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https://www.readbyqxmd.com/read/28941146/tracheal-repair-with-acellular-human-amniotic-membrane-in-a-rabbit-model
#1
Lianna Ferrari Jorge, Julio C Francisco, Nelson Bergonse, Cristina Baena, Katherine Athayde T Carvalho, Eltyeb Abdelwahid, Jose Rocha Faria Neto, Luiz Felipe Pinho Moreira, Luiz Cesar Guarita-Souza
BACKGROUND: Surgical correction of tracheal stenosis is still a complex and challenging procedure. Acellular human amniotic membranes (AHAM) represent a promising biomaterial source for tissue regeneration. The aim of this study was to evaluate whether AHAM grafts improve tissue regeneration of the trachea in a rabbit model of tracheostomy. METHODS: Twenty rabbits were randomized into two groups. Animals in the control group underwent surgical tracheostomy only and animals in the AHAM group underwent surgical tracheostomy and received an AHAM graft that covered the defect site...
September 22, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28881049/classical-gonadoblastoma-its-relationship-to-the-dissecting-variant-and-undifferentiated-gonadal-tissue
#2
REVIEW
Lawrence M Roth, Liang Cheng
Classical gonadoblastoma occurs almost entirely in the dysgenetic gonads of an individual who has a disorder of sex development. Approximately 40% of such neoplasms are bilateral. Almost all gonadoblastomas occur in patients who have a Y chromosome or part thereof; testis specific protein Y-encoded 1 (TSPY1) is the putative gene. If a gonad in a patient who has a disorder of sex development contains germ cells with delayed maturation and also harbors the TSPY1 gene, the cells can undergo transformation to classical gonadoblastoma...
September 7, 2017: Histopathology
https://www.readbyqxmd.com/read/28872083/-repair-of-articular-cartilage-defects-by-autologous-bone-mesenchymal-stem-cells-and-allogeneic-costal-chondrocytes-in-the-knee-of-wuzhishan-miniature-pigs
#3
Cheng Yang, Jiangdong Ni, Shou Zhang, Zhongcheng Fan
To investigate the feasibility of construction of tissue engineered cartilage by co-culture of bone marrow mesenchymal stem cells (BMSCs) and costal chondrocytes (CCs), and to provide theoretical basis and experimental basis for clinical repair of articular cartilage defects by Wuzhishan miniature pig knee cartilage defects with co-cultured cells.
 Methods: Density gradient centrifugation method was used to isolate BMSCs from Wuzhishan miniature pig. The double enzyme digestion method was used to isolate CCs...
August 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28813619/age-related-changes-in-the-chorioretinal-junction-an-immunohistochemical-study
#4
Tulika Gupta, Narbada Saini, Jasbir Arora, Daisy Sahni
The chorioretinal junction comprises the retinal pigment epithelium, Bruch's membrane (BM), and adjacent choroidal capillaries. Its significance lies in its ability to support the retina mechanically and metabolically. The aim of this cross-sectional study was to record the senescent changes affecting all the constituents of the chorioretinal junction in 40 histological specimens across the whole spectrum of the adult age range. This study included light microscopy, with hematoxylin and eosin and PAS stains, and fluorescent microscopy...
August 1, 2017: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/28807065/possible-role-of-dickkopf-1-protein-in-the-pathogenesis-of-tympanosclerosis-in-a-rat-model
#5
Y Zhang, S Wang, Y Zheng, A Liu
OBJECTIVES: This study aimed to investigate the expression of DKK1 protein in an experimental model of tympanosclerosis and its possible role in the pathogenesis of this disorder. METHODS: Forty Sprague Dawley rats were included in the study: 20 in the control group (which received no treatment) and 20 in the experimental group (which received an incision to induce tympanosclerosis). Otomicroscopy was performed to observe the development of myringosclerosis. Haematoxylin and eosin staining was performed to observe the morphological changes...
