Previous studies have demonstrated that pine pollen can inhibit cerebral cortical cell apoptosis in mice with arsenic poisoning. The present study sought to detect the influence of pine pollen on apoptosis-related pro...Previous studies have demonstrated that pine pollen can inhibit cerebral cortical cell apoptosis in mice with arsenic poisoning. The present study sought to detect the influence of pine pollen on apoptosis-related proteins. Immunohistochemistry, western blotting and enzyme-linked immunosorbent assays were used to measure the levels of apoptosis-related proteins in the cerebral cortex of mice with arsenic poisoning. Results indicated that pine pollen suppressed cell apoptosis in the cerebral cortex of arsenic-poisoned mice by reducing Bax, Bcl-2 protein expression and increasing p53 protein expression.展开更多
Background:To study the anti-inflammatory,analgesic,fatigue resistant and antihypoxia effects of ethanol extract and water extract of pine pollen.Methods:Two different extracts of pine pollen were prepared into there ...Background:To study the anti-inflammatory,analgesic,fatigue resistant and antihypoxia effects of ethanol extract and water extract of pine pollen.Methods:Two different extracts of pine pollen were prepared into there different concentrations,that is 1.5 mg·mL^-1,4.5 mg·mL^-1 and 7.5 mg·mL^-1 respectively.The extract were studied by xylene-induced ear swelling,acetic acid distortion test and hot plate test.The antihypoxia and antifatigue effects were explored by weight-bearing swimming experiment,routine pressure hypoxia tolerance experiment and liver weight coefficient comparison.Results:Through the study of the four pharmacological effects of ethanol extract and water extract,we found that the anti-inflammatory,analgesic,antithyposia and antifatigue effects of ethanol extract were better than that of water extract.Moreover,the experimental effects significantly improved with the increase of the concentration,and the effect of alcohol increased dose group was accurate(P<0.05).Conclusion:Pine pollen has excellent effects of anti-inflammatory,analgesic,antihypoxia and anti-fatigue.Besides,with the increase of drug concentration,effects tend to be more obvious with positive correlation.展开更多
The aim of the current study was to investigate the process of microgametogenesis and diagnostic of condition of the Pinus sylvestris male generative system in the tree stands exposed to the influence of Reftinskiy GR...The aim of the current study was to investigate the process of microgametogenesis and diagnostic of condition of the Pinus sylvestris male generative system in the tree stands exposed to the influence of Reftinskiy GRES power plant (RGpp) emission during ontogenesis in connection with the level of technogenic pollution. It was detected that in the impact area, smoke emissions from the RGpp in the south-west direction zones of technogenic pollution were formed. Those vary in qualitative composition of the snow pack pollutants and their quantitative characteristics. The content of water insoluble compounds in melt snow water and the compile suspended matter, decreases regularly at the longer distance from the source of air pollutants. The highest content of water soluble compounds in the melt snow water was indicated at the distances of 5, 8 and 14 km from the source of air pollutants, authentically lower in the nearest and farthest sampling points of the snow trials. Scots pine (Pinus sylvestris) pollen significative with high prognostic value in relation to the level of toxic load upon the eco-systems and the condition of male generative system were discovered. It was detected that the significative meanings of pollen with morphological abnormalities decreased, and the meanings of functional significatives increased at the longer distance from the source of air pollutants. Pollen fertility, pollen tube length and reserve substances content significative is negatively related to the presence of micro and macro elements in the snow water;those identify the toxic load level on the ecosystem probably to the highest degree. Pine male gametophyte elimination, while forming in the impact zone of the GRES power plant, takes place at the stage of pollen grain germination as well as pollen tubes’ growth stage.展开更多
The objectives of this study are to conduct a comprehensive literature search and bibliometric analysis to identify the breadth and volume of pharmacological and clinical studies on pine pollen(Pinus pollen)and to ide...The objectives of this study are to conduct a comprehensive literature search and bibliometric analysis to identify the breadth and volume of pharmacological and clinical studies on pine pollen(Pinus pollen)and to identify the potential effects and the use of pine pollen.Three Chinese electronic databases and two English electronic databases were searched for pharmacological and clinical studies on pine pollen.Data were extracted and analyzed and included publication year,authors,study type,pharmacological research topics or clinical diseases/conditions,usage and type of preparation,authors’conclusions,and adverse effects.Of 239 publications identified,180 were pharmacological studies,37 were clinical trials,and 22 were reviews.Numbers of publications increased particularly from 2004 onward.The top 10 most frequent topics