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1.
Br J Haematol ; 200(2): 240-248, 2023 01.
Article in English | MEDLINE | ID: mdl-36220152

ABSTRACT

Marstacimab, an investigational human monoclonal antibody targeting tissue factor pathway inhibitor, demonstrated safety and efficacy in preventing bleeding episodes in patients with haemophilia. This multicentre, open-label study investigated safety, tolerability, and efficacy of long-term weekly prophylactic marstacimab treatment in participants with severe haemophilia A and B, with or without inhibitors. Adult participants were enrolled from a previous phase Ib/II study or de novo and assigned to one of two subcutaneous (SC) marstacimab doses: once-weekly 300 mg or a 300-mg loading dose followed by once-weekly 150-mg doses, for up to 365 days. Study end-points included safety assessments and annualised bleeding rates (ABRs). Of 20 enrolled participants, 18 completed the study. Overall, 70% of participants had treatment-emergent adverse events, including injection site reactions, injection site haematoma, and haemarthrosis. No treatment-related serious adverse events or thrombotic events occurred. Across all dose cohorts, mean and median on-study ABRs ranged from 0 to 3.6 and 0 to 2.5 bleeding episodes/participant/year respectively, demonstrating comparable efficacy to that observed in the short-term parent study. No treatment-induced anti-drug antibodies were detected. Once-weekly SC marstacimab prophylaxis was well tolerated, with an acceptable safety profile, and maintained long-term efficacy up to 365 days. (Clinicaltrials.gov identifier, NCT03363321).


Subject(s)
Hemophilia A , Adult , Humans , Hemophilia A/drug therapy , Hemophilia A/chemically induced , Antibodies, Monoclonal, Humanized/adverse effects , Hemorrhage/chemically induced , Hemorrhage/prevention & control , Hemorrhage/drug therapy , Hemarthrosis
2.
BMC Med Educ ; 22(1): 346, 2022 May 06.
Article in English | MEDLINE | ID: mdl-35524256

ABSTRACT

BACKGROUND: Academic burnout has a negative effect on learning outcomes of nursing students. Factors affecting academic burnout may differ depending on whether or not they have experience in clinical practice and identifying these differences would be necessary to seek for strategies to lower academic burnout of nursing students. This study aimed to determine the effects of stress, depression, and anxiety on academic burnout according to the clinical practice experience of nursing students. METHODS: Data were collected from 171 female nursing students in South Korea. Self-report questionnaires from 83 participants without clinical practice experience and 88 with clinical practice experience were analyzed using descriptive statistics, χ2-tests, analysis of variance, t-test, Spearman correlation coefficient, and stepwise multiple regression. RESULTS: Academic burnout was positively correlated to stress (r = .52, p < .001), anxiety (r = .50, p < .001) and depression (r = .44, p < .001). In those students with no clinical practice experience, anxiety and depression explained for academic burnout by 44%, and those students with clinical practice experience, stress and major satisfaction explained for 33% of academic burnout. CONCLUSIONS: Universities and clinical institutions should establish a cooperative system to reduce stress, depression and anxiety and increase major satisfaction.


Subject(s)
Burnout, Professional , Students, Nursing , Anxiety , Burnout, Professional/epidemiology , Burnout, Psychological , Cross-Sectional Studies , Female , Humans , Male , Surveys and Questionnaires
3.
Article in English | MEDLINE | ID: mdl-35457581

