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1.
Int J Surg ; 110(4): 1913-1918, 2024 Apr 01.
Article in English | MEDLINE | ID: mdl-38265436

ABSTRACT

BACKGROUND: Contraction-type lymphatic vessels (LV) are considered suboptimal for lymphaticovenous anastomosis (LVA). However, despite these pathological changes, their functionality and link to outcomes have not been fully elucidated. The aim of this study was to determine the impact on outcomes when contraction-type LVs were used for LVA compared to the noncontraction-type (normal + ectatic) counterpart for treating lower limb lymphedema. STUDY DESIGN: Eighty-three patients with gynecologic cancer-related unilateral lower-limb lymphedema who underwent LVA as their primary treatment were enrolled in this study. The study group included 20 patients who used only contraction-type LVs. An additional 63 patients (control group) received noncontraction-type LVs only. Patients with a history of LVA, liposuction, or excisional therapy were excluded. Patient characteristics, intraoperative findings, functional parameters, and pre-LVA and post-LVA volume changes were recorded and matched using propensity scores. The primary endpoint was the volume change at 6/12 months after LVA. RESULTS: After matching, 20 patients were included in each group. All parameters were matched, except that the study group still had a significantly inferior indocyanine green (ICG)-positive ratio, lymph flow-positive ratio, and washout-positive ratios ( P <0.001, P =0.003, and P <0.001, respectively) when compared to the control group after matching. However, at 1-year follow-up, the postoperative percentage volume reduction was comparable between the groups ( P= 0.619). CONCLUSION: The use of contraction-type LVs for LVA is encouraged when no other LVs are available.


Subject(s)
Anastomosis, Surgical , Lower Extremity , Lymphatic Vessels , Lymphedema , Propensity Score , Humans , Female , Middle Aged , Lymphedema/surgery , Lymphedema/etiology , Lymphatic Vessels/surgery , Retrospective Studies , Lower Extremity/surgery , Aged , Adult , Treatment Outcome , Genital Neoplasms, Female/surgery , Genital Neoplasms, Female/complications
2.
Sci Data ; 10(1): 923, 2023 Dec 21.
Article in English | MEDLINE | ID: mdl-38129417

ABSTRACT

The reproductive success of birds is closely tied to the characteristics of their nests. It is crucial to understand the distribution of nest traits across phylogenetic and geographic dimensions to gain insight into bird evolution and adaptation. Despite the extensive historical documentation on breeding behavior, a structured dataset describing bird nest characteristics has been lacking. To address this gap, we have compiled a comprehensive dataset that characterizes three ecologically and evolutionarily significant nest traits-site, structure, and attachment-for 9,248 bird species, representing all 36 orders and 241 out of the 244 families. By defining seven sites, seven structures, and four attachment types, we have systematically classified the nests of each species using information from text descriptions, photos, and videos sourced from online databases and literature. This nest traits dataset serves as a valuable addition to the existing body of morphological and ecological trait data for bird species, providing a useful resource for a wide range of avian macroecological and macroevolutionary research.


Subject(s)
Birds , Nesting Behavior , Animals , Breeding , Phylogeny , Reproduction
3.
J Tradit Complement Med ; 13(4): 389-396, 2023 Jul.
Article in English | MEDLINE | ID: mdl-37396153

