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1.
Aust Crit Care ; 2024 Jul 04.
Artigo em Inglês | MEDLINE | ID: mdl-38969541

RESUMO

OBJECTIVES: Advances in critical care technology have lowered mortality rates among critically ill individuals. Nonetheless, survivors and their families may develop new physical, mental, cognitive, and social challenges due to paediatric intensive care unit (PICU) treatments, impacting their quality of life. The aim of this study was to investigate the survival journey and post-traumatic growth process of children and their families following PICU admission within the Chinese cultural context. METHODS: Twenty-six children who have been or are currently admitted to the PICU, alongside their parents and three PICU nurses, were chosen through purposive and theoretical sampling. Data collection involved face-to-face interviews and observations, with data analysis conducted through continuous comparison, open coding, and selective coding techniques. FINDINGS: A model outlining the survival journey and post-traumatic growth process of critically ill children and their families post PICU admission has been established. This model encompasses two central trajectories: an upward trajectory consisting of confusion, charging, action, and sublimation phases and a downward trajectory comprising confusion, doubt and fear, inhibition (including confrontation and avoidance), and drowning phases. CONCLUSIONS: Critically ill children and their families encounter diverse survival experiences and psychological journeys following traumatic events in the PICU. The survival experience has alternative upwards or downwards trajectories that are flexible/adaptable. Hence, offering timely psychological support can alter their developmental trajectories and foster post-traumatic growth.

2.
Transl Cancer Res ; 13(5): 2509-2517, 2024 May 31.
Artigo em Inglês | MEDLINE | ID: mdl-38881925

RESUMO

Background: The efficacy of immunotherapy for brain metastases from small cell lung cancer (SCLC) is relatively low, and the tumor microenvironment of SCLC brain metastases is still unknown. Therefore, we investigated the distribution of tumor-infiltrating lymphocytes (TILs) and the expression of programmed cell death-ligand 1 (PD-L1) in patients with brain metastases from SCLC to explore the tumor microenvironment of SCLC brain metastases. Methods: A retrospective analysis was performed on 12 surgical specimens of brain metastases from patients with SCLC treated in the Department of Neurosurgery of The First Affiliated Hospital of Anhui Medical University from June 2017 to June 2022. The inclusion criteria for this study were the following: (I) a pathologically confirmed diagnosis of SCLC brain metastases; (II) surgical resection of brain metastases; (III) age >18 years; (IV) and complete clinical data. Patient-related data were retrieved from the inpatient medical record system, telephone follow-up of patients date of death, and overall survival (OS). The immunofluorescence-based tissue microenvironment analysis panel (MAP) was utilized for the detection of TILs, including CD3, CD8, programmed cell death 1 (PD-1), and PD-L1, in formalin-fixed and paraffin-embedded archival specimens of brain metastases. The expression levels of PD-L1 in tumor cells were detected by immunohistochemistry. The correlation between the OS and the above-mentioned markers was analyzed in the 12 patients. Results: Twelve patients were included in the study. The patients' ages ranged from 51-78 years with a median of 68 years, with 1 female and 11 males. Among 12 patients with SCLC brain metastases: positive rates of CD3+ TILs in the tumor parenchyma vs. tumor stroma were 0.60%±0.94% vs. 1.76%±2.72% (P=0.01), respectively; positive rates of CD8+ TILs in the tumor parenchyma vs. tumor stroma were 0.80%±0.78% vs. 2.46%±3.72% (P=0.02), respectively. There was no co-expression of CD8+ and PD-1+ TILs in the tumor parenchyma of 11 cases, and the infiltration density of coexpressed CD3+ and PD-1+ TILs was more than 10/mm2 in only 1 case. There was no coexpression of CD3+ and PD-1+ TIL in the stroma of 10 cases, and the infiltration density of CD8+ and PD-1+ TILs was more than 10/mm2 in 2 cases. Immunohistochemistry was used to detect the expression of PD-L1 in 12 cases of SCLC metastatic lesions, and 3 cases (25%) were positive. Survival analysis showed that patients with positive intraepithelial CD3+ TILs had significantly longer OS [hazard ratio 3.383, 95% confidence interval (CI): 0.959-11.940; P=0.04]. Conclusions: Our study further demonstrated the immune microenvironment of SCLC brain metastases. The distribution of TILs in SCLC brain metastases is low and mainly distributed in the stroma, with the expression of PD-L1 in these tumor tissues being low. Further exploration of the immune microenvironment of SCLC brain metastases is of great significance for potential treatment.

