283 research outputs found
Effects of Multivitamin-Mineral Supplementation on Mental Health among Young Adults
The percentage of young adults who had mental illnesses has increased from 2008 to 2015. However, few existing studies investigating the potential benefits of multivitamin-mineral (MVM) supplementation on mental health focused on young adults (18-24 years of age), whose eating behaviors are often unhealthy. The purpose of this study was to examine the effects of a MVM supplement on mental health in young adults. One hundred and thirty-three college students (Mage=20.59, SD=1.77; 80.15% female) participated in this randomized, double-blind, placebo-controlled trial. Participants consumed either a MVM supplement or a placebo for 30 days. The supplement contained B Vitamins, Vitamin C, calcium, magnesium, and zinc. Beck Anxiety Inventory (BAI), Center for Epidemiologic Studies Depression Scale (CES-D), Abbreviated Dysregulation Inventory (ADI) and a single item for self-esteem (SISE) were used to assess participants’ symptoms of anxiety, depression, impulsivity/dysregulation, and self-esteem level at baseline and on day 30. ADI explored three aspects of dysregulation (behavioral, cognitive, and affective). Participants’ height and weight were recorded using standardized protocols by trained staff. Data were analyzed using repeated measures ANCOVA. There was a difference in adjusted mean score changes in depression within MVM supplementation or within placebo-controlled group from baseline to Day 30 (p= 0.03). There was also a difference in adjusted mean score changes in depression in MVM supplementation group compared to placebo-controlled group (p= 0.02). In overweight/obese BMI group, no difference in adjusted mean scores of anxiety, depression, dysregulation, or self-esteem level was found. However, closer examination based on effect sizes revealed moderate effects of MVM supplementation within-subjects on anxiety (η2= 0.11) and behavioral dysregulation (η2= 0.03) and between-subjects on self-esteem level (η2= 0.03); within-subjects on anxiety (η2= 0.07), depression (η2= 0.07), and cognitive dysregulation (η2= 0.07) and between-subjects on depression (η2= 0.07) and self-esteem level (η2= 0.04) in overweight/obese BMI group. The 30-day MVM supplementation may have beneficial effects on young adults’ symptoms of depression. Although outcomes presented no significant difference between pre-intervention and post-intervention scores, some of them indicated relatively moderate effect sizes, and future work should replicate with larger samples
Mechanisms for gut microbiome dysbiosis following stroke
"Over 795,000 people in the US suffer a stroke every year. Survivors are often left with severe cognitive, functional, and emotional impairments. Gut dysbiosis and increased gut permeability have been shown to occur following stroke, leading to a systemic flood of neuro- and immuno-modulatory substances. Evidence from animal model studies suggests that gut microbes modulate the bidirectional gut brain axis. It is unknown how post-stroke dysbiosis correlates with gut permeability."--Introduction
Gut microbiome dysbiosis in at-risk versus low-risk stroke adults
"Healthy brain aging has been a significant focus in older adults. Lifestyle changes such as diet and exercise have been implemented by adults to avoid brain related disease processes such stroke and Alzheimer’s disease. Stroke risk factors such as high BMI, hypertension, diabetes, and the presence of ApoE4 gene have been explored in hopes to find interventions targeted to promote more healthy brain aging. Currently there is a knowledge gap on how interventions can promote healthy brain aging. Targeting the bidirectional gut-brain axis by manipulating the gut microbiome can be a possible intervention to promote brain health."--Introduction
TABLE OF CASES
<p>Main effects: trial: p<.001; time: p<.001; interaction: p<.001. **p<.01; ***p<0.01.</p
Anticancer Effects of Salvia miltiorrhiza
Researchers have reported significant effects from Danshen (Salvia miltiorrhiza) in terms of inhibiting tumor cell proliferation and promoting apoptosis in breast cancer, hepatocellular carcinomas, promyelocytic leukemia, and clear cell ovary carcinomas. Here we report our data indicating that Danshen extracts, especially alcohol extract, significantly inhibited the proliferation of the human oral squamous carcinoma (OSCC) cell lines HSC-3 and OC-2. We also observed that Danshen alcohol extract activated the caspase-3 apoptosis executor by impeding members of the inhibitor of apoptosis (IAP) family, but not by regulating the Bcl-2-triggered mitochondrial pathway in OSCC cells. Our data also indicate that the extract exerted promising effects in vivo, with HSC-3 tumor xenograft growth being suppressed by 40% and 69% following treatment with Danshen alcohol extract at 50 and 100 mg/kg, respectively, for 34 days. Combined, our results indicate appreciable anticancer activity and significant potential for Danshen alcohol extract as a natural antioxidant and herbal human oral cancer chemopreventive drug
Extract from Periostracum cicadae
Periostracum cicadae is widely used for the treatment of skin diseases such as eczema, pruritus, and itching. The current study sought to evaluate the effect of P. cicadae extract on ultraviolet B (UVB) irradiation and identify the mechanisms involved. Photodamage-protective activity of P. cicadae extracts against oxidative challenge was screened using HaCaT keratinocytes. P. cicadae extracts did not affect cell viability but decreased reactive oxygen species (ROS) production. The extract attenuates the expression of interleukin-6 (IL-6), matrix metalloproteinase-2 (MMP-2), and MMP-9 in UVB-treated HaCaT cells. Also, P. cicadae abrogated UVB-induced activation of NF-κB, p53, and activator protein-1 (AP-1). The downmodulation of IL-6 by P. cicadae was inhibited by the p38 inhibitor (SB203580) or JNK inhibitor (SP600125). Moreover, the extract attenuated the expression of NF-κB and induced thrombomodulin in keratinocytes and thereby effectively downregulated inflammatory responses in the skin. The nuclear accumulation and expression of NF-E2-related factor (Nrf2) were increased by P. cicadae treatment. Furthermore, treatment with P. cicadae remarkably ameliorated the skin’s structural damage induced by irradiation. This study demonstrates that P. cicadae may protect skin cells against oxidative insult by modulating ROS concentration, IL-6, MMPs generation, antioxidant enzymes activity, and cell signaling pathways
