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Insulin, uterus

Lei Wang, Mengnan Yang, Minfei Jin, Yuelin Wu, Tao Zheng, Shengyi Gu, Xiaolin Hua
To investigate the potential beneficial effect of insulin-like growth factor-1 (IGF-1) in BMSC transplantation therapy of uterus injury and the underlying molecular mechanisms, rat BMSCs were isolated and cultured. The relative expressions of IGF-1 and IL-10 were determined by RT-PCR and immunoblotting. The secretory IL-10 and released E2 were measured using ELISA kits. The relative vWF and α-SMA expressions were determined by immunohistochemistry. The direct binding of NF-κB subunit p50 with IL-10 promoter was analysed by chromatin immunoprecipitation assay...
March 7, 2018: Journal of Cellular and Molecular Medicine
Juhyun Song, Oh Yoen Kim
Lipocalin-2 (LCN2), a secreted glycoprotein belonging to the lipocalin superfamily was reported to participate in various biological processes including cell migration, cell survival, inflammatory responses, and insulin sensitivity. LCN2 is expressed in the multiple tissues such as kidney, liver, uterus, and bone marrow. The receptors for LCN2 were additionally found in microglia, astrocytes, epithelial cells, and neurons, but the role of LCN2 in the central nervous system (CNS) has not been fully understood yet...
January 2018: Clinical Nutrition Research
Pattaranit Nernsai, Areepan Sophonsritsuk, Srithean Lertvikool, Artit Jinawath, Maria Nina Chitasombat
BACKGROUND: Melioidosis, the disease caused by Burkholderia pseudomallei is endemic in the Northeastern part of Thailand, South-East Asia, and Northern Australia. The pelvic involvement of disease is rare even in an endemic area. Therefore, we describe in this report the clinical presentation, management, and outcome of the patient with primary tubo-ovarian abscess due to melioidosis. CASE PRESENTATION: A 31-year-old Thai cassava farmer woman presented with fever and abdominal pain at left lower quadrant for one month...
February 8, 2018: BMC Infectious Diseases
Sun Haeng Lee, Hyun Jeong Lee, Sung Hyun Lee, Young-Sik Kim, Donghun Lee, Jiu Chun, Jin Yong Lee, Hocheol Kim, Gyu Tae Chang
Background: To evaluate the effects of Huang Bai (Phellodendron amurense) on growth and maturation in adolescent female rats. Methods: Female Sprague-Dawley rats (28 days old; n = 72) were divided into six daily treatment groups: control (distilled water), Huang Bai (100 and 300 mg/kg), recombinant human GH (rhGH; 20 μg/kg), estradiol (1 μg/kg), and triptorelin (100 μg). Body weight, food intake, and vaginal opening were measured daily from postnatal day (PND) 28 to PND 43...
2018: Chinese Medicine
Vijay K Sirohi, Kanchan Gupta, Rohit Kumar, Vinay Shukla, Anila Dwivedi
Ormeloxifene, the non-steroidal SERM contraceptive, inhibits endometrial receptivity and embryo implantation via countering nidatory estrogen. However, the molecular mechanism of ormeloxifene action responsible for its contraceptive efficacy still remains unclear. Herein, we aimed to identify the miRNAs modulated under the influence of ormeloxifene and to explore their role in endometrial receptivity and embryo implantation. By doing microRNA sequencing analysis, a total of 168 miRNAs were found to be differentially expressed in uterine tissue of ormeloxifene-treated rats, on day 5 (10:00 h) of pregnancy i...
January 9, 2018: Journal of Steroid Biochemistry and Molecular Biology
F Hoffman, E Boretto, S Vitale, V Gonzalez, G Vidal, M F Pardo, M F Flores, F Garcia, G Bagnis, O C M Queiroz, M B Rabaglino
Maternal nutritional restrictions during late gestation could lead to fetal hypoglycemia. Glucose levels in the fetal sheep regulate circulating insulin-like growth factor 1 (IGF1) levels, which stimulate cell proliferation and differentiation of reproductive organs after binding to its own receptor or estrogen receptors. The objective of this study was to determine the effects of subnutrition of ewes during the last trimester of gestation on the serum glucose/IGF1 levels and development of reproductive organs in their lambs...
December 15, 2017: Theriogenology
Yali Cheng, Qiaoying Lv, Bingying Xie, Bingyi Yang, Weiwei Shan, Chengcheng Ning, Bing Li, Liying Xie, Chao Gu, Xuezhen Luo, Xiaojun Chen, Qin Zhu
Unopposed estrogen stimulation and insulin resistance are known to play important roles in endometrial cancer (EC), but the interaction between these two factors and how they contribute to endometrial lesions are not completely elucidated. To investigate the endometrial transcriptome profile and the associated molecular pathway alterations, we established an ovariectomized C57BL/6 mouse model treated with subcutaneous implantation of 17-β estradiol (E2) pellet and/or high-fat diet (HFD) for 12 weeks to mimic sustained estrogen stimulation and insulin resistance...
