Objective:To observe the regulative effect of auricular acupuncture, moxibustion and Chinese herbs on immunologic function in the D-galactose-induced aging mouse and to probe the feasibility and possible mechanisms fo...Objective:To observe the regulative effect of auricular acupuncture, moxibustion and Chinese herbs on immunologic function in the D-galactose-induced aging mouse and to probe the feasibility and possible mechanisms for delaying aging, so as to provide experimental basis for acupuncture, moxibustion and Chinese herbs for delaying aging. Methods: Aging mouse model was established by subcutaneous injection of D-galactose, and treated by auricular acupuncture, auricular acupuncture plus moxibustion, and auricular acupuncture plus Chinese herbs respectively for 6 weeks and then serum interleukin-2 (IL-2) and IL-6 contents and splenic lymphocyte transformation rate were compared among the groups. Results: Compared with the young group, the serum IL-2 level and the splenic lymphocyte transformation rate significantly decreased and the IL-6 level significantly increased in the aging mouse. After treatment by auricular acupuncture, auricular acupuncture plus Chinese herbs, especially auricular acupuncture plus moxibustion, the serum IL-2 level and the splenic lymphocyte transformation rate significantly increased, and the IL-6 level significantly decreased as compared with the model group. Conclusions: Combined application of auricular acupuncture, moxibustion and Chinese herbs can improve the decline or dysfunction of immunological function in the aging organism to a certain extent.展开更多
Age-related hearing loss (AHL), or presbycusis, is the most common neurodegenerative disorder and top communication deficit of the aged population. Genetic predisposition is one of the major factors in the development...Age-related hearing loss (AHL), or presbycusis, is the most common neurodegenerative disorder and top communication deficit of the aged population. Genetic predisposition is one of the major factors in the development of AHL. Generally, AHL is associated with an age-dependent loss of sensory hair cells, spiral ganglion neurons and stria vascularis cells in the inner ear. Although the mechanisms leading to genetic hearing loss are not completely understood, caspase-family proteases function as important signals in the inner ear pathology. It is now accepted that mouse models are the best tools to study the mechanism of genetic hearing loss or AHL. Here, we provide a brief review of recent studies on hearing improvement in mouse models of AHL by anti-apoptotic treatment.展开更多
Summary： The type 1 insulin-like growth factor receptor （IGF-1R） and its downstream signaling com- ponents have been increasingly recognized to drive the development of malignancies, including non-small cell lung c...Summary： The type 1 insulin-like growth factor receptor （IGF-1R） and its downstream signaling com- ponents have been increasingly recognized to drive the development of malignancies, including non-small cell lung cancer （NSCLC）. This study aimed to investigate the effects of IGF-1R and its in- hibitor, AG1024, on the progression of lung cancer. Tissue microarray and immunohistochemistry were employed to detect the expressions of IGF-1 and IGF-1R in NSCLC tissues （n=198）. Western blotting was used to determine the expressions oflGF-1 and phosphorylated IGF-1R （p-IGF-1R） in A549 human lung carcinoma cells, and MTT assay to measure cell proliferation. Additionally, the expressions of IGF-1, p-IGF-1R and IGF-1R in a mouse model of lung cancer were detected by Western blotting and real-time fluorescence quantitative polymerase chain reaction （FQ-PCR）, respectively. The results showed that IGF-1 and IGF-1R were overexpressed in NSCLC tissues. The expression levels of IGF-1 and p-IGF-1R were significantly increased in A549 cells treated with IGF-1 as compared to those treated with IGF-1 ＋AG 1024 or untreated cells. In the presence of IGF-1, the proliferation of A549 cells was significantly increased. The progression of lung cancer in mice treated with IGF-1 was significantly increased as compared to the group treated with IGF-l＋AG1024 or the control group, with the same trend mirrored in IGF-1/p-IGF-1R/IGF-1R at the protein and/or mRNA levels. It was concluded that IGF- 1 and IGF inhibitor AG 1024 promotes lung cancer progression.展开更多
