Objective To compare and analyze the impact of intraocular higher-order aberrations and total ocular higher-order aberrations on visual quality after the implantation of different types of multifocal intraocular lenses(MIOL),in order to provide personalized MIOL selection recommendations for patients.Methods A total of 107 patients(107 eyes)with age-related cataract were selected and divided into the SBL-3,MF15,ZMB00,and Zeiss809 groups based on the type of MIOL implanted.Uncorrected distance visual acuity(UCDVA),best-corrected distance visual acuity(BCDVA),best-corrected near visual acuity(BCNVA),optical parameters and wavefront aberrations were compared 3 months postop-eratively.Results Preoperatively,there were no statistically significant differences in any optical parameters or visual acuity among the four groups(all P＞0.05).At three months postoperatively,there were no significant differences in UCD-VA,BCDVA,BCNVA,corneal aberration,or intraocular spherical aberration among the four groups(all P＞0.05).How-ever,significant differences were observed in the predicted visual acuity at 100％,20％,and 9％contrast(100％VA,20％VA,9％VA),streller ratio(SR),modulation transfer function cutoff frequency(MTF cutoff),intraocular coma,intraocu-lar trefoil,total higher-order aberrations,and the average modulation transfer function height values(MTF AH)of the en-tire eye across various spatial frequencies showed significant differences(all P＜0.05).Pairwise comparisons showed that the ZMB00 and Zeiss809 groups had significantly better 100％VA,20％VA,9％VA,SR,MTF cutoff,and MTF AH,and sig-nificantly lower intraocular coma,intraocular trefoil,and total higher-order aberrations than the SBL-3 group(all P＜0.05).The MF15 group only had significantly lower intraocular trefoil than the SBL-3 group(P＜0.05).Correlation analy-sis results at 3 months postoperatively showed that in the SBL-3 and MF15 groups,UCDVA(logMAR)was positively corre-lated with the objective scattering index and negatively correlated with 100％VA,20％VA,9％VA,SR,and MTF cutoff(all P＜0.05).MTF AH was negatively correlated with intraocular coma and total higher-order aberrations,and positively cor-related with intraocular spherical aberration(all P＜0.05).In the ZMB00 and Zeiss809 groups,MTF AH was negatively cor-related with intraocular coma,intraocular trefoil,and total higher-order aberrations(all P＜0.05),but showed no correla-tion with intraocular spherical aberration(all P＞0.05).Conclusion There are no differences in UCDVA,BCDVA,or BCNVA among patients implanted with the four types of MIOLs,but differences existed in objective visual quality.The ob-jective visual quality of ZMB00 and Zeiss809 is significantly better than that of SBL-3,making them the preferred choices for patients with high-quality visual demands;SBL-3 is suitable for basic demand scenarios;MF15,which is only superior to SBL-3 in terms of intraocular trefoil,can be a compromise option for those sensitive to trefoil aberration.

Objective To compare and analyze the impact of intraocular higher-order aberrations and total ocular higher-order aberrations on visual quality after the implantation of different types of multifocal intraocular lenses(MIOL),in order to provide personalized MIOL selection recommendations for patients.Methods A total of 107 patients(107 eyes)with age-related cataract were selected and divided into the SBL-3,MF15,ZMB00,and Zeiss809 groups based on the type of MIOL implanted.Uncorrected distance visual acuity(UCDVA),best-corrected distance visual acuity(BCDVA),best-corrected near visual acuity(BCNVA),optical parameters and wavefront aberrations were compared 3 months postop-eratively.Results Preoperatively,there were no statistically significant differences in any optical parameters or visual acuity among the four groups(all P＞0.05).At three months postoperatively,there were no significant differences in UCD-VA,BCDVA,BCNVA,corneal aberration,or intraocular spherical aberration among the four groups(all P＞0.05).How-ever,significant differences were observed in the predicted visual acuity at 100％,20％,and 9％contrast(100％VA,20％VA,9％VA),streller ratio(SR),modulation transfer function cutoff frequency(MTF cutoff),intraocular coma,intraocu-lar trefoil,total higher-order aberrations,and the average modulation transfer function height values(MTF AH)of the en-tire eye across various spatial frequencies showed significant differences(all P＜0.05).Pairwise comparisons showed that the ZMB00 and Zeiss809 groups had significantly better 100％VA,20％VA,9％VA,SR,MTF cutoff,and MTF AH,and sig-nificantly lower intraocular coma,intraocular trefoil,and total higher-order aberrations than the SBL-3 group(all P＜0.05).The MF15 group only had significantly lower intraocular trefoil than the SBL-3 group(P＜0.05).Correlation analy-sis results at 3 months postoperatively showed that in the SBL-3 and MF15 groups,UCDVA(logMAR)was positively corre-lated with the objective scattering index and negatively correlated with 100％VA,20％VA,9％VA,SR,and MTF cutoff(all P＜0.05).MTF AH was negatively correlated with intraocular coma and total higher-order aberrations,and positively cor-related with intraocular spherical aberration(all P＜0.05).In the ZMB00 and Zeiss809 groups,MTF AH was negatively cor-related with intraocular coma,intraocular trefoil,and total higher-order aberrations(all P＜0.05),but showed no correla-tion with intraocular spherical aberration(all P＞0.05).Conclusion There are no differences in UCDVA,BCDVA,or BCNVA among patients implanted with the four types of MIOLs,but differences existed in objective visual quality.The ob-jective visual quality of ZMB00 and Zeiss809 is significantly better than that of SBL-3,making them the preferred choices for patients with high-quality visual demands;SBL-3 is suitable for basic demand scenarios;MF15,which is only superior to SBL-3 in terms of intraocular trefoil,can be a compromise option for those sensitive to trefoil aberration.