ABSTRACT

The prolonged coronavirus disease 2019 (COVID-19) pandemic has caused an overload of work for nurses and resulted in high levels of stress. Improving the quality of work life may be a useful mediator for these demands. The purpose of this study was to identify factors affecting work stress, turnover intention, mindfulness, and quality of work life in nurses working in tertiary general hospitals. The participants of this study were 207 female nurses working in tertiary general hospitals with more than six months of clinical experience. Data were collected using an online Google survey. Data were analyzed using the SPSS/WIN 26.0 program. The mean score for the quality of work life was 3.81 ± 0.53 out of six points. The quality of work life was negatively correlated with job stress (r = −0.36, p < 0.001) and turnover intention (r = −0.45, p < 0.001) and positively correlated with mindfulness (r = 0.35, p < 0.001). Factors affecting quality of work life were work satisfaction (ß = 0.27, p = 0.004), job stress (ß = −0.23, p < 0.001), and turnover intention (ß = −0.18, p = 0.016). As a result, positive factors such as work satisfaction had stronger effects than negative factors. Thus, it would be necessary to seek strategies such as improving compensation for nurses, enhancing teamwork, or establishing a support system for managers, superiors, and colleagues.


Subject(s)
COVID-19 , Nurses , Nursing Staff, Hospital , Occupational Stress , COVID-19/epidemiology , Cross-Sectional Studies , Female , Hospitals, General , Humans , Intention , Job Satisfaction , Male , Occupational Stress/epidemiology , Pandemics , Surveys and Questionnaires , Workplace
4.
Healthcare (Basel) ; 11(1)2022 Dec 26.
Article in English | MEDLINE | ID: mdl-36611531

ABSTRACT

The purpose of this study was to examine the mediating effects of mindfulness on the relationships between stress and quality of life among shift nurses. A descriptive cross-sectional survey design was conducted using purposive sampling of 206 shift nurses in a tertiary general hospital in Korea. Data were analyzed with descriptive statistics, Pearson correlation and multiple regression analysis using SPSS/WIN 26.0 program. There were significant correlations among stress, mindfulness and quality of life. The quality of life had a positive correlation with mindfulness (r = 0.52, p < 0.001) and a negative correlation with stress among nurses. Mindfulness acts as a mediator in explaining relationship between stress and quality of life. This study provide evidence for the role of mindfulness in the relationship between stress and quality of life in shift nurses. Mindfulness appears to be a protective factor against nurses' stress. If mindfulness-based interventions are developed and applied to improve the quality of life of shift nurses based on this study, it can help reduce their stress and improve the quality of life, which could ultimately improve the quality of nursing care for patients.

5.
Article in English | MEDLINE | ID: mdl-34360128

ABSTRACT

Married female nurses experience work-family conflict (WFC) as they manage excessive work and various working-hour types while rearing children and tending household chores, and as a result, they continuously constantly deliberate over quitting their job or moving to a different workplace. Married nurses were found to have shorter sleep duration and sleep latency compared to single nurses, and high job stress not only hinders their family life but also causes sleep problems. Depression is a classic negative emotion experienced by married working women who must manage both work and family. This study aims to examine WFC in married female nurses and investigate its predictors, namely depression and sleep quality. A total of 229 married female nurses completed a Google questionnaire link consisting of the Work-Family Conflict Scale, Sleep-Quality Scale, and the Center for Epidemiologic Studies Depression Scale (CES-D). Data were analyzed by descriptive statistics, t-test, ANOVA, LSD post hoc test, Pearson's correlation coefficients, and multiple regression using the SPSS/WIN 26.0 program. The average WFC score was 4.84 ± 1.12 (range 1-7); WFC showed a statistical difference according to a stage of the lifecycle (F = 7.12, p = 0.001) and perceived health (F = 12.01, p < 0.001). WFC was low among those in the non-parenthood stage of the lifecycle (ß = -0.26, p < 0.001), those with good (ß = -0.18, p = 0.011) or moderate perceived health (ß = -0.15, p = 0.023), and those without turnover intention (ß = -0.13, p = 0.016). On the other hand, WFC was high among those who were extremely dissatisfied with their job (ß = 0.16, p = 0.008) and those who had a high level of depression (ß = 0.22, p = 0.002); these variables explained 20.2% of WFC (F = 7.663, p < 0.001). Based on these results, subsequent studies should develop and implement coping programs that help reduce WFC and improve depression and sleep quality in married female nurses.


