Aging is a natural process in which tissue and organ function declines as organisms age. Aging is the inevitable outcome of the organism and is irreversible. The aging process is accompanied by degenerative changes in the morphological structure of multiple organs of the body, leading to an increase in the incidence of chronic diseases such as hypertension, cardiovascular and cerebrovascular diseases, hyperlipidemia, and diabetes year by year. In recent years, natural phytochemicals have attracted widespread attention from the public due to their advantages such as non-toxicity or low toxicity, low cost, and various biological activities. Epigallocatechin gallate (EGCG) is a dietary polyphenol extracted from green tea, which has a variety of biological functions including anti-oxidation, anti-inflammation, hypoglycemic, hypolipidemic and anti-aging activities. The EGCG-mediated anti-aging mechanism has been investigated in many studies with different aging models. This article reviews the research progress on rodents, nematodes, fruit flies, and cell aging models, focusing on summarizing the lifespan extension and physiological changes of rodents, nematodes and fruit flies after EGCG intervention from multiple angles, and exploring potential mechanism by which EGCG delays aging and extends lifespan. This review provides a theoretical reference for the study of the anti-aging mechanism of phytochemicals.

Aging is a natural process in which tissue and organ function declines as organisms age. Aging is the inevitable outcome of the organism and is irreversible. The aging process is accompanied by degenerative changes in the morphological structure of multiple organs of the body, leading to an increase in the incidence of chronic diseases such as hypertension, cardiovascular and cerebrovascular diseases, hyperlipidemia, and diabetes year by year. In recent years, natural phytochemicals have attracted widespread attention from the public due to their advantages such as non-toxicity or low toxicity, low cost, and various biological activities. Epigallocatechin gallate (EGCG) is a dietary polyphenol extracted from green tea, which has a variety of biological functions including anti-oxidation, anti-inflammation, hypoglycemic, hypolipidemic and anti-aging activities. The EGCG-mediated anti-aging mechanism has been investigated in many studies with different aging models. This article reviews the research progress on rodents, nematodes, fruit flies, and cell aging models, focusing on summarizing the lifespan extension and physiological changes of rodents, nematodes and fruit flies after EGCG intervention from multiple angles, and exploring potential mechanism by which EGCG delays aging and extends lifespan. This review provides a theoretical reference for the study of the anti-aging mechanism of phytochemicals.

Objective:To compare the clinical efficacy of 1 h and 12 h getting out of bed after transradial percutaneous coronary intervention (PCI), and to provide evidence for early safe getting out of bed after PCI.Methods:The quasi-experimental method was used in this study. A total of 84 patients undergoing radial artery PCI in the Cardiovascular Center of the Affiliated Hospital of Gansu University of Chinese Medicine from July 2022 to May 2023 were selected by purpose sampling method, and were divided into the control group and the experimental group by random number table method, with 42 patients in each group. The control group was given 12 h post-operative getting out of bed activity program, and the experimental group was given 1 h post-operative getting out of bed activity program. The quality of life and self-care ability of daily life were compared before and after intervention. Besides patients′ rehabilitation satisfaction was compared after intervention.Results:Ultimately there were 42 patients in each group completed the research. In the control group, there were 24 males, 18 females, aged (66.08 ± 6.78) years old; in the experimental group there were 22 males, 20 females, aged (68.03 ± 7.17) years old. Before intervention, there were no significant differences in quality of life, self-care ability of daily life and adverse cardiac events between 2 groups (all P>0.05). After intervention, the scores of quality of life in physical function, social relationship, emotional function and environment were (77.20 ± 4.17), (42.40 ± 3.71), (68.10 ± 4.74) and (76.90 ± 4.38), respectively. Higher than (74.50 ± 3.91), (40.20 ± 3.94), (67.70 ± 3.88), (74.35 ± 3.41) in the control group, the differences between the two groups were statistically significant ( t values were 2.17-2.98, all P<0.05). The scores of daily self-care ability in grooming, eating, dressing, going to the toilet, going up and down stairs, bed chair transfer and flat walking were (4.62 ± 1.33), (6.37 ± 2.26), (8.00 ± 2.48), (6.25 ± 2.46), (4.62 ± 2.08), (10.12 ± 3.09), (10.50 ± 3.54) points, higher than the control group (4.06 ± 1.96), (5.75 ± 1.79), (6.37 ± 2.26), (5.25 ± 1.10), (3.37 ± 2.62), (8.75 ± 2.19), (8.87 ± 2.11) points. The differences between the two groups were statistically significant ( t values were 2.29-3.30, all P<0.05). The scores of rehabilitation satisfaction of experimental group in rehabilitation treatment effect, team professional level and rehabilitation treatment arrangement were (4.55 ± 0.50), (4.82 ± 0.38), (4.77 ± 0.42) points, respectively, which were higher than (4.20 ± 0.64), (4.47 ± 0.64), (4.40 ± 0.81) points of control group. The differences between the two groups were statistically significant ( t=2.69, 2.96, 2.59, all P<0.05). Conclusions:Getting out of bed 1 h after radial artery PCI is safe and effective, which can significantly improve patients′ quality of life, self-care ability and satisfaction.It is expected to be clinically promoted and trialed.