Image 1.

In recent years, the bacteriophage Φ29 (Phi29) DNA polymerase has garnered increasing attention due to its high-fidelity amplification capacity at constant temperatures. To advance the industrial application of this type of isothermal polymerases, this study mined and characterized new enzymes from the microbial metagenome based on the known Phi29 DNA polymerase sequence. The results revealed that a new enzyme, Php29 DNA polymerase, was identified in the microbial metagenome with plants as the hosts. This enzyme exhibited higher strand displacement activity, with a 59.5% similarity to bacteriophage Φ29. Experimental validation demonstrated that the enzyme had 3'→5' exonuclease activity, and its amplification products can serve as substrates for further catalytic reactions. The discovery and validation of Php29 DNA polymerase gives insights into the future industrial application of isothermal polymerases.
DNA-Directed DNA Polymerase/metabolism* ; Bacillus Phages/genetics* ; Metagenome

Objective To establish a rat model of acute antibody-mediated rejection (AMR) in kidney transplantation and investigate the preventive effect of dihydroartemisinin (DHA) on acute AMR. Methods BN rats were used as donors and Lewis rats as recipients. Kidney transplantation was performed 2 weeks after skin transplantation for sensitization. After establishing the acute AMR model in rat kidney transplantation, the recipients of experimental groups included the syngeneic kidney transplantation group (6 rats), the allogeneic kidney transplantation group (6 rats), the syngeneic skin transplantation followed by kidney transplantation group (12 rats), and the allogeneic skin transplantation followed by kidney transplantation group (24 rats). The groups for investigating the preventive effect of DHA on acute AMR included the control group (allogeneic skin transplantation followed by kidney transplantation) and the DHA group (allogeneic skin transplantation followed by kidney transplantation + DHA), with 12 rats in each group. The survival time of recipient rats, serum donor-specific antibody (DSA) levels and graft pathological changes were used to identify the acute AMR model. On this basis, DSA levels, pathological changes in the transplant kidneys and peripheral blood B-cell levels were detected to assess the preventive effect of DHA on acute AMR. Results Compared with the allogeneic kidney transplantation group, skin transplantation sensitization significantly shortened the survival time of recipient rats (P<0.01). Compared with the syngeneic skin transplantation followed by kidney transplantation group, the allogeneic skin transplantation followed by kidney transplantation group showed significantly elevated serum DSA-IgG levels from 7 days after skin transplantation to 5 days after kidney transplantation (P<0.01), and significantly elevated DSA-IgM levels at 7 and 14 days after skin transplantation(all P<0.01). The transplant kidneys in the allogeneic skin transplantation followed by kidney transplantation group showed a small number of inflammatory cell infiltrations, tubular necrosis, capillaritis, and C4d deposition starting from 1 day after kidney transplantation, with these pathological changes worsening as the post-transplantation days increased. The kidney damage became significant starting from 3 days after transplantation. The above pathology manifestations were consistent with the characteristics of acute AMR. On the basis of establishing the acute AMR model, DHA treatment significantly prolonged the survival time of recipient rats (P<0.01) , and reduced serum DSA-IgG and DSA-IgM levels. DHA treatment significantly alleviated the pathological manifestations of acute AMR, including kidney damage, inflammatory cell infiltration, capillaritis and tubular necrosis, and also reduced C4d deposition in the transplant kidneys, inflammatory cell infiltration and peripheral blood CD19⁺ B-cell levels. Conclusions An acute AMR model is established by performing kidney transplantation 2 weeks after allogeneic skin transplantation in rats. It is discovered that DHA has immunosuppressive effects and may effectively prevent acute AMR, which provides a new strategy for the management of clinical AMR.

