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https://www.readbyqxmd.com/read/29458087/ngf-fak-signal-pathway-is-implicated-in-angiogenesis-after-acute-cerebral-ischemia-in-rats
#1
Hai-Ting Zhao, Yu-Hu Zhang, Ying-Hui Zhang, Yue Shen, Yi-Dan Zhang, Fang-Fang Bi, Bo Xiao, Hao Zhang, Wen Ye, Hong-Hai Zhang, Yi-Wei Liao
Neurogenesis in the cerebral infarction after an ischemic event is important to the rehabilitation of patients. However, the mechanism of angiogenesis around cerebral ischemia is not clear. Our study designed to test whether the nerve growth factor (NGF)-P-focal adhesion kinase (FAK) signaling pathway for associations with angiogenesis plays a key role in post-acute cerebral ischemia of rats. Firstly, we implanted the Matrigel, a carrier of basement membrane matrix, into the abdominal skin of rats to identify the relevant components of the NGF-P-FAK signaling pathway related to angiogenesis...
February 16, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29457021/difficult-renal-pathological-classification-in-a-case-of-pediatric-nephrotic-syndrome
#2
Hiroshi Yamaguchi, Atsutoshi Shiratori, Taku Nakagawa, Kyoko Kanda, Shigeo Hara, Norishige Yoshikawa, Ryojiro Tanaka
The underlying histopathology is very important in determining patient management, as the histopathology usually has direct repercussions on the treatment response and clinical course. However, the impact of the method used to assess renal biopsies, i.e., light microscopy (LM), immunofluorescence (IF), and electron microscopy (EM), on the occurrence of a difficult biopsy classification in the native kidneys of pediatric nephrotic patients is unknown. A 12-month-old Japanese boy was diagnosed with nephrotic syndrome (NS); he was administered prednisolone (60 mg/m2 /day), and a continuous albumin infusion was started...
September 2017: Case Reports in Nephrology and Dialysis
https://www.readbyqxmd.com/read/29456224/alport-s-syndrome-with-focal-segmental-glomerulosclerosis-lesion-pattern-to-recognize
#3
Afnan A Alsahli, Sara I Alshahwan, Amal O Alotaibi, Khaled O Alsaad, Nourah Aloudah, Mahfooz Farooqui, Abdullah A Al Sayyari
The association between Alport's syndrome (AS) and focal segmental glomerulosclerosis (FSGS) in the same patient is complex and rarely reported. We report a case of a 42-year-old male presenting with proteinuria, microscopic hematuria, elevated serum creatinine and hypertension with unremarkable physical examination apart from obesity. The renal biopsy showed well-established FSGS pattern of injury with mild interstitial fibrosis and tubular atrophy, while the electron microscopic examination demonstrated glomerular basement membranes (GBM) changes compatible with AS...
January 2018: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/29456135/pericyte-alk5-timp3-axis-contributes-to-endothelial-morphogenesis-in-the-developing-brain
#4
Jui M Dave, Teodelinda Mirabella, Scott D Weatherbee, Daniel M Greif
The murine embryonic blood-brain barrier (BBB) consists of endothelial cells (ECs), pericytes (PCs), and basement membrane. Although PCs are critical for inducing vascular stability, signaling pathways in PCs that regulate EC morphogenesis during BBB development remain unexplored. Herein, we find that murine embryos lacking the transforming growth factor β (TGF-β) receptor activin receptor-like kinase 5 (Alk5) in brain PCs (mutants) develop gross germinal matrix hemorrhage-intraventricular hemorrhage (GMH-IVH)...
February 8, 2018: Developmental Cell
https://www.readbyqxmd.com/read/29455733/taxus-chinensis-ameliorates-diabetic-nephropathy-through-down-regulating-tgf-%C3%AE-1-smad-pathway
#5
Hong-Bo Weng, Wen-Ke Han, Yan-Wen Xiong, Zhou-Hui Jin, Zhen Lan, Cheng Liu, Xue-Mei Zhang, Wen Peng
Diabetic nephropathy (DN) is one of the common microvascular complications of diabetes mellitus. Renal fibrosis is closely related to the deterioration of renal function. The present study aimed to investigate protective effect of Taxus chinensis on high-fat diet/streptozotocin-induced DN in rats and explore the underlying mechanism of action. The rat DN model was established via feeding high fat diet for 4 weeks and subsequently injecting streptozotocin (30 mg·kg-1 body weight) intraperitoneally. The rats with blood glucose levels higher than 16...
