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Non-conventional yeasts such as Yarrowia lipolytica, Pichia pastoris, Kluyveromyces marxianus, Rhodosporidium toruloides and Hansenula polymorpha have proven to be efficient cell factories in producing a variety of natural products due to their wide substrate utilization spectrum, strong tolerance to environmental stresses and other merits. With the development of synthetic biology and gene editing technology, metabolic engineering tools and strategies for non-conventional yeasts are expanding. This review introduces the physiological characteristics, tool development and current application of several representative non-conventional yeasts, and summarizes the metabolic engineering strategies commonly used in the improvement of natural products biosynthesis. We also discuss the strengths and weaknesses of non-conventional yeasts as natural products cell factories at current stage, and prospects future research and development trends.
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Yeasts/genetics , Yarrowia/metabolism , Gene Editing , Metabolic EngineeringABSTRACT
BACKGROUND@#Type 2 diabetes (T2D) is a common metabolic disorder. Due to insufficient insulin secretion or insulin resistance, increased blood glucose often leads to impaired wound healing in T2D patients. Our previous research showed that adipose-derived stem cells (ASCs) from normal mice and T2D mice improved the cutaneous wound healing of diabetic mice. We also found that the expression of neuropeptide Y (NPY) in T2D ASCs was significantly decreased. @*METHODS@#In order to explore the effects of NPY on ASCs and diabetic wound healing, we investigated the effects of NPY on ASCs proliferation and growth factors expression and secretion, the effects of NPY on skin fibroblasts, and the effects of NPY combined with ASCs on T2D wound healing. @*RESULTS@#The results showed that a certain concentration of NPY could promote the proliferation and the growth factors expression and secretion of ASCs, and promote the proliferation and migration of fibroblasts. At the same time, NPY and ASCs have a synergistic effect, which can promote wound healing and decrease inflammation in T2D wounds. NPY may regulate ASCs through the ERK pathway. These results are conducive to promoting ASCs and NPY in the treatment of diabetic wounds. @*CONCLUSIONS@#NPY can promote the effect of ASCs in the treatment of diabetic wounds.
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Objective:To explore the application of beside wheelchair seating training in patients with acute respiratory distress syndrome (ARDS) and mechanical ventilation, so as to provide the reference for the nursing of acquired myasthenia in EICU.Methods:A total of 66 ARDS patients with mechanical ventilation treated in Beijing Hospital from July 2017 to July 2019 were assigned to the experimental group and the control group according to the admission time, 33 cases in each group. Patients in the control group received routine nursing, while the experimental group implemented beside wheelchair seating training. The differences in muscle strength, self care ability, duration of mechanical ventilation, length of EICU stay as well as complications between the two groups were compared.Results:The incidence of EICU acquired myasthenia in the experimental group was 18.2% (6 cases), which was significantly lower than that in the control group 42.4% (14 cases), the difference was statistically significant ( χ2=4.59, P<0.05). Out of EICU, the Medical Research Council (MRC) scores and Modified Barthel Index (MBI) scores were (48.27 ± 5.11), (59.67 ± 7.33) points in the experimental group, which were significantly higher than those in the control group (44.88 ± 6.75), (54.06 ± 8.53) points, the differences were statistically significant ( t=2.30, 2.86, both P<0.05). The length of EICU stay and duration of mechanical ventilation were (8.24 ± 1.48) d, (7.15 ± 1.48) d, in the experimental group, which were significantly lower than those in the control group (9.85 ± 2.99) d, (8.24 ± 1.77) d, the differences were statistically significant ( t=2.77, 2.72, both P<0.05). The oxygenation index after 30 minutes of weaning was (296.64 ± 15.45) mmHg (1 mmHg=0.133 kPa), which was significantly higher than that in the control group (288.36 ± 16.75) mmHg, the difference was statistically significant ( t value was 2.09, P<0.05). Conclusions:The beside wheelchair seating training can effectively decrease the incidence of EICU acquired myasthenia as well as shorten the duration of mechanical ventilation and length stay in EICU of patients with ARDS. It is safe and effective, and has good clinical application value.
