In Garze Tibetan autonomous prefecture inSichuan province, China, 41 echinococciasis patientswho had received surgical treatment were recruitedin the study, and 82 health persons who had livedin Garze for at least 10 ...In Garze Tibetan autonomous prefecture inSichuan province, China, 41 echinococciasis patientswho had received surgical treatment were recruitedin the study, and 82 health persons who had livedin Garze for at least 10 years were selected ascontrols. The serum levels of Zn, Se and Cu of thecases and controls were detected. The resultsshowed that most echinococciasis cases weredistributed in Shiqu county （17.1%, 7/41）, and only1 case was distributed in Yajiang county （2.4%）. Themale to female ratio of the cases was 1：1.56. Theechinococciasis patients were mainly aged 30-39years （36.59%, 15/41）. And, the cases aged 20-49years accounted for 68.29% （28/41）. Comparedwith health controls, the serum levels of Zn and Seof the cases significantly declined. However, theserum level of Cu of the cases had no significantlychange. It was confirmed that the serum levels ofZn and Se were interrelated with the prevalence ofechinococciasis.展开更多
The study of the relationship between trace element and health and disease has attracted more and more interests of scientists. As well known there exist complex interaction between the trace elements, and the trace e...The study of the relationship between trace element and health and disease has attracted more and more interests of scientists. As well known there exist complex interaction between the trace elements, and the trace elements and other substances, so the trace element research must be involved to the com-prehensive effect of multifactors, other than single element. We determined the contents of fifteen trace elements in serum from thirty patients with liver cancer and thirty healthy adults by ICP-AES analysis. The obtained data were analysed statistically by not only routine statistical test bat also multi-variate discrimination analysis, multi-variate stepwise regression and non-linear mapping algorithm. It is hoped that it can provide some valuable informations for investigation on relationship betwecn trace elements and cancer.展开更多
In public health studies limited volumes of blood are often collected and stored for future hypothesis testing. Archived samples are irreplaceable and therefore it is valuable to develop analytical techniques that req...In public health studies limited volumes of blood are often collected and stored for future hypothesis testing. Archived samples are irreplaceable and therefore it is valuable to develop analytical techniques that require minimal sample vo-lume. This work describes the measurement of trace elements Mg, Cu, Fe, Zn and ultratrace elements Cd, Co, Mn, Pb in limited quantity (150 μL) human serum or plasma samples. Samples were digested using a hotblock and analyzed using inductively coupled plasma mass spectrometry (ICP-MS). The analytical method was evaluated using a quadrupole (Q) and sector field high resolution (SF) instrument to analyze trace elements in Seronorm? quality control serum material. The method was used to analyze 1888 blinded human plasma samples which were archived for the National Cancer Institute from the Nutrition Intervention Trial in Linxian China. The inductively coupled plasma method was capable of accurately analyzed limited quantity samples of human serum and plasma for the trace elements Mg, Cu, Fe Zn and the ultra trace elements Co, Mn and Pb. The concentration of Cd in human plasma samples was below the level of detection for 75% of the samples analyzed.展开更多
Visual functions and nutrition metabolic characteristics werestudied in 8 subjects(16 eyes)with tobacco-toxic optic neuropathy(TTON).Their visual functions tested by psychophysical and electrophysiologicmethods showed...Visual functions and nutrition metabolic characteristics werestudied in 8 subjects(16 eyes)with tobacco-toxic optic neuropathy(TTON).Their visual functions tested by psychophysical and electrophysiologicmethods showed that:1.central vision diminished in 16 eyes,2.dyschromatopsias were found in 14 tested eyes,3.bilateral symmetricalcentral or cecocentral scotomas were the visual field characteristics in allcases,4.PVEP were severe abnormal in 3 spatial frequencies in all cases and56.3% of 15' checkboard ...展开更多
Aim: To evaluate the early and late long-term effects of vasectomy on the serum and prostatic fluid trace elements.Methods: In 37 vasectomized and 25 non-vasectomized (control) men, the Zn, Cd and Cu levels in the ser...Aim: To evaluate the early and late long-term effects of vasectomy on the serum and prostatic fluid trace elements.Methods: In 37 vasectomized and 25 non-vasectomized (control) men, the Zn, Cd and Cu levels in the serum andprostatic fluid were measured by means of inductively coupled plasma-atomic emission spectroscopy (ICP-AES). Re-suits: No significant difference was found in the prostatic Zn, Cd and Cu levels between the vasectomized and controlgroup. The Zn level in the semm were significantly lower in the vasectomized men than in the controls (11.04 and 13.54 umol/L, respectively; P < 0.05), while the serum Cd and Cu levels were not significantly different between thetwo groups. Conclusion: Vasectomy may decrease the serum, but not the prostatic Zn levels. Its pathophysiologicalsignificance is worthy of further investigation.展开更多
Objective: To find some objective criteria for Syndrome Differentiation of Kidney Deficiency by analysing the relationship between Kidney and hearing as well as serum trace elements. Methods: The hearing and serum tra...Objective: To find some objective criteria for Syndrome Differentiation of Kidney Deficiency by analysing the relationship between Kidney and hearing as well as serum trace elements. Methods: The hearing and serum trace element of 73 cases of chronic nephropathy were measured. Results: The incidence of hearing damage in high frequency was 68. 5% with a mean hypoacusis of 35. 1 ±6. 1 dB, while in the 55 patients of Kidney deficiency type, the incidence of hearing damage in high frequency was 83. 6%, which was significantly higher than that in patients without Kidney Deficiency. The serum levels of trace elements (iron and zinc) in patients with Kidney Deficiency were lower than the normal level and that in patients without Kidney Deficiency, and the decrease of serum iron was directly proPOrtional to the degree of hearing damage. Conclusion: There was close relationship between Kidney Deficiency and hearing damage as well as the serum levels of iron and zinc.展开更多
基金financially supported by the Grant for the National Major Science and Technology Project(grant No.2012ZX10004-220,No.2008ZX10004-011)
文摘In Garze Tibetan autonomous prefecture inSichuan province, China, 41 echinococciasis patientswho had received surgical treatment were recruitedin the study, and 82 health persons who had livedin Garze for at least 10 years were selected ascontrols. The serum levels of Zn, Se and Cu of thecases and controls were detected. The resultsshowed that most echinococciasis cases weredistributed in Shiqu county （17.1%, 7/41）, and only1 case was distributed in Yajiang county （2.4%）. Themale to female ratio of the cases was 1：1.56. Theechinococciasis patients were mainly aged 30-39years （36.59%, 15/41）. And, the cases aged 20-49years accounted for 68.29% （28/41）. Comparedwith health controls, the serum levels of Zn and Seof the cases significantly declined. However, theserum level of Cu of the cases had no significantlychange. It was confirmed that the serum levels ofZn and Se were interrelated with the prevalence ofechinococciasis.
