Significant intrapulmonary Schistosoma egg antigens are not present in schistosomiasis-associated pulmonary hypertension.

Abstract:

:Schistosomiasis-associated pulmonary arterial hypertension (PAH) is one of the most common causes of pulmonary hypertension worldwide. A potential contributing mechanism to the pathogenesis of this disease is a localized immune reaction to retained and persistent parasite-derived antigens. We sought to identify Schistosoma-derived egg antigens present in the lungs of individuals who died of the disease. We obtained 18 lung samples collected at autopsy from individuals who died of schistosomiasis-associated PAH in Brazil. A rabbit polyclonal antibody was created to known Schistosoma mansoni-soluble egg antigen (SEA). Histologic assessment and immunostaining of the human tissue was performed, along with immunostaining and immunoblotting of lung tissue from mice experimentally infected with S. mansoni. All 18 lung samples had evidence of pulmonary vascular remodeling with plexiform lesions and arterial medial thickening, but no visible eggs were seen. The anti-SEA antibody detected S. mansoni egg antigens in visible eggs in mouse lung and human intestine specimens, but did not identify a significant amount of egg antigen in the human lung specimens. In mouse granulomas containing degraded eggs, we observed colocalization of egg antigens and macrophage lysosomes. In conclusion, there is unlikely to be a significant amount of persistent parasite-derived antigens within the lungs of individuals who die of schistosomiasis-associated PAH. This suggests that retained and persistent parasite proteins are not contributing to a localized immune response in the pathogenesis of this disease.

journal_name

Pulm Circ

journal_title

Pulmonary circulation

authors

Graham BB,Chabon J,Bandeira A,Espinheira L,Butrous G,Tuder RM

doi

10.4103/2045-8932.93544

subject

Has Abstract

pub_date

2011-10-01 00:00:00

pages

456-61

issue

4

eissn

2045-8932

issn

2045-8940

pii

PC-1-456

journal_volume

1

pub_type

杂志文章
  • Novel approach to classifying patients with pulmonary arterial hypertension using cluster analysis.

    abstract::Pulmonary arterial hypertension (PAH) patients have distinct disease courses and responses to treatment, but current diagnostic and treatment schemes provide limited insight. We aimed to see if cluster analysis could distinguish clinical phenotypes in PAH. An unbiased cluster analysis was performed on 17 baseline clin...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1177/2045893217705891

    authors: Parikh KS,Rao Y,Ahmad T,Shen K,Felker GM,Rajagopal S

    更新日期:2017-04-01 00:00:00

  • Echocardiographic assessment of right ventricular function in experimental pulmonary hypertension.

    abstract::Echocardiography, a non-invasive and cost-effective method for monitoring cardiac function, is commonly used for evaluation and pre-clinical diagnostics of pulmonary hypertension (PH). Previous echocardiographic studies in experimental models of PH are fragmentary in terms of the evaluation of right ventricle (RV) fun...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1177/2045894019841987

    authors: Zhu Z,Godana D,Li A,Rodriguez B,Gu C,Tang H,Minshall RD,Huang W,Chen J

    更新日期:2019-04-01 00:00:00

  • Nonmuscle myosin light chain kinase activity modulates radiation-induced lung injury.

    abstract::Radiotherapy as a primary treatment for thoracic malignancies induces deleterious effects, such as acute or subacute radiation-induced lung injury (RILI). Although the molecular etiology of RILI is controversial and likely multifactorial, a potentially important cellular target is the lung endothelial cytoskeleton tha...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1086/686491

    authors: Wang T,Mathew B,Wu X,Shimizu Y,Rizzo AN,Dudek SM,Weichselbaum RR,Jacobson JR,Hecker L,Garcia JG

    更新日期:2016-06-01 00:00:00

  • Impact of histologic chorioamnionitis on pulmonary hypertension and respiratory outcomes in preterm infants.

    abstract::We aimed to evaluate the association between the presence of histologic chorioamnionitis (HC) and development of pulmonary hypertension (PH) during neonatal intensive care unit (NICU) stay. Data of preterm infants born at 32 weeks of gestation or less were reviewed. The development of PH and other respiratory outcomes...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1177/2045894018760166

    authors: Yum SK,Kim MS,Kwun Y,Moon CJ,Youn YA,Sung IK

    更新日期:2018-04-01 00:00:00

  • Addition of a bilateral access form of peripheral extracorporeal membrane oxygenation rescued a patient with idiopathic pulmonary arterial hypertension who developed circulatory collapse immediately after childbirth.

