scholarly journals Fibropapillomatosis and the Chelonid Alphaherpesvirus 5 in Green Turtles from West Africa

EcoHealth ◽  
2021 ◽  
Author(s):  
Jessica Monteiro ◽  
Margarida Duarte ◽  
Kidé Amadou ◽  
Castro Barbosa ◽  
Nahi El Bar ◽  
...  
Keyword(s):  
West Africa ◽  
Real Time Pcr ◽  
Anthropogenic Activities ◽  
Normal Skin ◽  
Aetiological Agent ◽  
Multifactorial Disease ◽  
Green Turtles ◽  
Guinea Bissau ◽  
Vital Functions ◽  
Over Time

AbstractFibropapillomatosis (FP) is a tumorigenic panzootic disease of sea turtles, most common in green turtles (Chelonia mydas). FP is linked to the chelonid alphaherpesvirus 5 (ChAHV5) and to degraded habitats and, though benign, large tumours can hinder vital functions, causing death. We analyse 108 green turtles, captured in 2018 and 2019, at key foraging grounds in Guinea-Bissau and Mauritania, West Africa, for the presence of FP, and use real-time PCR to detect ChAHV5 DNA, in 76 individuals. The prevalence of FP was moderate; 33% in Guinea-Bissau (n = 36) and 28% in Mauritania (n = 72), and most turtles were mildly affected, possibly due to low human impact at study locations. Juveniles had higher FP prevalence (35%, n = 82) compared to subadults (5%, n = 21), probably because individuals acquire resistance over time. ChAHV5 DNA was detected in 83% (n = 24) of the tumour biopsies, consistent with its role as aetiological agent of FP and in 26% (n = 27) of the ‘normal’ skin (not showing lesions) from FP turtles. Notably, 45% of the asymptomatic turtles were positive for ChAHV5, supporting multifactorial disease expression. We report the first baselines of FP and ChAHV5 prevalence for West Africa green turtles, essential to assess evolution of disease and future impacts of anthropogenic activities.

Language Change and Movement as Seen by Historical Linguistics

2018 ◽  
Author(s):  
Derek Nurse
Keyword(s):  
West Africa ◽  
20Th Century ◽  
Language Change ◽  
Historical Linguistics ◽  
Linguistic Features ◽  
Time And Space ◽  
Change Over Time ◽  
Comparative Linguistics ◽  
Language Boundaries ◽  
Over Time

The focus of this chapter is on how languages move and change over time and space. The perceptions of historical linguists have been shaped by what they were observing. During the flowering of comparative linguistics, from the late 19th into the 20th century, the dominant view was that in earlier times when people moved, their languages moved with them, often over long distances, sometimes fast, and that language change was largely internal. That changed in the second half of the 20th century. We now recognize that in recent centuries and millennia, most movements of communities and individuals have been local and shorter. Constant contact between communities resulted in features flowing across language boundaries, especially in crowded and long-settled locations such as most of Central and West Africa. Although communities did mix and people did cross borders, it became clear that language and linguistic features could also move without communities moving.

scholarly journals Wealth-related inequalities in demand for family planning satisfied among married and unmarried adolescent girls and young women in sub-Saharan Africa

2021 ◽  
Vol 18 (S1) ◽  
Author(s):  
Martin K. Mutua ◽  
Yohannes D. Wado ◽  
Monica Malata ◽  
Caroline W. Kabiru ◽  
Elsie Akwara ◽  
...  
Keyword(s):  
Family Planning ◽  
West Africa ◽  
Adolescent Girls ◽  
Young Women ◽  
Rate Of Change ◽  
Sub Saharan Africa ◽  
Demographic And Health Surveys ◽  
Sexually Active ◽  
Sub Saharan ◽  
Over Time

Abstract Background The use of modern contraception has increased in much of sub-Saharan Africa (SSA). However, the extent to which changes have occurred across the wealth spectrum among adolescents is not well known. We examine poor-rich gaps in demand for family planning satisfied by modern methods (DFPSm) among sexually active adolescent girls and young women (AGYW) using data from national household surveys. Methods We used recent Demographic and Health Surveys and Multiple Indicator Cluster Surveys to describe levels of wealth-related inequalities in DFPSm among sexually active AGYW using an asset index as an indicator of wealth. Further, we used data from countries with more than one survey conducted from 2000 to assess DFPSm trends. We fitted linear models to estimate annual average rate of change (AARC) by country. We fitted random effects regression models to estimate regional AARC in DFPSm. All analysis were stratified by marital status. Results Overall, there was significant wealth-related disparities in DFPSm in West Africa only (17.8 percentage points (pp)) among married AGYW. The disparities were significant in 5 out of 10 countries in Eastern, 2 out of 6 in Central, and 7 out of 12 in West among married AGYW and in 2 out of 6 in Central and 2 out of 9 in West Africa among unmarried AGYW. Overall, DFPSm among married AGYW increased over time in both poorest (AARC = 1.6%, p < 0.001) and richest (AARC = 1.4%, p < 0.001) households and among unmarried AGYW from poorest households (AARC = 0.8%, p = 0.045). DPFSm increased over time among married and unmarried AGYW from poorest households in Eastern (AARC = 2.4%, p < 0.001) and Southern sub-regions (AARC = 2.1%, p = 0.030) respectively. Rwanda and Liberia had the largest increases in DPFSm among married AGYW from poorest (AARC = 5.2%, p < 0.001) and richest (AARC = 5.3%, p < 0.001) households respectively. There were decreasing DFPSm trends among both married (AARC = − 1.7%, p < 0.001) and unmarried (AARC = − 4.7%, p < 0.001) AGYW from poorest households in Mozambique. Conclusion Despite rapid improvements in DFPSm among married AGYW from the poorest households in many SSA countries there have been only modest reductions in wealth-related inequalities. Significant inequalities remain, especially among married AGYW. DFPSm stalled in most sub-regions among unmarried AGYW.

