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https://www.readbyqxmd.com/read/28441693/sex-differences-in-fat-distribution-influence-the-association-between-bmi-and-arterial-stiffness
#1
Inge C L van den Munckhof, Suzanne Holewijn, Jacqueline de Graaf, Joost H W Rutten
CONTEXT AND OBJECTIVE: The increase in arterial stiffness in patients with the metabolic syndrome is strongly related to the amount of visceral adipose tissue. In clinical practice, anthropometric measurements such as BMI and waist circumference are commonly used to assess general and abdominal adiposity. Waist circumference is a composite measure of subcutaneous and visceral abdominal adipose tissue. As the distribution of intra-abdominal fat differs between men and women, we investigated the sex-specific associations between different anthropometric measures for general and abdominal obesity with arterial stiffness...
June 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28441629/sex-matters-the-effects-of-biological-sex-on-adipose-tissue-biology-and-energy-metabolism
#2
REVIEW
Teresa G Valencak, Anne Osterrieder, Tim J Schulz
Adipose tissue is a complex and multi-faceted organ. It responds dynamically to internal and external stimuli, depending on the developmental stage and activity of the organism. The most common functional subunits of adipose tissue, white and brown adipocytes, regulate and respond to endocrine processes, which then determine metabolic rate as well as adipose tissue functions. While the molecular aspects of white and brown adipose biology have become clearer in the recent past, much less is known about sex-specific differences in regulation and deposition of adipose tissue, and the specific role of the so-called pink adipocytes during lactation in females...
April 13, 2017: Redox Biology
https://www.readbyqxmd.com/read/28438684/two-spliced-isoforms-of-the-sex-determination-gene-fruitless-in-the-chinese-mitten-crab-eriocheir-sinensis
#3
Peiyao Li, Yuan Liu, Danli Luo, Chengwen Song, Zhaoxia Cui
The fruitless (fru) gene plays an important role in sex determination pathway and courtship behavior of Drosophila melanogaster. In the present study, two fru isoforms (Esfru1 and Esfru2) were identified from the Chinese mitten crab Eriocheir sinensis. Sequence analysis showed that Esfru1 and Esfru2 were encoded by the same genomic locus and generated by alternative splicing of pre-mRNA. Esfru1 had all introns completely spliced out, while Esfru2 had a longer exon1 with an additional 78bp sequence. They both contained a conserved BTB domain which was also found in D...
April 21, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28437549/poor-utility-of-gonadal-shielding-for-pediatric-pelvic-radiographs
#4
Mark C Lee, Jessica Lloyd, Matthew J Solomito
Plain pelvic radiographs are commonly used for a variety of pediatric orthopedic disorders. Lead shielding is typically placed over the gonads to minimize radiation exposure to these sensitive tissues. However, misplaced shielding can sabotage efforts to protect patients from excessive radiation exposure either by not covering radiosensitive tissues or by obscuring anatomic areas of interest, prompting repeat radiographic examinations. The goal of this study was to determine the incidence of misplaced shielding for pelvic radiographs obtained for pediatric orthopedic evaluation...
April 24, 2017: Orthopedics
https://www.readbyqxmd.com/read/28427900/molecular-cloning-and-characterization-of-kiss1-in-brandt-s-voles-lasiopodomys-brandtii
#5
Yan Chen, Lan Liu, Zhengguang Li, Dawei Wang, Ning Li, Ying Song, Cong Guo, Xiaohui Liu
Kisspeptin, encoded by kiss1, has been regarded as a major modulator of mammalian puberty and fertility due to its stimulation on GnRH. Brandt's vole is one of the main pest species on the Inner Mongolian steppes for its striking reproductive capacity and kiss1 is a key candidate gene related to reproductive regulatory cascades. In this study, kiss1 cDNA was cloned from the hypothalamus of Brandt's voles and kiss1 mRNA levels were investigated in different tissues, and at different developmental stages, using high-throughput real-time PCR...
