The endocrine changes of cancer patients on initial confirmed diagnosis and during chemotherapy havebeen gradually realized and clarified, as well as the dependences of different tumors on corresponding hormones. The ...The endocrine changes of cancer patients on initial confirmed diagnosis and during chemotherapy havebeen gradually realized and clarified, as well as the dependences of different tumors on corresponding hormones. The prevalent endocrinotherapy suppresses tumor progression through downregulating dependent hormone level or completely inhibitting its combination with receptors. Because of the different and even antagonistic mechanisms, endocrinotherapy should not be used with chemotherapy at the same time, or it will reduce the chemotherapeutic efficacy, which is a widely accepted principle in clinic.展开更多
Objective To investigate the expression of cytokeratin,actin and hCG,E2 and P of human hacthed blastocysts in the model.Methods Human hatched blastocysts were co-cultured with human endometrial decidualization stromal...Objective To investigate the expression of cytokeratin,actin and hCG,E2 and P of human hacthed blastocysts in the model.Methods Human hatched blastocysts were co-cultured with human endometrial decidualization stromal cell monolayer.The process of orientation,attachment,outgrowth and invasion in morphology were observed.Immunofluorescence staining for cytokeratin and actin,immunofluorescence measurement of hCG and radioimmunoassay measurement of E2 and P were performed.Results Blastocysts attached to stromal cell layer after 5h in co-culture.After 24h in co-culture,the trophoblast protruded from two opposite poles of the blastocyst and underwent outgrowth into the stromal cell monolayer,blastocyst became bigger and invaded finally into the stromal cells.After 48h in co-culture,cytokeratin staining was only visible in trophoblast but not stromal cells,actin staining was visible in both of trophoblast and stromal cells with distinct conformation and structure.Stromal cells had prominent linear actin filaments,aligned along the long axis of the cells.Cytokeratin staining in trophoblast cells was localized in short filaments arranged in a mesh.hCG,E2 and P levels in the supernate of stromal cell-blastocyst co-culture were higher than the supernate from blastocyst cultured only （P〈0.01）.Conclusion An implantation model for the reflection of the process of human blastocysts attachment,outgrowth and invasion into stromal cells has been established in vitro.Cytokeratin,actin and hCG,E2 and P take place corresponding changes in the human implantation blastocyst cells.展开更多
Objective: To evaluate the effect of Zhuchun pill (ZCP) on senile Kidney-Yang Deficiency (KYD). Methods: By single blind method, 45 elderly males with KYD were divided randomly into the ZCP group (treated by ZCP) and ...Objective: To evaluate the effect of Zhuchun pill (ZCP) on senile Kidney-Yang Deficiency (KYD). Methods: By single blind method, 45 elderly males with KYD were divided randomly into the ZCP group (treated by ZCP) and the control group (treated by placebo, starch capsule) and treated for 3 months.Results: ZCP could greatly improve the main symptoms of KYD, P < 0. 01 in comparison with the control group. After treatment, in the ZCP group, the 3H-TdR lymphocyte transformation rate, levels of serum C3,IgA, IgD, IgG and IgM, superoxide dismutase, plasma adrenocortical hormone, testosterone and cyclic adenosine monophosphate all increased, P < 0. 01, and plasma lipid peroxide decreased, P < 0. 01. While in the control group, no remarkable change was found in these parameters. Conclusion: ZCP could improve the KYD through regulating the immunity, endocrine function and scavenging the free radicals in organism.展开更多
Background Over one million soldiers were treated for battle- or training-fatigue during World War I1. Of all ground combat troops, 37% were discharged for psychiatric reasons due to fatigue. The neuroendocrinological...Background Over one million soldiers were treated for battle- or training-fatigue during World War I1. Of all ground combat troops, 37% were discharged for psychiatric reasons due to fatigue. The neuroendocrinological and immunological systems played important roles in the work-related fatigue of military personnel. The aim of this study was to investigate the characteristics of fatigue associated with military operations, and we observed changes in the regulatory functions of the neuroendocrinological and immunological systems that may provide theoretical support for improving the combat effectiveness of armies. Methods A total of 240 soldiers from the Field Artillery regiment were selected as subjects. Researchers and subjects received training before participating in the study. Data of the subjects＇ medical histories, physical examinations, scores on a fatigue assessment scale, and assessments of pituitary-adrenal hormones （adrenal cortical hormone （ACTH）, cortical hormone （F）, and 24-hour urine-free cortisol （UFC））, pituitary-gonadal hormones （luteinizing hormone （LH）, follicle-stimulating hormone （FSH）, testosterone, estradiol （E2）, and prolactin （PRL））, pituitary-thyroid hormones （thyroid-stimulating