keyword
MENU ▼
Read by QxMD icon Read
search

Alveoli

keyword
https://www.readbyqxmd.com/read/27913424/digital-3d-reconstructions-using-histological-serial-sections-of-lung-tissue-including-the-alveolar-capillary-network
#1
Roman Grothausmann, Lars Knudsen, Matthias Ochs, Christian Mühlfeld
The alveolar capillary network (ACN) provides an enormously large surface area that is necessary for pulmonary gas exchange. Changes of the ACN during normal or pathological development or in pulmonary diseases are of great functional impact and warrant further analysis. Due to the complexity of the three-dimensional (3D) architecture of the ACN, 2D approaches are limited in providing a comprehensive impression of the characteristics of the normal ACN or the nature of its alterations. Stereological methods offer a quantitative way to assess the ACN in 3D in terms of capillary volume, surface area or number but lack a 3D visualization to interpret the data...
December 2, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27908404/fluoride-affects-bone-repair-differently-in-mice-models-with-distinct-bone-densities
#2
Paula Kennerly Herrera, Andressa Pelissari Zambolin, Mileni da Silva Fernandes, Tânia Mary Cestari, Flávia Godoy Iano, Willian Fernando Zambuzzi, Marília Afonso Rabelo Buzalaf, Rodrigo Cardoso de Oliveira
We grouped mice [strains: C57BL/6J (n=32) and C3H/HeJ (n=32)] to address the influence of bone density on fluoride's (F's) biological effects. These animals received low-fluoride food and water containing 0 (control group) or 50ppm of F for up to 28days. The upper left central incisor was extracted, and the left maxilla was collected at 7, 14, 21, and 28days for histological and histomorphometric analysis to estimate bone neoformation. Our results showed bone neoformation in all of the evaluated groups, with the presence of bone islets invading the center of the alveoli when replacing the existing connective tissue...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27907096/global-deletion-of-tspo-does-not-affect-the-viability-and-gene-expression-profile
#3
Huaishan Wang, Kangle Zhai, Yingchao Xue, Jia Yang, Qi Yang, Yi Fu, Yu Hu, Fang Liu, Weiqing Wang, Lianxian Cui, Hui Chen, Jianmin Zhang, Wei He
Translocator Protein (18kDa, TSPO) is a mitochondrial outer membrane transmembrane protein. Its expression is elevated during inflammation and injury. However, the function of TSPO in vivo is still controversial. Here, we constructed a TSPO global knockout (KO) mouse with a Cre-LoxP system that abolished TSPO protein expression in all tissues and showed normal phenotypes in the physiological condition. The birth rates of TSPO heterozygote (Het) x Het or KO x KO breeding were consistent with Mendel's Law, suggesting a normal viability of TSPO KO mice at birth...
2016: PloS One
https://www.readbyqxmd.com/read/27901512/mitochondrial-dysfunction-in-alveolar-and-white-matter-developmental-failure-in-premature-infants
#4
Vadim S Ten
At birth, some organs in premature infants are not developed enough to meet challenges of the extra-uterine life. Although growth and maturation continues after premature birth, postnatal organ development may become sluggish or even arrested, leading to organ dysfunction. There is no clear mechanistic concept of this postnatal organ developmental failure in premature neonates. This review introduces a concept-forming hypothesis: Mitochondrial bioenergetic dysfunction is a fundamental mechanism of organs maturation failure in premature infants...
November 30, 2016: Pediatric Research
https://www.readbyqxmd.com/read/27890991/pulmonary-alveolar-proteinosis-experience-from-a-tertiary-care-center-and-systematic-review-of-indian-literature
#5
Vijay Hadda, Pawan Tiwari, Karan Madan, Anant Mohan, Nishkarsh Gupta, Sachidanand Jee Bharti, Vinod Kumar, Rakesh Garg, Anjan Trikha, Deepali Jain, Sudheer Arava, Gopi C Khilnani, Randeep Guleria
BACKGROUND: Pulmonary alveolar proteinosis (PAP) is a rare disorder characterized by deposition of lipoproteinaceous material within alveoli, with a variable clinical course. Here, we report an experience of management of PAP at our center. A systematic review of previously reported cases from India is also included in the article. MATERIALS AND METHODS: This study included patients with primary PAP managed at our center from 2009 to 2015. Diagnosis of primary PAP was based on histopathologic diagnosis on bronchoalveolar lavage or transbronchial lung biopsy and absence of causes of secondary PAP...