    abstract::Pregnancy is not advised for patients with Pulmonary hypertension (PH) because of high risk of PH crisis. However, some patients have undiagnosed idiopathic pulmonary arterial hypertension (IPAH) before pregnancy. Upfront combination therapy has high efficacy for patients with IPAH. However, some patients are unable t...

    journal_title:Pulmonary circulation

    pub_type:

    doi:10.1177/2045894020910140

    authors: Adachi S,Shimokata S,Yoshida M,Imai R,Nakano Y,Okumura N,Suzuki S,Murohara T,Kondo T

    更新日期:2020-02-28 00:00:00

  • Obesity-related pulmonary arterial hypertension in rats correlates with increased circulating inflammatory cytokines and lipids and with oxidant damage in the arterial wall but not with hypoxia.

    abstract::Obesity is causally linked to a number of comorbidities, including cardiovascular disease, diabetes, renal dysfunction, and cancer. Obesity has also been linked to pulmonary disorders, including pulmonary arterial hypertension (PAH). It was long believed that obesity-related PAH was the result of hypoventilation and h...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1086/678510

    authors: Irwin DC,Garat CV,Crossno JT Jr,MacLean PS,Sullivan TM,Erickson PF,Jackman MR,Harral JW,Reusch JE,Klemm DJ

    更新日期:2014-12-01 00:00:00

  • Bioavailability, pharmacokinetics, and safety of riociguat given as an oral suspension or crushed tablet with and without food.

    abstract::Riociguat is approved for the treatment of pulmonary arterial hypertension and chronic thromboembolic pulmonary hypertension. Some patients have difficulty swallowing tablets; therefore, 2 randomized, nonblinded, crossover studies compared the relative bioavailability of riociguat oral suspensions and immediate-releas...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1086/685020

    authors: Saleh S,Frey R,Becker C,Unger S,Wensing G,Mück W

    更新日期:2016-03-01 00:00:00

  • Endothelial nitric oxide synthase genotype is associated with pulmonary hypertension severity in left heart failure patients.

    abstract::The biological mechanisms behind the development of pulmonary hypertension in the setting of left heart failure (HF-PH), including combined pre- and post-capillary pulmonary hypertension (Cpc-PH), remains unclear. This study aimed to use candidate polymorphisms in nitric oxide synthase (NOS) genes to explore the role ...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1177/2045894018773049

    authors: Duarte JD,Kansal M,Desai AA,Riden K,Arwood MJ,Yacob AA,Stamos TD,Cavallari LH,Zamanian RT,Shah SJ,Machado RF

    更新日期:2018-04-01 00:00:00

  • Impact of four times daily dosing of oral treprostinil on tolerability and daily dose achieved in pulmonary hypertension.

    abstract::Oral treprostinil (TRE) is a prostacylin that is approved for the treatment of patients with pulmonary arterial hypertension (PAH). Dosing is approved for two or three times daily (t.i.d.); however, adverse effects, including gastrointestinal-related symptoms, may limit the ability to reach optimal doses. We report ou...

    journal_title:Pulmonary circulation

    pub_type:

    doi:10.1177/2045893217744512

    authors: Coons JC,Bunner C,Ishizawar DC,Risbano MG,Rivera-Lebron B,Mathier MA,Chan SY,Simon MA

    更新日期:2018-01-01 00:00:00

  • Characterization of altered patterns of endothelial progenitor cells in sickle cell disease related pulmonary arterial hypertension.

    abstract::Endothelial dysfunction plays an important role in the pathogenesis of pulmonary arterial hypertension (PAH) in sickle cell disease (SCD). A variety of evidence suggests that circulating endothelial progenitor cells (EPCs) play an integral role in vascular repair. We hypothesized that SCD patients with PAH are deficie...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.4103/2045-8932.94834

    authors: Anjum F,Lazar J,Zein J,Jamaleddine G,Demetis S,Wadgaonkar R

    更新日期:2012-01-01 00:00:00

  • Chemical and biological assessment of metal organic frameworks (MOFs) in pulmonary cells and in an acute in vivo model: relevance to pulmonary arterial hypertension therapy.

