Aquaporin-3 Inhibition Reduces the Growth of NSCLC Cells Induced by Hypoxia.

BACKGROUND/AIMS: Non-small cell lung cancer (NSCLC) is the leading cause of death worldwide. Although aquaporin-3 (AQP3) is widely distributed in mammalian tissues and over-expressed in NSCLC cells, there are limited studies on the effects of AQP3 knockdown on NSCLC cells under hypoxic conditions. METHODS: The CCK-8 assay was used to calculate cell viability. Scratch-wound healing and transwell assays were used to detect cell migration and invasion. Apoptotic cells were measured by the TUNEL assay. mRNA expression levels were calculated via quantitative RT-PCR. Relative protein levels were determined by immunoblot assays. RESULTS: AQP3 knockdown substantially reduced proliferation, migration, and invasion of A549 and NCI-H460 cells under hypoxic conditions. Moreover, AQP3 knockdown clearly induced cell apoptosis. Further analysis identified levels of HIF-1α, VEGF, Raf, phosphor-MEK, and phosphor-ERK, whose activities were significantly attenuated in the AQP3 knockdown group. CONCLUSIONS: These findings indicate that AQP3 knockdown retards the growth of NSCLC cells partially through inhibiting HIF-1α/VEGF and Raf/MEK/ERK signalling pathways.

Five-descriptor model to predict the chromatographic sequence of natural compounds.

Despite the recent introduction of mass detection techniques, ultraviolet detection is still widely applied in the field of the chromatographic analysis of natural medicines. Here, a neural network cascade model consisting of nine small artificial neural network units was innovatively developed to predict the chromatographic sequence of natural compounds by integrating five molecular descriptors as the input. A total of 117 compounds of known structure were collected for model building. The order of appearance of each compound was determined in gradient chromatography. Strong linear correlation was found between the predicted and actual chromatographic position orders (Spearman's rho = 0.883, p < 0.0001). Application of the model to the external validation set of nine natural compounds was shown to dramatically increase the prediction accuracy of the real chromatographic order of multiple compounds. A case study shows that chromatographic sequence prediction based on a neural network cascade facilitated compound identification in the chromatographic fingerprint of Radix Salvia miltiorrhiza. For natural medicines of known compound composition, our method provides a feasible means for identifying the constituents of interest when only ultraviolet detection is available.

Construction and in vitro/in vivo evaluation of 17-allylamino-17-demethoxygeldanamycin (17AAG)-loaded PEGylated nanostructured lipid carriers.

In this study, the PEGylated nanostructured lipid carriers (PEG-NLC) were constructed for the intravenous delivery of 17-allylamino-17-demethoxygeldanamycin (17AAG). 17AAG-PEG-NLC was successfully prepared by the method of emulsion evaporation at a high temperature and solidification at a low temperature using a mixture of glycerol monostearate and PEG2000-stearate as solid lipids, and medium-chain triglyceride as the liquid lipid. The results revealed that the morphology of the NLC was spheroidal. The particle size, zeta potential and entrapment efficiency for 17AAG-PEG-NLC were observed as 189.4 nm, -20.2 mV and 83.42%, respectively. X-ray diffraction analysis revealed that 17AAG existed as amorphous structures in the nanoparticles. In the in vitro release study, the 17AAG from 17AAG-PEG-NLC exhibited a biphasic release pattern with burst release initially and sustained release afterwards. In addition, 17AAG-PEG-NLC showed a significantly higher in vitro antitumor efficacy and longer retention time in vivo than 17AAG solution. These results indicated that 17AAG-PEG-NLC may offer a promising alternative to the current 17AAG formulations for the treatment of solid tumors.

[Improving the accuracy of caregiver-provided in-home total parenteral nutrition care].

