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Lung capacity

Xin-Yu Tian, Chun-Hong Liu, De-Xiang Wang, Xiu-Li Ji, Hui Shi, Chun-Yan Zheng, Meng-Shuang Xie, Wei Xiao
Background: The interpretation of spirometry varies on different reference values. Older people are usually underrepresented in published predictive values. This study aimed at developing spirometric reference equations for elderly Chinese in Jinan aged 60-84 years and to compare them to previous equations. Methods: The project covered all of Jinan city, and the recruitment period lasted 9 months from January 1, 2017 to September 30, 2017, 434 healthy people aged 60-84 years who had never smoked (226 females and 208 males) were recruited to undergo spirometry...
March 19, 2018: Chinese Medical Journal
Pablo A Cortes, Francisco Bozinovic, Pierre U Blier
Mammalian torpor is a phenotype characterized by a controlled decline of metabolic rate, generally followed by a reduction in body temperature. During arousal from torpor, both metabolic rate and body temperature rapidly returns to resting levels. Metabolic rate reduction experienced by torpid animals is triggered by active suppression of mitochondrial respiration, which is rapidly reversed during rewarming process. In this study, we analyzed the changes in the maximal activity of key enzymes related to electron transport system (complexes I, III and IV) in six tissues of torpid, arousing and euthermic Chilean mouse-opossums (Thylamys elegans)...
March 15, 2018: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
Dandan Xu, Yi Zhang, Lian Zhou, Tiantian Li
The association between exposure to ambient particulate matter (PM) and reduced lung function parameters has been reported in many works. However, few studies have been conducted in developing countries with high levels of air pollution like China, and little attention has been paid to the acute effects of short-term exposure to air pollution on lung function. The study design consisted of a panel comprising 86 children from the same school in Nanjing, China. Four measurements of lung function were performed...
March 17, 2018: Environmental Science and Pollution Research International
Cristian Alfredo Segura-Cerda, Michel de Jesús Aceves-Sánchez, Brenda Marquina-Castillo, Dulce Mata-Espinoza, Jorge Barrios-Payán, Perla Jazmín Vega-Domínguez, César Pedroza-Roldán, Jorge Bravo-Madrigal, Alba Adriana Vallejo-Cardona, Rogelio Hernández-Pando, Mario Alberto Flores-Valdez
Pellicles, a type of biofilm, have gathered a renewed interest in the field of tuberculosis as a structure that mimics some characteristics occurring during M. tuberculosis infection, such as antibiotic recalcitrance and chronicity of infection, and as a source of antigens for humoral response in infected guinea pigs. In other bacteria, it has been well documented that the second messenger c-di-GMP modulates the transition from planktonic cells to biofilm formation. In this work, we used the live vaccine Mycobacterium bovis BCG to determine whether deletion of genes involved in c-di-GMP metabolism would affect interaction with macrophages, capacity to induce immune response in a murine cell line and mice, and how the protein profile was modified when grown as surface pellicles...
March 14, 2018: Vaccine
Patrícia L Abreu, Teresa Cunha-Oliveira, Leonardo M R Ferreira, Ana M Urbano
Exposure to hexavalent chromium [Cr(VI)], a lung carcinogen, triggers several types of cellular stresses, namely oxidative, genotoxic and proteotoxic stresses. Given the evolutionary character of carcinogenesis, it is tempting to speculate that cells that survive the stresses produced by this carcinogen become more resistant to subsequent stresses, namely those encountered during neoplastic transformation. To test this hypothesis, we determined whether pre-incubation with Cr(VI) increased the resistance of human bronchial epithelial cells (BEAS-2B cells) to the antiproliferative action of acute thermal shock, used here as a model for stress...
March 16, 2018: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
Mehrdad Behnia, Courtney M Wheatley, Alberto Avolio, Bruce D Johnson
BACKGROUND: During exercise as pulmonary blood flow rises, pulmonary capillary blood volume increases and gas exchange surface area expands through distention and recruitment. We have previously demonstrated that pulmonary capillary recruitment is limited in COPD patients with poorer exercise tolerance. Hypoxia and endothelial dysfunction lead to pulmonary vascular dysregulation possibly in part related to nitric oxide related pathways. PURPOSE: To determine if increasing dietary nitrate might influence lung surface area for gas exchange and subsequently impact exercise performance...
March 13, 2018: Nitric Oxide: Biology and Chemistry
Aiko Ogawa, Yukari Takahashi, Hiromi Matsubara
BACKGROUND: Pulmonary veno-occlusive disease (PVOD) and pulmonary capillary hemangiomatosis (PCH) are rare causes of pulmonary hypertension. Although diagnosis is based on pathological findings, an early diagnosis is crucial because of poor prognosis compared to other types of pulmonary hypertension. Furthermore, vasodilators may cause fatal pulmonary edema in patients with PVOD/PCH. This study aimed to identify specific characteristics for patients with PVOD/PCH to clinically diagnose PVOD/PCH...
