scholarly journals Metabolome analysis of masseter muscle in senescence-accelerated mouse-prone 8 (SAMP8)

2021 ◽  
Author(s):  
Yoshiaki Kato ◽  
Teruhide Hoshino ◽  
Yudai Ogawa ◽  
Keisuke Sugahara ◽  
Akira Katakura
Keyword(s):  
Metabolic Pathway ◽  
Metabolic Pathways ◽  
Masseter Muscle ◽  
Principal Component ◽  
Hypoxanthine Phosphoribosyl Transferase ◽  
Rt Pcr ◽  
Metabolome Analysis ◽  
Term Care ◽  
Significant Difference ◽  
Senescence Accelerated Mouse

Abstract Frailty is a vulnerable state that marks the transition to long-term care for the elders. Recently, the relationship between frailty and oral function has been attracting attention. By clarifying the specific metabolic changes in the masseter muscle, we aimed to contribute to maintenance of masticatory function. The purpose of this study is to clarify the changes in masseter muscle of senescence-accelerated mouse-prone 8 (SAMP8) mice metabolites and metabolic pathways due to aging. Capillary electrophoresis-mass spectrometry metabolome analysis was performed on the masseter muscle of 12-week-old, 40-week-old, and 55-week-old mice. Expression analysis was performed by reverse transcription polymerase chain reaction (RT-PCR) and immunofluorescence for the metabolome pathways extracted by metabolome analysis that considered to be related to aging. Nineteen metabolites had a significant difference in absolute quantitative values and were considered to affect the first principal component by factor loading. The extracted metabolic pathways were glycolysis, polyamine metabolome pathway, and purine metabolome pathway. RT-PCR was performed on the extracted metabolome pathways. Expression of the spermidine synthase and hypoxanthine phosphoribosyl transferase genes with significant differences by RT-PCR was confirmed by immunofluorescence. The metabolic pathways considered to be related to aging in masseter muscle were glycolysis, polyamine metabolic pathway, and purine metabolic pathway.

scholarly journals Metabolomics Reveals the Alteration of Metabolic Pathway by Alpha-Melanocyte-Stimulating Hormone in B16F10 Melanoma Cells

Molecules ◽  
2020 ◽  
Vol 25 (15) ◽  
pp. 3384 ◽  
Author(s):  
Seung-Ho Seo ◽  
Jae Kwon Jo ◽  
Eun-Ju Kim ◽  
Seong-Eun Park ◽  
Seo Yeon Shin ◽  
...  
Keyword(s):  
Citric Acid ◽  
Metabolic Pathway ◽  
Metabolic Pathways ◽  
Skin Pigmentation ◽  
Principal Component ◽  
Melanoma Cells ◽  
B16f10 Melanoma ◽  
Melanocyte Stimulating Hormone ◽  
B16f10 Melanoma Cells ◽  
Stimulating Hormone

The purpose of this study was to understand the changes of metabolic pathway induced by alpha-melanocyte-stimulating hormone (α-MSH) in B16F10 melanoma cells in an untargeted metabolomics approach. Cells were treated with 100 nM of α-MSH and then incubated for 48 h. α-MSH increased tyrosinase activity and melanin content by 56.5 and 61.7%, respectively, compared to untreated cells after 48 h of cultivation. The clear separation between groups was observed in the principal component analysis score plot, indicating that the levels of metabolites of melanoma cells were altered by treatment with α-MSH. Metabolic pathways affected by α-MSH were involved in some amino acid metabolisms. The increased levels of fumaric acid, malic acid, oxaloacetic acid and citric acid related to the citric acid cycle pathway after α-MSH treatment suggested enhanced energy metabolism. Metabolic pathways altered by α-MSH treatment can provide useful information to develop new skin pigmentation inhibitors or anti-obesity drugs.

scholarly journals Inhibition of Kynurenine Metabolism and Its Effect in Mitochondrial Function in Hepatocellular Carcinoma

