Impact of pneumatic compression therapy on lymphatics in head and neck lymphedema (Conference Presentation)

Author(s):  
John C. Rasmussen ◽  
Melissa B. Aldrich ◽  
Banghe Zhu ◽  
J. Rodney Morrow ◽  
Carolina Guitierrez ◽  
...  
2019 ◽  
Vol 160 (4) ◽  
pp. 622-626 ◽  
Author(s):  
Carolina Gutierrez ◽  
Ron J. Karni ◽  
Syed Naqvi ◽  
Melissa B. Aldrich ◽  
Banghe Zhu ◽  
...  

Ten head and neck cancer survivors diagnosed with head and neck lymphedema (HNL) were imaged using near-infrared fluorescence lymphatic imaging (NIRFLI) prior to and immediately after an initial advance pneumatic compression device treatment and again after 2 weeks of daily at-home use. Images assessed the impact of pneumatic compression therapy on lymphatic drainage. Facial composite measurement scores assessed reduction/increase in external swelling, and survey results were obtained. After a single pneumatic compression treatment, NIRFLI showed enhanced lymphatic uptake and drainage in all subjects. After 2 weeks of daily treatment, areas of dermal backflow disappeared or were reduced in 6 of 8 subjects presenting with backflow. In general, reductions in facial composite measurement scores tracked with reductions in backflow and subject-reported improvements; however, studies are needed to determine whether longer treatment durations can be impactful and whether advanced pneumatic compression can be used to ameliorate backflow characteristic of HNL.


2019 ◽  
Vol 476 (24) ◽  
pp. 3705-3719 ◽  
Author(s):  
Avani Vyas ◽  
Umamaheswar Duvvuri ◽  
Kirill Kiselyov

Platinum-containing drugs such as cisplatin and carboplatin are routinely used for the treatment of many solid tumors including squamous cell carcinoma of the head and neck (SCCHN). However, SCCHN resistance to platinum compounds is well documented. The resistance to platinum has been linked to the activity of divalent transporter ATP7B, which pumps platinum from the cytoplasm into lysosomes, decreasing its concentration in the cytoplasm. Several cancer models show increased expression of ATP7B; however, the reason for such an increase is not known. Here we show a strong positive correlation between mRNA levels of TMEM16A and ATP7B in human SCCHN tumors. TMEM16A overexpression and depletion in SCCHN cell lines caused parallel changes in the ATP7B mRNA levels. The ATP7B increase in TMEM16A-overexpressing cells was reversed by suppression of NADPH oxidase 2 (NOX2), by the antioxidant N-Acetyl-Cysteine (NAC) and by copper chelation using cuprizone and bathocuproine sulphonate (BCS). Pretreatment with either chelator significantly increased cisplatin's sensitivity, particularly in the context of TMEM16A overexpression. We propose that increased oxidative stress in TMEM16A-overexpressing cells liberates the chelated copper in the cytoplasm, leading to the transcriptional activation of ATP7B expression. This, in turn, decreases the efficacy of platinum compounds by promoting their vesicular sequestration. We think that such a new explanation of the mechanism of SCCHN tumors’ platinum resistance identifies novel approach to treating these tumors.


Anaesthesia ◽  
2000 ◽  
Vol 55 (8) ◽  
pp. 814-814 ◽  
Author(s):  
R. M. Dravid ◽  
M. Popat
Keyword(s):  

1998 ◽  
Vol 23 (3) ◽  
pp. 268-269
Author(s):  
Liloglou ◽  
Scholes ◽  
Spandidos ◽  
Jones ◽  
Vaughan ◽  
...  

1998 ◽  
Vol 23 (4) ◽  
pp. 376-376
Author(s):  
Quak ◽  
Van Bokhorst ◽  
Klop ◽  
Van Leeuwen ◽  
Snow

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