Liver injury due to COVID-19 in critically ill adult patients. A retrospective study

INTRODUCTION AND AIM

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) emerged, causing the current pandemic of acute respiratory disease known as COVID-19. Liver injury due to COVID-19 is defined as any liver injury occurring during the course of the disease and treatment of patients with COVID-19, with or without liver disease. The incidence of elevated liver transaminases, alanine aminotransferase (ALT) and aspartate aminotransferase (AST), ranges from 2.5 to 76.3%. The aim of the present study was to describe the hepatic biochemical abnormalities, after a SARS-CoV-2-positive polymerase chain reaction (PCR) test, and the mortality rate in critically ill patients.

MATERIALS AND METHODS

A retrospective study was conducted that included 70 patients seen at a private hospital in Mexico City, within the time frame of February-December 2021. Median patient age was 44.5 years (range: 37-57.2) and 43 (61.4%) of the patients were men. Liver function tests were performed on the patients at hospital admission.

RESULTS

Gamma glutamyl transferase (GGT) levels were elevated (p = 0.032), as were those of AST (p = 0.011) and ALT (p = 0.021). The patients were stratified into age groups: 18-35, 36-50, and > 50 years of age. The 18 to 35-year-olds had the highest liver enzyme levels and transaminase levels were higher, the younger the patient. Due to the low mortality rate (one patient whose death did not coincide with a hepatic cause), the multivariate analysis showed an R2 association of 0.689, explained by AST, GGT, and C-reactive protein levels.

CONCLUSIONS

Despite the increase in transaminases in our study population during the course of COVID-19, there was no increase in mortality. Nevertheless, hospitalized patient progression should be continuously followed.

Wildfire-related smoke inhalation worsens cardiovascular risk in sleep disrupted rats

Introduction

As a lifestyle factor, poor sleep status is associated with increased cardiovascular morbidity and mortality and may be influenced by environmental stressors, including air pollution.

Methods

To determine whether exposure to air pollution modified cardiovascular effects of sleep disruption, we evaluated the effects of single or repeated (twice/wk for 4 wks) inhalation exposure to eucalyptus wood smoke (ES; 964 μg/m3 for 1 h), a key wildland fire air pollution source, on mild sleep loss in the form of gentle handling in rats. Blood pressure (BP) radiotelemetry and echocardiography were evaluated along with assessments of lung and systemic inflammation, cardiac and hypothalamic gene expression, and heart rate variability (HRV), a measure of cardiac autonomic tone.

Results and Discussion

GH alone disrupted sleep, as evidenced by active period-like locomotor activity, and increases in BP, heart rate (HR), and hypothalamic expression of the circadian gene Per2. A single bout of sleep disruption and ES, but neither alone, increased HR and BP as rats transitioned into their active period, a period aligned with a critical early morning window for stroke risk in humans. These responses were immediately preceded by reduced HRV, indicating increased cardiac sympathetic tone. In addition, only sleep disrupted rats exposed to ES had increased HR and BP during the final sleep disruption period. These rats also had increased cardiac output and cardiac expression of genes related to adrenergic function, and regulation of vasoconstriction and systemic blood pressure one day after final ES exposure. There was little evidence of lung or systemic inflammation, except for increases in serum LDL cholesterol and alanine aminotransferase. These results suggest that inhaled air pollution increases sleep perturbation-related cardiovascular risk, potentially in part by increased sympathetic activity.

Reducing inequities in maternal and child health in rural Guatemala through the CBIO+ Approach of Curamericas: 6. Management of pregnancy complications at Community Birthing Centers (Casas Maternas Rurales)

BACKGROUND

In Guatemala, Indigenous women have a maternal mortality ratio over twice that of non-Indigenous women. Long-standing marginalization of Indigenous groups and three decades of civil war have resulted in persistent linguistic, economic, cultural, and physical barriers to maternity care. Curamericas/Guatemala facilitated the development of three community-built, -owned, and -operated birthing centers, Casas Maternas Rurales (referred to here as Community Birthing Centers), where auxiliary nurses provided physically accessible and culturally acceptable clinical care. The objective of this paper is to assess the management of complications and the decision-making pathways of Birthing Center staff for complication management and referral. This is the sixth paper in the series of 10 articles. Birthing centers are part of the Expanded Census-based, Impact-oriented Approach, referred to as CBIO+.

METHODS

We undertook an explanatory, mixed-methods study on the handling of pregnancy complications at the Birthing Centers, including a chart review of pregnancy complications encountered among 1,378 women coming to a Birthing Center between 2009 and 2016 and inductively coded interviews with Birthing Center staff.

RESULTS

During the study period, 1378 women presented to a Birthing Center for delivery-related care. Of the 211 peripartum complications encountered, 42.2% were successfully resolved at a Birthing Center and 57.8% were referred to higher-level care. Only one maternal death occurred, yielding a maternal mortality ratio of 72.6 maternal deaths per 100,000 live births. The qualitative study found that staff attribute their successful management of complications to frequent, high-quality trainings, task-shifting, a network of consultative support, and a collaborative atmosphere.

