Search

Abstract Chirality and luminescence are important for both chemistry and biology, which are highly influenced by aggregation. In this work, a pair of metalated tetraphenylethylene(TPE)‐based organic cage enantiomers are reported, which feature a quadrangular prismatic cage structure. These homochiral cages exhibit concentration‐dependent chiral behaviors alongside a propensity for thermodynamic aggregation. Aggregation caused quench effect is found for these cages accompanying the increasing of the concentrations. When a poor solvent is added to produce a kinetical aggregation, the aggregation‐annihilation circular dichroism and aggregation‐induced emission behaviors are observed for these enantiomeric cages. By comparing these observations with the photophysical behaviors of a pair of structurally similar organic molecular enantiomers, the unique photophysical properties observed are intricately linked to the metal‐integrated TPE‐functionalized cage structures.

AIM: To explore the relationship between the changes of serum circFTO and microRNA-141-3p(miR-141-3p)levels and the different disease stages of diabetes retinopathy.METHODS: A total of 198 patients with type 2 diabetes admitted to our hospital from October 2019 to November 2022 were collected as the study subjects, the patients were grouped into non diabetes retinopathy(NDR)group(70 cases), non proliferative diabetes retinopathy(NPDR)group(66 cases)and proliferative diabetes retinopathy(PDR)group(62 cases)according to different stages; meantime, 67 volunteers with normal physical examination results were collected as the control group. The levels of serum circFTO and miR-141-3p were detected by real-time fluorescent quantitative PCR(qRT-PCR); Pearson correlation analysis was used to examine the correlation between the serum circFTO, miR-141-3p and various indicators in patients with diabetes retinopathy; multivariate Logistic regression analysis was applied to explore the influencing factors of diabetes retinopathy.RESULTS: CircFTO, systolic blood pressure(SBP), and diastolic blood pressure(DBP)in PDR group were higher than those in control group, NDR group and NPDR group, while miR-141-3p and high-density lipoprotein cholesterol(HDL-C)were lower than those in control group, NDR group and NPDR group(P

AIM: To explore the clinical efficacy of different anti-vascular endothelial growth factor(VEGF)drugs in the treatment of diabetic macular edema(DME), and analyze their relationship with optical coherence tomography(OCT)classification.METHODS: A total of 45 DME patients treated with ranibizumab(admitted to our hospital from February 2020 to February 2022)were selected as the ranibizumab group, and 45 DME patients treated with conbercept during the same period were selected as the conbercept group. The ranibizumab group was treated with retinal photocoagulation combined with ranibizumab, and the conbercept group was treated with retinal photocoagulation combined with conbercept. The improvement of symptoms(improvement time of macular edema, time of retinal thickness returning to normal, disappearance time of neovascularization and absorption time of fundus hemorrhage), levels of serum interleukin-6(IL-6)and VEGF, central macular thickness(CMT), best corrected visual acuity(BCVA), and complications were compared between the two groups, and the relationship between their clinical efficacy and different OCT types were analyzed.RESULTS: There was no significant difference in the improvement time of macular edema, time of retinal thickness returning to normal, disappearance time of neovascularization and absorption time of fundus hemorrhage between the two groups(P>0.05); After treatment, the values of IL-6, VEGF and BCVA in the two groups were significantly lower than those before treatment(P0.05); compared with before treatment, CMT was significantly decreased in both groups after treatment(P0.05); there were significant differences in the total effective rate among patients with serous retinal detachment(SRD), cystoid macular edema(CME)and diffuse retinal thickening(DRT; P

Abstract To develop a simple and general method for improving the circularly polarized luminescence (CPL) performances of materials is of great significance. In this work, two pairs of CPL‐active homochiral metal–organic frameworks (MOFs) P/M‐Et and P/M‐Et(Cd) with eta topology are reported. In comparison to the reported isomorphic Zn‐imidazolate MOFs P‐Me and M‐Me, both luminescence dissymmetry factor (glum) and photoluminescence quantum yields (ΦPL) of P‐Et and M‐Et are largely improved by simply changing the methyl group to an ethyl group of ligands in P‐Et and M‐Et. Furthermore, the |glum| values are significantly amplified up to 0.015 from 0.0057 by introducing the non‐luminescent halogenated aromatics, while an enhanced fluorescence efficiency is observed simultaneously (from 27.2% to 47.3%). The figure of merit value is about 40 times larger than that of P‐Me and M‐Me. Similarly, the CPL performances of P/M‐Et(Cd) are improved by about five times after encapsulating fluorobenzene molecules. This work represents a new and simple method for developing CPL‐active MOF materials.

