scholarly journals Binding indocyanine green to human serum albumin potentially enhances the detection of sentinel lymph nodes. An initial step for facilitating the detection of first-station nodes in penile and other urological cancers

2021 ◽  
Author(s):  
Marcin Markuszewski ◽  
Magdalena Buszewska-Forajta ◽  
Małgorzata Artymowicz ◽  
Wojciech Połom ◽  
Marek Roslan ◽  
...  
Keyword(s):  
Human Serum Albumin ◽  
Serum Albumin ◽  
Lymph Nodes ◽  
Indocyanine Green ◽  
Sentinel Node ◽  
Human Serum ◽  
Initial Step ◽  
Surgical Oncology ◽  
Fluorescence Measurements

IntroductionSurgical oncology strives to remove the primary cancer tumor together with its local lymphatic tissue. One of the techniques improving the staging of lymph nodes is sentinel node biopsy. The most common agent used in SNB is indocyanine green (ICG). Indocyanine green is characterized by its high affinity for human serum albumin (HSA). In practice, the visualization of the sentinel node is enhanced by attaching a relatively large carrier to the ICG molecule. The aim of this study was to investigate whether the covalent linking of ICG to a nanocolloid would extend the time of detection of the dye as it binds to HSA, assessed by fluorescence measurements in vitro.Material and methodsThe influence of the molar concentration of ICG on its ability to form a complex with HSA was investigated. The dye luminescence was measured, with an increasing amount of dye in the presence of a constant concentration of HSA. The stability of the ICG:HSA complex was also investigated.ResultsThe binding of ICG and human protein in a solution ratio of 3 : 1 made it possible to detect the ICG luminescence with better and prolonged visibility. In the case of the two lowest ratios, complex formation was not observed. The use of ICG bound to a nanocolloid based on human serum albumin increases the luminescence of the HSA:ICG complex up to 98%.ConclusionsProperly selected proportions of human albumin protein and ICH allowed higher and longer luminescence to be achieved. Nevertheless, further studies are necessary to establish the optimal concentration ratio.

scholarly journals Structural and electronic determinants of flavonoid binding to human serum albumin: an extensive ligand-based study

RSC Advances ◽  
2016 ◽  
Vol 6 (79) ◽  
pp. 75014-75022 ◽  
Author(s):  
Hrvoje Rimac ◽  
Željko Debeljak ◽  
Davor Šakić ◽  
Tin Weitner ◽  
Mario Gabričević ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Human Serum Albumin ◽  
Serum Albumin ◽  
Human Serum ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
Flavonoid Aglycones ◽  
Fluorescence Measurements

The most prominent features responsible for binding of flavonoid aglycones to the IIA region of human serum albumin (HSA) were determined based onin vitrofluorescence measurements and density functional theory calculations.

scholarly journals Indocyanine green can stand alone in detecting sentinel lymph nodes in cervical cancer

2018 ◽  
Vol 46 (12) ◽  
pp. 4885-4897 ◽  
Author(s):  
Qurat Ulain ◽  
Lu Han ◽  
Qian Wu ◽  
Lanbo Zhao ◽  
Qi Wang ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Human Serum Albumin ◽  
Serum Albumin ◽  
Lymph Nodes ◽  
Indocyanine Green ◽  
Human Serum ◽  
Detection Rate ◽  
Sentinel Lymph Nodes ◽  
Detection Rates ◽  
Pubmed Database

Objectives The effectiveness of indocyanine green (ICG) dye for detecting sentinel lymph nodes (SLNs) in cervical cancer compared with other tracers is unknown. This study aimed to assess the validity of ICG dye in detecting SLNs in cervical cancer preoperatively. Methods We performed a literature search for identifying eligible articles from PubMed database using the search terms “cervical cancer”, “sentinel lymph node”, “indocyanine green”, “blue dyes”, “human serum albumin”, and “technetium-99 radiocolloid”. We performed a meta-analysis. Comparison of the overall, bilateral, and unilateral detection rates of the different tracers was the primary goal. Comparison of the false-negative rate among the tracers was the secondary goal. Results Only eight retrospective studies including 661 patients were included. ICG versus combinations of three other tracers showed significantly higher bilateral and unilateral detection rates, but no difference in the overall rate of detecting SLNs. ICG had a higher bilateral detection rate than blue dye and technetium-99. Absorbing human serum albumin into ICG as a lymphatic tracer did not show a difference in detection rate compared with ICG alone. Conclusions ICG is superior and better than other tracers, and absorbing human serum albumin as a lymphatic tracer is not required in patients with cervical cancer.