    abstract::Pulmonary arterial hypertension (PAH) is a progressive and debilitating condition. Despite promoting vasodilation, current drugs have a therapeutic window within which they are limited by systemic side effects. Nanomedicine uses nanoparticles to improve drug delivery and/or reduce side effects. We hypothesize that thi...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1177/2045893217710224

    authors: Mohamed NA,Davies RP,Lickiss PD,Ahmetaj-Shala B,Reed DM,Gashaw HH,Saleem H,Freeman GR,George PM,Wort SJ,Morales-Cano D,Barreira B,Tetley TD,Chester AH,Yacoub MH,Kirkby NS,Moreno L,Mitchell JA

    更新日期:2017-07-01 00:00:00

  • Molecular and functional significance of Ca(2+)-activated Cl(-) channels in pulmonary arterial smooth muscle.

    abstract::Increased peripheral resistance of small distal pulmonary arteries is a hallmark signature of pulmonary hypertension (PH) and is believed to be the consequence of enhanced vasoconstriction to agonists, thickening of the arterial wall due to remodeling, and increased thrombosis. The elevation in arterial tone in PH is ...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章,评审

    doi:10.1086/680189

    authors: Leblanc N,Forrest AS,Ayon RJ,Wiwchar M,Angermann JE,Pritchard HA,Singer CA,Valencik ML,Britton F,Greenwood IA

    更新日期:2015-06-01 00:00:00

  • Effects of exercise rehabilitation training on patients with pulmonary hypertension.

    abstract::Pulmonary hypertension (PH) comprises a group of pathophysiological syndromes characterized by elevated pulmonary artery pressure and pulmonary vascular resistance, which lead to right ventricular overload, and even right heart failure. PH has a poor prognosis and severely leads to a decline in quality of life. Histor...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章,评审

    doi:10.1177/2045894020937129

    authors: Zhang X,Xu D

    更新日期:2020-07-07 00:00:00

  • Impact of diabetes on survival and right ventricular compensation in pulmonary arterial hypertension.

    abstract::Insulin resistance is highly prevalent in pulmonary arterial hypertension (PAH) patients. However, the long-term impact of diabetes mellitus (DM) on survival in PAH is unclear. Insulin resistance and DM are associated with left ventricular steatosis and dysfunction, but whether the right ventricle (RV) might be affect...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1086/675994

    authors: Benson L,Brittain EL,Pugh ME,Austin ED,Fox K,Wheeler L,Robbins IM,Hemnes AR

    更新日期:2014-06-01 00:00:00

  • A high-yield isolation and enrichment strategy for human lung microvascular endothelial cells.

    abstract::Vasculopathies, characterized by the formation of fragile and abnormal microvessels, are associated with the severity of many chronic lung diseases, including pulmonary fibrosis, emphysema/chronic obstructive pulmonary disease, systemic sclerosis, and hypertension. However, the study of human lung vasculature has been...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1177/2045893217702346

    authors: Gaskill C,Majka SM

    更新日期:2017-03-27 00:00:00

  • Dysregulation of ubiquitin-proteasome pathway and apolipoprotein A metabolism in sickle cell disease-related pulmonary arterial hypertension.

    abstract::Pulmonary arterial hypertension (PAH) is a major complication of sickle cell disease (SCD). Low levels of apolipoprotein A1 (Apo-A1) have been implicated in the development of PAH in SCD. We speculate that lower levels of Apo-A1 are related to dysregulation of the ubiquitin-proteasome pathway (UPP). Of 36 recruited pa...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1086/674763

    authors: Anjum F,Lazar J,Soh J,Albitar M,Gowda S,Hussain MM,Wadgaonkar R

    更新日期:2013-12-01 00:00:00

  • BK channels in rat and human pulmonary smooth muscle cells are BKα-β1 functional complexes lacking the oxygen-sensitive stress axis regulated exon insert.

