The rise in antimicrobial resistance increases researchers’ interest </span><span style="font-family:Verdana;">in</span><span style="font-family:Verdana;"> medicinal plants...The rise in antimicrobial resistance increases researchers’ interest </span><span style="font-family:Verdana;">in</span><span style="font-family:Verdana;"> medicinal plants used for traditional treatment of infectious diseases. The study is based on ten (10) medicinal plants mostly cited in the treatment of diarrhea in West Africa: </span><span style="font-family:Verdana;"><i></span><i><span style="font-family:Verdana;">Khaya senegalensis</span></i><span style="font-family:""><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Anacardium ouest</span></i></span><span style="font-family:Verdana;"></i></span><span style="font-family:Verdana;"> L., </span><span style="font-family:Verdana;"><i></span><i><span style="font-family:Verdana;">Cassia sieberiana</span></i><span style="font-family:Verdana;"></i></span><span style="font-family:Verdana;"> DC., </span><span style="font-family:Verdana;"><i></span><i><span style="font-family:Verdana;">Pterocarpus erinaceus</span></i><span style="font-family:""><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Diospyros mespiliformis</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Ocimum gratissimum</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Manihot esculenta</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Vernonia amygdalina Delile</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Pseudocedrela kotschyi</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Daniellia oliveri</span></i></span><span style="font-family:Verdana;"></i></span><span style="font-family:Verdana;">. The objective is to make a review on ethnopharmacological, pharmacological, toxicological and chemical data that enhance these medicinal plants in the fight against diarrheal infections. Specific keywords were used for bibliographic rese展开更多
Background: Bacterial meningitis is an inflammation of the meninges caused mainly by three bacterial species Neisseria meningitidis, Streptococcus pneumoniae and Haemophilus influenzae that are transmitted by nasophar...Background: Bacterial meningitis is an inflammation of the meninges caused mainly by three bacterial species Neisseria meningitidis, Streptococcus pneumoniae and Haemophilus influenzae that are transmitted by nasopharyngeal secretions emitted by carriers. Meningitis is a public health problem in Benin, like all countries in the African meningitis belt. This study aims to analyze the epidemiological surveillance data of meningitis in Benin from 2016 to 2018. Methods: Each suspect case of meningitis was recorded and Cerebrospinal Fluid (CSF) samples were collected. CSF collection was accompanied by the Integrated Disease Surveillance and Response form. This sheet provides information on the patient’s social-demographic and epidemiological data. CSF specimens were sent to the laboratory for analysis and identification (Gram stain, biochemical parameters, and latex agglutination test) of pathogens according to the WHO standards. Results: Of the 2992 patients with suspected meningitis, 2893 were hospitalized with a death rate of 9.4% (281/2992). The sex ratio of registered patients was 1.29 in favor of men. The median age was 4 years (min: 0;max: 90). Patients younger than five years were the most represented (44.8%). During the study period, there was a decrease in the incidence of meningitis per 100,000 inhabitants (6.3 to 3.2 from 2016 to 2018). Of 2928 CSF samples collected we were able to identify 899 pathogenic bacterial species. The most represented species are S. pneumoniae (63.4%), N. meningitidis (24.4%) and H. influenzae (12.2%). Conclusion: The burden of disease is disproportionate in the northern departments as in others. The frequency of bacterial meningitis in the northern region increased during the study period. However, deaths have been recorded in the departments of the South (“Atlantic”, “Plateau”). This suggests an improvement in epidemiological surveillance and case management throughout the national territory.展开更多
One of plant-based products for dental care is plant-based proteolytic enzymes which are principally proteases. In order not to damage the protein and bioactive content, an efficient method should be employed for thei...One of plant-based products for dental care is plant-based proteolytic enzymes which are principally proteases. In order not to damage the protein and bioactive content, an efficient method should be employed for their purifications. As such, three-phase partitioning (TPP) was used to purify protease from moringa (Moringa oleifera). TPP is an emerging, promising, non-chromatographic and economical technology which is simple, quick, efficient and often one-step process for the separation and purification of bioactive molecules from natural sources. It involves the addition of salt (ammonium sulphate) to the crude extract followed by the addition of an organic solvent (butanol). The protein appears as an interfacial precipitate between upper organic solvent and lower aqueous phases. The various conditions such as ammonium sulphate, ratio of crude extract to t-butanol and pH which are required for attaining efficient purification of the protease fractions were optimized. Under optimized conditions, it was seen that, 35% of ammonium sulphate saturation with 1:0.75 ratio of crude extract to t-butanol at pH 7 gave 4.94-fold purification with 96.20% activity yield of protease in the middle phase of the TPP system. The purified enzyme from Moringa oleifera has no antimicrobial effect on the pathogenic bacteria tested. However, this purified enzyme, can be considered as a promising agent, cheap, and safe source which is suitable for using in various industries.展开更多