February 2018: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/29455418/preoperative-chemotherapy-with-docetaxel-cisplatin-and-5-fluorouracil-for-locally-advanced-esophageal-carcinosarcoma-a-case-report-and-review-of-the-literature
#6
Tomoko Yoshimoto, Shinichiro Kobayashi, Kengo Kanetaka, Kazuma Kobayashi, Yasuhiro Nagata, Michi Morita, Yuriko Isagawa, Naoe Kinoshita, Mitsuhisa Takatsuki, Susumu Eguchi
BACKGROUND: Esophageal carcinosarcoma is a relatively rare malignant neoplasm composed of both epithelial carcinomatous and mesenchymal sarcomatous elements. There is no recommended clinical treatment for esophageal carcinosarcoma because of the rarity of the disease. This report describes a case of esophageal carcinosarcoma that was effectively treated with docetaxel, cisplatin, and 5-fluorouracil as preoperative chemotherapy. CASE PRESENTATION: A 73-year-old man had a chief complaint of dysphagia with epigastric pain...
February 17, 2018: Surgical Case Reports
https://www.readbyqxmd.com/read/29453850/the-role-of-the-immune-system-in-kidney-disease
#7
REVIEW
Josefine Tecklenborg, David Clayton, Stefan Siebert, Shana M Coley
The immune system and the kidneys are closely linked. In health the kidneys contribute to immune homeostasis, while components of the immune system mediate many acute forms of renal disease and play a central role in progression of chronic kidney disease. A dysregulated immune system can have either direct or indirect renal effects. Direct immune-mediated kidney diseases are usually a consequence of autoantibodies directed against a constituent renal antigen, such as collagen IV in anti-glomerular basement membrane disease...
February 17, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29453576/monitoring-the-integrity-of-the-blood-testis-barrier-btb-an-in-vivo-assay
#8
Haiqi Chen, Wing-Yee Lui, Dolores D Mruk, Xiang Xiao, Renshan Ge, Qingquan Lian, Will M Lee, Bruno Silvestrini, C Yan Cheng
The blood-testis barrier is a unique ultrastructure in the mammalian testis, located near the basement membrane of the seminiferous tubule that segregates the seminiferous epithelium into the basal and the adluminal (apical) compartment. Besides restricting paracellular and transcellular passage of biomolecules (e.g., paracrine factors, hormones), water, electrolytes, and other substances including toxicants and/or drugs to enter the adluminal compartment of the epithelium, the BTB is an important ultrastructure that supports spermatogenesis...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29453284/structural-and-compositional-diversity-of-fibrillin-microfibrils-in-human-tissues
#9
Alexander Eckersley, Kieran T Mellody, Suzanne M Pilkington, Christopher Em Griffiths, Rachel E B Watson, Ronan O'Cualain, Clair Baldock, David Knight, Michael J Sherratt
Elastic fibres comprising fibrillin microfibrils and elastin are present in many tissues, including the skin, lung, and arteries where they confer elasticity and resilience. Although fibrillin microfibrils play distinct and tissue-specific functional roles, it is unclear whether their ultrastructure and composition differ between elastin-rich (skin) and elastin-poor (ciliary body and zonule) organs or after in vitro synthesis by cultured cells. Here, we used atomic force microscopy, which revealed that the bead morphology of fibrillin microfibrils isolated from the human eye differs from those isolated from the skin...
February 16, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29452609/screening-drugs-for-kidney-disease-targeting-the-podocyte
#10
Joshua S Bryer, Katalin Susztak
Podocytes cover the kidney glomerular basement membrane and present the final barrier in the renal filtration system. Podocyte loss, observed in most kidney diseases, correlates with kidney function decline. In this issue of Cell Chemical Biology, Seiber et al. (2018), using a high-throughput chemical screen, identified the compound CDG-0876, which improved podocyte survival.