November 2016: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/27879598/alveolar-bone-grafting-and-cleft-lip-and-palate-a-review
#6
E Hope Weissler, Kaitlyn M Paine, Mairaj K Ahmed, Peter J Taub
Alveolar bone grafting in the mixed dentition stage is an accepted step in the management of cleft alveoli, providing maxillary arch support for dentition and mastication. Points of contention regarding best practices remain, including specific timing, perioperative orthodontic management, bone harvest and substitutes, pain management, and outcomes evaluations. SCOPUS and MEDLINE were searched for articles about alveolar bone grafting, which were read independently by two authors and selected for inclusion on the basis of relevance and merit...
December 2016: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27879496/death-due-to-pulmonary-alveolar-proteinosis
#7
Emran Altaf, Erik K Mitchel, Chris Berry, Altaf Hossain
Presented are 2 cases of death from pulmonary alveolar proteinosis (PAP). Within the past 2 years, there have been 2 cases of rare nonneoplastic lung disease that consists of the filling of the alveoli of the lung by a periodic acid-Schiff stain-positive lipoproteinaceous material. This condition bears a certain resemblance to interstitial lung disease and/or Pneumocystitis jirovecci infection of the lungs. The presented cases were clinically diagnosed as interstitial lung disease. In the first case presented, the decedent was admitted to hospital with diagnosis of pneumonia but died in hospital despite observation and treatment...
November 23, 2016: American Journal of Forensic Medicine and Pathology
https://www.readbyqxmd.com/read/27871676/streamline-crossing-an-essential-mechanism-for-aerosol-dispersion-in-the-pulmonary-acinus
#8
Rami Fishler, Yan Ostrovski, Chao-Yi Lu, Josué Sznitman
The dispersion of inhaled microparticles in the pulmonary acinus of the lungs is often attributed to the complex interplay between convective mixing, due to irreversible flows, and intrinsic particle motion (i.e. gravity and diffusion). However, the role of each mechanism, the exact nature of such interplay between them and their relative importance still remain unclear. To gain insight into these dispersive mechanisms, we track liquid-suspended microparticles and extract their effective diffusivities inside an anatomically-inspired microfluidic acinar model...
November 13, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27869174/developmental-reprogramming-in-mesenchymal-stromal-cells-of-human-subjects-with-idiopathic-pulmonary-fibrosis
#9
Diptiman Chanda, Ashish Kurundkar, Sunad Rangarajan, Morgan Locy, Karen Bernard, Nirmal S Sharma, Naomi J Logsdon, Hui Liu, David K Crossman, Jeffrey C Horowitz, Stijn De Langhe, Victor J Thannickal
Cellular plasticity and de-differentiation are hallmarks of tissue/organ regenerative capacity in diverse species. Despite a more restricted capacity for regeneration, humans with age-related chronic diseases, such as cancer and fibrosis, show evidence of a recapitulation of developmental gene programs. We have previously identified a resident population of mesenchymal stromal cells (MSCs) in the terminal airways-alveoli by bronchoalveolar lavage (BAL) of human adult lungs. In this study, we characterized MSCs from BAL of patients with stable and progressive idiopathic pulmonary fibrosis (IPF), defined as <5% and ≥10% decline, respectively, in forced vital capacity over the preceding 6-month period...
November 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27866810/histological-characterisation-of-visceral-changes-in-a-patient-with-type-2-gaucher-disease-treated-with-enzyme-replacement-therapy
#10
Yuko Tezuka, Mitsumasa Fukuda, Shohei Watanabe, Takeshi Nakano, Kentaro Okamoto, Kazuyo Kuzume, Yoshiaki Yano, Mariko Eguchi, Minenori Ishimae, Eiichi Ishii, Tatsuhiko Miyazaki
Gaucher disease is a lysosomal storage disease caused by deficiency of glucocerebrosidase and accumulation of glucocerebroside. Three major sub-types have been described, type 2 is an acute neurological form that exhibits serious general symptoms and poor prognosis, compared with the other types. This case was a girl diagnosed with type 2 Gaucher disease at 12months of age who presented with poor weight gain from infancy, stridor, hypertonia, hepatosplenomegaly, trismus and an eye movement disorder. Enzyme replacement therapy (ERT) was administered, but she had frequent myoclonus and developmental regression...