November 13, 2017: Endocrine Connections
J X Yang, M T Chaudhry, J Y Yao, S N Wang, B Zhou, M Wang, C Y Han, Y You, Y Li
Quercetin, a polyphenolic flavonoid with diverse biological activities including anti-inflammatory and antiviral, inhibits lipid peroxidation, prevents oxidative injury and cell death. The purpose of the research was to investigate the effect of quercetin on productive performance, reproductive organs, hormones and apoptotic genes in laying hens between 37 and 45 weeks of age, because of the structure and oestrogenic activities similar to 17β-oestradiol. The trial was conducted using 240 Hessian laying hens (37 weeks old), housed in wire cages with two hens in each cage...
October 6, 2017: Journal of Animal Physiology and Animal Nutrition
A A Ramoun, A M Emara, B A Heleil, S A Darweish, H A Abou-Ghait
Fifty one cyclic Egyptian buffaloes were used to study the hormonal profile and follicular dynamics concurrent with CIDR and insulin modified Ovsync TAI programs and their impacts on the consequent fertility responses. The buffaloes were randomly assigned into 3 ovulation synchronization protocols: Ovsync-alone (n = 13, control) CIDR-sync (n = 20) and Insulin-sync (n = 18). Ovsync-alone protocol consisted of two im injections of 20 μg bueserlin (GnRHa) on Day 0 (GnRH 1) and on Day 9 (GnRH 2) with an im injection of 500 μg of cloprostenol sodium (PGF2 α) on Day 7...
August 19, 2017: Theriogenology
I Martin Sheldon, James G Cronin, Mateusz Pospiech, Matthew L Turner
Bacterial infections of the uterus after parturition are ubiquitous in dairy cattle and often cause uterine disease, such as metritis or endometritis. However, the metabolic stress associated with milk production increases the risk of developing disease. Resolution of bacterial infections requires rapid and robust innate immune responses, which depend on host cell receptors recognizing pathogen-associated molecular patterns, such as lipopolysaccharide (LPS) from gram-negative bacteria. Here, we argue that metabolic stress impairs the inflammatory response to pathogens...
September 6, 2017: Journal of Dairy Science
Ryosuke Kobayashi, Jumpei Terakawa, Tsutomu Omatsu, Yupadee Hengjan, Tetsuya Mizutani, Yasushige Ohmori, Eiichi Hondo
BACKGROUND: The opening and closing of the implantation window is important for successful pregnancy in eutherians. The recent study demonstrated that the window of uterine receptivity was prepared by the sole action of progesterone in mice, but the mechanism to close the window remained to be elucidated. METHODS: The pregnant mice were ovariectomized on the evening on the third day of pregnancy with a single injection of medroxyprogesterone acetate to induce delayed implantation (DI)...
April 2017: Journal of Reproduction & Infertility
Chen-Guang Shang, Zhao-Hui Liu, Xiao-Hui Wang, Zong-Hao Feng, Yan Zhang
BACKGROUND: Epidemiologic and genetic studies suggest a link between insulin resistance (IR) and endometrial cancer, and endometrial hyperplasia (EH) is a precancerous stage of endometrial cancer. Adiponectin is an adipokine which previously shown to be a risk factor for endometrial cancer. The aim of the study was to develop a rat model of IR and EH and evaluate adiponectin system in circulation and uterus. METHODS: This study was a 46-week animal trial from February 2014 to January 2015...
August 5, 2017: Chinese Medical Journal
S Divyashree, H N Yajurvedi
The durational effects of chronic stress on the Fallopian tubes and uterus were studied by exposing rats to stressors in the form of restraint (1h) and forced swimming (15min) daily for 4, 8 or 12 weeks. One group of stressed rats from each time period was then maintained without exposure to stressors for a further 4 weeks to assess their ability to recover from stress. All time periods of stress exposure resulted in decreased weight of the body and Fallopian tubes; however, the relative weight of the uterus and serum concentrations of oestradiol and insulin increased significantly...
July 26, 2017: Reproduction, Fertility, and Development
Guiyan Han, Zhimin Zhang, Xingbin Shen, Kunpeng Wang, Yang Zhao, Jianqiu He, Yu Gao, Xiujie Shan, Guohua Xin, Chunhui Li, Xiaoyan Liu
RATIONALE: We reviewed 76 published cases of Doege-Potter syndrome, and non-islet cell tumor hypoglycemia (NICTH) secondary to a solitary fibrous tumor (SFT) between 1989 and 2016, to study disease pathogenesis, diagnosis, and treatment of this rare paraneoplastic disease. Further, we report 1 new case of a patient presenting with Doege-Potter syndrome. PATIENTS CONCERNS: The tumors originated from the pleural cavity, lung, pelvis, liver, retroperitoneum, kidney, mediastinal, the sella, uterus, bladder, intestine, mandibular, and the thigh...