CONCLUSION

The Birthing Centers were able to resolve almost one-half of the peripartum complications and to promptly refer almost all of the others to a higher level of care, resulting in a maternal mortality ratio less than half that for all Indigenous Guatemalan women. This is the first study we are aware of that analyzes the management of obstetrical complications in such a setting. Barriers to providing high-quality maternity care, including obtaining care for complications, need to be addressed to ensure that all pregnant women in such settings have access to a level of care that is their fundamental human right.

Reducing inequities in maternal and child health in rural Guatemala through the CBIO+ Approach of Curamericas: 1. Introduction and project description

BACKGROUND

The Curamericas/Guatemala Maternal and Child Health Project, 2011-2015, was implemented in the Western Highlands of the Department of Huehuetenango, Guatemala. The Project utilized three participatory approaches in tandem: the Census-Based, Impact-Oriented (CBIO) Approach, the Care Group Approach, and the Community Birthing Center Approach. Together, these are referred to as the Expanded CBIO Approach (or CBIO+).

OBJECTIVE

This is the first article of a supplement that assesses the effectiveness of the Project's community-based service delivery platform that was integrated into the Guatemalan government's rural health care system and its special program for mothers and children called PEC (Programa de Extensión de Cobertura, or Extension of Coverage Program).

METHODS

We review and summarize the CBIO+ Approach and its development. We also describe the Project Area, the structure and implementation of the Project, and its context.

RESULTS

The CBIO+ Approach is the product of four decades of field work. The Project reached a population of 98,000 people, covering the entire municipalities of San Sebastián Coatán, Santa Eulalia, and San Miguel Acatán. After mapping all households in each community and registering all household members, the Project established 184 Care Groups, which were composed of 5-12 Care Group Volunteers who were each responsible for 10-15 households. Paid Care Group Promoters provided training in behavior change communication every two weeks to the Care Groups. Care Group Volunteers in turn passed this communication to the mothers in their assigned households and also reported back to the Care Group Promoters information about any births or deaths that they learned of during the previous two weeks as a result of their regular contact with their neighbors. At the outset of the Project, there was one Birthing Center in the Project Area, serving a small group of communities nearby. Two additional Birthing Centers began functioning as the Project was operating. The Birthing Centers encouraged the participation of traditional midwives (called comadronas) in the Project Area.

CONCLUSION

This article serves as an introduction to an assessment of the CBIO+ community-based, participatory approach as it was implemented by Curamericas/Guatemala in the Western Highlands of the Department of Huehuetenango, Guatemala. This article is the first of a series of articles in a supplement entitled Reducing Inequities in Maternal and Child Health in Rural Guatemala through the CBIO+ Approach of Curamericas.

Reducing inequities in maternal and child health in rural Guatemala through the CBIO+ Approach of Curamericas: 7. The empowering effect of Care Groups

BACKGROUND

While there is extensive published evidence regarding the effectiveness of the Care Group Approach in promoting community-wide health behavior change, there is no published evidence regarding its empowering effect on its participants. Our study aimed to understand if the Care Group Approach as applied in the Curamericas/Guatemala Maternal and Child Health Project in isolated rural mountainous communities in Guatemala produced evidence of empowerment among the female participants. This is the seventh of 10 papers describing the expanded Census-Based, Impact-Oriented (CBIO+) Approach in improving the health and well-being of mothers and children in the rural highlands of the Department of Huehuetenango, Guatemala.

METHODS

We conducted semi-structured individual and group interviews with 96 female Care Group participants -including Level-1 Care Group Promoters, Care Group Volunteers, and Self-Help Group participants. The participants were from six communities - two from each of the three municipalities making up the Project Area. Data were analyzed both using deductive thematic and by exploring the following social constructs: perceived social status, self-efficacy, decision-making autonomy, and formation of social capital.

RESULTS

The findings supported the hypothesis that Care Group participation was an empowering process. The primary themes that emerged included increased respect accorded to women in the community, women's willingness and ability to make decisions and their confidence in making those decisions, and the development of stronger bonds among Care Group members, with other community members, and with community leaders.

CONCLUSION

Through increased theoretical and practical knowledge about important maternal and child health matters and through the social experience of obtaining this knowledge and sharing it with other community members, participation in the Care Group Approach empowered participants to make positive health behavior changes for themselves and for their children and families. This, in turn, led many participants to become more engaged in community activities for improved health and beyond, thereby enhancing social capital in the community. We conclude that the Care Group Approach, as applied in this setting, has made it possible for marginalized indigenous women living in a male-dominated society to become more empowered.

