Abstract:
BACKGROUND:Lymph flow depends on both the rate of lymph production by tissues and the extent of passive and active pumping. Here we aim to characterize the passive mechanical properties of a lymphangion in both mid-lymphangion and valve segments to assess regional differences along a lymphangion, as well as evaluating its structural composition. METHODS AND RESULTS:Mesenteric lymphatic vessels were isolated and cannulated in a microchamber for pressure-diameter (P-D) testing. Vessels were inflated from 0 to 20 cmH(2)O at a rate of 4 cmH(2)O/min, and vessel diameter was continuously tracked, using an inverted microscope, video camera, and custom LabVIEW program, at both mid-lymphangion and valve segments. Isolated lymphatic vessels were also pressure-fixed at 2 and 7 cmH(2)O and imaged using a nonlinear optical microscope (NLOM) to obtain collagen and elastin structural information. We observed a highly nonlinear P-D response at low pressures (3-5 cmH(2)O), which was modeled using a three-parameter constitutive equation. No significant difference in the passive P-D response was observed between mid-lymphangion and valve regions. NLOM imaging revealed an inner elastin layer and outer collagen layer at all locations. Lymphatic valve leaflets were predominantly elastin with thick axially oriented collagen bands at the insertion points. CONCLUSIONS:We observed a highly nonlinear P-D response at low pressures (3-5 cmH(2)O) and developed the first constitutive equation to describe the passive P-D response for a lymphangion. The passive P-D response did not vary among regions, in agreement with the composition of elastin and collagen in the lymphatic wall.
journal_name
Lymphat Res Bioljournal_title
Lymphatic research and biologyauthors
Rahbar E,Weimer J,Gibbs H,Yeh AT,Bertram CD,Davis MJ,Hill MA,Zawieja DC,Moore JE Jrdoi
10.1089/lrb.2011.0015subject
Has Abstractpub_date
2012-12-01 00:00:00pages
152-63issue
4eissn
1539-6851issn
1557-8585journal_volume
10pub_type
杂志文章abstract:BACKGROUND:Secondary lymphedema, resulting from damage to lymphatic vessels, is a common sequela following surgical removal of lymph nodes for cancer. Current therapeutics for treating lymphedema are limited and further research on underlying causes is warranted. Published studies on molecular mechanisms of lymphedema ...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2016.0042
更新日期:2017-06-01 00:00:00
abstract:: Background: Multiple staging systems for classifying the severity of lymphedema exist. The International Society of Lymphology (ISL) stage is considered standard for clinical reporting, but the relationship between clinical and functional/imaging stage remains poorly defin...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2018.0014
更新日期:2019-06-01 00:00:00
abstract:BACKGROUND:Lymphedema is the abnormal accumulation of protein-rich fluid in the interstitial space. Primary lymphedema is a rare genetic condition with both autosomal dominant and autosomal recessive modes of inheritance. Three genes, FLT4 (VEGFR3), FOXC2, and SOX18 cause varying forms of primary lymphedema. In industr...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2008.1524
更新日期:2008-01-01 00:00:00
abstract::Hemangiomas of infancy are very common tumors, but they are heterogeneous in their behavior. A small, but significant, subset causes medical complications or permanent disfigurement, but due to their heterogeneity, there is no appropriate "one size fits all" approach to management. In addition, the rapid evolution of ...