ABSTRACT

Background and aim: A better understanding of irreversible prognoses in palliative care is crucial for improving patients' quality of life and their sense of dignity. We examined whether measurements of meridian electrical conductance can noninvasively and objectively predict survival time in a hospice patient population. Experimental procedure: This was a single-center cohort study. Between 2019 and 2020, we measured skin conductance from 24 representative acupoints of 12 meridians on both sides of the body in 181 advanced cancer patients within 48 h of hospitalization and monitored their survival time. The Palliative Prognostic Score (PaP Score) was calculated for each patient, classifying them into one of three prognosis groups: Group A, B, or C. Factors associated with short-term and long-term survival were identified using multivariate regression analysis. Statistical differences in survival times were analyzed between the meridian electrical conductance measurements and PaP Scores. Results and conclusion: Analyses of the clinicopathological data from terminal cancer patients revealed that male sex, mean meridian electrical conductance measurements of ≤8.8 µA, and PaP Scores in Group C were independent predictors of short-term survival. Mean meridian electrical conductance measurements of ≤8.8 µA demonstrated good sensitivity (85.1%) and adequate specificity (60.6%) for short-term survival. A survival curve analysis revealed a mortality rate of 90.6% at 30 days among patients with meridian electrical conductance measurements of ≤8.8 µA. A mean meridian electrical conductance measurement of ≤8.8 µA can objectively assess short-term survival with advanced cancer and reduce nonbeneficial medical treatment.

4.
J Am Coll Surg ; 235(2): 227-239, 2022 08 01.
Article in English | MEDLINE | ID: mdl-35839398

ABSTRACT

BACKGROUND: Although satisfactory volume reduction in secondary unilateral lower limb lymphedema after lymphaticovenous anastomosis (LVA) in the affected limb has been well reported, alleviation of muscle edema and the impact of LVA on the contralateral limb have not been investigated. STUDY DESIGN: This retrospective cohort study enrolled patients who underwent supermicrosurgical LVA between November 2015 and January 2017. Pre- and post-LVA muscle edema were assessed using fractional anisotropy (FA) and apparent diffusion coefficient (ADC). The primary endpoint was changes in limb/subfascial volume assessed with magnetic resonance volumetry at least 6 months after LVA. RESULTS: Twenty-one patients were enrolled in this study. Significant percentage reductions in post-LVA muscle edema were found in the affected thigh (83.6% [interquartile range = range of Q1 to Q3; 29.8-137.1] [FA], 53.3% [27.0-78.4] [ADC]) as well as limb (21.7% [4.4-26.5]) and subfascial (18.7% [10.7-39.1]) volumes. Similar findings were noted in the affected lower leg: 71.8% [44.0-100.1] (FA), 59.1% [45.8-91.2] (ADC), 21.2% [6.8-38.2], and 28.2% [8.5-44.8], respectively (all p < 0.001). Significant alleviation of muscle edema was also evident in the contralateral limbs (thigh: 25.1% [20.4-57.5] [FA]; 10.7% [6.6-17.7] [ADC]; lower leg: 47.1% [35.0-62.8] [FA]; 14.6% [6.5-22.1] [ADC]; both p < 0.001), despite no statistically significant difference in limb and subfascial volumes. CONCLUSIONS: Our study found significant reductions in muscle edema and limb/subfascial volumes in the affected limb after LVA. Our findings regarding edema in the contralateral limb were consistent with possible lymphedema-associated systemic influence on the unaffected limb, which could be surgically relieved.


Subject(s)
Lymphedema , Anastomosis, Surgical/adverse effects , Edema/etiology , Edema/pathology , Humans , Lower Extremity/diagnostic imaging , Lower Extremity/surgery , Lymphedema/diagnostic imaging , Lymphedema/etiology , Lymphedema/surgery , Magnetic Resonance Imaging , Muscles/pathology , Muscles/surgery , Retrospective Studies
5.
J Clin Med ; 11(11)2022 May 30.
Article in English | MEDLINE | ID: mdl-35683479

