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https://www.readbyqxmd.com/read/28109116/aminoaciduria-caused-by-fanconi-syndrome-in-a-heifer
#1
N Cesbron, L Dorso, A-L Royer, G Dervilly-Pinel, J Hervé
A case study of renal tubular dysfunction consistent with idiopathic Fanconi syndrome is reported in an 18-month-old Holstein heifer. The clinical, biochemical, and histopathological features are described. The heifer had clinical signs of growth retardation, wasting, and persistent diarrhea. Biochemical blood analysis identified hypokalemia, hyponatremia, and hypochloremia. Urinalysis identified glycosuria, proteinuria, and acidic pH. Histological examination of the kidney disclosed mild tubular necrosis with proteinaceous casts in the lumina of renal tubules...
January 21, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28108960/dual-acting-biofunctionalised-scaffolds-for-applications-in-regenerative-medicine
#2
Camilo Chaves, Chuanyu Gao, Jerome Hunckler, Moustafa Elsawy, Josette Legagneux, Gilles Renault, Alain Charles Masquelet, Achala de Mel
Off the shelf scaffolds for replacing ultra-small diameter vascular grafts are valuable for reconstruction of diseased or damaged vessels. The limitations for such grafts include optimal handling with ready availability of varied lengths of grafts, graft patency with the ability to replace the function of active cellular mechanisms and adequate mechanical properties to maintain physicochemical function. We used a well-established, solvent casting method for potential tissue replacement scaffold fabrication with incorporated bioactive molecules, which we have previously explored to confer haemocompatibility...
February 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28108282/hyperfiltration-associated-biomechanical-forces-in-glomerular-injury-and-response-potential-role-for-eicosanoids
#3
REVIEW
Mukut Sharma, Ram Sharma, Ellen T McCarthy, Virginia J Savin, Tarak Srivastava
Hyperfiltration is a well-known risk factor in progressive loss of renal function in chronic kidney disease (CKD) secondary to various diseases. A reduced number of functional nephrons due to congenital or acquired cause(s) results in hyperfiltration in the remnant kidney. Hyperfiltration-associated increase in biomechanical forces namely pressure-induced tensile stress and fluid flow-induced shear stress (FFSS) determine cellular injury and response. We believe the current treatment of CKD yields limited success because it largely attenuates pressure-induced tensile stress changes but not the effect of FFSS on podocytes...
January 17, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28107490/diagnostic-value-of-urine-tissue-inhibitor-of-metalloproteinase-2-and-insulin-like-growth-factor-binding-protein-7-for-acute-kidney-injury-a-meta-analysis
#4
Yuanyuan Su, Zhiyan Gong, Yan Wu, Yuan Tian, Xiaohui Liao
BACKGROUND: Tissue inhibitor of metalloproteinase-2 (TIMP-2) and insulin-like growth factor-binding protein-7 (IGFBP7) are both involved in renal tubular epithelial cell cycle arrest in acute kidney injury (AKI). Several recent studies showed that urine TIMP-2 times IGFBP7 ([TIMP-2]*[IGFBP7]) is a promising biomarker to predict AKI. METHODS: The aim of this meta-analysis was to assess the diagnostic value of urine [TIMP-2]*[IGFBP7] for early diagnosis of AKI. Relevant studies were retrieved from the PubMed, EMBASE, and Cochrane Library databases...
2017: PloS One
https://www.readbyqxmd.com/read/28107245/innovative-technique-for-the-placement-of-the-drainage-tube-for-microendoscopic-spinal-decompression
#5
Kentaro Mizuno, Yasuo Mikami, Hitoshi Hase, Takumi Ikeda, Masateru Nagae, Hitoshi Tonomura, Toshiharu Shirai, Hiroyoshi Fujiwara, Toshikazu Kubo
STUDY DESIGN: A technical note and retrospective study. OBJECTIVES: The objectives were to describe a new method of drainage tube placement during microendoscopic spinal decompression, and compare the positioning and fluid discharge obtained with this method and the conventional method. SUMMARY OF BACKGROUND DATA: To prevent postoperative epidural hematoma after microendoscopic decompression, a drainage tube must be placed in a suitable location...