Introduction: In the North-Benin, there are three agents causing pediatric purulent meningitis outside the neonatal period. These are: Streptococcus pneumoniae, Neisseria meningitidis and Haemophilus influenzae type b...Introduction: In the North-Benin, there are three agents causing pediatric purulent meningitis outside the neonatal period. These are: Streptococcus pneumoniae, Neisseria meningitidis and Haemophilus influenzae type b. The aim of this research work was to investigate bacteria serotypes that caused childhood purulent meningitis in the pediatric unit of the Borgou à Regional University Teaching Hospital (CHUD-Borgou) located in Parakou (North-Benin). Patients and Methods: Through a prospective and descriptive study centered on children aged 0 to 5 years old suspected of meningitis and hospitalized, the cerebrospinal fluid (CSF) samples of those children were analyzed at the WHO reference laboratory in Banjul for serotyping by real time polymerase chain reaction (RT/PCR). Results: Among the 1396 children hospitalized during that period, 366 were suspected of meningitis and had benefitted from lumbar puncture. Among those 366 suspected cases, 51 cases of purulent meningitis were confirmed after CSF cytobacteriological and biochemical test at the CHUD-Borgou laboratory. Among 51 CSF samples in which purulent meningitis was confirmed, 44 were sent to Banjul. In addition, 310 CSF samples from non-confirmed cases of meningitis were also sent to Banjul. In the whole set of samples sent for real time PCR, 151 cases of Streptococcus pneumoniae (42.7%) were found, 5 cases of Neisseria meningitidis (1.4%) and 1 case of Haemophilus influenzae (0.3%) were also encountered. As regards Streptococcus pneumonia, the serotypes encountered were: 1, 3, 4, 5, 7F, 8, 9V, 9V/9A, 9N/9L, 14, 18C, 19A, 23F, 33F as well as non typed and non typable serotypes. As for Neisseria meningitidis, only serogroup A was found in it. For Haemophilus influenzae, only serotype b was identified. Conclusion: Four non vaccine serotypes (8, 9V/9A, 9N/9L and 33F), non typed and non typable serotypes which are not covered by 13-valent pneumococcal conjugate vaccine (PCV 13) were identified. This highlights the need to enhance surveillance of pediatric purulen展开更多
Healthcare-associated infections (HCAIs) remain a major public health concern. The aim of this study was to characterize potential pathogenic bacteria isolated in high-risk infectious services at the University Hospit...Healthcare-associated infections (HCAIs) remain a major public health concern. The aim of this study was to characterize potential pathogenic bacteria isolated in high-risk infectious services at the University Hospital Center of Suru-Léré in Benin. A cross-sectional, descriptive study was carried out on 215 samples with 8 air samples, 20 hand samples and 187 samples of medical-technical material. Genes for resistance to <i>β</i>-lactam antibiotics (blaTEM, blaSHV, blaCTX-M and blaOXA-1) were sought. The data were processed and analyzed using EPI Info version 3.5.4 software. A total of 10 bacterial species were identified. Of the 319 bacterial strains identified, <i>Staphylococcus saprophyticus</i>, <i>Staphylococcus aureus</i> and <i>Enterococcus faecalis</i> were predominant at 20.06%, 17.87% and 11.28% respectively. Antibiotic susceptibility showed that the majority of bacterial strains were multidrug-resistant. Of the 4 resistance genes sought, only the blaTEM and blaSHV genes were found. The poor microbiological quality observed in high-risk infectious services could be a risk factor for healthcare-associated infections. It is therefore useful to implement preventive measures in order to prevent or reduce the risk of healthcare-associated infections.展开更多
Urinary tract infections remain the most common bacterial infection in human population. They are also one of the most frequently occurring nosocomial infections, representing about 40% of all nosocomial bacterial inf...Urinary tract infections remain the most common bacterial infection in human population. They are also one of the most frequently occurring nosocomial infections, representing about 40% of all nosocomial bacterial infections world widely and associated with important medical and financial implications. This retrospective study aimed to establish the bacterial profile of UTIs in Benin. Therefore, reported data were collected from 2003 to 2012 at Menontin’s Hospital in Cotonou and subjected to analyses. At the end of the study, fourteen different bacteria species were found to be associated with UTI cases in Benin. Escherichia coli was the most prevalent followed by Staphylococcus aureus. Results of the current study are helpful to the health care community of Benin in establishing the appropriate antibiotherapy for UTI patients’ treatment with respect organisms into circulation.展开更多
