1.Preparation and hydrolytic activity analysis of dual-catalytic-triad PETase
Qiudong SU ; Xining YAO ; Feng QIU ; Feng WANG ; Shuang ZHANG ; Ke XU ; Shengli BI ; Yanhai WANG
Acta Universitatis Medicinalis Anhui 2026;61(3):546-551
ObjectiveTo prepare a recombinant PETase with a dual-catalytic-triad and to evaluate its efficiency in the biodegradation of polyethylene terephthalate (PET). MethodsBased on the crystal structure of wild-type PETase, point mutations (T88H/L117D) were introduced via site-directed mutagenesis. The recombinant protein was prepared using prokaryotic expression and chromatography purification techniques. The enzymatic hydrolysis of the mutant PETase was assessed by relatively quantifying the products mono (2-hydroxyethyl) terephthalate (MHET) and terephthalic acid (TPA). ResultsBoth wild-type and mutant PETases accumulated as inclusion bodies, accounting for approximately 20% of the total bacterial protein. After solubilization in urea, the proteins were eluted at 300 mmol/L imidazole during affinity chromatography purification, with concentrations of 1.824 and 1.833 mg/mL and purities of 83.11% and 84.32%, respectively. Subsequent anion-exchange chromatography yielded highly pure enzymes in the 200 mmol/L NaCl fraction: 2.776 mg/mL (96.86% purity) for the wild type and 1.967 mg/mL (95.13% purity) for the mutant. Following refolding, the final concentrations were 0.484 mg/mL for the wild type and 0.991 mg/mL for the mutant. Hydrolysis assays revealed that the mutant released MHET and TPA at (237.67±17.00)% and (197.33±12.01)% of the wild-type levels, respectively. ConclusionThe T88H/L117D dual-catalytic-triad PETase is successfully prepared and it significantly enhanced PET-degrading activity, thus, it′s a promising biocatalyst for PET bioremediation.
2.Gardeniae Fructus-Salviae Miltiorrhizae Radix et Rhizoma Regulates Ferroptosis via Nrf2/SLC7A11/GPX4 Signaling Pathway to Alleviate Myocardial Remodeling in Rat Model of Myocardial Infarction
Xuesong CHEN ; Rongnan QIU ; Shenghao WANG ; Yan FENG ; Jutong XIE ; Yuwen YAN ; Tianlin YANG ; Changxu XIE ; Lei GAO ; Jianping SHEN ; Yuehong SHEN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):54-62
ObjectiveTo investigate the effect of Gardeniae Fructus-Salviae Miltiorrhizae Radix et Rhizoma on ferroptosis in the rat model of myocardial infarction and further elucidate its role in myocardial remodeling. MethodsThe rat model of myocardial infarction was established by ligation of the left anterior descending coronary artery. The 50 successfully modeled rats were randomly divided into model group, ferroptosis inhibitor group (2 mg·kg-1), enalapril group (2.1 mg·kg-1), and low- and high-dose (4 g·kg-1 and 8 g·kg-1, respectively) Gardeniae Fructus-Salviae Miltiorrhizae Radix et Rhizoma, with 10 rats in each group. The rat model of myocardial infarction was established by ligation of the left anterior descending coronary artery. After 4 weeks of treatment, echocardiography was used to assess the cardiac structure and function. Hematoxylin-eosin (HE) staining and Masson staining were employed to observe pathological morphology and fibrosis of the myocardial tissue. Serum levels of N-terminal pro-B-type natriuretic peptide (NT-proBNP), transforming growth factor-β (TGF-β), and myosin heavy chain-β (MHC-β) were measured by enzyme-linked immunosorbent assay (ELISA). Prussian blue staining was performed to detect myocardial iron deposition. The myocardial mitochondrial structure was observed by transmission electron microscopy. Levels of malondialdehyde (MDA) and glutathione (GSH) in the myocardial tissue were determined by lipid peroxidation assay kits. Immunofluorescence assay was conducted to observe the fluorescence intensity of nuclear factor E2-related factor 2 (Nrf2) in the myocardial tissue. Western blot analysis was performed to evaluate the expression levels of proteins in the Nrf2/solute carrier family 7 member 11 (SLC7A11)/glutathione peroxidase 4 (GPX4) pathway. ResultsCompared with the sham group, the model group showed increased left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), and serum levels of NT-proBNP, TGF-β, and MHC-β (P<0.01), decreased left ventricular ejection fraction (LVEF) and left ventricular fractional shortening (LVFS) (P<0.01), disarrangement of myocardial cells, inflammatory cell infiltration, severe myocardial fibrosis, increased myocardial iron deposition, and irregular mitochondrial morphology with vacuolation. Furthermore, the modeling led to increased MDA (P<0.01), decreased GSH (P<0.01), diminished Nrf2 fluorescence intensity in the myocardial tissue, and downregulated expression levels of Nrf2, SLC7A11, and GPX4 (P<0.01). Compared with the model group, Gardeniae Fructus-Salviae Miltiorrhizae Radix et Rhizoma reduced the LVEDD, LVESD, and serum levels of NT-proBNP, TGF-β, and MHC-β (P<0.05, P<0.01), increased the LVEF and LVFS (P<0.05, P<0.01), alleviated pathological changes such as myocardial cell disarrangement, inflammatory cell infiltration, myocardial fibrosis, and iron deposition, lowered the level of MDA (P<0.05, P<0.01), raised the level of GSH (P<0.05, P<0.01), improved the mitochondrial morphology and reduced vacuolation in the myocardial tissue, enhanced Nrf2 fluorescence intensity, and upregulated the expression levels of Nrf2, SLC7A11, and GPX4 (P<0.05, P<0.01) in the rat model of myocardial infarction. ConclusionGardeniae Fructus-Salviae Miltiorrhizae Radix et Rhizoma alleviates pathological damage and myocardial remodeling in the rat model of myocardial infarction by inhibiting ferroptosis, the mechanism of which is related to the activation of Nrf2/SLC7A11/GPX4 signaling pathway.
3.Gardeniae Fructus-Salviae Miltiorrhizae Radix et Rhizoma Regulates Ferroptosis via Nrf2/SLC7A11/GPX4 Signaling Pathway to Alleviate Myocardial Remodeling in Rat Model of Myocardial Infarction
Xuesong CHEN ; Rongnan QIU ; Shenghao WANG ; Yan FENG ; Jutong XIE ; Yuwen YAN ; Tianlin YANG ; Changxu XIE ; Lei GAO ; Jianping SHEN ; Yuehong SHEN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):54-62
ObjectiveTo investigate the effect of Gardeniae Fructus-Salviae Miltiorrhizae Radix et Rhizoma on ferroptosis in the rat model of myocardial infarction and further elucidate its role in myocardial remodeling. MethodsThe rat model of myocardial infarction was established by ligation of the left anterior descending coronary artery. The 50 successfully modeled rats were randomly divided into model group, ferroptosis inhibitor group (2 mg·kg-1), enalapril group (2.1 mg·kg-1), and low- and high-dose (4 g·kg-1 and 8 g·kg-1, respectively) Gardeniae Fructus-Salviae Miltiorrhizae Radix et Rhizoma, with 10 rats in each group. The rat model of myocardial infarction was established by ligation of the left anterior descending coronary artery. After 4 weeks of treatment, echocardiography was used to assess the cardiac structure and function. Hematoxylin-eosin (HE) staining and Masson staining were employed to observe pathological morphology and fibrosis of the myocardial tissue. Serum levels of N-terminal pro-B-type natriuretic peptide (NT-proBNP), transforming growth factor-β (TGF-β), and myosin heavy chain-β (MHC-β) were measured by enzyme-linked immunosorbent assay (ELISA). Prussian blue staining was performed to detect myocardial iron deposition. The myocardial mitochondrial structure was observed by transmission electron microscopy. Levels of malondialdehyde (MDA) and glutathione (GSH) in the myocardial tissue were determined by lipid peroxidation assay kits. Immunofluorescence assay was conducted to observe the fluorescence intensity of nuclear factor E2-related factor 2 (Nrf2) in the myocardial tissue. Western blot analysis was performed to evaluate the expression levels of proteins in the Nrf2/solute carrier family 7 member 11 (SLC7A11)/glutathione peroxidase 4 (GPX4) pathway. ResultsCompared with the sham group, the model group showed increased left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), and serum levels of NT-proBNP, TGF-β, and MHC-β (P<0.01), decreased left ventricular ejection fraction (LVEF) and left ventricular fractional shortening (LVFS) (P<0.01), disarrangement of myocardial cells, inflammatory cell infiltration, severe myocardial fibrosis, increased myocardial iron deposition, and irregular mitochondrial morphology with vacuolation. Furthermore, the modeling led to increased MDA (P<0.01), decreased GSH (P<0.01), diminished Nrf2 fluorescence intensity in the myocardial tissue, and downregulated expression levels of