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Objective:To control the pandemic of coronavirus disease 2019 (COVID-19) effectively, strict isolation measures have been taken in China. Suspected patients must be isolated, and the confirmed patients specifically are isolated in negative-pressure isolation rooms. During the isolation, patients face difficulty in adapting to their surrounding environment, worry about the prognosis of the disease, lack confidence in treatment, separate from their families, and have a sense of distance from medical staff. Isolated patients may possess the feelings of negativity, including loneliness, anxiety, depression, insomnia, and despair. Hence, to reduce the risk of adverse psychological outcomes,"family member-like"care strategies were developed and implemented to solve problems associated with the COVID-19 pandemic. This study aims to examine whether using"family member-like"care strategies can improve psychological resilience and reduce depression, anxiety, and stress symptoms among patients with COVID-19 in an isolation ward.Methods: A quasi-experimental design was used to evaluate the"family member-like"care strategies for adult patients with COVID-19 in an isolation ward. COVID-19 patients in the Xiangya ward of the West District of the Union Hospital of Tongji Medical College of Huazhong University of Science and Technology in Wuhan, Hubei province, were included in this study from February 9 to March 20, 2020. Healthcare providers who volunteered as family members were assigned to patients. They practiced one-to-one care and provided continuous and whole care for the patients who were from admission to discharge. Connor-Davidson Resilience Scale-10 (CD-RISC-10) and Depression Anxiety Stress Scale-21 (DASS-21) were used to evaluate the resilience and psychological status of COVID-19 inpatients upon hospital admission, 2 weeks after admission, and at their discharge from the hospital. Results: The questionnaire response rate of the"family member-like"strategies was 100％. Of the 60 patients, 39 (65.0％) were male, and 21 (35％) were female. The hospital stay was (27.5±3.5) days. All the 60 patients were cured and discharged without any death and serious complications. The total scores for CD-RISC were 8.83±6.86 at admission, 29.13±5.42 at 2 weeks after admission, and 33.87±6.14 at discharge, which were significantly improved at the 2 follow-ups (F=404.564, P<0.001). Multivariate analysis and repeated measurements also indicated that patients experienced significant improvements in tenacity (F=360.839, P<0.001), strength (F=368.217, P<0.001), and optimism (F=328.456, P<0.001) at the 2 follow-ups. The total scores of DASS-21 were 49.27±11.30 at admission, 30.77±16.71 at 2 weeks after admission, and 4.17±11.03 at discharge, and the scores were significantly decreased at the 2 follow-ups (F=270.536, P<0.001). Multivariate analysis and repeated measurements also indicated that patients experienced significant decreases in depression (F=211.938, P<0.001), anxiety (F=285.592, P<0.001), and stress (F=287.478, P<0.001) at the 2 follow-ups.Conclusion:"Family member-like"strategies had positive effects on improving psychological resilience and reducing the symptoms of anxiety and depression of COVID-19 patients. It might be an effective care method for COVID-19 patients. It should be incorporated into emergency care management to improve care quality during public health emergencies of infectious diseases.
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Objective:To investigate the diagnosis and treatment of congenital leukemia and the main factors affecting its prognosis.Methods:Clinical data of children with congenital leukemia admitted to Zhengzhou Children′s Hospital from July 2007 to December 2017 were retrospectively collected.Their clinical characteristics, chemotherapy and factors affecting their long-term survival were analyzed.Results:A total of 23 cases of congenital leukemia were collected, who mostly complained of " increased white blood cells, skin nodules and skin hemorrhage" . Among them, 10 cases abandoned the treatment, who all died according to the follow-up results.Among the 13 treated cases, 7 cases were male, and 6 were female.One of the 13 cases was a twin.Eight cases were acute myeloid leukemia, and 5 cases were acute lymphoblastic leukemia.One case did not perform the fusion gene test. MLL gene was positive in 2 cases and negative in 10 cases.No other fusion genes were detected.Karyotype analysis showed that 1 case was 21-trisomy and 12 cases had a normal karyotype.All 13 patients received symptomatic and/or reduced chemotherapy.The median follow-up time was 4 years and 11 months.Six cases recovered and 7 cases died during the follow-up.One case was diagnosed with acute lymphoblastic leukemia on the 6 th day after the birth in another hospital.He was not treated timely and came to Zhengzhou Children′s Hospital with general contract blocks at the age of 32 days.After checking, he was diagnosed with center leukemia and testicular leukemia.He developed a severe infection in the lung and brain after strong chemotherapy, and died even after the remote consultation with Lurie Children′s Hospital of Chicago.The other 6 cases died of severe infection and multiple organ injuries after chemotherapy, and no one died of leukemia relapse. Conclusion:Reduction chemotherapy may be an important treatment to children with congenital leukemia.