e-related macular degeneration （AMD） causes irreversible loss of central vision for which there is no effective treatment. Incipient pathology is thought to occur in the retina for many years before AMD manifests fr...e-related macular degeneration （AMD） causes irreversible loss of central vision for which there is no effective treatment. Incipient pathology is thought to occur in the retina for many years before AMD manifests from midlife onwards to affect a large proportion of the elderly. Although genetic as well as non-genetic/environmental risks are recognized, its complex aetiology makes it difficult to identify susceptibility, or indeed what type of AMD develops or how quickly it progresses in different individuals. Here we summarize the literature describing how the Alzheimer＇s-linked amyloid beta （Aβ） group of misfolding proteins accumulate in the retina. The discovery of this key driver of Alzheimer＇s disease in the senescent retina was unexpected and surprising, enabling an altogether different perspective of AMD. We argue that Aβ fundamentally differs from other substances which accumulate in the ageing retina, and discuss our latest findings from a mouse model in which physiological amounts of Aβ were subretinally-injected to recapitulate salient features of early AMD within a short period. Our discoveries as well as those of others suggest the pattern of Aβ accumulation and pathology in donor aged/AMD tissues are closely reproduced in mice, including late-stage AMD phenotypes, which makes them highly attractive to study dynamic aspects of Aβ-mediated retinopathy. Furthermore, we discuss our findings revealing how Aβ behaves at single-cell resolution, and consider the long-term implications for neuroretinal function. We propose Aβ as a key element in switching to a diseased retinal phenotype, which is now being used as a biomarker for latestage AMD.展开更多
背景:肌少症是一种进行性、广泛性骨骼肌疾病,与老年人骨关节炎、骨折、肢体残疾和死亡的发生密切相关。建立肌少症相关动物模型对了解肌少症病理生理机制以及找出有效治疗策略至关重要。目的:综述肌少症小鼠模型的评价标准及肌少症小...背景:肌少症是一种进行性、广泛性骨骼肌疾病,与老年人骨关节炎、骨折、肢体残疾和死亡的发生密切相关。建立肌少症相关动物模型对了解肌少症病理生理机制以及找出有效治疗策略至关重要。目的:综述肌少症小鼠模型的评价标准及肌少症小鼠模型的造模方法,并分析比较各种造模方式的优缺点,以期为肌少症的研究与诊疗提供参考。方法:以“肌少症,肌肉减少症,肌肉衰减症,骨骼肌衰老,小鼠模型,动物模型”为中文检索词,检索公式为“(肌少症OR肌肉减少症OR肌肉衰减症OR骨骼肌衰老)AND(小鼠模型OR动物模型)”;以“sarcopenia,skeletal muscle aging,mouse models,animal models”为英文检索词,检索公式为“(Sarcopenia OR Skeletal muscle aging)AND(Mouse model OR Animal models)”,检索中国知网、万方数据库和PubMed数据库在2010年1月至2022年10月期间与主题相关的文献,最终纳入59篇文献进行分析。结果与结论:①SAMP8小鼠造模时间较快,且肌肉萎缩类型与人类肌少症患者变化一致,因此是较为理想的模型;②手术法虽可以成功诱导肌肉萎缩,但需精确的手术操作,难度较大且较耗费时间;后肢悬吊法小鼠造模与老年人较类似,可视为老年肌少症的有效模型;③试剂注射造模虽操作简单,但无论是试剂的给药剂量及给药天数等尚不明确,需进一步研究;④转基因小鼠模型应用较少,其模型稳定性需进一步研究;⑤探索出一种成本低、耗时短并能高度模拟人体肌少症的小鼠模型仍是未来的研究方向。展开更多
Generation of mouse models carrying a defined point mutation,especially disease-related point mutations,is of considerable interest for research in biology and medicine.The standard method based on embryonic stem cell...Generation of mouse models carrying a defined point mutation,especially disease-related point mutations,is of considerable interest for research in biology and medicine.The standard method based on embryonic stem cell（ESC）-mediated homologous recombination（HR）is time-and labor-consuming.展开更多