Reducing inequities in maternal and child health in rural Guatemala through the CBIO+ Approach of Curamericas: 3. Expansion of population coverage of key interventions

BACKGROUND

This is the third in a series of 10 articles describing the Curamericas/Guatemala Maternal and Child Health Project, 2011-2015, and its effectiveness in improving the health and well-being of 15,327 children younger than 5 years of age and 32,330 women of reproductive age in the Department of Huehuetenango in180 communities that make up the municipalities of San Sebastian Coatán, Santa Eulalia, and San Miguel Acatán. The Project combined the Census-Based, Impact-Oriented (CBIO) Approach with the Care Group Approach and the  Community Birthing Center (Casa Materna Rural) Approach. This combined approach we refer to as CBIO+. The Project trained women volunteers every two weeks (in Care Groups) to provide health education to neighboring households. Messages focused on the promotion of maternal and newborn health, nutrition, prevention and treatment of acute respiratory infection and diarrhea in children, and immunizations.

METHODS

Household knowledge, practice and coverage (KPC) surveys were executed at baseline in January 2011 and at endline in June 2015 to measure changes in levels of knowledge of danger signs, key household practices (such as Essential Newborn Care and handwashing), and health service utilization (such as antenatal care and care seeking for a child with signs of pneumonia) in two separate Project Areas (Area A with 41 months and Area B with 20 months of full intervention implementation).

RESULTS

For the 24 indicators of the interventions under the Project's control, statistically significant improvements were observed for 21 in Area A and 19 in Area B. However, for some of the interventions that required support from the government's Extension of Coverage Program (immunization, family planning, and vitamin A administration) no improvements were noted because of the cessation of the program by the government after Project implementation began. In both Areas A and B one-half of the indicators improved by at least two-fold.

CONCLUSION

This community-based Project has been effective in quickly achieving marked improvements in indicators for interventions that are important for the health of mothers and children. These achievements are notable in view of the challenging context in which the Project was implemented.

Reducing inequities in maternal and child health in rural Guatemala through the CBIO+ Approach of Curamericas: 9. Key stakeholder perspectives on strengthening the CBIO+ Approach

BACKGROUND

Community-based health interventions have been an integral part of recent health gains globally. An innovative approach to delivering community health care combines the Census-Based, Impact-Oriented (CBIO) Approach with Care Groups and Community Birthing Centers called Casas Maternas Rurales. CBIO+ was adopted by Curamericas/Guatemala in its Maternal and Child Health Project, 2011-2015. Here, we describe the opinions of Project staff and local government health care workers about the strengths and challenges of CBIO+.  METHODS: Self-administered questionnaires, key informant interviews, and focus group discussions were used to obtain the views of 21 staff members from Curamericas/Guatemala as well as 15 local government health workers. The evaluation focused on four primary areas: (1) advisability of integrating the CBIO+ Approach into the government's rural health system, (2) staff knowledge of the CBIO+ Approach, (3) advantages, disadvantages and challenges of the CBIO+ Approach, and (4) proposed improvements to the CBIO+ Approach. The data were coded into categories and from these categories themes were derived.

RESULTS

The most commonly mentioned advantage of CBIO+ was the inclusion of the community in program planning, which improved participation. Many respondents noted that the CBIO+ Approach was challenging to implement in communities with internal conflicts. Among other challenges mentioned were coordinating (both among the Project staff and with others in the communities), maintenance of a high level of community participation, and overcoming opposition of men to women's participation in Care Groups. The staff mentioned a number of possible changes, including increasing male involvement, raising salaries for community-level paid staff, providing volunteers with incentives, and improving coordination both internally and externally. There was a strong demand among the local Ministry of Public Health and Social Welfare staff for the Project to continue.

CONCLUSION

The CBIO+ Approach and its implementation by Curamericas/Guatemala was overall embraced by local staff. By eliciting feedback while the project was ongoing, actionable areas for improvement were identified.

Reducing inequities in maternal and child health in rural Guatemala through the CBIO+ approach of Curamericas: 2. Study site, design, and methods

BACKGROUND

The Curamericas/Guatemala Maternal and Child Health Project, 2011-2015, included implementation research designed to assess the effectiveness of an approach referred to as CBIO+ , composed of: (1) the Census-Based, Impact-Oriented (CBIO) Approach, (2) the Care Group Approach, and (3) the Community Birthing Center Approach. This is the second paper in a supplement of 10 articles describing the implementation research and its findings. Paper 1 describes CBIO+ , the Project Area, and how the Project was implemented.

OBJECTIVE

This paper describes the implementation research design and details of how it was carried out.

METHODS

We reviewed the original implementation research protocol and the methods used for all data collection related to this Project. The protocol and methods used for the implementation research related to this Project were all standard approaches to the monitoring and evaluation of child survival projects as developed by the United States Agency for International Development Child Survival and Health Grants Program (CSHGP) and the CORE Group. They underwent independent peer review supervised by the CSHGP before the implementation research began.