Subject(s)
Family Conflict , Nurses , Child , Cross-Sectional Studies , Depression/epidemiology , Female , Humans , Sleep , Surveys and Questionnaires , Workplace
6.
Article in English | MEDLINE | ID: mdl-34066366

ABSTRACT

Nursing students experience various stressors during their initial clinical practicum. As these stressors negatively affect learning and performance, coping strategies are essential. Therefore, this research study explored the relationship between coping styles and stress levels using a cross-sectional study with a convenience sample of 184 nursing students. Clinical practicum stress and coping styles were assessed via electronic questionnaires, and the data were analyzed using descriptive statistics, t-tests, and variance analyses. The highest score for clinical practice stress was for the practical education environment and practical work burden. The total stress score differed significantly according to coping style (t = -2.36, p = 0.020), and the total stress score of the passive coping group was higher. Among the sub-categories of stress, the scores of the education environment (t = -2.68, p = 0.008) and having undesirable role models (t = -2.14, p = 0.034) were significantly higher in the passive coping group. Although practical work burden was the highest stress factor in the active coping style group, the stress on the environment was highest in the passive coping group. The findings show that professors and clinical educators should recognize the various coping styles and incorporate different teaching methods in the clinical setting.


Subject(s)
Students, Nursing , Adaptation, Psychological , Cross-Sectional Studies , Humans , Preceptorship , Stress, Psychological/epidemiology , Surveys and Questionnaires
7.
Analyst ; 146(5): 1682-1688, 2021 Mar 07.
Article in English | MEDLINE | ID: mdl-33449063

ABSTRACT

Polydiacetylene (PDA), a conjugated polymer, has attracted attention for realization of a label-free real-time colorimetric biosensor because it exhibits large and rapid colorimetric responses upon the binding of biomolecules. This is due to the conformational distortion of its conjugated backbone. However, solid-state PDA biosensors for point-of-care diagnosis remain unexplored. We describe a highly sensitive solid-state biosensor based on PDA liposomes. We employed gold nanoparticles (AuNPs) on PDA liposomes as the molecular-binding-signal sensitizer, which provides additional conformational distortion in the backbone structure of PDA by exerting steric repulsion to the attached biomolecules. To prove the concept, AuNPs and a thrombin-binding-aptamer were individually functionalized on PDA liposomes, which were attached to a substrate for the detection of thrombin. We found that the sensitivity was enhanced 2.5 times in the presence of AuNPs compared with the case without AuNPs. Because the steric repulsion of the AuNPs is target-independent, we believe that our solid-state biosensor provides a path toward advanced solid-state biosensors.


Subject(s)
Aptamers, Nucleotide , Biosensing Techniques , Metal Nanoparticles , Colorimetry , Gold , Liposomes , Polyacetylene Polymer
8.
Small ; 15(28): e1901183, 2019 Jul.
Article in English | MEDLINE | ID: mdl-31136092

ABSTRACT

Highly conductive molecular wires are an important component for realizing molecular electronic devices and have to be explored in terms of interactions between molecules and electrodes in their molecular junctions. Here, new molecular wire junctions are reported to enhance charge transport through gold nanoparticle (AuNP)-linked double self-assembled monolayers (SAMs) of cobalt (II) bis-terpyridine molecules (e.g., Co(II)(tpyphS)2 ). Electrical characteristics of the double-SAM devices are explored in terms of the existence of AuNP. The AuNP linker in the Co(II)(tpyphS)2 -AuNP-Co(II)(tpyphS)2 junction acts as an electronic contact that is transparent to electrons. The weak temperature dependency of the AuNP-linked molecular junctions strongly indicates sequential tunneling conduction through the highest occupied molecular orbitals (HOMOs) of Co(II)(tpyphS)2 molecules. The electrochemical characteristics of the AuNP-Co(II)(tpyphS)2 SAMs reveal fast electron transfer through molecules linked by AuNP. Density functional theory calculations reveal that the molecular HOMO levels are dominantly affected by the formation of junctions. The intermolecular charge transport, controlled by the AuNP linker, can provide a rational design for molecular connection that achieves a reliable electrical connectivity of molecular electronic components for construction of molecular electronic circuits.