April 18, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28427347/comparative-transcriptomics-of-mountain-pine-beetle-pheromone-biosynthetic-tissues-and-functional-analysis-of-cyp6de3
#6
J A Nadeau, J Petereit, R L Tillett, K Jung, M Fotoohi, M MacLean, S Young, K Schlauch, G J Blomquist, C Tittiger
BACKGROUND: The mountain pine beetle (MPB, Dendroctonus ponderosae Hopkins) is a highly destructive pest of pine forests in western North America. During flight to a new host tree and initiation of feeding, mountain pine beetles release aggregation pheromones. The biosynthetic pathways of these pheromones are sex-specific and localized in the midgut and fat body, but the enzymes involved have not all been identified or characterized. RESULTS: We used a comparative RNA-Seq analysis between fed and unfed male and female MPB midguts and fat bodies to identify candidate genes involved in pheromone biosynthesis...
April 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28424377/sex-differences-in-micro-and-macro-vascular-complications-of-diabetes-mellitus
#7
REVIEW
Christine Maric-Bilkan
Vascular complications are a leading cause of morbidity and mortality in both men and women with type 1 (T1DM) or type 2 (T2DM) diabetes mellitus, however the prevalence, progression and pathophysiology of both microvascular (nephropathy, neuropathy and retinopathy) and macrovascular [coronary heart disease (CHD), myocardial infarction, peripheral arterial disease (PAD) and stroke] disease are different in the two sexes. In general, men appear to be at a higher risk for diabetic microvascular complications, while the consequences of macrovascular complications may be greater in women...
May 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28424375/mitochondria-a-central-target-for-sex-differences-in-pathologies
#8
REVIEW
Renée Ventura-Clapier, Maryline Moulin, Jérôme Piquereau, Christophe Lemaire, Mathias Mericskay, Vladimir Veksler, Anne Garnier
It is increasingly acknowledged that a sex and gender specificity affects the occurrence, development, and consequence of a plethora of pathologies. Mitochondria are considered as the powerhouse of the cell because they produce the majority of energy-rich phosphate bonds in the form of adenosine tri-phosphate (ATP) but they also participate in many other functions like steroid hormone synthesis, reactive oxygen species (ROS) production, ionic regulation, and cell death. Adequate cellular energy supply and survival depend on mitochondrial life cycle, a process involving mitochondrial biogenesis, dynamics, and quality control via mitophagy...
May 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28424285/equine-arteritis-virus-has-specific-tropism-for-stromal-cells-and-cd8-t-and-cd21-b-lymphocytes-but-not-glandular-epithelium-at-the-primary-site-of-persistent-infection-in-the-stallion-reproductive-tract
#9
Mariano Carossino, Alan T Loynachan, Igor F Canisso, R Frank Cook, Juliana R Campos, Bora Nam, Yun Young Go, Edward L Squires, Mats H T Troedsson, Thomas Swerczek, Fabio Del Piero, Ernest Bailey, Peter J Timoney, Udeni B R Balasuriya
Equine arteritis virus (EAV) has a global impact on the equine industry being the causative agent of equine viral arteritis (EVA), a respiratory, systemic, and reproductive disease of equids. A distinctive feature of EAV infection is that it establishes long-term persistent infection in 10 to 70% of infected stallions (carriers). In these stallions, EAV is only detectable in the reproductive tract and viral persistence occurs despite the presence of high serum neutralizing antibodies. Carrier stallions constitute the natural reservoir of the virus as they continuously shed EAV in their semen...
April 19, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28417958/widespread-patterns-of-sexually-dimorphic-gene-expression-in-an-avian-hypothalamic-pituitary-gonadal-hpg-axis
#10
Matthew D MacManes, Suzanne H Austin, Andrew S Lang, April Booth, Victoria Farrar, Rebecca M Calisi
The hypothalamic-pituitary-gonadal (HPG) axis is a key biological system required for reproduction and associated sexual behaviors to occur. In the avian reproductive model of the rock dove (Columba livia), we characterized the transcript community of each tissue of the HPG axis in both sexes, thereby significantly expanding our mechanistic insight into HPG activity. We report greater sex-biased differential expression in the pituitary as compared to the hypothalamus, with multiple genes more highly expressed in the male pituitary being related to secretory function, and multiple genes more highly expressed in the female pituitary being related to reproduction, growth, and development...
