Objectives To compare the 2006 World Health Organization (WHO) growth standards and the 2005 China national growth standards for identification of the wasting, stunting, low weight and overweight in infants. Methods Data were drawn from“Infants’feeding and growth”project. Weight-for-length, weight-for-age and length-for-age were derived in z-scores using the two growth references. Stunting was defined as having a length-for-age Z-score less than-2. Low weight was defined as having a weight-for-age Z-score less than-2. Wasting was defined as having a weight-for-length Z-score less than-2. Overweight was defined as having a weight-for-length Z-score more than+2. Results Data of a total of 3909 records from 959 health children aged from 2 to 12 months from June 2008 to May 2009 were analyzed. Of them, 53.88%(2106/3909)were from male and 46.12%(1803/3909)were from female. There was no difference in wasting rate and stunting rate between using two growth references. Fewer infants were identified as low weight by using WHO growth standard than using China growth stan-dard. The results were 0.57%at 0-3 months (0.85%vs.1.42), P>0.05, 0.72%at 4-6 months (0.39%vs. 1.11%) and 0.97%at 7-9 months (0.79% vs.1.76%), P<0.05. They were equivalent at 10-12 months (1.3% vs.1.3%), P=1.00. Oppositely, more infants were identified as overweight by using WHO growth standard than using China growth standard in our study. The results were 2.9 times at 0-3 months (6.54%vs. 3.13%), 2.12 times at 4-6 months (9.02%vs.4.25%) and 1.62 times at 7-9 months (7.11%vs. 4.39%) , P<0.05. It was 1.37 times at 10-12 months(4.84%vs. 3.54%)without statistically significant difference (P>0.05). Con-clusion Some differences were found in low weight and overweight rate by using two growth standards. Infant low weight rate was lower and overweight rate was higher by using WHO growth standard than that using China growth standard.

Objective:To study the relationship between dietary vitamin A intake and plasma vitamin A concentration , and establish the theoretical basis for dietary intake predicting vitamin A nutritional status . Methods:By using cluster sampling , 492 children aged 2-7 years in kindergartens in Banan district of Chongqing were selected .A cross-sectional nutrition and health survey was conducted , including the clinical examination , anthropometry , laboratory test and dietary survey .Results: Among the children surveyed, 229 were boys, and 263 girls, the mean age was (4.54 ±0.87) years, height (107.50 ± 7.20) cm, and weight (18.42 ±3.41) kg, the mean value of plasma vitamin A was (1.04 ±0.30)μmol/L.The prevalence of marginal vitamin A deficiency ( MVAD) was 43.5%.No cases of severe clinical vitamin A deficiency were found (plasma vitamin A≤0.35μmol/L).Clinical examination found no conjunctiva, corneaor skin abnormalities, and no Bitot’s spots.Prevalence of the last two weeks colds were 27.4% (135/492), no diarrhea and other gastrointestinal or digestive diseases were found .The proportion of insufficient dietary vitamin A intake ( <600 μg RE/d) was as high as 50.0%.By using correlation analysis, plasma retinol concentrations were related to dietary vitamin A intake (r=0.162, P<0.001), and to dietary energy intake (r=0.107, P=0.017).After adjustment for the effects of other non-dietary factors on vitamin A deficiency , the multivariate logistic regression showed that vitamin A-rich foods of liver intake=0 g/d (OR=1.95, 95% CI:1.05-3.61, P=0.034), vitamin A-rich fruits intake=0 g/d (OR =1.55, 95% CI: 1.03 -2.33, P =0.034), vitamin A-rich vegetables intake<200 g/d (OR=3.47, 95%CI:1.37-8.75, P=0.009) were important risk factors of vitamin A deficiency .But we had not found the correlation between the intake of meat , eggs and milk and vita-min A deficiency .Conclusion:Dietary factors may be the major risk factor of vitamin A deficiency in the three kindergartens .The dietary vitamin A intakes are significantly related to plasma retinol concentra-tions, and the vitamin A-rich foods intakes can predict the body ’ s vitamin A nutritional status .

OBJECTIVE: To report on a rare case of Neurofibromatosis type 2 (NF2) manifesting as oculomotor nerve palsy and explore its genetic basis. METHODS: A patient with NF2 who had presented at Beijing Ditan Hospital Affiliated to Capital Medical University on July 10, 2021 was selected as the study subject. Cranial and spinal cord magnetic resonance imaging (MRI) was carried out on the patient and his parents. Peripheral blood samples were collected and subjected to whole exome sequencing. Candidate variant was verified by Sanger sequencing. RESULTS: MRI revealed bilateral vestibular Schwannomas, bilateral cavernous sinus meningiomas, popliteal neurogenic tumors, and multiple subcutaneous nodules in the patient. DNA sequencing revealed that he has harbored a de novo nonsense variant of the NF2 gene, namely c.757A>T, which has replaced a codon (AAG) encoding lysine (K) at position 253 with a stop codon (TAG). This has resulted in removal of the Merlin protein encoded by the NF2 gene from position 253 onwards. The variant was not found in public databases. Bioinformatic analysis suggested that the corresponding amino acid is highly conserved. Based on the guidelines from the American College of Medical Genetics and Genomics (ACMG), the variant was rated as pathogenic (PVS1+PS2+PM2_Supporting+PP3+PP4). CONCLUSION The heterozygous nonsense variant c.757A>T (p.K253*) of the NF2 gene probably underlay the disease in this patient with an early onset, atypical but severe phenotype.
Male ; Humans ; Neurofibromatosis 2/genetics* ; Genes, Neurofibromatosis 2 ; Oculomotor Nerve Diseases/genetics* ; Computational Biology ; Genomics ; Mutation

OBJECTIVETo compare the long-term oncological outcomes of laparoscopic and open resection of rectal cancers.