3.
Intensive Crit Care Nurs ; 83: 103697, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38583413

RESUMO

OBJECTIVE: To examine the effects of web neonatal intensive care unit diaries on the mental health, quality of life, sleep quality, care ability, and hormone levels of parents of preterm infants in the neonatal intensive care unit. DESIGN: Prospective randomized controlled parallel-group clinical trial. SETTING: Maternal and Child Health Hospital, Fujian, China. METHODS: The control group received routine neonatal intensive care unit care, while the intervention group received a web neonatal intensive care unit diary based on routine care. Outcomes, including anxiety, depression, and post-traumatic stress disorder symptoms, quality of life, sleep quality, care ability, and cortisol and melatonin levels, were evaluated at T1 (Time 1, before the intervention), T2 (Time 2, immediately after the intervention), and T3 (Time 3, 1 month after the intervention). RESULTS: Seventy pairs of parents of preterm infants in the neonatal intensive care unit were randomly allocated to two groups: intervention (n = 35) and control (n = 35). The anxiety scores in the intervention group were significantly lower at T2 and T3 than those in the control group (P < 0.001). The care ability scores in the intervention group were significantly higher at T2 and T3 (P < 0.001). The prevalence of post-traumatic stress disorder at T3 was significantly different between the groups (P = 0.040). No significant differences were observed in the quality of life or sleep quality between the groups at T2 and T3 (P > 0.05). No significant differences were observed in cortisol and melatonin levels between the groups (P > 0.05). CONCLUSIONS: Web neonatal intensive care unit diaries effectively relieved anxiety symptoms, reduced the prevalence of post-traumatic stress disorder, and enhanced the care abilities of parents of preterm infants in the neonatal intensive care unit. IMPLICATIONS FOR CLINICAL PRACTICE: Web neonatal intensive care unit diary can be considered in clinical practice as a convenient psychological intervention method, especially among parents of preterm infants in the neonatal intensive care unit.


Assuntos
Recém-Nascido Prematuro , Unidades de Terapia Intensiva Neonatal , Pais , Qualidade de Vida , Qualidade do Sono , Humanos , Qualidade de Vida/psicologia , Feminino , Unidades de Terapia Intensiva Neonatal/organização & administração , Unidades de Terapia Intensiva Neonatal/estatística & dados numéricos , Recém-Nascido , Masculino , Pais/psicologia , Estudos Prospectivos , Adulto , China , Internet , Hidrocortisona/análise , Hidrocortisona/sangue , Diários como Assunto , Ansiedade/psicologia
4.
Front Oncol ; 12: 823459, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35463336

RESUMO

Penile squamous cell carcinoma is a rare malignant tumor of the male reproductive system. We report two cases of advanced penile squamous cell carcinoma with persistent partial response/complete response after sintilimab combined with chemotherapy and analyze the relevant tumor biomarkers.

5.
Int J Nurs Stud ; 119: 103934, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33975075

RESUMO

BACKGROUND: A few positive effects of mothers' voice on physiological outcomes have been studied and limited studies have focused on the level of cortisol. In addition, white noise has recently been found to be beneficial for human sleep, but studies in premature infants were limited and no study has compared the effects of mothers' voice and white noise on premature infants. OBJECTIVE: To examine the effects of mothers' voice and white noise on sleep-wake patterns, salivary cortisol levels, weight gain, heart rate, and oxygen saturation of premature infants in a neonatal intensive care unit (NICU). METHODS: This was a three-group randomized controlled trial. A total of 103 medically stable premature infants in incubators were recruited from the NICU of a women's and children's hospital in China between March and December 2017 and were randomized into three groups: the mothers' voice group (n = 34), the white noise group (n = 34), and the routine care group (n = 35). Mothers' voice, white noise, and no voice were provided to the three groups for 20 min at a time, three times a day for four consecutive days. The sound levels of the mothers' voice and white noise were controlled between 50 and 55 dB. Sleep-wake patterns, salivary cortisol level, and weight were measured at pre-test and post-test whereas heart rate and oxygen saturation were measured every five-minute at 11am, 2pm, 5pm for four-consecutive days. RESULTS: A group difference was found only in weight gain (p = 0.003), with weight gain in the white noise group being significantly higher than the mothers' voice group (Z=-3.447, p = 0.001). Significant declines in total sleep time and sleep efficiency and increases in wake time after sleep onset and average awakening time were only found in the routine-care group between the pre-test and post-test (p<0.05). No significant differences were found in the salivary cortisol levels, heart rates, and oxygen saturation levels among the three groups (p>0.05). A significant increase in oxygen saturation during the 20-min intervention was found in white noise group. Non-significant decreases in the heart rate during the 20-min intervention and salivary cortisol levels at post test were noted in all the three groups. CONCLUSION: White noise is more useful for encouraging weight gain in preterm infants compared with mothers' voices. White noise might be introduced for use in the care of premature infants in NICUs, and more high-quality randomized controlled trials are needed to confirm these findings. Trial Registration No: ChiCTR-INR-17012755.