April 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28417258/in-vivo-facial-soft-tissue-depths-of-a-modern-adult-population-from-germany
#11
Nicolle Thiemann, Volker Keil, Uwe Roy
Forensic facial reconstruction may be the final option available to draw public attention in cases where the identity of an individual cannot be established by standard identification methods. Two fundamental components of all forensic facial reconstruction techniques are cranial morphology and soft tissue depth databases. The purpose of this study was to extend such databases by providing a complete set of accurate facial soft tissue thickness measurements, acquired from a contemporary adult population from Germany...
April 17, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28409331/igf-1-has-sexually-dimorphic-pleiotropic-and-time-dependent-effects-on-healthspan-pathology-and-lifespan
#12
Nicole M Ashpole, Sreemathi Logan, Andriy Yabluchanskiy, Matthew C Mitschelen, Han Yan, Julie A Farley, Erik L Hodges, Zoltan Ungvari, Anna Csiszar, Sixia Chen, Constantin Georgescu, Gene B Hubbard, Yuji Ikeno, William E Sonntag
Reduced circulating levels of IGF-1 have been proposed as a conserved anti-aging mechanism that contributes to increased lifespan in diverse experimental models. However, IGF-1 has also been shown to be essential for normal development and the maintenance of tissue function late into the lifespan. These disparate findings suggest that IGF-1 may be a pleiotropic modulator of health and aging, as reductions in IGF-1 may be beneficial for one aspect of aging, but detrimental for another. We postulated that the effects of IGF-1 on tissue health and function in advanced age are dependent on the tissue, the sex of the animal, and the age at which IGF-1 is manipulated...
April 13, 2017: GeroScience
https://www.readbyqxmd.com/read/28405401/drosophila-enhancer-gal4-lines-show-ectopic-expression-during-development
#13
Sergio Casas-Tintó, Mercedes Arnés, Alberto Ferrús
In Drosophila melanogaster the most widely used technique to drive gene expression is the binary UAS/Gal4 system. We show here that a set of nervous system specific enhancers (elav, D42/Toll-6, OK6/RapGAP1) display ectopic activity in epithelial tissues during development, which is seldom considered in experimental studies. This ectopic activity is variable, unstable and influenced by the primary sequence of the enhancer and the insertion site in the chromosome. In addition, the ectopic activity is independent of the protein expressed, Gal4, as it is reproduced also with the expression of Gal80...
March 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28401307/immunohistochemical-mapping-and-transcript-expression-of-the-gpa2-gpb5-receptor-in-tissues-of-the-adult-mosquito-aedes-aegypti
#14
David A Rocco, Doo Hyun Kim, Jean-Paul V Paluzzi
GPA2/GPB5 is a glycoprotein hormone found in most bilateral metazoans including the mosquito, Aedes aegypti. To elucidate physiological roles and functions of GPA2/GPB5, we aim to identify prospective target tissues by examining the tissue- and sex-specific expression profile of its receptor, the leucine-rich repeat-containing G protein-coupled receptor 1 (LGR1) in the adult mosquito. Western analyses using a heterologous system with CHO-K1 cells, transiently expressing A. aegypti LGR1, yielded a 112-kDa monomeric band and high-molecular weight multimers, which associated with membrane-protein fractions...
April 11, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28399645/prohibitin-at-the-crossroads-of-obesity-linked-diabetes-and-cancer
#15
Suresh Mishra, Bl Grégoire Nyomba
The promoter of a gene that is selectively expressed in just a few cell types provides unique opportunities to study: (1) the pleiotropic function of a protein in two different cell types including the cell compartment specific function, and (2) the crosstalk between two cell/tissue types at the systemic level. This is not possible with a ubiquitous or a highly specific gene promoter. The adipocyte protein-2 ( aP2) is one such gene. It is primarily expressed in adipocytes, but also selectively in monocytic macrophages and dendritic cells, among various immune cell types...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28399220/associations-of-fat-and-muscle-tissue-with-cognitive-status-in-older-adults-the-ages-reykjavik-study
#16
Peggy J J Spauwen, Rachel A Murphy, Pálmi V Jónsson, Sigurdur Sigurdsson, Melissa E Garcia, Gudny Eiriksdottir, Martin P J van Boxtel, Oscar L Lopez, Vilmundur Gudnason, Tamara B Harris, Lenore J Launer
Background/Objective: studies on the association of dementia with specific body composition (BC) components are scarce. Our aim was to investigate associations of BC measures with different levels of cognitive function in late-life. Methods: we studied 5,169 participants (mean age 76 years, 42.9% men) in the AGES-Reykjavik Study of whom 485 (9.4%) were diagnosed with mild cognitive impairment (MCI) and 307 (5.9%) with dementia. Visceral fat, abdominal and thigh subcutaneous fat, and thigh muscle were assessed by computed tomography...
