Sociodemographic and Behavioral Factors Associated With Hypertension and Depression in 4 Rural Communities in Northern Ghana: A Cross-Sectional Study.

OBJECTIVES: The prevalences of hypertension and depression in sub-Saharan Africa are substantial and rising, despite limited data on their sociodemographic and behavioral risk factors and their interactions. We undertook a cross-sectional study in 4 communities in the Upper East Region of Ghana to identify persons with hypertension and depression in the setting of a pilot intervention training local nurses and health volunteers to manage these conditions. METHODS: We quantified hypertension and depression prevalence across key sociodemographic factors (age, sex, occupation, education, religion, ethnicity, and community) and behavioral factors (tobacco use, alcohol use, and physical activity) and tested for association by multivariable logistic regression. RESULTS: Hypertension prevalence was higher in older persons (7.6% among 35- to 50-year-olds vs 16.4% among 51- to 70-year-olds) and among those reporting alcohol use (18.9% vs 8.5% between users and nonusers). In multivariable models, only older age (AOR 2.39 [1.02, 5.85]) and residence in the community of Wuru (AOR 7.60 [1.81, 32.96]) were independently associated with hypertension, and residence in Wuru (AOR 23.58 [7.75-78.25]) or Navio (AOR 7.41 [2.30-24.74]) was the only factor independently associated with depression. CONCLUSIONS: We report a high prevalence of both diseases overall and in select communities, a trend that requires further research to inform targeted chronic disease interventions.

Association of socio-demographic characteristics with hypertension awareness, treatment, and control in Bangladesh.

Hypertension has been rapidly growing in Bangladesh. However, there has been limited analysis of differences in the hypertension cascade across socio-demographic groups. This study was a secondary analysis of the 2017-18 Bangladesh Demographic and Health Survey. Four dichotomous outcome variables - hypertension prevalence, awareness among those with hypertension, treatment among those aware, and control among those treated - were analyzed. The variation of each outcome was assessed across socio-demographic factors. The association between socio-demographic characteristics and outcomes was analyzed using logistic regression. Less than half of the hypertensive individuals were aware of their hypertension (42.5%), and awareness was higher among those who were older, female, of higher household wealth, and living in urban areas. Among those aware, most were receiving treatment (87.4%), and this proportion was higher in older individuals (89.2% among 65 + , 70.4% among 18-24; p < 0.001). One-third of those treated (33.8%) had their blood pressure controlled, and this was higher among younger and more educated individuals. In multivariable models stratified by rural/urban community, most of the aforementioned trends remained with additional differences between communities. Notably, the association of higher education level with treatment odds differed in rural and urban communities (OR 0.34 [95%CI 0.16, 0.75] in rural; OR 2.83 [95%CI 1.04, 7.73] in urban). Efforts to improve hypertension awareness among individuals who are younger, male, of lower household wealth, and in rural areas are required to address disparities in care. Socio-demographic variations in hypertension awareness, treatment, and control must be considered to design targeted interventions for each step of the cascade.

Cost-Effectiveness and Cost-Benefit Analyses of Providing Menstrual Cups and Sanitary Pads to Schoolgirls in Rural Kenya.

Objective: To analyze the relative value of providing menstrual cups and sanitary pads to primary schoolgirls. Design: Cost-effectiveness and cost-benefit analyses of three-arm single-site open cluster randomized controlled pilot study providing menstrual cups or sanitary pads for 1 year. Participants: Girls 14-16 years of age enrolled across 30 primary schools in rural western Kenya. Methods: Cost-effectiveness analysis was conducted based on the health effects (reductions in disability-adjusted life years [DALYs]) and education effects (reductions in school absenteeism) of both interventions. The health and education benefits were separately valued and compared with relative program costs. Results: Compared with the control group, the cost of menstrual cups was estimated at $3,270 per year for 1000 girls, compared with $24,000 for sanitary pads. The benefit of the menstrual cup program (1.4 DALYs averted, 95% confidence interval [CI]: -4.3 to 3.1) was higher compared with a sanitary pad program (0.48 DALYs averted, 95% CI: -4.2 to 2.3), but the health effects of both interventions were not statistically significant likely due to the limited statistical power. Using point estimates, the menstrual cup intervention was cost-effective in improving health outcomes ($2,300/DALY averted). The sanitary pad intervention had a cost-effectiveness of $300/student-school year in reducing school absenteeism. When considering improvements in future earnings from reduced absenteeism, the sanitary pad program had a net benefit of +$68,000 (95% CI: -$32,000 to +$169,000). Conclusions: The menstrual cup may provide a cost-effective solution for menstrual hygiene management in low-income settings. This study outlines a methodology for future analyses of menstrual hygiene interventions and highlights several knowledge gaps that need to be addressed. Trial registration: ISRCTN17486946.