August 15, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28805143/a-pre-term-infant-of-32-weeks-gestation-with-congenital-tuberculosis-treated-successfully-with-antituberculosis-chemotherapy
#6
Xiaoyi Fang, Ruizhi Mai, Jizhong Guo, Niyang Lin
An infant of 32 weeks gestation was separated from her mother at birth for treatment of hyaline membrane disease and, on recovery, was cared for by adoptive parents. At 25 days, she was treated for pneumonia with immunoglobulins and multiple antibiotics and appeared to respond. Her symptoms recurred at 8 weeks and tuberculosis was confirmed by detection in an acid-fast bacilli smear of gastric aspirate. Her mother presented with disseminated tuberculosis with meningitis 1 month after delivery. Criteria for the diagnosis of congenital tuberculosis in the infant were confirmed...
August 14, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/28794361/nivolumab-induced-acute-fibrinous-and-organizing-pneumonia-afop
#7
Tsukasa Ishiwata, Takahiro Ebata, Shunichiro Iwasawa, Jun Matsushima, Satoshi Ota, Yukio Nakatani, Kenji Tsushima, Yuji Tada, Koichiro Tatsumi, Yuichi Takiguchi
Although nivolumab is known to cause immune-related interstitial lung diseases (ILD), the detailed characteristics of ILD are still not fully understood. A 68-year-old man was treated with nivolumab because of unresectable sinonasal melanoma, he achieved a complete response soon after the initiation of the therapy and a complete response was thereafter maintained for 30 weeks until the patient experienced dyspnea of subacute onset. CT images revealed patchy infiltrates and ground-glass opacifications. The bronchoalveolar lavage fluid (BALF) contained elevated percentages of lymphocytes (53%) and neutrophils (30%)...
August 10, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28764188/cytology-of-collagenous-spherulosis-a-case-series
#8
Devi Subbarayan, Vijayashree Raghavan
Collagenous Spherulosis (CS) is an uncommon benign entity characterized by the presence of pink hyaline globules composed of basement membrane like material. Although they are known to occur independently, they are more often found as incidental findings in association with benign pro iferative breast lesions. As morphologically similar hyaline globules also occur in certain malignant lesions such as Adenoid Cystic Carcinoma (ACC) and adenomyoepithelial carcinoma, their presence may pose diagnostic problems...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28734808/-congenital-cytomegalovirus-infection-manifesting-as-neonatal-respiratory-distress-in-an-hiv-exposed-uninfected-newborn
#9
A Pham, H El Mjati, N Nathan, F Kieffer, D Mitanchez
BACKGROUND: Cytomegalovirus (CMV) is one of the most common intrauterine infections, affecting approximately 1% of all live births. There are few reports on congenital CMV infections manifesting as isolated pneumonitis. CASE REPORT: We report a case of congenital CMV with neonatal respiratory distress affecting an HIV-exposed uninfected infant. This infant required noninvasive ventilation beginning within the first 15min of life. The initial chest X-ray showed diffuse bilateral ground-glass opacifications...
July 19, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28721683/mesenchymal-stem-progenitor-cells-derived-from-articular-cartilage-synovial-membrane-and-synovial-fluid-for-cartilage-regeneration-current-status-and-future-perspectives
#10
REVIEW
Yi-Zhou Huang, Hui-Qi Xie, Antonietta Silini, Ornella Parolini, Yi Zhang, Li Deng, Yong-Can Huang
Large articular cartilage defects remain an immense challenge in the field of regenerative medicine because of their poor intrinsic repair capacity. Currently, the available medical interventions can relieve clinical symptoms to some extent, but fail to repair the cartilaginous injuries with authentic hyaline cartilage. There has been a surge of interest in developing cell-based therapies, focused particularly on the use of mesenchymal stem/progenitor cells with or without scaffolds. Mesenchymal stem/progenitor cells are promising graft cells for tissue regeneration, but the most suitable source of cells for cartilage repair remains controversial...