February 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28106204/the-stabilization-of-tubular-crystals-in-mixtures-of-spherical-particles
#6
Ian Douglass, Helen Mayger, Toby Hudson, Peter Harrowell
Novel crystal structures in binary atomic mixtures arise when the attractive well is wide enough to allow double occupancy by small particles. The resulting crystals consist of ordered packings of self assembled linear structures comprised of a cylindrical tube of large particles enclosing a close packed core of small particles that corresponds to a stacking of overlapping icosahedra. We show that the stability of these structures depends on two essential features of the spherically symmetric pairwise interactions: (i) a radius ratio between 0...
January 20, 2017: Soft Matter
https://www.readbyqxmd.com/read/28106047/scale-dependent-diffusion-anisotropy-in-nanoporous-silicon
#7
Daria Kondrashova, Alexander Lauerer, Dirk Mehlhorn, Hervé Jobic, Armin Feldhoff, Matthias Thommes, Dipanjan Chakraborty, Cedric Gommes, Jovana Zecevic, Petra de Jongh, Armin Bunde, Jörg Kärger, Rustem Valiullin
Nanoporous silicon produced by electrochemical etching of highly B-doped p-type silicon wafers can be prepared with tubular pores imbedded in a silicon matrix. Such materials have found many technological applications and provide a useful model system for studying phase transitions under confinement. This paper reports a joint experimental and simulation study of diffusion in such materials, covering displacements from molecular dimensions up to tens of micrometers with carefully selected probe molecules. In addition to mass transfer through the channels, diffusion (at much smaller rates) is also found to occur in directions perpendicular to the channels, thus providing clear evidence of connectivity...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105769/renal-tubular-resistance-is-the-primary-driver-for-loop-diuretic-resistance-in-acute-heart-failure
#8
Jozine M Ter Maaten, Veena S Rao, Jennifer S Hanberg, F Perry Wilson, Lavanya Bellumkonda, Mahlet Assefa, J Sam Broughton, Julie D'Ambrosi, W H Wilson Tang, Kevin Damman, Adriaan A Voors, David H Ellison, Jeffrey M Testani
BACKGROUND: Loop diuretic resistance is a common barrier to effective decongestion in acute heart failure (AHF), and is associated with poor outcome. Specific mechanisms underlying diuretic resistance are currently unknown in contemporary AHF patients. We therefore aimed to determine the relative importance of defects in diuretic delivery vs. renal tubular response in determining diuretic response (DR) in AHF. METHODS AND RESULTS: Fifty AHF patients treated with intravenous bumetanide underwent a 6-h timed urine collection for sodium and bumetanide clearance...
January 19, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28105348/thyroid-like-low-grade-nasopharyngeal-papillary-adenocarcinoma-a-case-report
#9
Taro Horino, Osamu Ichii, Kazu Hamada-Ode, Tatsuki Matsumoto, Yoshiko Shimamura, Kosuke Inoue, Yoshio Terada
Thyroid-like low-grade nasopharyngeal papillary adenocarcinoma (TL-LGNPPA) is a rare neoplasm characterized by morphological analogy to papillary thyroid carcinoma and abnormal expression of thyroid transcription factor-1 (TTF-1). We herein report a rare case of TL-LGNPPA with a review of its clinical, morphological and immunohistochemical characteristics. The patient was a 25-year-old Japanese woman complaining of a 2-year history of fever of unknown origin. There were no remarkable physical findings and the laboratory tests, including C-reactive protein levels, were normal...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28105101/urinary-neutrophil-gelatinase-associated-lipocalin-is-an-early-predictor-of-acute-kidney-injury-in-premature-infants
#10
Ryota Kuribayashi, Hiroshi Suzumura, Toshimi Sairenchi, Yoshiyuki Watabe, Yayoi Tsuboi, George Imataka, Hidemitsu Kurosawa, Osamu Arisaka
Urinary neutrophil gelatinase-associated lipocalin (uNGAL) is produced in response to tubular epithelial injury and is a biomarker of tubulointerstitial injury. The aim of the present study was to examine whether acute kidney injury (AKI) could be predicted by measuring uNGAL in very low-birth weight (VLBW) infants. Forty VLBW infants with birthweight below 1,500 g were enrolled in the present study. uNGAL and serum creatinine (sCre) were measured daily from postnatal days 0 to 8. Infants with sCre ≥1.2 mg/dl were diagnosed with AKI...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28104922/volumetric-doppler-angle-correction-for-ultrahigh-resolution-optical-coherence-doppler-tomography
#11
Jiang You, Ang Li, Congwu Du, Yingtian Pan
Ultrahigh-resolution optical coherence Doppler tomography (μODT) demonstrates great potential for quantitative blood flow imaging owing to its large field of view and capillary resolution. However, μODT only detects the axial flow velocity and requires Doppler angle correction to retrieve the absolute velocity. Although methods for Doppler angle tracking of single or few large vessels have been reported, a method that enables angle correction of the entire 3D microvascular networks remains a challenge. Here, we present a method based on eigenvalue analysis of 3D Hessian matrix to retrieve the orientation of each tubular vessel...