Blocking mitochondrial Zn2+ accumulation after ischemia reduces mitochondrial dysfunction and neuronal injury.

Zn2+ is an important contributor to ischemic brain injury and recent studies support the hypothesis that mitochondria are key sites of its injurious effects. In murine hippocampal slices (both sexes) subjected to oxygen glucose deprivation (OGD), we found that Zn2+ accumulation and its entry into mitochondria precedes and contributes to the induction of acute neuronal death. In addition, if the ischemic episode is short (and sublethal), there is ongoing Zn2+ accumulation in CA1 mitochondria after OGD that may contribute to their delayed dysfunction. Using this slice model of sublethal OGD, we have now examined Zn2+ contributions to the progression of changes evoked by OGD and occurring over 4-5 hours. We detected progressive mitochondrial depolarization occurring from ∼ 2 hours after ischemia, a large increase in spontaneous synaptic activity between 2-3 hours, and mitochondrial swelling and fragmentation at 4 hours. Blockade of the primary route for Zn2+ entry, the mitochondrial Ca2+ uniporter (MCU; with ruthenium red, RR) or Zn2+ chelation shortly after OGD withdrawal substantially attenuated the mitochondrial depolarization and the changes in synaptic activity. RR also largely reversed the mitochondrial swelling. Finally, using an in vivo rat (male) asphyxial cardiac arrest (CA) model of transient global ischemia, we found that ∼8 min asphyxia induces considerable injury of CA1 neurons 4 hours later that is associated with strong Zn2+ accumulation within many damaged mitochondria. These effects were substantially attenuated by infusion of RR upon reperfusion. Our findings highlight mitochondrial Zn2+ accumulation after ischemia as a possible target for neuroprotective therapy.SIGNIFICANCE STATEMENT:Brain ischemia is a leading cause of mortality and long-term disability that still lacks effective treatment. After transient ischemia delayed death of neurons occurs in vulnerable brain regions. There is a critical need to understand mechanisms of this delayed neurodegeneration which can be targeted for neuroprotection. We found progressive and long-lasting mitochondrial Zn2+ accumulation to occur in highly vulnerable CA1 neurons after ischemia. Here we demonstrate that this Zn2+ accumulation contributes strongly to deleterious events occurring after ischemia including mitochondrial dysfunction, swelling and structural changes. We suggest that this mitochondrial Zn2+ entry may constitute a promising target for development of therapeutic interventions to be delivered after termination of an episode of transient global ischemia.

Roles for community health workers in diabetes prevention and management in low- and middle-income countries.

Diabetes prevalence is increasing worldwide, especially in low- and middle-income countries (LMIC), posing the need for improved detection and management strategies. Chronic disease models and lifestyle medicine provide structures for action. Community health workers (CHWs) can significantly contribute to chronic disease care if they are trained and integrated into low-resource health systems. Although most current CHWs worldwide are performing maternal/child health and infectious disease-related tasks, other programs involving CHWs for noncommunicable disease prevention and management are increasing. In this article, we discuss the advantages, challenges, and questions regarding possible roles assigned to CHWs in the prevention and management of diabetes. These roles include performing simple screening tests, implementing lifestyle/behavioral interventions, and connecting patients with alternatives to biomedicine. Specifically, CHWs can aid diabetes epidemiological surveillance by conducting risk score-based screening or capillary glucose testing, and they can facilitate diabetes self-management by delivering interventions described in the transcultural diabetes nutrition algorithm. Furthermore, while this role has not formally been assigned, CHWs can leverage their intimate knowledge of local practices to provide decision-making support to patients in environments with pluralistic health systems. Ethnocultural differences in CHW functions and transcultural adaptations of their roles in diabetes care should also be considered. In summary, CHWs can improve diabetes care by screening high-risk individuals and implementing lifestyle interventions, especially in LMIC.