Assuntos
Unidades de Terapia Intensiva Neonatal , Mães , Criança , China , Feminino , Humanos , Lactente , Recém-Nascido , Recém-Nascido Prematuro , Sono
6.
JMIR Ment Health ; 8(2): e23917, 2021 Feb 10.
Artigo em Inglês | MEDLINE | ID: mdl-33481751

RESUMO

BACKGROUND: During the COVID-19 pandemic, special education schools for children in most areas of China were closed between the end of January and the beginning of June in 2020. The sudden interruption in schooling and the pandemic itself caused parents to be anxious and even to panic. Mobile-based parenting skills education has been demonstrated to be an effective method for improving the psychological well-being of mothers with children with autism. However, whether it can improve the psychological states of mothers in the context of the COVID-19 pandemic is a subject that should be urgently investigated. OBJECTIVE: The aim of this study is to evaluate the efficacy of WeChat-based parenting training on anxiety, depression, parenting stress, and hope in mothers with children with autism, as well as the feasibility of the program during the COVID-19 pandemic. METHODS: This was a quasi-experimental trial. A total of 125 mothers with preschool children with autism were recruited in January 2020. The participants were assigned to the control group (n=60), in which they received routine care, or the intervention group (n=65), in which they received the 12-week WeChat-based parenting training plus routine care, according to their preferences. Anxiety, depression, parenting stress, hope, satisfaction, and adherence to the intervention were measured at three timepoints: baseline (T0), postintervention (T1), and a 20-week follow-up (T2). RESULTS: In total, 109 mothers completed the T1 assessment and 104 mothers completed the T2 assessment. The results of the linear mixed model analysis showed statistically significant group × time interaction effects for the intervention on anxiety (F=14.219, P<.001), depression (F=26.563, P<.001), parenting stress (F=68.572, P<.001), and hope (F=197.608, P<.001). Of all mothers in the intervention group, 90.4% (48.8/54) reported that they were extremely satisfied with the WeChat-based parenting training. In total, 40.0% (26/65) logged their progress in home training each week and 61.5% (40/65) logged their progress more than 80% of the time for all 20 weeks. CONCLUSIONS: The WeChat-based parenting training is acceptable and appears to be an effective approach for reducing anxiety, depression, and parenting stress, as well as increasing hope in mothers with children with autism during the global COVID-19 pandemic. Future studies with rigorous designs and longer follow-up periods are needed to further detect the effectiveness of the WeChat-based parenting training. TRIAL REGISTRATION: Chinese Clinical Trial Registry ChiCTR2000031772; http://www.chictr.org.cn/showproj.aspx?proj=52165.

7.
Chem Commun (Camb) ; 56(35): 4808-4811, 2020 Apr 30.
Artigo em Inglês | MEDLINE | ID: mdl-32232278

RESUMO

Bi-metallic patterns with array of Pt discs decorated by Au rings were fabricated onto the substrate by a templated-self-assembly procedure in which multi-step self-assembly processes were involved. The original pattern was established by using the breath figure method. The bi-metallic sample with Au rings exhibited rather high sensitivity as well as great reproducibility within the array in surface-enhanced Raman scattering test.