ABSTRACT

Despite an increased incidence of secondary lower limb lymphedema (LLL) and severity of comorbidities with age, the impact of age on the effectiveness of lymphaticovenous anastomosis (LVA) in the older patients remains unclear. Methods: This retrospective cohort study enrolled older patients (age > 65 years) with secondary unilateral LLL. All patients underwent supermicrosurgical LVA. Demographic data and intraoperative findings including lymphatic vessel (LV) diameter, LV functionality (indocyanine green-enhanced and Flow positivity), and lymphosclerosis classification were recorded. Magnetic resonance volumetry was used for measuring preoperative and postoperative volume changes at 6 months and one year after LVA as primary and secondary endpoints. Results: Thirty-two patients (29 females/3 males) with a median age of 71.0 years [range, 68.0 to 76.3] were enrolled. The median duration of lymphedema was 6.4 [1.0 to 11.7] years. The median LV diameter was 0.7 [0.5 to 0.8] mm. The percentage of ICG-enhanced and Flow-positive LVs were 89.5% and 85.8%, respectively. The total percentage of suitable LVs (s0 and s1) for LVA based on lymphosclerosis classification was 75.9%. There were significant six-month and one-year post-LVA percentage volume reductions compared to pre-LVA volume (both p < 0.001). A significant reduction in cellulitis incidence was also noted after LVA (p < 0.001). No surgical or postoperative complications were found. Conclusion: Relief of secondary LLL was achievable through LVA in older patients who still possessed favorable LV characteristics, including larger LV diameters as well as a high proportion of functional LVs with a low grade of lymphosclerosis.

6.
Int J Surg ; 104: 106720, 2022 Aug.
Article in English | MEDLINE | ID: mdl-35724806

ABSTRACT

BACKGROUND: In addition to antegrade anastomosis, retrograde anastomosis has been thought to offer further improvements after lymphaticovenous anastomosis (LVA) by bypassing the retrograde lymphatic flow. However, this concept has yet to be validated. The aim of this study was to determine the impacts on outcomes of performing both retrograde and antegrade anastomosis, as compared to antegrade-only anastomosis for treating lower limb lymphedema. STUDY DESIGN: This was a retrospective cohort propensity score-matched study. Eighty-seven patients with gynecologic cancer-related lower limb lymphedema were enrolled, including 58 patients who had received both antegrade and retrograde anastomoses (Group I) and 29 patients who had received antegrade-only anastomoses (Group II) as the control group. LVA was the primary treatment. Patients who had previous LVA, liposuction, or excisional therapy were excluded. Patient characteristics, intraoperative findings, and functional parameters including the ratio of indocyanine green-enhanced and flow-positive lymphatic vessels were recorded. Magnetic resonance volumetry was used for outcome assessments. The primary endpoint was the volume change at 6 months after LVA. RESULTS: After matching, a total of 26 patients have remained in each group. All parameters were matched except that Group I still had significantly more median LVA performed compared to Group II (8 [IQR: 5.3-10.0] vs. 5.5 [4.3-6.0], p = 0.001, respectively). Group II showed more post-LVA improvements at six-month and one-year follow-up compared to Group I but without statistically significant differences. CONCLUSION: The use of supplementary retrograde anastomoses is discouraged since it may lead to inferior post-LVA outcome compared to antegrade-only anastomoses.


Subject(s)
Lymphedema , Neoplasms , Anastomosis, Surgical , Female , Humans , Lower Extremity , Propensity Score , Retrospective Studies , Treatment Outcome
7.
Article in English | MEDLINE | ID: mdl-35564659

ABSTRACT

Advance care planning (ACP) and advance directives (ADs) ensure patient autonomy in end-of life care. The number of ADs made and followed in Taiwan is still lacking. This study aimed to determine the factors that influence the willingness to participate in ACP among outpatients in Taiwan. In this study, we conducted a cross-sectional survey based on convenient sampling methods. The questionnaire included questions about participants' basic sociodemographic information, knowledge of ACP, and awareness of ACP. A total of 198 adults who were outpatients of a family medicine clinic in an affiliated hospital in Taiwan were recruited. The associations between each variable were evaluated using the χ2 test. The adjusted odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using the logistic regression method to examine the influence of each variable on willingness to participate in ACP. Being happy and being a healthcare professional were positively correlated with ACP participation. A lack of ACP knowledge (OR = 0.30 in model A and OR = 0.42 in model C), valuing "Reducing families' end-of-life decision-making burden" (OR = 2.53 in model B and OR = 2.65 in model C), and a "Belief in a good death" (OR = 4.02 in model B and OR = 4.10 in Model C) were the main factors affecting subjects' willingness to participate in ACP. Knowing which factors influence willingness to participate in ACP helps in the promotion of ACP. Continuously educating both the general public and healthcare professionals strengthens knowledge about the right to autonomy, about its associated laws, and about the ACP process, and thus, programs should be created to provide this education. Additionally, taking into account the differences between cultures can be helpful.