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 124-125
Author(s):  
Raul Castro-Portuguez ◽  
Samuel Freitas ◽  
George Sutphin
Keyword(s):  
Hepatocellular Carcinoma ◽  
Mitochondrial Function ◽  
De Novo ◽  
Principal Component ◽  
Kynurenine Pathway ◽  
The Cancer Genome Atlas ◽  
Wilcoxon Test ◽  
Nad Synthesis ◽  
Significant Difference ◽  
Kynurenine Metabolism

Abstract Hepatocellular carcinoma (HCC) is the most prevalent cancer in the liver. The majority of ingested tryptophan is processed in the liver through the kynurenine pathway, the endpoint of which is de novo NAD+ biosynthesis. Dysregulation of tryptophan-kynurenine metabolism and NAD+ synthesis may promote mitochondrial malfunction, tumor reprogramming, and carcinogenesis. Using a publicly available gene expression dataset from liver hepatocellular carcinoma (LIHC) samples available through The Cancer Genome Atlas (TCGA; n = 371), we employed Principal Component Analysis (PCA), hierarchical clustering, gene-pattern expression profiling, and survival analysis to cluster patients and determine overall survival. Our analysis of genes encoding kynurenine pathway enzymes determined that patients with high QPRT expression had a poor prognosis with decreased median survival, with no effect on the maximum survival. There is a significant difference in the survival between patients with high QPRT expression relative to patients with high HAAO/AFMID expression (HR = 1.2, [95% CI 0.5-1.8] P = 0.0181, Gehan-Breslow-Wilcoxon Test). Patients with high QPRT expression have higher survival rates compared with low QPRT expression (HR = 1.4, [95% CI 0.9-2.2] P = 0.0344, Gehan-Breslow-Wilcoxon Test). To test the consequences of kynurenine-pathway inhibition in mitochondrial function and morphology we use 4-Cl-3HAA, an irreversible HAAO inhibitor, and observed a small increase in mitochondrial fragmentation in HepG2 cells after 24 hours of treatment. We conclude that kynurenine metabolism may be useful as a biomarker to predict patient prognosis among HCC patients. In ongoing work, we are testing QPRT inhibitors in cell culture as a potential adjuvant for chemotherapies.

scholarly journals The Influence of Race and Gender on Staff-Resident Interactions in Nursing Homes

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 185-185
Author(s):  
Rachel McPherson ◽  
Barbara Resnick ◽  
Elizabeth Galik
Keyword(s):  
Racial Differences ◽  
Long Term Care ◽  
Analysis Of Covariance ◽  
Positive Interactions ◽  
Term Care ◽  
Race And Gender ◽  
Significant Difference ◽  
And Gender

Abstract Communication and interactions are an integral part of care in long-term care settings. Resident variables, such as race and gender, shape communication and interaction between staff and residents. The Quality of Interactions Schedule (QuIS) was developed to measure the quality of verbal and nonverbal interactions among nursing staff and older adults initially for those in acute care and later used as well in a variety of long term care settings. A quantified measurement of the quality of interactions between residents and staff was created to quantify the QuIS. The purpose of this study was to describe the gender and racial differences in scored quality of interactions. Data for the present study was based on baseline data from the Evidence Integration Triangle for Behavioral and Psychological Symptoms of Dementia (EIT-4-BPSD) implementation study. A total of 535 residents from 55 settings were included in the analyses. An analysis of covariance was conducted to determine a difference in QuIS scores between males and females while controlling for age. The second model tested for differences in QuIS scores between blacks and whites while controlling for age and gender. There was not a statistically significant difference in QuIS scores between male and female residents. There was a significant difference in QuIS scores between those who were black versus white, such that those who were black received more positive interactions from staff than those who were white. Future work should focus on a deeper examination of resident factors and staff factors that may influence these interactions.

scholarly journals RT-PCR analysis of Deformed wing virus in honeybees (Apis mellifera) and mites (Varroa destructor)