March 1, 2017: Age and Ageing
https://www.readbyqxmd.com/read/28398951/challenges-in-pathologic-staging-of-bladder-cancer-proposals-for-fresh-approaches-of-assessing-pathologic-stage-in-light-of-recent-studies-and-observations-pertaining-to-bladder-histoanatomic-variances
#17
REVIEW
Gladell P Paner, Rodolfo Montironi, Mahul B Amin
The paradigm of pathologic stage (pT) categorization in bladder cancer remains the depth of invasion into the different histologic layers of the bladder wall. However, the approaches to assigning pT stage category toward an enhanced outcome stratification have been marked by challenges and innovations, due in part to our growing appreciation of the surprisingly perplexing bladder histoanatomy. Upstaging of pT1 tumors after radical cystectomy is substantial and underscores the potential value of pT1 substaging in transurethral resection (TUR) specimens...
May 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/28397763/endoplasmic-reticulum-stress-and-homeostasis-in-reproductive-physiology-and-pathology
#18
REVIEW
Elif Guzel, Sefa Arlier, Ozlem Guzeloglu-Kayisli, Mehmet Selcuk Tabak, Tugba Ekiz, Nihan Semerci, Kellie Larsen, Frederick Schatz, Charles Joseph Lockwood, Umit Ali Kayisli
The endoplasmic reticulum (ER), comprises 60% of the total cell membrane and interacts directly or indirectly with several cell organelles i.e., Golgi bodies, mitochondria and proteasomes. The ER is usually associated with large numbers of attached ribosomes. During evolution, ER developed as the specific cellular site of synthesis, folding, modification and trafficking of secretory and cell-surface proteins. The ER is also the major intracellular calcium storage compartment that maintains cellular calcium homeostasis...
April 8, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28396012/diagnostic-capacity-of-rassf1a-promoter-methylation-as-a-biomarker-in-tissue-brushing-and-blood-samples-of-nasopharyngeal-carcinoma
#19
Meng Ye, Tao Huang, Chao Ni, Ping Yang, Si Chen
Methylation of the RAS association domain family protein 1A (RASSF1A) promoter has been observed in nasopharyngeal carcinoma (NPC). This study investigated the correlation of RASSF1A promoter methylation with clinicopathological features and its utility as a diagnostic biomarker in NPC. A total of 926 patients with NPC and 495 non-tumor controls were analyzed in this study. RASSF1A promoter methylation was notably higher in NPC compared with non-tumor tissue, brushing and blood samples. RASSF1A promoter methylation was associated with clinical stage, lymph node status, distant metastasis, and T classification of patients with NPC, although it was not linked to age and sex...
April 2, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28394087/epigenome-wide-association-of-dna-methylation-in-whole-blood-with-bone-mineral-density
#20
John A Morris, Pei-Chien Tsai, Roby Joehanes, Jie Zheng, Katerina Trajanoska, Mette Soerensen, Vincenzo Forgetta, Juan Edgar Castillo-Fernandez, Morten Frost, Tim D Spector, Kaare Christensen, Lene Christiansen, Fernando Rivadeneira, Jonathan H Tobias, David M Evans, Douglas P Kiel, Yi-Hsiang Hsu, J Brent Richards, Jordana T Bell
Genetic and environmental determinants of skeletal phenotypes such as bone mineral density (BMD) may converge through the epigenome, providing a tool to better understand osteoporosis pathophysiology. As the epigenetics of BMD have been largely unexplored in humans, we performed an epigenome wide association study (EWAS) of BMD. We undertook a large-scale BMD EWAS using the Infinium HumanMethylation450 array to measure site-specific DNA methylation in up to 5,515 European descent individuals (NDiscovery  = 4,614, NValidation  = 901)...
April 10, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
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