Subject(s)
Advance Care Planning , Outpatients , Adult , Cross-Sectional Studies , Humans , Pilot Projects , Taiwan
8.
Plast Reconstr Surg ; 149(5): 1227-1233, 2022 05 01.
Article in English | MEDLINE | ID: mdl-35311756

ABSTRACT

BACKGROUND: The default setting of microscope-integrated near-infrared fluorescence (MINIRF) using indocyanine green for locating superficial lymphatic vessels during lymphaticovenous anastomosis was limited to less than or equal to 70 percent intensity. The authors investigated whether maximizing the MINIRF intensity setting could increase the number of deep lymphatic vessels being found, thereby increasing the total number of lymphatic vessels for lymphaticovenous anastomosis. METHODS: This longitudinal cohort study enrolled 94 patients (86 female and eight male patients) with lower limb lymphedema. Superficial lymphatic vessels were identified with the MINIRF default setting, before maximal intensity was used for deep lymphatic vessel detection. Primary/secondary endpoints included the number of superficial and deep lymphatic vessels identified. No control was used. Demographic data, intraoperative findings [including superficial and deep (indocyanine green-enhanced and non-indocyanine green-enhanced) lymphatic vessels], and severity of lymphosclerosis were recorded. Data in three regions of the lower limb (i.e., foot/above ankle, below knee, and thigh) were compared. RESULTS: A total of 481 lymphatic vessels were identified, comprising 260 superficial and 221 deep lymphatic vessels. The median number of lymphatic vessels found per patient was five (interquartile range, four to six), and the median lymphatic vessel size was 0.63 mm (interquartile range, 0.5 to 0.8 mm). No difference was found in number (p = 0.360), size (p = 0.215), or severity of lymphosclerosis (p = 0.226) between the overall superficial and deep lymphatic vessels in the three lower limb regions. CONCLUSIONS: Deep lymphatic vessel detection can be aided by maximizing MINIRF intensity. These deep lymphatic vessels are comparable to superficial lymphatic vessels in number, size, and functionality, making them potentially valuable for lymphedema improvement. CLINICAL QUESTION/LEVEL OF EVIDENCE: Diagnostic, II.


Subject(s)
Lymphatic Vessels , Lymphedema , Anastomosis, Surgical , Cohort Studies , Female , Humans , Indocyanine Green , Longitudinal Studies , Lymphatic Vessels/diagnostic imaging , Lymphatic Vessels/surgery , Lymphedema/diagnostic imaging , Lymphedema/surgery , Lymphography , Male , Microsurgery
9.
J Inflamm Res ; 15: 761-773, 2022.
Article in English | MEDLINE | ID: mdl-35153500

