scholarly journals Sex-Specific Differences in Glioblastoma

Cells ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1783
Author(s):  
Anna Carrano ◽  
Juan Jose Juarez ◽  
Diego Incontri ◽  
Antonio Ibarra ◽  
Hugo Guerrero Cazares
Keyword(s):  
Sex Differences ◽  
Immune System ◽  
Molecular Level ◽  
Deep Understanding ◽  
Protective Role ◽  
Men And Women ◽  
Individualized Approach ◽  
Male Patients ◽  
Outcome Differences

Sex differences have been well identified in many brain tumors. Even though glioblastoma (GBM) is the most common primary malignant brain tumor in adults and has the worst outcome, well-established differences between men and women are limited to incidence and outcome. Little is known about sex differences in GBM at the disease phenotype and genetical/molecular level. This review focuses on a deep understanding of the pathophysiology of GBM, including hormones, metabolic pathways, the immune system, and molecular changes, along with differences between men and women and how these dimorphisms affect disease outcome. The information analyzed in this review shows a greater incidence and worse outcome in male patients with GBM compared with female patients. We highlight the protective role of estrogen and the upregulation of androgen receptors and testosterone having detrimental effects on GBM. Moreover, hormones and the immune system work in synergy to directly affect the GBM microenvironment. Genetic and molecular differences have also recently been identified. Specific genes and molecular pathways, either upregulated or downregulated depending on sex, could potentially directly dictate GBM outcome differences. It appears that sexual dimorphism in GBM affects patient outcome and requires an individualized approach to management considering the sex of the patient, especially in relation to differences at the molecular level.

scholarly journals Amyotrophic Lateral Sclerosis, a Multisystem Pathology: Insights into the Role of TNFα

2017 ◽  
Vol 2017 ◽  
pp. 1-16 ◽  
Author(s):  
Massimo Tortarolo ◽  
Daniele Lo Coco ◽  
Pietro Veglianese ◽  
Antonio Vallarola ◽  
Maria Teresa Giordana ◽  
...  
Keyword(s):  
Amyotrophic Lateral Sclerosis ◽  
Immune System ◽  
Disease Progression ◽  
Protective Role ◽  
Progression Rate ◽  
Neuron Death ◽  
Multisystem Disease ◽  
Als Patients ◽  
Lateral Sclerosis

Amyotrophic lateral sclerosis (ALS) is considered a multifactorial, multisystem disease in which inflammation and the immune system play important roles in development and progression. The pleiotropic cytokine TNFαis one of the major players governing the inflammation in the central nervous system and peripheral districts such as the neuromuscular and immune system. Changes in TNFαlevels are reported in blood, cerebrospinal fluid, and nerve tissues of ALS patients and animal models. However, whether they play a detrimental or protective role on the disease progression is still not clear. Our group and others have recently reported opposite involvements of TNFR1 and TNFR2 in motor neuron death. TNFR2 mediates TNFαtoxic effects on these neurons presumably through the activation of MAP kinase-related pathways. On the other hand, TNFR2 regulates the function and proliferation of regulatory T cells (Treg) whose expression is inversely correlated with the disease progression rate in ALS patients. In addition, TNFαis considered a procachectic factor with a direct catabolic effect on skeletal muscles, causing wasting. We review and discuss the role of TNFαin ALS in the light of its multisystem nature.

scholarly journals Sex differences in severity and mortality from COVID-19: are males more vulnerable?