March 13, 2018: Journal of Cardiology
Marta Rasal Carnicer, Laura Juguera Rodríguez, Nuria Vela de Oro, Ana Belén García Pérez, Nuria Pérez Alonso, Manuel Pardo Ríos
OBJECTIVES: The main purpose of this study in healthy volunteers was to compare the lung function effects of 2 extrication devices that use spinal vests: the Kendrick Extrication Device (KED) and the Ferno KED-XT board. MATERIAL AND METHODS: Randomized crossover trial in 50 healthy adult volunteers. The subjects were placed in the KED and KED-XT devices for 5 minutes each and rested for 10 minutes between devices. Assignment to the first device was randomized. Each subject underwent spirometry at baseline and after placement of each device...
2018: Emergencias: Revista de la Sociedad Española de Medicina de Emergencias
Jaeseok Lee, Dongwook Han
[Purpose] The purpose of this study is to study the impact of knee extensor strength, which is an index of the degree of physical activity on lung capacity in older women. [Subjects and Methods] Thirty-three older women who participated in the exercise program hosted by a senior citizen center and S University located in Busan. Force vital capacity (FVC) was measured with digital spirometry (Pony FX, COSMED Inc., Italy). Three rounds of measurements were taken for each participant, with one-minute rests between the tests...
February 2018: Journal of Physical Therapy Science
Daniel Langer, Casey E Ciavaglia, Azmy Faisal, Katherine A Webb, J Alberto Neder, Rik Gosselink, Sauwaluk Dacha, Marko Topalovic, Anna Ivanova, Denis E O'Donnell
Among patients with COPD, those with the lowest maximal inspiratory pressures experience greater breathing discomfort (dyspnea) during exercise. In such individuals, inspiratory muscle training (IMT) may be associated with improvement of dyspnea but the mechanisms for this are poorly understood. Therefore, we aimed to identify physiological mechanisms of improvement in dyspnea and exercise endurance following inspiratory muscle training (IMT) in patients with COPD and low maximal inspiratory pressure (Pi,max)...
March 15, 2018: Journal of Applied Physiology
Cheng Chen, Bojia Zhang, Shanshan Wu, Yongxiang Song, Jian Li
Eukaryotic translation initiation factor 5A2 (EIF5A2) has been demonstrated to be upregulated in numerous types of human cancer and is associated with cancer progression. However, the expression and role of EIF5A2 in non-small cell lung cancer (NSCLC) remains unclear. In the present study, the role of EIF5A2 in NSCLC was investigated, in addition to the underlying molecular mechanisms by which EIF5A2 acts. Relative EIF5A2 expression levels were determined in NSCLC cells and compared with levels in non-cancerous lung tissues...
April 2018: Oncology Letters
Arthur Bill Musk, Michael Hunter, Jennie Hui, Matthew W Knuiman, Mark Divitini, John P Beilby, Alan James
OBJECTIVE: To document the changing levels of tobacco smoking, respiratory symptoms, doctor-diagnosed asthma, and lung function in Busselton adults aged 46-65 years over the past 50 years. DESIGN, SETTING, PARTICIPANTS: Repeated cross-sectional population surveys (1966 to 2010-2015) of adults registered to vote in the Busselton shire, Western Australia, including a modified version of the British Medical Research Council questionnaire on respiratory symptoms. MAIN OUTCOME MEASURES: History of doctor-diagnosed asthma and chronic obstructive pulmonary disease (COPD), tobacco smoking history, respiratory medications used, spirometry parameters (forced expiratory volume in one second [FEV1], forced vital capacity [FVC])...
March 19, 2018: Medical Journal of Australia
Antoine Roux, Kimberly A Thomas, Edouard Sage, Caroline Suberbielle-Boissel, Laurence Beaumont-Azuar, Francois Parquin, Morgan Le Guen, Nicholas Harre, Abdul Monem Hamid, Elaine F Reed
Complement-mediated allograft injury, elicited by donor specific HLA antibodies (DSA), is a defining pathophysiological characteristic of allograft damage. We aimed to study DSA-induced complement activation as a diagnostic marker of antibody mediated rejection (AMR) and a risk stratification tool for graft loss in the context of lung transplantation (LT). We identified 38 DSA positive patients whose serum samples were submitted for C3d deposition testing via the C3d assay. Among these 38 patients, 15 had AMR (DSAP os AMRP os )...
March 14, 2018: Transplant International: Official Journal of the European Society for Organ Transplantation
Maria Kerti, Zsuzsanna Balogh, Krisztina Kelemen, Janos T Varga
Rationale: The relationship of functional parameters such as lung mechanics, chest kinematics, metabolism and peripheral and respiratory muscle function with the level of exercise tolerance remains a controversial subject. While it has been previously shown that pulmonary rehabilitation is capable of improving exercise tolerance in patients afflicted by COPD, as expressed by values of 6-minute walking test (6MWT), the degree of contribution to this change by each of the aforementioned parameters remains unclear...
