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https://www.readbyqxmd.com/read/29156096/males-that-drop-a-sexually-selected-weapon-grow-larger-testes
#1
Paul N Joseph, Zachary Emberts, Daniel A Sasson, Christine W Miller
Costly sexually selected weapons are predicted to trade off with postcopulatory traits, such as testes. Although weapons can be important for achieving access to females, individuals of some species can permanently drop (i.e. autotomize) their weapons, without regeneration, to escape danger. We capitalized on this natural behavior to experimentally address whether the loss of a sexually selected weapon leads to increased testes investment in the leaf-footed cactus bug, Narnia femorata Stål (Hemiptera: Coreidae)...
November 20, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/29156057/prgdb-3-0-a-comprehensive-platform-for-prediction-and-analysis-of-plant-disease-resistance-genes
#2
Cristina M O Cruz, Andreu Paytuvi-Gallart, Antimo Di Donato, Vicky Sundesha, Giuseppe Andolfo, Riccardo Aiese Cigliano, Walter Sanseverino, Maria R Ercolano
The Plant Resistance Genes database (PRGdb; http://prgdb.org) has been redesigned with a new user interface, new sections, new tools and new data for genetic improvement, allowing easy access not only to the plant science research community but also to breeders who want to improve plant disease resistance. The home page offers an overview of easy-to-read search boxes that streamline data queries and directly show plant species for which data from candidate or cloned genes have been collected. Bulk data files and curated resistance gene annotations are made available for each plant species hosted...
November 16, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29155942/detergent-based-decellularization-strategy-preserves-macro-and-microstructure-of-heart-valves
#3
Jessica Haupt, Georg Lutter, Stanislav N Gorb, Dan T Simionescu, Derk Frank, Jette Seiler, Alina Paur, Irma Haben
OBJECTIVES: Biological tissue has great potential to function as bioprostheses in patients for heart valve replacement. As these matrices are mainly xenogenic, the immunogenicity needs to be reduced by decellularization steps. Reseeding of bioscaffolds has tremendous potential to prevent calcification upon implantation, so intact microstructure of the material is mandatory. An optimal decellularization protocol of heart valves resulting in adequate preservation of the extracellular architecture has still not been developed...
October 9, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29155935/early-and-late-outcomes-of-open-repair-for-dissecting-aneurysms-of-the-descending-or-thoraco-abdominal-aorta
#4
Atsushi Omura, Kenji Minatoya, Jiro Matsuo, Yosuke Inoue, Yoshimasa Seike, Kyokun Uehara, Hiroaki Sasaki, Hitoshi Matsuda, Junjiro Kobayashi
OBJECTIVES: Although open repair is the standard surgical option for dissecting descending thoracic aneurysms (DTAs) and thoraco-abdominal aorta aneurysms (TAAAs), it remains a significant challenge with considerable perioperative morbidity and mortality. We retrospectively analysed early and late outcomes of open repair for these aortic aneurysms. METHODS: Early and late outcomes were investigated for 223 consecutive patients who underwent open repair for dissecting DTA or TAAA between January 2003 and December 2014 (mean age 55 ± 16 years)...
October 9, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29155891/the-burden-of-gynecomastia-among-men-on-antiretroviral-therapy-in-zomba-malawi
#5
Victor Singano, Alemayehu Amberbir, Daniela Garone, Christopher Kandionamaso, Jack Msonko, Monique van Lettow, Kondwani Kalima, Yamikani Mataka, Gift Kawalazira, Gabriel Mateyu, Aunex Kwekwesa, Alfred Matengeni, Joep J van Oosterhout
BACKGROUND: Many Africans who are on life-saving ART face challenges from a variety of toxicities. After the introduction of a standardized first-line efavirenz-containing ART regimen, reports of gynecomastia appeared in Malawian popular media, however data on the prevalence and risk factors of gynecomastia from Africa are lacking. METHODS: We conducted a cross-sectional study in males ≥18 years registered on ART at the HIV clinic in Zomba Central Hospital. Men who reported to have ever experienced breast or nipple enlargement received a standard questionnaire and underwent physical examination...
