Prevalence and associating variables with fear of progression in Chinese pediatric cancer patients: A cross-sectional study.

Fear of progression (FoP) is a prevalent psychological strain for cancer patients associated with poor quality of life and psychological morbidity. However, little evidence exists on FoP in children with cancer. Our study aimed to determine prevalence and correlates of FoP of cancer in children. From December 2018 to March 2019, cancer patients from Children's Hospital in Chongqing, Southwest China, were recruited. A Chinese version of Fear of Progression Questionnaire-Short Form (FoP-Q-SF) was adopted to assess children' FoP. Descriptive statistics (percentages, median, and interquartile range), non-parametric tests, and multiple regression analyses were performed on these data. Prevalence of high-level FoP was 43.75% among these 102 children. Multiple regression analysis showed that reproductive system tumors (beta = 0.315, t = 3.235 95% CI [3.171, 13.334]), and level of psychological care needs (beta = -0.370, t = -3.793 95% CI [-5.396, -1.680]) were independent predictors of FoP. Regression model explained 27.10% of all included variables (adjusted R square = 27.10%). As with adults with cancer, children with cancer also have FoP. More attention should be paid to FoP in children with reproductive tumors and in children who need psychological support. More access to psychological support should be offered to reduce FoP and to improve their quality of life.

Physical and Psychosocial Responses to COVID-19 in Chinese Frontline Nurses: A Cross-Sectional Study.

Using Gordon's Functional Health Pattern Model, the current cross-sectional study aimed to survey physical and psychosocial responses to the coronavirus disease 2019 (COVID-19) pandemic among Chinese frontline nurses and to identify the most vulnerable groups for future reference and interventions. A self-administered online questionnaire was used to collect demographic data and stress reactions of 115 Chinese frontline nurses. The 52-item version of Gordon's Functional Health Questionnaire was used to evaluate physical, psychological, and social effects of the COVID-19 pandemic among participants. The most prevalent problems were reported in the psychological aspect, where respondents referred to altered self-image due to constant use of masks (87.8%), excessive attention to clinical signs of COVID-19 (59.2%), depression (54%), forgetfulness (40.9%), and anxiety (39.1%). The most vulnerable nurses were those who were younger, had a chronic disease, and were divorced. [Journal of Psychosocial Nursing and Mental Health Services, 59(9), 30-37.].

Complementary and Alternative (CAM) Treatment Options for Women with Pelvic pain.

PURPOSE OF REVIEW: I.To provide an overview of the current complementary and alternative (CAM) treatment options for women with chronic pelvic pain (CPP). RECENT FINDINGS: II.Recent studies on chronic pain at cellular, molecular and network level and their interaction with the immune system has unfolded several mechanisms for pain making it promising to explore the alternative paradigm to manage the incredibly complex chronic pelvic pain condition where multifactorial etiology often limits successful outcomes. SUMMARY: III.The multifactorial nature and complexity in establishing the underlying diagnosis in CPP limits predictable response to traditional medical and interventional options. Complementary and alternative options have been studied to improve outcomes. Incorporation of exercise-based CAM, pelvic floor physical therapy, acupuncture and cognitive behavioral therapy are suggested to show promising results but well powered randomized studies are needed to draw conclusions on their efficacy. Evidence for non-opioid alternatives such as oral cannabinoids are preliminary and may emerge to be safe and effective.

Interventional treatment options for women with pelvic pain.

PURPOSE OF REVIEW: I.To provide an overview of current interventional treatment options for women with chronic pelvic pain (CPP). RECENT FINDINGS: II.Accessibility of CT imaging, ultrasound, and fluoroscopy have assisted the development of novel interventional techniques. Similarly, neuromodulation techniques have improved with the development of novel stimulation patterns and device implants. SUMMARY: III.Numerous small-scale studies report high success rates with injection intervention therapies in CPP but there are limited well designed large-scale studies that demonstrate superiority of treatment. Female pelvic pain is difficult to diagnose due to the multifactorial etiology and the variable presentation causing delay in accurate diagnosis and lack of response to conventional medical and initial interventional therapies. Despite the shortfalls of current studies, collectively our understanding of chronic pain conditions and helpful injection interventions are improving. Undoubtedly the breadth of current research will provide a rich foundation for future large-scale well-designed studies involving multiple disciplines with more uniform methods and criteria to produce reliable and reproducible results.

Effects of cognitive behavioral therapy on psychological adjustment in Chinese pediatric cancer patients receiving chemotherapy: A randomized trial.

