keyword
MENU ▼
Read by QxMD icon Read
search

Yolk sac

keyword
https://www.readbyqxmd.com/read/29352493/effect-of-dietary-manipulation-and-vaccination-of-turkey-breeder-hens-on-immunoglobulin-levels-of-yolk-yolk-sac-and-neonate-poults
#1
A Bhattacharyya, S Majumdar, S K Bhanja, A B Mandal, B B Dash
Two hundred turkey breeder hens and 24 viable toms of 30-35 weeks age of small white variety were distributed into two treatment groups having four replicates of 25 hens and three toms in each treatment. First four replicates were offered a turkey breeder diet (Diet A) (Nutrient requirements of poultry, 1994, National Academic Press, Washington, DC) and the rest four replicates were maintained on a higher plane of nutrition (Diet B) for 8-week duration. After 6 weeks of experimental feeding, two replicates from each treatment groups were vaccinated with ND (R2 B) vaccine...
January 19, 2018: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29342143/regulation-of-embryonic-haematopoietic-multipotency-by-ezh1
#2
Linda T Vo, Melissa A Kinney, Xin Liu, Yuannyu Zhang, Jessica Barragan, Patricia M Sousa, Deepak K Jha, Areum Han, Marcella Cesana, Zhen Shao, Trista E North, Stuart H Orkin, Sergei Doulatov, Jian Xu, George Q Daley
All haematopoietic cell lineages that circulate in the blood of adult mammals derive from multipotent haematopoietic stem cells (HSCs). By contrast, in the blood of mammalian embryos, lineage-restricted progenitors arise first, independently of HSCs, which only emerge later in gestation. As best defined in the mouse, 'primitive' progenitors first appear in the yolk sac at 7.5 days post-coitum. Subsequently, erythroid-myeloid progenitors that express fetal haemoglobin, as well as fetal lymphoid progenitors, develop in the yolk sac and the embryo proper, but these cells lack HSC potential...
January 17, 2018: Nature
https://www.readbyqxmd.com/read/29332656/germ-cell-tumor-causing-pleural-effusion-a-diagnostic-dilemma
#3
Surabhi Jaggi, Reetu Kundu, Sanjeev Binji, Uma Handa, Varinder Saini
Straw colored pleural fluid with raised adenosine deaminase (ADA) levels in young healthy adults usually raises suspicion of tuberculosis, sometimes leading to laxity in carrying thorough physical examination and missing out some important clues with potential disastrous consequences. A 35-year-old male was diagnosed to have left pleural effusion and anti-tubercular treatment was started on the basis of straw colored, lymphocyte-predominant pleural fluid with significantly raised ADA levels. When there was no improvement after 1 month of treatment he was investigated further and found to have a mediastinal mass along with hydro-pneumothorax...
January 2018: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/29324254/prdm14-is-expressed-in-germ-cell-tumors-with-constitutive-overexpression-altering-human-germline-differentiation-and-proliferation
#4
Joanna J Gell, Jasmine Zhao, Di Chen, Timothy J Hunt, Amander T Clark
Germ cell tumors (GCTs) are a heterogeneous group of tumors occurring in gonadal and extragonadal locations. GCTs are hypothesized to arise from primordial germ cells (PGCs), which fail to differentiate. One recently identified susceptibility loci for human GCT is PR (PRDI-BF1 and RIZ) domain proteins 14 (PRDM14). PRDM14 is expressed in early primate PGCs and is repressed as PGCs differentiate. To examine PRDM14 in human GCTs we profiled human GCT cell lines and patient samples and discovered that PRDM14 is expressed in embryonal carcinoma cell lines, embryonal carcinomas, seminomas, intracranial germinomas and yolk sac tumors, but is not expressed in teratomas...
January 4, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29323706/the-origins-and-homeostasis-of-monocytes-and-tissue-resident-macrophages-in-physiological-situation
#5
REVIEW
Yang Zhao, Weilong Zou, Junfeng Du, Yong Zhao
Monocytes and macrophages are critical effectors and regulators of innate immune response. They not only play crucial and distinctive roles in homeostasis, but also contribute to some pathologic processes. The heterogeneity of the macrophage lineage has been widely recognized and, in part, is a result of the specialization of resident macrophages in particular tissue microenvironments. Monocytes are usually known to originate in the bone marrow from a common myeloid progenitor that is shared with neutrophils, and they are then released into the peripheral blood...
