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Objective:To explore the factors on malnutrition or risk of malnutrition in patients with Alzheimer′s disease (AD)-related cognitive impairment,and to further analyze the association between the severity of behavioral and psychological symptoms in dementia (BPSD) and nutritional status.Methods:The clinical data of 247 patients with AD-related cognitive impairment were collected continuously from the Chinese Imaging, Biomarkers and Lifestyle Study of Alzheimer′s Disease (CIBL) cohort between June 1, 2021 and August 31, 2022. The patients were divided into well-nourished group ( n=128) and malnourished group ( n=119) according to the scores of Mini-Nutritional Assessment scale (MNA). The sociodemographic data (sex, age, body mass index, waist-to-hip ratio, education level), the medical history of olfactory dysfunction, combination with more than two chronic diseases, and gastrointestinal diseases, presenting BPSD, and the scores of the Mini-Mental State Examination (MMSE), Montreal Cognitive Assessment (MoCA), Neuropsychiatric Inventory (NPI), Activity of Daily Living (ADL), Caregiver Burden Inventory (CBI) and Dietary Diversity Score (DDS) were compared between the two groups. The factors with statistically significant differences in hypothesis test and univariate Logistic regression analysis were enrolled in multivariate Logistic regression analysis to further identify independent factors associated with malnutrition in patients with AD-related cognitive impairment. Furthermore, the association between NPI scores and MNA scores was analyzed by Spearman′s rank correlation test. Results:Compared with those in the well-nourished group, patients in the malnourished group had higher age [(66.70±7.01) years vs (69.14±8.87) years, t=-2.39, P=0.018], lower body mass index [(24.68±2.84) kg/m 2vs (22.69±3.63) kg/m 2, t=4.78, P<0.001], and higher proportion of presenting BPSD [22.66% (29/128) vs 76.47% (91/119), χ 2=71.49, P<0.001]; lower scores of MMSE, MoCA, and DDS [24.27±4.69 vs 18.95±8.40, t=6.09; 20.29±5.18 vs 14.55±8.12, t=6.56; 8.00 (8.00, 9.00) vs 8.00 (7.00, 8.00), Z=-4.66; all P<0.001], and higher scores of NPI, ADL and CBI [1.00 (0, 6.00) vs 10.00 (2.00, 25.00), Z=-6.50; 20.00 (20.00, 22.00) vs 27.00 (20.00, 40.00), Z=-7.08; 1.00 (0, 14.75) vs 12.00 (2.00, 35.00), Z=-5.13; all P<0.001]. There were no statistically significant differences in the sex, waist-to-hip ratio, education level, and the medical history of olfactory dysfunction, combination with more than two chronic diseases, and gastrointestinal diseases between the two groups. The multiple Logistic regression analysis demonstrated that the decreased body mass index ( OR=0.79, 95% CI 0.70-0.89, P<0.001), presenting BPSD ( OR=7.84, 95% CI 3.67-16.73, P<0.001), elevated ADL scores ( OR=1.15, 95% CI 1.06-1.24, P<0.001) and CBI scores ( OR=0.98, 95% CI 0.97-1.00, P=0.026), and decreased scores of DDS ( OR=0.66, 95% CI 0.51-0.84, P=0.001) were independently associated with malnutrition in patients with AD-related cognitive impairment. The MNA scores were significantly negatively associated with NPI scores ( r=-0.483,95% CI -0.58--0.38, P<0.001). Conclusions:The decreased body mass index, dietary diversity, and ability of daily living, and presenting BPSD and heavy burden of caregivers can independently contribute to the malnutrition in patients with AD-related cognitive impairment. The more serious the BPSD, the worse the nutritional status.