8.
Crit Care ; 24(1): 81, 2020 03 06.
Artigo em Inglês | MEDLINE | ID: mdl-32143655

RESUMO

BACKGROUND: Although studies on the effectiveness of the use of ICU diaries on psychiatric disorders and quality of life have been published, the results still seem to be controversial. The study aimed to determine the effects of using an ICU diary on psychiatric disorders, sleep quality, and quality of life (QoL) in adult ICU survivors in China. METHODS: One hundred and twenty-six patients who underwent a scheduled cardiac surgery and were expected to stay ≥ 24 h in ICU were randomized to two groups (63 in each group). The patients in the intervention group received the use of ICU diaries during the period of post-ICU follow-up, while the patients in the control group received usual care without ICU diaries. The primary outcome was significant PTSD symptoms (Chinese version of Impact of Event Scale-Revised, IES-R; total score ≥ 35 was defined as significant PTSD symptoms) and its severity in patients 3 months post-ICU. The secondary outcomes included memories of the ICU at 1 month, QoL (Medical Outcomes Study 36-item Short-Form, SF-36), sleep quality (Pittsburgh Sleep Quality Index Questionnaire, PSQI), anxiety, and depression symptoms (Hospital Anxiety and Depression Scale, HADS) at 3 months. RESULTS: Eighty-five and 83 patients completed the follow-up interviews at 1 month and 3 months post-ICU, respectively. Significant PTSD symptoms were reported by 6 of 41 (14.63%) in the intervention group vs 9 of 42 (21.43%) in the control group (risk difference, - 9% [95% CI, - 2% to 21%], P = 0.10). There was no significant differences between groups in IES-R score, symptoms of intrusion, symptoms of avoidance, numbers of memories of feeling and delusional memories, SF-36 score and anxiety score (P > 0.05), while significant differences were found in symptom of hyperarousal score, numbers of factual memories and PSQI score (P < 0.05). No adverse effect was reported. CONCLUSIONS: Using an ICU diary is not useful for preventing PTSD symptoms and anxiety symptoms and preserving the quality of life of the patients at 3 months post-ICU, while it significantly improves the survivor's factual memory of ICU and sleep quality, and prevents the hyperarousal symptom. TRIAL REGISTRATION: Chinese Clinical Trial Registry, ChiCTR-IOR-16009109, registered on 28 August 2016.


Assuntos
Diários como Assunto , Transtornos Mentais/psicologia , Qualidade de Vida/psicologia , Sono , Sobreviventes/psicologia , Adulto , Ansiedade/complicações , Ansiedade/psicologia , Depressão/complicações , Depressão/psicologia , Feminino , Humanos , Unidades de Terapia Intensiva/organização & administração , Unidades de Terapia Intensiva/estatística & dados numéricos , Masculino , Transtornos Mentais/complicações , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde , Inquéritos e Questionários , Sobreviventes/estatística & dados numéricos
9.
Zhonghua Wei Zhong Bing Ji Jiu Yi Xue ; 31(2): 165-171, 2019 Feb.
Artigo em Chinês | MEDLINE | ID: mdl-30827303

