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cord lining epithelial cells

Yaroslav O Kamenev, Igor Y Dolmatov
The regeneration of the anterior portion of the body after fission was studied in the holothurian Cladolabes schmeltzii using electron microscopy methods. Following fission, the posterior portion of the digestive tube, cloaca, and respiratory trees remain in the posterior fragment of the body. The regeneration comprises five stages. In the first stage, connective-tissue thickening (an anlage of the aquapharyngeal bulb) occurs on the anterior end between the torn-off ends of the ambulacra. Most of the lost anterior organs developed in the second and third stages...
October 7, 2016: Microscopy Research and Technique
Diana Maria Anastasiu, Ada Cean, Maria Florina Bojin, Adrian Gluhovschi, Carmen Panaitescu, Virgil Păunescu, Gabriela Tănăsie
In recent years, identification of new sources of adult stem cells developed rapidly, pursuing to find easily available tissues, which will give rise to homogenous stem cells populations. Up to present, bone marrow-derived mesenchymal stem cells (BM-MSCs) are unanimously considered to fulfill the criteria for being used in clinical settings, but adipose stem cells, placental and umbilical cord stem cells, and other tissue-derived stem cells are making their way to being used at least in autologous transplantation...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
Sachin Manocha, Dushyant Lal, Subramanian Venkataraman
BACKGROUND: Nonsteroidal anti-inflammatory drugs induces gastric mucosal lesions because of its acidic properties. Ranitidine, an H2 receptor antagonist, has proved beneficial in patients with gastric ulcers. OBJECTIVE: The present study was performed to assess the effect of administering ranitidine in Nonsteroidal anti-inflammatory drugs (diclofenac, nimesulide) induced gastropathy, and their effect on the histopathology of stomach, kidney and liver. METHODS: Diclofenac, nimesulide, and ranitidine were administered in doses of 2, 4, and 6 mg/kg, p...
January 2016: Arquivos de Gastroenterologia
Kathryn Futrega, Jianshi Yu, Jace W Jones, Maureen A Kane, William B Lott, Kerry Atkinson, Michael R Doran
Polydimethylsiloxane (PDMS) is the most commonly used material in the manufacture of customized cell culture devices. While there is concern that uncured PDMS oligomers may leach into culture medium and/or hydrophobic molecules may be absorbed into PDMS structures, there is no consensus on how or if PDMS influences cell behaviour. We observed that human umbilical cord blood (CB)-derived CD34(+) cells expanded in standard culture medium on PDMS exhibit reduced CD38 surface expression, relative to cells cultured on tissue culture polystyrene (TCP)...
April 21, 2016: Lab on a Chip
Ravi Kumar, K P Joy, S M Singh
In the catfish Heteropneustes fossilis, the anterior kidney is a hemopoietic tissue which surrounds the adrenal homologues, interrenal (IR) and chromaffin tissues corresponding to the adrenal cortical and adrenal medulla of higher mammals. The IR tissue is arranged in cell cords around the posterior cardinal vein (PCV) and its tributaries and secretes corticosteroids. The chromaffin tissue is scattered singly or in nests of one or more cells around the epithelial lining of the PCV or blood capillaries within the IR tissue...
October 2016: Fish Physiology and Biochemistry
Zhengbu Liao, Jing Wu, Mingjun Wu, Yi Yan, Haiquan Wang, Chongjie Cheng, Wenyuan Tang
Up to now, the serine-arginine protein kinase 1 (SRPK1) has been suggested as an important signal mediator, which is implicated in the development of cancers. Unfortunately, some molecular pathways in SRPK1-mediated epithelial-mesenchymal transition (EMT) in human spinal glioblastoma have been not elucidated. In this work, we detected the expression of SRPK1 in human spinal glioblastoma tissues and GBM cell lines and analyzed the relevant molecular proteins using in vitro experiments, including RT-PCR, gene silencing, and Western blot...
February 18, 2016: Molecular Neurobiology
S A Moore
Ependymal cells are epithelial support cells that line the central canal and ventricular cavities of the central nervous system, providing the interface between the cerebrospinal fluid and the parenchyma of the brain and spinal cord. The spinal ependymal layer (SEL) is composed of 3 main cell types: tanycytes, ependymocytes, and cerebrospinal fluid-contacting neurons. A fourth cell type, termed the supraependymal cell, is also occasionally described. Cells of the SEL show restricted proliferative capacity in health but display neural stem cell properties both in vitro and in vivo in various disease states...