RESULTS

The study area was divided into two sets of communities with a total population of 98,000 people. Project interventions were implemented in Area A from 2011 until the end of the project in 2015 (44 months) and in Area B from late 2013 until 2015 (20 months). Thus, Area B served as a quasi-comparison area during the first two years of Project implementation. The overarching study question was whether the CBIO+ Approach improved the health and well-being of children and mothers. The outcome indicators included (1) changes in population coverage of evidence-based interventions, (2) changes in childhood nutritional status, (3) changes in the mortality of children and mothers, (4) quality of care provided at Community Birthing Centers, (5) the impact of the Project on women's empowerment and social capital, (6) stakeholder assessment of the effectiveness of the CBIO+ Approach, and (7) the potential of wider adoption of the CBIO+ Approach.

CONCLUSION

The implementation research protocol guided the assessment of the effectiveness of the CBIO+ Approach in improving the health and well-being of children, mothers, and their communities.

Reducing inequities in maternal and child health in rural Guatemala through the CBIO+ Approach of Curamericas: 5. Mortality assessment

BACKGROUND

The Curamericas/Guatemala Maternal and Child Health Project, 2011-2015, implemented the Census-Based, Impact-Oriented Approach, the Care Group Approach, and the Community Birthing Center Approach. Together, this expanded set of approaches is known as CBIO+. This is the fifth of 10 papers in our supplement describing the Project and the effectiveness of the CBIO+ Approach. This paper assesses causes, levels, and risk factors for mortality along with changes in mortality.

METHODS

The Project maintained Vital Events Registers and conducted verbal autopsies for all deaths of women of reproductive age and under-5 children. Mortality rates and causes of death were derived from these data. To increase the robustness of our findings, we also indirectly estimated mortality decline using the Lives Saved Tool (LiST).

FINDINGS

The leading causes of maternal and under-5 mortality were postpartum hemorrhage and pneumonia, respectively. Home births were associated with an eight-fold increased risk of both maternal (p = 0.01) and neonatal (p = 0.00) mortality. The analysis of vital events data indicated that maternal mortality declined from 632 deaths per 100,000 live births in Years 1 and 2 to 257 deaths per 100,000 live birth in Years 3 and 4, a decline of 59.1%. The vital events data revealed no observable decline in neonatal or under-5 mortality. However, the 12-59-month mortality rate declined from 9 deaths per 1000 live births in the first three years of the Project to 2 deaths per 1000 live births in the final year. The LiST model estimated a net decline of 12, 5, and 22% for maternal, neonatal and under-5 mortality, respectively.

CONCLUSION

The baseline maternal mortality ratio is one of the highest in the Western hemisphere. There is strong evidence of a decline in maternal mortality in the Project Area. The evidence of a decline in neonatal and under-5 mortality is less robust. Childhood pneumonia and neonatal conditions were the leading causes of under-5 mortality. Expanding access to evidence-based community-based interventions for (1) prevention of postpartum hemorrhage, (2) home-based neonatal care, and (3) management of childhood pneumonia could help further reduce mortality in the Project Area and in similar areas of Guatemala and beyond.

Reducing inequities in maternal and child health in rural Guatemala through the CBIO+ Approach of Curamericas: 8. Impact on women's empowerment

BACKGROUND

Indigenous Maya women in the rural highlands of Guatemala have traditionally faced constraints to decision-making and participation in community affairs. Anecdotal experiences from previous Curamericas Global projects in Guatemala and Liberia have suggested that interventions using the CBIO+ Approach (which consists of implementing together the Census-Based, Impact-Oriented Approach, the Care Group Approach, and Community Birthing Centers), can be empowering and can facilitate improvements in maternal and child health. This paper, the eighth in a series of 10 papers examining the effectiveness of CBIO+ in improving the health and well-being of mothers and children in an isolated mountainous rural area of the Department of Huehuetenango, explores changes in women's empowerment among mothers of young children associated with the Curamericas/Guatemala Maternal and Child Health Project, 2011-2015.

METHODS

Knowledge, practice, and coverage (KPC) surveys and focus group discussions (FGDs) were used to explore six indicators of women's empowerment focusing on participation in health-related decision-making and participation in community meetings. KPC surveys were conducted at baseline (January 2012) and endline (June 2015) using standard stratified cluster sampling. Seventeen FGDs (9 with women, 3 with men, 2 with mothers-in-law, and 3 with health committees), approximately 120 people in all, were conducted to obtain opinions about changes in empowerment and to identify and assess qualitative factors that facilitate and/or impede women's empowerment.

RESULTS

The KPC surveys revealed statistically significant increases in women's active participation in community meetings. Women also reported statistically significant increases in rates of participation in health-related decision-making. Further, the findings show a dose-response effect for two of the six empowerment indicators. The qualitative findings from FGDs show that the Project accelerated progress in increasing women's empowerment though women still face major barriers in accessing needed health care services for themselves and their children.