文摘Objective:To observe the regulative effect of auricular acupuncture, moxibustion and Chinese herbs on immunologic function in the D-galactose-induced aging mouse and to probe the feasibility and possible mechanisms for delaying aging, so as to provide experimental basis for acupuncture, moxibustion and Chinese herbs for delaying aging. Methods: Aging mouse model was established by subcutaneous injection of D-galactose, and treated by auricular acupuncture, auricular acupuncture plus moxibustion, and auricular acupuncture plus Chinese herbs respectively for 6 weeks and then serum interleukin-2 (IL-2) and IL-6 contents and splenic lymphocyte transformation rate were compared among the groups. Results: Compared with the young group, the serum IL-2 level and the splenic lymphocyte transformation rate significantly decreased and the IL-6 level significantly increased in the aging mouse. After treatment by auricular acupuncture, auricular acupuncture plus Chinese herbs, especially auricular acupuncture plus moxibustion, the serum IL-2 level and the splenic lymphocyte transformation rate significantly increased, and the IL-6 level significantly decreased as compared with the model group. Conclusions: Combined application of auricular acupuncture, moxibustion and Chinese herbs can improve the decline or dysfunction of immunological function in the aging organism to a certain extent.
基金supported by National Natural Science Foundation of China (No. 81271092, 81570927)Scientific and Technological Developing Grant in Shandong Province (2014GSF118083)+1 种基金Scientific and Technological Developing Grant for Medicine and Health in Shandong Province (2015WS0507)Research Initiation Grant of Binzhou Medical University (BY2012KYQD01, BY2013KYQD15)
文摘Age-related hearing loss (AHL), or presbycusis, is the most common neurodegenerative disorder and top communication deficit of the aged population. Genetic predisposition is one of the major factors in the development of AHL. Generally, AHL is associated with an age-dependent loss of sensory hair cells, spiral ganglion neurons and stria vascularis cells in the inner ear. Although the mechanisms leading to genetic hearing loss are not completely understood, caspase-family proteases function as important signals in the inner ear pathology. It is now accepted that mouse models are the best tools to study the mechanism of genetic hearing loss or AHL. Here, we provide a brief review of recent studies on hearing improvement in mouse models of AHL by anti-apoptotic treatment.
基金supported by grants from the Young Science Foundation of Wuhan Central Hospital(No.YQ15A01)the National Natural Science Foundation of China(No.81501985and No.81272590)
文摘Summary： The type 1 insulin-like growth factor receptor （IGF-1R） and its downstream signaling com- ponents have been increasingly recognized to drive the development of malignancies, including non-small cell lung cancer （NSCLC）. This study aimed to investigate the effects of IGF-1R and its in- hibitor, AG1024, on the progression of lung cancer. Tissue microarray and immunohistochemistry were employed to detect the expressions of IGF-1 and IGF-1R in NSCLC tissues （n=198）. Western blotting was used to determine the expressions oflGF-1 and phosphorylated IGF-1R （p-IGF-1R） in A549 human lung carcinoma cells, and MTT assay to measure cell proliferation. Additionally, the expressions of IGF-1, p-IGF-1R and IGF-1R in a mouse model of lung cancer were detected by Western blotting and real-time fluorescence quantitative polymerase chain reaction （FQ-PCR）, respectively. The results showed that IGF-1 and IGF-1R were overexpressed in NSCLC tissues. The expression levels of IGF-1 and p-IGF-1R were significantly increased in A549 cells treated with IGF-1 as compared to those treated with IGF-1 ＋AG 1024 or untreated cells. In the presence of IGF-1, the proliferation of A549 cells was significantly increased. The progression of lung cancer in mice treated with IGF-1 was significantly increased as compared to the group treated with IGF-l＋AG1024 or the control group, with the same trend mirrored in IGF-1/p-IGF-1R/IGF-1R at the protein and/or mRNA levels. It was concluded that IGF- 1 and IGF inhibitor AG 1024 promotes lung cancer progression.