Low-cell-number, single-tube amplification (STA) of total RNA revealed transcriptome changes from pluripotency to endothelium
Table S1. Summary of the sequencing results. The alignments against the GRCh38 genome assembly (Aligned Reads) were counted for exon reads (exon) and transcript reads based on GENCODE v22. Intronic counts (intron) were defined by transcript counts minus exon ones. Nontranscript reads were used to obtain tRNA counts (tRNA) based on the tRNA database of GENCODE v22. Nontranscript and non-tRNA reads were used for counts on repetitive sequences (repeats) based on RepeatMasker. Those not belonging to any category were defined as unannotated reads (unannotated). The counting of exonic features was based on the “gene_type” attribute in GENCODE v22. The percentages of mature miRNA reads were defined by reads aligned exclusively to the mature “miRNA” feature divided by reads aligned to the “miRNA_primary_transcript” feature of miRBase v21. (DOCX 42 kb
Revealing the Anti-Tumor Effect of Artificial miRNA p-27-5p on Human Breast Carcinoma Cell Line T-47D
microRNAs (miRNAs) cause mRNA degradation or translation suppression of their target genes. Previous studies have found direct involvement of miRNAs in cancer initiation and progression. Artificial miRNAs, designed to target single or multiple genes of interest, provide a new therapeutic strategy for cancer. This study investigates the anti-tumor effect of a novel artificial miRNA, miR P-27-5p, on breast cancer. In this study, we reveal that miR P-27-5p downregulates the differential gene expressions associated with the protein modification process and regulation of cell cycle in T-47D cells. Introduction of this novel artificial miRNA, miR P-27-5p, into breast cell lines inhibits cell proliferation and induces the first “gap” phase (G1) cell cycle arrest in cancer cell lines but does not affect normal breast cells. We further show that miR P-27-5p targets the 3′-untranslated mRNA region (3′-UTR) of cyclin-dependent kinase 4 (CDK4) and reduces both the mRNA and protein level of CDK4, which in turn, interferes with phosphorylation of the retinoblastoma protein (RB1). Overall, our data suggest that the effects of miR p-27-5p on cell proliferation and G1 cell cycle arrest are through the downregulation of CDK4 and the suppression of RB1 phosphorylation. This study opens avenues for future therapies targeting breast cancer
Corrigendum to “Anticancer Effects of Salvia miltiorrhiza
Researchers have reported significant effects from Danshen (Salvia miltiorrhiza) in terms of inhibiting tumor cell proliferation and promoting apoptosis in breast cancer, hepatocellular carcinomas, promyelocytic leukemia, and clear cell ovary carcinomas. Here we report our data indicating that Danshen extracts, especially alcohol extract, significantly inhibited the proliferation of the human oral squamous carcinoma (OSCC) cell lines HSC-3 and OC-2. We also observed that Danshen alcohol extract activated the caspase-3 apoptosis executor by impeding members of the inhibitor of apoptosis (IAP) family, but not by regulating the Bcl-2-triggered mitochondrial pathway in OSCC cells. Our data also indicate that the extract exerted promising effects in vivo, with HSC-3 tumor xenograft growth being suppressed by 40% and 69% following treatment with Danshen alcohol extract at 50 and 100 mg/kg, respectively, for 34 days. Combined, our results indicate appreciable anticancer activity and significant potential for Danshen alcohol extract as a natural antioxidant and herbal human oral cancer chemopreventive drug
Apolipoprotein E Genotype-Dependent Nutrigenetic Effects to Prebiotic Inulin for Modulating Systemic Metabolism and Neuroprotection in Mice via Gut-Brain Axis
OBJECTIVE: The goal of the study was to identify the potential nutrigenetic effects to inulin, a prebiotic fiber, in mice with different human apolipoprotein E (APOE) genetic variants. Specifically, we compared responses to inulin for the potential modulation of the systemic metabolism and neuroprotection via gut-brain axis in mice with human APOE ϵ3 and ϵ4 alleles.
METHOD: We performed experiments with young mice expressing the human APOE3 (E3FAD mice and APOE4 gene (E4FAD mice). We fed mice with either inulin or control diet for 16 weeks starting from 3 months of age. We determined gut microbiome diversity and composition using16s rRNA sequencing, systemic metabolism using in vivo MRI and metabolomics, and blood–brain barrier (BBB) tight junction expression using Western blot.
RESULTS: In both E3FAD and E4FAD mice, inulin altered the alpha and beta diversity of the gut microbiome, increased beneficial taxa of bacteria and elevated cecal short chain fatty acid and hippocampal scyllo-inositol. E3FAD mice had altered metabolism related to tryptophan and tyrosine, while E4FAD mice had changes in the tricarboxylic acid cycle, pentose phosphate pathway, and bile acids. Differences were found in levels of brain metabolites related to oxidative stress, and levels of Claudin-1 and Claudin-5 BBB tight junction expression.
DISCUSSION: We found that inulin had many similar beneficial effects in the gut and brain for both E3FAD and E4FAD mice, which may be protective for brain functions and reduce risk for neurodegeneration. . E3FAD and E4FAD mice also had distinct responses in several metabolic pathways, suggesting an APOE-dependent nutrigenetic effects in modulating systemic metabolism and neuroprotection
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