RESUMO

OBJECTIVE: To analyze the risk factors of delirium in patients in cardiac surgery intensive care unit (CSICU). METHODS: A prospective observational study was performed. Patients admitted to CSICU of Fujian Medical University Union Hospital from March to August in 2017 were enrolled. The combination of the Richmond agitation sedation scale (RASS) and the ICU-confusion assessment method (CAM-ICU) were used to evaluate delirium. The patient was assessed on the second day after CSICU admission, twice a day, the evaluation was stopped, and the follow-up observation was terminated after the patient was discharged from CSICU. The patients were divided into two groups according to whether delirium occurred in CSICU. The general and clinical treatment data (including condition, operation, anesthesia and CSICU treatment) of the two groups were compared. The related factors of delirium were identified by univariate analysis and multifactor Logistic regression analysis. RESULTS: A total of 318 cases were included in this study. Among them, 93 cases had delirium and the incidence of delirium was 29.2%. It was shown by univariate analysis that age, history of hypertension, type of surgery, surgical procedure, American Society of Anesthesiologists (ASA) anesthesia classification, usage of propofol, plasma transfusion, red blood cells, platelet transfusion, blood loss, operative time, cardiopulmonary bypass (CPB) time, myocardial block time, acute physiology and chronic health evaluation II (APACHE II), duration of mechanical ventilation, the length of intensive care unit (ICU) stay, postoperative usage of diazepam, midazolam, fentanyl, morphine, chlorpromazine, etc. which were related to delirium, and occupation (on-the-job or self-employed), medical insurance (city or provincial medical insurance), education (primary to junior high school, high school or above) could reduce the risk of delirium. Colinearity diagnosis was performed on variables with statistically significant differences, and variables with variance expansion factor (VIF) < 3 were included in multivariate Logistic regression analysis. The results showed that age, education level, type of surgery, ASA classification, CPB time, APACHE II, ICU mechanical ventilation time, and post operation usage of midazolam were independently related to delirium [age: odds ratio (OR) = 1.625, 95% confidence interval (95%CI) = 1.303-2.026; education level: OR = 0.293, 95%CI = 0.171-0.504; type of surgery: OR = 2.194, 95%CI = 1.052-4.576; ASA classification: OR = 1.916, 95%CI = 1.032-3.559; CPB time: OR = 2.125, 95%CI = 1.105-4.088; APACHE II: OR = 2.091, 95%CI = 1.005-4.349; ICU mechanical ventilation time: OR = 1.943, 95%CI = 1.269-2.975; midazolam: OR = 2.653, 95%CI = 1.328-5.299; all P < 0.05], among which, high education level has a good protective effect on delirium. CONCLUSIONS: Age, type of surgery, ASA classification, CPB time, APACHE II, ICU mechanical ventilation time, post operation usage of midazolam were independent risk factors for delirium, and high education level had a good protective effect. Among them, the educational level, CPB time, duration of mechanical ventilation, and midazolam are intervention factors. In clinical treatment, not only the risk factors should be identified, but also intervention should be taken to prevent the occurrence of delirium.


Assuntos
Procedimentos Cirúrgicos Cardíacos/efeitos adversos , Delírio/epidemiologia , Unidades de Terapia Intensiva , Humanos , Estudos Prospectivos , Fatores de Risco
10.
Worldviews Evid Based Nurs ; 15(5): 386-393, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30098111

RESUMO

BACKGROUND: Nonpharmacological interventions are often used to promote sleep among preterm infants in the neonatal intensive care unit (NICU). However, there is a lack of synthesis in the evidence of their effectiveness. AIM: To synthesize the evidence on the effectiveness of nonpharmacological interventions on NICU preterm infants' sleep during hospital stay. METHODS: Seven databases were searched, including MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, Wan-fang database, China National Knowledge Infrastructure, China Biological Medicine Database, and VIP Journal Integration Platform from their inceptions to August 2017. Randomized controlled trials examining the effects of nonpharmacological interventions on preterm infants' sleep were included. RESULTS: This review included 36 studies. Nonpharmacological interventions included the Newborn Individualized Developmental Care and Assessment Program (NIDCAP), music, non-nutritive sucking, touch, cycled light, cobedding, rocking, oral sucrose, remolding mattresses, and family nurturing. The meta-analysis results showed that 1. the NIDCAP had no significant effect on total sleep time efficiency (TST%; p = .34); 2. mattress interventions had significant effects on TST% (p < .001); and active sleep efficiency (AS%; p = .006) but no significant effect on quiet sleep efficiency (QS%; p = .75); 3. cycled light increased TST (p = .02); and 4. cobedding had no significant effects on QS% and AS% (p = .63 and p = .88, respectively). LINKING EVIDENCE TO ACTION: Remolding mattresses and cycled light had significant effects on sleep promotion in preterm infants, but the quality of the evidence was very low. Further high-quality studies are needed to strengthen this evidence.


Assuntos
Recém-Nascido Prematuro , Transtornos do Sono do Ritmo Circadiano/terapia , Humanos , Recém-Nascido , Unidades de Terapia Intensiva Neonatal/organização & administração , Unidades de Terapia Intensiva Neonatal/estatística & dados numéricos , Musicoterapia/normas
11.
Artigo em Inglês | MEDLINE | ID: mdl-26681602

RESUMO

The complete mitochondrial genome of the green-backed tit Parus monticolus was assembled from Illumina sequencing reads. The genome is 16 771 bp long, and harbors 22 transfer RNAs (tRNAs), 13 protein-coding genes (PCGs), two ribosomal RNAs (rRNAs), and one control region. All PCGs are initiated with the ATG codon except for COX1 with GTG as its start codon. Five distinct types of stop codons are inferred, i.e. AGA (ND1 and ND5), AGG (COX1), TAA (ATP6, ATP8, COX2, ND3 and ND4L), TAG (ND6), and the incomplete codon T/TA (COX3, CYTB, ND2 and ND4). The 22 tRNAs range in size from 66 to 75 bp. The 12S and 16S rRNAs are 982 and 1601 bp long, respectively, and are separated by tRNA-Val gene. The putative control region is located between tRNA-Glu and tRNA-Phe with a length of 1187 bp. Phylogenetic analysis indicated that this species is closely related to its congener P. major.