9.
J Med Food ; 22(6): 623-630, 2019 Jun.
Article in English | MEDLINE | ID: mdl-31021282

ABSTRACT

This study was designed to determine whether the ethanol extract of Artemisia princeps could inhibit the cariogenic activity of Streptococcus mutans. The increase in acid production and biofilm formation by S. mutans were evaluated. The expression levels of virulence factor genes were determined by performing the real-time polymerase chain reaction (PCR). The bactericidal effect was tested by confocal laser scanning microscopy. The A. princeps extract was observed to inhibit the growth of S. mutans at concentrations >0.05 mg/mL (P < .05). After using the safranin staining method, we found that the A. princeps extract had an inhibitory effect against biofilm formation at a concentration of >0.05 mg/mL. These experimental results were similar to that observed with the scanning electron microscopy. The results of the confocal microscopy revealed that the A. princeps extract at high concentrations of 0.4-3.2 mg/mL showed a bactericidal effect in a concentration-dependent manner. According to the results of the real-time PCR analysis, it was observed that the A. princeps extract inhibited the expression of virulence factor genes. These results suggest that A. princeps may inhibit the cariogenic activity of S. mutans, and may be useful as an anticariogenic agent.


Subject(s)
Anti-Bacterial Agents/pharmacology , Artemisia/chemistry , Bacterial Proteins/genetics , Biofilms/drug effects , Plant Extracts/pharmacology , Streptococcus mutans/drug effects , Streptococcus mutans/genetics , Virulence Factors/genetics , Bacterial Proteins/metabolism , Gene Expression Regulation, Bacterial/drug effects , Microbial Sensitivity Tests , Streptococcus mutans/growth & development , Streptococcus mutans/physiology , Virulence Factors/metabolism
10.
Jpn J Nurs Sci ; 16(3): 263-273, 2019 Jul.
Article in English | MEDLINE | ID: mdl-30259668

ABSTRACT

AIM: It was aimed to explore the effects of the long-term-care (LTC) hospital-nurse organizational culture type, job satisfaction, and job stress on nurses' happiness. METHODS: Included were 226 participants who were randomly selected among the nurses who were working in 17 LTC hospitals with ≥100 beds, located in five cities in South Korea. A multiple regression analysis was carried out in order to examine the factors affecting the happiness of the nurses. RESULTS: The happiness of the LTC hospital nurses was not high. Regarding the factors affecting their happiness, a higher feeling of happiness was evident when the estimation of their subjective health status was healthier, when they were in an organization with hierarchy-oriented culture properties, when they expressed a higher job satisfaction regarding autonomy, and when the number of task requests was lower. Among these factors, autonomy-based job satisfaction exerts the greatest effect. CONCLUSION: Based on these results, the development of personal health improvement programs for nurses' happiness should be required. In addition, hospitals need to be stably operated and managed to ensure organizational safety and the nurse managers should encourage the nurses to carry out their tasks with autonomy.


Subject(s)
Happiness , Job Satisfaction , Nursing Staff, Hospital/psychology , Occupational Stress , Organizational Culture , Adult , Attitude of Health Personnel , Cross-Sectional Studies , Female , Health Status , Humans , Long-Term Care , Middle Aged , Republic of Korea , Surveys and Questionnaires
11.
Nurse Educ Today ; 71: 54-59, 2018 Dec.
Article in English | MEDLINE | ID: mdl-30245256