January 11, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29323075/bilateral-lung-metastases-unveils-an-asymptomatic-sacrococcygeal-yolk-sac-tumor
#6
Krishnendu Mondal, Rupali Mandal
Sacrococcygeal yolk sac tumor is an uncommon pediatric neoplasm. It usually presents with intra-abdominal or gluteal pain and mass. At later stage, it disseminates to regional nodes and distant organs. We describe one such neoplasm in an 18-month-old male child who turned symptomatic with multiple bilateral lung metastases. The tumor produced the least deformity to his physique, to become detectable on routine inspection and clinical examination. Finally, a combined approach through clinical, radiological, pathological, and biochemical perspectives established the diagnosis...
October 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29321604/trophic-transfer-and-individual-impact-of-nano-sized-polystyrene-in-a-four-species-freshwater-food-chain
#7
Yooeun Chae, Dokyung Kim, Shin Woong Kim, Youn-Joo An
This study investigated the trophic transfer, individual impact, and embryonic uptake of fluorescent nano-sized polystyrene plastics (nanoplastics) through direct exposure in a freshwater ecosystem, with a food chain containing four species. The alga Chlamydomonas reinhardtii, water flea Daphnia magna, secondary-consumer fish Oryzias sinensis, and end-consumer fish Zacco temminckii were used as test species. In the trophic transfer test, algae were exposed to 50 mg/L nanoplastics, defined as plastic particles <100 nm in diameter; higher trophic level organisms were exposed through their diet...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29318787/primary-mediastinal-yolk-sac-tumor-treated-with-platinum-based-chemotherapy-and-extended-resection-report-of-seven-cases
#8
Bing Liu, Gang Lin, Jingwei Liu, Haibo Liu, Xueqian Shang, Jian Li
BACKGROUND: Primary mediastinal yolk sac tumor, which is also known as endodermal sinus tumor, is a rare but lethal neoplasm, and it is a kind of mediastinal non-seminomatous germ cell tumor. The current standard treatment in mediastinal non-seminomatous germ cell tumors is chemotherapy combined with postchemotherapy residual mass resection. We report on seven cases of primary mediastinal yolk sac tumor treated with platinum-based chemotherapy and extended resection. METHODS: We experienced seven cases of primary mediastinal yolk sac tumor between August 2014 and August 2017...
January 10, 2018: Thoracic Cancer
https://www.readbyqxmd.com/read/29316210/fate-of-egg-proteins-during-the-development-of-columba-livia-domestica-embryo
#9
Seba Jamal Shbailat, Ibtisam Omar Aslan
The transfer of egg white into the yolk and consumption of yolk proteins by the embryo are largely unexplored in the pigeon Columba livia domestica. Here, we investigated the route of egg white transfer as well as the degradation and uptake of yolk proteins by the pigeon embryo. Initially, we tested the electrophoretic patterns of proteins in different egg compartments throughout development. Then, we used lysozyme as a reference protein to follow the egg white transfer, and we measured its activity using Micrococcus lysodeikticus as a substrate...
January 3, 2018: Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
https://www.readbyqxmd.com/read/29313594/effects-of-different-rearing-temperatures-on-muscle-development-and-stress-response-in-the-early-larval-stages-of-acipenser-baerii
#10
Lucia Aidos, Luisa M Pinheiro Valente, Vera Sousa, Marco Lanfranchi, Cinzia Domeneghini, Alessia Di Giancamillo
The present study aims at investigating muscle development and stress response in early stages of Siberian sturgeon when subjected to different rearing temperatures, by analysing growth and development of the muscle and by assessing the stress response of yolk-sac larvae. Siberian sturgeon larvae were reared at 16°C, 19°C and 22°C until the yolk-sac was completely absorbed. Sampling timepoints were: hatching, schooling and complete yolk-sac absorption stage. Histometrical, histochemical and immunohistochemical analyses were performed in order to characterize muscle growth (total muscle area, TMA; slow muscle area, SMA; fast muscle area, FMA), development (anti-proliferating cell nuclear antigen -PCNA or anticaspase) as well as stress conditions by specific stress biomarkers (heat shock protein 70 or 90, HSP70 or HSP90)...