BACKGROUND & PROBLEMS: According to current surveys conducted between September and December 2011, the accuracy of primary caregiver-administered Home Total Parenteral Nutrition Care (HTPNC) was 62.0%. Further, nursing staffs provide instruction on HTPNC to only 22.2% of caregivers responsible for administering HTPNC. Main related causes were: (1) difficult to comprehend health education tools; (2) inconsistent nursing guidelines; (3) a lack of relevant standard operating procedures; and (4) poor caregiver adoption of TPN skills. PURPOSE: This project was developed to (1) increase the accuracy of primary caregiver-administered HTPNC to 90% and (2) increase the percentage of nurse-administered HTPNC to 90%. RESOLUTIONS: We developed appropriate nursing guidelines, created a health education CD-ROM with input from a cross-disciplinary team and total parenteral nutrition focus group, designed reusable teaching model aids for repetitive practice, and held regular group health education sessions. RESULTS: The nursing staff HTPNC instruction rate increased to 100%. Caregiver HTPNC implementation accuracy increased to 100% prior to patient discharge. CONCLUSIONS: This approach was successful in achieving its stated goals. Further, using reusable teaching model aids may reduce caregiver anxiety and increase caregiver confidence. The greatest benefit of this project was its extension of teaching model aids to relevant units, allowing for routine monitoring by the department of nursing quality management.

Toxicity evaluation of decabromodiphenyl ethane (DBDPE) to Pleurotus ostreatus: Oxidative stress, morphology and transcriptomics.

Decabromodiphenyl ethane (DBDPE), one widely used new brominated flame retardant, was of great concern due to its biotoxicity. The toxic evaluation of DBDPE (1-50 mg/L) to white-rot fungus (Pleurotus ostreatus), including oxidative stress, morphology and transcriptomics was conducted aiming at improving its biodegradation. Fungal growth and ATPase activity were obviously inhibited by DBDPE at ≥ 10 mg/L with the exposure from 48 h to 96 h. DBDPE could induce oxidative stress to P. ostreatus. The activity of SOD (superoxide dismutase), CAT (catalase) and GSH (glutathione) were all promoted by DBDPE at ≤ 5 mg/L and inhibited at > 5 mg/L with 96-h exposure. MDA (malondialdehyde) content rose obviously with DBDPE exposure (10-50 mg/L). The mycelium was wizened under 20 mg/L DBDPE exposure according to SEM observation. Transcriptomics analysis suggested that DBDPE could change many functional genes expression of P. ostreatus. GO analysis indicated DBDPE could affect biological process and cellular component by inhibiting electron transport, mitochondrial ATP synthesis, oxidoreductase activity as well as transporter activity. KEGG enrichment pathways analysis indicated DBDPE could inhibit oxidative phosphorylation, tricarboxylic acid (TCA) cycle and carbon metabolism by down-regulating the genes related to NADH reductase/dehydrogenase, succinate dehydrogenase, cytochrome-c reductase/oxidase, cytochrome C1 protein and ATP synthase.

Integration of transcriptomic and proteomic reveals the toxicological molecular mechanisms of decabromodiphenyl ethane (DBDPE) on Pleurotus ostreatus.

Decabromodiphenyl ethane (DBDPE), as one of the most widely used new brominated flame retardants (NBFRs), can pose a potential threat to human health and the environment. An integrated transcriptome and proteome was performed for investigating the toxicological molecular mechanisms of Pleurotus ostreatus (P. ostreatus) during the biodegradation of DBDPE at the concentrations of 5 and 20 mg/L. A total of 1193/1018 and 92/126 differentially expressed genes/proteins (DEGs/DEPs) were found, respectively, with DBDPE exposure at 5 and 20 mg/L. These DEGs and DEPs were mainly involved in the cellular process as well as metabolic process. DEPs for oxidation-reduction process and hydrolase activity were up-regulated, and those for membrane, lipid metabolic process and transmembrane transport were down-regulated. The DEGs and DEPs related to some key enzymes were down-regulated, such as NADH dehydrogenase/oxidoreductase, succinate dehydrogenase, cytochrome C1 protein, cytochrome-c oxidase/reductase and ATP synthase, which indicated that DBDPE affected the oxidative phosphorylation as well as tricarboxylic acid (TCA) cycle. Cytochrome P450 enzymes (CYPs) might be involved in DBDPE degradation through hydroxylation and oxidation. Some stress proteins were induced to resist DBDPE toxicity, including major facilitator superfamily (MFS) transporter, superoxide dismutase (SOD), molecular chaperones, heat shock proteins (HSP20, HSP26, HSP42), 60S ribosomal protein and histone H4. The findings help revealing the toxicological molecular mechanisms of DBDPE on P. ostreatus, aiming to improve the removal of DBDPE.