Objective To evaluate the objective sleep status of patients with chronic insomnia by cardiopulmonary coupling (CPC) technique, and evaluate the characteristics of cognitive dysfunction to explore the correlation between objective sleep and cognitive dysfunction in patients with chronic insomnia. Methods Forty-three patients with chronic insomnia, admitted to our hospital from October 2017 to April 2019, were enrolled in our study;15 age-, gender-and education-matched healthy volunteers were recruited as control group. All subjects followed their daily routine at home and completed CPC examination. Montreal Cognitive Assessment (MoCA), Auditory Vocabulary Learning Test (AVLT), Trail Making Test (TMT) and Stroop Color Word Test were used to evaluate the general and single cognitive functions, respectively. The correlation of objective sleep with cognitive function was analyzed. Results (1) As compared with those in the control group, high frequency coupling (stable sleep) ratio was significantly decreased, low frequency coupling (un-stable sleep) ratio and extremely low frequency coupling (rapid-eye-movement sleep/waking) ratio were significantly increased, and latency of high frequency coupling was significantly prolonged in chronic insomnia group (P<0.05). (2) Chronic insomnia group had significantly lower MoCA total scores than control group (P<0.05), specifically manifested as decrement of visuospatial ability and execution and attention abilities; specific cognitive test showed that chronic insomnia group performed worse in immediate recall, and had delayed recall of AVLT, longer time consumption in TMT-B, smaller number of wired arrival numbers, and longer time consumption in Stroop color word test than the control group, with significant differences (P<0.05). (3) There was a correlation between CPC sleep structure and Cognitive Function Scale scores in patients with chronic insomnia. Conclusion In patients with chronic insomnia, stable sleep is reduced, un-stable sleep and rapid-eye-movement sleep/waking are increased; the impaired cognition domains are visual space and executive function, attention and memory; disturbed sleep structure aggravates the memory and execution impairment of patients with chronic insomnia.

The aim of the present study was to evaluate the effect of storage conditions,pretreatment,temperature,time and excystation solutions on in vitro excystation of Cryptosporidium oocyst.Cryptosporidium andersoni oocyst was used as a model and the results showed that 0.5% sodium hypochlorite could enhance the excystation rates.But there was no significant difference compared with oocysts untreated by sodium hypochlorite(P＞0.05).0.75% synthetic sodium taurocholate and 1% bile solution could urge the excystation of oocysts,which were significantly different compared with the excystation rate of oocysts in 0.25% trypsin solution or in PBS(P<0.05).The excystation rates of oocysts in acidic water (pH =3) were similar with the rates in PBS (pH =7.2) but significantly different from the rates in alkaline water (pH =9) (P<0.01).Additionally,the excystation rate of oocysts in water of 24℃ was significantly lower than in water of 37℃(P<0.01),and the excystation rate of oocysts raised gradually at 37℃ with the passage of time.It's concluded that temperature,acidity and excystation solution were vital factors for the in vitro excystation of Cryptosporidium oocyst.A higher excystation rate could be observed when oocysts were pretreated with 0.5% sodium hypochlorite and treated with 0.75% synthetic sodium taurocholate at 37℃ for 3 hours.