BACKGROUND: Cognitive behavioral therapy (CBT) has been widely used in pediatric cancer patients to promote psychological adjustment (PA). Considering the diversity of region and culture in China, its effect in Chinese population is not well defined. Therefore, our study is to explore the effect of CBT on improving PA in Chinese pediatric cancer patients receiving chemotherapy. METHODS: One hundred four Chinese pediatric cancer patients receiving chemotherapy were divided into CBT group and control group randomly and equally. The resilience and negative mood were applied to evaluate the ability of psychological adjustment (PA). The Conner-Davidson Resilience Scale (CD-RISC) and depression anxiety stress scale (DASS) were employed to measure resilience and negative mood before and after intervention. The SPSS 22.0 software was used to analyze data. RESULTS: Prior to the intervention, the ability of psychological adjustment between 2 groups showed no significant difference (P > .05 for all). After intervention, the total CD-RISC score was significantly higher (56.09 ± 7.29 vs 44.75 ± 5.40), whereas the scores of depression (4.57 ± 2.94 vs 7.25 ±â€Š4.25), anxiety (5.83 ±â€Š3.07 vs 8.66 ±â€Š4.92), stress (7.51 ±â€Š4.33 vs 11.17 ±â€Š4.25) were obviously lower in CBT group than those in the control group (P < .05 for all). Moreover, the decline of negative mood score in Yolk sac tumor children was the most evident in CBT group. While the resilience changes of cancer children in stage III was most obvious. CONCLUSIONS: CBT can effectively help Chinese pediatric cancer patients modify distorted cognition to have a positive attitude towards cancer and chemotherapy. This treatment enhances resilience and relieves negative mood, which results in good psychological adjustment ability, especially in Yolk sac tumor and stage III. It has a beneficial effect on better treatment cooperation and high long-term quality of life.

Decadal Assessment of Polycyclic Aromatic Hydrocarbons in Mesopelagic Fishes from the Gulf of Mexico Reveals Exposure to Oil-Derived Sources.

This study characterizes a decadal assessment of polycyclic aromatic hydrocarbons (PAHs) in the muscle tissues of mesopelagic fish species as indicators of the environmental health of the Gulf of Mexico (GoM) deep-pelagic ecosystem. Mesopelagic fishes were collected prior to the Deepwater Horizon (DWH) oil spill (2007), immediately post-spill (2010), 1 year after the spill (2011), and 5-6 years post-spill (2015-2016) to assess if the mesopelagic ecosystem was exposed to, and retained, PAH compounds from the DWH spill. Results indicated that a 7- to 10-fold increase in PAHs in fish muscle tissues occurred in 2010-2011 (4972 ± 1477 ng/g) compared to 2007 (630 ± 236 ng/g). In 2015-2016, PAH concentrations decreased close to the levels measured in 2007 samples (827 ± 138 ng/g); however, the composition of PAHs still resembles a petrogenic source similar to samples collected in 2010-2011. PAH composition in muscle samples indicated that natural sources (e.g., Mississippi River and natural seeps) or spatial variability within the GoM do not explain the temporal variability of PAHs observed from 2007 to 2016. Furthermore, analysis of different fish tissues indicated the dietary intake and maternal transfer of PAHs as the primary mechanisms for bioaccumulation in 2015-2016, explaining the elevated levels and composition of PAHs in ovarian eggs.

An unusual finding in a desmoid-type fibromatosis of the pancreas: a case report and review of the literature.