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Ajay Pradhan ◽  
Per-Erik Olsson
Keyword(s):  
Sex Differences ◽  
Immune System ◽  
Immune Responses ◽  
Molecular Mechanisms ◽  
Viral Infections ◽  
Basic Research ◽  
Contributing Factors ◽  
High Infection ◽  
Males And Females

Abstract Coronavirus disease 2019 (COVID-19) has shown high infection and mortality rates all over the world, and despite the global efforts, there is so far no specific therapy available for COVID-19. Interestingly, while the severity and mortality of COVID-19 are higher in males than in females, the underlying molecular mechanisms are unclear. In this review, we explore sex-related differences that may be contributing factors to the observed male-biased mortality from COVID-19. Males are considered the weaker sex in aspects related to endurance and infection control. Studies show that viral RNA clearance is delayed in males with COVID-19. A recent study has indicated that the testis can harbor coronavirus, and consequently, males show delayed viral clearance. However, the role of testis involvement in COVID-19 severity and mortality needs further research. Males and females show a distinct difference in immune system responses with females eliciting stronger immune responses to pathogens. This difference in immune system responses may be a major contributing factor to viral load, disease severity, and mortality. In addition, differences in sex hormone milieus could also be a determinant of viral infections as estrogen has immunoenhancing effects while testosterone has immunosuppressive effects. The sex-specific severity of COVID-19 infections indicates that further research on understanding the sex differences is needed. Inclusion of both males and females in basic research and clinical trials is required to provide critical information on sex-related differences that may help to better understand disease outcome and therapy.

Effect of electromagnetic waves from mobile phone on immune status of male rats: possible protective role of vitamin D

2017 ◽  
Vol 95 (2) ◽  
pp. 151-156 ◽  
Author(s):  
Ola Ahmed El-Gohary ◽  
Mona Abdel-Azeem Said
Keyword(s):  
Vitamin D ◽  
Immune System ◽  
Mobile Phone ◽  
Protective Role ◽  
Vitamin D Supplementation ◽  
Male Rats ◽  
Control Group ◽  
Group I ◽  
Mobile Phone Radiation

There are considerable public concerns about the relationship between mobile phone radiation and human health. The present study assesses the effect of electromagnetic field (EMF) emitted from a mobile phone on the immune system in rats and the possible protective role of vitamin D. Rats were randomly divided into six groups: Group I: control group; Group II: received vitamin D (1000 IU/kg/day) orally; Group III: exposed to EMF 1 h/day; Group IV: exposed to EMF 2 h/day; Group V: exposed to EMF 1 h/day and received vitamin D (1000 IU/kg/day); Group VI: exposed to EMF 2 h/day and received vitamin D (1000 IU/kg/day). After 30 days of exposure time, 1 h/day EMF exposure resulted in significant decrease in immunoglobulin levels (IgA, IgE, IgM, and IgG); total leukocyte, lymphocyte, eosinophil and basophil counts; and a significant increase in neutrophil and monocyte counts. These changes were more increased in the group exposed to 2 h/day EMF. Vitamin D supplementation in EMF-exposed rats reversed these results when compared with EMF-exposed groups. In contrast, 7, 14, and 21 days of EMF exposure produced nonsignificant differences in these parameters among all experimental groups. We concluded that exposure to mobile phone radiation compromises the immune system of rats, and vitamin D appears to have a protective effect.

Assessment of race and sex as risk factors for colonization with multidrug-resistant organisms in six nursing homes

2020 ◽  
Vol 41 (10) ◽  
pp. 1222-1224
Author(s):  
Kyle J. Gontjes ◽  
Kristen E. Gibson ◽  
Bonnie J. Lansing ◽  
Lona Mody ◽  
Marco Cassone
Keyword(s):  
Risk Factors ◽  
Sex Differences ◽  
Multidrug Resistant ◽  
Demographic Characteristics ◽  
Body Site ◽  
Home Setting ◽  
Multidrug Resistant Organisms ◽  
Nursing Home Setting ◽  
Male Patients

AbstractThe role of demographic characteristics, such as sex and race, as risk factors for colonization with multidrug-resistant organisms, has not been established in the nursing home setting. We demonstrate significantly higher prevalence overall in male patients, and sex differences are dependent on organism of interest and body site.

Linking Organizational Justice to Burnout: Are Men and Women Different?