2017: PloS One
https://www.readbyqxmd.com/read/29155772/preparation-of-primary-acute-lymphoblastic-leukemia-cells-in-different-cell-cycle-phases-by-centrifugal-elutriation
#6
Magdalena Delgado, Anisha Kothari, Walter N Hittelman, Timothy C Chambers
The ability to synchronize cells has been central to advancing our understanding of cell cycle regulation. Common techniques employed include serum deprivation; chemicals which arrest cells at different cell cycle phases; or the use of mitotic shake-off which exploits their reduced adherence. However, all of these have disadvantages. For example, serum starvation works well for normal cells but less well for tumor cells with compromised cell cycle checkpoints due to oncogene activation or tumor suppressor loss...
November 10, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155740/creation-of-a-rodent-model-of-abdominal-aortic-aneurysm-by-blocking-adventitial-vasa-vasorum-perfusion
#7
Hiroki Tanaka, Naoki Unno, Tatsuro Yata, Hirona Kugo, Nobuhiro Zaima, Takeshi Sasaki, Tetsumei Urano
The adventitial vasa vasorum (VV) provides oxygen and nourishment to the aortic wall. Hypoxia in the aortic wall can cause enlarged abdominal aortic aneurysms (AAAs). This article introduces and describes a standard protocol used to induce AAAs through adventitial VV hypoperfusion created with a combination of polyurethane catheter insertion into the aortic lumen and suture ligation of the infrarenal abdominal aorta. The protocol involves the use of male rats weighing 300-400 g, which are provided food and water ad libitum...
November 8, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155621/science-to-practice-enhancing-photothermal-ablation-of-colorectal-liver-metastases-with-targeted-hybrid-nanoparticles
#8
Xiaoming Yang
Image-guided percutaneous thermal ablation has been one of the principal tools in management of unresectable liver malignancies, including colorectal liver metastases (CRLM) ( 1 ). Currently, however, this technique is suitable mainly for tumors less than 4-5 cm in diameter and also results in incomplete ablation at tumor margins ( 2 ). To solve these problems, efforts have been made to combine thermal ablation with other treatment options, such as systemic and intra-arterial administration of therapeutics ( 3 - 5 )...
December 2017: Radiology
https://www.readbyqxmd.com/read/29155259/polyi-c-model-of-schizophrenia-in-rats-induces-functional-brain-changes-detected-by-mri-irreversible-by-aripiprazole-treatment
#9
Eva Drazanova, Jana Ruda-Kucerova, Lucie Kratka, Katerina Horska, Regina Demlova, Zenon Starcuk, Tomas Kasparek
BACKGROUND AND PURPOSE: One of the hallmarks of schizophrenia is altered brain structure, potentially due to antipsychotic treatment, the disorder itself or both. It was proposed that functional changes may precede the structural ones. In order to understand and potentially prevent this unwanted process, brain function assessment should be validated as a diagnostic tool. METHODS: We used Arterial Spin Labelling MRI technique for the evaluation of brain perfusion in several brain regions in a neurodevelopmental poly(I:C) model of schizophrenia (8 mg/kg on a gestational day 15) in rats taking into account sex-dependent effects and chronic treatment with aripiprazole (30 days), an atypical antipsychotic acting as a partial agonist on dopaminergic receptors...
November 16, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/29155215/membrane-estrogen-receptors-signal-to-determine-transcription-factor-function
#10
Ellis R Levin
Estrogen receptors (ER) alpha and beta as well as many other steroid receptors are found both within the nucleus and outside the nucleus. This includes extra-nuclear receptors in many organelles, including mitochondria, endoplasmic reticulum, cytosolic endosomes, and membrane lipid rafts, such as caveolae. The functions of these receptors in the various extra-nuclear cell organelles are not well described, but progress for understanding steroid receptor signaling from the membrane has advanced. In this Review I will discuss the enlarging role of membrane ER signaling to the expression, cell localization, and function of transcription factors that are essential to mediate cell physiology or pathophysiology in many organs...
November 16, 2017: Steroids
https://www.readbyqxmd.com/read/29155083/tbvps15-is-required-for-vesicular-transport-and-cytokinesis-in-trypanosoma-brucei
#11
Alejandra C Schoijet, Kildare Miranda, Tamara Sternlieb, Nadia M Barrera, Wendell Girard-Dias, Wanderley de Souza, Guillermo D Alonso
The class III phosphatidylinositol 3-kinase (PI3K) Vps34 is an important regulator of key cellular functions, including cell growth, survival, intracellular trafficking, autophagy and nutrient sensing. In yeast, Vps34 is associated with the putative serine/threonine protein kinase Vps15, however, its role in signaling has not been deeply evaluated. Here, we have identified the Vps15 orthologue in Trypanosoma brucei, named TbVps15. Knockdown of TbVps15 expression by interference RNA resulted in inhibition of cell growth and blockage of cytokinesis...
