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https://www.readbyqxmd.com/read/28731936/case-series-keratolimbal-allograft-as-a-patch-graft-for-glaucoma-drainage-devices
#1
Sarah F Ahmed, Mason Schmutz, Sameh Mosaed
PURPOSE: Tube exposure remains one of the most common complications after glaucoma drainage device (GDD) implantation, despite various types of patch grafts available today. We present a 4 patient case series following the effectivity of the keratolimbal allograft (KLAL) as a patch graft for cases of tube exposure. Given its inherent population of stem cells, our hypothesis was that this highly replicative, biological tissue would provide an adequate means of glaucoma tube coverage. The subset of patients chosen for the KLAL patch graft all had a history of abnormally scarred conjunctiva or thin sclera...
July 20, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28714578/efficacy-and-initial-safety-profile-of-cxcl12-treatment-in-a-rodent-model-of-urinary-sphincter-deficiency
#2
J Koudy Williams, Ashley Dean, Shannon Lankford, Karl-Erik Andersson
Disappointing results of skeletal muscle precursor cell (skMPC) therapy for women with intrinsic urinary sphincter deficiency (ISD) associated urinary incontinence has increased interest in alternative sphincter regenerative approaches. This study was to measure the safety and efficacy of the cell homing chemokine CXCL12 versus skMPCs in a rat model of ISD. Thirty-six adult female Sprague Dawley rats were divided into 6 treatment (Tx) conditions: (a) no ISD/noTx [Control]; (b) ISD/noTx; (c) ISD + skMPCs; (d) ISD + 3...
July 17, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28713741/reconstruction-of-drug-induced-cleft-palate-using-bone-marrow-mesenchymal-stem-cell-in-rodents
#3
Julie Christy Amalraj, Manasa Gangothri, Hari Babu
BACKGROUND: Triamcinolone acetonide (TAC) (Kenacort*) is a commonly used synthetic glucocorticoid in today's medical practice. The drug is also a potential agent in inducing cleft palates in rats. This drug has been used to induce cleft palate in the fetus of the pregnant rats to bring out a suitable animal model for human cleft lip and palate. The drug was given intraperitoneally to induce congenital cleft palate in pregnant mother rats. AIM: The aim of this study is to induce congenital cleft palate in pregnant Wister albino rats and reconstruct the defect with bone marrow mesenchymal stem cells (BMSCs) isolated from the same species along with PLGA (poly lactic co glycolic acid) scaffold...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28713641/higher-serum-alanine-transaminase-levels-in-male-urokinase-type-plasminogen-activator-transgenic-mice-are-associated-with-improved-engraftment-of-hepatocytes-but-not-liver-sinusoidal-endothelial-cells
#4
Marina E Fomin, Ashley I Beyer, Jean Publicover, Kai Lu, Sonia Bakkour, Graham Simmons, Marcus O Muench
The effects of sex on the degree of liver damage and human cell engraftment were investigated in immunodeficient urokinase-type plasminogen activator-transgenic (uPA-NOG) mice. Liver damage, measured by serum alanine transaminase (ALT) levels, was compared in male and female uPA-NOG mice of different ages. Male mice had significantly higher ALT levels than females with a median of 334 versus 158 U/L in transgenic homozygous mice, respectively. Mice were transplanted with human adult hepatocytes or fetal liver cells and analyzed for any correlation of engraftment of hepatocytes, liver sinusoidal endothelial cells (LSECs), and hematopoietic cells with the degree of liver damage...
2017: Cell Medicine
https://www.readbyqxmd.com/read/28711606/ovarian-aromatase-loss-of-function-mutant-medaka-undergo-ovary-degeneration-and-partial-female-to-male-sex-reversal-after-puberty
#5
Masatoshi Nakamoto, Yasushi Shibata, Kaoru Ohno, Takeshi Usami, Yasuhiro Kamei, Yoshihito Taniguchi, Takeshi Todo, Takashi Sakamoto, Graham Young, Penny Swanson, Kiyoshi Naruse, Yoshitaka Nagahama
Although estrogens have been generally considered to play a critical role in ovarian differentiation in non-mammalian vertebrates, the specific functions of estrogens during ovarian differentiation remain unclear. We isolated two mutants with premature stops in the ovarian aromatase (cyp19a1) gene from an N-ethyl-N-nitrosourea-based gene-driven mutagenesis library of the medaka, Oryzias latipes. In XX mutants, gonads first differentiated into normal ovaries containing many ovarian follicles that failed to accumulate yolk...