Roles for community health workers in diabetes prevention and management in low- and middle-income countries / O papel dos agentes comunitários de saúde na prevenção e manejo do diabetes em países de renda baixa e média / Roles de trabajadores comunitarios en salud para la prevención y gestión de la diabetes en países con medios y bajos ingresos

Diabetes prevalence is increasing worldwide, especially in low- and middle-income countries (LMIC), posing the need for improved detection and management strategies. Chronic disease models and lifestyle medicine provide structures for action. Community health workers (CHWs) can significantly contribute to chronic disease care if they are trained and integrated into low-resource health systems. Although most current CHWs worldwide are performing maternal/child health and infectious disease-related tasks, other programs involving CHWs for noncommunicable disease prevention and management are increasing. In this article, we discuss the advantages, challenges, and questions regarding possible roles assigned to CHWs in the prevention and management of diabetes. These roles include performing simple screening tests, implementing lifestyle/behavioral interventions, and connecting patients with alternatives to biomedicine. Specifically, CHWs can aid diabetes epidemiological surveillance by conducting risk score-based screening or capillary glucose testing, and they can facilitate diabetes self-management by delivering interventions described in the transcultural diabetes nutrition algorithm. Furthermore, while this role has not formally been assigned, CHWs can leverage their intimate knowledge of local practices to provide decision-making support to patients in environments with pluralistic health systems. Ethnocultural differences in CHW functions and transcultural adaptations of their roles in diabetes care should also be considered. In summary, CHWs can improve diabetes care by screening high-risk individuals and implementing lifestyle interventions, especially in LMIC.

A prevalência do diabetes está aumentando em nível global, sobretudo nos países de renda baixa e média, o que exige melhor detecção e manejo da doença. O modelo de doenças crônicas e a medicina de estilo de vida fornecem estruturas para a ação nesse sentido. Os agentes comunitários de saúde (ACS) podem contribuir de maneira significativa para a assistência às doenças crônicas, desde que sejam capacitados e integrados aos sistemas de saúde, que dispõem de recursos limitados. Embora a maioria dos ACS no mundo esteja desempenhando tarefas relacionadas à saúde materno-infantil e doenças infecciosas, estão crescendo outros programas que envolvem a prevenção e manejo das doenças não transmissíveis. O artigo discute as vantagens, desafios e questões relacionados aos possíveis papéis definidos para os ACS na prevenção e manejo do diabetes. Esses papéis incluem testes simples de triagem, implementação de intervenções comportamentais e de estilo de vida e recomendação de alternativas à biomedicina para os pacientes. Especificamente, os ACS podem auxiliar na vigilância epidemiológica do diabetes, realizando triagem baseada em pontuação de risco ou testagem de glicemia capilar, e podem facilitar o auto-manejo do diabetes através de intervenções baseadas no algoritmo nutricional transcultural do diabetes. Além disso, embora o papel não tenha sido definido formalmente, os ACS podem alavancar seu conhecimento íntimo das práticas locais para apoiar decisões pelos pacientes em contextos com sistemas de saúde pluralistas. Devem ser consideradas as diferenças etnoculturais nas funções dos ACS e nas adaptações transculturais de seus papéis durante a assistência ao diabetes. Em resumo, os ACS podem melhorar a assistência ao diabetes através da triagem e da implementação oportuna de intervenções de estilo de vida, principalmente nos países de renda baixa e média.

La prevalencia de diabetes está aumentando en todo el mundo, especialmente en los países de bajos y medios ingresos (LMIC por sus siglas en inglés), imponiendo la necesidad de una detección y gestión mejoradas. Un modelo de enfermedad crónica y la medicina del estilo de vida proporcionan estructuras para la acción. Los trabajadores comunitarios de salud (CHWs por sus siglas en inglés) pueden contribuir significativamente al cuidado de la enfermedad crónica, si son entrenados e integrados en sistemas con pocos recursos de salud. A pesar de que la mayoría de los actuales CHWs en todo el mundo están desarrollando tareas relacionadas con enfermedades infecciosas en la salud maternal/infantil, otros programas que implican a los CHWs para la prevención y gestión de enfermedades no comunicables están aumentando. En este artículo, discutimos las ventajas, desafíos, y preguntas respecto a los posibles roles asignados a los CHWs, en la prevención y gestión de la diabetes. Estos roles incluyen realizar simples pruebas de detección, implementando intervenciones de estilo de vida/comportamentales, y conectando pacientes con alternativas a la biomedicina. Específicamente, los CHWs pueden ayudar en la vigilancia epidemiológica de la diabetes, llevando a cabo pruebas de detección basadas en marcadores de riesgo o pruebas de glucosa capilares, y pueden facilitar el autocontrol de la diabetes proporcionando intervenciones descritas en el algoritmo transcultural de nutrición en diabetes. Asimismo, mientras este rol no se les haya asignado formalmente, los CHWs pueden potenciar su conocimiento profundo de prácticas locales para proporcionar apoyo en la toma de decisiones a pacientes en entornos con sistemas de salud plurales. Las diferencias etnoculturales en las funciones de los CHW y las adaptaciones transculturales de sus papeles en el cuidado de la diabetes deberían también ser consideradas. En resumen, los CHWs pueden mejorar el cuidado de la diabetes detectando e implementando oportunamente las intervenciones de estilo de vida, especialmente en LMIC.