2005 ◽  
Vol 86 (12) ◽  
pp. 3419-3424 ◽  
Author(s):  
Constanze Yue ◽  
Elke Genersch
Keyword(s):  
Varroa Destructor ◽  
Pcr Analysis ◽  
Body Parts ◽  
Rt Pcr ◽  
Larval Food ◽  
Viral Pathogen ◽  
Deformed Wing Virus ◽  
Significant Difference ◽  
Almost All ◽  
Viral Sequences

Deformed wing virus (DWV) is a honeybee viral pathogen either persisting as an inapparent infection or resulting in wing deformity. The occurrence of deformity is associated with the transmission of DWV through Varroa destructor during pupal stages. Such infections with DWV add to the pathology of V. destructor and play a major role in colony collapse in the course of varroosis. Using a recently developed RT-PCR protocol for the detection of DWV, individual bees and mites originating from hives differing in Varroa infestation levels and the occurrence of crippled bees were analysed. It was found that 100 % of both crippled and asymptomatic bees were positive for DWV. However, a significant difference in the spatial distribution of DWV between asymptomatic and crippled bees could be demonstrated: when analysing head, thorax and abdomen of crippled bees, all body parts were always strongly positive for viral sequences. In contrast, for asymptomatic bees viral sequences could be detected in RNA extracted from the thorax and/or abdomen but never in RNA extracted from the head. DWV replication was demonstrated in almost all DWV-positive body parts of infected bees. Analysing individual mites for the presence of DWV revealed that the percentage of DWV-positive mites differed between mite populations. In addition, it was demonstrated that DWV was able to replicate in some but not all mites. Interestingly, virus replication in mites was correlated with wing deformity. DWV was also detected in the larval food, implicating that in addition to transmission by V. destructor DWV is also transmitted by feeding.

Biochemical parameters and relation to disease severity in COVID-19 patients

2021 ◽  
pp. 93-96
Keyword(s):  
Biochemical Parameters ◽  
Troponin I ◽  
Total Bilirubin ◽  
Early Stage ◽  
Length Of Hospital Stay ◽  
Rt Pcr ◽  
Sodium Potassium ◽  
Appropriate Treatment ◽  
Significant Difference ◽  
Severity Of The Disease

Aim: In this study, we aimed to evaluated whether there is an association between the biochemistry parameters obtained from the first blood test after hospitalization of COVID 19 patients and the prognosis and severity of the disease. Thus, we planned to identify patients with a severe course at an early stage and to help physicians determine the appropriate treatment. Material and Method: The study included 106 COVID 19 patients confirmed by RT-PCR. Patients were categorized into two groups: those admitted to the hospital ward and discharged with recovery (mild cases) and those admitted directly or eventually to the intensive care unit (severe cases). Biochemical parameters of the groups were compared with the Mann Whitney-U Test, as none of the compared parameters fit the normal distribution. Results: There was no statistically significant difference between the male-female numbers and ages of the two groups. Statistically significant differences were observed in the length of hospital stay, procalcitonin, hs-troponin I, ferritin, glucose, urea, creatinine, calcium, direct bilirubin, AST, LDH and CRP values (p<0,05). However, no significant difference was found in sodium, potassium, chloride, total bilirubin and ALT tests. Conclusion: The results show that some biochemistry parameters may be used to predict the prognosis of the disease. In particular, procalcitonin, hs troponin I, LDH and CRP values seem to be moderate biomarkers of the prognosis of the disease.

scholarly journals Differences between the profiles of institutionalized elderly people and those on waiting lists and who do not want to be institutionalized

2016 ◽  
Vol 19 (1) ◽  
pp. 105-118 ◽  
Author(s):  
Andrea Mendes Araújo ◽  
Temístocles Bezerra de Sousa Neto ◽  
Ângelo José Gonçalves Bós
Keyword(s):  
The Elderly ◽  
Waiting Lists ◽  
Waiting List ◽  
Elderly Persons ◽  
Cross Sectional ◽  
Term Care ◽  
Number Of Children ◽  
Elderly Resident ◽  
Significant Difference ◽  
Resident Group