BACKGROUND: Desmoid-type fibromatoses are rare benign and fibrous tumors that account for approximately 0.03% of total neoplasms. Within this category of neoplasms, pancreatic desmoid-type fibromatosis is an extremely rare subgroup, accounting for approximately 5% of desmoid-type fibromatoses. Although the etiology is unknown, some risk factors include trauma, surgery, family history of desmoid tumor, pregnancy, use of contraceptives, genetic mutation, and familial adenomatous polyposis or Gardner syndrome. Desmoid-type tumors are primarily diagnosed by pathological and immunohistochemical studies. The treatment of choice is surgical resection of the tumor. Systemic chemotherapy and radiotherapy are optional treatment approaches for patients with high risk for surgery. The following is a report of an unusual case of a pancreatic desmoid-type fibromatosis in which a very rare variation in the immunohistochemistry findings was demonstrated: slides were immunopositive for S100 protein and not immunonegative. Most desmoid tumors are immunonegative for S100 protein with just a few cases being positive for this protein. CASE PRESENTATION: We describe the case of a 15-year-old boy, a Chinese national, who was diagnosed as having a pancreatic desmoid-type fibromatosis. He was a healthy individual who was incidentally diagnosed with an abdominal mass. His chief complaints were mild generalized abdominal pain for 1 week, nausea, vomiting, and a low-grade fever. An enhanced computed tomography scan of his abdomen showed a large cystic mass in the anterior surface of the body of his pancreas. He underwent a radical resection of the pancreatic mass, partial pancreatectomy, splenectomy, segmental resection of transverse colon and distal jejunum, and subsequently a one-stage jejunojejunostomy and colonic anastomosis. Postoperatively, he was diagnosed as having a desmoid-type fibromatosis of the pancreas by pathological and immunohistochemical studies. CONCLUSIONS: The diagnosis of desmoid-type fibromatosis is usually incidental and challenging. Pathological and immunohistochemical testing are essential for confirming diagnosis where demonstration of ß-catenin nuclear staining is probably the single most important characteristic. Other markers, such as vimentin, are usually positive, while S100 protein is usually negative. Our case however, confirms that there are rare cases that can be S100 positive. This is the first diagnosed case of pancreatic desmoid-type fibromatosis with S100 protein positivity.

Physiological performance of warm-adapted marine ectotherms: Thermal limits of mitochondrial energy transduction efficiency.

Thermal regimes in aquatic systems have profound implications for the physiology of ectotherms. In particular, the effect of elevated temperatures on mitochondrial energy transduction in tropical and subtropical teleosts may have profound consequences on organismal performance and population viability. Upper and lower whole-organism critical temperatures for teleosts suggest that subtropical and tropical species are not susceptible to the warming trends associated with climate change, but sub-lethal effects on energy transduction efficiency and population dynamics remain unclear. The goal of the present study was to compare the thermal sensitivity of processes associated with mitochondrial energy transduction in liver mitochondria from the striped mojarra (Eugerres plumieri), the whitemouth croaker (Micropogonias furnieri) and the palometa (Trachinotus goodei), to those of the subtropical pinfish (Lagodon rhomboides) and the blue runner (Caranx crysos). Mitochondrial function was assayed at temperatures ranging from 10 to 40°C and results obtained for both tropical and subtropical species showed a reduction in the energy transduction efficiency of the oxidative phosphorylation (OXPHOS) system in most species studied at temperatures below whole-organism critical temperature thresholds. Our results show a loss of coupling between O2 consumption and ATP production before the onset of the critical thermal maxima, indicating that elevated temperature may severely impact the yield of ATP production per carbon unit oxidized. As warming trends are projected for tropical regions, increasing water temperatures in tropical estuaries and coral reefs could impact long-term growth and reproductive performance in tropical organisms, which are already close to their upper thermal limit.

Matching Solid-State to Solution-Phase Photoluminescence for Near-Unity Down-Conversion Efficiency Using Giant Quantum Dots.

Efficient, stable, and narrowband red-emitting fluorophores are needed as down-conversion materials for next-generation solid-state lighting that is both efficient and of high color quality. Semiconductor quantum dots (QDs) are nearly ideal color-shifting phosphors, but solution-phase efficiencies have not traditionally extended to the solid-state, with losses from both intrinsic and environmental effects. Here, we assess the impacts of temperature and flux on QD phosphor performance. By controlling QD core/shell structure, we realize near-unity down-conversion efficiency and enhanced operational stability. Furthermore, we show that a simple modification of the phosphor-coated light-emitting diode device-incorporation of a thin spacer layer-can afford reduced thermal or photon-flux quenching at high driving currents (>200 mA).

δ(13)C and δ(15)N in deep-living fishes and shrimps after the Deepwater Horizon oil spill, Gulf of Mexico.

The blowout of the Deepwater Horizon (DWH) drill-rig produced a surface oil layer, dispersed micro-droplets throughout the water column, and sub-surface plumes. We measured stable carbon and nitrogen isotopes in mesopelagic fishes and shrimps in the vicinity of DWH collected prior to, six weeks after, and one year after the oil spill (2007, 2010 and 2011). In 2010, the year of the oil spill, a small but significant depletion of δ(13)C was found in two mesopelagic fishes (Gonostoma elongatum and Chauliodus sloani) and one shrimp (Systellaspis debilis); a significant δ(15)N enrichment was identified in the same shrimp and in three fish species (G. elongatum, Ceratoscopelus warmingii, and Lepidophanes guentheri). The δ(15)N change did not suggest a change of trophic level, but did indicate a change in diet. The data suggest that carbon from the Deepwater Horizon oil spill was incorporated into the mesopelagic food web of the Gulf of Mexico.