[The application of relaxation techniques and biofeedback to an outpatient with depression disorder: a nurse's experience].

This paper reports on a nurse's experience helping alleviate psychosomatic symptoms in a psychiatric outpatient suffering from depression. It was found that the OPD patient had been suffering from depression as well as long-time tension and pain. Between April 10th and July 24th, 2008, the author employed holistic nursing assessment and collected data through both observation and interview. Three major care problems were identified, including ineffective individual coping, chronic pain, and sleep disturbance. Focusing nursing care on relaxation techniques and biofeedback, the author discussed the problems with the patient and then implemented relaxation training and biofeedback training sessions as well as nursing care plans, which averaged 45~60 minutes per time for 8 times. Sessions included interviews, relaxation techniques (e.g., progressive muscular relaxation, meditative relaxation, meditation, music and abdominal breathing) and visual feedback measured by a biofeedback device with a thermistor sensor. During sessions, the patient was clearly motivated to change and participated actively. Furthermore, the patient not only became gradually aware of both the inner feeling of relaxation and etiology of psychosomatic symptoms, but also learned relaxation strategies for coping with life stressors. After therapy, the patient's self-control over relaxation had improved considerably and care problems were resolved satisfactorily. Also, the patient could increasingly incorporate relaxation into daily life routines.

Exploring the burden of the primary family caregivers of schizophrenia patients in Taiwan.

AIM: The purpose of the present study was to investigate the burden of the primary family caregivers of schizophrenia patients and the factors that affect caregiver burden. METHODS: A total of 126 pairs of patients and their primary family caregivers were recruited from the day care and acute wards of two teaching general hospitals. Demographic information was collected. All patients went through an interview with a senior psychiatrist using the Brief Psychiatric Rating Scale (BPRS). The Caregiver Burden Inventory-Brief Version and the Chinese Health Questionnaire (CHQ) were used to assess the caregiver burden and the caregivers' health condition. One-way analysis of variance and Pearson correlation were used to analyze the relationship between demographic factors and caregiver burden. Multiple regression was used to analyze predictors of burden of caregivers. Statistical significance in this study was defined as P

The Multi-Template Molecularly Imprinted Polymer Based on SBA-15 for Selective Separation and Determination of Panax notoginseng Saponins Simultaneously in Biological Samples.

The feasible, reliable and selective multi-template molecularly imprinted polymers (MT-MIPs) based on SBA-15 (SBA-15@MT-MIPs) for the selective separation and determination of the trace level of ginsenoside Rb1 (Rb1), ginsenoside Rg1 (Rg1) and notoginsenoside R1 (R1) simultaneously from biological samples were developed. The polymers were constructed by SBA-15 as support, Rb1, Rg1, R1 as multi-template, acrylamide (AM) as functional monomer and ethylene glycol dimethacrylate (EGDMA) as cross-linker. The new synthetic SBA-15@MT-MIPs were satisfactorily applied to solid-phase extraction (SPE) coupled with high performance liquid chromatography (HPLC) for the separation and determination of trace Rb1, Rg1 and R1 in plasma samples. Under the optimized conditions, the limits of detection (LODs) and quantitation (LOQs) of the proposed method for Rb1, Rg1 and R1 were in the range of 0.63⁻0.75 ng·mL-1 and 2.1⁻2.5 ng·mL-1, respectively. The recoveries of R1, Rb1 and Rg1 were obtained between 93.4% and 104.3% with relative standard deviations (RSDs) in the range of 3.3⁻4.2%. All results show that the obtained SBA-15@MT-MIPs could be a promising prospect for the practical application in the selective separation and enrichment of trace Panax notoginseng saponins (PNS) in the biological samples.