CONCLUSION

The Project achieved some notable improvements in women's decision-making autonomy and participation in community activities. These improvements often translated into making decisions to practice recommended health behaviors. Traditional cultural norms and the barriers to accessing needed health services are not easily overcome, even when empowerment strategies are effective.

Reducing inequities in maternal and child health in rural Guatemala through the CBIO+ Approach of Curamericas: 10. Summary, cost effectiveness, and policy implications

BACKGROUND

This is the final of 10 papers that describe the implementation of the Expanded Census-Based, Impact-Oriented Approach (CBIO+) by Curamericas/Guatemala in the Cuchumatanes mountains of the Department of Huehuetenango and its effectiveness in improving the health and well-being of women and children in a population of 98,000 in three municipalities. The CBIO+ Approach consists of three components: the CBIO (Census-Based, Impact-Oriented) Approach, the Care Group Approach, and the Community Birthing Center Approach.

METHODS

Each of the preceding papers was summarized. An assessment was made regarding the degree to which the initial implementation research hypotheses were confirmed. The total field cost per capita for operation of the Project was calculated. An assessment of the cost-effectiveness of the Project was made based on the estimated impact of the Project, the number of lives saved, and the number of disability-adjusted life years averted.

RESULTS

The Project attained a number of notable achievements in terms of expanding the coverage of key maternal and child health interventions, improving the nutritional status of children, reducing the mortality of children and mothers, providing quality care for mothers at the Community Birthing Centers (Casas Maternas Rurales) that integrate traditional midwives (comadronas) into the care of women during childbirth at the birthing centers, as well as empowering women and building social capital in the communities. CBIO+ is an effective and affordable approach that is particularly notable for its capacity to engage communities in the process of improving the health of mothers and children. Overall, there is strong and consistent evidence in support of the research hypotheses. The findings did produce evidence of declines in under-5 and maternal mortality, but they were not as robust as had been hoped.

CONCLUSION

CBIO+ is an approach that has been effective in engaging communities in the process of improving the health of their mothers and children and in reducing health inequities in this marginalized, difficult-to-reach population of Indigenous Maya people. The CBIO+ Approach is cost-effective and merits further development and broader application in Guatemala and beyond.

Reducing inequities in maternal and child health in rural Guatemala through the CBIO+ Approach of Curamericas: 4. Nutrition-related activities and changes in childhood stunting, wasting, and underweight

BACKGROUND

This is the fourth paper in our supplement on improving the health and well-being of rural indigenous Maya mothers and children in the Western Highlands of Guatemala, where the prevalence of stunting is the highest in Latin America and among the highest in the world. Reducing childhood undernutrition was one of the objectives of the Maternal and Child Health Project, 2011-2015, implemented by Curamericas/Guatemala. The implementation research portion of the Project attempted to determine if there were greater improvements in childhood nutritional status in the Project Area than in comparison areas and whether or not a dose-response effect was present in terms of a greater improvement in the Project Area with a longer duration of interventions.  METHODS: The Project provided nutrition-related messages to mothers of young children, cooking sessions using locally available nutritious foods, a lipid-based nutrient supplement (Nutributter®) for a short period of time (4 months), anti-helminthic medication, and repeated growth monitoring and nutrition counseling. Measures of height and weight for calculating the prevalence of underweight, stunting, and wasting in under-2 children were analyzed and compared with the anthropometric data for children in the rural areas of the Northwestern Region and in the Western Highlands of Guatemala.

RESULTS

The prevalence of stunting declined in Area A from 74.5% in September 2012 to 39.5% in June 2015. Area A comprised approximately one-half of the Project Area and was the geographic area with the greatest intensity and duration of nutrition-related Project interventions. Minimal improvements in stunting were observed in the Northwestern Region, which served as a comparison area. Improvements in multiple output and outcome indicators associated with nutritional status were also observed in Areas A and B: infant and young child feeding practices, routine growth monitoring and counseling, and household practices for the prevention and treatment of diarrhea.

CONCLUSION

The Project Area in which Curamericas/Guatemala implemented the CBIO+ Approach experienced a reduction in the prevalence of stunting and other measures of undernutrition in under-2 children. Given the burden of undernutrition in Guatemala and other parts of the world, this approach merits broader application and further evaluation.

PERCEPCIONES SOBRE LA REHABILITACIÓN DURANTE LA PANDEMIA COVID-19 DE LAS PERSONAS CON DISCAPACIDAD MOTORA

Antecedentes y objetivo

La Organización Mundial de la Salud declaró a la infección por COrona VIrus Disease 19 (COVID-19) como pandemia y recomendó, como medida preventiva, el distanciamiento social. Esto afectó a todos los tratamientos médico-clínicos, incluidos los relacionados con el proceso de rehabilitación física. El objetivo fue describir las percepciones sobre el proceso de rehabilitación debido a las modificaciones experimentadas por las personas con discapacidad motora de un hospital de rehabilitación durante la pandemia por COVID-19.