Aerobic and anaerobic metabolism in oxygen minimum layer fishes: the role of alcohol dehydrogenase.

Zones of minimum oxygen form at intermediate depth in all the world's oceans as a result of global circulation patterns that keep the water at oceanic mid-depths out of contact with the atmosphere for hundreds of years. In areas where primary production is very high, the microbial oxidation of sinking organic matter results in very low oxygen concentrations at mid-depths. Such is the case with the Arabian Sea, with O(2) concentrations reaching zero at 200 m and remaining very low (<0.1 ml O(2)l(-1)) for hundreds of meters below this depth, and in the California borderland, where oxygen levels reach 0.2 ml O(2)l(-1) at 700 m with severely hypoxic (<1.0 ml O(2)l(-1)) waters at depths 300 m above and below that. Despite the very low oxygen, mesopelagic fishes (primarily lanternfishes: Mytophidae) inhabiting the Arabian Sea and California borderland perform a daily vertical migration into the low-oxygen layer, spending daylight hours in the oxygen minimum zone and migrating upward into normoxic waters at night. To find out how fishes were able to survive their daily sojourns into the minimum zone, we tested the activity of four enzymes, one (lactate dehydrogenase, LDH) that served as a proxy for anaerobic glycolysis with a conventional lactate endpoint, a second (citrate synthase, CS) that is indicative of aerobic metabolism, a third (malate dehydrogenase) that functions in the Krebs' cycle and as a bridge linking mitochondrion and cytosol, and a fourth (alcohol dehydrogenase, ADH) that catalyzes the final reaction in a pathway where pyruvate is reduced to ethanol. Ethanol is a metabolic product easily excreted by fish, preventing lactate accumulation. The ADH pathway is rarely very active in vertebrate muscle; activity has previously been seen only in goldfish and other cyprinids capable of prolonged anaerobiosis. Activity of the enzyme suite in Arabian Sea and California fishes was compared with that of ecological analogs in the same family and with the same lifestyle but living in systems with much higher oxygen concentrations: the Gulf of Mexico and the Southern Ocean. ADH activities in the Arabian Sea fishes were similar to those of goldfish, far higher than those of confamilials from the less severe minimum in the Gulf of Mexico, suggesting that the Arabian Sea fishes are capable of exploiting the novel ethanol endpoint to become competent anaerobes. In turn, the fishes of California exhibited a higher ADH activity than their Antarctic relatives. It was concluded that ADH activity is more widespread in fishes than previously believed and that it may play a role in allowing vertically migrating fishes to exploit the safe haven afforded by severe oxygen minima.

Increased feeding and nutrient excretion of adult Antarctic krill, Euphausia superba, exposed to enhanced carbon dioxide (CO2).

Ocean acidification has a wide-ranging potential for impacting the physiology and metabolism of zooplankton. Sufficiently elevated CO(2) concentrations can alter internal acid-base balance, compromising homeostatic regulation and disrupting internal systems ranging from oxygen transport to ion balance. We assessed feeding and nutrient excretion rates in natural populations of the keystone species Euphausia superba (Antarctic krill) by conducting a CO(2) perturbation experiment at ambient and elevated atmospheric CO(2) levels in January 2011 along the West Antarctic Peninsula (WAP). Under elevated CO(2) conditions (∼672 ppm), ingestion rates of krill averaged 78 µg C individual(-1) d(-1) and were 3.5 times higher than krill ingestion rates at ambient, present day CO(2) concentrations. Additionally, rates of ammonium, phosphate, and dissolved organic carbon (DOC) excretion by krill were 1.5, 1.5, and 3.0 times higher, respectively, in the high CO(2) treatment than at ambient CO(2) concentrations. Excretion of urea, however, was ∼17% lower in the high CO(2) treatment, suggesting differences in catabolic processes of krill between treatments. Activities of key metabolic enzymes, malate dehydrogenase (MDH) and lactate dehydrogenase (LDH), were consistently higher in the high CO(2) treatment. The observed shifts in metabolism are consistent with increased physiological costs associated with regulating internal acid-base equilibria. This represents an additional stress that may hamper growth and reproduction, which would negatively impact an already declining krill population along the WAP.