Exploring the Health and Spatial Equity Implications of the New York City Bike Share System.

INTRODUCTION: This paper examines spatial equity and estimates the health impact of Citi Bike, New York City's (NYC) bike share system. We discuss how further system expansion and utilization by residents in high-poverty communities of color could affect the potential benefit of the largest bicycle share system in the United States. METHODS: First, we compared the Citi Bike station distribution by census tract poverty during the system's 2013 launch and after the 2015 geographic expansion. Second, we applied the World Health Organization's Health Economic Assessment Tool (HEAT) to estimate the benefit of cycling associated with annual Citi Bike members for two 12-month time periods and analyzed change of the benefit over time. RESULTS: The results showed that the greatest proportion of Citi Bike stations were located in low-poverty (wealthier) NYC census tracts (41% per period), and there were no significant changes in station distribution during expansion. HEAT estimated an increase from two to three premature deaths prevented and an increased annual economic benefit from $18,800,000 to $28,300,000 associated with Citi Bike use. CONCLUSION: In conclusion, although Citi Bike stations are not equitably located, the estimated annual health benefits are substantial and have increased over time. Our findings underscore the potential for even greater benefits with increased spatial access in higher-poverty neighborhoods and communities of color. Our findings highlight the importance of the built environment in shaping health and the need for a health equity lens to consider the social and political processes that perpetuate inequities.

The dynamics of electric powered wheelchair sideways tips and falls: experimental and computational analysis of impact forces and injury.

BACKGROUND: To reduce the occurrence of wheelchair falls and to develop effective protection systems, we aimed to quantify sideways tip and fall dynamics of electric power wheelchairs (EPWs). We hypothesized that driving speed, curb height and angle of approach would affect impact forces and head injury risk for wheelchair riders. We further expected that fall dynamics and head injury risk would be greater for unrestrained riders compared to restrained riders. METHODS: Sideways wheelchair tip and fall dynamics were reconstructed using a remotely operated rear wheel drive EPW and a Hybrid III test dummy driving at different approach angles (5 to 63°) over an adjustable height curb (0.30 to 0.41 m) at speeds of 0.6-1.5 m/s. Rigid body dynamics models (Madymo, TASS International, Livonia, MI) were developed in parallel with the experiments to systematically study and quantify the impact forces and the sideways tip or fall of an EPW user in different driving conditions. RESULTS: Shallower approach angles (25°) (p < 0.05) and higher curbs (0.4 m) (p < 0.05) were the most significant predictors of tipping for restrained passengers. Unrestrained passengers were most affected by higher curbs (0.4 m) (p < 0.005) and fell forward from the upright wheelchair when the approach angle was 60°. Head impact forces were greater in unrestrained users (6181 ± 2372 N) than restrained users (1336 ± 827 N) (p = 0.00053). Unrestrained users had significantly greater head impact severities than restrained users (HIC = 610 ± 634 vs HIC = 29 ± 38, p = 0.00013) and several tip events resulted in HICs > 1000 (severe head injury) in unrestrained users. CONCLUSIONS: Sideways tips and forward falls from wheelchairs were most sensitive to curb height and approach angle but were not affected by driving speed. Sideways tips and falls resulted in impact forces that could result in concussions or traumatic brain injury and require injury prevention strategies. Seat belts eliminated the risk of falling from an upright chair and reduced head impact forces in sideways wheelchair tips in this study; however, their use must be considered within the ethical and legal definitions of restraints.

Seropositivity of HBsAg, anti HCV and anti HIV among blood donors: a comparative study on three years of 5 years interval.