hormone （TSH）, thyroxine （TT4）, triiodothyronine （TT3）, free thyroxine （FT4）, and free triiodothyronine （FT3））, and cellular immune parameters （CD3~, CD4~, CD8~, CD4~/CD8＋, B, and NK cells） were investigated before and after large-scale and high-intensity field exercises. Data were statistically analyzed with Student＇s t test using SPSS software （version 13.0）, and P values 〈0.05 were deemed to be significant. Results After the high-intensity military training, the scores on the fatigue scale reflected significant increases of feeling of unpleasantness among soldiers. Additionally, the symptom checklist showed notable increases in somatization scores and significant decreases in psychoticism scores. After intensive military work, levels of plasma ACTH, F, and UFC of soldiers were decreased （P 〈0.01）. The level of testosterone decreased significantly after the maneuver （（23.51_＋6.49） versus （18.89_＋5.89） nmol/L; P 〈0.001）, whereas the thyroid function （＇1-1-3, FT4, and FT3） was markedly increased after the maneuver （P 〈0.01）. The number of CD3~, CD4~, CD4~/CD8~ cells, and B lymphocytes were decreased （P 〈0.05）, and NK cells were increased （P 〈0.001） after the maneuver. Conclusions Following high-intensity military operations, the psychological tolerance of soldiers was depressed. And the hypoadrenocorticism （the functional decreases of hypothalamic-pituitary-gonadal and abnormal pituitary-thyroid axis） contributed to the increased levels of fatigue. Hypoimmunity may increase the susceptibility to diseases after high-intensity military operations.展开更多
Ioxynil, a phenolic herbicide, is known to exert thyroid hormone （TH） disrupting activity by interfering with TH-binding to plasma proteins and a step of the cellular TH-signaling pathway in restricted animal specie...Ioxynil, a phenolic herbicide, is known to exert thyroid hormone （TH） disrupting activity by interfering with TH-binding to plasma proteins and a step of the cellular TH-signaling pathway in restricted animal species. However, comparative studies are still lacking on the TH disruption. We investigated the interaction of [125I] ioxynil with serum proteins from rainbow trout, bullfrog, chicken, pig, rat, and mouse, using native polyacrylamide gel electrophoresis. Candidate ioxynil-binding proteins, which included lipoproteins, albumin and transthyretin （TTR）, differed among the vertebrates tested. Rainbow trout and bullfrog tadpole serum had the lowest binding activity for ioxynil, whereas the eutherian serum had the highest binding activity. The cellular uptake of, and response to, ioxynil were suppressed by rat serum greater than by tadpole serum. The cellular uptake of [125I]ioxynil competed strongly with phenols with a single ring, but not with THs. Our results suggested that ioxynil interferes with TH homeostasis in plasma and with a step of cellular TH-signaling pathway other than TH-uptake system, in a species-specific manner.展开更多
文摘The endocrine changes of cancer patients on initial confirmed diagnosis and during chemotherapy havebeen gradually realized and clarified, as well as the dependences of different tumors on corresponding hormones. The prevalent endocrinotherapy suppresses tumor progression through downregulating dependent hormone level or completely inhibitting its combination with receptors. Because of the different and even antagonistic mechanisms, endocrinotherapy should not be used with chemotherapy at the same time, or it will reduce the chemotherapeutic efficacy, which is a widely accepted principle in clinic.
基金a Science and Technology Supports Program of Hebei Province (05276101-17)
文摘Objective To investigate the expression of cytokeratin,actin and hCG,E2 and P of human hacthed blastocysts in the model.Methods Human hatched blastocysts were co-cultured with human endometrial decidualization stromal cell monolayer.The process of orientation,attachment,outgrowth and invasion in morphology were observed.Immunofluorescence staining for cytokeratin and actin,immunofluorescence measurement of hCG and radioimmunoassay measurement of E2 and P were performed.Results Blastocysts attached to stromal cell layer after 5h in co-culture.After 24h in co-culture,the trophoblast protruded from two opposite poles of the blastocyst and underwent outgrowth into the stromal cell monolayer,blastocyst became bigger and invaded finally into the stromal cells.After 48h in co-culture,cytokeratin staining was only visible in trophoblast but not stromal cells,actin staining was visible in both of trophoblast and stromal cells with distinct conformation and structure.Stromal cells had prominent linear actin filaments,aligned along the long axis of the cells.Cytokeratin staining in trophoblast cells was localized in short filaments arranged in a mesh.hCG,E2 and P levels in the supernate of stromal cell-blastocyst co-culture were higher than the supernate from blastocyst cultured only （P〈0.01）.Conclusion An implantation model for the reflection of the process of human blastocysts attachment,outgrowth and invasion into stromal cells has been established in vitro.Cytokeratin,actin and hCG,E2 and P take place corresponding changes in the human implantation blastocyst cells.
