Antimicrobial Activity of Medicated Soaps Commonly Used By Dar es Salaam Residents in Tanzania

An in vitro evaluation of the anti-microbial activity of medicated soaps was conducted using ditch-plate and hand washing techniques. Strains of reference microbes namely Candida albicans (ATCC90028), Staphylococcus aureus (ATCC25923), Pseudomonas aureginosa (ATCC27853) and Escherichia coli (ATCC25922) were tested at three different soaps' concentrations (1.0, 4.0 and 8.0 mg/ml). A total of 16 medicated soaps were assayed for their antimicrobial efficacy. Of these, 13 were medicated and 3 non-medicated soaps, which served as control. Ciprofloxacin and ketaconazole were employed as positive controls. Label disclosure for the soaps' ingredients and other relevant information were absorbed. The most common antimicrobial active ingredients were triclosan, trichloroxylenol and trichlorocarbanilide. ANOVA for means of zones of inhibition revealed variability of antimicrobial activity among the medicated soaps. Positive correlation (r=0.318; P<0.01) between zones of inhibition and soaps' concentrations was evidenced. Hand washing frequencies positively correlated with microbial counts. Roberts(®) soap exhibited the largest zone of inhibition (34 mm) on S. aureus. Candida albicans was the least susceptible microbe. Regency(®) and Dalan(®) exhibited the least zone of inhibition on the tested bacteria. Protex(®), Roberts(®), Family(®) and Protector(®) were equally effective (P<0.01) against S. aureus. In conclusion, majority of the assayed medicated soaps have satisfactory antibacterial activity; though lack antifungal effect with exception of Linda(®) liquid soap. The hand washing technique has proved to be inappropriate for evaluation of soaps' antimicrobial efficacy due to presence of the skin microflora.

Knowledge on management of fever among mothers of undertens in Dar es Salaam, Tanzania

OBJECTIVES

To explore on mothers' knowledge on fever and its management as well as assess treatment received by under 10 year-old children (undertens) having fever prior to being presented in outpatient departments at two Municipal hospitals.

METHODS

Data were collected using a semi-structured questionnaire interviews among mothers of undertens, who had problems of fever and presented at the two Municipal hospitals viz. Mwananyamala and Temeke Municipal hospitals, in Dar es Salaam.

RESULTS

A total of 301 respondents were interviewed. Of those, 151 had male and 150 and female undertens, whose ages ranged from 1 month to 10 years-old with median of 2 years. Minority (32%) of the interviewees were unaware of possible causes of fever, while 52% attributed it to malaria. About 25% of the respondents regard fever as a minor health problem, thus they did not seek medical attention unless other severe symptoms were manifested. Majority (88.4%) of the respondents self-medicated, and out of those 24% used antimalarials and antipyretics, while 7.6% used both antipyretics and antibiotics for alleviation of fever. On arrival in OPDs, only 62.4% of the respondents were prescribed with antimalarial agents. Approximately 18% of the interviewees admitted to have had changed medications due to unresponsiveness to the previously prescribed drugs. Pharmacies were the main sources of the self-medicated drugs (n = 272; 90.4%).

CONCLUSION

Fever is a public health concern among undertens, which contributed to high rate of self-medication and irrational use of medicines. However, respondents demonstrated adequate knowledge on fever and on its management though fever was associated with underlying causes.

Knowledge and perception of mothers and caregivers on childhood diarrhoea and its management in Temeke municipality, Tanzania

Diarrhoea is an increase in volume of stool or frequency of defecation. It is one of the most common clinical signs of gastrointestinal diseases, but also can reflect primary disorders outside of the digestive system. This cross-sectional descriptive survey was conducted in Temeke Municipality, Dar es Salaam over a 4-month period to investigate on knowledge and perception of mothers/caregivers of underfives on childhood diarrhoea. Specifically, the study focused on frequency of diarrhoeal episodes and their risk factors as well as effectiveness of traditional remedies used for its management prior to seeking medical attention. A semi-structured questionnaire was used for data collection, through which a total of 161 mothers were interviewed. Of those, 74 (46%) had female and 87 (54%) had male underfives with median age of 2-years. Frequency of diarrhoeal episodes was high among the underfives and was comparable between females and males (87 vs 74; P<0.05). Medicinal plants were the most common traditional remedies employed by majority (71%) of the interviewees, which have been purported to be effective in management of childhood diarrhoea. Guava (leaves and fruits) was the most commonly used remedy in the treatment of diarrhoea. Mothers' knowledge on predisposing factors of childhood diarrhoea was poor, which was directly correlated with education level. Only about one-third of the respondents (31%) were aware of risk factors for childhood diarrhoea that cited poor sanitation and water as the main factors. Diarrhoeal episodes were perceived wrongly as normal growth stage and that were caused by several other "illnesses". It is important that further studies on traditional remedies should be carried out to validate their usefulness in the treatment of childhood diarrhoea.

The in vitro antimicrobial activity of fruit and leaf crude extracts of Momordica charantia: a Tanzania medicinal plant

OBJECTIVE

To evaluate the antimicrobial activity of Momordica charantia extracts on reference strains and microorganisms isolated from clinical specimens.

METHOD

Petroleum ether and methanolic crude extracts of fruits and leaves of the plant were evaluated for antimicrobial activity using the disk diffusion method on four reference microorganisms (Pseudomonas aeruginosa, Escherichia coli, Candida albicans and Staphylococcus aureus; and four clinical strains of Klebsiella pneumoniae, Proteus vulgaris, Salmonella typhi and Cryptococcus neoformans.

RESULT

Antimicrobial activity was observed against all the tested microorganisms with exception to P. mirabilis and C. neoformans. Methanolic crude extracts exhibited relatively broader antimicrobial spectrum of activity than petroleum ether extracts with the as lower concentration as 0.075mg/µl. Methanolic fruit crude extract displayed the broadest antimicrobial spectrum by inhibiting majority (75%) of the tested microorganisms. Neither was there synergistic nor addition effect upon mixing leaf and fruit extracts of equal concentrations derived from the same solvent.

CONCLUSION

Extracts of M.charantia demonstrated antimicrobial activity on tested microorganisms except on Proteus mirabilis and Cryptococcus neoformans. Fruit extracts showed higher antimicrobial activity than leaf extract. Further studies are recommended that will involve various parts of the plant, select different fractions of extracts and purify the active antimicrobial components.

Genetic identification and host range of the Spanish strains of Echinococcus granulosus

Three strains of Echinococcus granulosus have been previously identified in Spain (namely 'sheep', 'horse' and 'pig'), but these Spanish strains have not been properly genotyped yet. The aim of the present research was to identify the genotype to which they correspond to. Cyst isolates were obtained from different host species, and the strain to which each belonged was established by analysis of its random amplified polymorphic DNA (RAPD) banding patterns. These results were compared to those obtained with the analysis of two mitochondrial fragment sequences (cytochrome oxidase 1 (CO1) and NADH dehydrogenase 1 (ND1)) from each isolate. The Spanish 'sheep' strain corresponded with the genotype 1 (G1) of the parasite, infecting Spanish sheep, cattle, goat, pig, wild boar and human; the Spanish 'horse' strain corresponded with the genotype 4 (G4), only infecting Spanish horses; and the Spanish 'pig' strain corresponded with the genotype 7 (G7), infecting Spanish goat, pig and wild boar. Goat, pig and wild boar can be infected by two genotypes, G1 and G7. This circumstance, and especially the possibility of sylvatic intermediate hosts serving as reservoirs of the G1 genotype of the parasite, must be taken into consideration by authorities in order to develop and evaluate effective anti-hydatidosis programmes.