AIM: To observe the clinical efficacy of anti-VEGF combined with laser in treatment of retinal vein occlusion with macular edema.METHODS: Totally 62 patients with retinal vein occlusion complicated with macular edema were diagnosed in the Ophthalmology Department of our hospital during 2017-03/09 were randomly divided into three groups. Group A was treated by retinal laser alone, and groups B and C were treated with intravitreal injection of conbercept and rezuzumab respectively before retinal laser a follow-up of 6mo was conducted to observe the clinical efficacy of three groups.RESULTS: After treatment, the retinal thickness(CMT)in macular center of the three groups was significantly lower than that before treatment, and the CMT of groups B and C were lower than that of group A(PP>0.05). At 6mo after treatment, the total effective rate of the three groups was 44%, 86% and 86%, respectively(PPCONCLUSION: Vitreous injection of conbercept or ranibizumab combined with retinal laser in treatment of retinal vein occlusion with macular edema can effectively reduce macular edema and improve vision. Conbercept or ranibizumab has similar effects.

Host–guest chemistry in hollow coordination cages can be exploited for a range of applications, but is often limited by inner cavity dimensions. Here, Schmitt and co-workers fabricate supramolecular keplerates that possess ultra-large cross-sectional diameters and are composed of multiple sub-cages.

Objectives To explore the intentions of working-age internal migrants concerning their place of residence in old age and the relevant influencing factors.Method A cross-sectional survey was conducted in the 17 districts of Shanghai, China in 2013. Through multi-stage stratified sampling with probability proportional to size, 7968 internal migrants (aged 15–64 years) were selected and interviewed individually face to face. The primary outcome concerned the intended place of residence in old age of internal migrants living in Shanghai. Information was collected on demographic characteristics, health insurance, economic condition and participation in social activities. Multinomial logistic regression was performed to analyse the factors influencing migrants’ intentions concerning their place of residence in old age.Results A total of 7927 working-age migrants with complete data were analysed. Of these, 57.0% intended to live in their hometown in old age, 17.7% planned to remain in Shanghai and 25.3% were undecided. Those respondents who were male, less educated, from rural areas or Western China, living in rental houses or who had left family members behind in their hometowns were more likely to choose their hometown as their intended residence in old age (p

AIM:To investigate the visual status and risk factors of elementary and middle school students in urban area of Chenzhou in order to provide evidence for vision protection. METHODS: Visual acuity was examined in 11 286 students that were selected by multistage sampling. Influencing factors were investigated by questionnaire. Chi-square test and multivariate logistic regression was used to analyze the associations. RESULTS: In the elementary and middle school students, the hypopsia rate was 47.50% in Chenzhou; hypopsia rate in the elementary school was 34.01%, the rate in junior school was 62.10%; the main type of hypopsia was myopia(70.01%); myopia rate in pupils was 22.57%, myopia rate in junior middle school students was 48.84%.The main risk factors for myopia were: age, grade, parents with myopia, long homework time, reading more than 1h continuously, long time watching videos and obesity. Protective factors were: recessing out of classrooms and outdoor activities.CONCLUSION: Hypopsia in youth is the result of genetic and environmental factors. Early protections, forming good visual habits will help protect children's vision.

AIM: To investigate the correlation between carotid artery disease and fundus arteriosclerosis in patients with cerebral infarction. METHODS: Totally 120 patients with acute cerebral infarction were randomly divided into two groups. The patients were diagnosed with bilateral carotid artery and non-mydriatic fundus camera. Fouty-two patients transient ischaemic attack(TIA)underwent cerebral angiography. The data were recorded for analysis. RESULTS: The degree of fundus arteriosclerosis in patients with cerebral infarction was positively correlated with blood pressure(r=0.361, P=0.015). There was a significant correlation between retinal arteriosclerosis grade and carotid atherosclerosis(r=0.392, P=0.011). The degree of fundus arteriosclerosis was correlated with cerebral arteriolar lesion, higher than it with carotid artery disease(r=0.465, 0.392, P=0.037). CONCLUSION: Carotid arteriosclerosis, fundus arteriosclerosis and cerebral arteriolar lesions in patients with cerebral infarction have a significant correlation with hypertension, and fundus arterial examination has important clinical value in judging cerebral arteriosclerosis.