Folate receptor targeting silica nanoparticle probe for two-photon fluorescence bioimaging.

Narrow dispersity organically modified silica nanoparticles (SiNPs), diameter ~30 nm, entrapping a hydrophobic two-photon absorbing fluorenyl dye, were synthesized by hydrolysis of triethoxyvinylsilane and (3-aminopropyl)triethoxysilane in the nonpolar core of Aerosol-OT micelles. The surface of the SiNPs were functionalized with folic acid, to specifically deliver the probe to folate receptor (FR) over-expressing Hela cells, making these folate two-photon dye-doped SiNPs potential candidates as probes for two-photon fluorescence microscopy (2PFM) bioimaging. In vitro studies using FR over-expressing Hela cells and low FR expressing MG63 cells demonstrated specific cellular uptake of the functionalized nanoparticles. One-photon fluorescence microscopy (1PFM) imaging, 2PFM imaging, and two-photon fluorescence lifetime microscopy (2P-FLIM) imaging of Hela cells incubated with folate-modified two-photon dye-doped SiNPs were demonstrated.

Sublethal stress: Impact of solar UV radiation on protein synthesis in the copepod Acartia tonsa.

Aquatic organisms respond to environmental challenges such as thermal stress with the rapid induction of highly conserved polypeptides known as stress proteins or heat shock proteins (Hsps). Solar ultraviolet radiation (UVR, 280-400 nm) is an important environmental stressor in marine ecosystems. Here, we present results of experiments conducted with the marine copepod Acartia tonsa to follow the de novo protein synthesis and measure the level of constitutive and inducible isoforms of the Hsp70 gene family of stress proteins after UV exposure. Animals were collected from Tampa Bay, Florida (USA), and exposed to solar radiation (full spectrum), UV-A (320-400 nm) and PAR (400-700 nm), or PAR only, for periods of 0.5-4 h. Controls were kept in the dark. Protein synthesis was robust under all treatments when the copepods were exposed to low solar radiation intensities. Conversely, high solar radiation intensities (both UV-B and UV-A) caused an overall suppression in the protein synthesis of the copepods with no detectable induction of stress-inducible isoforms of Hsps. Immunochemical assays (western blotting) showed that UVR increased levels (3.5-4-fold increase compared to the dark control) of the constitutively expressed 70 kDa heat-shock (Hsc70) protein in A. tonsa, without indication of inducible isoform upregulation.

High latitude changes in ice dynamics and their impact on polar marine ecosystems.

Polar regions have experienced significant warming in recent decades. Warming has been most pronounced across the Arctic Ocean Basin and along the Antarctic Peninsula, with significant decreases in the extent and seasonal duration of sea ice. Rapid retreat of glaciers and disintegration of ice sheets have also been documented. The rate of warming is increasing and is predicted to continue well into the current century, with continued impacts on ice dynamics. Climate-mediated changes in ice dynamics are a concern as ice serves as primary habitat for marine organisms central to the food webs of these regions. Changes in the timing and extent of sea ice impose temporal asynchronies and spatial separations between energy requirements and food availability for many higher trophic levels. These mismatches lead to decreased reproductive success, lower abundances, and changes in distribution. In addition to these direct impacts of ice loss, climate-induced changes also facilitate indirect effects through changes in hydrography, which include introduction of species from lower latitudes and altered assemblages of primary producers. Here, we review recent changes and trends in ice dynamics and the responses of marine ecosystems. Specifically, we provide examples of ice-dependent organisms and associated species from the Arctic and Antarctic to illustrate the impacts of the temporal and spatial changes in ice dynamics.

A stereological analysis of developing egg chambers in Ephestia kuhniella.

A polytrophic ovariole of the flour moth, Ephestia kuhniella, is composed of a linear series of increasingly mature egg chambers, each consisting of an oocyte, an interconnected cluster of seven nurse cells, and a covering layer of follicle cells. This study describes changes in the volume of each component as a function of the position of the egg chamber in the ovariole. Analysis of the growth curve of the Ephestia oocyte yields two possible correlations between accelerated oocyte growth and ultrastructural events enhancing the supply of yolk materials to the oocyte: the first is the initiation of yolk synthesis by the follicle cell layer and its transfer to the oocyte, and the second is the formation of channels between the follicle cells allowing hemolymph to gain access to the oocyte. An Ephestia oocyte increases in volume from approximately 2.5 × 103 µm3 to approximately 2.0 × 107 µm3 over an average series of 58 egg chambers.