in pharmacological studies were immune regulation,antisenility,antioxidation,liver protection,inhibiting prostate hyperplasia,inhibiting tumor cell proliferation,lowering blood glucose,lowering blood lipids,antifatigue,and improving intestinal function.The top 10 most frequent clinical diseases treated or where pine pollen was used as an adjuvant were bedsores,diaper dermatitis,hyperlipidemia,oral mucositis,eczema,hyperplasia of prostate,hypertension,prostatitis,type 2 diabetes mellitus,and radiodermatitis.Eight trials reported no adverse events associated with pine pollen,one reported mild gastrointestinal reactions,but symptoms disappeared without special management.There have been an increasing number of publications on pine pollen during the past 20 years.Pharmacological studies have shown many potential benefits,and clinical studies have indicated some positive effects when it is either used as a single herb or as an adjuvant to treat disease.Its use as a topical agent,especially for skin diseases,was notable.展开更多
Male components of the reproduction process in Pinus roxburghii were investigated for their variation in time and space as well as pollination, viz. flowering phenology, pollen production variability and pollen disper...Male components of the reproduction process in Pinus roxburghii were investigated for their variation in time and space as well as pollination, viz. flowering phenology, pollen production variability and pollen dispersal, for five successive years at two different locations （at the lower and higher elevations）. The study reveals that elevation and the hour of the day are the main determi- nants of anthesis and microsporangium dehiscence, because both are related to temperature and humidity. The receptivity of ovulate cone strobili or female strobili occurred earlier at the lower elevation than at the higher elevation, with a longer receptivity period in the latter case. The phenology of male and female cones varied significantly between years and elevations. The determinations of pol- len yield considered various sources of variability, i.e., the number of pollen strobili per branch, strobili per tree, microsporangia per tree and pollen grains per tree. Each of these parameters revealed significant year-to-year and elevation effects. Year-to-year varia- tion in the production of pollen cone and pollen grains with mass production after a three-year period revealed a three-year cycle of masting in pollen production in P. roxburghii. The pollen dispersal decreased quickly with distance from the pollen source. As a con- sequence, a distance of 600 m was proposed as a minimum to prevent contamination by pollen in the management of seed orchards. The results ultimately suggest that the ample production of pollen grains per tree along with flowering synchrony and long dispersal of pollen grains results in homogeneity in large populations.展开更多
基金supported by the Guangxi Bureau of Traditional Chinese Medicine,No.[2009]73the Department of Science and Technology,Guangxi Zhuang Autonomous Region,No.0640203
文摘Previous studies have demonstrated that pine pollen can inhibit cerebral cortical cell apoptosis in mice with arsenic poisoning. The present study sought to detect the influence of pine pollen on apoptosis-related proteins. Immunohistochemistry, western blotting and enzyme-linked immunosorbent assays were used to measure the levels of apoptosis-related proteins in the cerebral cortex of mice with arsenic poisoning. Results indicated that pine pollen suppressed cell apoptosis in the cerebral cortex of arsenic-poisoned mice by reducing Bax, Bcl-2 protein expression and increasing p53 protein expression.
基金The National Natural Science Foundation of China(No.81360684)Guangxi Key Research and Development Plan Project(Gui Ke AB18221095)+2 种基金China National and Regional University Students Innovation and Entrepreneurship Training Scheme Funding(No.201910599012)High-level Talent Research Projects From Youjiang Medical University For Nationalities(No.01002018079)China National and Autonomous Region Innovation Planning Project for University Students in 2020(2020010599030).
文摘Background:To study the anti-inflammatory,analgesic,fatigue resistant and antihypoxia effects of ethanol extract and water extract of pine pollen.Methods:Two different extracts of pine pollen were prepared into there different concentrations,that is 1.5 mg·mL^-1,4.5 mg·mL^-1 and 7.5 mg·mL^-1 respectively.The extract were studied by xylene-induced ear swelling,acetic acid distortion test and hot plate test.The antihypoxia and antifatigue effects were explored by weight-bearing swimming experiment,routine pressure hypoxia tolerance experiment and liver weight coefficient comparison.Results:Through the study of the four pharmacological effects of ethanol extract and water extract,we found that the anti-inflammatory,analgesic,antithyposia and antifatigue effects of ethanol extract were better than that of water extract.Moreover,the experimental effects significantly improved with the increase of the concentration,and the effect of alcohol increased dose group was accurate(P<0.05).Conclusion:Pine pollen has excellent effects of anti-inflammatory,analgesic,antihypoxia and anti-fatigue.Besides,with the increase of drug concentration,effects tend to be more obvious with positive correlation.