November 16, 2017: Molecular and Biochemical Parasitology
https://www.readbyqxmd.com/read/29154985/adolescent-hydrocele-carrying-a-surprise-a-case-of-papillary-cystadenoma-of-the-epididymis
#12
A Soria Gondek, V Julià Masip, C Jou Muñoz, H Salvador Hernández, C Rovira Zurriaga, X Tarrado Castellarnau
Papillary cystadenoma of the epididymis (PCE) is a rare benign epithelial tumor remarkable for its association with Von Hippel-Lindau disease (VHLD). A 12-year-old male consulted for a progressive enlargement of the left testicle. At time of surgery, the whole epididymis was enlarged. Pathological diagnosis was PCE with a focus of borderline malignancy. Scrotal left epididymectomy was performed. VHLD screening was negative. No relapse has been detected two years later. In case of atypical clinical examination of a hydrocele, unusual presentations such as PCE should be considered...
November 15, 2017: Urology
https://www.readbyqxmd.com/read/29154983/giant-renal-angiomyolipoma-following-ovarian-stimulation-therapy
#13
Elieser H Watanabe, Precil D Neves, Bruno E Balbo, Carlos A Sampaio, Luiz F Onuchic
Renal angiomyolipomas (AML) are benign tumors with higher prevalence in women. Female hormones have been shown to induce AML enlargement. This case refers to a 40-year-old woman with four left kidney AMLs, the larger ones with 1.0 and 1.3 cm. Ten months after ovarian stimulation for egg harvesting, a computed tomography revealed an 18-cm AML with large-caliber vessels. Given her high risk of AML bleeding, the patient was submitted to selective arterial embolization, which turned out unsuccessful, supporting a plan of nephron-sparing surgery...
November 15, 2017: Urology
https://www.readbyqxmd.com/read/29154708/urethral-diverticulum-and-urolithiasis-in-a-female-guinea-pig-cavia-porcellus
#14
Lily A B Parkinson, Jennifer C Hausmann, Robert J Hardie, Megan A Mickelson, Kurt K Sladky
CASE DESCRIPTION A 5-year-old sexually intact female guinea pig was evaluated because of mild dysuria and a subcutaneous mass located cranioventral to the urogenital openings. CLINICAL FINDINGS Non-contrast-enhanced CT and surgical exploration of the distal aspect of the urethra revealed a urethral diverticulum with an intraluminal urolith. Analysis revealed that the urolith was composed of calcium carbonate and struvite. TREATMENT AND OUTCOME The urolith was surgically removed and ablation of the urethral diverticulum was attempted...
December 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29153677/the-efficacy-of-peripartum-transthoracic-echocardiography-in-women-with-preeclampsia
#15
Sae Kyung Choi, Jong Chul Shin, Yong Gyu Park, In Yang Park, Ji Young Kwon, Hyun Sun Ko, Yeon Hee Kim
OBJECTIVE: To examine the features and efficacy of transthoracic echocardiography (TTE) in preeclampsia. METHODS: We retrospectively reviewed the medical records of 145 pregnant women with preeclampsia, who underwent TTE at Seoul St. Mary's Hospital between July 2006 and June 2016. We analyzed echocardiographic features in preeclampsia and the relationship between the severity of preeclampsia and TTE findings. Additionally, we examined the predictive echocardiographic factors of persistent hypertension and calculated the adjusted odds ratio (OR) and 95% confidence interval (CI) for multiple regression models by considering systolic and diastolic blood pressure and pre-pregnancy body mass index (BMI)...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29153652/enzymes-catalyzing-pre-hydrolysis-facilitated-the-anaerobic-fermentation-of-waste-activated-sludge-with-acidogenic-and-microbiological-perspectives
#16
Xiaodong Xin, Junguo He, Lin Li, Wei Qiu
This study investigated acidogenic and microbiological perspectives in the anaerobic fermentation (AF) of waste activated sludge (WAS) pre-hydrolyzed by enzymes catalysis. The enzymes catalysis boosted WAS biodegradability dramatically with nearly 8500 mg/L soluble chemical oxygen demand (SCOD) increase just within 4 h. The volatile fatty acids (VFAs) in the acidogenesis were accumulated effectively with over 3200 mg COD/L in 12 d, which reached 0.687 kWh/kg VSS electricity conversion efficiency (2...