    abstract::A loss of K+ efflux in pulmonary arterial smooth muscle cells (PASMCs) contributes to abnormal vasoconstriction and PASMC proliferation during pulmonary hypertension (PH). Activation of high-conductance Ca2+-activated (BK) channels represents a therapeutic strategy to restore K+ efflux to the affected PASMCs. However,...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1086/688838

    authors: Detweiler ND,Song L,McClenahan SJ,Versluis RJ,Kharade SV,Kurten RC,Rhee SW,Rusch NJ

    更新日期:2016-12-01 00:00:00

  • A prescribed walking regimen plus arginine supplementation improves function and quality of life for patients with pulmonary arterial hypertension: a pilot study.

    abstract::Current evidence suggests that exercise training is beneficial in pulmonary arterial hypertension (PAH). Unfortunately, the standard supervised, hospital-based programs limit patient accessibility to this important intervention. Our proof-of-concept study aimed to provide insight into the usefulness of a prescribed wa...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1177/2045893217743966

    authors: Brown MB,Kempf A,Collins CM,Long GM,Owens M,Gupta S,Hellman Y,Wong V,Farber M,Lahm T

    更新日期:2018-01-01 00:00:00

  • Medication adherence, hospitalization, and healthcare resource utilization and costs in patients with pulmonary arterial hypertension treated with endothelin receptor antagonists or phosphodiesterase type-5 inhibitors.

    abstract::Adherence to therapy for pulmonary arterial hypertension is essential to optimize patient outcomes, but data on real-world adherence to different pulmonary arterial hypertension drug classes are limited. This retrospective database analysis evaluated relationships between adherence, hospitalization, and healthcare cos...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1177/2045894019880086

    authors: Frantz RP,Hill JW,Lickert CA,Wade RL,Cole MR,Tsang Y,Drake W 3rd

    更新日期:2020-03-18 00:00:00

  • Gender, sex hormones and pulmonary hypertension.

    abstract::Most subtypes of pulmonary arterial hypertension (PAH) are characterized by a greater susceptibility to disease among females, although females with PAH appear to live longer after diagnosis. While this "estrogen paradoxȍ of enhanced female survival despite increased female susceptibility remains a mystery, recent pro...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章,评审

    doi:10.4103/2045-8932.114756

    authors: Austin ED,Lahm T,West J,Tofovic SP,Johansen AK,Maclean MR,Alzoubi A,Oka M

    更新日期:2013-04-01 00:00:00

  • Particulate matter disrupts human lung endothelial cell barrier integrity via Rho-dependent pathways.

    abstract::Increased exposure to ambient particulate matter (PM) is associated with elevated morbidity and mortality in patients with cardiopulmonary diseases and cancer. We and others have shown that PM induces lung microvascular barrier dysfunction which potentially enhances the systemic toxicity of PM. However, the mechanisms...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1086/689906

    authors: Wang T,Shimizu Y,Wu X,Kelly GT,Xu X,Wang L,Qian Z,Chen Y,Garcia JGN

    更新日期:2017-07-01 00:00:00

  • Pulmonary thromboembolism with computed tomography defined chronic thrombus is associated with higher mortality.

    abstract::With the advancement of computed tomography pulmonary angiography, differentiating between acute and chronic thrombus in pulmonary embolism has become more feasible. However, whether pulmonary embolism with chronic thrombus contributes to a higher mortality than pulmonary embolism with acute thrombus remains undetermi...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1177/2045894020905510

    authors: Chang HY,Chang WT,Chen PW,Lin CC,Hsu CH

    更新日期:2020-05-01 00:00:00

  • Serum soluble suppression of tumorigenicity-2 level associates with severity of pulmonary hypertension associated with uncorrected atrial septal defect.

    abstract::Uncorrected atrial septal defect undergoes right ventricle chronic volume overload which may lead to pulmonary hypertension and Eisenmenger Syndrome. The soluble suppression of tumorigenicity-2 is a left ventricle strain biomarker; however, its role in right ventricle strain is unclear. This study aimed to investigate...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1177/2045894020915832

    authors: Pratama RS,Hartopo AB,Anggrahini DW,Dewanto VC,Dinarti LK

    更新日期:2020-05-26 00:00:00

  • Idiopathic hypereosinophilic syndrome with pulmonary hypertension.