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Objective:To investigate the differential expressions of AT-rich interacting domain-containing protein 1A (ARID1A) gene and its encoding protein BAF250a and serum carbohydrate antigen 125 (CA125) in different ovarian serous tumor tissues.Methods:The tumor tissues of 97 patients with serous ovarian tumors who were treated by surgery and confirmed by surgical pathological results in Shanxi Provincial Cancer Hospital from August 2015 to September 2018 were collected. Among them, 11 cases were benign lesions (serous cystadenoma, serous fibroadenoma, serous surface papilloma, control group), 21 cases were borderline lesions (atypical proliferative serous tumor, AP group). There were 35 cases in low-grade serous carcinoma (LC) group and 30 cases in high-grade serous carcinoma (HC) group (including 5, 7, 9 and 9 cases in stage Ⅰ-Ⅳ). Real-time fluorescence quantitative polymerase chain reaction was used to detect the expression of ARID1A mRNA in tumor tissues of each group, Western blot and immunohistochemistry were used to detect the expression and morphology of BAF250a protein in tumor tissues, and enzyme-linked immunosorbent assay was used to detect the concentration of serum CA125 in each group. The differences of ARID1A gene, BAF250a protein and serum CA125 expressions in each group were compared, and the correlation of their expressions in HC group with the clinical stage of patients was analyzed.Results:The relative expressions of ARID1A mRNA and BAF250a protein in the tumor tissues of the control group, AP group, LC group, and HC group decreased in sequence, and the serum CA125 concentration increased in sequence, the differences were statistically significant [1.37±0.02, 0.68±0.03, 0.42±0.04, and 0.29±0.14, F = 3.753, P = 0.008; 1.33±0.11, 0.81±0.11, 0.51±0.11, and 0.39±0.11, F = 10.753, P = 0.001; (23.72±2.26), (36.83±13.11), (412.55±41.71), and (529.96±61.44) U/ml, F = 10.440, P = 0.003]. Immunohistochemistry showed that the high expression rates of BAF250a protein in the control group, AP group, LC group, and HC group were 90.0% (10/11), 85.7% (18/21), 70.0% (21/35), and 33.3% (10/30). In HC group, the serum CA125 concentration increased with the increase of clinical stage [stage Ⅰ-Ⅳ: (461.33±23.18), (483.51±41.21), (507.78±33.41), and (543.19±47.82) U/ml, r = 0.510, P = 0.015], and the relative expressions of ARID1A mRNA and BAF250a protein decreased with the increase of clinical stage (stage Ⅰ-Ⅳ: 0.33±0.10, 0.28±0.11, 0.21±0.08, and 0.17±0.07, r = -0.329, P = 0.030; 3.83±0.13, 3.08±0.16, 2.61±0.18, and 2.07±0.13, r = -0.651, P = 0.002). Conclusion:The decrease of expressions of ARID1A gene and its encoding protein BAF250a, and the increase of CA125 expression in ovarian serous tumor tissues may indicate the malignant change and invasion of tumors.
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Objective:To adjust the wording and to examine the validity and reliability of the Chinese traditional version of the Body Image Scale (BIS) in patients with rectal cancer.Methods:Totally 180 patients pathologically diagnosed with rectal cancer were selected.The obtained data were divided equally into two parts.Half of them was for item analysis and exploratory factor analysis, and the other half was for confirmatory factor analysis and internal consistency reliability.The criterion validity was tested with the Quality of Life Questionnare-Core30 (QLQ-C30).Twenty-five patients were retested for test-retest reliability with 2 week interval.Results:Two factors were retained after exploratory factor analysis, which could explain 69.1％ of the total variation.And the result of confirmatory factor analysis was that the structure of the scale was stable and achieved goodness of fit (χ2/df=2.32, CFI=0.96, NFI=0.93, IFI=0.96, TLI=0.94, RMSEA=0.078).The scores of total scale and two factors were negatively correlated with the scores of five function domains and overall quality of life of QLQ-C30 (r=-0.27——0.54, Ps＜0.05).In total scale, Cronbach' s α coefficient of total scale was 0.92, while test-retest reliability was 0.88.Conclusion:The Chinese version of BIS showed good validity and reliability for assessment of body image in Chinese patients with rectal cancer.