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Objectives:To analyze the potential biomarkers of behavioral and psychological symptoms of dementia (BPSD) in patients with Alzheimer′s disease (AD) continuum.Methods:A prospective cohort study was consecutively conducted on 179 patients with AD continuum (135 presented with BPSD, 44 patients without BPSD as control) from Capital Medical University, Beijing Tiantan Hospital, the Chinese imaging biomarkers and lifestyle cohort between January 1, 2021 and December 31, 2022. Gender, age, body max index, education level, diagnosis, the apolipoprotein E epsilon4 allele (APOE ε4) carrier status, the scores of the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA), cerebrospinal fluid (CSF) AD-related pathological biomarkers (Aβ 42, Aβ 40, Aβ 42/40, tTau, pTau181), and blood biomarkers (white blood cell count, red blood cell count, hemoglobin, platelet, total bilirubin, albumin, total cholesterol, triglyceride, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, fasting glucose, erythrocyte sedimentation rate, homocysteine, vitamin B 12, folate) were compared between the two groups by using hypothesis testing and univariate logistic regression analysis. Multivariate logistic regression analysis was used to analyze the potential biomarkers associated with BPSD in patients with AD. Results:Among the 179 patients with AD continuum in the final analysis, 77 patients were men, 102 cases were women; 35 patients were identified with mild cognitive impairment (MCI) due to AD and 144 patients with AD dementia stage, the mean age was (66.54±9.75) years. Compared with those in control group, patients with BPSD had lower cerebrospinal fluid (CSF) Aβ 40 and blood hemoglobin levels [7.08 (4.42, 15.42) vs 9.62 (6.45, 12.12) pg/L, (132.70±13.37) vs (138.80±14.38) g/L] ( U=-1.856, t=2.579, P<0.05). The levels of CSF Aβ 40 ( OR=0.030, 95% CI: 0.001-0.760) and blood hemoglobin ( OR=0.051, 95% CI: 0.004-0.670) were independently negatively associated with BPSD in patients with AD continuum (both P<0.05). Conclusion:The decreased levels of CSF Aβ 40 and blood hemoglobin could be considered as potential biomarkers in detecting BPSD in patients with AD continuum.
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Functional Science Lab.Of Jining Medical College has attempted to reform the management system,share the resource,improve the resource utilization,exceed the limits of science,modify the contents of experimental courses,innovate the teaching methods,pay attention to teacher training.Through longtime research and practice,we have gained the significant achievements.
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Designing experimentation is the most important phase in function experimentation teaching,and a simulation process of science research.Students choose the topic freely,design schema and practice by themselves.Based on pathophysilolgy,the article has practiced functional designing experimentation among the students of clinical medicine in 2006 grade.Results indicated that the practice of designing experimentation is helpful for raising general diathesis and innovative ability of students,and it will be the focus of function experimentation innovation in future.
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To investigate the effect of P53 protein accumulation and p53 gene mutation in the pathogenesis of glioma and to study the role of MDM2, P53 and P16 protein in glioma formation and progression and their relationship with each other, LSAB immunohistochemical staining method and non-isotopic PCR-SSCP techniques were used to detect the expression of MDM2, P53 and P16 pro tein and p53 gene mutation in 48 cases of gliomas. The results showed that the positive expression rate of MDM2, P53 and the negative rate of P16 was 22.9 %, 41.7 % and 60.4 %, respectively.The latter two in high grade (grade Ⅲ , Ⅳ) gliomas had a significantly higher rate than in the low grade (grade Ⅱ ) gliomas. Moreover, the co-expression of MDM2 and P53 protein was confirmed in only 1 of 48 cases. No significant difference was found in the rate of the expression of MDM2 between high grade and low grade gliomas (P＞0.1) . PCR SSCP results showed that mutation of 5-8 exons of p53 gene was detected in 17 out of 48 cases (35.42 %) . Mutation was detected in 16of 20 cases of positive p53 expression, and another one was detected in 28 cases of negative expression cases. The correlation between p53 mutation and p53 immunopositivity was observed in 89.6% of the cases. P53 gene mutation and the level of MDM2, P53 and P16 protein were not related to age, gender of the patients, tumor location and size. It is concluded that the mutation of p53 and deletion of p16 might play important roles in the tumorigenesis of gliomas and it was significantly associated with the grade of tumor differentiation. P53 protein accumulation can indirectly reflect p53 mutation. MDM2 amplification and overexpression might be an early event in the growth of human gliomas.