AIM:To evaluate the effects and safety of intravitreal injection of Ranibizumab on noninfectious uveitic macular edema(UME). METHODS: This was an open and prospective study without control trial. Seventeen eyes from 17 patients with UME diagnosed by fundus fluorescein angiography(FFA)and optical coherence tomography(OCT)were enrolled in this study. Before the injection, best-corrected visual acuity(BCVA)of early treatment of diabetic retinopathy study(ETDRS)and central macular thickness(CMT)measured by OCT were examined. All affected eyes were treated with intravitreal ranibizumab 0.05mL(0.5mg). The BCVA, CMT and intraocular pressure(IOP)were compared with baseline at 2, 4, 8 and 12wk after treatment. Related complications were recorded. RESULTS: The median BCVA before treatment was 57(P25 and P75 were 52.5 and 64.5, respectively). The median CMT was 524μm(P25 and P75 were 365.5 and 571, respectively). At 2, 4, 8, and 12wk after injection, the median BCVA of the affected eyes was 76(P25 and P75 were 71 and 80, respectively), 81(P25 and P75 were 78.5 and 83, respectively), 82(P25 and P75 were 68.5 and 84, respectively), and 82(P25 and P75 are 78.5 and 83, respectively). The Friedman M test showed that there were differences in the BCVA in the four groups at different follow-up times, that was, BCVA after injection was higher than before injection(χ2=47.58, P25 and P75 were 249.5 and 374.5, respectively),231μm(P25 and P75 were 212.5 and 267), 219μm(P25 and P75 were 210.5 and 365.5,respectively), and 217μm(P25 and P75 were 201.5 and 366.5,respectively). The Friedman M test showed that there was difference in the CMT in the four groups at different follow-up times(χ2=40.33, PCONCLUSION: Intravitreal ranibizumab is a safe and effective approach for noninfectious uveitic macular edema in the short term, which can significantly improve visual acuity and reduce CMT in patients refractory to or intolerant of standard corticosteroid/ immunomodulatory therapy.

Objective(s): Intestinal ischemia-reperfusion is a major problem, which may lead to multiorgan failure and death. The aim of this study was to evaluate the protective effects of dexmedetomidine on cell proliferation, antioxidant system, cell death, and structural integrity in intestinal injury induced by ischemia-reperfusion in rats. Materials and Methods: Animals were randomized into three groups: group A, sham-operated or control; group B, intestinal ischemia/reperfusion (IR); and group C, intestinal IR pretreated with 50 μg of dexmedetomidine. Intestine tissue was collected from all rats 30 min after desufflation, and fresh frozen for histological and biochemical evaluation. Results: The intestinal tissue of group B rats showed a significant decrease in the antioxidant enzyme activities. However, these enzyme activities were improved by the administration of dexmedetomidine. Inhibiting the protein expression of MCP7, PAR2, P-JAK, P-STAT1, and P-STAT3 proved the protective effect of dexmedetomidine. The immunohistochemical staining revealed its protective effect by maintaining the normal structural integrity, less caspase-3 immuno reactivity, and increased cell proliferation count in the intestinal tissues. Conclusions: Intraperitoneal injection of dexmedetomidine significantly protected intestine IR injury in rats by inhibiting the inflammatory response, intestinal epithelial apoptosis, and maintaining structural integrity of intestinal cells.

Tumors frequently exhibit loss of tumor suppressor genes or allelic gains of activated oncogenes. A significant proportion of cancer susceptibility loci in the mouse show somatic losses or gains consistent with the presence of a tumor susceptibility or resistance allele. Thus, allele-specific somatic gains or losses at loci may demarcate the presence of resistance or susceptibility alleles. The goal of this study was to determine if previously mapped susceptibility loci for colorectal cancer show evidence of allele-specific somatic events in colon tumors.We performed quantitative genotyping of 16 single nucleotide polymorphisms (SNPs) showing statistically significant association with colorectal cancer in published genome-wide association studies (GWAS). We genotyped 194 paired normal and colorectal tumor DNA samples and 296 paired validation samples to investigate these SNPs for allele-specific somatic gains and losses. We combined analysis of our data with published data for seven of these SNPs.No statistically significant evidence for allele-specific somatic selection was observed for the tested polymorphisms in the discovery set. The rs6983267 variant, which has shown preferential loss of the non-risk T allele and relative gain of the risk G allele in previous studies, favored relative gain of the G allele in the combined discovery and validation samples (corrected p-value = 0.03). When we combined our data with published allele-specific imbalance data for this SNP, the G allele of rs6983267 showed statistically significant evidence of relative retention (p-value = 2.06×10(-4)).Our results suggest that the majority of variants identified as colon cancer susceptibility alleles through GWAS do not exhibit somatic allele-specific imbalance in colon tumors. Our data confirm previously published results showing allele-specific imbalance for rs6983267. These results indicate that allele-specific imbalance of cancer susceptibility alleles may not be a common phenomenon in colon cancer.

The title molecule, C16H15I2N3O2, adopts an E configuration about the C=N bond. The dihedral angle between the two benzene rings is 6.4 (2)°. An intramolecular O—H...N hydrogen bond occurs. In the crystal, molecules are linked through intermolecular N—H...O hydrogen bonds, forming chains propagating in the c-axis direction.