文摘The rise in antimicrobial resistance increases researchers’ interest </span><span style="font-family:Verdana;">in</span><span style="font-family:Verdana;"> medicinal plants used for traditional treatment of infectious diseases. The study is based on ten (10) medicinal plants mostly cited in the treatment of diarrhea in West Africa: </span><span style="font-family:Verdana;"><i></span><i><span style="font-family:Verdana;">Khaya senegalensis</span></i><span style="font-family:""><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Anacardium ouest</span></i></span><span style="font-family:Verdana;"></i></span><span style="font-family:Verdana;"> L., </span><span style="font-family:Verdana;"><i></span><i><span style="font-family:Verdana;">Cassia sieberiana</span></i><span style="font-family:Verdana;"></i></span><span style="font-family:Verdana;"> DC., </span><span style="font-family:Verdana;"><i></span><i><span style="font-family:Verdana;">Pterocarpus erinaceus</span></i><span style="font-family:""><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Diospyros mespiliformis</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Ocimum gratissimum</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Manihot esculenta</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Vernonia amygdalina Delile</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Pseudocedrela kotschyi</span></i><span style="font-family:Verdana;">,</span><i><span style="font-family:Verdana;"> Daniellia oliveri</span></i></span><span style="font-family:Verdana;"></i></span><span style="font-family:Verdana;">. The objective is to make a review on ethnopharmacological, pharmacological, toxicological and chemical data that enhance these medicinal plants in the fight against diarrheal infections. Specific keywords were used for bibliographic rese
文摘Background: Bacterial meningitis is an inflammation of the meninges caused mainly by three bacterial species Neisseria meningitidis, Streptococcus pneumoniae and Haemophilus influenzae that are transmitted by nasopharyngeal secretions emitted by carriers. Meningitis is a public health problem in Benin, like all countries in the African meningitis belt. This study aims to analyze the epidemiological surveillance data of meningitis in Benin from 2016 to 2018. Methods: Each suspect case of meningitis was recorded and Cerebrospinal Fluid (CSF) samples were collected. CSF collection was accompanied by the Integrated Disease Surveillance and Response form. This sheet provides information on the patient’s social-demographic and epidemiological data. CSF specimens were sent to the laboratory for analysis and identification (Gram stain, biochemical parameters, and latex agglutination test) of pathogens according to the WHO standards. Results: Of the 2992 patients with suspected meningitis, 2893 were hospitalized with a death rate of 9.4% (281/2992). The sex ratio of registered patients was 1.29 in favor of men. The median age was 4 years (min: 0;max: 90). Patients younger than five years were the most represented (44.8%). During the study period, there was a decrease in the incidence of meningitis per 100,000 inhabitants (6.3 to 3.2 from 2016 to 2018). Of 2928 CSF samples collected we were able to identify 899 pathogenic bacterial species. The most represented species are S. pneumoniae (63.4%), N. meningitidis (24.4%) and H. influenzae (12.2%). Conclusion: The burden of disease is disproportionate in the northern departments as in others. The frequency of bacterial meningitis in the northern region increased during the study period. However, deaths have been recorded in the departments of the South (“Atlantic”, “Plateau”). This suggests an improvement in epidemiological surveillance and case management throughout the national territory.
文摘One of plant-based products for dental care is plant-based proteolytic enzymes which are principally proteases. In order not to damage the protein and bioactive content, an efficient method should be employed for their purifications. As such, three-phase partitioning (TPP) was used to purify protease from moringa (Moringa oleifera). TPP is an emerging, promising, non-chromatographic and economical technology which is simple, quick, efficient and often one-step process for the separation and purification of bioactive molecules from natural sources. It involves the addition of salt (ammonium sulphate) to the crude extract followed by the addition of an organic solvent (butanol). The protein appears as an interfacial precipitate between upper organic solvent and lower aqueous phases. The various conditions such as ammonium sulphate, ratio of crude extract to t-butanol and pH which are required for attaining efficient purification of the protease fractions were optimized. Under optimized conditions, it was seen that, 35% of ammonium sulphate saturation with 1:0.75 ratio of crude extract to t-butanol at pH 7 gave 4.94-fold purification with 96.20% activity yield of protease in the middle phase of the TPP system. The purified enzyme from Moringa oleifera has no antimicrobial effect on the pathogenic bacteria tested. However, this purified enzyme, can be considered as a promising agent, cheap, and safe source which is suitable for using in various industries.