Nrf2, SLC7A11, and GPX4 (P<0.01). Compared with the model group, Gardeniae Fructus-Salviae Miltiorrhizae Radix et Rhizoma reduced the LVEDD, LVESD, and serum levels of NT-proBNP, TGF-β, and MHC-β (P<0.05, P<0.01), increased the LVEF and LVFS (P<0.05, P<0.01), alleviated pathological changes such as myocardial cell disarrangement, inflammatory cell infiltration, myocardial fibrosis, and iron deposition, lowered the level of MDA (P<0.05, P<0.01), raised the level of GSH (P<0.05, P<0.01), improved the mitochondrial morphology and reduced vacuolation in the myocardial tissue, enhanced Nrf2 fluorescence intensity, and upregulated the expression levels of Nrf2, SLC7A11, and GPX4 (P<0.05, P<0.01) in the rat model of myocardial infarction. ConclusionGardeniae Fructus-Salviae Miltiorrhizae Radix et Rhizoma alleviates pathological damage and myocardial remodeling in the rat model of myocardial infarction by inhibiting ferroptosis, the mechanism of which is related to the activation of Nrf2/SLC7A11/GPX4 signaling pathway.
4.2,3,5,4′-tetrahydroxyldiphenylethylene-2-O-glucoside Attenuates Cerebral Ischemia-reperfusion Injury via PINK1/LETM1 Signaling Pathway
Hongyu ZENG ; Kaimei TAN ; Feng QIU ; Yun XIANG ; Ziyang ZHOU ; Dahua WU ; Chang LEI ; Hongqing ZHAO ; Yuhong WANG ; Xiuli ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):145-154
ObjectiveTo investigate the mechanism by which 2,3,5,4'-tetrahydroxyldiphenylethylene-2-O-glucoside (THSG) mitigates cerebral ischemia/reperfusion (CI/R) injury by regulating mitochondrial calcium overload and promoting mitophagy. MethodsSixty male SD rats were randomized into sham, model, SAS (40 mg·kg-1), and low-, medium- and high-dose (10, 20, 40 mg·kg-1, respectively) THSG groups, with 10 rats in each group. The middle cerebral artery occlusion/reperfusion (MCAO/R) model was established by the modified Longa suture method. An oxygen-glucose deprivation/reoxygenation (OGD/R) model was constructed in PC12 cells. Neurological deficits were assessed via Zea Longa scoring, and cerebral infarct volume was measured by 2,3,5-triphenyltetrazolium chloride (TTC) staining. Structural and functional changes of cortical neurons in MCAO/R rats were assessed by hematoxylin-eosin and Nissl staining. PC12 cell viability was detected by cell counting kit-8 (CCK-8) assay, and mitochondrial calcium levels were quantified by Rhod-2 AM. Immunofluorescence was used to detect co-localization of PTEN-induced kinase 1 (PINK1) and leucine zipper/EF-hand-containing transmembrane protein 1 (LETM1) in neurons. Transmission electron microscopy (TEM) was employed to observe mitochondrial morphology in neurons. Western blot was employed to analyze the expression of translocase of outer mitochondrial membrane 20 (TOMM20), autophagy-associated protein p62, microtubule-associated protein light chain 3 (LC3), cysteinyl aspartate-specific proteinase-9 (Caspase-9), B-cell lymphoma 2-associated protein X (Bax), and cytochrome C (Cyt C). ResultsCompared with the sham group, the model group exhibited increased infarct volume (P<0.01) and neurological deficit scores (P<0.01), neuronal structure was disrupted with reduced Nissl bodies. (P<0.01), mitochondrial swelling/fragmentation, decreased PINK1/LETM1 co-localization (P<0.01), upregulated protein levels of LC3Ⅱ/LC3Ⅰ, TOMM20, Caspase-9, Bax, and Cyt C (P<0.01), downregulated protein level of p62 (P<0.05), weakened PC12 viability (P<0.01), and elevated mitochondrial calcium level (P<0.01). Compared with the model group, THSG and SAS groups showed reduced infarct volumes (P<0.05,P<0.01) and neurological deficit scores (P<0.05,P<0.01), mitigated mitochondrial damage, and increased PINK1/LETM1 co-localization (P<0.01). Medium/high-dose THSG and SAS alleviated the neurological damage, increased Nissl bodies (P<0.05,P<0.01), downregulated the protein levels of p62, TOMM20, Caspase-9, Bax, and Cyt C (P<0.05,P<0.01), and elevated the LC3Ⅱ/LC3Ⅰ level (P<0.05,P<0.01). High-dose THSG enhanced PC12 cell viability (P<0.01), increased PINK1/LETM1 co-localization (P<0.01), and reduced mitochondrial calcium (P<0.01). ConclusionTHSG may exert the neuroprotective effect on CI/R injury by activating the PINK1-LETM1 signaling pathway, reducing the mitochondrial calcium overload, and promoting mitophagy.