Blood safety comprises the provision of safe, adequate and quality blood components to the needy patients. A total of 6,179 donation were reviewed with 2377, 1561 and 2241 donations occurring in June to July in 1993, 1998 and 2003 respectively. Majority of the donors were males. 94.38% donors were in the age group of 18 - 45 years. The seropositivity of HBV infection declined over the three years but HCV and HIV infections showed an increase in 2003 following an initial decrease in 1998.

Indoor/outdoor relationships of carbon monoxide and oxides of nitrogen in domestic homes with roadside, urban and rural locations in a central Indian region.

UNLABELLED: Indoor air quality (IAQ) has been a matter of public concern these days whereas air pollution is normally monitored outdoors as part of obligations under the National air quality strategies. Much little is known about levels of air pollution indoors. Simultaneous measurements of indoor and outdoor carbon monoxide (CO) and oxides of nitrogen (NO and NO2) concentrations were conducted at three different environments, i.e. rural, urban and roadside in Agra, India, using YES - 205 multigas monitor during the winter season, i.e. October 2002-February 2003. A statistical correlation analysis of indoor concentration levels with outdoor concentrations was carried out. CO was maximum at roadside locations with indoor concentrations 2072.5 +/- 372 p.p.b. and outdoor concentrations 1220 +/- 281 p.p.b. (R2 = 0.005). Oxides of nitrogen were found maximum at urban site; NO concentration was 385 +/- 211 and 637 +/- 269 p.p.b. for indoors and outdoors respectively (R2 = 0.90792), where as NO2 concentration was 255 +/- 146 p.p.b. for indoors and 460 +/- 225 p.p.b. for outdoors (R2 = 0939464). Although indoor concentration at all the houses of the three sites have a positive correlation with outdoor concentration, CO variation indoors was very less due to outdoor sources. An activity schedule of inside and outside these homes were also prepared to see its influence and concentrations of pollutants. As standards for indoor air were not available for the Indian conditions these were compared with the known standards of other countries, where as outdoor concentrations were compared with the standards given by the Central Pollution Control board, which shows that indoor concentrations of both NO(x) and CO lie below permissible limits but outdoor concentrations of NO(x) cross the standard limits. PRACTICAL IMPLICATIONS: ''India currently bears the largest number of indoor air pollution (IAP) related health problems in world. An estimated 500,000 women & children die in India each year due to IAP-related cause--this is 25% of estimated IAP-related deaths worldwide. This study will be useful for policy makers, health related officials, academicians and Scientists who have interest in countries of developing world''.

Reliable and sensitive analysis of occult bone marrow metastases using automated cellular imaging.

The presence of occult bone marrow metastases (OM) has been reported to represent an important prognostic indicator for patients with operable breast cancer and other malignancies. Assaying for OM most commonly involves labor-intensive manual microscopic analysis. The present report examines the performance of a recently developed automated cellular image analysis system (ACIS; ChromaVision Medical Systems, Inc.) for identifying and enumerating OM in human breast cancer specimens. OM analysis was performed after immunocytochemical staining. Specimens used in this study consisted of normal bone marrow (n = 10), bone marrow spiked with carcinoma cells (n = 20), and bone marrow obtained from breast cancer patients (n = 39). The reproducibility of ACIS-assisted analysis for tumor cell detection was examined by having a pathologist evaluate montage images generated from multiple ACIS runs of five specimens. Independent ACIS-assisted analysis resulted in the detection of an identical number of tumor cells for each specimen in all instrument runs. Additional studies were performed to analyze OM from 39 breast cancer patients with two pathologists performing parallel analysis using either manual microscopy or ACIS-assisted analysis. In 17 of the 39 cases (44%), specimens were classified by the pathologist as positive for tumor cells after ACIS-assisted analysis, whereas the same pathologist failed to identify tumor cells on the same slides after analysis by manual microscopy. These studies indicate that the ACIS-assisted analysis provides excellent sensitivity and reproducibility for OM detection, relative to manual microscopy. Such performance may enable an improved approach for disease staging and stratifying patients for therapeutic intervention.

Is a significant socio-economic structural change a pre-requisite for "inital" fertility decline in the LDCs? Evidence from Thailand based on a multivariate cointegration / vector error correction modelling approach.