2018: International Journal of Chronic Obstructive Pulmonary Disease
Hyeok-Il Kwon, Eun-Ha Kim, Young-Il Kim, Su-Jin Park, Young-Jae Si, In-Won Lee, Hiep Dinh Nguyen, Kwang Min Yu, Min-Ah Yu, Ju Hwan Jung, Won-Suk Choi, Jin Jung Kwon, Su Jeong Ahn, Yun Hee Baek, Dam Van Lai, Ok-Jun Lee, Si-Wook Kim, Min-Suk Song, Sun-Woo Yoon, Chul-Joong Kim, Richard J Webby, In-Pil Mo, Young Ki Choi
Highly pathogenic avian influenza (HPAI) A(H5N6) and A(H5N8) virus infections resulted in the culling of more than 37 million poultry in the Republic of Korea during the 2016/17 winter season. Here we characterize two representative viruses, A/Environment/Korea/W541/2016 [Em/W541(H5N6)] and A/Common Teal/Korea/W555/2017 [CT/W555(H5N8)], and evaluate their zoonotic potential in various animal models. Both Em/W541(H5N6) and CT /W555(H5N8) are novel reassortants derived from various gene pools of wild bird viruses present in migratory waterfowl arising from eastern China...
March 14, 2018: Emerging Microbes & Infections
Xiaomeng Wan, Yuanzeng Min, Herdis Bludau, Andrew Keith, Sergei S Sheiko, Rainer Jordan, Andrew Z Wang, Marina Sokolsky-Papkov, Alexander V Kabanov
Nanoparticle-based systems for concurrent delivery of multiple drugs can improve outcomes of cancer treatments, but face challenges because of differential solubility and fairly low threshold for incorporation of many drugs. Here we demonstrate that this approach can be used to greatly improve the treatment outcomes of etoposide (ETO) and platinum drug combination ("EP/PE") therapy that is the backbone for treatment of prevalent and deadly small cell lung cancer (SCLC). A polymeric micelle system based on amphiphilic block copolymer poly(2-oxazoline)s (POx) poly(2-methyl-2-oxazoline-block-2-butyl-2-oxazoline-block-2-methyl-2-oxazoline) (P(MeOx-b-BuOx-b-MeOx) is used along with an alkylated cisplatin prodrug to enable co-formulation of EP/PE in a single high-capacity vehicle...
March 13, 2018: ACS Nano
Patrick J Smith, Rebecca Byrd, Megan Lusby, Emily Clausen, Laurie D Snyder
BACKGROUND: Depressive symptoms are common among lung transplant recipients and have been associated with worse clinical outcomes. However, few studies have examined the association between depressive symptoms assessed at multiple time points or behavioral mechanisms by which post-transplant depressive symptoms may confer greater clinical risk. We therefore examined the associations between depressive symptoms, exercise capacity, chronic lung allograft dysfunction (CLAD), and mortality prospectively in a large sample of lung transplant recipients...
March 12, 2018: Psychosomatic Medicine
Ipek Candemir, Pinar Ergun, Dicle Kaymaz, Filiz Tasdemir, Nurcan Egesel
BACKGROUND: There are limited number of studies that investigate clinical variables instead of chronic obstructive lung disease (COPD) management according to Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2017 classification. The aim of the study was to investigate whether there was a difference between GOLD 2017 classification and spirometric stage in clinical variables in patients with COPD. The data of 427 male patients with stable COPD were investigated retrospectively...
March 7, 2018: Tuberculosis and Respiratory Diseases
Shinya Sakata, Yasumiko Sakamoto, Akira Takaki, Shiho Ishizuka, Sho Saeki, Kazuhiko Fujii
Pseudomesotheliomatous carcinoma of the lung is very rare, and reversible restrictive lung disease with pseudomesotheliomatous carcinoma has not yet been previously reported. We herein report a patient with HER2-positive non-small-cell lung cancer (NSCLC) showing pseudomesotheliomatous carcinoma who was successfully treated with bevacizumab combination chemotherapy. A 56-year-old Japanese woman with advanced NSCLC presented with dyspnea. We administered chemotherapy with cisplatin (75 mg/m2 ) plus pemetrexed (500 mg/m2 ) plus bevacizumab (15 mg/kg), followed by pemetrexed plus bevacizumab...
March 9, 2018: Internal Medicine
Shi-Jun Liu, Zhi-Shu Tang, Zhi-Xin Liao, Chun-Li Cui, Hong-Bo Liu, Yan-Ni Liang, Yu Zhang, Hong-Bo Xu, Dong-Bo Zhang, Ya-Ting Zheng, Huan-Xian Shi, Shi-Ying Li
ETHNOPHARMACOLOGICAL RELEVANCE: Ligularia przewalskii (Maxim.) Diels (LP) (called zhangyetuowu in Chinese), is generally found in moist forest areas in the western regions of China. The root, leaves and flower of LP are utilized as a common traditional medicine in China. It has been utilized conventionally in herbal remedies for the remedy of haemoptysis, asthma, pulmonary phthisis, jaundice hepatitis, food poisoning, bronchitis, cough, fever, wound healing, measles, carbuncle, swelling and phlegm diseases...
March 8, 2018: Journal of Ethnopharmacology
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