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Objective: To establish an intensity-classified Chinese facial emotion image database and provide materials for emotional researches in China. Methods: Firstly, under the guidance of professional director, 22 professional dramatic actors put up seven kinds of emotion, including anger, disgust, fear, sadness, surprise, happy and calm. The process of facial emotional performance of actors were filmed by a high-speed camera. Then we made screen captures according to the intensity of emotion performed by the actors. A total of 814 black-and-white photographs with same size and gray level were made after we removed the irrelevant parts to the facial features. Each kind of emotion contains six levels of intensity scoring from 1 to 6. Totally, 112 healthy volunteers were recruited to evaluate the emotional intensity, pleasure and arousal of all images via a visual scale ranged from 0 to 100. Results: A Chinese face emotional intensity hierarchical picture library was set up, which contained 2 sublibraries. The first library was consisted of 436 images with hierarchical emotional intensity images collected from different performers. The second one was built with 640 images, in which the hierarchical emotional intensity image was collected from same actor/actress. Both image libraries had corresponding scores for intensity, pleasure, and arousal. Furthermore, both exhibited a high degree of internal consistency in reliability analysis (with a Cronbach' s alpha value larger than 0. 9). Conclusion: The present study has established an intensity-classified Chinese facial emotion image database with good recognition degree and psychological measurement attribution, which could provide materials for emotional researches in China.
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Objective To explore the efficacy and safety of Bevacizumab combined with albumin binding paclitaxel in the treatment of platinum resistant recurrent ovarian cancer.Methods From June 2014 to January 2016,eighty-two recurrent ovarian cancer patients were selected in the study and randomly divided into the treatment group (41 cases) and the control group (41 cases),the control group was treated with albumin binding paclitaxel,and the treatment group was treated with Bevacizumab combined with albumin binding paclitaxel.The clinical efficacy (such as overall response rate,complete response rate,partial response rate,stability of disease,progression of disease),progression free survival (PFS),overall survival (OS) and the adverse reaction rate were compared.Results The total effective rate (ORR) of the experimental group was 85.37％ (35/41),which was significantly higher than that of the control group (65.85％ (27/41),and the difference was statistically significant (P=0.040).The median PFS and OS in the experimental group were 9 (1 ～16) months and 16 (4～26) months,significantly higher than those in the control group (6 (1 ～ 13)months (HR =0.624,95％ CI:0.367 ～ 0.899,P =0.023);12 (2 ～ 25) months (HR =0.603,95％ CI:0.324 ～ 0.791,P =0.009);subgroup analysis showed that the median OS of patienta without metastasis in the experimental and control group were 18 (8 ～ 26) months and 13 (2 ～ 25) months respectively (HR =HR =0.610,95％ CI:0.229 ～ 1.544,P=0.291),and the median PFS was 11 (5～ 16) months and 8 (1 ～ 13) months (HR=0.496,95％CI:0.160～1.046,P=0.089),there were no significant differences;the median P FS in patients with metastasis of the experimental group and the control group were 9 (3～14)months and 6 (1～ 10)months (HR =0.483,95％ CI:0.273 ～ 0.769 months,P＜0.001),the median OS were 14 (4～22) months and 11 (2～20)months (HR =0.556,95％CI:0.197～ 0.569,P=0.008).There was no significant difference in the incidence of adverse reactions between the two groups (12.20％,21.95％,P=0.240).Conclusion Compared with the treatment of albumin binding paclitaxel,in the treatment of platinum resistant recurrent ovarian cancer,the combined treatment of bevacizumab and albumin binding paclitaxel can significantly improve the clinical effect and improve the patients' survival and total survival time.
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Chitosan (CS) is a natural,non-toxic biopolymer mainly made from the deacetylation of chitin. Chitosan has good bio-compatibility with unique antioxidant and biodegradable properties. Due to the poor solubility of chitosan in neutral or alkalinized media,the application of chitosan is restricted. Thus,numerous chitosan derivatives have been developed through chemical modifica-tions to broaden the application scope and improve its value. Chitosan and its derivatives with antioxidant activity have shown superior medical value in recent years. In this paper,several modification methods of chitosan were reviewed. In addition,the research progress in chitosan and its derivatives as antioxidants was introduced.