journal_title:Lymphatic research and biology
pub_type: 杂志文章,评审
doi:10.1089/153968503322758120
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND:Previous studies suggest that rhythmic compression of the abdomen (abdominal lymphatic pump techniques, LPT) enhances immunity and resistance to infectious disease, but direct evidence of this has not been documented. In this study, the thoracic duct of eight anesthetized mongrel dogs was catheterized, so th...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2007.1001
更新日期:2007-01-01 00:00:00
abstract::Abstracts Background: Arm lymphedema after breast cancer surgery affects women both from physical and psychological points of view. Lymphedema leads to adipose tissue deposition. Liposuction and controlled compression therapy (CCT) reduces the lymphedema completely. METHODS AND RESULTS:Sixty female patients with arm ...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2016.0035
更新日期:2017-03-01 00:00:00
abstract:: Background: Lymphedema is a disorder in which lymph accumulates in the interstitial spaces due to poor lymphatic flow resulting from hypoplasia or aplasia of the lymphatic vessels, or to morpho-functional alterations that impair lymphatic flow. Lymphedema is a debilitating...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2019.0052
更新日期:2020-06-01 00:00:00
abstract:: Introduction: Mass drug administration and morbidity management and disability prevention (MMDP) though considered as two pillars of global program for elimination of filariasis, implementation of MMDP was disregarded in several endemic countries. Limb hygiene is the main ...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2019.0058
更新日期:2020-12-01 00:00:00
abstract::The knowledge of humoral and cellular factors retained in tissues affected by ineffective lymph transport is necessary to comprehend the pathological mechanisms of the evolving changes in the extremity. In this article, we report our observations on changes in the protein composition of lymph in obstructive lymphedema...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/153968503768330265
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND:Tissue dielectric constant (TDC) and spot bioimpedance measurement (BIA) have a role in the assessment of tissue composition changes in breast cancer-related lymphedema (BCRL). Our aims were to determine whether TDC and spot BIA measures could detect inter-limb differences in BCRL, explore the relationship b...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2014.0032
更新日期:2015-03-01 00:00:00
abstract:BACKGROUND:In arm lymphedema secondary to axillary surgery and radiotherapy (breast cancer-related lymphedema), the swelling is largely epifascial and lymph flow per unit epifascial volume is impaired. The subfascial muscle compartment is not measurably swollen despite the iatrogenic damage to its axillary drainage pat...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/153968503321642615
更新日期:2003-01-01 00:00:00
abstract:OBJECTIVE:The aim of the article was to assess risk factors and to analyze methods applied in the prevention and treatment of lower limb edema in pregnant women with a particular focus on compression therapy and exercise. MATERIALS AND METHODS:Fifty-four women during the early 24-hour period following delivery were as...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2016.0038
更新日期:2017-06-01 00:00:00
abstract:BACKGROUND:Lymphedema may affect patients' health-related quality of life (HRQoL) and thus a disease-specific questionnaire is needed. The Lymphedema Quality of life Inventory (LyQLI) has been tested for reliability and validity. The purpose of this study was to test the LyQLI for responsiveness and sensitivity. METHO...
journal_title:Lymphatic research and biology
pub_type: 杂志文章,多中心研究
doi:10.1089/lrb.2017.0048
更新日期:2018-06-01 00:00:00
abstract:BACKGROUND:The putrefaction factor is one of the biggest problems when undertaking unembalmed cadaveric tissue dissections for lymphatic vessel mapping. METHODS:One female bilateral breast and anterior upper torso from an unembalmed human cadaver was studied over an 8-week period. Multiple prefrozen domestic ice brick...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2008.1020
更新日期:2009-01-01 00:00:00
abstract:: Background: Surgical excision and/or radiation targeting of regional lymph nodes are an essential component in the clinical management of cancer. Importantly, a more accurate understanding of lymphatic anatomy could enable refinement of present treatment strategies. Given ...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2019.0007
更新日期:2020-04-01 00:00:00
abstract:: Background: Conservative nonsurgical treatment has traditionally been applied to lymphedema. Early surgical procedures were invasive and disfiguring and their long-term success was often limited. In contrast, contemporary surgical techniques are much less invasive and have...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2018.0038
更新日期:2019-08-01 00:00:00
abstract:BACKGROUND:Lymphedema leads to adipose tissue deposition. Water-fat magnetic resonance imaging (MRI) can quantify and localize fat and water. The presence of excess fat and excess water/muscle in the subfascial compartment of the lymphedematous limb has not been investigated before. The aim of this study was to investi...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2017.0042
更新日期:2018-04-01 00:00:00
abstract:BACKGROUND:Primary idiopathic lymphedema is an uncommon condition that typically affects the lower extremities. Patients have a malformed lymphatic system that causes subcutaneous fluid and adipose deposition. Rarely, the disease also has been described in the upper extremities. The purpose of this study was to investi...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2017.0085
更新日期:2019-02-01 00:00:00
abstract:: Background: Platelet-rich plasma (PRP) is an autologous concentrated preparation of platelets characterized by lymphangiogenetic and tissue-repairing effects. Although PRP has been safely used in many different fields, there is no clinical study regarding the use of PRP in...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2019.0064
更新日期:2020-10-01 00:00:00
abstract::Pediatric hepatic angiosarcoma is a very rare malignant vascular tumor. A few cases have shown pediatric hepatic angiosarcoma occurring on a background of preexisting vascular lesions. We report the case of a newborn girl who presented extensive limbs and upper trunk cutaneous mixed vascular malformations at birth. Th...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2009.0034
更新日期:2010-09-01 00:00:00
abstract::Despite the fact that the central nervous system parenchyma does not contain lymphatics, extracranial lymphatic vessels play a very important role in volumetric cerebrospinal fluid (CSF) transport. The most important extracranial location at which lymphatics gain access to CSF is in the nasal submucosa after CSF conve...