METHODSBetween January, 2003 and December, 2008, 514 patients with rectal cancer were admitted in our hospital, among whom 186 underwent laparoscopic tumor resection and 238 received open radical resection of the tumors. The long-term survival of the patients and the recurrence pattern were compared between the two groups.

RESULTSThe median follow-up of the patients was 48.54∓28.76 months. No significant differences were found between the two groups in the local recurrence rate (3.9% vs 5.5%, P=0.284), 5-year overall survival (69.4% vs 61.3%, P=0.067), or the 5-year disease-free survival rates (67.7% vs 60.7%, P=0.110). Both the 5-year overall survival and progression-free survival of the patients in stage IV were better in the laparoscopic group than in the open surgery group (P<0.05).

CONCLUSIONLaparoscopic resection of rectal cancer can achieve long-term oncological outcomes comparable to those of conventional open surgery.

Aged ; Female ; Humans ; Laparoscopy ; Laparotomy ; Male ; Middle Aged ; Rectal Neoplasms ; surgery ; Retrospective Studies ; Treatment Outcome

After freeze-drying, the ultrastructure of boar sperms was observed by optical and electron microscopy. The in vitro development ability of the sperm was also examined with intracytoplasmic sperm injection (ICSI). The rate of male pronuclear formation was (68.52%), for cleavage (59.17%) and for blastocyst formation (19.16%) of the trehalose group (0.2 mol/L), significantly higher than those of the 50 mmol/L EDTA group (64.59%, 56.26% and 15.62%) and the control group (35.36%, 52.33% and 8.60%) (P < 0.05). After storage for 60, 120 and 180 d at 4 degrees C, no significant difference in the in vitro development was observed (P > 0.05). The male pronuclear, cleavage and blastocyst formation after ICSI with freeze-dried spermatozoa incubated for 1 h was superior than those incubated for 2 h (P < 0.05). No significant differences in the structures after stored at 4 degrees C or -20 degrees C (P > 0.05) were observed between the trehalose group and EDTA group. The percent of B grade freeze-dried boar spermatozoa in the trehalose group was higher than that of the EDTA group (P < 0.05). Based on the ultrastructure observation, main cryogenic damage in freeze-dried boar spermatozoa was swelling, damage or rupture in the sperm acrosome, neck and tail.
Animals ; Freeze Drying ; Male ; Semen Preservation ; methods ; veterinary ; Sperm Injections, Intracytoplasmic ; veterinary ; Spermatozoa ; Swine ; Trehalose ; pharmacology

Objective:To understand the research ability, cognition, and training needs of clinical medical staff in a grade A tertiary hospital in Xinjiang and to analyze the influencing factors.Methods:A convenience sampling method was applied to survey the clinical medical staff of our hospital with a questionnaire including general information, a self-assessment scale of research ability, and a survey of research cognition and training needs. A total of 618 questionnaires were collected with 609 valid returned responses, resulting in an effective return rate of 98.54%. Univariate and multiple linear regression analysis were applied to analyze the influencing factors of the total score of clinical medical staff's research ability.Results:The total score of research ability of 609 clinical medical personnel was 60.73±13.59. The results of multiple linear regression showed that participation in scientific research conferences, enthusiasm for scientific research activities, and the need for scientific research training all had positive effects on the self-assessment of scientific research ability, which together explained 52% of the total variance (adjusted R2=0.520, P<0.001). The top three " very important" options for medical staff research training were data analysis, research design, and research topic selection. Conclusions:Medical staff research skills need to be improved and there is a strong need for research training. Managers should refine scientific research management initiatives and provide hierarchical and targeted scientific research training to improve the overall medical staff's scientific research literacy and research ability, thereby promoting the progress of medical care in hospitals.

Objective:To understand the cognition of research integrity of in-service medical staff in a tertiary hospital in Xinjiang, provide possible reference for research integrity training.Methods:In March 2021, an electronic questionnaire survey was conducted to investigate the knowledge of scientific research integrity of in-service medical staff in a tertiary hospital in Xinjiang. T test and analysis of variance were used for univariate analysis, and multiple linear regression was used for multivariate analysis.Results:550 valid questionnaires were collected in total, and the overall awareness rate of scientific research integrity of in-service medical staff was less than 60%. Univariate analysis showed that there were differences in cognitive score of scientific research integrity among medical staff who participating in different scientific research activities ( P<0.05). Multivariate analysis showed that the educational level of the in-service medical staff, whether they participated in scientific research training, whether they had the qualifications of graduate student supervisor, the interaction between educational level and participation in scientific research training was statistically significant ( P<0.05). LSD test of educational level and participation in scientific research training showed that there was a statistically significant difference in educational level of participation in scientific research training ( P<0.01). Conclusions:The cognition of research integrity on in-service medical staff in a tertiary hospital in Xinjiang need to be enhanced, and their knowledge of research integrity need to be improved. Various measures should be carried out to strengthen the research integrity education and training, so as to improve the level of medical staff’s cognition of research integrity, and improve the medical staff’s attitudes of research integrity.