scholarly journals Notes on Marine Algae Collected in Guinea-Bissau, Tropical West Africa

2002 ◽  
Vol 45 (4) ◽  
Author(s):  
M. C. M. Welten ◽  
P. A. J. Audiffred ◽  
W. F. Prud'homme van Reine
Keyword(s):  
West Africa ◽  
Marine Algae ◽  
Guinea Bissau

Child survival in children born to HIV-2 infected women in Guinea-Bissau, West Africa

Acta Tropica ◽  
1999 ◽  
Vol 72 (3) ◽  
pp. 309-315 ◽  
Author(s):  
H. Norrgren ◽  
A. Fonseca ◽  
S. Andersson ◽  
F. Dias ◽  
A. Nauclér ◽  
...  
Keyword(s):  
West Africa ◽  
Child Survival ◽  
Guinea Bissau

Cutis Tricolor

2018 ◽  
Vol 16 (05) ◽  
pp. 276-281
Author(s):  
Martino Ruggieri ◽  
Agata Polizzi ◽  
Selene Mantegna ◽  
Chiara Battaglini ◽  
Concetta Pirrone ◽  
...  
Keyword(s):  
Normal Skin ◽  
Distinct Type ◽  
Skin Lesions ◽  
Nasal Bridge ◽  
Phacomatosis Pigmentovascularis ◽  
Skeletal Defects ◽  
Skin Abnormalities ◽  
Vertebral Defects ◽  
Postzygotic Mutations ◽  
Over Time

AbstractCutis tricolor is a skin abnormality consisting in a combination of congenital hyper- and hypopigmented skin lesions (in the form of paired macules, patches, or streaks) in close proximity to each other in a background of normal skin. It is currently regarded as a twin-spotting (mosaic) phenomenon. This phenomenon has been reported so far as a purely cutaneous trait, as a part of a complex malformation phenotype (Ruggieri–Happle syndrome), which includes distinct facial features, cataract, skull and vertebral defects, long bones dysplasia, corpus callosum, cerebellar and white matter anomalies, cavum vergae and holoprosencephaly, and other systemic abnormalities. Cutis tricolor has been also reported as a distinct type with multiple, disseminated smaller skin macules (cutis tricolor parvimaculata) or in association with other skin disturbances (e.g., phacomatosis achromico-melano-marmorata) or in the context of other neurocutaneous phenotypes (e.g., ataxia-telangiectasia and phacomatosis pigmentovascularis) or as a sign of complex malformation phenotypes (e.g., microcephaly and dwarfism). More than 20 studies reporting 40 cases are present in the literature with pure cutaneous or syndromic cutis tricolor phenomena and are analyzed in the present study, confirming and expanding the overall phenotype of cutis tricolor. In particular, (1) the skin abnormalities of the cutis tricolor do not evolve over time; (2) there is a typical facial phenotype with long, elongated face, thick and brushy eyebrows, hypertelorism, deep nasal bridge with large bulbous nose, and anteverted nostrils; (3) the skeletal defects are mild-to-moderate and do not progress or cause relevant orthopedic complications; (4) the neurological/behavioral phenotype does not progress and the paroxysmal events (if present) tend to decrease over time; (5) only three patients developed early onset (treatable) cataracts. Different pathologic hypotheses have been postulated, including, early or late postzygotic mutations involving the same gene loci (in the context of the so-called dydymotic theory): such mechanisms can explain the overall skin, bone, lens, and nervous system phenomena of migration of different streaks of clones in the different tissues.

Introduction

2013 ◽  
Author(s):  
Noel Maurer
Keyword(s):  
United States ◽  
Latin America ◽  
West Africa ◽  
Institutional Reform ◽  
The United States ◽  
American Government ◽  
Foreign Investors ◽  
The U.S ◽  
Over Time

This introductory chapter discusses the shift from politicized confrontations like the imbroglio of 1900 to legalized disputes like the more orderly affair of 2007. It advances four basic findings. First, American government intervention on behalf of U.S. foreign investors was astoundingly successful at extracting compensation through the 1980s. Second, American domestic interests trumped strategic concerns again and again, for small economic gains relative to the U.S. economy and the potential strategic losses. Third, the United States proved unable to impose institutional reform in Latin America and West Africa even while American agents were in place. Finally, the technology that the U.S. government used to protect American property rights overseas changed radically over time.

Guinea

2020 ◽  
Author(s):  
Marius Schneider ◽  
Vanessa Ferguson
Keyword(s):  
West Africa ◽  
Sierra Leone ◽  
Ivory Coast ◽  
Official Language ◽  
The South ◽  
Guinea Bissau ◽  
The North

Guinea, also sometimes referred as Guinea-Conakry, is found in West Africa. It is bordered by Guinea-Bissau, Senegal, and Mali in the north and Sierra Leone, Liberia, and Ivory Coast in the south. In 2016, Guinea had a population of 12.6 million over a territory of 245 860 square kilometres (km). Its capital and largest city is Conakry. The official language of Guinea is French, and the currency used is the Guinean franc (GNF).

Sign in / Sign up

Export Citation Format

Share Document