journal_title:Lymphatic research and biology
pub_type: 杂志文章,评审
doi:10.1089/15396850360495682
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND:The composition of breast cancer-related lymphedema (BCRL) has been shown to evolve from the initial accumulation of fluid to the development of fibrotic lesions and abnormal fat deposition. Therefore, precise and reliable assessments of BCRL are required to develop accurate staging and management. Although ...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2012.0020
更新日期:2013-06-01 00:00:00
abstract:BACKGROUND:Lymphatic stomata are small lymphatic openings in the serosal membrane that communicate with the serosal cavity. Although these stomata have primarily been studied in experimental mammals, little is known concerning the presence and properties of lymphatic stomata in the adult human pleura. Thus, adult human...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2014.0009
更新日期:2015-06-01 00:00:00
abstract:BACKGROUND:Corneal lymphangiogenesis (LG) and hemangiogenesis (HG) accompany many diseases after inflammatory, infectious, traumatic or chemical insults. They also contribute to transplant rejection. It is known that corneal transplants in infants or children have a higher rejection rate than in adults. However, it has...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2011.0005
更新日期:2011-01-01 00:00:00
abstract:BACKGROUND:A relative inability to capture a sufficiently large patient population in any one geographic location has traditionally limited research into rare diseases. METHODS AND RESULTS:Clinicians interested in the rare disease lymphangioleiomyomatosis (LAM) have worked with the LAM Treatment Alliance, the MIT Medi...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2009.0028
更新日期:2010-03-01 00:00:00
abstract:: Background: Mesenteric lymph (ML) has been implicated in the development of multiple organ dysfunction syndrome in critical illness. Extracellular RNAs play a role in cell-to-cell communication during physiological and disease processes but they are rarely studied in ML. W...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2018.0044
更新日期:2019-10-01 00:00:00
abstract:: Background: The use of bioimpedance spectroscopy (BIS) for the detection of unilateral upper limb lymphedema is growing. Currently, normatively determined diagnostic thresholds using bioimpedance are available for females only. It is unclear if they are suitable for males ...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2018.0051
更新日期:2020-02-01 00:00:00
abstract:BACKGROUND:It has recently become apparent that the lymph pump is an electrical entity that rivals the heart in complexity. Many interesting currents have been demonstrated by voltage clamping isolated lymphatic smooth muscle cells, but until now the role of these currents in the intact syncitium has not been studied. ...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2007.5104
更新日期:2007-01-01 00:00:00
abstract:BACKGROUND:We performed experiments to test whether isolated lymphatic vessels would remain viable after overnight long-distance shipment. METHODS AND RESULTS:Freshly isolated segments of rat mesenteric lymphatic vessels were placed into tubes filled by chilled D-MEM/F12 supplemented with antibiotics and shipped via o...
journal_title:Lymphatic research and biology
pub_type: 杂志文章
doi:10.1089/lrb.2010.0007
更新日期:2010-12-01 00:00:00
abstract:OBJECTIVE:This study sought to evaluate the effect of elastic compression, functional compressive bandaging, and kinesiotherapy on blood flow of the upper limb with lymphedema secondary to the treatment of breast cancer. METHODS:This was a randomized blind crossover clinical trial with a washout period of 7 days betwe...
journal_title:Lymphatic research and biology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1089/lrb.2016.0022
更新日期:2017-03-01 00:00:00