Objective To identify the demographic, environmental, economic, functional, and health characteristics and the lifestyle habits of elderly persons considering their degree of institutionalization. Method A cross-sectional observational study was carried out of individuals in long-term care institutions for the elderly (resident group) in João Pessoa in the state of Paraíba, those on the waiting list (waiting list group) for such institutions, and those who did not demonstrate interest in being institutionalized (non-waiting list group). Fifty elderly persons per group were interviewed, paired by sex, age and education level. Results The non-waiting list group had a higher proportion of married individuals (p<0.0001), mean number of children (p=0.0068), number of homeowners (p=0.0060) and less difficulty going out, with a higher frequency of activities. The waiting list group presented a higher proportion of individuals living alone (p=0.0089), and a lower frequency and more difficulty going out. There was no significant difference in the functional capacity of the three groups (p=0.2019). Conclusion There were differences among the three groups; however, the waiting list group had much more similar characteristics to the resident group than the non-waiting list group. Elderly persons on waiting lists to be institutionalized represent a neglected social group both in terms of research and public policies.

Comparison of ELISA and RT-PCR assays for the detection of Tomato spotted wilt virus in peanut

2009 ◽  
Vol 36 (2) ◽  
pp. 133-137 ◽  
Author(s):  
P. M. Dang ◽  
D. L. Rowland ◽  
W. H. Faircloth
Keyword(s):  
Tomato Spotted Wilt Virus ◽  
Enzyme Linked Immunosorbent Assay ◽  
Infection Rates ◽  
Rt Pcr ◽  
Chi Square ◽  
Tomato Spotted Wilt ◽  
Significant Difference ◽  
Pcr Assays ◽  
Chi Square Analysis ◽  
Wilt Virus

Abstract Diagnosis of Tomato spotted wilt virus (TSWV) in peanut can be accomplished by enzyme-linked immunosorbent assay (ELISA) or reverse transcription polymerase chain reaction (RT-PCR) but there has been no report of a direct comparison of the success of the two assays in evaluating infection rates of field-grown peanut. We collected peanut root samples from field-grown plants, 76 in 2006 and 48 in 2007, and tested these samples by both ELISA and RT-PCR assays for the presence of TSWV. Out of 124 samples, 50 (40.3%) and 57 (46.0%) were positive for TSWV by ELISA and RT-PCR respectively. In 13.7% of these samples, ELISA and RT-PCR differed in their results. However, Chi square analysis showed no significant difference between the results for these two assays. This result supports the conclusion that ELISA and RT-PCR are comparable for detecting TSWV infection rates in field-grown peanuts.

In vitro human masseter muscle hypersensitivity: a possible explanation for increase in masseter tone

1996 ◽  
Vol 80 (5) ◽  
pp. 1547-1553 ◽  
Author(s):  
P. J. Adnet ◽  
H. Reyford ◽  
B. M. Tavernier ◽  
T. Etchrivi ◽  
I. Krivosic ◽  
...  
Keyword(s):  
Masseter Muscle ◽  
Fiber Type ◽  
Vastus Lateralis ◽  
Threshold Concentration ◽  
Vastus Lateralis Muscle ◽  
Type I ◽  
Cross Sectional ◽  
Significant Difference ◽  
Maximal Tension