ABSTRACT

PURPOSE: This study aims at profiling the expression of dysregulated genes in circulating monocytes of patients with cancer-related lower limb lymphedema before and after treatment with supermicrosurgical lymphaticovenous anastomosis (LVA). MATERIALS AND METHODS: This prospective longitudinal cohort study enrolled 51 women with post-treatment gynecological cancer, including those with unilateral lymphedema (study group, n = 25) and those without (control group, n = 26). Venous blood samples obtained from the study group before and after LVA and those from the controls were sent for next-generation sequencing, which was validated by real-time PCR. Dysregulated gene expression in the study group, relative to expression in the controls, was recorded before LVA. After one month, postoperative changes in the expression of the identified genes were evaluated. Protein-protein interaction (PPI) was used to investigate dysregulated genes whose expression returned to baseline levels after LVA. RESULTS: Of the 148 preoperative dysregulated genes, which comprised 108 up- and 40 down-regulated genes, 78 genes, consisting of 69 up- and 9 down-regulated genes, showed post-LVA recovery to baseline levels. Through PPI analysis, five functional modules involving immunity, lipid metabolism, oxidative stress, transcriptional regulators, and tumor suppression, as well as six hub genes (CCL2, LPL, PDK4, FOXO3, EGR1, and DUSP5), were identified. Cross-linking and co-regulated genes between modules were also identified. CONCLUSION: Localized lymphedema leads to dysregulated gene expression in circulating monocytes. The current study is the first to identify the hub genes related to lymphedema and demonstrate the recovery of some dysregulated genes after LVA.

10.
Article in English | MEDLINE | ID: mdl-34501627

ABSTRACT

Previous research has shown that care experiences influence the willingness for advance care planning (ACP). Family caregivers have increased contact with medical providers and procedures in the process of caring, and they have also witnessed the disability and suffering of patients. However, few studies have focused on family caregivers to understand their attitudes towards ACP. The aim of this cross-sectional study was to acknowledge family caregivers' attitudes towards ACP and the related factors, especially care stress and experiences during the care process. We interviewed 291 family caregivers, and the demographics of the caregivers and care recipients, the clinical condition of care recipients, and the caregivers' stress and care experiences were collected via anonymous questionnaires. Multiple logistic regression was performed to determine the factors associated with the attitudes towards ACP. We found that the caregiver having private health insurance (p < 0.001) and a completed DNR (p < 0.001) and the experience of recipients admitted to the ICU (p = 0.019) are associated with caregiver's positive attitudes towards ACP. The greater the stress of conflict within a family over care decisions, the more participants think that ACP is important (p = 0.011). It is suggested that (1) in a family-centered culture, a public strategy for promoting ACP could be to emphasize the benefits of ACP in reducing family conflicts, and (2) when people make financial plans, they should also be provided with information about ACP to enable them to form a more integral plan for their future.


Subject(s)
Advance Care Planning , Disabled Persons , Attitude , Caregivers , Cross-Sectional Studies , Humans
11.
J Clin Med ; 10(14)2021 Jul 15.
Article in English | MEDLINE | ID: mdl-34300287

ABSTRACT

BACKGROUND: For lymphedema patients who received a vascularized lymph node flap transfer (VLNT) as their primary treatment, what are the treatment options when they seek further improvement? With recent publications supporting the use of lymphaticovenous anastomosis (LVA) for treating severe lymphedema, we examined whether LVA could benefit post-VLNT patients seeking further improvement. METHODS: This retrospective cohort study enrolled eight lymphedema patients with nine lymphedematous limbs (one patient suffered from bilateral lower limb lymphedema) who had received VLNT as their primary surgery. Patients with previous LVA, liposuction, excisional therapy, or incomplete data were excluded. LVA was performed on nine lower lymphedematous limbs. Demographic data and intraoperative findings were recorded. Preoperative and postoperative limb volumes were measured with magnetic resonance volumetry. The primary outcome was the limb volume measured 6 months post-LVA. RESULTS: The median duration of lymphedema before LVA was 10.5 (4.9-15.3) years. The median waiting time between VLNT and LVA was 41.4 (22.3-97.9) months. The median volume gained in the lymphedematous limb was 3836 (2505-4584) milliliters (mL). The median post-LVA follow-up period was 18 (6-30) months. Significant 6-month and 1-year post-LVA percentage volume reductions were found compared to pre-LVA volume (both p < 0.001). CONCLUSION: Based on the results from this study, the authors recommend the use of LVA as a secondary procedure for post-VLNT patients seeking further improvement.