5.Heterogeneity of Adipose Tissue From a Single-cell Transcriptomics Perspective
Yong-Lang WANG ; Si-Si CHEN ; Qi-Long LI ; Yu GONG ; Xin-Yue DUAN ; Ye-Hui DUAN ; Qiu-Ping GUO ; Feng-Na LI
Progress in Biochemistry and Biophysics 2025;52(4):820-835
Adipose tissue is a critical energy reservoir in animals and humans, with multifaceted roles in endocrine regulation, immune response, and providing mechanical protection. Based on anatomical location and functional characteristics, adipose tissue can be categorized into distinct types, including white adipose tissue (WAT), brown adipose tissue (BAT), beige adipose tissue, and pink adipose tissue. Traditionally, adipose tissue research has centered on its morphological and functional properties as a whole. However, with the advent of single-cell transcriptomics, a new level of complexity in adipose tissue has been unveiled, showing that even under identical conditions, cells of the same type may exhibit significant variation in morphology, structure, function, and gene expression——phenomena collectively referred to as cellular heterogeneity. Single-cell transcriptomics, including techniques like single-cell RNA sequencing (scRNA-seq) and single-nucleus RNA sequencing (snRNA-seq), enables in-depth analysis of the diversity and heterogeneity of adipocytes at the single-cell level. This high-resolution approach has not only deepened our understanding of adipocyte functionality but also facilitated the discovery of previously unidentified cell types and gene expression patterns that may play key roles in adipose tissue function. This review delves into the latest advances in the application of single-cell transcriptomics in elucidating the heterogeneity and diversity within adipose tissue, highlighting how these findings have redefined the understanding of cell subpopulations within different adipose depots. Moreover, the review explores how single-cell transcriptomic technologies have enabled the study of cellular communication pathways and differentiation trajectories among adipose cell subgroups. By mapping these interactions and differentiation processes, researchers gain insights into how distinct cellular subpopulations coordinate within adipose tissues, which is crucial for maintaining tissue homeostasis and function. Understanding these mechanisms is essential, as dysregulation in adipose cell interactions and differentiation underlies a range of metabolic disorders, including obesity and diabetes mellitus type 2. Furthermore, single-cell transcriptomics holds promising implications for identifying therapeutic targets; by pinpointing specific cell types and gene pathways involved in adipose tissue dysfunction, these technologies pave the way for developing targeted interventions aimed at modulating specific adipose subpopulations. In summary, this review provides a comprehensive analysis of the role of single-cell transcriptomic technologies in uncovering the heterogeneity and functional diversity of adipose tissues.