Pacientes y métodos

Diseño cualitativo. La muestra elegida fue por conveniencia y el análisis de datos fue por análisis temático, el cual permite identificar, analizar y reportar temas relevantes. Las entrevistas se realizaron a pacientes atendidos en la División de Kinesiología. Criterios de inclusión: adultos > 18 años, diagnóstico de discapacidad motora, en tratamiento kinésico ≥ 1 mes de forma ambulatoria, con alta temprana de internación o internados en el momento de la realización del estudio y firma del consentimiento informado. Criterios de exclusión: alta kinésica por motivos diferentes a la COVID-19 y diagnóstico de enfermedad psiquiátrica.

Resultados

La muestra se compuso de 16 participantes. El 31,2% era de sexo femenino. Doce presentaron diversas alteraciones neurológicas y 4, secuelas de amputación. Se identificaron 4 temas principales: importancia de la rehabilitación, modificaciones/interrupción del tratamiento, actividades de la vida diaria y telerrehabilitación.

Conclusiones

Se describieron las percepciones sobre el proceso de rehabilitación y el impacto en las modificaciones experimentadas en las personas con discapacidad motora. Destacamos la importancia de la telerrehabilitación como un recurso alternativo.

[Psychometric properties of observational instruments to evaluate wheelchair skills in persons with a spinal cord injury: A systematic review]

A total of 60% of people with a spinal cord injury are completely dependent on a wheelchair. There is a wide variety of instruments that assess wheelchair skills, but they are not specific for this population. OBJECTIVE: To identify, assess, compare and summarize the psychometric properties of instruments that assess wheelchair skills in persons with a spinal cord injury. A systematic review was conducted and observational instruments were included that assessed wheelchair skills in persons with spinal cord injury. Eleven articles were identified that evaluated eight instruments. Most of them reported activities according to the International Classification of Functioning, Disability and Health. Reliability was the most frequently evaluated psychometric property. The Queensland Evaluation of Wheelchair Skills and the Adapted Manual Wheelchair Circuit had the best degrees of confidence in the evidence, and their application could guide the selection of pertinent therapeutic strategies. PROSPERO registration: CRD42020161430.

Peptide functionalized magneto-plasmonic nanoparticles obtained by microfluidics for inhibition of β-amyloid aggregation

Synthesis of magneto-plasmonic nanoparticles for the inhibition of β-amyloid fibril formation.

Casas Maternas in the Rural Highlands of Guatemala: A Mixed-Methods Case Study of the Introduction and Utilization of Birthing Facilities by an Indigenous Population

In an isolated mountainous area of Guatemala with high maternal mortality, an NGO-sponsored approach engaged communities to operate local, culturally appropriate birthing facilities and is achieving high and equitable utilization. Likely success factors:

Community engagement and ownership

Close location of facilities

Perceived high quality of services

Engagement of traditional birth attendants in the birthing process and as advocates for facility use

Background:

An international NGO, with financial and managerial support from “partner” communities, established Casas Maternas (birthing facilities) in 3 municipalities in the isolated northwestern highlands of the department of Huehuetenango in Guatemala—an area with high maternal mortality ratio (338 maternal deaths per 100,000 live births). Traditional birth attendants are encouraged to bring patients for delivery at the Casas Maternas, where trained staff are present and access to referral care is facilitated.

Methods:

We conducted a mixed-methods study in San Sebastian Coatán municipality to assess the contribution of 2 Casas Maternas to health facility deliveries among partner and non-partner communities, with particular emphasis on equity in access. We surveyed all women who delivered in the study area between April 2013 and March 2014, the first full year in which both Casas Maternas in the study area were operating. In addition, using purposive sampling, we conducted in-depth interviews with 22 women who delivered and 6 focus group discussions with 42 community leaders, traditional birth attendants, and Casas Maternas staff members. We analyzed the quantitative data using descriptive statstics and the qualitative data with descriptive content analysis.

Results:

Of the 321 women eligible for inclusion in the study, we surveyed 275 women (14.3% could not be located or refused to participate). Between April 2013 and March 2014, 70% of women living in partner communities delivered in a health facility (54% in a Casa Materna) compared with 30% of women living in non-partner communities (17% in a Casa Materna). There was no statistically significant difference in uptake of the Casa Materna by maternal education and only a weak effect by household wealth. In contrast, distance from the Casa Materna had a pronounced effect. Traditional birth attendants were strong advocates for utilization of the Casa Materna and played an important role in the decision regarding where the birth would take place. In addition, the program’s outreach component, in which peer volunteers visit homes to promote healthy behaviors and appropriate use of health facilities, was identified as a key factor in encouraging mothers to deliver in facilities.

Discussion:

The Casa Materna approach to strengthening maternity care as developed by Curamericas has potential to increase health facility utilization in isolated mountainous areas inhabited by an indigenous population where access to government services is limited and where maternal mortality is high. The approach shows promise for broader application in Guatemala and beyond.

