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https://www.readbyqxmd.com/read/29457870/effect-of-the-flow-profile-on-separation-efficiency-in-pressure-assisted-reversed-polarity-capillary-zone-electrophoresis-of-anions-simulation-and-experimental-evaluation
#1
Gabor Jarvas, Marton Szigeti, Andras Guttman
Capillary electrophoresis connected to electrospray ionization mass spectrometry is a promising combination to analyze complex biological samples. The use of sheathless electrospray ionization interfaces, such as a porous nanoelectrospray capillary emitter, requires the application of forward flow (either by pressure or electroosmosis) to maintain the electrospray process. The analysis of solute molecules with strong negative charges (e.g., aminopyrenetrisulfonate labeled glycans) necessitates a reversed-polarity capillary electrophoresis separation mode, in which case the electroosmotic flow is counter current, thus pressure assistance is necessary...
February 19, 2018: Journal of Separation Science
https://www.readbyqxmd.com/read/29457605/negative-pressure-therapy-in-the-regeneration-of-the-sciatic-nerve-using-vacuum-assisted-closure-in-a-rabbit-model
#2
Jian-Ping Wu, Zhen-Huan Jiang, Xiao-Jun Feng, Jian-Nong Jiang, Mao-Hua Cheng
BACKGROUND The aim of this study was to investigate the effects of negative pressure therapy in the regeneration of the rabbit sciatic nerve using vacuum assisted closure (VAC). MATERIAL AND METHODS Thirty male New Zealand white rabbits underwent surgical injury of the sciatic nerve, followed by negative pressure therapy using vacuum assisted closure (VAC), in three treatment groups: Group A: 0 kPa; Group B: -20 kPa; Group C: -40 kPa. At 12 weeks following surgery, the following factors were studied: motor nerve conduction velocity (MNCV); the number of myelinated nerve fibers; the wet weight of the gastrocnemius muscle...
February 19, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29457439/-antero-medial-incision-of-knee-joint-for-the-treatment-of-intercondylar-fracture-of-femur
#3
Zi-Fei Yin, Bin-Feng Sun, Xiao-Hai Yang, Qing Wang, Ping-Kang Qian, Xiao-Feng Wu, Feng Xu
OBJECTIVE: To explore the clinical effect of antero-medial incision of knee joint in treating intercondylar fracture of femur. METHODS: From September 2012 to March 2015, 24 patients with intercondylar fracture of femur were selected, including 17 males and 7 females, aged from 20 to 65 years old with an average of(38.3±9.5) years old. Among them, 12 cases were caused by traffic accident, 8 cases were caused by falling injury and 4 cases were caused by falling down...
December 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457402/-clinical-study-on-negative-pressure-closed-drainage-combined-with-vancomycin-loaded-calcium-sulfate-and-autogenous-bone-in-the-treatment-of-chronic-osteomyelitis
#4
Qiang Li, Shi-Feng Song, Wei Zhang, Guo-Zhi Wu, Li-Zhu Liu
OBJECTIVE: To study the clinical effects of negative pressure closed drainage combined with vancomycin loaded calcium sulfate and autogenous bone in the treatment of chronic osteomyelitis. METHODS: From June 2013 to December 2016, there were 35 cases of chronic osteomyelitis patients in our department, including 23 males and 12 females, ranging in age from 11 to 65 years old, with an average of 34 years old. The course of disease ranged from 8 to 46 months, with an average of 26 months...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29456694/correlation-of-expression-levels-of-caspase-3-and-bcl-2-in-alveolar-lavage-fluid-in-neonatal-respiratory-distress-syndrome-and-prognosis
#5
Yongmei Li, Lu Lin, Qingxi Wang
This study was designed to investigate the correlation between expression levels of cysteine aspartic protease-3 (caspase-3) and B-cell lymphoma gene-2 (Bcl-2) proteins in alveolar lavage fluid and the prognosis of infants with neonatal respiratory distress syndrome (RDS). A total of 150 infants with neonatal RDS undergoing alveolar lavages were divided into four groups: RDS1 (group A, n=42), RDS2 (group B, n=38), RDS3 (group C, n=38) and RDS4 (group D, n=32) according to their thoracic X-ray film grading. The oxygen uptake score, oxygenation saturation, mean airway pressure and expression levels of caspase-3 and Bcl-2 in alveolar lavage fluid of the infants in the four groups were measured and compared...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29456471/neoadjuvant-chemotherapy-exerts-selection-pressure-towards-luminal-phenotype-breast-cancer
#6
Giulia Galli, Giacomo Bregni, Stefano Cavalieri, Luca Porcu, Paolo Baili, Amash Hade, Francesca Di Salvo, Milena Sant, Roberto Agresti, Massimiliano Gennaro, Secondo Folli, Maria C De Santis, Biagio Paolini, Maria L Carcangiu, Filippo de Braud, Serena Di Cosimo
Background: Breast cancer (BC) phenotype after neoadjuvant chemotherapy (NAC) has not been extensively described and few data exist on whether expression of the primary tumor hormone receptors, HER2 and Ki-67 changes as a result of chemotherapy. Materials and Methods: We analyzed specimens from all BC patients treated with anthracycline/taxane-based NAC at our Institution between January 2010 and March 2015 (n = 325). The expression of estrogen receptor (ER), progesterone receptor (PR), HER2 and Ki-67 was determined in pre- and post-NAC specimens...