July 12, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28710685/pericytes-extend-survival-of-als-sod1-mice-and-induce-the-expression-of-antioxidant-enzymes-in-the-murine-model-and-in-ipscs-derived-neuronal-cells-from-an-als-patient
#6
Giuliana Castello Coatti, Miriam Frangini, Marcos C Valadares, Juliana Plat Gomes, Natalia O Lima, Natale Cavaçana, Amanda F Assoni, Mayra V Pelatti, Alexander Birbrair, Antonio Carlos Pedroso de Lima, Julio M Singer, Francisco Marcelo M Rocha, Giovani Loiola Da Silva, Mario Sergio Mantovani, Lucia Inês Macedo-Souza, Merari F R Ferrari, Mayana Zatz
Amyotrophic Lateral Sclerosis (ALS) is one of the most common adult-onset motor neuron disease causing a progressive, rapid and irreversible degeneration of motor neurons in the cortex, brain stem and spinal cord. No effective treatment is available and cell therapy clinical trials are currently being tested in ALS affected patients. It is well known that in ALS patients, approximately 50% of pericytes from the spinal cord barrier are lost. In the central nervous system, pericytes act in the formation and maintenance of the blood-brain barrier, a natural defense that slows the progression of symptoms in neurodegenerative diseases...
July 14, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28709866/mesenchymal-stem-cell-transplantation-carried-in-svvyglr-modified-self-assembling-peptide-promoted-cardiac-repair-and-angiogenesis-after-myocardial-infarction
#7
Xi-Ren Gao, Hai-Jun Xu, Li-Fang Wang, Chong-Bin Liu, Feng Yu
The efficiency of stem cell therapy for myocardial infarction (MI) was very low due to the hostile microenvironment and poor blood perfusion. In this study, we designed a new self-assembling peptide through adding angiogenic polypeptide SVVYGLR to the carboxyl terminal of RADA16, and evaluated the therapeutic potential of mesenchymal stem cell (MSC) transplantation carried in this designer self-assembling peptide (DSP) on MI. After the model of cell ischemia and hypoxia was established in vitro, cytoprotective effect of DSP on MSC was detected by AO/EB staining...
July 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28704392/redifferentiation-of-aged-human-articular-chondrocytes-by-combining-bone-morphogenetic-protein-2-and-melanoma-inhibitory-activity-protein-in-3d-culture
#8
Stephan Payr, Brigitte Tichy, Clemens Atteneder, Marc Michel, Thomas Tiefenboeck, Nikolaus Lang, Sylvia Nuernberger, Stefan Hajdu, Elizabeth Rosado-Balmayor, Stefan Marlovits, Christian Albrecht
Melanoma inhibitory activity (MIA) affects the differentiation to hyaline cartilage and can inhibit the osteogenic potential of bone morphogenetic protein (BMP)-2 in mesenchymal stem cells (MSC). The aim of this study was to investigate if MIA also inhibits the osteogenic potential of BMP-2 in human articular chondrocytes during redifferentiation, which may lead to a higher grade of differentiation without calcification. HAC of four female patients (mean age: 73.75 ±6.98) were seeded into 3D culture for 28 days; after adding the recombinant proteins, four groups were formed (Control, BMP-2, MIA, BMP-2+MIA)...
2017: PloS One
https://www.readbyqxmd.com/read/28698572/the-effect-of-calorie-restriction-on-mouse-skeletal-muscle-is-sex-strain-and-time-dependent
#9
Luisa Boldrin, Jacob A Ross, Charlotte Whitmore, Bruno Doreste, Charlotte Beaver, Ayad Eddaoudi, Daniel J Pearce, Jennifer E Morgan
Loss of skeletal muscle mass and function occurs with increasing age. Calorie restriction (CR) increases the lifespan of C57Bl/6 mice, but not in the shorter-lived DBA/2 strain. There is some evidence that calorie restriction reduces or delays many of the age-related defects that occur in rodent skeletal muscle. We therefore investigated the effect of short (2.5 month) and longer term (8.5 and 18.5 months) CR on skeletal muscle in male and female C57Bl/6 and DBA/2 mice. We found that short-term CR increased the satellite cell number and collagen VI content of muscle, but resulted in a delayed regenerative response to injury...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28697789/improvement-in-asymmetric-dimethylarginine-and-oxidative-stress-in-patients-with-limb-salvage-after-autologous-mononuclear-stem-cell-application-for-critical-limb-ischemia
#10
Juraj Madaric, Martina Valachovicova, Ludovit Paulis, Jana Pribojova, Renata Mateova, Katarina Sebekova, Luba Postulkova, Terezia Madaricova, Maria Bucova, Martin Mistrik, Ivan Vulev
BACKGROUND: Asymmetric dimethylarginine (ADMA), an endogenous inhibitor of nitric oxide synthase, acts as an inhibitor of angiogenesis and is associated with an increased risk of cardiovascular mortality. Administration of stem cells may affect endogenous mechanisms that regulate ADMA production and metabolism. The aim of the present study was to analyze ADMA concentration and changes in oxidative stress in patients with advanced critical limb ischemia (CLI) after bone marrow-derived mononuclear cell (BM-MNC) therapy...