July 2016: Veterinary Pathology
Jorge Tuma, Antonio Carrasco, Jorge Castillo, Carlos Cruz, Alvaro Carrillo, Jose Ercilla, Carlos Yarleque, Jaime Cunza, Courtney E Bartlett, Amalia A Winters, Francisco J Silva, Amit N Patel
BACKGROUND: Cell therapy is an evolving option for patients with end stage heart failure. First generation cell therapy trials have had marginal success. Our goal was to evaluate retrograde delivery of allogeneic umbilical cord sub-epithelial cells (UCSEC) in patients with heart failure. METHODS: A prospective open label dose escalation study of the safety and feasibility of UCSEC infused retrograde into the coronary sinus was performed. Patients received a single dose of either 100 million (M), 200M or 400M cells...
January 13, 2016: Cell Transplantation
Jaichandran Sivalingam, Dimitar Kenanov, Hao Han, Ajit Johnson Nirmal, Wai Har Ng, Sze Sing Lee, Jeyakumar Masilamani, Toan Thang Phan, Sebastian Maurer-Stroh, Oi Lian Kon
Costly coagulation factor VIII (FVIII) replacement therapy is a barrier to optimal clinical management of hemophilia A. Therapy using FVIII-secreting autologous primary cells is potentially efficacious and more affordable. Zinc finger nucleases (ZFN) mediate transgene integration into the AAVS1 locus but comprehensive evaluation of off-target genome effects is currently lacking. In light of serious adverse effects in clinical trials which employed genome-integrating viral vectors, this study evaluated potential genotoxicity of ZFN-mediated transgenesis using different techniques...
March 2016: Molecular Therapy: the Journal of the American Society of Gene Therapy
Martin L Katz, Luis Tecedor, Yonghong Chen, Baye G Williamson, Elena Lysenko, Fred A Wininger, Whitney M Young, Gayle C Johnson, Rebecca E H Whiting, Joan R Coates, Beverly L Davidson
The most common form of the childhood neurodegenerative disease late infantile neuronal ceroid lipofuscinosis (also called Batten disease) is caused by deficiency of the soluble lysosomal enzyme tripeptidyl peptidase 1 (TPP1) resulting from mutations in the TPP1 gene. We tested whether TPP1 gene transfer to the ependyma, the epithelial lining of the brain ventricular system, in TPP1-deficient dogs would be therapeutically beneficial. A one-time administration of recombinant adeno-associated virus (rAAV) expressing canine TPP1 (rAAV...
November 11, 2015: Science Translational Medicine
Andrei A Kramerov, Alexander V Ljubimov
Nonproliferative diabetic retinopathy (DR) is characterized by multiple degenerative changes that could be potentially corrected by stem cell therapies. Most studies so far have attempted to alleviate typical abnormalities of early retinopathy, including vascular hyperpermeability, capillary closure and pericyte dropout. Success was reported with adult stem cells (vascular progenitors or adipose stem cells), as well as induced pluripotent stem cells from cord blood. The cells were able to associate with damaged vessels in both pericyte and endothelial lining positions in models of DR and ischemia-reperfusion...
March 2016: Experimental Biology and Medicine
Leonard Pek-Kiang Ang, Preeti Jain, Toan Thang Phan, Hasan Mahmud Reza
PURPOSE: To determine the effectiveness of human umbilical cord-derived mucin-expressing cord lining epithelial cells (CLEC-muc) as feeder cells in a coculture system for the cultivation of human limbal stem cells. METHODS: Human CLEC-muc were cultured in PTTe-1 medium and treated with mitomycin C to arrest their growth to make the feeder layer. Single-cell suspension of limbal cells was prepared from corneal rim collected from the Singapore Eye Bank. Limbal cells were cultured in a coculture system with CLEC-muc as well as 3T3 cells as feeder layer...
July 2015: Investigative Ophthalmology & Visual Science
Tao Li, Chunfu Zhang, Yanling Ding, Wei Zhai, Kui Liu, Fan Bu, Tao Tu, Lingxian Sun, Wei Zhu, Fangfang Zhou, Wenkai Qi, Jiabo Hu, Huabiao Chen, Xiaochun Sun
Mesenchymal stem cells (MSCs) are known to migrate to tumor tissues and to play an important role in cancer progression. However, the effects of MSCs on tumor progression remain controversial. The purpose of the present study was to detect the effects of human umbilical cord-derived MSCs (hUC‑MSCs) on the human breast cancer cell lines MDA-MB‑231 and MCF-7 in vitro and the underlying mechanisms. MSCs were isolated and identified from umbilical cord tissues. MDA-MB‑231 and MCF-7 cells were treated with conditioned medium (CM) from 10 and 20% umbilical cord MSCs (UC-MSCs), and the resulting changes in proliferation and migration were investigated...