Assuntos
Genes Mitocondriais , Genoma Mitocondrial , Passeriformes/genética , Filogenia , Animais , Sequência de Bases , Códon , DNA Mitocondrial , Tamanho do Genoma , Genômica , Sequenciamento de Nucleotídeos em Larga Escala , Análise de Sequência de DNA
12.
Mitochondrial DNA A DNA Mapp Seq Anal ; 28(1): 143-144, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-26710310

RESUMO

The complete mitochondrial genome of the fulvous parrotbill (Paradoxornis fulvifrons) has been determined from Illumina sequencing data. The circular genome is 17 059 bp long, comprising 37 genes (13 protein-coding genes/PCGs, 22 tRNA genes and two rRNA genes) and a putative control region. Except for COX1 with GTG as its start codon, all PCGs are initiated with the ATR (ATA/ATG) codons. One PCG (COX1) is terminated with AGG, three PCGs (COX3, ND2 and ND4) with the incomplete stop codon T--/TA-, while all the others with TAA. The 22 tRNAs range in size from 64 bp (tRNA-Ser) to 75 bp (tRNA-Leu). The two rRNAs are 982 bp (12S rRNA) and 1600 bp (16S rRNA) long, respectively. The putative control region is located between tRNA-Thr and tRNA-Pro genes with a length of 1235 bp. The base composition is biased (29.06% A, 31.10% C, 14.97% G and 24.87% T) with an overall A + T content of 53.93% ("light strand"). Phylogenetic analysis indicated that P. fulvifrons is closely related to the congeneric vinous-throated parrotbill (P. webbianus).


Assuntos
Genes Mitocondriais , Genoma Mitocondrial , Passeriformes/genética , Filogenia , Animais , Composição de Bases , Sequência de Bases , Códon , DNA Mitocondrial , Tamanho do Genoma , Genômica , Sequenciamento de Nucleotídeos em Larga Escala , Análise de Sequência de DNA
13.
J Asian Nat Prod Res ; 16(7): 795-9, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24915831

RESUMO

A new limonoid, 3-de(2-methylbutanoyl)-3-propanoylcipadesin (1), along with 10 known limonoids and 1 known triterpenoid, was isolated from the fruits of Cipadessa cinerascens. Their structures were elucidated on the basis of spectroscopic analysis. All compounds were evaluated for their antimicrobial activities, and compounds 6 and 12 showed weak antimicrobial activities against MRSA 82(#) and MRSA 92(#).


Assuntos
Medicamentos de Ervas Chinesas/isolamento & purificação , Limoninas/isolamento & purificação , Meliaceae/química , Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/farmacologia , Frutas/química , Limoninas/química , Limoninas/farmacologia , Testes de Sensibilidade Microbiana , Estrutura Molecular , Ressonância Magnética Nuclear Biomolecular , Folhas de Planta/química , Triterpenos/química , Triterpenos/isolamento & purificação
14.
J Asian Nat Prod Res ; 15(6): 638-43, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23662596

RESUMO

Two new compounds, khayseneganin I (1) and 2α,3α,16ß-trihydroxy-20-acetoxy-20(R)-pregnane (2), along with six known compounds, 2α,3α,20-trihydroxy-16ß-acetoxy-20(R)-pregnane (3), 2α,3ß-dihydroxypregnan-16-one-2ß,19-hemiketal (4), (+)-catechin (5), ivorenolide A (6), luteolin-7-O-α-l-rhamnoside (7), and ( - )-5'-methoxy-isolariciresinol-2a-O-ß-d-xylopyranoside (8), were isolated from the leaves and twigs of Khaya senegalensis. The structures of new compounds were elucidated by 2D NMR spectroscopy and MS. Selected compounds (2-8) were evaluated for their antimicrobial activities and compounds 5 and 7 showed weak antimicrobial activities against MRSA 92(#) and MRSA 98(#).