Alcoholic liver disease(ALD), a major cause of chronic liver disease worldwide, poses a serious threat to human health. Despite the availability of various drugs for treating ALD, their efficacy is often uncertain, necessitating the search for new therapeutic approaches. Traditional Chinese medicine polysaccharides have garnered increasing attention in recent years due to their versatility, high efficiency, and low side effects, and they have demonstrated significant potential in preventing and treating ALD. Emerging studies have suggested that these polysaccharides exert their therapeutic effects through multiple mechanisms, including the inhibition of oxidative stress and the regulation of lipid metabolism, gut microbiota, and programmed cell death. This review summarizes the recent research progress in the pharmacological effects and regulatory mechanisms of traditional Chinese medicine polysaccharides in treating ALD, aiming to provide a scientific basis and theoretical support for their application in the prevention and treatment of ALD.
Humans ; Liver Diseases, Alcoholic/metabolism* ; Polysaccharides/administration & dosage* ; Drugs, Chinese Herbal/administration & dosage* ; Animals ; Oxidative Stress/drug effects* ; Medicine, Chinese Traditional ; Gastrointestinal Microbiome/drug effects* ; Lipid Metabolism/drug effects*

Objective:To clarify the natural course of renal angiomyolipoma and the risk factors for its progression.Methods:This was a retrospective case-control study that included 401 patients diagnosed several times by ultrasound examination in the hospital physical examination system from January 2012 to June 2024. All patients were untreated. There were 128 male cases (31.90%) and 273 female cases (68.10%). The average age at initial diagnosis was (44.04 ± 10.24) years (range 22-78 years). The median longest diameter of the tumor at initial diagnosis was 9.0 (7.0, 11.5) mm. There were 359 cases (89.50%) with single tumors and 42 cases (10.50%) with multiple tumors. The patients were divided into the progression group(≥1 mm/year) and the non-progression group (<1 mm/year)based on the average growth rate of tumor. The differences in gender, age at initial diagnosis, initial tumor size, number of lesions and lesion site between the two groups were compared. Univariate logistic regression analysis was used to explore the relationship between the above factors and the progression of renal angiomyolipoma. Multivariate logistic regression analysis was conducted to identify the risk factors for progression.Results:A total of 401 cases were followed up for an average of (88.15 ± 21.09) months (range 48-140 months). The median maximum diameter of the tumors at the initial diagnosis was 9.0 (7.0, 11.5) mm, and at the end of the follow-up, it was 11 (8, 14) mm. The average growth rate was 0.38 mm/year, and the median growth rate was 0.25 (0, 0.60) mm/year. Among them, 341 cases (85.04%) were in the non-progression group with an average growth rate of 0.14 mm/year, and 60 cases (14.96%) were in the progression group with an average growth rate of 1.74 mm/year. The age of the progression group was lower than that of the non-progression group [(41.43 ± 9.64) years vs. (44.50±10.29) years], the initial maximum diameter of the tumors in the progression group was larger than that in the non-progression group [11.0 (8.0, 16.0) mm vs. 9.0 (7.0, 11.0) mm], and the proportion of multiple tumors in the progression group was higher than that in the non-progression group [14 cases (23.30%) vs. 28 cases (8.20%)], and the differences were all statistically significant ( P<0.05). Age at initial diagnosis( OR=0.96, 95% CI 0.93-0.99), initial tumor size ( OR=1.08, 95% CI 1.04-1.12) and number of lesions ( OR=2.96, 95% CI 1.38-6.34) were the risk factors for the growth of renal angiomyolipoma ( P<0.05), according to the results of multivariate logistic regression analysis. Conclusions:The natural history of most renal angiomyolipoma shows slow growth or relative quiescence, with a small number showing a significant increasing trend. Age at initial diagnosis, initial tumor size and number of lesions were independent risk factors for the growth of renal angiomyolipoma.