文摘The aim of the current study was to investigate the process of microgametogenesis and diagnostic of condition of the Pinus sylvestris male generative system in the tree stands exposed to the influence of Reftinskiy GRES power plant (RGpp) emission during ontogenesis in connection with the level of technogenic pollution. It was detected that in the impact area, smoke emissions from the RGpp in the south-west direction zones of technogenic pollution were formed. Those vary in qualitative composition of the snow pack pollutants and their quantitative characteristics. The content of water insoluble compounds in melt snow water and the compile suspended matter, decreases regularly at the longer distance from the source of air pollutants. The highest content of water soluble compounds in the melt snow water was indicated at the distances of 5, 8 and 14 km from the source of air pollutants, authentically lower in the nearest and farthest sampling points of the snow trials. Scots pine (Pinus sylvestris) pollen significative with high prognostic value in relation to the level of toxic load upon the eco-systems and the condition of male generative system were discovered. It was detected that the significative meanings of pollen with morphological abnormalities decreased, and the meanings of functional significatives increased at the longer distance from the source of air pollutants. Pollen fertility, pollen tube length and reserve substances content significative is negatively related to the presence of micro and macro elements in the snow water;those identify the toxic load level on the ecosystem probably to the highest degree. Pine male gametophyte elimination, while forming in the impact zone of the GRES power plant, takes place at the stage of pollen grain germination as well as pollen tubes’ growth stage.
基金supported by the fund from Beijing University of Chinese Medicine for the Project on Research and Development of Evidence-Based Medicine of Clinical Scientific Research Capacity and International Development in TCM(No.2016-ZXFZJJ-011,No.1000061020008)partially supported by the NCCIH grant(AT001293 with Sub Award No.020468C)funded by Overseas Expertise Project,Ministry of Education of China(MS20180009)。
文摘The objectives of this study are to conduct a comprehensive literature search and bibliometric analysis to identify the breadth and volume of pharmacological and clinical studies on pine pollen(Pinus pollen)and to identify the potential effects and the use of pine pollen.Three Chinese electronic databases and two English electronic databases were searched for pharmacological and clinical studies on pine pollen.Data were extracted and analyzed and included publication year,authors,study type,pharmacological research topics or clinical diseases/conditions,usage and type of preparation,authors’conclusions,and adverse effects.Of 239 publications identified,180 were pharmacological studies,37 were clinical trials,and 22 were reviews.Numbers of publications increased particularly from 2004 onward.The top 10 most frequent topics in pharmacological studies were immune regulation,antisenility,antioxidation,liver protection,inhibiting prostate hyperplasia,inhibiting tumor cell proliferation,lowering blood glucose,lowering blood lipids,antifatigue,and improving intestinal function.The top 10 most frequent clinical diseases treated or where pine pollen was used as an adjuvant were bedsores,diaper dermatitis,hyperlipidemia,oral mucositis,eczema,hyperplasia of prostate,hypertension,prostatitis,type 2 diabetes mellitus,and radiodermatitis.Eight trials reported no adverse events associated with pine pollen,one reported mild gastrointestinal reactions,but symptoms disappeared without special management.There have been an increasing number of publications on pine pollen during the past 20 years.Pharmacological studies have shown many potential benefits,and clinical studies have indicated some positive effects when it is either used as a single herb or as an adjuvant to treat disease.Its use as a topical agent,especially for skin diseases,was notable.
文摘Male components of the reproduction process in Pinus roxburghii were investigated for their variation in time and space as well as pollination, viz. flowering phenology, pollen production variability and pollen dispersal, for five successive years at two different locations （at the lower and higher elevations）. The study reveals that elevation and the hour of the day are the main determi- nants of anthesis and microsporangium dehiscence, because both are related to temperature and humidity. The receptivity of ovulate cone strobili or female strobili occurred earlier at the lower elevation than at the higher elevation, with a longer receptivity period in the latter case. The phenology of male and female cones varied significantly between years and elevations. The determinations of pol- len yield considered various sources of variability, i.e., the number of pollen strobili per branch, strobili per tree, microsporangia per tree and pollen grains per tree. Each of these parameters revealed significant year-to-year and elevation effects. Year-to-year varia- tion in the production of pollen cone and pollen grains with mass production after a three-year period revealed a three-year cycle of masting in pollen production in P. roxburghii. The pollen dispersal decreased quickly with distance from the pollen source. As a con- sequence, a distance of 600 m was proposed as a minimum to prevent contamination by pollen in the management of seed orchards. The results ultimately suggest that the ample production of pollen grains per tree along with flowering synchrony and long dispersal of pollen grains results in homogeneity in large populations.
