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Objective@#To analyze the height changes among children who had received subsidies of the National Nutrition Improvement Program for Rural Compulsory Education Students (NNIPRCES) by comparing data from the year of 2012 and 2017.@*Methods@#Among 699 counties where NNIPRCES was implemented, at least 10% of elementary schools and primary middle schools with different food supply modes (school canteen meals, company meals, and mix meals) in the county were selected randomly. Forty students from one or two classes from each grade (grade 1 to grade 9) were randomly selected, to ensure equal proportion of boys and girls in each grade were surveyed, data on height from 1 655 793 students measured in 2012 were compared with 1 419 281 students measured in 2017. Height was measured by metal height pole within 0.1 cm accuracy.@*Results@#From 2012 to 2017, the average increase of height in boys and girls aged 6-15 years was 1.9 and 2.0 cm, respectively. Among them, maximum increment was found in boys at the age of 13 years and in girls at the age of 12 years, respectively, which was 3.0 and 2.8 cm. The average increase in boys from the central and western region was 2.1 and 2.2 cm, respectively, while increase in girls from the central and western region was both 2.2 cm. Compared with the results from 2012, height of boys with the 5th, 50th and 95th height percentiles in 2012 increased by 1.7, 2.0 and 2.1 cm, respectively in 2017, while the increase in girls was 2.1, 2.0 and 2.2 cm, respectively. The average increment of western students with the 5th and 95th height percentiles was higher than those of students from the central region.@*Conclusion@#The average height of students has increased after the implementation of NNIPRCES. However, the development was unbalanced between the central and western region, which requires more targeted intervening strategies to improve the nutritional status of students.
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Objective To observe the c linical effect of scalp acupuncture combined with swallowing and speech therapeutic instrument for the treatment of post-stroke dysphagia. Methods Sixty-eight patients with post-stroke dysphagia were randomly divided into treatment group (N = 34)and control group (N = 34). Both groups were given the internal medicine treatment for lowering blood lipids,stabilizing plaque,and nourishing nerves,and took rehabilitation training. And additionally,the treatment group was given scalp acupuncture therapy and the treatment with swallowing and speech therapeutic instrument,and the control group was given the treatment with s wallowing speech therapeutic instrument alone. Two weeks constituted one treatment course, and the two groups were treated for 4 weeks. The scores of Standardized Swallowing Assessment(SSA) and Swallowing Quality of Life Instrument (SWAL-QOL) of the two groups were observed before and after treatment, and then the curative effects were evaluated by Saito 7-grade dysphagia assessment method. Results (1)Till the end of the trial,7 cases of the 68 patients were excluded for transferring to other departments or loss to follow-up. Of the 7 excluded cases, 3 cases were from the treatment group and 4 were from the control group. (2) The total effective rate of the treatment group was 90.32%and that of the control group was 66.67%,the difference being significant(P < 0.05).(3)After treatment,SSA scores of the 2 groups were decreased(P < 0.01)and SWAL-QOL scores were increased (P < 0.01),and the effect on improving SSA scores and SWAL-QOL scores in the treatment group was superior to that in the control group (P < 0.01). Conclusion Both groups can relieve dysphagia and improve the quality of life of post-stroke dysphagia patients,and the scalp acupuncture combined with swallowing and speech therapeutic instrument is more effective for the treatment of post-stroke dysphagia.
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<p><b>AIM</b>To study the modulation of extracellular pH on the voltage-gated potassium currents (I(Kv)) in isolated pulmonary artery smooth muscle cells (PASMCs).</p><p><b>METHODS</b>I(Kv) was recorded using whole-cell patch clamp technique under the external solutions with different pH. The electrophysiological characteristics of I(Kv) were then analyzed.</p><p><b>RESULTS</b>(1) As compared to the normoxic group, I(K), decreased under acidic condition. When the extracellular pH were 7.0, 6.5, 6.0, the peak currents at a potential of +60 mV were inhibited by 16.93% +/- 2.47% (P < 0.01), 33.03% +/- 2.13% (P < 0.01), 41.59% +/- 6.53% (P < 0.01) respectively, and the current-voltage relationship (I/V) curve shifted to the right. (2) When the extracellular pH was 7.0, 6.5, 6.0, the voltage-depended Gk-Em was shifted to the direction of positive and the activation was sped up.</p><p><b>CONCLUSION</b>The results suggest that with the development of hypoxic pulmonary vasoconstriction (HPV), extracellular pH may take part in the modulation of Kv channels partly, then make the cell depolarized and decrease the Kv currents, this will lead to open the L-type calcium channel and contract the pulmonary artery smooth muscle. It may be one of the mechanisms that hypoxic leads to HPV and finally accelerate the development of HPV.</p>