Objective:To compare the differences in chemical compositions before and after processing by different processing methods; To optimize the processing method of Atractylodes lancea Rhizoma.Methods:Atractylodes lancea Rhizoma was processed by stir-frying with bran and treating with rice washing water. The volatile and non-volatile components of raw Atractylodes lancea Rhizoma, bran-fried Atractylodes lancea Rhizoma and rice washing water treated Atractylodes lancea Rhizome were qualitatively analyzed by headspace gas chromatography-mass spectrometry (HS-GC-MS) and ultra-performance liquid chromatography-quadrupole-electrostatic field orbitrap high-resolution mass spectrometry (UPLC-Q-Orbitrap HRMS), and the differences in chemical composition before and after processing were compared.Results:The volatile components of the three different products were determined to have 18 common components, such as agarospirol, β-eudesol, etc. In addition, 86 non-volatile components were determined. The peak area response value of atractylodin, the index component prescribed by pharmacopoeia, decreased after processing, but there was little difference in bran stir-frying and rice-washed water frying.Conclusions:Different processing methods have certain effects on the chemical composition of Atractylodes lancea Rhizoma. Among them, the bran-frying method is superior in improving the quality of preparations, reducing production costs and improving production efficiency. The bran-fried product can be used as raw material for preparation production.

The Portable Life Support System(PLSS),serving as a core component of the Extravehicular Activity spacesuit,must balance the requirements of life support protection and lightweight design.This study proposes a sandwich structure design based on Carbon Fiber Reinforced Polymer and validates the structural reliability of the composite backpack under launch/return segment overloads and space collision conditions through multi-scenario mechanical simulations.Simulation results demonstrate that the design achieves maximum deformations of 0.372 mm(mounting plate)under 6 g acceleration and 7.4 mm(skeleton)under 0.97 MPa impact loading,satisfying structural integrity requirements under extreme loads.The composite backpack manufactured by the autoclave molding process has passed the impact protection test under load conditions,verifying the manufacturing feasibility of the composite PLSS.This research provides a technically reliable pathway for lightweight design of EVA spacesuit structures by using composite materials,offering practical engineering value.

BACKGROUND: Post-stroke disability diminishes the physical activity (PA) level of survivors, potentially affecting their long-term prognosis. This study endeavors to explore the correlation between daily PA level and the all-cause mortality in patients with a history of stoke in the United States. METHODS: Data of stroke survivors were sourced from the National Health and Nutritional Examination Survey (NHANES) 2007-2018. The population was stratified into three groups based on their PA level. Kaplan-Meier method with log-rank tests for significance was used for survival analysis. Weighted Cox proportional hazards regression models were employed to estimate the hazard ratios (HRs) for all-cause mortality. Subgroup analysis was conducted to strengthen the results. RESULTS: A total of 1395 participants were recruited, comprising 679 males and 716 females, with a median age of 68 years. Based on their PA levels, 779 individuals were classified as inactive, 156 as insufficiently active, and 460 as sufficiently active. Following a median observation period of 59 months, there were 476 recorded deaths, with 349, 47, and 80 cases in the three respective groups. Compared to the inactive group, the HRs and 95% confidence intervals (CIs) for all-cause mortality in participants who were insufficiently active and sufficiently active were 0.58 (0.40, 0.84) and 0.47 (0.33, 0.67), respectively. The Kaplan-Meier curve revealed a significant difference in overall survival between the three groups, as confirmed by the log-rank test (P < 0.0001). Subgroup analysis further validated our results and demonstrated that the protective impact of PA on stroke prognosis varies according to distinct characteristics. CONCLUSIONS The results indicate that increased levels of PA are associated with a protective effect on long-term mortality among stroke survivors. Further prospective longitudinal studies are necessary to elucidate the optional PA level and special exercise guideline targeting this population.
Humans ; Male ; Female ; Aged ; Exercise ; Middle Aged ; Nutrition Surveys ; Stroke/mortality* ; United States/epidemiology* ; Survivors/statistics & numerical data* ; Aged, 80 and over ; Mortality