July 18, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28665930/kidneys-in-five-year-old-preterm-born-children-a-longitudinal-cohort-monitoring-of-renal-function
#11
Rachel Vieux, Marion Gerard, Audrey Roussel, Aïssata Sow, Amelie Gatin, Francis Guillemin, Jean-Michel Hascoet
BACKGROUND: Knowing the impact of low birth-weight on late onset hypertension, we aimed at: describing systolic blood pressure (sBP) and renal function in 3-5 year-old preterm-born children, and determining which perinatal factors or factors in childhood were associated with an altered renal function at five years in these children. METHODS: Prospective longitudinal cohort study of children born 27-31 weeks gestation included at birth and examined at three, four and five years...
June 30, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28661210/solid-pseudopapillary-neoplasm-of-the-pancreas-a-rare-entity-with-unique-features
#12
REVIEW
Peyman Dinarvand, Jinping Lai
Solid pseudopapillary neoplasm of the pancreas is a rare entity with low malignant potential and excellent overall prognosis. It has nonspecific clinical presentations such as abdominal pain and nausea, with vague radiologic features. Histologic features of this neoplasm are usually specific. The tumor shows minimally cohesive, uniform, monotonous cells lining delicate capillary-sized blood vessels, described as pseudopapillary architecture. Other features including hyaline globules, cytoplasmic vacuoles, and nuclear grooving are frequently present...
July 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28658765/prevalence-of-lung-lesions-at-autopsy-a-histopathological-study
#13
Pratima Khare, Renu Gupta, Mukta Ahuja, Nupur Khare, Swapnil Agarwal, Deepti Bansal
INTRODUCTION: Autopsies are carried out to establish the identity, cause of death, time of death, and ante-mortem or post-mortem nature of death. These help in establishing the cause of death and ascertain the disease process which led to death. AIM: To study the prevalence and pattern of lung diseases in medicolegal autopsies, confirmed by histopathological examination. MATERIALS AND METHODS: This retrospective study was carried out in the Department of Pathology...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28629625/what-exactly-regression-of-atherosclerosis-or-foreign-body-reaction-with-hyaline-arteriosclerosis-drives-transient-scaffolding-of-coronary-arteries-a-pooled-analysis-of-observational-absorb-studies-with-a-serial-multimodality-imaging-substudy-of-absorb-cohort
#14
Alexander N Kharlamov, John A Feinstein, John A Cramer, John A Boothroyd
OBJECTIVES: We aimed to estimate the trends of the artery remodeling after transient scaffolding. BACKGROUND: At least 2.62% reduction of the per cent atheroma volume (PAV) or plaque burden (PB) performed in ABSORB B trial at 60months. METHODS: The detailed multiple serial imaging evaluation was performed by intravascular ultrasound (IVUS) in comparison with quantitative coronary angiography (QCA), multislice CT (MSCT) and optical coherence tomography (OCT) thru 24months in the ABSORB cohort B1 trial (n=45) with the pooled analysis in ABSORB A and B trials (n=131)...
June 6, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28602254/formation-and-germination-of-temporary-cysts-of-cochlodinium-polykrikoides-margalef-dinophyceae-and-their-ecological-role-in-dense-blooms
#15
Hyeon Ho Shin, Zhun Li, Yang Ho Yoon, Seok Jin Oh, Wol-Ae Lim
While the initiation and development of dense bloom of Cochlodinium polykrikoides have been shown to be related to some environmental factors, little is known about the ecological role of the formation and germination of temporary cysts, nor of their significance for the rapid expansion of dense regional-scale blooms. This study examined the factors affecting the formation and germination of temporary cysts of C. polykrikoides, and provides details about the germination process. In the laboratory experiments, C...