    abstract::Hypereosinophilic syndrome is a myeloproliferative disorder characterized by persistent eosinophilia with involvement of multiple organs. The occurrence of severe pulmonary hypertension (PH) in the setting of hypereosinophilic syndrome is very uncommon. A 43-year-old man with documented idiopathic hypereosinophlic syn...

    journal_title:Pulmonary circulation

    pub_type:

    doi:10.1177/2045894018793999

    authors: Zhang L,Peng X,Adhikari BK,Li B,Liu Q,Mikeladze J,Zhang W

    更新日期:2019-01-01 00:00:00

  • Comparative effectiveness of oral prostacyclin pathway drugs on hospitalization in patients with pulmonary hypertension in the United States: a retrospective database analysis.

    abstract::Two oral medications targeting the prostacyclin pathway are available to treat pulmonary arterial hypertension in the United States: oral treprostinil and selexipag. We compared real-world hospitalization in patients receiving these medications. A retrospective administrative claims study was conducted using the Optum...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1177/2045894020911831

    authors: McConnell JW,Tsang Y,Pruett J,Iii WD

    更新日期:2020-11-10 00:00:00

  • An observational study of inhaled-treprostinil respiratory-related safety in patients with pulmonary arterial hypertension.

    abstract::Inhaled treprostinil (Tyvaso) has been shown to be a safe and effective addition to pulmonary arterial hypertension (PAH) oral therapies; however, the respiratory-related safety profile of inhaled treprostinil required further elucidation in the setting of routine clinical care. The objectives of this study were to ch...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1086/688059

    authors: Zamanian RT,Levine DJ,Bourge RC,De Souza SA,Rosenzweig EB,Alnuaimat H,Burger C,Mathai SC,Leedom N,DeAngelis K,Lim A,De Marco T

    更新日期:2016-09-01 00:00:00

  • Pulmonary capillary hemangiomatosis: the role of invasive cardiopulmonary exercise testing.

    abstract::Pulmonary capillary hemangiomatosis (PCH) is a rare form of pulmonary arterial hypertension (PAH) characterized by pulmonary capillary proliferation and pseudoinvasion of collagenous septal structures. PCH is often accompanied by veno-occlusive changes and pulmonary hypertensive arterial remodeling. The clinical and p...

    journal_title:Pulmonary circulation

    pub_type:

    doi:10.1086/682227

    authors: DuBrock HM,Kradin RL,Rodriguez-Lopez JM,Channick RN

    更新日期:2015-09-01 00:00:00

  • Riociguat use in sickle cell related chronic thromboembolic pulmonary hypertension: A case series.

    abstract::Adults with sickle cell disease can develop pulmonary hypertension from a multitude of etiologies. Classified as WHO Group 5, there are no therapies approved for the treatment of sickle cell disease-pulmonary hypertension. Thromboembolic disease is prevalent in sickle cell disease and can lead to pulmonary hypertensio...

    journal_title:Pulmonary circulation

    pub_type:

    doi:10.1177/2045894018791802

    authors: Weir NA,Conrey A,Lewis D,Mehari A

    更新日期:2018-10-01 00:00:00

  • Inspiratory capacity is not altered in operable chronic thromboembolic pulmonary hypertension.

    abstract::Pathological alterations of inspiratory capacity (IC) have been observed in pulmonary hypertension. However, the clinical significance of IC in operable chronic thromboembolic pulmonary hypertension (CTEPH) without other pulmonary diseases remains unknown. CTEPH patients scheduled for pulmonary endarterectomy were pro...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1177/2045893217709763

    authors: Richter MJ,Gall H,Wittkämper G,Seeger W,Mayer E,Ghofrani HA,Guth S,Reichenberger F

    更新日期:2017-04-01 00:00:00

  • EXPRESS: Left ventricular early diastolic strain rate detected by two-dimensional speckle tracking echocardiography and disease severity in pre-capillary pulmonary hypertension.

    abstract:: ...

    journal_title:Pulmonary circulation

    pub_type: 杂志文章

    doi:10.1177/2045894019865158

    authors: Liu BY,Wu WC,Zeng QX,Liu ZH,Tian Y,Niu LL,Cheng XL,Luo Q,Zhao Z,An CH,Huang L,Wang H,He J,Xiong CM

    更新日期:2019-07-03 00:00:00