2005 ◽  
Vol 96 (3) ◽  
pp. 805-816 ◽  
Author(s):  
Carolina Moliner ◽  
Vicente Martínez-Tur ◽  
José M. Peiró ◽  
José Ramos
Keyword(s):  
Sex Differences ◽  
Procedural Justice ◽  
Organizational Justice ◽  
Regression Models ◽  
Interactional Justice ◽  
Hierarchical Regression ◽  
Men And Women ◽  
Moderating Role

This study tested the links from organizational justice with burnout and the moderating role of sex in these relationships. A total of 279 contact employees (149 men and 130 women) were surveyed in 59 hotels. A questionnaire was used to measure distributive, procedural, and interactional justice as well as employees' burnout (exhaustion, cynicism, and efficacy). Hierarchical regression models, calculated to test the hypothesized effects, indicated the predominance of procedural justice over distributive and interpersonal with regard to the direct relationships between organizational justice and burnout. Analysis also showed that links from interactional justice with exhaustion and cynicism were greater for women than for men. In contrast, there were no significant sex differences on the efficacy dimension.

scholarly journals Gender differences in aging: cognition, emotions, and neuroimaging studies

2002 ◽  
Vol 4 (2) ◽  
pp. 197-210 ◽  
Keyword(s):  
Gender Differences ◽  
Sex Differences ◽  
Brain Volume ◽  
Brain Regions ◽  
Brain Disorders ◽  
Resonance Imaging ◽  
Blood Flow Pattern ◽  
Men And Women ◽  
Brain Behavior

Gender and aging moderate brain-behavior relationships. Advances in neuroscience enable integration of neurobehavioral, neuroanatomic, and neurophysiology measures. Here we present neurobehavioral studies thai examine cognitive and emotion processing in healthy men and women and highlight the effects of sex differences and aqinq. Neuroanatomic studies with maqnetic resonance imaging (MRI) indicate that the progressive decrease in brain volume affects froniotemporal brain regions in men more than in Vi/omen, Functional imaging methods suggest sex differences in rate of blood flow, pattern of glucose metabolism, and receptor activity. The role of ovarian hormones is important in elucidating the observed relationships. A life span perspective on gender differences through the integration of available methodologies will advance understanding healthy people and the effects of brain disorders.

scholarly journals The role of LEPR, PPARG and PPARGC1A genes polymorphisms in the development of metabolic disorders in patients with vibration diseases

2021 ◽  
Vol 100 (7) ◽  
pp. 711-716
Author(s):  
Liudmila B. Masnavieva ◽  
Nadezhda P. Chistova ◽  
Olga V. Naumova ◽  
Irina V. Kudaeva
Keyword(s):  
Metabolic Syndrome ◽  
Metabolic Disorders ◽  
Polymorphic Locus ◽  
Protective Role ◽  
Local Vibration ◽  
Lepr Gene ◽  
Male Patients ◽  
Combined Impact

Introduction. Patients with vibration disease (VD) often have obesity and metabolic syndrome (MS), which increase the risk of developing type 2 diabetes, hypertension, and other conditions predisposing to a decrease in the quality and longevity of life. Genetic predisposition, overnutrition, environmental factors, including industrial ones, and others are factors influencing the formation of MS. The aim of the study is to identify associations between polymorphisms of the LEPR, PPARG and PPARGC1A genes, metabolic syndrome and obesity in VD patients caused by exposure to local vibration and the combined effects of local and general vibration. Material and methods. We examined 248 VD male patients exposed to local vibration and the combined impact of the local and general vibration. We have identified a subgroup of MS and obesity cases. The distribution of genotypes of the LEPR, PPARG and PPARGC1A genes in groups was studied. Results. In the group of VD and MS patients exposed to the combined effect of local and general vibration, the Gln/Gln genotype of the Arg223Gln polymorphic locus of the LEPR gene was less common, and the Arg / Gln genotype in MS cases was detected more often than in patients without it. Among patients with VD caused by exposure to local vibration with a waist circumference of more than 102 cm, the Gly / Ser genotype of the Gly482Ser polymorphism of the PPARGC1A gene was more common than among those with lower values of this indicator. Conclusion. In patients with VD caused by combined exposure to local and general vibration, the Gln/Gln genotype carrier of the Arg223Gln polymorphism of the LEPR gene may play a protective role in the formation of MS. Among individuals with VD caused by exposure to local vibration, carriers of the heterozygous genotype of the Gly482Ser polymorphism of the PPARGC1A gene may have a predisposition to the development of obesity. The obtained results are preliminary and require further research.

