Interaction of the lanthanide nitrates M(NO) (M = Gd, Eu) with methylcucurbit[5]uril (MeQ[5]) in the presence of transition metal chlorides (ZnCl and FeCl) in acidic media resulted in the isolation of the complexes [MeQ[5]Gd(HO)Cl Gd(HO)](ZnCl)∙Cl∙8.9H2O () and [MeQ[5]Eu(HO)Cl(HO)](FeCl) (). The molecular structures of and have been determined by single crystal X-ray crystallography, and reveal discrete complexes which are involved in dense stacking with adjacent MeQ[5]s linked via H-bonding and/or metal anions resulting in a supramolecular assembly.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
December 2024
Two helical Schiff base compounds (HTPA and HTPE) containing a triphenylamine (TPA) or tetraphenylethylene (TPE) scaffold were successfully synthesized and characterized. Both HTPA and HTPE exhibited typical aggregation-induced emission characteristics in the mixed solvent of THF/HO. The two compounds also showed high selectivity and sensitivity for the recognition of Cu over other ions in THF/HEPES (1:4, V/V, pH = 7.
View Article and Find Full Text PDFA supramolecular assembly was constructed based on the tetraphenylethylene derivatives (TPEs) and --cucurbit[10]uril (-Q[10]). Upon introduction of the dye Rhodamine B (RB) into the TPEs@-Q[10] assembly, an energy transfer process can occur from the TPEs@-Q[10] assembly to RB. Moreover, after the addition of Nile Red (NiR), a two-step sequential energy transfer process from the TPEs@-Q[10] assembly to RB and then to NiR can occur.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
March 2024
pH plays a crucial part in numerous chemical and physiological processes. In this work, a new perylene diimide derivative that acts as a pH-sensitive dye with Bay Area Carboxylic Acid functionality. The derivative utilizes the outstanding thermal, chemical and photochemical stability found in PDI materials and has remarkable UV-visible absorption and fluorescence emission qualities.
View Article and Find Full Text PDFThree different complexes, TMeQ[6]-TBT, Q[7]-TBT, and Q[8]-TBT are constructed by three different cucurbiturils and synthesized by guest melamine-cored Schiff bases (TBT) through outer-surface interaction and host-guest interactions. TBT forms a TMeQ[6]-TBT complex with TMeQ[6] through outer-surface interaction, while Q[7]-TBT and Q[8]-TBT form complexes with Q[7,8] through host-guest interactions. Among them, Q[7]-TBT is selected as a UV detector for the detection of silver ions (Ag).
View Article and Find Full Text PDFObjectives/hypothesis: To investigate how quickly an allergic rhinitis (AR) patients' symptoms will improve with sublingual immunotherapy (SLIT).
Study Design: Double-blind placebo study.
Methods: This is a multicenter, randomized, double-blind, placebo-controlled study of SLIT used to treat house dust mite-induced AR.
Objective: To examine maturational changes in expressions of Ophiocordyceps sinensis (O.sinensis) transition and transversion mutation genotypes in Cordyceps sinensis (C.sinensis) stroma.
View Article and Find Full Text PDFZhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
December 2011
Objective: To investigate the clinical efficacy of subcutaneous immunotherapy (SCIT) and sublingual immunotherapy (SLIT) with standardized house dust mite (HDM) extract for persistent allergic rhinitis (PER).
Methods: Ninety-eight patients with moderate to severe PER caused by HDM and who completed SCIT (Alutard SQ, ALK-Abell¨®) or SLIT (Chanllergen-Df drops, Wolwo Pharma) regimen for two years were enrolled in this open-label controlled study. The patients were divided into two groups: SCIT group consisted of 40 patients aged 7 to 57 years old [(19.
Objective: To examine the mutants of Ophiocordyceps sinensis (Os) in the stroma of premature Cordyceps sinensis (Cs).
Methods: Used MassARRAY single nucleotide polymorphism (SNP) MALDI-TOF mass spectrum genotyping, designed eight SNP extension primers on the basis of the scattered, multiple point mutations of known Os mutants within their internal transcribed spacer (ITS) segments, and examined the Os mutant genotypes relating to the GC-biased Os genotype (gb #AB067721) in premature Cs stroma.
Results: The two AT-biased genotypes and the GC-biased Os were simultaneously detected in premature Cs stroma.
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
June 2010
Objective: To investigate the safety profile of subcutaneous immunotherapy (SCIT) versus sublingual immunotherapy (SLIT) in patients with allergic rhinitis (AR) caused by house dust mites. The treatment compliance and related factors were also evaluated.
Methods: A total of 160 patients with AR were enrolled in this study and received either SCIT (Alutard SQ, ALK-Abelló) or SLIT (Chanllergen-Df drops, Wolwo Pharma).
Zhonghua Fu Chan Ke Za Zhi
May 2010
Objective: To evaluate the clinical value of ultrasonography detecting the poster urethrovesical angle (PUVA) in diagnosis of stress urinary incontinence (SUI).
Methods: From Jan. 2006 to Dec.
Objective: To investigate the roles of matrix metalloproteinase-9, -2 (MMP-9, 2), and tissue inhibitors of metalloproteinase-1, 2 (TIMP-1, 2) in pathogenesis of the accretio placenta.
Methods: The women with the placenta accrete were recruited and the placenta (23) and deciduas tissues (9) after labor were obtained, and the placenta (28) and deciduas (11) from women without the placenta accreta were obtained as control to get, too. The expressions of MMP-9, -2, TIMP-1, 2 in the placental and decidual tissues were analyzed by real-time PCR.
Objective: To investigate the mechanisms underlying the effect of selenium dioxide (SeO(2)) on the proliferation, apoptosis, and apoptosis-related gene expressions of Bcl-2 and p53 in 3 leukemia cell lines NB4, K562 and HL-60.
Methods: The three leukemia cell lines were treated with 3, 10 and 30 mmol/L SeO(2) and apoptosis detected by flow cytometry and analysis of p53 and Bcl-2 expressions.
Results: SeO(2) at 10 and 30 mmol/L could inhibit the proliferation of three leukemia cell lines.