidity and mortality in the elderly. Studies so far demonstrated reduced muscle mass in depressed patients with an average age over 60years.An open question is whether muscle mass reduction is already observed earlier. Therefore, muscle mass was assessed in middle-aged male and female depressive patients, and the findings were related to indicators of hypothalamus-pituitary adrenal axis activation, lifestyle factors, endocrine and immune measures...
January 26, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28131616/how-is-gnrh-regulated-in-gnrh-producing-neurons-studies-using-gt1-7-cells-as-a-gnrh-producing-cell-model
#20
REVIEW
Haruhiko Kanasaki, Aki Oride, Tselmeg Mijiddorj, Unurjargal Sukhbaatar, Satoru Kyo
Hypothalamic secretion of gonadotropin-releasing hormone (GnRH) has been established as a principle pathway for initiating and integrating female reproductive function. GnRH stimulates the release of two gonadotropins-luteinizing hormone and follicle-stimulating hormone-from the anterior pituitary, which eventually stimulate the synthesis of sex steroids in association with follicular growth and ovulation. This reproductive control of the hypothalamic-pituitary-gonadal (HPG) axis also mediates gonadal feedback mechanisms...
January 25, 2017: General and Comparative Endocrinology
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