February 15, 2018: Cell Chemical Biology
https://www.readbyqxmd.com/read/29447641/flame-figures-in-linear-iga-bullous-dermatosis-a-novel-histopathologic-finding
#11
E Fulton, F Jan, M J Zimarowski
BACKGROUND: Linear IgA bullous dermatosis (LABD) is an autoimmune subepidermal blistering disease usually with a neutrophil rich inflammatory infiltrate, and characterized by linear IgA deposition at the basement membrane zone (BMZ), and neutrophil predominant dermal inflammation. We report a case of LABD with numerous eosinophils and flame figure formation, a unique histopathologic finding not previously reported. A 69-year-old woman presented with a rapidly progressive, intensely pruritic rash over forearms, breasts, axillae, hips, and thighs...
November 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/29447635/sublamina-densa-type-linear-iga-bullous-dermatosis-with-iga-autoantibodies-specific-for-type-vii-collagen-a-case-report-and-clinicopathological-review-of-32-cases
#12
Natsuko Utsunomiya, Takenao Chino, Noritaka Oyama, Akira Utsunomiya, Yuka Yamaguchi, Wataru Takashima, Atsushi Tokuriki, Minoru Hasegawa
Linear IgA bullous dermatosis (LABD) is a rare autoimmune bullous disorder characterized by linear deposits of IgA at the basement membrane zone(BMZ) and/or by circulating IgA anti-BMZ antibodies. Comparing with other immuno-bullous diseases, LABD represents a heterogeneous disease entitywith diversity of pathogenic IgA autoantibodies to different hemidesmosomal antigens and an association with malignancies and occasional drug use. We herein present an 82-year-old Japanese man with LABD, whose indirect immunofluorescence using 1M NaCl-split skin showed positive staining for IgA at the dermal side alone...
November 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/29443032/kinetic-analysis-of-vasculogenesis-quantifies-dynamics-of-vasculogenesis-and-angiogenesis-in-vitro
#13
Kaela M Varberg, Seth Winfree, Kenneth W Dunn, Laura S Haneline
Vasculogenesis is a complex process by which endothelial stem and progenitor cells undergo de novo vessel formation. Quantitative assessment of vasculogenesis has become a central readout of endothelial progenitor cell functionality, and therefore, several attempts have been made to improve both in vitro and in vivo vasculogenesis models. However, standard methods are limited in scope, with static measurements failing to capture many aspects of this highly dynamic process. Therefore, the goal of developing this novel protocol was to assess the kinetics of in vitro vasculogenesis in order to quantitate rates of network formation and stabilization, as well as provide insight into potential mechanisms underlying vascular dysfunction...
January 31, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29436687/laminins-in-an-in%C3%A2-vitro-anterior-lens-capsule-model-established-using-hle-b-3-cells
#14
Yu Yan, Hua Qian, Hongda Jiang, Haiyang Yu, Liyao Sun, Xi Wei, Yunduan Sun, Hongyan Ge, Haizhou Zhou, Xiaoguang Li, Takashi Hashimoto, Xianling Tang, Ping Liu
Cataracts are the most common eye disease to cause blindness in patients. The abnormal deposition of laminins (LMs) in the lens capsule and the disruption of capsular epithelium contribute to cataract development, although the mechanism by which this occurs is currently unclear. The present study aimed to reproduce HLE B‑3 basement membranes (BMs) using HLE B‑3 cells and to analyze the similarities of LM expression between HLE B‑3 BMs and human anterior lens capsule (ALC). Immunohistochemistry (IHC), ELISA, western blot analysis and immunoprecipitation (IP)‑western blot analysis were used to detect total LMs, LM trimers and 11 LM subunits in HLE B‑3 cells, HLE B‑3 BMs and human ALCs...
February 8, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29435440/basement-membrane-defects-in-genetic-kidney-diseases
#15
REVIEW
Christine Chew, Rachel Lennon
The glomerular basement membrane (GBM) is a specialized structure with a significant role in maintaining the glomerular filtration barrier. This GBM is formed from the fusion of two basement membranes during development and its function in the filtration barrier is achieved by key extracellular matrix components including type IV collagen, laminins, nidogens, and heparan sulfate proteoglycans. The characteristics of specific matrix isoforms such as laminin-521 (α5β2γ1) and the α3α4α5 chain of type IV collagen are essential for the formation of a mature GBM and the restricted tissue distribution of these isoforms makes the GBM a unique structure...