Correlates of attitudes toward homosexuality and intention to care for homosexual people among psychiatric nurses in southern Taiwan.

This study examined the association between attitudes toward homosexual individuals and intention to provide care and demographic and occupational factors, sexual orientation, knowledge about homosexuality, and experiences of contact with homosexual people among psychiatric nurses in southern Taiwan. In total, 133 psychiatric nurses from a medical center, three regional teaching hospitals, and one psychiatric hospital in southern Taiwan were recruited into this study. Their attitudes toward homosexual people as recorded on the Attitudes Toward Homosexuality Questionnaire, intention to provide care to homosexual individuals, and related factors were examined. The results revealed that psychiatric nurses who had a bachelor's or master's degree, higher level of knowledge about homosexuality, and friends or relatives with a homosexual orientation had a more positive attitude toward homosexuality. These psychiatric nurses, with more positive attitudes, and who worked in the medical center or regional teaching hospitals had a higher intention to care for homosexual people. The factors related to attitudes toward homosexuality and intention to care for homosexual people identified in this study should be taken into consideration when intervening in psychiatric nurses' attitudes toward homosexuality and intention to care for homosexual people.

[A project to raise the participation rate in education groups by psychiatric patient family members].

The objective of this project was to increase the rate of participation in relevant educational programs of immediate relatives of individuals currently undergoing psychiatric treatment. According to statistics, the average participation rate in such educational programs averages only 23.4%; a ratio considered unacceptably low. After analysis, major problems identified included: (1) relatives were not informed in advance of meeting schedules; (2) there was no standard manner by which hospitals communicated with relatives; (3) interaction between patients and their families was, in general, poor; (4) program staff were unable to ensure that relatives knew correct meeting times; and (5) relatives generally lacked interest in health education topics. A special project group was organized and charged to improve the rate of participation of psychiatric patient relatives in health education groups. Three proposals made by this group included: (1) create an annual patient relative attendance planning schedule; (2) implement a patient "life passport" for use as a standardized tool in day hospital care; and (3) arrange time after education activities for patient-parent interaction. After measures were implemented, patient relative participation in education programs rose to 64.8% from 23.4%. Results demonstrate method feasibility and validity. As the proposed method does not require nurses to send out notifications or conduct follow-ups over the phone, it indirectly cuts down costs and manpower and improves patient-family relations, ultimately raising the quality of nursing care.

Coping Strategy and Caregiver Burden Among Caregivers of Patients With Dementia.

BACKGROUND: This study aims to examine whether coping strategies employed by caregivers are related to distinct symptoms of patients with dementia and to investigate the associations between burden and coping among caregivers of patients with dementia. METHODS: A cross-sectional study design was used. A total of 57 caregivers of patients with dementia were enrolled. Coping strategies were assessed using the Ways of Coping Checklist, and burden was assessed using the Chinese version of Caregiver Burden Inventory. Correlations between coping and patients' behavior or memory problems were examined. Severities of behavior and memory problems were adjusted to examine the correlations between caregiver burden and coping strategies. RESULTS: The patients' disruptive behavior problems were associated with avoidance, and depression problems were associated with avoidance and wishful thinking. After adjusting for severity of behavior problems, coping strategies using avoidance were positively correlated with caregiver burden. CONCLUSIONS: Emotion-focused coping strategies are a marker of caregiver burden.

[Nurses' assertiveness training and cognitive therapy experiences with an outpatient suffering from low self-esteem].

The experiences during nine meetings with a psychotherapy outpatient suffering from low self-esteem between 1/1/02 to 4/10/02. Using comprehensive nursing assessment practices for guidance, two conclusions were arrived at regarding the patient's mental health: a) an imbalance in individual response ability, and b) long-term problems with low self-esteem. This assessment was used to help the authors practice appropriate nursing skills associated with assertiveness training and cognitive therapy and to establish a trusting, caring, and accepting relationship with the client. The treatment plan included attempts to increase personal confidence and to promote suitable skills for improving living functions, enhancing relationships, and practicing social behavior.