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Newcastle disease virus is paramyxoviridae, Avian mumps virus genus type I, and infects more than 250 species of birds, causing huge losses on poultry farming worldwide. Numerous experiments have demonstrated that Newcastle disease virus has oncolytic activity on tumor cells and can selectively replicate in cancer cells. Thus, Newcastle disease virus is a potential therapeutic agent for cancer treatment. Some human clinical trials achieved good results. In this review, we summarized research progress of the relationship between the structural protein of Newcastle disease virus and virulence, anti-tumor and autophagy of Newcastle disease.
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Objective To investigate the clinical and pathologic features, and prognosis of patients with double primary carcinoma of ovary or endometrium and ovarian metastasis in endometrial cancer. Methods The clinical pathological data of 23 female patients with double primary carcinoma of ovary or endometrium (group A), and 25 female patients with ovarian metastasis in endometrial cancer (group B) from Shanxi Province Tumor Hospital from January 2008 to January 2015 were analyzed retrospectively. Chi-square test was used to compare the count data. Results The results showed significant differences in the morbidity before and after menopause, the primal symptom, the type and grade of pathology, the invasion of myometrium, seroperitoneum and lymphatic metastasis between the two groups (P< 0.05). There was no significant difference in CA125, HE4 and involvement of cervix (P>0.05). There was no obvious advantage of CA125 and HE4 in identifying the double primary carcinoma of ovary or ovarian metastasis in endometrial cancer (P> 0.05). The significant difference was not found in the involvement of cervix of both groups. Conclusions The significant difference in the clinical and pathologic features between the two groups plays a key role in the preoperation diagnosis and treatment guiding . The prognosis of double primary carcinoma of ovary or endometrium is better than that of ovarian metastasis in endometrial cancer.
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Objective To investigate the clinical and pathologic features, and prognosis of patients with double primary carcinoma of ovary or endometrium and ovarian metastasis in endometrial cancer. Methods The clinical pathological data of 23 female patients with double primary carcinoma of ovary or endometrium (group A), and 25 female patients with ovarian metastasis in endometrial cancer (group B) from Shanxi Province Tumor Hospital from January 2008 to January 2015 were analyzed retrospectively. Chi-square test was used to compare the count data. Results The results showed significant differences in the morbidity before and after menopause, the primal symptom, the type and grade of pathology, the invasion of myometrium, seroperitoneum and lymphatic metastasis between the two groups (P< 0.05). There was no significant difference in CA125, HE4 and involvement of cervix (P>0.05). There was no obvious advantage of CA125 and HE4 in identifying the double primary carcinoma of ovary or ovarian metastasis in endometrial cancer (P> 0.05). The significant difference was not found in the involvement of cervix of both groups. Conclusions The significant difference in the clinical and pathologic features between the two groups plays a key role in the preoperation diagnosis and treatment guiding . The prognosis of double primary carcinoma of ovary or endometrium is better than that of ovarian metastasis in endometrial cancer.
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BACKGROUND:Mesenchymal stem cels have the specific chemotaxis to the inflammation and tumor tissue, but the effect of mesenchymal stem cels on the growth of cervical cancer cels becomes an urgent problem. OBJECTIVE:To investigate the effect of human umbilical cord mesenchymal stem cels on the proliferation of cervical cancer Hela cels. METHODS:Hela cels were co-cultured with human umbilical cord mesenchymal stem cels at different number or its conditioned medium at different concentrations for 3 days. Then, cel counting kit-8 was used to detect the proliferation of Hela cels. RESULTS AND CONCLUSION:When Hela cels were co-cultured with human umbilical cord mesenchymal stem cels at ratios of 1:3, 1:2, 1:1, 2:1, 4:1, 8:1, the relative proliferation inhibition rates were 67.12%, 47.18%, 31.15%, 27.61%, 15.55% and 15.95%, respectively. When the Hela cels were co-cultured with human umbilical cord mesenchymal stem cel conditioned medium at 5, 10, 20, 40, 60, 100 mg/L, the relative proliferation inhibition rates were 0.61%, 40.1%, 63.47%, 80.61%, 93.56%, 90.65%, respectively. These findings indicate that the proliferation of Hela cels can be inhibited by co-culture with human umbilical cord mesenchymal stem cels at a certain concentration-dependent manner.