文摘Objective: To evaluate the effect of Zhuchun pill (ZCP) on senile Kidney-Yang Deficiency (KYD). Methods: By single blind method, 45 elderly males with KYD were divided randomly into the ZCP group (treated by ZCP) and the control group (treated by placebo, starch capsule) and treated for 3 months.Results: ZCP could greatly improve the main symptoms of KYD, P < 0. 01 in comparison with the control group. After treatment, in the ZCP group, the 3H-TdR lymphocyte transformation rate, levels of serum C3,IgA, IgD, IgG and IgM, superoxide dismutase, plasma adrenocortical hormone, testosterone and cyclic adenosine monophosphate all increased, P < 0. 01, and plasma lipid peroxide decreased, P < 0. 01. While in the control group, no remarkable change was found in these parameters. Conclusion: ZCP could improve the KYD through regulating the immunity, endocrine function and scavenging the free radicals in organism.
文摘Background Over one million soldiers were treated for battle- or training-fatigue during World War I1. Of all ground combat troops, 37% were discharged for psychiatric reasons due to fatigue. The neuroendocrinological and immunological systems played important roles in the work-related fatigue of military personnel. The aim of this study was to investigate the characteristics of fatigue associated with military operations, and we observed changes in the regulatory functions of the neuroendocrinological and immunological systems that may provide theoretical support for improving the combat effectiveness of armies. Methods A total of 240 soldiers from the Field Artillery regiment were selected as subjects. Researchers and subjects received training before participating in the study. Data of the subjects＇ medical histories, physical examinations, scores on a fatigue assessment scale, and assessments of pituitary-adrenal hormones （adrenal cortical hormone （ACTH）, cortical hormone （F）, and 24-hour urine-free cortisol （UFC））, pituitary-gonadal hormones （luteinizing hormone （LH）, follicle-stimulating hormone （FSH）, testosterone, estradiol （E2）, and prolactin （PRL））, pituitary-thyroid hormones （thyroid-stimulating hormone （TSH）, thyroxine （TT4）, triiodothyronine （TT3）, free thyroxine （FT4）, and free triiodothyronine （FT3））, and cellular immune parameters （CD3~, CD4~, CD8~, CD4~/CD8＋, B, and NK cells） were investigated before and after large-scale and high-intensity field exercises. Data were statistically analyzed with Student＇s t test using SPSS software （version 13.0）, and P values 〈0.05 were deemed to be significant. Results After the high-intensity military training, the scores on the fatigue scale reflected significant increases of feeling of unpleasantness among soldiers. Additionally, the symptom checklist showed notable increases in somatization scores and significant decreases in psychoticism scores. After intensive military work, levels of plasma ACTH, F, and UFC of soldiers were decreased （P 〈0.01）. The level of testosterone decreased significantly after the maneuver （（23.51_＋6.49） versus （18.89_＋5.89） nmol/L; P 〈0.001）, whereas the thyroid function （＇1-1-3, FT4, and FT3） was markedly increased after the maneuver （P 〈0.01）. The number of CD3~, CD4~, CD4~/CD8~ cells, and B lymphocytes were decreased （P 〈0.05）, and NK cells were increased （P 〈0.001） after the maneuver. Conclusions Following high-intensity military operations, the psychological tolerance of soldiers was depressed. And the hypoadrenocorticism （the functional decreases of hypothalamic-pituitary-gonadal and abnormal pituitary-thyroid axis） contributed to the increased levels of fatigue. Hypoimmunity may increase the susceptibility to diseases after high-intensity military operations.
基金supported by the Grant-in Aid of Science Research(C) (No. 20510062 to K. Yamauchi) from Japan Society for Promotion of Science
文摘Ioxynil, a phenolic herbicide, is known to exert thyroid hormone （TH） disrupting activity by interfering with TH-binding to plasma proteins and a step of the cellular TH-signaling pathway in restricted animal species. However, comparative studies are still lacking on the TH disruption. We investigated the interaction of [125I] ioxynil with serum proteins from rainbow trout, bullfrog, chicken, pig, rat, and mouse, using native polyacrylamide gel electrophoresis. Candidate ioxynil-binding proteins, which included lipoproteins, albumin and transthyretin （TTR）, differed among the vertebrates tested. Rainbow trout and bullfrog tadpole serum had the lowest binding activity for ioxynil, whereas the eutherian serum had the highest binding activity. The cellular uptake of, and response to, ioxynil were suppressed by rat serum greater than by tadpole serum. The cellular uptake of [125I]ioxynil competed strongly with phenols with a single ring, but not with THs. Our results suggested that ioxynil interferes with TH homeostasis in plasma and with a step of cellular TH-signaling pathway other than TH-uptake system, in a species-specific manner.
