62 research outputs found
The Integration of Javanese Immigrants with Malayan Society in Riau Province: Peace and Cultural Values
Transmigration is outlined in Article 4 of Law No. 15 of 1997 concerning transmigration in Indonesia. There are cases of social conflicts due to cultural differences between indigenous people and migrants, in this case, the Javanese and the Malayan, in Riau Province, one of the transmigration destinations. Practically speaking, this social integration process is tainted by conflict and violence. This study examines the tolerant cultural values of native Malays and Javanese migrants in Riau Province. Acculturation is the taking on or acceptance of one or more cultural traits as a result of coming into contact with two or more different cultural traits that are related to or cross paths with one another. This study used a qualitative research method with a descriptive research design that combined an interviewing strategy with a literature review. The findings of this study suggest that smart government policies and mutual support between the two cultures are key factors in the achievement of cultural inculcation in Riau Province.Keywords: Integration, Javanese, Riau Province, Transmigratio
Infection pre-Ad26.COV2.S-vaccination primes greater class switching and reduced CXCR5 expression by SARS-CoV-2-specific memory B cells
Neutralizing antibodies strongly correlate with protection for COVID-19 vaccines, but the corresponding memory B cells that form to protect against future infection are relatively understudied. Here we examine the effect of prior SARS-CoV-2 infection on the magnitude and phenotype of the memory B cell response to single dose Johnson and Johnson (Ad26.COV2.S) vaccination in South African health care workers. Participants were either naïve to SARS-CoV-2 or had been infected before vaccination. SARS-CoV-2-specific memory B-cells expand in response to Ad26.COV2.S and are maintained for the study duration (84 days) in all individuals. However, prior infection is associated with a greater frequency of these cells, a significant reduction in expression of the germinal center chemokine receptor CXCR5, and increased class switching. These B cell features correlated with neutralization and antibody-dependent cytotoxicity (ADCC) activity, and with the frequency of SARS-CoV-2 specific circulating T follicular helper cells (cTfh). Vaccination-induced effective neutralization of the D614G variant in both infected and naïve participants but boosted neutralizing antibodies against the Beta and Omicron variants only in participants with prior infection. In addition, the SARS-CoV-2 specific CD8+ T cell response correlated with increased memory B cell expression of the lung-homing receptor CXCR3, which was sustained in the previously infected group. Finally, although vaccination achieved equivalent B cell activation regardless of infection history, it was negatively impacted by age. These data show that phenotyping the response to vaccination can provide insight into the impact of prior infection on memory B cell homing, CSM, cTfh, and neutralization activity. These data can provide early signals to inform studies of vaccine boosting, durability, and co-morbidities
Intracranial V. cholerae Sialidase Protects against Excitotoxic Neurodegeneration
Converging evidence shows that GD3 ganglioside is a critical effector in a number of apoptotic pathways, and GM1 ganglioside has neuroprotective and noötropic properties. Targeted deletion of GD3 synthase (GD3S) eliminates GD3 and increases GM1 levels. Primary neurons from GD3S−/− mice are resistant to neurotoxicity induced by amyloid-β or hyperhomocysteinemia, and when GD3S is eliminated in the APP/PSEN1 double-transgenic model of Alzheimer's disease the plaque-associated oxidative stress and inflammatory response are absent. To date, no small-molecule inhibitor of GD3S exists. In the present study we used sialidase from Vibrio cholerae (VCS) to produce a brain ganglioside profile that approximates that of GD3S deletion. VCS hydrolyzes GD1a and complex b-series gangliosides to GM1, and the apoptogenic GD3 is degraded. VCS was infused by osmotic minipump into the dorsal third ventricle in mice over a 4-week period. Sensorimotor behaviors, anxiety, and cognition were unaffected in VCS-treated mice. To determine whether VCS was neuroprotective in vivo, we injected kainic acid on the 25th day of infusion to induce status epilepticus. Kainic acid induced a robust lesion of the CA3 hippocampal subfield in aCSF-treated controls. In contrast, all hippocampal regions in VCS-treated mice were largely intact. VCS did not protect against seizures. These results demonstrate that strategic degradation of complex gangliosides and GD3 can be used to achieve neuroprotection without adversely affecting behavior