12.
J Clin Med ; 10(7)2021 Apr 06.
Article in English | MEDLINE | ID: mdl-33917571

ABSTRACT

BACKGROUND: Excess lymphedematous tissue causes excessive oxidative stress in lymphedema. Lymphaticovenous anastomosis (LVA) supermicrosurgery is currently emerging as the first-line surgical intervention for lymphedema. No data are available regarding the changes in serum proteins correlating to oxidative stress and antioxidant capacity before and after LVA. METHODS: A total of 26 patients with unilateral lower limb lymphedema confirmed by lymphoscintigraphy were recruited, and venous serum samples were collected before (pre-LVA) and after LVA (post-LVA). In 16 patients, the serum proteins were identified by isobaric tags for relative and absolute quantitation-based quantitative proteomic analysis with subsequent validation of protein expression by enzyme-linked immunosorbent assay. An Oxidative Stress Panel Kit was used on an additional 10 patients. Magnetic resonance (MR) volumetry was used to measure t limb volume six months after LVA. RESULTS: This study identified that catalase (CAT) was significantly downregulated after LVA (pre-LVA vs. post-LVA, 2651 ± 2101 vs. 1448 ± 593 ng/mL, respectively, p = 0.033). There were significantly higher levels of post-LVA serum total antioxidant capacity (pre-LVA vs. post-LVA, 441 ± 81 vs. 488 ± 59 µmole/L, respectively, p = 0.031) and glutathione peroxidase (pre-LVA vs. post-LVA, 73 ± 20 vs. 92 ± 29 U/g, respectively, p = 0.018) than pre-LVA serum. In addition, after LVA, there were significantly more differences between post-LVA and pre-LVA serum levels of CAT (good outcome vs. fair outcome, -2593 ± 2363 vs. 178 ± 603 ng/mL, respectively, p = 0.021) and peroxiredoxin-2 (PRDX2) (good outcome vs. fair outcome, -7782 ± 7347 vs. -397 ± 1235 pg/mL, respectively, p = 0.037) in those patients with good outcomes (≥40% volume reduction in MR volumetry) than those with fair outcomes (<40% volume reduction in MR volumetry). CONCLUSIONS: The study revealed that following LVA, differences in some specific oxidative stress markers and antioxidant capacity can be found in the serum of patients with lymphedema.

13.
Biodivers Data J ; 8: e49735, 2020.
Article in English | MEDLINE | ID: mdl-32508508

ABSTRACT

BACKGROUND: Species traits affect how a species interacts with the environment and other species and thus determine the role of the species in an ecosystem. They affect not only population dynamics of a species across space and over time, but also community structure and function through their key role in the community assembly processes. Information on species traits is also highly relevant for conservation planning as they determine the adaptive ability of a species in the face of environmental changes. However, information on species traits is usually scarce and sparsely distributed amongst diverse types of literature and sources. Difficulty in accessing comprehensive information on species traits has formed an essential knowledge gap, limiting our understanding of biodiversity patterns and ecosystem functioning and preventing effective conservation. Even for birds, a well-studied taxon, comprehensive trait information is still unavailable or distributed across different sources for many species. NEW INFORMATION: In this study, we compiled information from a variety of sources on 23 traits for all breeding birds, including 157 resident and 14 summer visiting species, in Taiwan and surrounding islands. The 23 traits include those related to the movement patterns, morphology, geographic distributions, activity patterns, feeding behaviour, habitat use, and breeding behaviour and strategies of the species. The trait information was obtained, not only from published literature and datasets, but also from unpublished banding records and specimen measurements. The dataset also contains derived traits, including the elevation and temperature boundaries of species distribution ranges in Taiwan. In addition, structured information on nest characters, which is seldom compiled in trait datasets, has been made available, for the first time, for the breeding birds in Taiwan. Therefore, the most comprehensive trait dataset to date on breeding birds in Taiwan will allow trait-based research and applications in diverse topics and thus enhance our understanding of the patterns and dynamics of breeding bird diversity and its functions in Taiwan.