ABSTRACT

BACKGROUND: Academic resilience is an important characteristic that helps nursing students, who must engage in intensive learning and clinical practice, to overcome academic stress and adapt to their school and the clinical field. OBJECTIVES: To determine the characteristics of nursing students with high academic resilience. DESIGN: This study used a cross-sectional design. SETTING: Three universities in South Korea. SUBJECTS: We recruited a convenience sample of 254 nursing students. METHODS: Academic resilience, general characteristics, clinical practice stress, clinical practice satisfaction, and social-affective capability were assessed via self-reported questionnaires. The collected data were analyzed using descriptive statistics, chi-squared test, and analysis of variance with Tukey's post hoc test. RESULTS: The mean academic resilience score was 3.79. A greater proportion of respondents with high levels of academic resilience had good interpersonal relationships (χ2 = 35.175, p < .001), high academic grades (χ2 = 30.968, p < .001), a role model (χ2 = 9.770, p = .033), and high satisfaction with their major (χ2 = 20.214, p = .001). Significant differences in the subscale scores for clinical practice stress, including burden of clinical tasks (F = 4.727, p = .010), conflict of interpersonal relations (F = 4.889, p = .008), and conflict with patients (F = 7.023, p = .001), were found among the academic resilience groups. We also observed differences in the subscale scores of clinical practice satisfaction, including practice content (F = 4.894, p = .008) and practice environment (F = 8.301, p < .001). Respondents in the high resilience group had higher social-affective capability scores than did those with lower resilience (F = 43.994, p < .001). CONCLUSION: Based on our results, students with high academic resilience are more likely to continue their studies and benefit from programs that strengthen their social-affective capability. We therefore propose that nursing school curriculum focus on enhancing social-affective capability.


Subject(s)
Self Efficacy , Students, Nursing/psychology , Adult , Analysis of Variance , Cross-Sectional Studies , Education, Nursing/organization & administration , Education, Nursing/standards , Educational Measurement/methods , Educational Measurement/standards , Female , Humans , Male , Republic of Korea , Surveys and Questionnaires
12.
Adv Sci (Weinh) ; 5(7): 1800068, 2018 Jul.
Article in English | MEDLINE | ID: mdl-30027040

ABSTRACT

An ambipolar channel layer material is required to realize the potential benefits of ambipolar complementary metal-oxide-semiconductor field-effect transistors, namely their compact and efficient nature, reduced reverse power dissipation, and possible applicability to highly integrated circuits. Here, a ternary metal chalcogenide nanocrystal material, FeIn2S4, is introduced as a solution-processable ambipolar channel material for field-effect transistors (FETs). The highest occupied molecular orbital and the lowest unoccupied molecular orbital of the FeIn2S4 nanocrystals are determined to be -5.2 and -3.75 eV, respectively, based upon cyclic voltammetry, X-ray photoelectron spectroscopy, and diffraction reflectance spectroscopy analyses. An ambipolar FeIn2S4 FET is successfully fabricated with Au electrodes (EF = -5.1 eV), showing both electron mobility (14.96 cm2 V-1 s-1) and hole mobility (9.15 cm2 V-1 s-1) in a single channel layer, with an on/off current ratio of 105. This suggests that FeIn2S4 nanocrystals may be a promising alternative semiconducting material for next-generation integrated circuit development.