October 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29153441/complex-endovascular-repair-of-postdissection-arch-and-thoracoabdominal-aneurysms
#17
Rafaëlle Spear, Adrien Hertault, Katrien Van Calster, Nicla Settembre, Matthieu Delloye, Richard Azzaoui, Jonathan Sobocinski, Dominique Fabre, Mark Tyrrell, Stéphan Haulon
OBJECTIVE: We report our experience of the treatment of postdissection arch aneurysms and thoracoabdominal aortic aneurysms (TAAAs) by endovascular repair using fenestrated and branched endografts. METHODS: This study includes all patients presenting with chronic postdissection aneurysms >55 mm in diameter deemed unfit for open surgery and treated by complex endografting between October 2011 and April 2017. Where appropriate, staged management strategies including left subclavian artery revascularization, thoracic endografting, dissection flap fenestration, and tear enlargement were performed before the complex endovascular repair...
November 15, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29152946/the-effects-of-mesenchymal-stem-cells-on-the-structure-and-contractile-force-of-the-carotid-artery-in-a-rat-aneurysm-model
#18
(no author information available yet)
Background/aim: An aneurysm is a pathological enlargement of an artery characterized by the thinning of the elastic fiber layer in the tunica media. Because the aneuritic artery wall is weakened, these vessels can rupture and cause serious bleeding. Surgical methods are often used for the treatment of aneurysms. However, cell-based therapies are less invasive and potentially safer alternatives. In this study, the therapeutic efficacy of rat adipose tissue-derived mesenchymal stem cells (MSCs) was investigated in a new carotid artery aneurysm model...
November 13, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29152312/a-4-year-study-of-the-proportional-distribution-of-male-reproductive-organ-abnormalities-in-cattle-slaughtered-at-nyagatare-abattoir-eastern-rwanda
#19
Erick Kandiwa, Leoncie Nyirakunzimana, Gervais Habarugira, Borden Mushonga, Alaster Samkange
Male reproductive performance has more impact on overall herd productivity than in the female. In order to assess herd productivity in cattle in Nyagatare, Eastern Rwanda, the proportional distribution of male reproductive organ abnormalities was investigated in 3087 bulls slaughtered over a 4-year period. The aim of the study was to investigate the proportional distribution of male reproductive organ abnormalities in exotic and indigenous bulls slaughtered over a 4-year period at Nyagatare abattoir in Eastern Rwanda...
November 2017: Veterinary Medicine and Science
https://www.readbyqxmd.com/read/29151960/r-e-n-a-l-nephrometry-score-a-preoperative-risk-factor-predicting-the-fuhrman-grade-of-clear-cell-renal-carcinoma
#20
Shao-Hao Chen, Yu-Peng Wu, Xiao-Dong Li, Tian Lin, Qing-Yong Guo, Ye-Hui Chen, Jin-Bei Huang, Yong Wei, Xue-Yi Xue, Qing-Shui Zheng, Ning Xu
Objective: The purpose of this study was to evaluate the efficacy and feasibility of the R.E.N.A.L. Nephrometry Score to postoperatively predict high-grade clear-cell renal carcinoma (ccRCC). Methods: The study included 288 patients diagnosed with ccRCC who had complete CT/CTA data and R.E.N.A.L. Nephrometry Scores and underwent renal surgery at our center between January 2012 and December 2015. The relationship between the pathological grade of renal masses and R.E.N.A.L. Nephrometry Score was evaluated. Results: Univariate analysis indicated that diagnostic modality, cystic necrosis, enlargement of the regional lymph node, distant metastasis, clinical T stage, TNM stage, surgical modality, tumor size, nearness of the tumor to the collecting system or sinus, total Nephrometry Score and individual anatomic descriptor components were significantly associated with postoperative tumor grade (P < 0...
2017: Journal of Cancer
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