Analysis of risk factors for deep vein thrombosis after spinal infection surgery and construction of a nomogram preoperative prediction model.

Objective: To investigate the differences in postoperative deep venous thrombosis (DVT) between patients with spinal infection and those with non-infected spinal disease; to construct a clinical prediction model using patients' preoperative clinical information and routine laboratory indicators to predict the likelihood of DVT after surgery.

Method: According to the inclusion criteria, 314 cases of spinal infection (SINF) and 314 cases of non-infected spinal disease (NSINF) were collected from January 1, 2016 to December 31, 2021 at Xiangya Hospital, Central South University, and the differences between the two groups in terms of postoperative DVT were analyzed by chi-square test. The spinal infection cases were divided into a thrombotic group (DVT) and a non-thrombotic group (NDVT) according to whether they developed DVT after surgery.

Advances in the study of biomarkers related to bone metastasis in breast cancer.

Breast cancer is by far the most common malignancy in females. And bone is the most common site of distant metastasis in breast cancer, accounting for about 65 to 75% of all metastatic breast cancer patients.Bone metastasis is an important factor affecting the prognosis of breast cancer.

A predictive model for early clinical diagnosis of spinal tuberculosis based on conventional laboratory indices: A multicenter real-world study.

Background: Early diagnosis of spinal tuberculosis (STB) remains challenging. The aim of this study was to develop a predictive model for the early diagnosis of STB based on conventional laboratory indicators.

Method: The clinical data of patients with suspected STB in four hospitals were included, and variables were screened by Lasso regression.

Clinical application value of metagenomic next-generation sequencing in the diagnosis of spinal infections and its impact on clinical outcomes.

This study aimed to evaluate the impact of precise treatment administered according to the results of metagenomic next-generation sequencing (mNGS) on the clinical outcomes of patients with spinal infections. In this multicenter retrospective study, the clinical data of 158 patients with spinal infections who were admitted to Xiangya Hospital Central South University, Xiangya Boai Rehabilitation Hospital, The First Hospital of Changsha, and Hunan Chest Hospital from 2017 to 2022 were reviewed. Among these 158 patients, 80 patients were treated with targeted antibiotics according to the mNGS results and were assigned to the targeted medicine (TM) group.

Analysis of the diagnostic efficacy of the QuantiFERON-TB Gold In-Tube assay for preoperative differential diagnosis of spinal tuberculosis.

Background: Differential diagnosis of spinal tuberculosis is important for the clinical management of patients, especially in populations with spinal bone destruction. There are few effective tools for preoperative differential diagnosis in these populations. The QuantiFERON-TB Gold In-Tube (QFT-GIT) test has good sensitivity and specificity for the diagnosis of tuberculosis, but its efficacy in preoperative diagnosis of spinal tuberculosis has rarely been investigated.

Diagnostic efficiency of metagenomic next-generation sequencing on spinal infection and prognosis.

Objectives: Spinal infection is a rare infectious disease that is difficult to treat. The incidence of spinal infection is on the rise with the experiential use of antibiotics, the increasing incidence of drug-resistant bacteria, and the improvement of detection techniques. Traditional detection methods have limitations such as low sensitivity and long time-consuming in the diagnosis of spinal infection.

Synthesis of 2,3-Dihydrothieno(2,3-b)quinolines and Thieno(2,3-b)- quinolines via an Unexpected Domino Aza-MBH/Alkylation/Aldol Reaction.

An efficient, mild, and convenient method for the preparation of 2,3-dihydrothieno(2,3-b)quinolines and thieno(2,3-b)-quinolines via an unexpected domino aza-Morita-Baylis-Hillman/alkylation/aldol reaction has been developed. The plausible mechanisms for the unexpected reaction are also given.

Enantioselective Construction of Polyfunctionalized Spiroannulated Dihydrothiophenes via a Formal Thio [3+2] Cyclization.

A formal thio [3+2] cyclization catalyzed by Takemoto's organocatalyst has been reported for the construction of optically active spiroannulated dihydrothiophenes in high yields with excellent regio-, chemo-, diastereo-, and enantioselectivities.

Neurophysiological and Neuropsychological Correlates of Subconscious Auditory Processing During Anesthesia and Their Implications in Anesthesia Awareness.

Like any other unusual state of consciousness, the condition of anesthesia remains a mystery, especially regarding the information processing events of the brain. Evoked potentials are the only known way to understand the neurophysiological events of brain in this condition. Auditory evoked potentials (AEPs) have been used as a measure of the depth of anesthesia during the intra-operative process.

Facile domino access to chiral mono-, bi-, and tricyclic 2,3-dihydrofurans.

The asymmetric domino Michael-S(N)2 reaction of various 1,3-dicarbonyl compounds to α-bromonitroalkenes is described for the first time, employing readily available cinchona-derived bifunctional thioureas as organocatalysts. The novel transformations were highly regio-, chemo-, diastereo-, and enantioselective, which simultaneously gave the chiral tricyclic 2,3-dihydrofurans, bicyclic 2,3-dihydrofurans, and tetrasubstituted 2,3-dihydrofurans with two vicinal chiral carbon centers.

The organocatalytic two-step synthesis of diversely functionalized tricyclic tetrazoles.

The diversely functionalized tricyclic tetrazoles were synthesised from readily available substrates via intramolecular 1,3-dipolar cycloaddition as the key step in good yields (53-78% yield for two steps) with high enantioselectivities (81-99% ee).

Efficient kinetic resolution of racemic 3-nitro-2H-chromene derivatives catalyzed by Takemoto's organocatalyst.

Efficient kinetic resolution of racemic 3-nitro-2H-chromenes by bifunctional thiourea afforded optically active (R)-3-nitro-2H-chromene derivatives with moderate to good enantioselectivities, which simultaneously gave the multifunctional 3,4-diphenyl-3a-nitrobenzopyrano-[3,4-c]-pyrrolidine-1,1-dicarboxylate derivatives with four vicinal chiral carbon centers.

Efficient method for the synthesis of functionalized pyrazoles by catalyst-free one-pot tandem reaction of nitroalkenes with ethyl diazoacetate.

The one-pot synthesis of multisubstituted pyrazole derivatives was achieved via catalyst-free 1,3-dipolar cycloaddition of ethyl diazoacetate and nitroalkenes as the key step and elimination of the leaving group (NO(2) or Br) followed by intramolecular proton transfer with satisfactory yields.

A convenient synthesis of (S)-H4-BINOL and its derivatives via hydrogenation of monoesters of BINOL.

A new multigram synthesis of chiral (S)-H(4)-BINOL and its derivatives in moderate to high yield (up to 83% total yield) via monoesterification of (S)-BINOL, hydrogenation, and saponification reaction was described. The two new monomethylated (S)-H(4)-BINOL obtained may be useful materials in asymmetric catalysis.

Short synthesis of the CDEF ring system of lactonamycin.

[reaction: see text]. A synthesis of the CDEF fragment of lactonamycin is achieved in eight steps (six pots) from the known and readily available anhydride 4 via a Diels-Alder reaction between tricycle 13 and 2,3-dimethylbenzoquinone.