6.2,3,5,4′-tetrahydroxyldiphenylethylene-2-O-glucoside Attenuates Cerebral Ischemia-reperfusion Injury via PINK1/LETM1 Signaling Pathway
Hongyu ZENG ; Kaimei TAN ; Feng QIU ; Yun XIANG ; Ziyang ZHOU ; Dahua WU ; Chang LEI ; Hongqing ZHAO ; Yuhong WANG ; Xiuli ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):145-154
ObjectiveTo investigate the mechanism by which 2,3,5,4'-tetrahydroxyldiphenylethylene-2-O-glucoside (THSG) mitigates cerebral ischemia/reperfusion (CI/R) injury by regulating mitochondrial calcium overload and promoting mitophagy. MethodsSixty male SD rats were randomized into sham, model, SAS (40 mg·kg-1), and low-, medium- and high-dose (10, 20, 40 mg·kg-1, respectively) THSG groups, with 10 rats in each group. The middle cerebral artery occlusion/reperfusion (MCAO/R) model was established by the modified Longa suture method. An oxygen-glucose deprivation/reoxygenation (OGD/R) model was constructed in PC12 cells. Neurological deficits were assessed via Zea Longa scoring, and cerebral infarct volume was measured by 2,3,5-triphenyltetrazolium chloride (TTC) staining. Structural and functional changes of cortical neurons in MCAO/R rats were assessed by hematoxylin-eosin and Nissl staining. PC12 cell viability was detected by cell counting kit-8 (CCK-8) assay, and mitochondrial calcium levels were quantified by Rhod-2 AM. Immunofluorescence was used to detect co-localization of PTEN-induced kinase 1 (PINK1) and leucine zipper/EF-hand-containing transmembrane protein 1 (LETM1) in neurons. Transmission electron microscopy (TEM) was employed to observe mitochondrial morphology in neurons. Western blot was employed to analyze the expression of translocase of outer mitochondrial membrane 20 (TOMM20), autophagy-associated protein p62, microtubule-associated protein light chain 3 (LC3), cysteinyl aspartate-specific proteinase-9 (Caspase-9), B-cell lymphoma 2-associated protein X (Bax), and cytochrome C (Cyt C). ResultsCompared with the sham group, the model group exhibited increased infarct volume (P<0.01) and neurological deficit scores (P<0.01), neuronal structure was disrupted with reduced Nissl bodies. (P<0.01), mitochondrial swelling/fragmentation, decreased PINK1/LETM1 co-localization (P<0.01), upregulated protein levels of LC3Ⅱ/LC3Ⅰ, TOMM20, Caspase-9, Bax, and Cyt C (P<0.01), downregulated protein level of p62 (P<0.05), weakened PC12 viability (P<0.01), and elevated mitochondrial calcium level (P<0.01). Compared with the model group, THSG and SAS groups showed reduced infarct volumes (P<0.05,P<0.01) and neurological deficit scores (P<0.05,P<0.01), mitigated mitochondrial damage, and increased PINK1/LETM1 co-localization (P<0.01). Medium/high-dose THSG and SAS alleviated the neurological damage, increased Nissl bodies (P<0.05,P<0.01), downregulated the protein levels of p62, TOMM20, Caspase-9, Bax, and Cyt C (P<0.05,P<0.01), and elevated the LC3Ⅱ/LC3Ⅰ level (P<0.05,P<0.01). High-dose THSG enhanced PC12 cell viability (P<0.01), increased PINK1/LETM1 co-localization (P<0.01), and reduced mitochondrial calcium (P<0.01). ConclusionTHSG may exert the neuroprotective effect on CI/R injury by activating the PINK1-LETM1 signaling pathway, reducing the mitochondrial calcium overload, and promoting mitophagy.
7.Treatment of chronic lumbar disc herniation by bone injury manipulation combined with guided exercise.
Feng QIU ; Ai-Zhen ZHOU ; Lin GUO ; Lei WANG ; Xian ZHANG
China Journal of Orthopaedics and Traumatology 2025;38(8):779-785
OBJECTIVE:
To explore the clinical efficacy of orthopedic manipulation combined with daoyin exercises in the treatment of chronic lumbar disc herniation under the guidance of the theory of "equal emphasis on muscles and bones".
METHODS:
A total of 60 patients with single-segment, unilateral chronic lumbar disc herniation from January 2023 to January 2024 were randomly divided into the traditional physical therapy group and the manipulation treatment group, with 30 cases in each group. Among them, 3 cases were lost to follow-up in the traditional physical therapy group and 2 cases in the manipulation treatment group. There were 27 cases in the traditional physical therapy group, including 15 males and 12 females, aged 25 to 65 years old with an average of (51.96±14.42) years;the course of disease ranged from 3 to 15 months with an average of (9.89±3.32) months;11 cases were on the left side and 16 cases on the right side;15 cases were at the L4, 5 segment and 12 cases at the L5S1 segment. They were treated with lumbar traction, medium-frequency electrical stimulation and ultrasonic therapy. There were 28 cases in the manipulation treatment group, including 14 males and 14 females, aged 24 to 68 years old with an average of (49.82±14.85) years old;the course of disease ranged from 3 to 14 months with an average of (9.61±3.05) months;15 cases were on the left side and 13 cases on the right side;17 cases were at the L4, 5 segment and 11 cases at the L5S1 segment. They were treated with orthopedic manipulation combined with daoyin exercises. The visual analogue scale (VAS), Oswestry disability index (ODI) and bilateral erector spinae muscle tone were compared between the two groups before treatment, after 2 weeks and 4 weeks of treatment.