文摘The study of the relationship between trace element and health and disease has attracted more and more interests of scientists. As well known there exist complex interaction between the trace elements, and the trace elements and other substances, so the trace element research must be involved to the com-prehensive effect of multifactors, other than single element. We determined the contents of fifteen trace elements in serum from thirty patients with liver cancer and thirty healthy adults by ICP-AES analysis. The obtained data were analysed statistically by not only routine statistical test bat also multi-variate discrimination analysis, multi-variate stepwise regression and non-linear mapping algorithm. It is hoped that it can provide some valuable informations for investigation on relationship betwecn trace elements and cancer.
文摘In public health studies limited volumes of blood are often collected and stored for future hypothesis testing. Archived samples are irreplaceable and therefore it is valuable to develop analytical techniques that require minimal sample vo-lume. This work describes the measurement of trace elements Mg, Cu, Fe, Zn and ultratrace elements Cd, Co, Mn, Pb in limited quantity (150 μL) human serum or plasma samples. Samples were digested using a hotblock and analyzed using inductively coupled plasma mass spectrometry (ICP-MS). The analytical method was evaluated using a quadrupole (Q) and sector field high resolution (SF) instrument to analyze trace elements in Seronorm? quality control serum material. The method was used to analyze 1888 blinded human plasma samples which were archived for the National Cancer Institute from the Nutrition Intervention Trial in Linxian China. The inductively coupled plasma method was capable of accurately analyzed limited quantity samples of human serum and plasma for the trace elements Mg, Cu, Fe Zn and the ultra trace elements Co, Mn and Pb. The concentration of Cd in human plasma samples was below the level of detection for 75% of the samples analyzed.
基金This study was supported by Zhongshan ophthalmic Center,SUMS.
文摘Visual functions and nutrition metabolic characteristics werestudied in 8 subjects(16 eyes)with tobacco-toxic optic neuropathy(TTON).Their visual functions tested by psychophysical and electrophysiologicmethods showed that:1.central vision diminished in 16 eyes,2.dyschromatopsias were found in 14 tested eyes,3.bilateral symmetricalcentral or cecocentral scotomas were the visual field characteristics in allcases,4.PVEP were severe abnormal in 3 spatial frequencies in all cases and56.3% of 15' checkboard ...
文摘Aim: To evaluate the early and late long-term effects of vasectomy on the serum and prostatic fluid trace elements.Methods: In 37 vasectomized and 25 non-vasectomized (control) men, the Zn, Cd and Cu levels in the serum andprostatic fluid were measured by means of inductively coupled plasma-atomic emission spectroscopy (ICP-AES). Re-suits: No significant difference was found in the prostatic Zn, Cd and Cu levels between the vasectomized and controlgroup. The Zn level in the semm were significantly lower in the vasectomized men than in the controls (11.04 and 13.54 umol/L, respectively; P < 0.05), while the serum Cd and Cu levels were not significantly different between thetwo groups. Conclusion: Vasectomy may decrease the serum, but not the prostatic Zn levels. Its pathophysiologicalsignificance is worthy of further investigation.
文摘Objective: To find some objective criteria for Syndrome Differentiation of Kidney Deficiency by analysing the relationship between Kidney and hearing as well as serum trace elements. Methods: The hearing and serum trace element of 73 cases of chronic nephropathy were measured. Results: The incidence of hearing damage in high frequency was 68. 5% with a mean hypoacusis of 35. 1 ±6. 1 dB, while in the 55 patients of Kidney deficiency type, the incidence of hearing damage in high frequency was 83. 6%, which was significantly higher than that in patients without Kidney Deficiency. The serum levels of trace elements (iron and zinc) in patients with Kidney Deficiency were lower than the normal level and that in patients without Kidney Deficiency, and the decrease of serum iron was directly proPOrtional to the degree of hearing damage. Conclusion: There was close relationship between Kidney Deficiency and hearing damage as well as the serum levels of iron and zinc.