December 2017: Breast Care
https://www.readbyqxmd.com/read/29456239/a-rare-presentation-of-cryptococcal-meningitis-and-cerebellitis-in-an-asplenic-patient-seronegative-for-human-immunodeficiency-virus-hiv
#7
Hafsa Abbas, Angelica CiFuentes Kottkamp, Naeem Abbas, Richard Cindrich, Manisha Singh
BACKGROUND Cryptococcal meningitis in patients who are seronegative for the human immunodeficiency virus (HIV) and in patients who are splenectomized is rare. This report is an unusual case of meningeal and cerebellar infection due to the encapsulated yeast, Cryptococcus neoformans, which has not previously been associated with asplenia. CASE REPORT A 65-year-old HIV-negative patient with a previous splenectomy, presented with a three-day history of fever, vomiting, and headache. His symptoms progressed to generalized body aches, persistent fever, and neck stiffness...
February 19, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29456043/colistin-alone-versus-colistin-plus-meropenem-for-treatment-of-severe-infections-caused-by-carbapenem-resistant-gram-negative-bacteria-an-open-label-randomised-controlled-trial
#8
Mical Paul, George L Daikos, Emanuele Durante-Mangoni, Dafna Yahav, Yehuda Carmeli, Yael Dishon Benattar, Anna Skiada, Roberto Andini, Noa Eliakim-Raz, Amir Nutman, Oren Zusman, Anastasia Antoniadou, Pia Clara Pafundi, Amos Adler, Yaakov Dickstein, Ioannis Pavleas, Rosa Zampino, Vered Daitch, Roni Bitterman, Hiba Zayyad, Fidi Koppel, Inbar Levi, Tanya Babich, Lena E Friberg, Johan W Mouton, Ursula Theuretzbacher, Leonard Leibovici
BACKGROUND: Colistin-carbapenem combinations are synergistic in vitro against carbapenem-resistant Gram-negative bacteria. We aimed to test whether combination therapy improves clinical outcomes for adults with infections caused by carbapenem-resistant or carbapenemase-producing Gram-negative bacteria. METHODS: A randomised controlled superiority trial was done in six hospitals in Israel, Greece, and Italy. We included adults with bacteraemia, ventilator-associated pneumonia, hospital-acquired pneumonia, or urosepsis caused by carbapenem-non-susceptible Gram-negative bacteria...
February 15, 2018: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29455899/perception-of-induced-dyspnea-in-fibromyalgia-and-chronic-fatigue-syndrome
#9
Maaike Van Den Houte, Katleen Bogaerts, Ilse Van Diest, Jozef De Bie, Philippe Persoons, Lukas Van Oudenhove, Omer Van den Bergh
OBJECTIVE: Dyspnea perception is distorted in patients with medically unexplained dyspnea. The goals of this study were 1) to replicate these results in patients with fibromyalgia and/or chronic fatigue syndrome (CFS), and 2) to investigate predictors of distorted symptom perception within the patient group, with a focus on negative affectivity (NA), psychiatric comorbidity and somatic symptom severity. METHODS: Seventy-three patients diagnosed with fibromyalgia and/or CFS and 38 healthy controls (HC) completed a rebreathing paradigm, consisting of a baseline (60s of room air), a rebreathing phase (150s, gradually increasing ventilation, partial pressure of CO2 in the blood, and self-reported dyspnea), and a recovery phase (150s of room air)...