14.
JMIR Mhealth Uhealth ; 8(4): e15780, 2020 04 30.
Article in English | MEDLINE | ID: mdl-32352390

ABSTRACT

BACKGROUND: Evidence has shown that breast cancer self-management support from mobile health (mHealth) apps can improve the quality of life of survivors. Although many breast cancer self-management support apps exist, few papers have documented the procedure for the development of a user-friendly app from the patient's perspective. OBJECTIVE: This study aimed to investigate the information needs of Taiwanese women with breast cancer to inform the development of a self-management support mHealth app. METHODS: A 5-step design thinking approach, comprising empathy, define, ideate, prototype, and test steps, was used in the focus groups and individual interviews conducted to collect information on the requirements and expectations of Taiwanese women with breast cancer with respect to the app. A thematic analysis was used to identify information needs. RESULTS: A total of 8 major themes including treatment, physical activity, diet, emotional support, health records, social resources, experience sharing, and expert consultation were identified. Minor themes included the desire to use the app under professional supervision and a trustworthy app manager to ensure the credibility of information. CONCLUSIONS: The strengths of the design thinking approach were user-centered design and cultural sensitivity. The results retrieved from each step contributed to the development of the app and reduction of the gap between end users and developers. An mHealth app that addresses these 8 main themes can facilitate disease self-management for Taiwanese women with breast cancer.


Subject(s)
Breast Neoplasms , Mobile Applications , Self-Management , Telemedicine , Breast Neoplasms/therapy , Female , Humans , Quality of Life , Taiwan
15.
Stud Health Technol Inform ; 245: 1353, 2017.
Article in English | MEDLINE | ID: mdl-29295432

ABSTRACT

The purpose of this study was to evaluate the Clinical Nursing Information System (CNIS) in Taiwan regional hospital. In 2016, a total of 333 nurses responded to the Technology Acceptance Model-based questionnaire after 15 months of CNIS implementation. The results showed positive acceptance toward CNI, especially among those nurses who were younger, those who worked as administrative managers or in non-critical care units, and had advanced computer skills.


Subject(s)
Nursing Informatics , Nursing Staff, Hospital , Attitude of Health Personnel , Computer Systems , Hospitals , Humans , Surveys and Questionnaires , Taiwan
16.
J Mater Chem B ; 5(7): 1507-1517, 2017 Feb 21.
Article in English | MEDLINE | ID: mdl-32264641

ABSTRACT

The use of nanotechnology to overcome multidrug resistance (MDR) in cancer cells has been predominant. Herein, we report the conjugation of copper(ii)-doxorubicin complexes on the surfaces of layered double hydroxide nanoparticles (LDHs) along with ascorbic acid intercalation in the gallery space to demonstrate synergistic effects to conquer MDR. The pH-sensitive release of doxorubicin (Dox) and the sustained release of ascorbic acid (AA) generate high amounts of hydrogen peroxide intracellularly that concomitantly results in conversion to cytotoxic free radicals through a copper(ii)-catalyzed Fenton-like reaction. Therefore, the combination of the chemotherapeutic agent (Dox) and free radical attack can devastate the MDR for effective cancer treatment through the co-delivery system.

