Search

Gout is a chronic disease. Gout symptoms are often experienced in the middle of the night. The onset of gout in the middle of the night is closely related to abnormal liver and gallbladder meridian. The purpose of this study was to investigate the clinical efficacy and possible mechanism of action of Tongbixiao pills in the treatment of hyperuricemia and gouty arthritis. The Tongbixiao pills we used included several traditional Chinese medicines, most of which tonify the spleen; strengthen the liver; benefit the kidney; and reduce heat, dampness, and blood stasis. In this randomized clinical study of 105 patients, we found that Tongbixiao pills can reduce uric acid levels in hyperuricemia patients. Additionally, the efficacy was similar to that of allopurinol and the level of uric acid did not increase significantly at eight weeks after withdrawal. In the absence of notable adverse reactions, Tongbixiao pills can also increase uric acid excretion, reduce serum creatinine and lipid levels, and reduce inflammation and relieve gout symptoms. In addition, we used SD rats to simulate gout and arthritis and divided them into five groups: normal group, model group, low-dose group, medium-dose group, and high-dose group. The inflammatory indices of the 40 SD rats were observed. After seven days, ankle swelling in rats in the treatment group was significantly reduced. The indices of uric acid, creatinine, and urea nitrogen in the treatment group were significantly lower than those in the model group, which proved that Tongbixiao pills could inhibit hyperuricemia in rats, thus treating gout. This study demonstrates that Tongbixiao pills can treat gout, provide more treatment options for gouty arthritis, and improve the quality of life of patients. [ABSTRACT FROM AUTHOR]

Background: Mast‐cell activation syndrome (MCAS) is increasingly recognized. Sinonasal obstruction is common among these patients. There is a paucity of literature describing the characteristics of MCAS and treatment outcomes. Methods: Retrospective review of 192 patients with nasal congestion July 2017 to May 2019 among 3 providers (1 allergist, 2 rhinologists) was conducted. Suspected MCAS criteria were as follows: (1) at least 2 recurrent severe symptoms in addition to nasal congestion: flushing, pruritus, urticaria, angioedema, wheezing, throat swelling, headache, hypotension, diarrhea; (2) clinical response to medications that target mast cell mediators. Quality of life (QOL) outcomes were quantified using the 22‐item Sino‐Nasal Outcome Test (SNOT‐22). Results: Thirty‐two patients with nasal congestion were suspected of MCAS. The median age was 47 years; 24 of 32 were female; 13 of 32 had prior history of sinonasal surgery and 11 of 32 allergen immunotherapy. Out of 32, 19 had history of asthma, 10 drug allergy, 11 food allergy, and 10 anaphylaxis. The median number of medications targeting mast cell activation was 4 (range, 2‐7). Eleven patients were offered surgery by a rhinologist after adequate medical management. Three of 32 patients showed elevation of serum tryptase. Fourteen completed pretreatment and posttreatment SNOT‐22 (4/14 surgery, 10/14 medical management). Pretreatment score was 59.8 ± 6.2 (mean ± standard error [SEM]) and posttreatment score was 42.8 ± 6.7; the difference was statistically and clinically significant (p = 0.0015). Both groups showed a mean 17‐point reduction. Conclusion: A multidisciplinary approach to the treatment of sinonasal symptoms using both escalation of medical therapy and surgical approaches may improve QOL of patients with suspected MCAS. Consensus criteria for MCAS, which includes elevation in tryptase over baseline during an episode, may exclude the full spectrum of individuals with MCAS from potentially beneficial treatment. [ABSTRACT FROM AUTHOR]