November 12, 2016: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/27865481/the-influence-of-tethering-and-gravity-on-the-stability-of-compliant-liquid-lined-airways
#11
Jeremy Whang, Chandler Faulman, Thomas A Itin, Donald P Gaver
This study revolves around two simple questions: 1) how does pulmonary airway recruitment/de-recruitment (RecDer) depend on the tethering support provided by surrounding airways and alveoli, and 2) does airway angle of inclination (θ) influence airway stability? These two questions are critical to understanding the existence and prevention of atelectrauma, which may contribute to ventilator-induced lung injury (VILI). To address these questions, we develop PDMS 2mm ID compliant tubes that mimic pulmonary airways...
November 11, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27855477/recruitment-manoeuvres-for-adults-with-acute-respiratory-distress-syndrome-receiving-mechanical-ventilation
#12
REVIEW
Carol Hodgson, Ewan C Goligher, Meredith E Young, Jennifer L Keating, Anne E Holland, Lorena Romero, Scott J Bradley, David Tuxen
BACKGROUND: Recruitment manoeuvres involve transient elevations in airway pressure applied during mechanical ventilation to open ('recruit') collapsed lung units and increase the number of alveoli participating in tidal ventilation. Recruitment manoeuvres are often used to treat patients in intensive care who have acute respiratory distress syndrome (ARDS), but the effect of this treatment on clinical outcomes has not been well established. This systematic review is an update of a Cochrane review originally published in 2009...
November 17, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27843268/comparative-efficacy-of-amoxicillin-clavulanic-acid-and-levofloxacin-in-the-reduction-of-postsurgical-sequelae-after-third-molar-surgery-a-randomized-double-blind-clinical-trial-in-a-nigerian-university-teaching-hospital
#13
Kizito Chioma Ndukwe, Ramat Oyebunmi Braimah, John Foluso Owotade, Stephen Babatunde Aregbesola
BACKGROUND: The most common sequelae after surgical removal of mandibular third molar are pain, trismus, swelling, and dysphagia. However, these symptoms can also signal the onset of surgical site infection and alveoli osteitis. The aim of this study was to evaluate the efficacy of prophylactic amoxicillin/clavulanic acid and levofloxacin and preemptive therapy of amoxicillin/clavulanic acid in the reduction of postinflammatory complications, surgical site infection, and alveolar osteitis following the third molar surgery...
July 2016: Nigerian Journal of Surgery: Official Publication of the Nigerian Surgical Research Society
https://www.readbyqxmd.com/read/27843119/potential-nutrients-for-preventing-or-treating-bronchopulmonary-dysplasia
#14
REVIEW
Liya Ma, Ping Zhou, Josef Neu, Hung-Chih Lin
Bronchopulmonary dysplasia (BPD) is a frequent complication occurring in extremely preterm infants. Despite recent advances in newborn medicine, the incidence of BPD does not appear to have changed markedly, and specific treatments and prevention strategies are still lacking. Nutrition plays an important role in normal lung development and maturation. Malnutrition may delay somatic growth and new alveoli development, thus aggravating pulmonary injury involved in the pathogenesis of BPD. However, few nutrients have been investigated for their potential to mitigate the pathogenesis of BPD...
September 15, 2016: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/27836901/deformation-induced-transitional-myofibroblasts-remodel-the-lung-during-compensatory-growth
#15
Robert D Bennett, Alexandra B Ysasi, Willi L Wagner, Cristian D Valenzuela, Akira Tsuda, Saumyadipta Pyne, Shuqiang Li, Jonna Grimsby, Prapti Pokharel, Kenneth J Livak, Maximilian Ackermann, Paul Blainey, Steven J Mentzer
In many mammals, including humans, removal of one lung (pneumonectomy) results in the compensatory growth of the remaining lung. Compensatory growth involves not only an increase in lung size, but also an increase in the number of alveoli in the peripheral lung; however, the process of compensatory neoalveolarization remains poorly understood. Here, we show that the expression of α-smooth muscle actin (SMA)-a cytoplasmic protein characteristic of myofibroblasts-is induced in the pleura following pneumonectomy...