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Objective To summarize the diagnosis and treatment in neonatal cow’s milk protein allergy (CMPA) with sepsis like initial symptom. Methods CMPA patients with the sepsis like initial symptom (n=10) were selected in our hospital from July 2009 to December 2013. History data, clinical manifestation, laboratory results and the treatment outcome of them were retrospectively analyzed. Results Among these 10 cases, 6 have family history of allergy. Main clinical mani-festations include skin, gastrointestinal symptoms and 1 case of anaphylactic shock. IgE mediated 6 cases with acidophilic cells count of (1.40±0.17)×109/L (5%); The rest 4 cases were not mediated by IgE, with acidophilic cells count of (0.71± 0.08)×109/L (0.02-0.03). Blood cultures were all negative;Blood leukocyte count is (24.5±3.3)×109/L;Rod nucleus granulo-cyte/neutrophils count is (0.161±0.035) ×109/L;The platelet count is (655±39)×109/L;Blood interleukin (IL)-6 is 0.31-0.93μg/L;C reactive protein (CRP) is 85-144 mg/L. All 10 cases were with extensively hydrolyzed formular or amino acid formu-lar feeding. Then their clinical symptoms improved or disappeared significantly and the inflammatory indexes returned to nor-mal. Conclusion It is necessary to make the differential diagnosis between sepsis and neonatal CMPA,which is accompa-nied by increased platelet and acidophil. The most effective treatment of neonatal CMPA is hypoallergenic formular replace-ment therapy.
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Objective To observe efficacy of acute promyelocytic leukemia (APL) by chemotherapy induction and treatment programs after remission.Methods 28 cases of newly diagnosed APL were treated with combined arsenic trioxide and retinoic acid which was called induced program,the patients whose leukocytes ＞10×109/L would be given anthracycline chemotherapy (DNR 40 mg × 3 d).Remission induction anthracycline chemotherapy was given after three courses of intensive therapy,the standard-dose cytarabine was used to the patients with high white blood.After the intensive treatment and with the recorery of the patient' s blood,bone marrow sequential therapy was used [arsenic trioxide (As2O3),retinoic acid (ATRA),6-MP + MTX and chemotherapy],during which recurrence rate and adverse reactions in the patient' s course of treatment were observed.Results Except 1 was died of intracranial hemorrhage at the beginning of treatment,the remaining 27 patients had received hematologic remission with PML/RARα fusion gene negative.Fusion gene of 5 patients remained negative even after maintenance treatment 2 years later.Conclusion As2O3,ATRA combined with chemotherapy in the treatment of APL is effective,the hematologic response time may be shortened,and sequential therapy can significantly reduce the relapse rate and hospitalization time,patient compliance is increased and the quality of life in patients is improved.
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Objectives To observe the expression of death receptor 6 (DR6) in neonatal rats with hypoxia-ischemia brain damage (HIBD). Methods HIBD was induced in day 7 rats. The expression of DR6 at 24 h, 72 h and 7 d after HIBD and the expression of Caspase-3 at 24 h were evaluated by immunostaining. The injury of neural cells was evaluated by cresyl violet at 7 d after HIBD. The cognitive function was evaluated by T-maze test at 60 d after HIBD. Results DR6 positive cells were the most abundant in the ipsilateral cortex at 24 h after HIBD, and decreased gradually at 72 h and 7 d after HIBD. There was signiifcant difference of the expression of DR6 among different time points in HIBD group (P<0.01). Compared with control group, DR6 positive cells were more abundant in the ipsilateral cortex at 24 h and 72 h after HIBD (P<0.01) and caspase-3 positive cells were more abundant in the ipsilateral cortex at 24 h after HIBD (P<0.05). The number of cortical neurons were decreased at 7 d after HIBD as compared with control group (P<0.05). The T-maze test showed there was decline of the cognition in HIBD group com-pared with control group (P<0.05). Conclusions The DR6 signaling pathway plays an important role in cerebral cortex injury which may lead to the subsequent neurofunctional deifcits in neonatal HIBD rats.