Introduction: A culturally adaptive and easy‐to‐administer 12‐item Caregiving Rewarding Feelings (CRF) scale has been developed in China yet never published in English and validated in another population. Aim: The current study aimed to validate the CRF among a community sample of Chinese caregivers of those diagnosed with schizophrenia. Method: A sample of 449 family caregivers was recruited for scale validation that included factorial validity, construct validity, measurement invariance, item analysis, internal consistency reliability, test–retest reliability, known‐group validity, convergent validity and divergent validity. Results: Confirmatory factor analysis supported the a priori three‐factor structure. Construct validity was supported by high standard regression weight (SRW) and average variance extracted (AVE), measurement invariance across age and gender groups. The CRF showed good internal consistency and test–retest reliability. Known‐group validity was confirmed by the higher CRF scores among caregivers with certain socio‐demographics. The convergent validity of the CRF was supported by its positive correlations with social support, active coping and family functioning. The divergent validity of the CRF was supported by its negative associations with stigma, stress and depressive symptoms. Conclusions: This study confirmed the reliability and validity of the CRF specifically designed for caregivers in Chinese culture. Implications for Practice: The CRF may be further applied and validated in other populations and other countries. [ABSTRACT FROM AUTHOR]

Epidemiological studies demonstrate a relationship between statin [3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor] usage and reduced risk of developing Alzheimer's disease. To determine whether statins affect neuronal development, we treated cultured rat hippocampal neurons with pravastatin. After 4–48 h of treatment, pravastatin significantly increased the number of neurites produced by each cell and caused a corresponding increase in levels of the membrane phospholipid phosphatidylcholine. Pravastatin treatment also significantly increased neurite length and branching but did not affect cellular cholesterol levels. Co-incubation with mevalonate, but not cholesterol, abolished the stimulatory effect of pravastatin on neurite outgrowth. Treatment of neurons with isoprenoids also abolished the effect of pravastatin on neurite growth, suggesting that pravastatin may stimulate neuritogenesis by preventing isoprenylation of signaling molecules such as the Rho family of small GTPases. A specific inhibitor of geranylgeranylation, but not farnesylation, mimicked the stimulatory effect of pravastatin on neuritogenesis. Pravastatin treatment significantly decreased levels of membrane-associated RhoA. These data suggest that pravastatin treatment increases neurite outgrowth and may do so via inhibiting the activity of geranylgeranylated proteins such as RhoA. [ABSTRACT FROM AUTHOR]

Introduction: The Multidimensional Scale of Perceived Social Support (MSPSS) is one of the most widely used scales for social support. Although previous studies have shown good reliability and concurrent validity, conflicting evidence exists on its factor structures. Aim: To validate the MSPSS among caregivers of people with schizophrenia in China and assess its factor structure. Methods: A cross-sectional study was conducted of 449 family caregivers in 12 communities for psychometric testing, eg, internal consistency reliability, test–retest reliability, construct validity, exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). Results: The MSPSS showed good internal consistency with a Cronbach's alpha of 0.95, good test–retest reliability with intraclass correlation coefficient (ICC) of 0.91, and kappa ranging from 0.62 to 0.71. Concurrent validity was supported by its negative correlations with perceived stress, and significant positive correlations with caregiving rewarding feelings, family functioning, and coping. EFA yielded a two-factor structure (family vs non-family), while CFA generally supported a three-factor structure (family, friends, and significant others). Conclusion: Our findings show good psychometric properties of the MSPSS among caregivers of people with schizophrenia in China. EFA yields two-factor structure and CFA yields three factors consistent with the theory underlying the measure's development. [ABSTRACT FROM AUTHOR]

A correction to the article "The 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitor pravastatin enhances neurite outgrowth in hippocampal neurons" published in the Number 97, 2006 issue is presented.

Patients receiving brain radiotherapy may suffer acute or chronic side effects. Ionizing radiation induces the production of intracellular reactive oxygen species and pro-inflammatory cytokines in the central nervous system, leading to brain damage. Complementary Chinese herbal medicine therapy may reduce radiotherapy-induced side effects. Flavonoids are a class of natural products which can be extracted from Chinese herbal medicine and have been shown to have neuroprotective and radioprotective properties. Flavonoids are effective antioxidants and can also inhibit regulatory enzymes or transcription factors important for controlling inflammatory mediators, affect oxidative stress through interaction with DNA and enhance genomic stability. In this paper, radiation-induced brain damage and the relevant molecular mechanism were summarized. The radio-neuro-protective effect of flavonoids, i.e., antioxidant, anti-inflammatory and maintaining genomic stability, were then reviewed. We concluded that flavonoids treatment may be a promising complementary therapy to prevent radiotherapy-induced brain pathophysiological changes and cognitive impairment. [ABSTRACT FROM AUTHOR]