SARS-CoV-2 Beta and Delta variants trigger Fc effector function with increased cross-reactivity
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) variants of concern (VOCs) exhibit escape
from neutralizing antibodies, causing concern about vaccine effectiveness. However, while non-neutralizing
cytotoxic functions of antibodies are associated with improved disease outcome and vaccine protection, Fc
effector function escape from VOCs is poorly defined. Furthermore, whether VOCs trigger Fc functions with
altered specificity, as has been reported for neutralization, is unknown. Here, we demonstrate that the Beta
VOC partially evades Fc effector activity in individuals infected with the original (D614G) variant. However, not
all functions are equivalently affected, suggesting differential targeting by antibodies mediating distinct Fc
functions. Furthermore, Beta and Delta infection trigger responses with significantly improved Fc cross-reactivity
against global VOCs compared with D614G-infected or Ad26.COV2.S-vaccinated individuals. This suggests
that, as for neutralization, the infecting spike sequence affects Fc effector function. These data have
important implications for vaccine strategies that incorporate VOCs, suggesting these may induce broader
Fc effector responses.The EDCTP2 program of the European Union’s Horizon 2020 program, Wellcome Centre for Infectious Diseases Research in Africa, the SA-MRC, MRC UK, NRF, the Lily and Ernst Hausmann Trust, the South African Research Chairs Initiative of the Department of Science and Innovation and National Research Foundation of South Africa, the SA Medical Research Council SHIP program, the Center for the AIDS Program of Research (CAPRISA) and an L’Oreal/UNESCO Women in Science South Africa Young Talents award.http://www.cell.com/cell-host-microbe/homeam2023ImmunologyInternal Medicin
People with intellectual disabilities at the end of their lives: The case for specialist care?
Background: People with intellectual disabilities have a shorter life expectancy, but healthcare improvements mean that they are beginning to live longer, with associated health difficulties. This means that there is an urgent need to focus research on ageing as well as end-of-life care. This study aimed to explore a specialist intellectual disability service for older people who are dying and how it related to their quality of life and to costs associated with care provided. Method: Data were collected for nine residents and 15 staff members of the specialist service. A single case study design with mixed methods including observations, interviews, standardized questionnaires and costs analysis was utilized. Results: We found positive results regarding overall quality of life, although individuals had limited social networks. Placement fees paid by local health trusts and social services departments were slightly higher than the estimated cost of care reflecting good financial management by a small voluntary sector organization. Conclusion: Whilst the philosophical arguments around “specialist” care persist, this service fills a gap in intellectual disability care provision
Ad26.COV2.S breakthrough infections induce high titers of neutralizing antibodies against Omicron and other SARS-CoV-2 variants of concern
The Janssen (Johnson & Johnson) Ad26.COV2.S non-replicating viral vector vaccine has been widely
deployed for COVID-19 vaccination programs in resource-limited settings. Here we confirm that neutralizing
and binding antibody responses to Ad26.COV2.S vaccination are stable for 6 months post-vaccination, when
tested against multiple SARS-CoV-2 variants. Secondly, using longitudinal samples from individuals who
experienced clinically mild breakthrough infections 4 to 5 months after vaccination, we show dramatically
boosted binding antibodies, Fc effector function, and neutralization. These high titer responses are of similar
magnitude to humoral immune responses measured in convalescent donors who had been hospitalized with
severe illness, and are cross-reactive against diverse SARS-CoV-2 variants, including the neutralizationresistant
Omicron (B.1.1.529) variant that currently dominates global infections, as well as SARS-CoV-1.