基金funded by the National Centre for the Replacement Refinement&Reduction of Animals in Research(NC3R:Grant#NC/L001152/1)the Macular Society,UK,National Eye Research Centrethe Gift of Sight Appeal
文摘e-related macular degeneration （AMD） causes irreversible loss of central vision for which there is no effective treatment. Incipient pathology is thought to occur in the retina for many years before AMD manifests from midlife onwards to affect a large proportion of the elderly. Although genetic as well as non-genetic/environmental risks are recognized, its complex aetiology makes it difficult to identify susceptibility, or indeed what type of AMD develops or how quickly it progresses in different individuals. Here we summarize the literature describing how the Alzheimer＇s-linked amyloid beta （Aβ） group of misfolding proteins accumulate in the retina. The discovery of this key driver of Alzheimer＇s disease in the senescent retina was unexpected and surprising, enabling an altogether different perspective of AMD. We argue that Aβ fundamentally differs from other substances which accumulate in the ageing retina, and discuss our latest findings from a mouse model in which physiological amounts of Aβ were subretinally-injected to recapitulate salient features of early AMD within a short period. Our discoveries as well as those of others suggest the pattern of Aβ accumulation and pathology in donor aged/AMD tissues are closely reproduced in mice, including late-stage AMD phenotypes, which makes them highly attractive to study dynamic aspects of Aβ-mediated retinopathy. Furthermore, we discuss our findings revealing how Aβ behaves at single-cell resolution, and consider the long-term implications for neuroretinal function. We propose Aβ as a key element in switching to a diseased retinal phenotype, which is now being used as a biomarker for latestage AMD.
文摘背景:肌少症是一种进行性、广泛性骨骼肌疾病,与老年人骨关节炎、骨折、肢体残疾和死亡的发生密切相关。建立肌少症相关动物模型对了解肌少症病理生理机制以及找出有效治疗策略至关重要。目的:综述肌少症小鼠模型的评价标准及肌少症小鼠模型的造模方法,并分析比较各种造模方式的优缺点,以期为肌少症的研究与诊疗提供参考。方法:以“肌少症,肌肉减少症,肌肉衰减症,骨骼肌衰老,小鼠模型,动物模型”为中文检索词,检索公式为“(肌少症OR肌肉减少症OR肌肉衰减症OR骨骼肌衰老)AND(小鼠模型OR动物模型)”;以“sarcopenia,skeletal muscle aging,mouse models,animal models”为英文检索词,检索公式为“(Sarcopenia OR Skeletal muscle aging)AND(Mouse model OR Animal models)”,检索中国知网、万方数据库和PubMed数据库在2010年1月至2022年10月期间与主题相关的文献,最终纳入59篇文献进行分析。结果与结论:①SAMP8小鼠造模时间较快,且肌肉萎缩类型与人类肌少症患者变化一致,因此是较为理想的模型;②手术法虽可以成功诱导肌肉萎缩,但需精确的手术操作,难度较大且较耗费时间;后肢悬吊法小鼠造模与老年人较类似,可视为老年肌少症的有效模型;③试剂注射造模虽操作简单,但无论是试剂的给药剂量及给药天数等尚不明确,需进一步研究;④转基因小鼠模型应用较少,其模型稳定性需进一步研究;⑤探索出一种成本低、耗时短并能高度模拟人体肌少症的小鼠模型仍是未来的研究方向。
基金supported by the Ministry of Science and Technology of China (2014CB964803 and 2015AA020307)the National Natural Science Foundation of China (Nos. 31530048, 31601163 and 81672117)+1 种基金he Chinese Academy of Sciences (XDB19010204 and QYZDJ-SSW-SMC023)the Shanghai Municipal Commission for Science and Technology(16JC1420500, 17JC1400900 and 17140901500)
文摘Generation of mouse models carrying a defined point mutation,especially disease-related point mutations,is of considerable interest for research in biology and medicine.The standard method based on embryonic stem cell（ESC）-mediated homologous recombination（HR）is time-and labor-consuming.