January 2, 2017: Applied Physics Letters
https://www.readbyqxmd.com/read/28104821/the-urine-preservative-acetic-acid-degrades-urine-protein-implications-for-urine-biorepositories-and-the-aask-cohort-study
#12
Salem Almaani, Lee A Hebert, Brad H Rovin, Daniel J Birmingham
Patients enrolled in the African American Study of Kidney Disease and Hypertension (AASK) Cohort Study who exhibited overt proteinuria have been reported to show high nonalbumin proteinuria (NAP), which is characteristic of a tubulopathy. To determine whether African American Study of Kidney Disease and Hypertension nephropathy (AASK-N) is a tubulopathy, we obtained urine samples of 37 patients with AASK-N, with 24-hour protein-to-creatinine ratios (milligrams per milligram) ranging from 0.2 to 1.0, from the National Institute of Diabetes and Digestive Kidney Diseases repository and tested for seven markers of tubular proteinuria...
January 19, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28104301/differences-in-pathologic-features-and-graft-outcomes-in-antibody-mediated-rejection-of-renal-allografts-due-to-persistent-recurrent-versus-de-novo-donor-specific-antibodies
#13
Mark Haas, James Mirocha, Nancy L Reinsmoen, Ashley A Vo, Jua Choi, Joseph M Kahwaji, Alice Peng, Rafael Villicana, Stanley C Jordan
Antibody-mediated rejection (ABMR) of renal allografts occurs in two forms. Type 1 ABMR results from persistence and/or a rebound of preexisting donor-specific antibodies in sensitized patients and usually occurs early post-transplantation. Type 2 ABMR is associated with de novo donor-specific antibodies and usually occurs over one year post-transplantation. It is generally accepted that types 1 and 2 also differ with regard to certain pathologic features including the frequencies of C4d positivity and concurrent cell-mediated rejection...
January 16, 2017: Kidney International
https://www.readbyqxmd.com/read/28104164/clinicopathologic-impact-of-early-medullary-ray-injury-in-patients-following-kidney-transplantation
#14
T Niikura, A Kobayashi, M Kawabe, A Katsuma, T Yamakawa, H Katsumata, A Mafune, Y Nakada, I Yamamoto, Y Tanno, I Ohkido, M Okumi, H Ishida, H Yamamoto, T Yokoo, K Tanabe
BACKGROUND: Previously, we explored the histopathologic characteristics of medullary ray injury (MRI) inducing interstitial fibrosis and tubular atrophy (IF/TA) to determine its etiologies, which include calcineurin inhibitor (CNI) toxicity and urologic complications. However, we did not examine the effects of these etiologies on long-term kidney allograft prognosis, because biopsy timing differed among cases. AIM: We examined the influence of early MRI on kidney allograft prognosis using protocol biopsies taken within a 3-month time frame...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28102914/nano-koosh-balls-of-mesoporous-mno2-improved-supercapacitor-performance-through-superior-ion-transport
#15
Aasheesh Srivastava, Qysar Maqbool, Chanderpratap Singh, Priyajit Jash, Amit Paul
Manganese dioxide nanomaterials with "Koosh-ball" like morphology (MnO2-KBs) as well as worm-like nanotubes (MnO2-NWs) were obtained by employing Tween 20 as the reducing-cum-structure-directing agent, and KMnO4 as a MnO2 precursor. While the MnO2-KBs were interconnected with each other through tubular extensions, MnO2-NWs were largely disconnected. Both MnO2-KBs and MnO2-NWs had large BET surface areas (>200 m2/g), and were thermally robust upto 300 ⁰C. The electrochemical studies revealed that the highest specific capacitance (Csp) obtained for MnO2-KBs was significantly higher (272 F/g) than that of MnO2-NWs (129 F/g)...