These data have implications for population immunity in areas where the Ad26.COV2.S vaccine has been
widely deployed, but where ongoing infections continue to occur at high levels.The South African Medical Research Council, the South African Research Chairs Initiative of the Department of Science and Innovation; the National Research Foundation of South Africa, the EDCTP2 program of the European Union’s Horizon 2020 program, the Wellcome Centre for Infectious Diseases Research in Africa (CIDRI-Africa), which is supported by core funding from the Wellcome Trust and the Poliomyelitis Research Foundation, MRC UK, NRF, the Lily and Ernst Hausmann Trust and L’Oreal/Unesco Women in Science South Africa Young Talents awardee.http://www.cell.com/cell-host-microbe/homeImmunologyInternal Medicin
Vitamin D3 Deficiency Differentially Affects Functional and Disease Outcomes in the G93A Mouse Model of Amyotrophic Lateral Sclerosis
Amyotrophic lateral sclerosis (ALS) is a neuromuscular disease characterized by motor neuron death in the central nervous system. Vitamin D supplementation increases antioxidant activity, reduces inflammation and improves motor neuron survival. We have previously demonstrated that vitamin D3 supplementation at 10× the adequate intake improves functional outcomes in a mouse model of ALS
Astrocyte scar formation aids central nervous system axon regeneration
Transected axons fail to regrow in the mature central nervous system. Astrocytic scars are widely regarded as causal in this failure. Here, using three genetically targeted loss-of-function manipulations in adult mice, we show that preventing astrocyte scar formation, attenuating scar-forming astrocytes, or ablating chronic astrocytic scars all failed to result in spontaneous regrowth of transected corticospinal, sensory or serotonergic axons through severe spinal cord injury (SCI) lesions. By contrast, sustained local delivery via hydrogel depots of required axon-specific growth factors not present in SCI lesions, plus growth-activating priming injuries, stimulated robust, laminin-dependent sensory axon regrowth past scar-forming astrocytes and inhibitory molecules in SCI lesions. Preventing astrocytic scar formation significantly reduced this stimulated axon regrowth. RNA sequencing revealed that astrocytes and non-astrocyte cells in SCI lesions express multiple axon-growth-supporting molecules. Our findings show that contrary to the prevailing dogma, astrocyte scar formation aids rather than prevents central nervous system axon regeneration
Socializing One Health: an innovative strategy to investigate social and behavioral risks of emerging viral threats
In an effort to strengthen global capacity to prevent, detect, and control infectious diseases in animals and people, the United States Agency for International Development’s (USAID) Emerging Pandemic Threats (EPT) PREDICT project funded development of regional, national, and local One Health capacities for early disease detection, rapid response, disease control, and risk reduction. From the outset, the EPT approach was inclusive of social science research methods designed to understand the contexts and behaviors of communities living and working at human-animal-environment interfaces considered high-risk for virus emergence. Using qualitative and quantitative approaches, PREDICT behavioral research aimed to identify and assess a range of socio-cultural behaviors that could be influential in zoonotic disease emergence, amplification, and transmission. This broad approach to behavioral risk characterization enabled us to identify and characterize human activities that could be linked to the transmission dynamics of new and emerging viruses. This paper provides a discussion of implementation of a social science approach within a zoonotic surveillance framework. We conducted in-depth ethnographic interviews and focus groups to better understand the individual- and community-level knowledge, attitudes, and practices that potentially put participants at risk for zoonotic disease transmission from the animals they live and work with, across 6 interface domains. When we asked highly-exposed individuals (ie. bushmeat hunters, wildlife or guano farmers) about the risk they perceived in their occupational activities, most did not perceive it to be risky, whether because it was normalized by years (or generations) of doing such an activity, or due to lack of information about potential risks. Integrating the social sciences allows investigations of the specific human activities that are hypothesized to drive disease emergence, amplification, and transmission, in order to better substantiate behavioral disease drivers, along with the social dimensions of infection and transmission dynamics. Understanding these dynamics is critical to achieving health security--the protection from threats to health-- which requires investments in both collective and individual health security. Involving behavioral sciences into zoonotic disease surveillance allowed us to push toward fuller community integration and engagement and toward dialogue and implementation of recommendations for disease prevention and improved health security
Land Conflict Resolution for Chilonga Village
The Ministry of Lands, Agriculture, Water, Climate, and Rural Resettlement issued statutory instrument (S.I) 50 of 2021, announcing the 12940 hectares of Chilonga land is commercialized for national food security. The statutory instrument (S.I) 50 of 2021 also stated that the Chilonga villagers immediately pave way for the lucerne grass irrigation project. The problem with this research is that the Ministry of Land has the power to relocate people in all communal lands according to the constitution of Zimbabwe and the Communal lands Act Chapter 20:04, but failed to resettle the Chilonga villagers. This research aims to analyze the causes of the Chilonga land conflict, the Ministry of Lands's capacity to carry out the Chilonga land resettlement, and how the government can intervene in resolving the Chilonga land conflict. Theories and concepts used are; strategy theory, conflict tree concept, conflict triangle theory, and national security concept. This research employs a qualitative research method involving nine informants. The results of the study show that the causes of the Chilonga land conflict are poor strategic planning, poor communication, cultural beliefs, political influence, lack of trust, and land compensation. The research results also show that the Ministry is lacking the capacity to conduct Chilonga resettlement. Finally, the research shows that the government should provide adequate support to the resettlement program and also should consider win-win conflict resolution
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