13.
Molecules ; 23(4)2018 Apr 19.
Article in English | MEDLINE | ID: mdl-29671829

ABSTRACT

Diabetes mellitus is a chronic degenerative disease that causes long-term complications and represents a serious public health problem. In this manuscript, acankoreagenin isolated from the leaves of Acanthopanax gracilistylus (LAG) is thought to possess excellent anti-diabetic properties. In vitro, anti-diabetic activities were assessed based on the inhibitory activities with α-glucosidase (IC50 13.01 µM), α-amylase (IC50 30.81 µM), and PTP1B (IC50 16.39 µM). Acankoreagenin showed better anti-diabetic effects. Then, an investigation was performed to analyze the insulin secretion effects of the insulin-secreting cell line in RIN-m5F cells. It was found that acankoreagenin could increase the insulin release in RIN-m5F cells. It was also found that acankoreagenin reduced NO production, activity of caspase-3, and the reactive oxygen species levels in the cells injured by processing of cytokines. In western blotting, inactivation of NF-κB signaling was confirmed. Acankoreagenin (20 µM) showed a higher I-κBα expression and lower NF-κB expression than the control group and showed a better expression than the positive control L-NAME (1 mM) (p < 0.05). This study demonstrates the anti-diabetic effects of acankoreagenin in vitro and suggests acankoreagenin might offer therapeutic potential for treating diabetes mellitus.


Subject(s)
Eleutherococcus/chemistry , NF-kappa B/metabolism , Plant Leaves/chemistry , Triterpenes/pharmacology , Animals , Humans , Hypoglycemic Agents/pharmacology , Protein Tyrosine Phosphatase, Non-Receptor Type 1/metabolism , Signal Transduction/drug effects , alpha-Amylases/metabolism , alpha-Glucosidases/metabolism
14.
Angew Chem Int Ed Engl ; 56(40): 12122-12126, 2017 09 25.
Article in English | MEDLINE | ID: mdl-28791791

ABSTRACT

Information processing using molecular junctions is becoming more important as devices are miniaturized to the nanoscale. Herein, we report functional molecular junctions derived from double self-assembled monolayers (SAMs) intercalated between soft graphene electrodes. Newly assembled molecular junctions are fabricated by placing a molecular SAM/(top) electrode on another molecular SAM/(bottom) electrode by using a contact-assembly technique. Double SAMs can provide tunneling conjugation across the van der Waals gap between the terminals of each monolayer and exhibit new electrical functions. Robust contact-assembled molecular junctions can act as platforms for the development of equivalent contact molecular junctions between top and bottom electrodes, which can be applied independently to different kinds of molecules to enhance either the structural complexity or the assembly properties of molecules.

15.
J Phys Condens Matter ; 29(44): 445701, 2017 Nov 08.
Article in English | MEDLINE | ID: mdl-28850047

ABSTRACT

Superconductivity in graphene has been highly sought after for its promise in various device applications and for general scientific interest. Ironically, the simple electronic structure of graphene, which is responsible for novel quantum phenomena, hinders the emergence of superconductivity. Theory predicts that doping the surface of the graphene effectively alters the electronic structure, thus promoting propensity towards Cooper pair instability (Profeta et al (2012) Nat. Phys. 8 131-4; Nandkishore et al (2012) Nat. Phys. 8 158-63) [1, 2]. Here we report the emergence of superconductivity at 7.4 K in Li-intercalated few-layer-graphene (FLG). The absence of superconductivity in 3D Li-doped graphite underlines that superconductivity in Li-FLG arises from the novel electronic properties of the 2D graphene layer. These results are expected to guide future research on graphene-based superconductivity, both in theory and experiments. In addition, easy control of the Li-doping process holds promise for various device applications.

16.
Sci Rep ; 6: 39448, 2016 12 19.
Article in English | MEDLINE | ID: mdl-27991584

ABSTRACT

A band gap tuning of environmental-friendly graphene quantum dot (GQD) becomes a keen interest for novel applications such as photoluminescence (PL) sensor. Here, for tuning the band gap of GQD, a hexafluorohydroxypropanyl benzene (HFHPB) group acted as a receptor of a chemical warfare agent was chemically attached on the GQD via the diazonium coupling reaction of HFHPB diazonium salt, providing new HFHPB-GQD material. With a help of the electron withdrawing HFHPB group, the energy band gap of the HFHPB-GQD was widened and its PL decay life time decreased. As designed, after addition of dimethyl methyl phosphonate (DMMP), the PL intensity of HFHPB-GQD sensor sharply increased up to approximately 200% through a hydrogen bond with DMMP. The fast response and short recovery time was proven by quartz crystal microbalance (QCM) analysis. This HFHPB-GQD sensor shows highly sensitive to DMMP in comparison with GQD sensor without HFHPB and graphene. In addition, the HFHPB-GQD sensor showed high selectivity only to the phosphonate functional group among many other analytes and also stable enough for real device applications. Thus, the tuning of the band gap of the photoluminescent GQDs may open up new promising strategies for the molecular detection of target substrates.