PIP: This study is a first attempt at placing the analysis of fertility in a temporal dynamic framework in the case of a developing Asian economy like Thailand by binding the relationship between fertility and its determinants within a cointegrated system. In this respect, the focus of this paper is to shed light on whether a significant socioeconomic structural transition is a requirement to ensure initial fertility decline. The analysis is based on the application of the dynamic time series techniques: cointegration, vector-error correction modeling, variance decompositions, and impulse response functions. The findings tend to suggest that in the complex dynamic interactions, the importance of the conventional structural hypothesis as a significant factor in reducing fertility in the longer term cannot be denied. However, in the short to longer term, the results, although not fully supportive of any particular hypothesis, appear to be broadly consistent with the hypothesis highlighting the critical role of ideational or diffusion forces along the demographic factors in ensuring initial fertility decline than with the structural hypothesis emphasizing a significant socioeconomic structural change as a prerequisite for initial decline in fertility.^ieng

Soft tissue Langerhans' cell histiocytosis in an adult. A case presentation with flow cytometric analysis and literature review.

We report a case of solitary unifocal Langerhans' cell histiocytosis presenting as a large lower extremity soft tissue mass in a 48-year-old white man. Radiologically, this was an infiltrating mass involving all compartments of the right thigh; the mass had a maximum diameter of 18 cm. Extensive evaluation revealed no evidence of involvement of any other organ. An incisional biopsy was performed under the presumptive clinical impression of sarcoma. A definitive diagnosis of Langerhans' cell histiocytosis was established on the basis of characteristic morphologic features, cell surface marker findings by immunohistochemistry and flow cytometry, and electron microscopic studies. The patient was treated with four courses of chemotherapy, (etoposide and prednisone) and had no evidence of disease 3 years after the initial presentation. A review of the literature revealed that soft tissue Langerhans' cell histiocytosis usually presents in the head and neck area of children and usually has associated bone, lung, or reticuloendothelial system involvement. To our knowledge, this is the first reported case of solitary Langerhans' cell histiocytosis in an adult in which the presentation mimicked sarcoma.

Global aphasia due to thalamic hemorrhage: a case report and review of the literature.

A 55-year-old patient was admitted with weakness in the right extremities and with significant language deficits. Both computed tomography (CT) and positron-emission tomography (PET) using 2-fluoro-2-deoxy-D-glucose were done within 1 month and repeated at 10 months after onset. Language evaluation was done using parts of the Western Aphasia Battery (WAB) and the Boston Diagnostic Aphasia Examination (BDAE) at 1 month after admission, at 3 months, and at 10 months. The initial CT scan revealed hemorrhage in the left thalamus with edema surrounding the hemorrhage. A follow-up CT scan after 10 months showed an old hemorrhage in the left thalamus with no new lesions. The initial PET scan revealed hypometabolism in the left thalamus, and a repeat PET scan at 10 months showed reduced uptake in the left frontal, left parietal, and left temporal cortex. An initial language evaluation showed impaired auditory and reading comprehension, poor verbal expression, impaired repetition, and difficulty with naming and with sentence completion. The patient was diagnosed with global aphasia. Follow-up language evaluation at 3 months and 10 months showed only minimal improvement in his communication. Global aphasia due to lesions in the thalamic region is rare and the prognosis is poor.

CD5-expressing B-cell non-Hodgkin's lymphomas with bcl-1 gene rearrangement have a relatively homogeneous immunophenotype and are associated with an overall poor prognosis.

Mantle cell lymphomas (MCLs) are typically CD5-expressing B-cell non-Hodgkin's lymphomas (NHLs) that frequently harbor the chromosomal translocation t(11;14) or bcl-1 gene rearrangements. Insufficient data are available on the biologic features and clinical behavior of rigorously characterized MCL. As these NHLs have been reported to exhibit various histologic and cytologic expressions, and in order to avoid using somewhat arbitrary and subjective morphologic definitions, we chose to study cases of MCL selected on more objective grounds. Specifically, 15 samples (from 14 patients) of CD5-expressing B-cell NHLs with detectable bcl-1 gene rearrangement were included. Overall, these patients had relatively uniform clinical manifestations. Most were older men (mean age, 67 years) who presented with lymphadenopathy, high-stage disease, and bone marrow involvement. All but two patients relapsed, demonstrated residual tumor, or had disease progression after an initial response to various therapies. Nine patients have died; these patients had a median survival of only 19 months. All cases could be classified within the broad morphologic spectrum previously described for MCL, and no predominant histologic subtype was observed. However, cases could be segregated into two major groups according to tissue architecture: one with a purely diffuse pattern and the other with at least a focal nodular component. Patients with purely diffuse tumors had a lower survival rate (0%) than those with tumors having a nodular component (62% survival rate). In contrast to the morphologic variability, these NHL exhibited a rather homogeneous immunophenotypic pattern. All cases demonstrated intense CD20 expression, with typically intense IgM and light chain expression, and relatively weak IgD expression. In no case was CD10 detected on the neoplastic cells. DNA content analysis showed aneuploidy only in three instances, and two groups of cases could be arbitrarily defined on the basis of their S-phase fraction. A relationship between a purely diffuse growth pattern and a high S-phase fraction (greater than 5%) was observed. As expected from this association, patients with tumors having high S-phase fractions fared worse (14% survival rate) than those patients with tumors showing lower S-phase fractions (57% survival rate). Thirteen NHLs from 12 patients had amplifiable bcl-1 gene rearrangements at the major translocation cluster (MTC). The bcl-1 breakpoints aggregated within a 63-bp region of the MTC, and the amplified tumor DNA from each patient had unique N-nucleotide junctional sequences and Ig joining region breakpoint sites.(ABSTRACT TRUNCATED AT 400 WORDS)