RESULTS:
The two groups of patients were followed up and evaluated before treatment, 2 weeks and 4 weeks after treatment. The VAS of the manipulation treatment group and the traditional physical therapy group decreased from (5.46±0.99) and (5.41±1.05) points before treatment to (1.75±0.79) and (2.29±0.82) points after 4 weeks of treatment, respectively. Both groups were significantly improved after treatment compared with before treatment, and the differences were statistically significant (P<0.05);and the manipulation treatment group was better than the traditional physical therapy group at 4 weeks of treatment, with a statistically significant difference (P<0.05). The ODI of the manipulation treatment group and the traditional physical therapy group before treatment was (20.25±2.72) and (18.96±2.52) points, respectively, which decreased to (15.46±1.88) and (16.56±2.01) points after 2 weeks of treatment, and to (11.54±1.23) and (12.85±1.72) points after 4 weeks of treatment. Both groups were significantly improved after treatment compared with before treatment, and the differences were statistically significant (P<0.05), and the ODI in the manipulation treatment group was better than that in the traditional physical therapy group after treatment (P<0.05). There was no significant statistical difference in the displacement of erector spinae muscle tone between the healthy side and the affected side in both the manipulation treatment group and the traditional physical therapy group before treatment (P>0.05). After 2 weeks of treatment, the displacement values of erector spinae muscle tone on the healthy side in the manipulation treatment group and the traditional physical therapy group were (6.68±0.81) mm and (6.45±0.65) mm, respectively, and those on the affected side were (5.87±0.82) mm and (5.61±0.84) mm, respectively. After 4 weeks of treatment, the displacement values of erector spinae muscle tone on the healthy side in the manipulation treatment group and the traditional physical therapy group were (7.51±0.75) mm and (7.04±0.63) mm, respectively, and those on the affected side were (6.87±0.78) mm and (6.33±0.82) mm, respectively. The displacement values of erector spinae muscle tone on both the healthy and affected sides in both groups were significantly higher than those before treatment, and the differences were statistically significant (P<0.05);the displacement of erector spinae muscle tone in the manipulation treatment group after 4 weeks of treatment was better than that in the traditional physical therapy group, with a statistically significant difference (P<0.05).
CONCLUSION
Orthopedic manipulation combined with daoyin exercises can effectively improve the symptoms and lumbar function of patients with chronic lumbar disc herniation, and has more advantages in improving the tone of the erector spinae muscle.
Humans
;
Male
;
Female
;
Middle Aged
;
Adult
;
Intervertebral Disc Displacement/physiopathology*
;
Aged
;
Lumbar Vertebrae/injuries*
;
Exercise Therapy
;
Chronic Disease/therapy*
;
Manipulation, Orthopedic
;
Combined Modality Therapy
8.Micronucleus counts correlating with male infertility: a clinical analysis of chromosomal abnormalities and reproductive parameters.
Shun-Han ZHANG ; Ying-Jun XIE ; Wen-Jun QIU ; Qian-Ying PAN ; Li-Hao CHEN ; Jian-Feng WU ; Si-Qi HUANG ; Ding WANG ; Xiao-Fang SUN
Asian Journal of Andrology 2025;27(4):537-542
Investigating the correlation between micronucleus formation and male infertility has the potential to improve clinical diagnosis and deepen our understanding of pathological progression. Our study enrolled 2252 male patients whose semen was analyzed from March 2023 to July 2023. Their clinical data, including semen parameters and age, were also collected. Genetic analysis was used to determine whether the sex chromosome involved in male infertility was abnormal (including the increase, deletion, and translocation of the X and Y chromosomes), and subsequent semen analysis was conducted for clinical grouping purposes. The participants were categorized into five groups: normozoospermia, asthenozoospermia, oligozoospermia, oligoasthenozoospermia, and azoospermia. Patients were randomly selected for further study; 41 patients with normozoospermia were included in the control group and 117 patients with non-normozoospermia were included in the study group according to the proportions of all enrolled patients. Cytokinesis-block micronucleus (CBMN) screening was conducted through peripheral blood. Statistical analysis was used to determine the differences in micronuclei (MNi) among the groups and the relationships between MNi and clinical data. There was a significant increase in MNi in infertile men, including those with azoospermia, compared with normozoospermic patients, but there was no significant difference between the genetic and nongenetic groups in azoospermic men. The presence of MNi was associated with sperm concentration, progressive sperm motility, immotile spermatozoa, malformed spermatozoa, total sperm count, and total sperm motility. This study underscores the potential utility of MNi as a diagnostic tool and highlights the need for further research to elucidate the underlying mechanisms of male infertility.
