Results 171 to 180 of about 1,298,773 (390)

Methods for the determination of submicro quantities of total nitrogen, ammonia, amino nitrogen, amides, peptides, adenylic acid, and nitrates [PDF]

open access: yes, 1939
In 1935 one of us described micromethods for ammonia, urea, total nitrogen, uric acid, creatinine, and allantoin (1). These methods are adapted for the analysis of 1 to 2 ml. aliquots of dilute solutions, e.g. 0.1 mg. per cent of ammonia or urea, and for
Borsook, Henry, Dubnoff, Jacob W.
core  

Novel Less Toxic, Lymphoid Tissue‐Targeted Lipid Nanoparticles Containing a Vitamin B5‐Derived Ionizable Lipid for mRNA Vaccine Delivery

open access: yesAdvanced Healthcare Materials, Volume 14, Issue 7, March 14, 2025.
The top‐performing lipid nanoparticle, incorporating a novel ionizable lipid derived from vitamin B5, demonstrates high mRNA transfection efficiency, low toxicity, favorable stability, targeted delivery to lymphoid tissues, and high immunogenicity, showing promise as a carrier for mRNA vaccines for infectious diseases and cancer.
Soyeon Yoo   +11 more
wiley   +1 more source

Salt‐Compact Albumin as a New Pure Protein‐based Biomaterials: From Design to In Vivo Studies

open access: yesAdvanced Healthcare Materials, Volume 14, Issue 7, March 14, 2025.
A new class of materials built entirely of native albumin protein is designed using a simple protocol based on salt‐assisted compaction, breaking with current crosslinking strategies. This green process leads, surprisingly, to water‐insoluble handable materials with high preservation of their native protein structures and Young's modulus close to that ...
Eya Aloui   +19 more
wiley   +1 more source

Kidney Stone Dissolution By Tetherless, Enzyme‐Loaded, Soft Magnetic Miniature Robots

open access: yesAdvanced Healthcare Materials, EarlyView.
Wireless magnetic robots are developed for kidney stone dissolution. The robots navigate through a urinary tract model from bladder and ureter to renal pelvis with the help of external magnetic fields. The filaments are loaded with urease enzyme which catalyzes urea to carbon dioxide and ammonia, thereby increasing pH to basic regime and supporting ...
Afarin Khabbazian   +15 more
wiley   +1 more source

Structure of the proton-gated urea channel from the gastric pathogen Helicobacter pylori. [PDF]

open access: yes, 2013
Half the world's population is chronically infected with Helicobacter pylori, causing gastritis, gastric ulcers and an increased incidence of gastric adenocarcinoma.
Chen, Chiung-Kuang   +6 more
core  

Synthetic Bilirubin‐Based Nanomedicine Protects Against Renal Ischemia/Reperfusion Injury Through Antioxidant and Immune‐Modulating Activity

open access: yesAdvanced Healthcare Materials, Volume 14, Issue 7, March 14, 2025.
BX‐001N, a polyethylene glycol‐conjugated bilirubin 3α nanoparticle, is the first GMP‐grade, synthetic bilirubin‐based nanomedicine. It effectively attenuates acute renal injury, facilitates subacute renal recovery, and suppresses chronic fibrosis after renal ischemia/reperfusion injury via anti‐oxidant and immune‐modulating activity.
Ji‐Jing Yan   +13 more
wiley   +1 more source

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