September 2015: Oncology Reports
Satoshi Maruyama, Manabu Yamazaki, Tatsuya Abé, Hamzah Babkair, Jun Cheng, Takashi Saku
OBJECTIVE: The aim of this study was to characterize the histologic and immunohistochemical profiles of paradental cyst-lining epithelia to clarify its histopathogenesis. STUDY DESIGN: Ten surgical specimens of paradental cysts were examined for clinical profiles and to determine the histopathologic characteristics of the lining epithelia. Immunohistochemical profiles for keratin (K) subtypes, as well as for perlecan, UEA-I lectin binding, and proliferating cell nuclear antigen (PCNA), were determined and compared...
August 2015: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
V A Ferretti, R Canzoneri, C G Barbeito, M V Croce, M C Abba, E Lacunza
Over the last few years rhomboid genes have gained interest because of its association with cancer and neurodegenerative diseases. In previous studies, we demonstrated that human RHBDD2 is over-expressed in the advanced stages of breast and colorectal cancers, suggesting a favorable role in cell proliferation. So far little is known about the expression of RHBDD2 in other tissues and other species, and because of similarities between cancer and embryonic cells, this study focused on the evaluation of Rhbdd2 expression in embryonic and adult rat tissues...
September 2015: Acta Histochemica
Yaozhang Dai, Yong Liu, Xiufen Tian, Xin Zhang
OBJECTIVE: To explore the RCP protein expression and its clinicopathological significance in laryngeal squamous cell carcinoma (LSCC). METHODS: RCP protein expression in human head and neck squamous cell carcinoma cell lines (NP-69, Tu686, Tu212, M2 and M4) was analyzed by Western blotting. Besides, its expression in 87 cases of LSCC, 18 cases of adjacent epithelial mucosa and 16 cases of vocal cord leukoplakia was detected by immunohistochemistry, and their correlation with clinicopathological parameters and patients' outcome was analyzed...
February 2015: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
Kanwardeep Singh Kwatra, Preethi A M Paul, Nalini Calton, Shubhra George
It is extremely rare to find mullerian choristomas in association with spinal dysraphism, with <10 cases published in English literature. We report a case of heterotopic uterus and fallopian tube-like tissue within a lumbar subcutaneous lipoma associated with spina bifida and tethered cord. A 21-year-old lady presented with lumbar swelling since birth and dull pain in the lower back. Magnetic resonance imaging showed spina bifida at level L3 and L4, tethering of the cord and a subcutaneous lipomatous swelling...
April 2015: Indian Journal of Pathology & Microbiology
V P Bykova, E A Kochesokova, G F Ivanchenko, I D Rotova
OBJECTIVE: To investigate the morphogenesis of vocal fold polyps and Reinke's edema on the basis of clinical and morphological analyses of the histological and immunohistochemical data characterizing the state of the local microcirculatory bed and the mechanisms of its permeability impairment. SUBJECTS AND METHODS: Polyps of the vocal folds and their mucosal tissue samples in Reinke's edema mucosa, which had been obtained after microsurgical treatment of 31 patients (13 men and 18 women) aged 23 to 75 years, were studied using a wide panel of peroxidase-labeled monoclonal and polyclonal antibodies (DAB chromogen), including T and B cell differentiation markers, Toll-like receptors (TLR2, TLR4, and TLR9), the costimulatory molecule CD80 (B7- 1), and markers for angiogenesis (CD34), vascular and tissue permeability (matrix metalloproteinases (MMP-1 and MMP-9)), and vascular cell adhesion molecule-1 (VCAM-1)...
January 2015: Arkhiv Patologii
Liliana Palencia, Amritava Das, Sean P Palecek, Susan L Thibeault, Ciara Leydon
BACKGROUND: The goal of vocal fold wound healing is the reconstitution of functional tissue, including a structurally and functionally intact epithelium. Mechanisms underlying reepithelialization in vocal folds are not known, although it is suspected that healing involves the interplay between several growth factors. We used a three-dimensional human embryonic stem cell-derived model of vocal fold mucosa to examine the effects of one growth factor, exogenous epidermal growth factor (EGF), on wound healing...
July 2015: Journal of Surgical Research
A K Gulevsky, N N Moisieieva, O L Gorina, J S Akhatova, A A Lavrik, A V Trifonova
The influence of a low-molecular fraction (below 5 kDa) from the cattle cord blood (CBF) on functional activity of phagocytes, human embryonic fibroblasts, mesenchymal stromal cells and BHK-21 clone 13/04 and PK-15 cells was studied. The low-molecular fraction added to culture medium increases the growth rate of cell cultures. The incubation of leukoconcentrate in the CBF-containing medium results in an increase in phagocytic indices ofneutrophils in the presence of a phagocytosis inhibitor--sodium iodoacetate, leading to a significant increase in intracellular glucose content and alkaline phosphatase activity as compared to the control and the reference drug Actovegin®...
November 2014: Ukrainian Biochemical Journal
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