Humans
;
Male
;
Infertility, Male/genetics*
;
Adult
;
Micronucleus Tests
;
Semen Analysis
;
Oligospermia/genetics*
;
Azoospermia/genetics*
;
Chromosome Aberrations
;
Sperm Count
;
Micronuclei, Chromosome-Defective
;
Middle Aged
9.Expert consensus on the application of nasal cavity filling substances in nasal surgery patients(2025, Shanghai).
Keqing ZHAO ; Shaoqing YU ; Hongquan WEI ; Chenjie YU ; Guangke WANG ; Shijie QIU ; Yanjun WANG ; Hongtao ZHEN ; Yucheng YANG ; Yurong GU ; Tao GUO ; Feng LIU ; Meiping LU ; Bin SUN ; Yanli YANG ; Yuzhu WAN ; Cuida MENG ; Yanan SUN ; Yi ZHAO ; Qun LI ; An LI ; Luo BA ; Linli TIAN ; Guodong YU ; Xin FENG ; Wen LIU ; Yongtuan LI ; Jian WU ; De HUAI ; Dongsheng GU ; Hanqiang LU ; Xinyi SHI ; Huiping YE ; Yan JIANG ; Weitian ZHANG ; Yu XU ; Zhenxiao HUANG ; Huabin LI
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2025;39(4):285-291
This consensus will introduce the characteristics of fillers used in the surgical cavities of domestic nasal surgery patients based on relevant literature and expert opinions. It will also provide recommendations for the selection of cavity fillers for different nasal diseases, with chronic sinusitis as a representative example.
Humans
;
Nasal Cavity/surgery*
;
Nasal Surgical Procedures
;
China
;
Consensus
;
Sinusitis/surgery*
;
Dermal Fillers
10.Self-degradable "gemini-like" ionizable lipid-mediated delivery of siRNA for subcellular-specific gene therapy of hepatic diseases.
Qiu WANG ; Bin WAN ; Yao FENG ; Zimeng YANG ; Dan LI ; Fan LIU ; Ya GAO ; Chang LI ; Yanhua LIU ; Yongbing SUN ; Zhonggui HE ; Cong LUO ; Jin SUN ; Qikun JIANG
Acta Pharmaceutica Sinica B 2025;15(6):2867-2883
Tailored lipid nanoparticles (LNPs)-mediated small interfering RNA (siRNA) nanomedicines show promise in treating liver disease, such as acute liver injury (ALI) and non-alcoholic steatohepatitis (NASH). However, constructing LNPs that address biosafety concerns, ensure efficient delivery, and target specific hepatic subcellular fractions has been challenging. To evade above obstacles, we develop three novel self-degradable "gemini-like" ionizable lipids (SS-MA, SS-DC, SS-MH) by incorporating disulfide bonds and modifying the length of ester bond and tertiary amino head. Our findings reveal that the disulfide-bond-bridged LNPs exhibit reduction-responsive drug release, improving both biosafety and siRNA delivery efficiency. Furthermore, the distance of ester bond and tertiary amino head significantly influences the LNPs' pK a, thereby affecting endosomal escape, hemolytic efficiency, absorption capacity of ApoE, uptake efficiency of hepatocytes and liver accumulation. We also develop the modified-mannose LNPs (M-LNP) to target liver macrophages specifically. The optimized M-MH_LNP@TNFα exhibits potential in preventing ALI by decreasing tumor necrosis factor α (TNFα) levels in the macrophages, while MH_LNP@DGAT2 could treat NASH by selectively degrading diacylglycerol O-acyltransferase 2 (DGAT2) in the hepatocytes. Our findings provide new insights into developing novel highly effective and low-toxic "gemini-like" ionizable lipids for constructing LNPs, potentially achieving more effective treatment for hepatic diseases.

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