2018: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29432216/glomerulogenesis-and-the-role-of-endothelium
#16
Michio Nagata
PURPOSE OF REVIEW: Earlier works of the glomerulogenesis described morphological steps and protein expression during in-vivo and in-vitro kidney development. Recent technologies using cell-specific or conditional knock-out mice for several factors provide important knowledge about cross-talk signaling among resident cells as local events. Based on the recent advancement, this review revisits comprehensive morphological development of the glomerulus. RECENT FINDINGS: Interactions of presumptive podocyte vascular endothelial growth factor with vascular endothelial growth factor-2 on angioblasts initiate glomerular vascularization...
February 9, 2018: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/29429961/generation-of-functioning-nephrons-by-implanting-human-pluripotent-stem-cell-derived-kidney-progenitors
#17
Ioannis Bantounas, Parisa Ranjzad, Faris Tengku, Edina Silajdžić, Duncan Forster, Marie-Claude Asselin, Philip Lewis, Rachel Lennon, Antonius Plagge, Qi Wang, Adrian S Woolf, Susan J Kimber
Human pluripotent stem cells (hPSCs) hold great promise for understanding kidney development and disease. We reproducibly differentiated three genetically distinct wild-type hPSC lines to kidney precursors that underwent rudimentary morphogenesis in vitro. They expressed nephron and collecting duct lineage marker genes, several of which are mutated in human kidney disease. Lentiviral-transduced hPSCs expressing reporter genes differentiated similarly to controls in vitro. Kidney progenitors were subcutaneously implanted into immunodeficient mice...
February 7, 2018: Stem Cell Reports
https://www.readbyqxmd.com/read/29429771/gonocyte-transformation-in-a-congenitally-cryptorchid-rat-is-normal-and-may-be-similar-to-the-situation-reported-in-human-acquired-cryptorchidism
#18
Moshe Loebenstein, John Hutson, Ruili Li
BACKGROUND: In congenital undescended testis (UDT) in humans, thermal insult damages early germ cell development during mini-puberty (3-6months) causing increased risk of both cancer and infertility. In rodents however, UDT causes infertility but not cancer. In the TS rat with congenital UDT we hypothesized that early germ cell development would be normal as UDT only becomes manifest at 3-4weeks (and the germ cells only become sensitive to thermal injury) after minipuberty is complete at 1week...
January 31, 2018: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29429485/paradigm-shifts-in-understanding-equine-laminitis
#19
REVIEW
J C Patterson-Kane, N P Karikoski, C M McGowan
Laminitis, one of the most debilitating conditions of all equids, is now known to be the result of several systemic disease entities. This finding, together with other recent developments in the field of laminitis research, have provoked a rethink of our clinical and research strategies for this condition. First, laminitis is now considered to be a clinical syndrome associated with systemic disease (endocrine disease, sepsis or systemic inflammatory response syndrome, SIRS) or altered weight bearing rather than being a discrete disease entity...
January 2018: Veterinary Journal
https://www.readbyqxmd.com/read/29428186/laminin-peptide-yigsr-enhances-epidermal-development-of-skin-equivalents
#20
Young-Yoon Kim, Hailan Li, Yu Seok Song, Hyo-Soon Jeong, Hye-Young Yun, Kwang Jin Baek, Nyoun Soo Kwon, Yong Kyoo Shin, Kyoung-Chan Park, Dong-Seok Kim
Since the use of animal experimentation is restricted with regard to cosmetic materials, alternative in vitro models such as skin equivalents (SEs) are needed. Laminin is one of the major non-collagenous glycoproteins. The pentapeptide YIGSR (Tyr-Ile-Gly-Ser-Arg) is a functional motif of laminin that binds to the laminin receptor. In the present study, we examined whether YIGSR could improve the reconstruction of SEs. YIGSR has no effects on monolayer cell proliferation of CCD25-Sk fibroblasts or HaCaT keratinocytes...
February 7, 2018: Journal of Tissue Viability
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