Subject(s)
Graphite/chemistry , Quantum Dots/chemistry , Hydrogen Bonding , Luminescence , Pyrazines/chemistry
17.
Sci Rep ; 6: 33299, 2016 09 14.
Article in English | MEDLINE | ID: mdl-27624664

ABSTRACT

A novel gas sensor consisting of porous, non-stacked reduced graphene oxide (NSrGO)-heaxfluorohydoroxypropanyl benzene (HFHPB) nanosheets was successfully fabricated, allowing the detection of dimethyl methyl phosphonate (DMMP), similar to sarin toxic gas. The HFHPB group was chemically grafted to the NSrGO via a diazotization reaction to produce NSrGO-HFHPB. The NSrGO-HFHPB 3D film has a mesoporous structure with a large pore volume and high surface area that can sensitively detect DMMP and concurrently selectively signal the DMMP through the chemically-attached HFHPB. The DMMP uptake of the mesoporous NSrGO-HFHPB was 240.03 Hz, 12 times greater than that of rGO-HFHPB (20.14 Hz). In addition, the response rate of NSrGO-HFHPB was faster than that of rGO-HFHPB, an approximately 3 times more rapid recovery due to the mesoporous structure of the NSrGO-HFHPB. The NSrGO-HFHPB sensor exhibited long-term stability due to the use of robust carbon and resulting high resistance to humidity.


Subject(s)
Graphite/chemistry , Nerve Agents/isolation & purification , Pyrazines/isolation & purification , Humans , Nanotubes, Carbon/chemistry , Nerve Agents/toxicity , Porosity , Pyrazines/toxicity
18.
Article in English | MEDLINE | ID: mdl-27190540

ABSTRACT

Pangdahai is a traditional Chinese drug, specifically described in the Chinese Pharmacopoeia as the seeds of Sterculia lychnophora Hance. Here, we separated S. lychnophora husk and kernel, analyzed the nutrient contents, and investigated the inhibitory effects of S. lychnophora ethanol extracts on cariogenic properties of Streptococcus mutans, important bacteria in dental caries and plaque formation. Ethanol extracts of S. lychnophora showed dose-dependent antibacterial activity against S. mutans with significant inhibition at concentrations higher than 0.01 mg/mL compared with the control group (p < 0.05). Furthermore, biofilm formation was decreased by S. lychnophora at concentrations > 0.03 mg/mL, while bacterial viability was decreased dose-dependently at high concentrations (0.04, 0.08, 0.16, and 0.32 mg/mL). Preliminary phytochemical analysis of the ethanol extract revealed a strong presence of alkaloid, phenolics, glycosides, and peptides while the presence of steroids, terpenoids, flavonoids, and organic acids was low. The S. lychnophora husk had higher moisture and ash content than the kernel, while the protein and fat content of the husk were lower (p < 0.05) than those of the kernel. These results indicate that S. lychnophora may have antibacterial effects against S. mutans, which are likely related to the alkaloid, phenolics, glycosides, and peptides, the major components of S. lychnophora.