November 11, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27827953/blocking-trpa1-in-respiratory-disorders-does-it-hold-a-promise
#16
REVIEW
Indranil Mukhopadhyay, Abhay Kulkarni, Neelima Khairatkar-Joshi
Transient Receptor Potential Ankyrin 1 (TRPA1) ion channel is expressed abundantly on the C fibers that innervate almost entire respiratory tract starting from oral cavity and oropharynx, conducting airways in the trachea, bronchi, terminal bronchioles, respiratory bronchioles and upto alveolar ducts and alveoli. Functional presence of TRPA1 on non-neuronal cells got recognized recently. TRPA1 plays a well-recognized role of "chemosensor", detecting presence of exogenous irritants and endogenous pro-inflammatory mediators that are implicated in airway inflammation and sensory symptoms like chronic cough, asthma, chronic obstructive pulmonary disease (COPD), allergic rhinitis and cystic fibrosis...
November 5, 2016: Pharmaceuticals
https://www.readbyqxmd.com/read/27818646/immunoprotective-efficacy-of-six-in-vivo-induced-antigens-against-actinobacillus-pleuropneumoniae-as-potential-vaccine-candidates-in-murine-model
#17
Fei Zhang, Sanjie Cao, Zhuang Zhu, Yusheng Yang, Xintian Wen, Yung-Fu Chang, Xiaobo Huang, Rui Wu, Yiping Wen, Qigui Yan, Yong Huang, Xiaoping Ma, Qin Zhao
Six in vivo-induced (IVI) antigens-RnhB, GalU, GalT, Apl_1061, Apl_1166, and HflX were selected for a vaccine trial in a mouse model. The results showed that the IgG levels in each immune group was significantly higher than that of the negative control (P < 0.001). Except rRnhB group, proliferation of splenocytes was observed in all immunized groups and a relatively higher proliferation activity was observed in rGalU and rGalT groups (P < 0.05). In the rGalT vaccinated group, the proportion of CD4+ T cells in spleen was significant higher than that of negative control (P < 0...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27813483/-effects-of-volcanic-eruptions-on-human-health-in-iceland-review
#18
Gunnar Gudmundsson, Guðrun Larsen
Volcanic eruptions are common in Iceland and have caused health problems ever since the settlement of Iceland. Here we describe volcanic activity and the effects of volcanic gases and ash on human health in Iceland. Volcanic gases expelled during eruptions can be highly toxic for humans if their concentrations are high, irritating the mucus membranes of the eyes and upper respiratory tract at lower concentrations. They can also be very irritating to the skin. Volcanic ash is also irritating for the mucus membranes of the eyes and upper respiratory tract...
October 2016: Læknablađiđ
https://www.readbyqxmd.com/read/27810625/computationally-efficient-analysis-of-particle-transport-and-deposition-in-a-human-whole-lung-airway-model-part-i-theory-and-model-validation
#19
Arun V Kolanjiyil, Clement Kleinstreuer
Computational predictions of aerosol transport and deposition in the human respiratory tract can assist in evaluating detrimental or therapeutic health effects when inhaling toxic particles or administering drugs. However, the sheer complexity of the human lung, featuring a total of 16 million tubular airways, prohibits detailed computer simulations of the fluid-particle dynamics for the entire respiratory system. Thus, in order to obtain useful and efficient particle deposition results, an alternative modeling approach is necessary where the whole-lung geometry is approximated and physiological boundary conditions are implemented to simulate breathing...
October 27, 2016: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/27799180/high-peep-in-acute-respiratory-distress-syndrome-quantitative-evaluation-between-improved-arterial-oxygenation-and-decreased-oxygen-delivery
#20
M Chikhani, A Das, M Haque, W Wang, D G Bates, J G Hardman
BACKGROUND: Positive end-expiratory pressure (PEEP) is widely used to improve oxygenation and prevent alveolar collapse in mechanically ventilated patients with the acute respiratory distress syndrome (ARDS). Although PEEP improves arterial oxygenation predictably, high-PEEP strategies have demonstrated equivocal improvements in ARDS-related mortality. The effect of PEEP on tissue oxygen delivery is poorly understood and is difficult to quantify or investigate in the clinical environment...
November 2016: British Journal of Anaesthesia
keyword
keyword
4328
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"