Integrated control of Boophilus microplus ticks in Cuba based on vaccination with the anti-tick vaccine Gavac

Boophilus microplus has developed resistance against a range of chemical acaricides which has stimulated the development of alternative methods such as vaccination against ticks. In Cuba, the Bm86-based recombinant vaccine Gavac has been successfully used in a number of controlled laboratory and field trials in cattle against B. microplus. In this paper, we have evaluated Gavac in a large scale field trial wherein 588,573 dairy cattle were vaccinated with the aim to reduce the number of acaricidal treatments. It was found that the number of acaricidal treatments could be reduced by 87% over a period of 8 years (1995--2003). Prior to the introduction of the vaccine, 54 clinical cases of babesiosis and six fatal cases were reported per 1000 animals. Six years later, the incidence of babesiosis was reduced to 1.9 cases per 1000 cattle and mortality reduced to 0.18 per 1000. The national consumption of acaricides in Cuba could be reduced by 82% after the implementation of the integrated anti-B. microplus control program.

Selective heterologous regulation of 5-HT1A receptor-stimulated 35S GTPgammaS binding in the anterior cingulate cortex as a result of 5-HT2 receptor activation

Previous studies have shown that administration of the 5-HT(2) receptor agonist DOI to rats results in the heterologous desensitization of 5-HT(1A) receptor-mediated behavioral and neuroendocrine responses [Neuropsychopharmacology 19 (1998) 354; J. Neurosci. 21 (2001) 7919]. We hypothesized that the basis for these changes in 5-HT(1A) receptor function may involve changes in the capacity of the 5-HT(1A) receptor to activate G proteins. We examined the effect of chronic administration of DOI on the regulation of 5-HT(1A) receptor function at the level of receptor-G protein interaction using quantitative autoradiography of [(35)S]GTPgammaS binding stimulated by the 5-HT(1A) receptor agonist (+/-)8-OH-DPAT (1 microM). Repeated administration of DOI (1 mg/kg, s.c. once daily for 8 days) resulted in a marked down-regulation in 5-HT(2A) binding sites, as labeled by the antagonist radioligand [(3)H]ketanserin, throughout the cerebral cortex. Chronic DOI treatment also resulted in a significant and selective attenuation of 5-HT(1A) receptor-stimulated [(35)S]GTPgammaS binding in the anterior cingulate cortex (vehicle-treated: 74+/-7.7% above basal; DOI-treated: 43+/-4.6% above basal). Interestingly, 5-HT(1A) receptor-stimulated [(35)S]GTPgammaS binding was not altered in the dorsal or median raphe, or in the limbic structures and other cortical regions examined. The decrease in 5-HT(1A) receptor-stimulated [(35)S]GTPgammaS binding in anterior cingulate cortex was not due to a decrease in 5-HT(1A) receptor number, indicating that the capacity of the 5-HT(1A) receptor to activate G proteins is attenuated in this cortical area following repeated DOI treatment. The heterologous regulation of 5-HT(1A) receptor function by chronic 5-HT(2) receptor activation in the anterior cingulate cortex raises interesting questions as to how the regulatory interaction between these serotonin receptor subtypes influences cognition, memory and emotion.

Isolation of oral spirochetes from dogs and cats and provisional identification using polymerase chain reaction (PCR) analysis specific for human plaque Treponema spp

Identification of plaque spirochetes from dogs is rare and no studies to date report cultivation of canine or feline plaque spirochetes. Plaque samples obtained from canine and feline patients were cultured in broth media. Spirochetes cultured were subjected to microscopic evaluation and were cloned on a solid medium. The clones were provisionally identified using species-specific PCR for treponema isolated from human plaque. Canine spirochete clones included Treponema denticola, T. socranskii ssp., T. vincentii, T. maltophilum, T. medium, and T. pectinovorum. Feline clones included T. maltophilum and T. socranskii. Non-amplified clones may represent novel treponemes. Future studies will be aimed at comparison of the spirochetes present in dogs and cats with or without periodontal disease.

Adherence to and penetration through endothelial cells by oral treponemes

Oral spirochetes were co-incubated with monolayers of endothelial cells seeded into multiwell plates or onto filters mounted in plastic chambers. Attachment was assessed using an enzyme-linked immunosorbent assay and scanning electron microscopy. Invasiveness was determined by monitoring media beneath filters within chambers for spirochetes using darkfield microscopy. Transmission electron microscopy was used to estimate intercellular and intracellular passage of spirochetes through monolayers. All tested treponemes attached to monolayers in a dose- and time-dependent manner, except Treponema phagedenis. A few treponemes were observed within host cell cytoplasm. Unidentified spirochetes obtained from dental plaque were also invasive. Results indicate that oral spirochetes possess virulence-associated characteristics shared with pathogenic spirochetes. Further studies should examine the possibility that invasive spirochetes could disseminate from within affected gingiva.