June 2017: Harmful Algae
https://www.readbyqxmd.com/read/28587618/effect-of-tryptase-inhibition-on-joint-inflammation-a-pharmacological-and-lentivirus-mediated-gene-transfer-study
#16
Alexandre Denadai-Souza, Camilla Moreira Ribeiro, Corinne Rolland, Anne Thouard, Céline Deraison, Cristoforo Scavone, Daniel Gonzalez-Dunia, Nathalie Vergnolle, Maria Christina Werneck Avellar
BACKGROUND: Increasing evidences indicate that an unbalance between tryptases and their endogenous inhibitors, leading to an increased proteolytic activity, is implicated in the pathophysiology of rheumatoid arthritis. The aim of the present study was to evaluate the impact of tryptase inhibition on experimental arthritis. METHODS: Analysis of gene expression and regulation in the mouse knee joint was performed by RT-qPCR and in situ hybridization. Arthritis was induced in male C57BL/6 mice with mBSA/IL-1β...
June 6, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28578447/maternal-and-neonatal-outcomes-in-twin-and-triplet-gestations-in-western-saudi-arabia
#17
Samera F AlBasri, Ghadah M Shouib, Osama S Bajouh, Hasan A Nasrat, Ejaz Ahmad, Fahad M AlGreisi
Tocompare maternal and neonatal complications in twin and triplet gestations at King Abdulaziz University Hospital, Jeddah, Saudi Arabia. Methods: Retrospective medical records of 165 women with 144 twin and 21 triplet pregnancies from 2004 to 2011 were analyzed. Comparisons were carried out for maternal complications, gestational age at birth, neonatal birth weight, and neonatal intensive care admission. Results: Most common complications were preterm birth (49%), gestational diabetes mellitus (13.3%), and premature rupture of membrane (4...
June 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28570531/a-5-mc-dot-blot-assay-quantifying-the-dna-methylation-level-of-chondrocyte-dedifferentiation-in-vitro
#18
Zhaofeng Jia, Yujie Liang, Bin Ma, Xiao Xu, Jianyi Xiong, Li Duan, Daping Wang
The dedifferentiation of hyaline chondrocytes into fibroblastic chondrocytes often accompanies monolayer expansion of chondrocytes in vitro. The global DNA methylation level of chondrocytes is considered to be a suitable biomarker for the loss of the chondrocyte phenotype. However, results based on different experimental methods can be inconsistent. Therefore, it is important to establish a precise, simple, and rapid method to quantify global DNA methylation levels during chondrocyte dedifferentiation. Current genome-wide methylation analysis techniques largely rely on bisulfite genomic sequencing...
May 17, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28570160/acute-respiratory-distress-syndrome-and-diffuse-alveolar-damage-new-insights-on-a-complex-relationship
#19
Pablo Cardinal-Fernández, José A Lorente, Aída Ballén-Barragán, Gustavo Matute-Bello
Acute respiratory distress syndrome (ARDS) is a major clinical problem with high morbidity and mortality. Diffuse alveolar damage (DAD) is considered the histological hallmark for the acute phase of ARDS. DAD is characterized by an acute phase with edema, hyaline membranes, and inflammation, followed by an organizing phase with alveolar septal fibrosis and type II pneumocyte hyperplasia. Given the difficulties in obtaining a biopsy in patients with ARDS, the presence of DAD is not required to make the diagnosis...
June 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28529572/recurrent-female-adnexal-tumor-of-probable-wolffian-origin-treated-with-debulking-surgery-imatinib-and-paclitaxel-carboplatin-combination-chemotherapy-a-case-report
#20
Akihiko Wakayama, Hirofumi Matsumoto, Hajime Aoyama, Masanao Saio, Ayumi Kumagai, Takuma Ooyama, Morihiko Inamine, Yoichi Aoki
In view of the small number of recurrent and metastatic cases of female adnexal tumors of probable Wolffian origin (FATWO), there is a distinct lack of evidence to support recommendations regarding treatment. In the present study, a 37-year-old female was diagnosed with a left adnexal tumor and underwent a left salpingo-oophorectomy (SO). The tumor was found to arise from the left tubal fimbria and extend to the posterior leaf of the broad ligament. Pathological examination identified a number of solid, tubular and cystic architectures, with areas of hyalinization, hemorrhage and necrosis...
May 2017: Oncology Letters
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