Nof2206Probing the interaction of memantine, an important Alzheimer's drug, with human serum albumin: In silico and In vitro approach

2021 ◽  
pp. 116888
Author(s):  
Fahad A. Alhumaydhi ◽  
Mohammad Abdullah Aljasir ◽  
Abdullah S.M. Aljohani ◽  
Suliman A. Alsagaby ◽  
Ameen S.S. Alwashmi ◽  
...  
Keyword(s):  
Human Serum Albumin ◽  
Serum Albumin ◽  
Human Serum ◽  
In Silico

scholarly journals Synthesis and In Vitro Assessment of pH-Sensitive Human Serum Albumin Conjugates of Pirarubicin

2020 ◽  
Vol 14 (1) ◽  
pp. 22
Author(s):  
Kenji Tsukigawa ◽  
Shuhei Imoto ◽  
Keishi Yamasaki ◽  
Koji Nishi ◽  
Toshihiko Tsutsumi ◽  
...  
Keyword(s):  
Human Serum Albumin ◽  
Serum Albumin ◽  
Human Serum ◽  
Coupling Reaction ◽  
Synthetic Polymer ◽  
Ph Sensitive ◽  
Acidic Ph ◽  
Polymer Conjugate ◽  
Acidic Conditions

In a previous study, we reported on the development of a synthetic polymer conjugate of pirarubicin (THP) that was formed via an acid-labile hydrazone bond between the polymer and the THP. However, the synthetic polymer itself was non-biodegradable, which could lead to unexpected adverse effects. Human serum albumin (HSA), which has a high biocompatibility and good biodegradability, is also a potent carrier for delivering antitumor drugs. The objective of this study was to develop pH-sensitive HSA conjugates of THP (HSA-THP), and investigate the release of THP and the cytotoxicity under acidic conditions in vitro for further clinical development. HSA-THP was synthesized by conjugating maleimide hydrazone derivatives of THP with poly-thiolated HSA using 2-iminothiolane, via a thiol-maleimide coupling reaction. We synthesized two types of HSA-THP that contained different amounts of THP (HSA-THP2 and HSA-THP4). Free THP was released from both of the HSA conjugates more rapidly at an acidic pH, and the rates of release for HSA-THP2 and HSA-THP4 were similar. Moreover, both HSA-THPs exhibited a higher cytotoxicity at acidic pH than at neutral pH, which is consistent with the effective liberation of free THP under acidic conditions. These findings suggest that these types of HSA-THPs are promising candidates for further development.

The in Vitro Anti-HIV Efficacy of Negatively Charged Human Serum Albumin Is Antagonized by Heparin

1997 ◽  
Vol 13 (8) ◽  
pp. 677-683 ◽  
Author(s):  
P.J. SWART ◽  
C.S. SUN ◽  
M.E. KUIPERS ◽  
C. ASUNCION ◽  
S. JOSEPHS ◽  
...  
Keyword(s):  
Human Serum Albumin ◽  
Serum Albumin ◽  
Human Serum ◽  
Anti Hiv

scholarly journals Kinetic study of the photochemical changes of (ZZ)-bilirubin IX α bound to human serum albumin. Demonstration of (EZ)-bilirubin IX α as an intermediate in photochemical changes from (ZZ)-bilirubin IX α to (EZ)-cyclobilirubin IX α

1985 ◽  
Vol 226 (1) ◽  
pp. 251-258 ◽  
Author(s):  
S Itoh ◽  
S Onishi
Keyword(s):  
Human Serum Albumin ◽  
Serum Albumin ◽  
Kinetic Study ◽  
Human Serum ◽  
Photochemical Reaction ◽  
Relative Rate ◽  
Significant Preference ◽  
Geometrical Isomers ◽  
Relative Rate Constants

The present study was performed to elucidate why the photochemical reaction of (ZZ)-bilirubin bound to human serum albumin is singularly selective, and only one of the two (EZ)- and (ZE)-bilirubins, the (ZE)-isomer, is produced. In a kinetic study of the photochemical reaction in vitro, the sum of the relative rate constants of photochemical transformation of (EZ)-bilirubin into both (EZ)-cyclobilirubin and (ZZ)-bilirubin, with a significant preference for the former, was proved to be considerably larger than that of the transformation of (ZZ)-bilirubin into (EZ)-bilirubin. Therefore only one of the geometrical isomers, namely (ZE)-bilirubin, is apparently formed. It was concluded that (EZ)-bilirubin photochemically undergoes (EZ)-cyclization, i.e. structural photoisomerization, while bound to its high-affinity site on human serum albumin, and is an intermediate in the transformation of (ZZ)-bilirubin into (EZ)-cyclobilirubin.

Detection of the Communication Site by Indocyanine Green Adsorbed to Human Serum Albumin Fluorescence During Surgery for a Pleuroperitoneal Communication

2021 ◽  
Author(s):  
Daisuke Kimura ◽  
Ikuo Fukuda ◽  
Takeshi Fujita ◽  
Reiichi Murakami ◽  
Norio Nakamura ◽  
...  
Keyword(s):  
Human Serum Albumin ◽  
Serum Albumin ◽  
Indocyanine Green ◽  
Human Serum ◽  
Near Infrared ◽  
Thoracoscopic Surgery ◽  
Good Method ◽  
Pleuroperitoneal Communication ◽  
Fluorescence Images ◽  
One Year

Abstract A pleuroperitoneal communication is a serious complication for patients undergoing continuous ambulatory peritoneal dialysis (CAPD). Video-assisted thoracoscopic surgery is performed using indocyanine green adsorbed to human serum albumin fluorescence to identify the communication because human serum albumin reinforces fluorescence images. A patient diagnosed with a pleuroperitoneal communication was referred to our department and underwent surgery. To detect the communication, a dialysate mixture that contained indocyanine green and human serum albumin was injected from the CAPD catheter. Real-time fluorescence images were able to clearly show a bleb-like lesion with a near-infrared spectroscopy camera, and the site was repaired. The patient had no recurrence at one-year follow-up. This method might be good method for pleuroperitoneal communication surgery.

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