March 2018: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/29454826/diagnosis-follow-up-and-management-of-sleep-disordered-breathing-in-children-with-osteogenesis-imperfecta
#10
Antoine Léotard, Jessica Taytard, Marion Aouate, Michèle Boule, Veronique Forin, Pauline Lallemant-Dudek
OBJECTIVES: Osteogenesis imperfecta (OI) is the most common genetic skeletal disorder. Extraskeletal findings are common but an association with sleep disordered breathing (SDB) has never been described. The aim of this study was to investigate clinical features of children with OI and suspected SDB. METHODS: A retrospective study of clinical records, signs of SDB and polysomnographic recordings of children with OI was performed. We paid particular attention to symptoms that could be associated with SDB in this population - scoliosis, kyphosis, vertebral arthrodesis, chest wall deformities, basilar impression, autonomy - as well as data already known to be associated with obstructive sleep apnea such as body mass index and upper airway impairment...
February 15, 2018: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29454441/the-hemodynamic-effects-of-pregnancy-on-the-lower-extremity-venous-system
#11
REVIEW
James Taylor, Caitlin W Hicks, Jennifer A Heller
OBJECTIVE: Pregnancy has significant effects on the lower extremity venous system. Increasing venous pressure and blood volume, in combination with reduced flow rates within the deep veins, predisposes pregnant women to both primary and secondary chronic venous insufficiency (CVI). This review article highlights the specific physiologic and hemodynamic changes that occur during pregnancy and examines the nonpharmacologic, pharmacologic, and invasive interventions that are appropriate for both prophylaxis and treatment of CVI and venous thromboembolism (VTE)...
March 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29454026/adaptation-of-escherichia-coli-to-long-term-batch-culture-in-various-rich-media
#12
Lacey L Westphal, Jasmine Lau, Zuly Negro, Ivan J Moreno, Wazim Ismail Mohammed, Heewook Lee, Haixu Tang, Steven E Finkel, Karin E Kram
Experimental evolution studies have characterized the genetic strategies microbes utilize to adapt to their environments, mainly focusing on how microbes adapt to constant and/or defined environments. Using a system that incubates Escherichia coli in different complex media in long-term batch culture, we have focused on how heterogeneity and environment affects adaptive landscapes. In this system, there is no passaging of cells, and therefore genetic diversity is lost only through negative selection, without the experimentally-imposed bottlenecking common in other platforms...
February 14, 2018: Research in Microbiology
https://www.readbyqxmd.com/read/29453328/management-of-atrial-fibrillation-in-patients-with-rheumatic-mitral-stenosis
#13
REVIEW
Bernard Iung, Antoine Leenhardt, Fabrice Extramiana
Atrial fibrillation (AF) is frequent in patients with rheumatic mitral stenosis (MS). Pressure overload leads to marked structural and electrical remodelling of left atrium. The frequency of persistent AF increases with age and paroxysmal, asymptomatic, AF seems even more frequent. The occurrence of AF worsens the haemodynamic tolerance of MS and markedly increases the risk of thromboembolic events. AF has a negative impact on the natural history of MS and on its outcome after commissurotomy. The respective indications of rhythm and rate control should be adapted to patient characteristics, particularly the consequences of MS, and take into account the high risk of recurrence of AF...
February 16, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29452889/anthropometric-and-biochemical-determinants-of-estimated-glomerular-filtration-rate-in-a-large-cohort-of-obese-children
#14
Pierluigi Marzuillo, Anna Grandone, Anna Di Sessa, Stefano Guarino, Mario Diplomatico, Giuseppina Rosaria Umano, Cesare Polito, Angela La Manna, Laura Perrone, Emanuele Miraglia Del Giudice
OBJECTIVE: We aimed to investigate which clinical and metabolic factors could influence the estimated glomerular filtration rate (eGFR) levels, evaluating a large population of obese children without suspect of primary kidney disease. DESIGN: Retrospective, cross-sectional study. SETTING: Pediatric university department. SUBJECTS: We enrolled 2,957 obese children and adolescents consecutively attending our department between January 2000 and 2017...
February 13, 2018: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/29452601/reactive-hyperemia-index-rhi-and-cognitive-performance-indexes-are-associated-with-histologic-markers-of-liver-disease-in-subjects-with-non-alcoholic-fatty-liver-disease-nafld-a-case-control-study
#15
Antonino Tuttolomondo, Salvatore Petta, Alessandra Casuccio, Carlo Maida, Vittoriano Della Corte, Mario Daidone, Domenico Di Raimondo, Rosaria Pecoraro, Roberto Fonte, Anna Cirrincione, Rita Zafonte, Daniela Cabibi, Calogero Cammà, Vito Di Marco, Anna Licata, Franco Magliozzo, Giulio Marchesini, Giovanni Merlino, Antonio Craxì, Antonio Pinto
BACKGROUND: No study evaluated vascular health markers in subjects with non-alcoholic fatty liver disease (NAFLD) through a combined analysis of reactive hyperemia peripheral arterial tonometry (RH-PAT) and arterial stiffness indexes. AIM OF THE STUDY: We aimed to assess whether NAFLD and its histological severity are associated with impairment of arterial stiffness and RH-PAT indexes in a mixed cohort of patients with biopsy-proven NAFLD. MATERIALS AND METHODS: The Kleiner classification was used to grade NAFLD grade...