文摘Introduction: In the North-Benin, there are three agents causing pediatric purulent meningitis outside the neonatal period. These are: Streptococcus pneumoniae, Neisseria meningitidis and Haemophilus influenzae type b. The aim of this research work was to investigate bacteria serotypes that caused childhood purulent meningitis in the pediatric unit of the Borgou à Regional University Teaching Hospital (CHUD-Borgou) located in Parakou (North-Benin). Patients and Methods: Through a prospective and descriptive study centered on children aged 0 to 5 years old suspected of meningitis and hospitalized, the cerebrospinal fluid (CSF) samples of those children were analyzed at the WHO reference laboratory in Banjul for serotyping by real time polymerase chain reaction (RT/PCR). Results: Among the 1396 children hospitalized during that period, 366 were suspected of meningitis and had benefitted from lumbar puncture. Among those 366 suspected cases, 51 cases of purulent meningitis were confirmed after CSF cytobacteriological and biochemical test at the CHUD-Borgou laboratory. Among 51 CSF samples in which purulent meningitis was confirmed, 44 were sent to Banjul. In addition, 310 CSF samples from non-confirmed cases of meningitis were also sent to Banjul. In the whole set of samples sent for real time PCR, 151 cases of Streptococcus pneumoniae (42.7%) were found, 5 cases of Neisseria meningitidis (1.4%) and 1 case of Haemophilus influenzae (0.3%) were also encountered. As regards Streptococcus pneumonia, the serotypes encountered were: 1, 3, 4, 5, 7F, 8, 9V, 9V/9A, 9N/9L, 14, 18C, 19A, 23F, 33F as well as non typed and non typable serotypes. As for Neisseria meningitidis, only serogroup A was found in it. For Haemophilus influenzae, only serotype b was identified. Conclusion: Four non vaccine serotypes (8, 9V/9A, 9N/9L and 33F), non typed and non typable serotypes which are not covered by 13-valent pneumococcal conjugate vaccine (PCV 13) were identified. This highlights the need to enhance surveillance of pediatric purulen
文摘Healthcare-associated infections (HCAIs) remain a major public health concern. The aim of this study was to characterize potential pathogenic bacteria isolated in high-risk infectious services at the University Hospital Center of Suru-Léré in Benin. A cross-sectional, descriptive study was carried out on 215 samples with 8 air samples, 20 hand samples and 187 samples of medical-technical material. Genes for resistance to <i>β</i>-lactam antibiotics (blaTEM, blaSHV, blaCTX-M and blaOXA-1) were sought. The data were processed and analyzed using EPI Info version 3.5.4 software. A total of 10 bacterial species were identified. Of the 319 bacterial strains identified, <i>Staphylococcus saprophyticus</i>, <i>Staphylococcus aureus</i> and <i>Enterococcus faecalis</i> were predominant at 20.06%, 17.87% and 11.28% respectively. Antibiotic susceptibility showed that the majority of bacterial strains were multidrug-resistant. Of the 4 resistance genes sought, only the blaTEM and blaSHV genes were found. The poor microbiological quality observed in high-risk infectious services could be a risk factor for healthcare-associated infections. It is therefore useful to implement preventive measures in order to prevent or reduce the risk of healthcare-associated infections.
文摘Urinary tract infections remain the most common bacterial infection in human population. They are also one of the most frequently occurring nosocomial infections, representing about 40% of all nosocomial bacterial infections world widely and associated with important medical and financial implications. This retrospective study aimed to establish the bacterial profile of UTIs in Benin. Therefore, reported data were collected from 2003 to 2012 at Menontin’s Hospital in Cotonou and subjected to analyses. At the end of the study, fourteen different bacteria species were found to be associated with UTI cases in Benin. Escherichia coli was the most prevalent followed by Staphylococcus aureus. Results of the current study are helpful to the health care community of Benin in establishing the appropriate antibiotherapy for UTI patients’ treatment with respect organisms into circulation.