ULCERATIVE COLITIS, IMMUNE SYSTEM AND IRON STATUS INTER-RELATIONSHIP AND THE PROTECTIVE ROLE OF DATE AND GRAPE SEED EXTRACTS IN RAT MODEL

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Ghada Abo-Elwafa ICFIND Conference ◽  
Sahar Al-Okbi ◽  
Enas Al-Siedy ◽  
Rasha Mohamed ◽  
Hoda Mabrok ◽  
...  
Keyword(s):  
Ulcerative Colitis ◽  
Immune System ◽  
Rat Model ◽  
Iron Status ◽  
Grape Seed ◽  
Protective Role ◽  
Grape Seed Extracts ◽  
Seed Extracts

Leucopenia during Treatment Is a Good Prognostic Risk Factor for Patients Undergoing Chemotherapy for Hodgkin’s Lymphoma: An Analysis of the German Hodgkin Study Group (GHSG).

Blood ◽  
2005 ◽  
Vol 106 (11) ◽  
pp. 2674-2674
Author(s):  
Beate Klimm ◽  
Thorsten Reineke ◽  
Heinz Haverkamp ◽  
Hans T. Eich ◽  
Karolin Behringer ◽  
...  
Keyword(s):  
Protective Role ◽  
Hodgkin's Lymphoma ◽  
Who Grade ◽  
Male And Female ◽  
Female Patients ◽  
Male Patients ◽  
Severe Leucopenia ◽  
Who Grade Iii ◽  
Grade Iii

Abstract Purpose: A systematic analysis of gender-specific factors in Hodgkin’s lymphoma (HL) studies previously revealed a better outcome for female HL patients. Factors contributing to better prognosis among female patients not only included more favorable risk factors at diagnosis, but also more treatment-induced severe leuopenia (WHO grade III/IV). The purpose of the current analysis was to characterize and investigate the protective role of severe leucopenia for both, male and female HL patients. Patients and Methods: 4626 HL patients including 2050 females (f) and 2576 males (m) of all prognostic risk groups who were enrolled into the multicenter studies HD4-HD9 of the GHSG were evaluated. The median follow-up after treatment was 5.5 years. Results: Female patients had a significantly better freedom from treatment failure (FFTF) with 81% at 66 months (95% confidence interval 79% – 82%), when compared with male patients (74%; 72% – 76%; p<.0001). This was in part related to the occurrence of more acute chemotherapy-related leucopenia (WHO grade III/IV): 69.9% in female patients and 55.2% in male patients (p<.0001). Furthermore, severe leucopenia during chemotherapy was strongly associated with better FFTF for both, male and female patients. Separate multivariate analyses showed that severe leucopenia remained significant when only male patients were included (0.011). In addition, patients who developed severe leucopenia within the first two cycles of chemotherapy also had a significantly better FFTF (p=.0002) compared with all other patients (Klimm et al, JCO in press). When considering patients with advanced HL undergoing BEACOPP in baseline or escalated dose, the presence of severe leucopenia during chemotherapy (p=.0074) was associated with a better outcome. This finding was also confirmed when only the first two cycles of treatment were analyzed (p =.0205). Conclusion: The protective role of severe leucopenia suggests evaluating of a more individualized therapy in future trials, that may be tailored in a response-adapted manner depending on the individual toxicity profile within the first cycles.

Sign in / Sign up

Export Citation Format

Share Document