T-cell-rich B-cell lymphoma. A clinicopathologic study of eight cases.

Although T-cell-rich B-cell lymphoma (TCRBCL) is a recently recognized form of non-Hodgkin's lymphoma (NHL), limited information regarding its incidence, cellular origin, morphologic spectrum, and biologic behavior is currently available. In this study, the clinicopathologic features of eight patients with TCRBCL are presented. This neoplasm comprised about 1% of all NHLs seen at Emory University Hospital over 2 years. The male-to-female ratio was 1.6, and the mean age at diagnosis was 60 years. At presentation, TCRBCL was nodal in 88% of the patients and widely disseminated in 50% of the patients. A complete remission was seen in three of the five patients treated with combination chemotherapy that was directed at intermediate grade NHL. Three patients received inadequate or incomplete chemotherapy. One of these patients later achieved a complete remission with more intensive therapy. Two of the patients were not evaluable for response to therapy. The actuarial and disease-free survival rates of the group at 5 years were 72% and 21%, respectively. Morphologically, the lymph nodes in seven of eight cases were diffusely obliterated, whereas one had markedly expanded interfollicular zones that lead to an initial diagnosis of T-zone lymphoma. All tumors were characterized by no more than 25% large lymphoid cells, which were scattered in a background of small lymphocytes with round or irregular nuclei. The presence of numerous histiocytes imparted a lymphoepithelioid appearance in two cases. Although immunoperoxidase stains of frozen tissue were initially suggestive of a peripheral T-cell lymphoma in some cases, paraffin immunoperoxidase stains clearly established the B-cell nature of the large cells, whereas most of the small cells were T lymphocytes. The clonal nature of the large cells was confirmed in seven cases by monotypic immunoglobulin (Ig) light chain restriction or Ig gene rearrangements. Epstein-Barr virus genomic DNA was detected in two of the six cases tested by polymerase chain reaction or Southern blot analysis, but no evidence of a bcl-2 rearrangement was found in any of the five cases examined. These findings indicate that TCRBCL is an uncommon form of NHL with a therapeutic response and overall survival consistent with intermediate grade lymphoma. Paraffin immunoperoxidase stains and occasionally genotypic analysis are required to exclude the diagnosis of PTCL or diffuse lymphocyte predominant Hodgkin's disease. The authors found no morphologic or molecular evidence to support a follicular center cell origin in these cases of TCRBCL.

Optimal primer selection for clonality assessment by polymerase chain reaction analysis: I. Low grade B-cell lymphoproliferative disorders of nonfollicular center cell type.