17.
Clin Gastroenterol Hepatol ; 15(6): 872-879.e1, 2017 Jun.
Article in English | MEDLINE | ID: mdl-27498176

ABSTRACT

BACKGROUND & AIMS: The serrated pathway is a distinct pathway of colorectal carcinogenesis that has been implicated in development of a substantial proportion of interval colorectal cancers. The fecal immunochemical test (FIT) detects early neoplasms with a higher level of sensitivity than the guaiac test. We investigated the sensitivity of the FIT in detection of sessile serrated adenomas/polyps (SSA/Ps). METHODS: We performed a prospective study of 6198 asymptomatic subjects (mean age, 59.0 ± 7.0 years) who received concurrent screening colonoscopies and FITs at the Health Management Center of National Taiwan University Hospital from August 2010 through November 2014. The sensitivity of FIT for conventional adenoma, advanced adenoma, and SSA/P at different cutoffs was calculated, and results were compared by using multivariate analysis adjusted for potential confounders. RESULTS: Prevalence values of SSA/P, adenoma, and advanced adenoma were 1.4%, 20.2%, and 5.5%, respectively. At cutoffs of 10, 15, and 20 µg hemoglobin/g feces, the FIT detected all SSA/Ps with 12.3%, 6.2%, and 6.2% sensitivity, large SSA/Ps with 18.4%, 10.5%, and 10.5% sensitivity, and advanced adenomas with 32.4%, 24.5%, and 20.9% sensitivity, respectively. Multivariate analysis revealed that positive results from the FIT did not differ significantly between individuals with SSA/P and those with non-advanced adenoma or those with negative findings from colonoscopy. Patients with large SSA/Ps were less likely to have positive results from the FIT than patients with advanced adenoma, with odds ratios of 0.44 (95% confidence interval [CI], 0.18-1.05), 0.30 (95% CI, 0.10-0.90), and 0.37 (95% CI, 0.12-1.12) at cutoffs of 10, 15, and 20 µg hemoglobin/g feces, respectively, after adjusting for lesion size, even with synchronous conventional adenoma. CONCLUSIONS: In a prospective study of 6198 subjects receiving the FIT and colonoscopy, we found that the FIT detected SSA/Ps with significantly lower levels of sensitivity than conventional adenoma. Further studies are needed to determine the effects of these findings on the effectiveness of FIT-based colorectal cancer screening program.


Subject(s)
Adenoma/diagnosis , Colorectal Neoplasms/diagnosis , Diagnostic Tests, Routine/methods , Feces/chemistry , Immunochemistry/methods , Polyps/diagnosis , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Prospective Studies , Sensitivity and Specificity , Taiwan
18.
World Hosp Health Serv ; 51(4): 19-21, 2015.
Article in English | MEDLINE | ID: mdl-26867341

ABSTRACT

Hospice palliative care for terminal patients is necessary, yet challenges are on the way worldwide. This study demonstrated that hospice palliative care has been quickly developed in Taiwan due to the support of the National Health Insurance system, the promotion by civil societies and religious groups, patient's legal right for DNR, easier access to pain killers through medical prescription, and well-planned hospice staff training programs. This paper introduces how hospice consultation is provided by a comprehensive hospice palliative team at Changhua Christian Hospital to establish trust and cooperation with the medical team, and to improve hospice-palliative care referral and utilization rates.


Subject(s)
Hospice Care/organization & administration , Palliative Care/organization & administration , Humans , National Health Programs , Organizational Case Studies , Taiwan
20.
ACS Nano ; 5(5): 4118-22, 2011 May 24.
Article in English | MEDLINE | ID: mdl-21466204

ABSTRACT

In this study, advanced control of crystallographic orientations and magnetic properties of self-assembled nanostructures via rational selections of substrates is demonstrated. We show that in the perovskite-spinel BiFeO(3)-CoFe(2)O(4) model system the crystal orientation of self-assembled CoFe(2)O(4) nanopillars can be tuned among (001), (011), and (111), while that of the BiFeO(3) matrix is fixed in (001). Moreover, the resultant CoFe(2)O(4) nanopillars appear in various shapes: pyramid, roof, and triangular platform, respectively. The tunable nanostructures through this approach enable the control of material functionality such as the magnetic anisotropy of CoFe(2)O(4). This study opens a new pathway for the engineering of self-assembled heteroepitaxial nanostructures.


Subject(s)
Calcium Compounds/chemistry , Crystallization/methods , Nanostructures/chemistry , Nanostructures/ultrastructure , Oxides/chemistry , Titanium/chemistry , Macromolecular Substances/chemistry , Materials Testing , Molecular Conformation , Particle Size , Surface Properties
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