July 2017: Medicine (Baltimore)
Thomas Naicy, Thirupathy Venkatachalapathy, Thazhathuveettil Aravindakshan, Kunniyoor Cheemani Raghavan, Mangattumuruppel Mini, Kulangara Shyama
Insulin-like growth factor 1 (IGF1) plays an important role in growth, reproduction, foetal development and cell proliferation. The present study was conducted to clone and sequence the full-length coding sequence of the caprine IGF1 gene from Attappady Black and Malabari breeds, two indigenous goat breeds of south India, to analyse its structure, and to ascertain the relative abundance of IGF1 mRNA in different tissues. The caprine IGF1 cDNA (GenBank accession nos: KJ549851 and KJ549852) contained a 465-bp open reading frame encoding IGF1 protein with 154 amino acid residues...
June 2017: Journal of Genetics
Sylvia C Hewitt, Wipawee Winuthayanon, Sydney L Lierz, Katherine J Hamilton, Lauren J Donoghue, J Tyler Ramsey, Sara A Grimm, Yukitomo Arao, Kenneth S Korach
Estrogen (E2) signaling through its nuclear receptor, E2 receptor α (ERα) increases insulinlike growth factor 1 (IGF1) in the rodent uterus, which then initiates further signals via the IGF1 receptor. Directly administering IGF1 results in similar biological and transcriptional uterine responses. Our studies using global ERα-null mice demonstrated a loss of uterine biological responses of the uterus to E2 or IGF1 treatment, while maintaining transcriptional responses to IGF1. To address this discrepancy in the need for uterine ERα in mediating the IGF1 transcriptional vs growth responses, we assessed the IGF1 transcriptional responses in PgrCre+Esr1f/f (called ERαUtcKO) mice, which selectively lack ERα in progesterone receptor (PGR) expressing cells, including all uterine cells, while maintaining ERα expression in other tissues and cells that do not express Pgr...
August 1, 2017: Endocrinology
Tara Krishnan, Anna L David
Fetal growth restriction (FGR) is a serious pregnancy complication affecting ∼8% of all pregnancies. There is no treatment to increase fetal growth in the uterus. Gene therapy presents a promising treatment strategy for FGR, with the use of adenoviral vectors encoding for proteins such as vascular endothelial growth factor (VEGF) and insulin-like growth factor demonstrating improvements in fetal growth, placental function, and neonatal outcome in preclinical studies. Safety assessments suggest no adverse risk to the mother or fetus for VEGF maternal gene therapy; a clinical trial is in development...
December 2017: Seminars in Fetal & Neonatal Medicine
S Kharb, J Bala, S Nanda
The objective of the study was to analyse leptin, IGF-1, Apo A, lipoproteins, haem oxygenase-1 (HO-1) in maternal sera and venous umbilical cord sera of newborn babies of 25 preeclamptics (group II), and 25 normotensive pregnant women (group I) as markers of obesity and growth in preeclamptic and normotensive pregnant women. Apo A I and II levels were estimated by competitive immunoassay using direct chemiluminiscence technology. Haem oxygenase-1 (HO-1), leptin and IGF-1 were analysed by ELISA. Maternal and cord blood levels of homocysteine, folic acid, lipid profile (namely, total cholesterol, triglycerides, LDL-C, VLDL-C and HDL-C), Haem oxygenase 1 were higher in preeclamptic women as compared to normotensive pregnant women...
May 3, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
Manuel H Aguiar-Oliveira, Anita H O Souza, Carla R P Oliveira, Viviane C Campos, Luíz A Oliveira-Neto, Roberto Salvatori
Twenty years ago, we described kindred of 105 individuals with isolated GH deficiency (IGHD) in Itabaianinha County, in northeast Brazil, carrying a homozygous mutation in the GH-releasing hormone receptor gene. These subjects exhibit markedly reduced GH responsiveness to stimulatory tests, and anterior pituitary hypoplasia. Serum concentrations of IGF-I, IGF binding protein type 3 and the acid-labile subunit are markedly reduced, with a lesser reduction of IGF-II. The most striking physical findings of these IGHD individuals are the proportionate short stature, doll facies, high-pitched voice and visceral obesity with reduced fat-free mass...
August 2017: European Journal of Endocrinology
Yuehui Zhang, Min Hu, Fanci Meng, Xiaoyan Sun, Hongfei Xu, Jiao Zhang, Peng Cui, Njomeza Morina, Xin Li, Wei Li, Xiao-Ke Wu, Mats Brännström, Ruijin Shao, Håkan Billig
Adult rats treated concomitantly with insulin and human chorionic gonadotropin exhibit endocrine, metabolic, and reproductive abnormalities that are very similar to those observed in polycystic ovary syndrome (PCOS) patients. In this study, we used this rat model to assess the effects of metformin on PCOS-related uterine dysfunction. In addition to reducing androgen levels, improving insulin sensitivity, and correcting the reproductive cycle, metformin treatment induced morphological changes in the PCOS-like uterus...
April 2017: EBioMedicine
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