An outbreak of bartonellosis in Zamora Chinchipe Province in Ecuador

We report an outbreak of human bartonellosis in Zamora Chinchipe Province in Ecuador, which occurred in 1995-1996. Nineteen cases were seen, of which 18 presented with classical oroya fever (fever and profound anaemia) and one with verruga peruana; 11 of the cases (58%) had positive blood films containing Bartonella bacilliformis. The houses of cases and neighbouring controls were visited; blood samples for thin films and cultures were collected from members of each house and a questionnaire was administered to investigate possible risk factors for disease transmission. In none of those sampled was B. bacilliformis bacteriologically demonstrable. All case houses were located in isolated areas at the margin of forest and the presence of dead rodents was reported only in case houses (P < 0.05). We suggest that human bartonellosis is a zoonosis with a natural rodent reservoir and that migrant humans infected in this way may become a temporary reservoir host in populated areas.

Plant regeneration of indica rice (Oryza sativa) cultivars from mature embryo-derived calli

Plant regeneration from seven-week-old callus cultures derived from mature embryos of several indica rice cultivars was achieved with frequencies of morphogenic calli from 10 to 47%. Three media were tested both for callogenesis and plant regeneration. For 3 of the 7 genotypes examined, the best combination of media for plant regeneration was Murashige & Skoog basal medium: MSC (callogenesis) and MSR (regeneration). The rates of callogenesis were not related to the capacity for plant regeneration. Two genotypes CR-1113 and CR-5272 produced the highest number of regenerated green plants. The results of this study suggest that genetic differences could be directly linked to the ability to regenerate in these plant cultivars.

Bartonellosis in Zamora Chinchipe province in Ecuador

Human bartonellosis was investigated in the Ecuadorian province of Zamora Chinchipe; 17 cases were identified retrospectively from hospital records over the period 1984-1995, mostly from 6 communities in the provincial district of Zumba. A questionnaire concerning risk factors for disease transmission was administered in these 6 communities. Blood samples were taken from individuals with current febrile illnesses or skin lesions suggestive of bartonellosis. Samples for detection of Bartonella bacilliformis were also taken from all school-age children in communities where historical cases had been identified by questionnaire. No bacteriologically positive case was identified and no evidence of asymptomatic infection was detected. Risk factors for disease transmission, identified by the questionnaire, included the presence of sick or dying chickens and guinea-pigs. It was suggested that bartonellosis is a zoonosis with wild animals, probably rodents, as the reservoir. The widespread use of residual insecticides and the easy availability of antibiotics is likely to have modified the epidemiology of this disease over the last decade.

Serum and alveolar bone phosphatase changes reflect bone turnover during orthodontic tooth movement

Acid and alkaline phosphatase changes have been demonstrated histochemically and biochemically during the early stages of an orthodontic tooth movement cycle. However, quantitative data on neither alveolar bone nor serum phosphatase changes over an entire tooth movement cycle have been reported. This study examined acid, tartrate-resistant acid (TRAP), and alkaline phosphatase changes in serum and alveolar bone during an orthodontic tooth movement cycle in 288 adult male Sprague-Dawley strain rats. The effect of differing initial force magnitudes on phosphatase changes was also examined. Data were obtained from four groups: sham control and three treatment groups (20, 40, and 60 gm activations). Each group (n = 72) was subdivided equally into six sacrifice subgroups (1,3,5,7,10, and 14 days). Treated animals received a precisely loaded orthodontic tipping force to the maxillary molars. Phosphatase measures were obtained by colorimetric assays. Analysis of variance (ANOVA) procedures were performed to examine for differences within groups across time and among groups at each time point. Data from treated animals were combined, adjusted for control values, and examined across time to permit comparisons with previously described histomorphometric changes. Analysis of variance indicated no differences occurred in the control group across time. Significant differences in serum values occurred across time within the force groups (p < 0.01), and among force and control groups at various times in both sera and bone (p < 0.05). In the pooled treatment data, a peak in serum acid phosphatase occurred at day 1 and in bone at day 3 (the later mirroring histomorphometric findings) (p < 0.001).(ABSTRACT TRUNCATED AT 250 WORDS)

Plant regeneration from leaf and seed-derived calli and suspension cultures of the African perennial wild rice, Oryza longistaminata

Plant regeneration from 2-month-old callus cultures derived from immature leaves of 7-day-old aseptic seedlings and mature embryos of the African wild rice Oryza longistaminata was achieved at 20% and 100% frequency, respectively. The morphogenic potential of the embryo-derived calluses dropped from 100% at the third subculture to 12.5 % at the 12th subculture. Five-month-old morphogenic calluses were used to establish a fast-growing suspension culture which, when plated onto semisolid medium, still retained its ability to regenerate plantlets 9 months after initiation. Histological analyses demonstrated that late plant regeneration from established callus and suspension cultures occured through organogenesis, although some embryogenesis events may have taken place during initiation of these cultures.