Using New Vaginal Doses Evaluation System to Assess the Dose-Effect Relationship for Vaginal Stenosis After Definitive Radio(Chemo)Therapy for Cervical Cancer.

Objective: The study aims to investigate if a relationship exists between vaginal doses and vaginal stenosis (VS) using posterior-inferior border of symphysis (PIBS) points and the International Commission on Radiation Units-Rectum (ICRU-R) point evaluation system for definitive radio(chemo)therapy in locally advanced cervical cancer.

Methods And Materials: From a vaginal dose study in China, 351 patients were prospectively assessed. For every reference point of the PIBS system and ICRU-R point was calculated for all BT and summed with EBRT.

Successful treatment of a 19-year-old patient with locally advanced clear cell adenocarcinoma of the uterine cervix using recombinant human adenovirus type 5 (Oncorine) combined with chemoradiotherapy: a case report.

Clear cell adenocarcinoma (CCAC) of the uterine cervix is a rare histological subtype of cervical cancer. The optimal treatment paradigm for this tumor has not yet been established. In recent years, oncolytic viruses have become a promising strategy for cancer treatment.

Folic acid modified TPGS as a novel nano-micelle for delivery of nitidine chloride to improve apoptosis induction in Huh7 human hepatocellular carcinoma.

Background: The development of novel and effective drugs for targeted human hepatocellular carcinoma still remains a great challenge. The alkaloid nitidine chloride (NC), a component of a traditional Chinese medicine, has been shown to have anticancer properties, but doses at therapeutic levels have unacceptable side effects. Here we investigate folic acid modified D-α-tocopheryl polyethylene glycol 1000 succinate (TPGS-FA) as a potential carrier for controlled delivery of the drug.

Asymmetric Transfer Hydrogenation of rac-α-(Purin-9-yl)cyclopentones via Dynamic Kinetic Resolution for the Construction of Carbocyclic Nucleosides.

An asymmetric transfer hydrogenation via dynamic kinetic resolution of a broad range of rac- α-(purin-9-yl)cyclopentones was first developed. A series of cis-β-(purin-9-yl)cyclopentanols were obtained with up to 97% yield, >20/1 dr, and >99% ee. This also provides an efficient synthetic route to a variety of chiral carbocyclic nucleosides.

Cyclization Reaction of Donor-Acceptor Oxiranes with N,N'-Disubstituted Thioureas: A Domino Process to trans-Dihydropyrimidines.

An unprecedented cyclization reaction of donor-acceptor oxiranes with N,N'-disubstituted thioureas to construct trans-dihydropyrimidines is presented. Preliminary reaction mechanism studies demonstrated that the reaction underwent sequential cycloaddition/amine ester exchange/oxygen-sulfur exchange/desulfuration/Michael addition process. A wide range of trans-dihydropyrimidines were produced with high yields up to 94% by using this method.

Synthesis of Chiral Six-Membered Carbocyclic Purine Nucleosides via Organocatalytic Enantioselective [3 + 3] Annulation.

A direct route to chiral six-membered carbocyclic purine nucleoside analogues with three chiral stereocenters, including a chiral tetrasubstituted carbon center, via a highly enantioselective [3 + 3] annulation has been established. With the application of Takemoto's catalyst, various chiral six-membered carbocyclic purine nucleoside analogues were obtained in high yields (up to 89%) with moderate to good diastereoselectivities (up to 90:10 dr) and excellent enantioselectivities (92-98% ee). Furthermore, diverse chiral six-membered carbocyclic purine nucleoside analogues were generated by simple transformations.

Enantioselective Synthesis of Carbocyclic Nucleosides via Asymmetric [3 + 2] Annulation of α-Purine-Substituted Acrylates with MBH Carbonates.

An efficient route to chiral carbocyclic nucleoside analogues containing a quaternary stereocenter and a C═C double bond has been established via a highly enantioselective [3 + 2] annulation of Morita-Baylis-Hillman (MBH) carbonates with α-purine-substituted acrylates. With 20 mol % (S)-SITCP as the catalyst, various chiral carbocyclic nucleoside analogues with a quaternary stereocenter and a C═C double bond were obtained in high yields (up to 92%) with good diastereoselectivities (up to 10:1 dr) and excellent enantioselectivities (up to 96% ee). Furthermore, the corresponding products were subjected to diverse transformations to afford interesting and potentially useful chiral carbocyclic nucleosides.

Redetermination of μ-oxido-bis-[bis-(N,N-diethyl-hydroxyl-aminato)-oxido-vanadium(V)].

In comparison with the previous determination [Saussine, Mimoun, Mitschler & Fisher (1980 ▶). Nouv. J.

A three-dimensional supramolecular vanadium hydroxylamide complex: poly[di-mu2-aqua-bis(hydroxylamido)-mu3-malonato-oxidosodiumvanadium(V)].

The crystal structure of the title compound, [NaV(C3H2O4)(NH2O)2O(H2O)2], is built up of NaO6 and VO5N2 polyhedra connected through malonate bridges. The NaO6 octahedra are linked by edge sharing in the equatorial plane to form one-dimensional infinite chains. These chains are linked together by the malonate bridges to form two-dimensional layers.

[Root canal therapy opportunity in replanted teeth due to injury.].

Purpose: To investigate the opportunity of different root canal therapies in replantation of tooth due to injury.

Methods: 49 cases with teeth luxation were randomly divided into three groups. In group A, the pulp was removed before replanted, and calcium hydroxide was filled in root canals and condensated routinely after half a year.