Assuntos
Antibacterianos/isolamento & purificação , Medicamentos de Ervas Chinesas/isolamento & purificação , Limoninas/isolamento & purificação , Meliaceae/química , Pregnanos/isolamento & purificação , Antibacterianos/química , Antibacterianos/farmacologia , Catequina/química , Catequina/isolamento & purificação , Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/farmacologia , Glicosídeos/química , Limoninas/química , Limoninas/farmacologia , Staphylococcus aureus Resistente à Meticilina/efeitos dos fármacos , Testes de Sensibilidade Microbiana , Estrutura Molecular , Ressonância Magnética Nuclear Biomolecular , Folhas de Planta/química , Caules de Planta/química , Pregnanos/química , Pregnanos/farmacologia
15.
Nan Fang Yi Ke Da Xue Xue Bao ; 30(11): 2512-5, 2010 Nov.
Artigo em Chinês | MEDLINE | ID: mdl-21097420

RESUMO

OBJECTIVE: To compare the cardiorespiratory factors and surgical conditions during total intravenous anesthesia for prolonged laparoscopic pelvic surgery with or without supplemental muscle relaxants. METHODS: Forty female ASA I or II patients undergoing laparoscopic pelvic surgeries were randomized into two groups A and B, both with standardized anesthesia via a intravenous bolus injection of rocuronium (0.6 mg/kg). The patients in group B received continuous rocuronium infusion upon observation of one TOF twitch response with the T1 value maintained within 0-10% and rocuronium withdrawal at 20 to 30 min before the completion of the surgery. The patients in group A received no supplemental muscle relaxants. The cardiorespiratory parameters were measured during the operation. The respiratory system compliance (Ceff rs) was calculated as the quotient of the tidal volume (VT) and peak inspiratory pressure (PIP), and the operative conditions were graded by the operating gynecologist. RESULTS: The cardiorespiratory parameters significant increased and Ceff rs decreased after pneumoperitoneum, but no significant differences were found between the two groups. The surgical conditions were also comparable between the two groups, but the duration of intubation and the operating time were significantly shorter in the group A. CONCLUSION: Pneumoperitoneum severely affects the cardiorespiratory parameters during laparoscopy, which can not be lessened by neuromuscular block agents. A single intubating dose of rocuronium can suffice the requirement of prolonged gynecologic laparoscopic surgery.


Assuntos
Androstanóis/administração & dosagem , Laparoscopia/métodos , Fármacos Neuromusculares não Despolarizantes/administração & dosagem , Anestesia Intravenosa , Feminino , Procedimentos Cirúrgicos em Ginecologia , Humanos , Rocurônio
16.
Nan Fang Yi Ke Da Xue Xue Bao ; 30(3): 490-3, 2010 Mar.
Artigo em Chinês | MEDLINE | ID: mdl-20335117

RESUMO

OBJECTIVE: To prepare morphine-loaded chitosan microspheres by emulsion ionic cross-linking and investigate the effect of initial morphine quantity and different cross-linking degrees on drug loading, encapsulation efficiency and in vitro drug release. METHODS: Chitosan (with a relative molecular mass of 50,000 and deacetylation degree no less than 90%) at 100 mg and morphine at 20, 30, 40, or 50 mg were dissolved by 2% acetate and dripped slowly into 15 ml soy-bean oil containing 0.75 ml Span80. After full emulsification at 35 degrees C; for 1.5 h, the mixture was dripped slowly into sodium tripolyphosphate (10 mg/ml) at the mass ratio of 5:1, 7:1, or 9:1 to allow cross-linking for 2 h. The drug loading, encapsulation efficiency and in vitro drug release of the preparations were measured. RESULTS: The drug loading in the microsphere increased while the encapsulation efficiency reduced with the increment of the initial morphine quantity. High cross-linking degree resulted in prolonged release time of the drug loaded in the preparations. CONCLUSION: The microspheres loaded with morphine allows sustained release of morphine.


Assuntos
Quitosana/administração & dosagem , Preparações de Ação Retardada/síntese química , Microesferas , Morfina/administração & dosagem , Portadores de Fármacos/administração & dosagem
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