Abstract The pore structure and fractal characteristics of the Lower Cambrian Niutitang formation shale in northern Guizhou were investigated by scanning electron microscope (SEM), X-ray diffraction (XRD) observations and nuclear magnetic resonance (NMR). The relationships between mineral compositions, total organic carbon (TOC), porosity, permeability and NMR fractal dimensions of shale samples were discussed, and the properties of organic pores and organic matter were quantitatively analyzed by pore extraction based on SEM images. The shale pore distribution is irregular and complex, with multifractal and anisotropic characteristics. Fractal characteristics of shale samples were studied by NMR and apply to analyze the lithology and physical properties. D b and D m represent fractal characteristics of bound fluid and movable fluid pore respectively. The quartz content is the negative correlation with D b and positive correlation with D m. The clay content is the negative correlation with D b and positive correlation with D m , and the feldspar content is the positive correlation with D b and negative correlation with D m , whereas TOC content has no correlation with D b but is the negative correlation with D m. The relationship between feldspar content and fractal dimension depends on the chemical reaction process in the diagenetic stage. D b has no obvious relationship with porosity and permeability, and D m has negative correlation with porosity and positive correlation with permeability. The fractal dimension D b represents the roughness and complexity of adsorption pores surface. The fractal dimensions D m represents the roughness and complexity of seepage pores surface. The fractal analysis provides a novel idea for the study of shale reservoir properties and lithology. Graphical abstract Fractal analysis of pores and investigation of the pore structure in shale reservoirs using NMR and image analyses: A case study from the Lower Cambrian Niutitang Formation in northern Guizhou Province, Southwest China, Wenjibin Sun, Yujun Zuo, Zhonghu Wu et al. Image 1 Highlights • Pore structure of shale samples was studied from fractal perspective. • Organic pores and organic matter were quantitatively analyzed by using pore extraction. • The relationship between shale physical properties and fractal dimensions was studied. • The relationship between fractal dimensions and feldspar related to diagenesis was analyzed. [ABSTRACT FROM AUTHOR]

The Lower Cambrian Niutitang Formation is one of the most important shale reservoirs in the Northern Guizhou. To study the characteristics of pore structures and the relationships between shale's physical properties and pore structures in the complex tectonic area, from the perspective of hydrocarbon generation and evolution, the mineral composition, pore structure characteristics of shale samples in northern Guizhou were analyzed using X-ray diffraction (XRD), optical microscopic composition analysis, focused ion beam-scanning electron microscopy (FIB-SEM), vitrinite reflectivity and nitrogen adsorption experiments. Results indicate that the pore structures can be categorized into conical, ink bottle, spherical, elliptical, beaded, irregular, and plate-like intersecting microfractures. Shale samples are organic-rich with an average total organic carbon content of 4.39%. Organic matter is consumed within the shale matrix during the hydrocarbon generation and evolution, which increases the organic pore size and the proportion of organic pores. The high TOC content is conducive to developing organic pores. In addition, the average content of brittle minerals is greater than 70%. High content of brittle minerals during diagenesis is conducive to developing the residual pores at the edges of mineral particles and dissolved pores within mineral particles. Thus, the high content of brittle minerals and TOC content is favorable for the development of meso-macropores. The content of clay minerals within the shale samples ranges from 6.3% to 42.2%, with an average of 20.02%. Micropores and mesopores mainly occur in the clay minerals. Pores in clay minerals are easily compacted under tectonic stress. Meanwhile, high thermal evolution degree and the vitrinite reflectance R o greater than 3.5 is not conducive to developing pores. Hence, high TOC content, high brittle minerals content, and thermal evolution degree ranging from 0.6% to 3% make the Lower Cambrian Niutitang Formation shale reservoirs favorable for shale gas exploration. • The pore structures in the complex tectonic area were studied. • The pore formation process and its evolution were discussed. • The reservoir physical properties of favorable shale reservoirs were summarized. [ABSTRACT FROM AUTHOR]