February 16, 2018: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29452343/height-based-equations-can-improve-the-diagnosis-of-elevated-blood-pressure-in-children
#16
F A Mourato, S S Mattos, J L Lima Filho, M F Mourato, W Nadruz JÚnior
Background: High blood pressure (BP) is usually underdiagnosed in children and adolescents, particularly due to its complex diagnosis process. This study describes novel height-based equations for the detection of BP disorders (BP>90th percentile) and compares the accuracy of this approach with previously described screening methods to identify BP disorders. Methods: Height-based equations were built using the 90th percentile values for systolic and diastolic BP and respective height values from the current guideline of high BP management in children...
February 14, 2018: American Journal of Hypertension
https://www.readbyqxmd.com/read/29452110/exploring-the-impact-of-house-screening-intervention-on-entomological-indices-and-incidence-of-malaria-in-arba-minch-town-southwest-ethiopia-a-randomized-control-trial
#17
Solomon Kinde Getawen, Temesgen Ashine, Fekadu Massebo, Daniel Woldeyes, Bernt Lindtjørn
House is the major site for malaria infection where most human-vector contact takes place. Hence, improving housing might reduce the risk of malaria infection by limiting house entry of vectors. This study aimed to explore the impact of screening doors and windows with wire meshes on density and entomological inoculation rate (EIR) of malaria vector, and malaria incidence, and assess the acceptability, durability, and cost of the intervention. The susceptibility status of malaria vector was also assessed. A two-arm randomized trial was done in Arba Minch Town, southwest Ethiopia...
February 13, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29451148/increased-endogenous-sulfur-dioxide-involved-in-the-pathogenesis-of-postural-tachycardia-syndrome-in-children-a-case-control-study
#18
Hong-Xia Li, Xiao-Chun Zheng, Si-Yao Chen, Ying Liao, Zhen-Hui Han, Pan Huang, Chu-Fan Sun, Jia Liu, Jing-Yuan Song, Chao-Shu Tang, Jun-Bao Du, Yong-Hong Chen, Hong-Fang Jin
Background: The pathogenesis of postural tachycardia syndrome (POTS) remains unclear. This study aimed to explore the changes and significance of sulfur dioxide (SO 2 ) in patients with POTS. Methods: The study included 31 children with POTS and 27 healthy children from Peking University First Hospital between December 2013 and October 2015. A detailed medical history, physical examination results, and demographic characteristics were collected. Hemodynamics was recorded and the plasma SO 2 was determined...
February 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29448487/model-for-the-growth-and-the-oscillation-of-a-cavitation-bubble-in-a-spherical-liquid-filled-cavity-enclosed-in-an-elastic-medium
#19
Alexander A Doinikov, Benjamin Dollet, Philippe Marmottant
Equations are derived that describe the growth and subsequent damped oscillation of a cavitation bubble in a liquid-filled cavity surrounded by an elastic solid. It is assumed that the nucleation and the growth of the bubble are caused by an initial negative pressure in the cavity. The liquid is treated as viscous and compressible. The obtained equations allow one to model, by numerical computation, the growth and the oscillation of the bubble in the cavity and the oscillation of the cavity surface. It is shown that the equilibrium radius reached by the growing bubble decreases when the absolute magnitude of the initial negative pressure decreases...
January 2018: Physical Review. E
https://www.readbyqxmd.com/read/29447429/arterial-stiffness-and-subendocardial-viability-ratio-in-patients-with-peripheral-arterial-disease
#20
Giovanni Scandale, Gabriel Dimitrov, Martino Recchia, Gianni Carzaniga, Marzio Minola, Edoardo Perilli, Maria Carotta, Mariella Catalano
Arterial stiffening is a hallmark of the aging process and atherosclerosis, including peripheral arterial disease (PAD). We investigated the associations between carotid-femoral pulse wave velocity (c-fPWV), augmentation index corrected for heart rate (Aix@HR75), ankle brachial index (ABI), and subendocardial viability ratio (SEVR), an indicator of cardiac perfusion. The c-fPWV, Aix@HR75, and SEVR was estimated using applanation tonometry. The ankle systolic pressure measurements for the calculation of the ABI were obtained using an 8-mHz Doppler probe...
February 15, 2018: Journal of Clinical Hypertension
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