19.
Article in English | MEDLINE | ID: mdl-26693033

ABSTRACT

OBJECTIVE: To examine long-term (11-month) antidepressant efficacy of desvenlafaxine 50 mg/d across a broad range of clinical and functional outcomes in patients with major depressive disorder. METHOD: Adult outpatients (≥ 18 years) with major depressive disorder (DSM-IV criteria) and a 17-item Hamilton Depression Rating Scale (HDRS-17) total score ≥ 20 at screening and baseline who responded to 8 weeks of open-label desvenlafaxine 50 mg/d and had a continuing stable response through week 20 were randomly assigned to receive placebo or desvenlafaxine 50 mg/d in a 6-month, double-blind, randomized withdrawal period. Depressive symptoms were evaluated using the HDRS-17, 6-item HDRS, and Clinical Global Impressions-Severity of Ilness and -Improvement (CGI-S, CGI-I). Health outcomes included the Work Productivity and Activity Impairment (WPAI) questionnaire and the World Health Organization 5-Item Well-Being Index (WHO-5). The trial was conducted from June 2009 to March 2011 at 87 study sites in 14 countries worldwide. RESULTS: Of 874 patients enrolled in open-label treatment, 548 patients were randomly assigned to receive double-blind placebo (n = 276) or desvenlafaxine 50 mg/d (n = 272). At the end of the 6-month double-blind treatment, improvements in depressive symptoms were better maintained among the desvenlafaxine- than placebo-treated patients on all efficacy endpoints (all P ≤ .001); in the desvenlafaxine group, 21.8% (vs 42.9% in the placebo group) had CGI-I ratings of 5, 6, and 7 (minimally worse/much worse/very much worse), and 74.4% met criteria for remission (placebo: 54.2%). WPAI and WHO-5 scores indicated significantly better productivity and well-being with continued desvenlafaxine (vs placebo, P ≤ .001). CONCLUSIONS: Long-term treatment with desvenlafaxine 50 mg/d maintained improvements in major depressive disorder among adult outpatients who exhibited a stable therapeutic response. TRIAL REGISTRATION: ClinicalTrials.gov identifier: NCT00887224.

20.
Int Clin Psychopharmacol ; 30(6): 307-15, 2015 Nov.
Article in English | MEDLINE | ID: mdl-26230270

ABSTRACT

The primary objective of this post-hoc analysis was to evaluate the effect of short-term treatment with desvenlafaxine versus placebo on sexual dysfunction (SD), assessed from Arizona Sexual Experiences Scale scores, in adult outpatients with major depressive disorder. Data from three randomized, double-blind, placebo-controlled trials of 50 or 100 mg/day desvenlafaxine for major depressive disorder were pooled. SD status, determined from Arizona Sexual Experiences Scale scores, was assessed at baseline and week 8, last observation carried forward. Subgroup analyses addressed the effects of sex, baseline SD, and antidepressant response. At week 8, last observation carried forward (n=1562), SD rates were 54, 47, and 49% for 50 mg/day desvenlafaxine, 100 mg/day desvenlafaxine, and placebo, respectively [adjusted odds ratios (95% confidence interval) vs. placebo: 1.205 (0.928, 1.564) and 1.129 (0.795, 1.604), respectively]. The treatment by baseline SD interaction approached statistical significance (P=0.0663), mainly driven by poorer scores for desvenlafaxine versus placebo in the 100 mg group. Treatment by sex interactions were not statistically significant. Small but statistically significant treatment by sex interactions were observed for sex drive (P=0.0011) and ease of erection/lubrication (P=0.0151). Although there was no overall effect of desvenlafaxine on SD, a treatment by baseline SD interaction was suggested for 100 mg desvenlafaxine.


Subject(s)
Antidepressive Agents/therapeutic use , Depressive Disorder, Major/drug therapy , Desvenlafaxine Succinate/therapeutic use , Sexual Dysfunctions, Psychological/drug therapy , Adult , Antidepressive Agents/administration & dosage , Antidepressive Agents/adverse effects , Desvenlafaxine Succinate/administration & dosage , Desvenlafaxine Succinate/adverse effects , Dose-Response Relationship, Drug , Double-Blind Method , Erectile Dysfunction/drug therapy , Female , Humans , Libido , Male , Middle Aged , Psychiatric Status Rating Scales , Sex Factors
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