July 12, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28697219/the-role-of-a-natural-mollusk-egg-derived-ingredient-in-facial-appearance
#11
Zoe Diana Draelos
<p>New cosmeceutical ingredients that improve skin appearance are of interest to the dermatologist. Cryptomphalus aspersa is a snail raised on farms in Spain for its mucinous secretions and eggs. These natural products have been demonstrated in vitro to trigger mesenchymal stem cell differentiation, promote dermal fibroblast and keratinocyte migration, prevent keratinocyte aging, prevent oxidative damage, stimulate the extracellular matrix, and regulate MMPs. This 12-week study enrolled 40 male and female subjects age 40-70 years of Fitzpatrick skin types I-IV with moderate to severe facial aging and Rao-Goldman scores of 4-5 who applied an eye and face anti-aging cream twice daily containing a mollusk egg extract...
July 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28694085/baseline-characteristics-predicting-very-good-outcome-of-allogeneic-hematopoietic-cell-transplantation-in-young-patients-with-high-cytogenetic-risk-chronic-lymphocytic-leukemia%C3%A2-a-retrospective-analysis-from-the-chronic-malignancies-working-party-of-the-ebmt
#12
Michel van Gelder, Dimitris Ziagkos, Liesbeth de Wreede, Anja van Biezen, Peter Dreger, Martin Gramatzki, Matthias Stelljes, Niels Smedegaard Andersen, Nicolaas Schaap, Antonin Vitek, Dietrich Beelen, Vesa Lindström, Jürgen Finke, Jacob Passweg, Matthias Eder, Maciej Machaczka, Julio Delgado, William Krüger, Luděk Raida, Gerard Socié, Pavel Jindra, Boris Afanasyev, Eva Wagner, Yves Chalandon, Anja Henseler, Stefan Schoenland, Nicolaus Kröger, Johannes Schetelig
BACKGROUND: Patients with genetically high-risk relapsed/refractory chronic lymphocytic leukemia have shorter median progression-free survival (PFS) with kinase- and BCL2-inhibitors (KI, BCL2i). Allogeneic hematopoietic stem cell transplantation (alloHCT) may result in sustained PFS, especially in younger patients because of its age-dependent non-relapse mortality (NRM) risk, but outcome data are lacking for this population. PATIENTS AND METHODS: Risk factors for 2-year NRM and 8-year PFS were identified in patients < 50 years in an updated European Society for Blood and Marrow Transplantation registry cohort (n = 197; median follow-up, 90...
June 17, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28692038/par-terra-directs-homologous-sex-chromosome-pairing
#13
Hsueh-Ping Chu, John E Froberg, Barry Kesner, Hyun Jung Oh, Fei Ji, Ruslan Sadreyev, Stefan F Pinter, Jeannie T Lee
In mammals, homologous chromosomes rarely pair outside meiosis. One exception is the X chromosome, which transiently pairs during X-chromosome inactivation (XCI). How two chromosomes find each other in 3D space is not known. Here, we reveal a required interaction between the X-inactivation center (Xic) and the telomere in mouse embryonic stem (ES) cells. The subtelomeric, pseudoautosomal regions (PARs) of the two sex chromosomes (X and Y) also undergo pairing in both female and male cells. PARs transcribe a class of telomeric RNA, dubbed PAR-TERRA, which accounts for a vast majority of all TERRA transcripts...
July 10, 2017: Nature Structural & Molecular Biology
https://www.readbyqxmd.com/read/28691729/in-vitro-differentiation-of-primordial-germ-cells-and-oocyte-like-cells-from-stem-cells
#14
REVIEW
José J N Costa, Glaucinete B Souza, Maria A A Soares, Regislane P Ribeiro, Robert van den Hurk, José R V Silva
Infertility is the result of failure due to an organic disorder of the reproductive organs, especially their gametes. Recently, much progress has been made on generating germ cells, including oocytes, from various types of stem cells. This review focuses on advances in female germ cell differentiation from different kinds of stem cells, with emphasis on embryonic stem cells, adult stem cells, and induced pluripotent stem cells. The advantages and disadvantages of the derivation of female germ cells from several types of stem cells are also highlighted, as well as the ability of stem cells to generate mature and functional female gametes...