Quality of life and its correlates in patients with obsessive-compulsive disorder.

The care of patients with obsessive-compulsive disorder (OCD) has raised quality of life (QOL) issues. The purpose of this study was to compare the level of QOL between patients with and without OCD, and to examine the associations between QOL and sociodemographic data, course of illness, psychopathology, perceived social support, and treatment characteristics. The QOL levels measured with the Taiwan version of the Short Form of the World Health Organization Questionnaire on Quality of Life were compared between 57 subjects with OCD and 106 subjects without OCD. The correlates of QOL were examined among subjects with OCD. The analysis revealed that QOL scores for the general, physical, psychological and social relationship domains were lower in the OCD group than in the control group; however, no difference in the environmental domain was found. Multiple factors were associated with poor QOL in subjects with OCD, including comorbid depression, severe obsession symptoms, perceived low social support, severe adverse effects of medication, combined use of mood stabilizers, and low social status. Different domains of QOL are differently affected by OCD. The QOL of subjects with OCD was correlated to multiple factors that were specific to individual subjects and influenced by interactions with treatment and the social environment.

Frontal function, disability and caregiver burden in elderly patients with major depressive disorder.

Caregivers of patients with late-life major depressive disorder experience a significant level of general caregiver burden. Disability in patients is possibly one of the origins of caregiver burden. Frontal lobe dysfunction might be the source of disability. This study investigated if frontal lobe dysfunction (body level) of patients with late-life major depressive disorder was associated with their disability (individual level), and if it led to a high level of caregiver burden (societal level). Thirty-four unselected pairs of caregivers and their family members with late-life major depressive disorder were recruited. Frontal Assessment Battery and Timed Instrumental Activities of Daily Living (TIADL) were used to assess patients' frontal function and disability, and Caregiver Burden Inventory was used to measure caregiver burden. Frontal Assessment Battery correlated with TIADL (r= -0.47; p<0.006). TIADL score was also associated with two subscales of the Caregiver Burden Inventory: social (r = 0.38, p=0.026) and time-dependent (r= 0.37, p= 0.033). This study supported the hypothesis that frontal lobe dysfunction in elderly patients with depression is associated with their disability in instrumental activities of daily living. Disability is related to social and time-dependent aspects of caregiver burden. Further studies to examine proposed cognitive interventions are suggested to reduce patient disability and caregiver burden.

Attitudes toward gay men and lesbians and related factors among nurses in Southern Taiwan.

OBJECTIVES: The aims of this study were to explore different dimensions of the attitudes toward gay men and lesbians among nurses in southern Taiwan and to examine the association between attitudes and intention to provide care to homosexual individuals. The factors related to attitudes towards gay men and lesbians by nurses were also examined. METHODS: In total, 1824 nurses from a medical centre and two regional teaching hospitals in southern Taiwan were recruited into this study. We used the Attitudes Toward Homosexuality Questionnaire (ATHQ) to examine four-dimensional concepts toward homosexuality among nurses. The association of attitudes with the intention of taking care of homosexual patients was examined. Correlations of attitudes toward homosexuality with demographic and occupational data, sexual orientation, knowledge about homosexuality, and experiences of having contact with gay men and lesbians were examined using a stepwise multiple linear regression. RESULTS: Participants had the most negative attitude toward homosexuality in the 'contact' and 'stereotypes' dimensions, followed by the 'morality' dimension and then the 'condemnation/tolerance' dimension. Nurses with more negative attitudes toward homosexuality had lower intentions of taking care of patients with a homosexual orientation. Nurses who had friends or relatives with a homosexual orientation, had a higher educational degree, and had provided care to homosexual patients were more likely to have positive attitudes toward homosexuality. In contrast, nurses who had worked for a longer period, labelled themselves as being absolutely heterosexual, and were religious were more likely to have negative attitudes toward homosexuality. CONCLUSIONS: The factors related to attitudes toward homosexuality identified in this study have to be taken into consideration when intervening for nurses' attitudes toward gay men and lesbians.