To determine whether a difference in fiber-type caffeine and Ca2+ sensitivities exists between human masseter and vastus lateralis skeletal muscle, we compared the fiber-type caffeine sensitivities in chemically skinned muscle fibers from 13 masseter and 18 vastus lateralis muscles. Caffeine sensitivity was defined as the threshold concentration inducing > 10% of the maximal tension obtained after the fiber was loaded with a 1.6 x 10(-2) mM Ca2+ solution for 30 s. Significant difference in the mean caffeine sensitivity was found between type I masseter fibers [2.57 +/- 1.32 (SD) mM] vs. type I (6.02 +/- 1.74 mM) and type II vastus lateralis fibers (11.25 +/- 3.13 mM). Maximal Ca(2+)-activated force per cross-sectional area was significantly different between masseter and vastus lateralis fibers. However, the Ca2+ concentration corresponding to half-maximal tension (pCa50) was not significantly different between type I masseter (pCa50 5.9 +/- 0.02) and type I vastus lateralis muscle (pCa50 6.01 +/- 0.08). These results suggest that the increase in caffeine sensitivity of masseter muscle reflects the presence of a low reactivity threshold of the sarcoplasmic reticulum.

scholarly journals Stiffness of the Masseter Muscle in Children—Establishing the Reference Values in the Pediatric Population Using Shear-Wave Elastography

2021 ◽  
Vol 18 (18) ◽  
pp. 9619
Author(s):  
Cyprian Olchowy ◽  
Anna Olchowy ◽  
Aleksander Pawluś ◽  
Mieszko Więckiewicz ◽  
Luca Maria Sconfienza
Keyword(s):  
Shear Wave ◽  
Masseter Muscle ◽  
Pediatric Population ◽  
Shear Wave Elastography ◽  
Total Sample ◽  
Healthy Children ◽  
Significant Difference ◽  
The Right ◽  
The Impact ◽  
Masseter Muscles

In children, the quality and muscle function are altered in many pathologic conditions, including temporomandibular disorders. Although several methods have been used to evaluate muscle tonus, none became a golden standard. Moreover, the masseter muscle characteristics in children have not been investigated to date. This study aimed to measure the stiffness of the masseter muscle using shear-wave elastography in healthy children. We enrolled 30 healthy children (mean age 10.87 ± 3.38 years). The stiffness of masseter muscles was measured with shear wave elastography. Stiffness for the total sample was 6.37 ± 0.77 kPa. A comparison of the measurements did not show significant differences between the right and the left masseter muscles (left—6.47 ± 0.78 kPa; right—6.24 ± 0.76 kPa; p = 0.3546). A significant difference was seen between boys and girls (boys—5.94 ± 0.50 kPa; girls—6.63 ± 0.80; p = 0.0006). Shear-wave elastography is a promising diagnostic tool. It may help to detect changes in the stiffness of the masseter muscle and draw attention to pathological processes within the jaw muscles. Directions for further research shall include determining stiffness values in pathological conditions and the impact of biological and functional factors on the stiffness of the masseter muscle.

scholarly journals Leaf geometric morphometrics among populations of Dalbergia ecastaphyllum (L.) Taub.

2019 ◽  
Vol 35 (6) ◽  
Author(s):  
Daniel Vieira de Morais ◽  
Lorena Andrade Nunes ◽  
Vandira Pereira da Mata ◽  
Maria Angélica Pereira de Carvalho Costa ◽  
Geni da Silva Sodré ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Geometric Morphometrics ◽  
Cross Validation ◽  
Abiotic Factors ◽  
Principal Component ◽  
Canonical Variate ◽  
Validation Test ◽  
Significant Difference ◽  
Variate Analysis ◽  
Geographical Distances

Leaves are plant structures that express important traits of the environment where they live. Leaf description has allowed identification of plant species as well as investigation of abiotic factors effects on their development, such as gases, light, temperature, and herbivory. This study described populations of Dalbergia ecastaphyllum through leaf geometric morphometrics in Brazil. We evaluated 200 leaves from four populations. The principal component analysis (PCA) showed that the first four principal components were responsible for 97.81% of variation. The non-parametric multivariate analysis of variance (NPMANOVA) indicated significant difference between samples (p = 0.0001). The Mentel test showed no correlation between geographical distances and shape. The canonical variate analysis (CVA) indicated that the first two variables were responsible for 96.77 % of total variation, while the cross-validation test showed an average of 83.33%. D. ecastaphyllum leaves are elliptical and ovate.

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