November 28, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/29311541/yolk-sac-macrophage-progenitors-traffic-to-the-embryo-during-defined-stages-of-development
#11
C Stremmel, R Schuchert, F Wagner, R Thaler, T Weinberger, R Pick, E Mass, H C Ishikawa-Ankerhold, A Margraf, S Hutter, R Vagnozzi, S Klapproth, J Frampton, S Yona, C Scheiermann, J D Molkentin, U Jeschke, M Moser, M Sperandio, S Massberg, F Geissmann, C Schulz
Tissue macrophages in many adult organs originate from yolk sac (YS) progenitors, which invade the developing embryo and persist by means of local self-renewal. However, the route and characteristics of YS macrophage trafficking during embryogenesis are incompletely understood. Here we show the early migration dynamics of YS-derived macrophage progenitors in vivo using fate mapping and intravital microscopy. From embryonic day 8.5 (E8.5) CX3CR1+ pre-macrophages are present in the mouse YS where they rapidly proliferate and gain access to the bloodstream to migrate towards the embryo...
January 8, 2018: Nature Communications
https://www.readbyqxmd.com/read/29304412/developmental-toxicity-and-potential-mechanisms-of-pyraoxystrobin-to-zebrafish-danio-rerio
#12
Hui Li, Song Yu, Fangjie Cao, Chengju Wang, Mingqi Zheng, Xuefeng Li, Lihong Qiu
As a newly developed, highly efficient strobilurin fungicide, pyraoxystrobin has been reported to be highly toxic to some aquatic organisms. However, the toxicity of pyraoxystrobin to different life stages of fish and the potential underlying mechanisms are still unknown. Hence, in the present study, the acute toxicity of pyraoxystrobin to different life stages of zebrafish (embryo, larva, and adult) was assessed. The developmental toxicity of pyraoxystrobin to zebrafish embryos and its effects on gene transcription in the embryo were also investigated...
January 2, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29287940/many-layers-of-embryonic-hematopoiesis-new-insights-into-b-cell-ontogeny-and-the-origin-of-hematopoietic-stem-cells
#13
Brandon Hadland, Momoko Yoshimoto
In adult hematopoiesis, the hematopoietic stem cell (HSC) sits at the top of a hierarchy of hematopoietic progenitors responsible for generating the diverse repertoire of blood and immune cells. During embryonic development, however, the initial waves of hematopoiesis provide the first functioning blood cells of the developing embryo, such as primitive erythrocytes arising in the yolk sac, independently of HSC. In the field of developmental immunology, it has been recognized that some components of the immune system, such as B-1a lymphocytes, are uniquely produced during the embryonic and neonatal period, suggesting a "layered" development of immunity...
December 26, 2017: Experimental Hematology
https://www.readbyqxmd.com/read/29286555/gonadal-dysgenesis-is-associated-with-worse-outcomes-in-patients-with-ovarian-nondysgerminomatous-tumors-a-report-of-the-children-s-oncology-group-agct-0132-study
#14
Bryan J Dicken, Deborah F Billmire, Mark Krailo, Caihong Xia, Furqan Shaikh, John W Cullen, Thomas A Olson, Farzana Pashankar, Marcio H Malogolowkin, James F Amatruda, Frederick J Rescorla, Rachel A Egler, Jonathan H Ross, Carlos Rodriguez-Galindo, A Lindsay Frazier
PURPOSE: In this report, we characterize the timing and behavior of malignant ovarian germ cell tumors (GCTs) in pediatric patients with dysgenetic gonads compared to those with normal gonadal development. PATIENTS AND METHODS: Patients from the Children's Oncology Group AGCT0132 with malignant ovarian GCTs were included. Within this population, we sought to identify patients with gonadoblastoma, streak ovaries, or other evidence of gonadal dysgenesis (GD). Patients with malignant GCTs containing one or more of the following histologies-yolk sac tumor, embryonal carcinoma, or choriocarcinoma-were included...
December 29, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29286292/the-phagocytic-function-of-macrophage-enforcing-innate-immunity-and-tissue-homeostasis
#15
REVIEW
Daisuke Hirayama, Tomoya Iida, Hiroshi Nakase
Macrophages are effector cells of the innate immune system that phagocytose bacteria and secrete both pro-inflammatory and antimicrobial mediators. In addition, macrophages play an important role in eliminating diseased and damaged cells through their programmed cell death. Generally, macrophages ingest and degrade dead cells, debris, tumor cells, and foreign materials. They promote homeostasis by responding to internal and external changes within the body, not only as phagocytes, but also through trophic, regulatory, and repair functions...