July 10, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28691222/the-morphology-of-the-male-reproductive-system-spermatogenesis-and-the-spermatozoon-of-daphnia-magna-crustacea-branchiopoda
#15
Maggie Wuerz, Erwin Huebner, Judith Huebner
This study analyses the histological and cellular morphology of the testis and sperm development in the male Daphnia magna Straus 1820. Due to the rarity of males and predominately parthenogenetic lifecycle of Daphnia, there has been limited detailed information on males in contrast to the well-studied female. Using light and electron microscopy approaches, we describe the morphology of the testis during the progression from an immature to mature testis. The testis has an encasing muscular mesh sheath outside the basal lamina, beneath which is a thin somatic epithelial cell layer...
July 10, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28687443/ganglioglioma-of-brain-stem-and-cervicomedullary-junction-a-50years-review-of-literature
#16
REVIEW
M Burhan Janjua, Iryna Ivasyk, David J Pisapia, Mark M Souweidane
Gangliogliomas are rare low-grade brain tumors composed of both neoplastic glial and neuronal cell elements. The treatment modalities are relatively different in this location and hence factors affecting outcome are poorly understood. We identified 142 brain stem GG patients across 46 studies. The average age was 11.4years with significant difference b/w males and females under the age of 20 (p=0.001). 100% of tumors in the CMJ while, 72% of type I and 86% of type II tumors demonstrated contrast enhancement...
July 4, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28681933/effect-of-low-level-laser-therapy-and-oxytocin-on-osteoporotic-bone-marrow-derived-mesenchymal-stem-cells
#17
Somaye Fallahnezhad, Abbas Piryaie, Hasan Darbandi, Abdollah Amini, Seyed Kamran Ghorishi, Reza Jalalifirouzkouhi, Mohammad Bayat
Postmenopausal osteoporosis (OP) is a major concern for public health. Low-level laser therapy (LLLT) has a positive effect on the health of bone marrow mesenchymal stem cells (BMMSCs). The purpose of this study is to evaluate the influence of LLLT and oxytocin (OT) incubation-individually and in combination-on osteoporotic BMMSCs in ovariectomized rats. Twelve female rats were randomized into two groups to undergo either a sham surgery (sham group) or ovariectomy-induced osteoporosis OP (OVX group). MSCs harvested from the BM of healthy and OVX rats underwent culture expansion...
July 6, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28681373/the-role-of-tumor-associated-macrophage-in-breast-cancer-biology
#18
REVIEW
Junjeong Choi, Jones Gyamfi, Haerin Jang, Ja Seung Koo
Breast cancer is the most commonly diagnosed malignant tumor in women worldwide and contributes significantly as the primary cause of female cancer related mortality. Hence, research is focused on discovering new and effective treatment targets. The breast tumor microenvironment (TME) comprising of recruited host stromal cells and tumor cells, has recently emerged as an important player in tumor progression, with the potential for future treatment. The TME comprises immune system elements (such as macrophages and lymphocytes), cells composing blood vessel, fibroblast, myofibroblast, mesenchymal stem cells, adipocytes and extracellular matrix (ECM)...
July 6, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28679969/incidence-of-spontaneous-lymphomas-in-non-experimental-nod-shi-scid-il-2r%C3%AE-null-nog-mice
#19
Masahiko Yasuda, Tomoyuki Ogura, Takayuki Goto, Mika Yagoto, Yoko Kamai, Chie Shimomura, Nobuhito Hayashimoto, Yukito Kiyokawa, Hideki Shinohara, Riichi Takahashi, Kenji Kawai
Severely immunodeficient NOD/Shi-scid, IL-2Rγ(null) (NOG) mice provide an in vivo model for human cell/tissue transplantation studies. NOG mice were established by combining interleukin-2 receptor-γ chain knockout mice and NOD/Shi-scid mice. They exhibit a high incidence of thymic lymphomas and immunoglobulin (Ig) leakiness. In this study, we assessed the incidence of malignant lymphomas and the occurrence of leakiness in 2,184 non-experimental NOG retired breeder mice aged 16-40 weeks. We established that the total incidence of lymphomas was only 0...
July 6, 2017: Experimental Animals
https://www.readbyqxmd.com/read/28678378/successful-treatment-of-passive-fecal-incontinence-in-an-animal-model-using-engineered-biosphincters-a-3-month-follow-up-study
#20
Jaime L Bohl, Elie Zakhem, Khalil N Bitar
Fecal incontinence (FI) is the involuntary passage of fecal material. Current treatments have limited successful outcomes. The objective of this study was to develop a large animal model of passive FI and to demonstrate sustained restoration of fecal continence using anorectal manometry in this model after implantation of engineered autologous internal anal sphincter (IAS) biosphincters. Twenty female rabbits were used in this study. The animals were divided into three groups: (a) Non-treated group: Rabbits underwent IAS injury by hemi-sphincterectomy without treatment...
July 5, 2017: Stem Cells Translational Medicine
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