Recent polymerase chain reaction (PCR)-based studies focused on the detection of immunoglobulin heavy chain gene (IgH) rearrangements have suggested that clonal populations may be amplified more easily from certain categories of B-cell neoplasia than others and that primer makeup can be a critical factor in successful amplification. However, these particular reports contained relatively few low grade B-cell lymphoproliferative disorders of nonfollicular center cell type (LG-BLPD) and used only a limited panel of available primer sets for PCR amplification of monoclonal B-cell populations. To address this issue more extensively we evaluated 156 samples of LG-BLPD by the PCR to determine optimal primer selection in this setting. All cases were classified according to standard morphological and immunophenotypic criteria, with monoclonality documented by Ig light chain restriction analysis. The LG-BLPD included 33 cases of chronic lymphocytic leukemia (CLL), 57 cases of small lymphocytic lymphoma (SLL), 10 cases of atypical CLL, 32 cases of mantle cell lymphoma (MCL), 17 plasma cell neoplasms (PCNs), and seven cases of hairy cell leukemia (HCL). All primer sets included a 3' IgH joining region consensus primer, whereas the 5' IgH variable region (VH) primer was different in each set. The first-line panel included the following: Set 1, VH-framework III consensus primer, and Set 2, seven separate VH-framework I family-specific primers. A reserve panel of alternate VH consensus primers directed at framework II or III regions was used only when Set 1 showed no evidence of B-cell monoclonality.(ABSTRACT TRUNCATED AT 250 WORDS)

Response to radiation in chemotherapy-refractory monocytoid B-cell lymphoma: a case report.

A 39-year-old man had monocytoid lymphoma including a large retroperitoneal mass, retrocrural and porta hepatic adenopathy with localized pain, but no B symptoms. The tumor did not respond clinically or radiographically to CHOP or mini-ICE chemotherapy but has responded dramatically to radiotherapy. The patient's disease remains controlled 3 years after treatment. This case documents radioresponsiveness in a chemotherapy-refractory monocytoid lymphoma.

Intravascular (angiotropic) large cell lymphoma: determination of monoclonality by polymerase chain reaction on paraffin-embedded tissues.

Angiotropic lymphoma is a rare, aggressive, intravascular non-Hodgkin's lymphoma, usually of B-cell phenotype. Because lymphoma is often clinically unsuspected, the small skin or muscle biopsies typically obtained for evaluation make assessment of lymphoid clonality through cell surface markers or Southern blot hybridization analysis difficult or impossible. The recent development of polymerase chain reaction methodologies to detect chromosomal translocations and immunoglobulin heavy chain gene rearrangement on paraffin-embedded tissue offers an attractive alternative for ascertaining the clonality of lymphoproliferative processes. We report a case of B-cell angiotropic lymphoma in which a monoclonal variable diversity joining region rearrangement of the immunoglobulin heavy chain locus was detected by polymerase chain reaction in both ante- and postmortem, formalin-fixed, paraffin-embedded skeletal muscle. The use of polymerase chain reaction in assessing clonality in angiotropic lymphoma is enhanced by the general absence of a background of reactive B-lymphoid cells in angiotropic lymphoma, which can obscure the monoclonal band and/or compromise sensitivity. No amplification product was obtained for t(14;18) involving the bcl-2 major breakpoint region. It is interesting to note that this case exhibited rare circulating lymphoma cells and more extensive bone marrow involvement (more than 100 tumor cells/high magnification field) than has been previously described.

Antigen expression and polymerase chain reaction amplification of mantle cell lymphomas.

Flow immunophenotyping, DNA content analysis, and polymerase chain reaction (PCR) amplification for t(11;14) and t(14;18) were performed on 11 cases of typical mantle cell lymphoma (MCL), 5 cases of apparent MCL with proliferation centers (MCL-PC), and 5 cases of small lymphocytic lymphoma (SLL). Immunophenotyping showed IgM (P < .001), Ig light (P < .001), and CD20 (P < .001) expression to be more intense in MCL than in SLL. In MCL-PC, the mean intensity of IgM, Ig light chain, and CD20 expression was intermediate to the intensities observed in MCL and SLL. Furthermore, in contrast to SLL, all MCL and 4 of 5 MCL-PC cases exhibited stronger CD20 than CD19 expression. CD10 expression was not observed in any case and CD5 expression was present in all SLL and MCL-PC cases and in 9 of 11 MCL cases. DNA content analysis showed an S-phase fraction of less than 3% in all cases studied and, except for 1 MCL case, all lymphomas were DNA diploid. The t(11;14) breakpoint junctions involving the bcl-1 major translocation cluster were amplified by PCR in 4 of 11 (36%) MCL cases and in none of the MCL-PC or SLL cases. The t(14;18) involving the bcl-2 major breakpoint region was not identified by PCR in any case. We conclude that the level of expression of surface antigens and the rapid detection of t(11;14) by PCR are potentially useful for distinguishing MCL and SLL in the clinical setting. Further investigations as to the biologic relationship between MCL, MCL-PC, and SLL, and the utility of t(11;14) PCR in these lymphomas are warranted.