December 29, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29277272/classics-revisited-miguel-fern%C3%A3-ndez-on-germ-layer-inversion-and-specific-polyembryony-in-armadillos
#16
REVIEW
A M Carter
BACKGROUND: Miguel Fernández was an Argentinian zoologist who published the first account of obligate polyembryony in armadillos. His contribution is here discussed in relation to his contemporaries, Newman and Patterson, and more recent work. FINDINGS: Fernandez worked on the mulita (Dasypus hybridus). He was able to get early stages before twinning occurred and show it was preceded by inversion of the germ layers. By the primitive streak stage there were separate embryonic shields and partition of the amnion...
January 2018: Placenta
https://www.readbyqxmd.com/read/29248475/alleviating-the-hepatotoxicity-of-trazodone-via-supramolecular-encapsulation
#17
Qiaoxian Huang, Shengke Li, Hang Yin, Chunming Wang, Simon M Y Lee, Ruibing Wang
In order to develop a novel strategy to alleviate the inherent hepatotoxicity of antidepressant trazodone (TZ), Cucurbit[7]uril (CB[7]) was adopted as pharmaceutical excipients and was studied for its capability to reduce the hepatotoxicity of TZ via supramolecular encapsulation. CB[7] was found to form strong 1:1 host-guest complexes with TZ and its metabolite m-chlorophenyl piperazine (mCPP), with binding constants of 1.50 (±0.13) × 106 M-1 and 6.90 (±0.49) × 105 M-1, respectively. The supramolecular complexations were examined by 1H NMR and UV-visible spectroscopic titrations, ESI-MS and ITC...
December 14, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29245524/-i-sinorhodeus-i-i-microlepis-i-a-new-genus-and-species-of-bitterling-from-china-teleostei-cyprinidae-acheilognathinae
#18
Fan Li, Te-Yu Liao, Ryoichi Arai, Liangjie Zhao
A new genus and species, Sinorhodeus microlepis gen. et sp. nov., is described from a tributary of the Yangtze River, in Chongqing City, China. Sinorhodeus gen. nov. can be distinguished from four closely related genera, Paratanakia, Pseudorhodeus, Rhodeus, and Tanakia, by the following combination of characters: pharyngeal teeth 0,0,4-4,0,0, longitudinal scales 41-46, white spots on dorsal-fin rays absent, a black blotch on dorsal fin in juvenile absent, and less developed wing-like yolk sac projections in larvae...
November 22, 2017: Zootaxa
https://www.readbyqxmd.com/read/29245261/extraperitoneal-robot-assisted-laparoscopic-retroperitoneal-lymph-node-dissection-for-early-stage-testicular-nonseminomatous-germ-cell-tumors-a-case-report-and-literature-review
#19
REVIEW
Jie Qin, Ping Wang, Taile Jing, Debo Kong, Dan Xia, Shuo Wang
RATIONALE: Typically robot-assisted laparoscopic retroperitoneal lymph node dissection (R-RPLND) has been performed via a transperitoneal approach. Herein we report the first case of a novel R-RPLND using an extraperitoneal approach. PATIENT CONCERNS: A 38-year-old man presented with an enlarging right scrotal mass. DIAGNOSES: Scrotal ultrasonography demonstrated a 5.5-cm solid mass of the right testis. The patient underwent right radical inguinal orchiectomy...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29242557/the-metabolic-syndrome-associated-small-g-protein-arl15-plays-a-role-in-adipocyte-differentiation-and-adiponectin-secretion
#20
Nuno Rocha, Felicity Payne, Isabel Huang-Doran, Alison Sleigh, Katherine Fawcett, Claire Adams, Anna Stears, Vladimir Saudek, Stephen O'Rahilly, Inês Barroso, Robert K Semple
Common genetic variants at the ARL15 locus are associated with plasma adiponectin, insulin and HDL cholesterol concentrations, obesity, and coronary atherosclerosis. The ARL15 gene encodes a small GTP-binding protein whose function is currently unknown. In this study adipocyte-autonomous roles for ARL15 were investigated using conditional knockdown of Arl15 in murine 3T3-L1 (pre)adipocytes. Arl15 knockdown in differentiated adipocytes impaired adiponectin secretion but not adipsin secretion or insulin action, while in preadipocytes it impaired adipogenesis...
December 14, 2017: Scientific Reports
keyword
keyword
53492
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"