January 19, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28102023/6-gingerol-rich-fraction-prevents-disruption-of-histomorphometry-and-marker-enzymes-of-testicular-function-in-carbendazim-treated-rats
#16
M Salihu, B O Ajayi, I A Adedara, E O Farombi
Previous investigations demonstrated that 6-gingerol-rich fraction (6-GRF) prevented testicular toxicity via inhibition of oxidative stress and endocrine disruption in CBZ-treated rats. The influence of 6-GRF on alterations in histomorphometry and marker enzymes of testicular function in CBZ-treated rats which hitherto has not been reported was investigated in this study. The animals were orally administered either CBZ (50 mg/kg) alone or in combination with 6-GRF (50, 100 and 200 mg/kg) for 14 consecutive days...
January 19, 2017: Andrologia
https://www.readbyqxmd.com/read/28101838/renal-consequences-of-preterm-birth
#17
REVIEW
Amelie Stritzke, Sumesh Thomas, Harish Amin, Christoph Fusch, Abhay Lodha
BACKGROUND: The developmental origin of health and disease concept identifies the brain, cardiovascular, liver, and kidney systems as targets of fetal adverse programming with adult consequences. As the limits of viability in premature infants have been pushed to lower gestational ages, the long-term impact of prematurity on kidneys still remains a significant burden during hospital stay and beyond. OBJECTIVES: The purpose of this study is to summarize available evidence, mechanisms, and short- and long-term renal consequences of prematurity and identify nephroprotective strategies and areas of uncertainty...
December 2017: Molecular and Cellular Pediatrics
https://www.readbyqxmd.com/read/28101448/acetylsalicylic-acid-interferes-with-embryonic-kidney-growth-and-development-by-a-prostaglandin-independent-mechanism
#18
Simon J M Welham, Alexander J Sparrow, David S Gardner, Matthew J Elmes
AIM: To evaluate the effects of the non-selective, non-steroidal anti-inflammatory drug (NSAID) acetylsalicylic acid (ASA), on ex vivo embryonic kidney growth and development. METHODS: Pairs of fetal mouse kidneys at embryonic day 12.5 were cultured ex vivo in increasing concentrations of ASA (0.04-0.4 mg/mL) for up to 7 d. One organ from each pair was grown in control media and was used as the internal control for the experimental contralateral organ. In some experiments, organs were treated with ASA for 48 h and then transferred either to control media alone or control media containing 10 μmol/L prostaglandin E2 (PGE2) for a further 5 d...
January 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28101343/effect-of-1-25-oh-2d3-on-transdifferentiation-of-rat-renal-tubular-epithelial-cells-induced-by-high-glucose
#19
Hongtao Hu, Shen Xu, Shuang Hu, Yue Gao, Hua Shui
Deficiency in vitamin D and its active metabolite is a characteristic of chronic kidney diseases (CKDs). Previous studies have reported that 1α,25-dihydroxyvitamin D3 [1,25(OH)2D3], the active form of vitamin D, can attenuate renal interstitial fibrosis. The present study aimed to explore the effect of 1,25(OH)2D3 on the transdifferentiation of NRK-52E rat renal tubular epithelial cells (RTECs) induced by high glucose, as well as the expression of vitamin D receptor (VDR) and production of angiotensin (Ang) II...
December 2016: Biomedical Reports
https://www.readbyqxmd.com/read/28101180/acute-renal-injury-induced-by-valacyclovir-hydrochloride-a-case-report
#20
Yanning Zhang, Yuxi Cong, Yan Teng
Acyclovir has been a frequently used antiviral agent in the clinical treatment of leukemia, acute encephalitis, malignant tumor and herpes simplex. The adverse effects of this drug have been widely described in clinical practice. In the present study, a case of a 35-year-old female patient diagnosed with herpes simplex, who developed acute renal injury following treatment with valacyclovir hydrochloride, is described. Kidney biopsy, light microscopy and laboratory examination were performed, and all findings revealed the signs of evident vacuolar degeneration of capillary endothelial and renal tubular epithelial cells, erythrocyte aggregation in partial renal tubule and microvilli exfoliation from epithelial cells...
December 2016: Experimental and Therapeutic Medicine
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