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Objective To study seasonal variation of blood pressure (BP) in patients with essential hypertension (EH) and its association with meteorological elements. Methods In total, 1800 patients with essential hypertension were recruited by cluster sampling from three townships and towns in Qingzhou,Shandong province, 1155 men and 645 women, with an average age of 61.3 years (ranging from 29 to 85years). BP was measured for all of them in sitting position at 8:00 in the morning every seven to 14 days during July 2008 to June 2009. Local meteorological data were collected accordingly such as temperature,humidity and atmospheric pressure, and multivariate regression analysis was performed to show their association. Results In general, BP in patients with EH presented a decreasing trend during the first half year of observation, with the lowest in the summer ( May to August). From September to October, their BP began to increase gradually, and reached the peak in the winter ( November to February nest year). There was significant difference in systolic BP (SBP) and diastolic BP (DBP) between various seasons (Pspring-summer = 0.002 and 0.000, Pwinter-spring = 0.001 and 0.000, Psummer-autumn = 0.045 and 0.000,Psummer-winter =0. 000 and 0. 000, Pautumn-winter =0. 000 and 0. 000, respectively), except for those between the spring and autumn. Both SBP and DBP reversely associated with outdoor air temperature and room temperature(beta= -0.08, t = -2.39, P ＜0.05 and beta = -0.24, t = -6.21, P ＜0.01,respectively), (beta = -0.08, t = -2.39, P ＜0.05 and beta = -0.24, t = -6.21, P ＜0.01,respectively). Conclusions BP in patients with EH reveals seasonal variation, with the lowest in the summer and the highest in the winter and evident fluctuation in the spring and autumn, especially in SBP,which associates with room temperature and their blood vessel elasticity.
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Objective To analysis the relationship between gestational age and perinatal outcomes in patients complicated with early onset severe preeclampsia.Methods Retrospective study was conducted on clinical documents of 221 patients with early onset severe preeclampsia( ＜ 34 weeks) who delivered after 28 gestational weeks in Peking University First Hospital from July 1999 to June 2009.Patients were divided into three groups based on gestational weeks at delivery: group Ⅰ (n = 81 ) delivered at 28 -31 weeks+6,group Ⅱ (n = 78) at 32 -33 weeks+6 and group Ⅲ (n = 62) after 34 weeks.The clinical characteristics and perinatal outcomes were compared among those three groups.Results ( 1 ) Outcome of neonates:Among 221 neonates, 13 neonates lost follow-up, including 9 in group Ⅰ , 3 in group Ⅱ, 1 in group Ⅲ.The incidence of neonatal respiratory distress syndrome ( RDS ) of 26% ( 19/72 ) in group Ⅰ were significantly higher than 7% (5/75) in group Ⅱ and 10% (6/61) in group Ⅲ (P ＜ 0.05 ).The neonatal mortality rate of (43% ,31/72) in group Ⅰ were significantly higher than 3% (2/61) in group Ⅲ and 28%(21/75) in group Ⅱ (P ＜0.05 ).The incidence of maternal complications showed no statistical difference among three groups.(2) Neonatal death analysis: all neonatal death were due to parents' give up, including 26%(8/31) in group Ⅰ, 67% (14/21)in group Ⅱ and 1/2 in group Ⅲ, which reached statistical difference(P＜0.05).Conclusions The incidence of neonatal RDS in mother with early onset severe preeclampsia was decreased if delivered after 32 weeks, and the perinatal mortality was remarkably decreased if delivered after 34 weeks.Therefore, the perinatal survival rate in women with early onset severe preeclampsia can be improved by minimizing the impact of social factors.
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<p><b>OBJECTIVE</b>To study the chromatographic fingerprint of the fruits of Schisandra chinensis, and identify the peaks.</p><p><b>METHOD</b>Analysis was performed at 30 degrees C on a Waters Symmetry C18 column (4.6 mm x 250 mm, 5 microm), eluted with acetonitrile-water gradient elution. The flow-rate was 1.0 mL x min(-1), and detection wavelength was 218 nm. The peaks in the chromatogram were identified by LC-MS.</p><p><b>RESULT</b>The fingerprint of the fruits of S. chinensis was established, and fifteen peaks of lignans were identified.</p><p><b>CONCLUSION</b>The method was easy, reliable and could be used as a powerful tool for the further quality control of S. chinensis.</p>