Host-Microbial Relationship: Immune Response to Microbial Infections with or without Medication

Immune responses of the host to any infectious agents vary in controlling the pathogens. The process begins by the entry of microorganisms into the host to initiate host immune response to understand the type of microorganisms and react accordingly for possible elimination of the organisms. In some cases the host co-exists with the pathogens or unable to effectively deal with them leading to disease condition. Thus, the pathogens establish, multiply and cause disease. The review considered the mode of acquisition of infection, pathogenesis and immune responses to microbial infection. Other areas included the enhancement of immune responses to control infection, immune responses of the host under drug treatment and the control of microbial infection. The understanding of the relationship between infectious microbes and the host immune system leading to protective immunity or disease state will give much information about treatment and controlling of microbial infection in our environment

Seroprevalence of Hyperglycaemia in HIV Positive Patients Visiting the Cape Coast Teaching Hospital in Ghana

Background: Hyperglycaemia is a metabolic syndrome and common endocrine disease where there is increased blood glucose level. It can result in long-term damage and failure of different organs, especially the eyes, kidneys, nerves, heart, and blood vessels and finally cause death. This study was conducted to determine the prevalence of hyperglycaemia in HIV subjects visiting the Cape Coast Teaching Hospital (CCTH), Cape Coast and its relationship with Highly Active Antiretroviral Therapy (HAART).  Methods: A cross sectional study was carried out and blood samples of 120 HIV positive subjects of age groups ranging from 2 to 74 were collected for screening and confirmation after an informed consent was obtained from them. The blood glucose level was then tested using OneTouch glucometer and test strips.  The results were analysed using chi square goodness-of-fit and cross tabulation.  Results: A total of 9 patients out of the 120 HIV subjects had an increased glucose level, giving a prevalence rate of 7.5%. They were within the ages of 20-60 years and were significantly lower compared to those without hyperglycaemia (p<0.05), those married (p=0.001) and those divorced (p=0.001).  There was an inverse relationship between the period of living with HIV and the high glycaemia status (r= -0.949, p=0.017). There was also an inverse relationship between the use of HAART and high glycaemia status (r=-0.071, p=0.0028). There was a significant number of participants, who were experiencing increased thirst (p=0.003). Also a significant number of participants experienced increased hunger (p=0.010). Conclusion: The study revealed that there was hyperglycaemia among the study population. This may be reduced during therapy and changes in their lifestyle. Regular monitoring of glucose level in HIV infected patients and counselling on lifestyle changes are recommended. Keywords: Seroprevalence, hyperglycaemia, HI

Strategies Developed by Toxoplasma gondii to Survive in the Host

One of the most successful intracellular parasites, Toxoplasma gondii has developed several strategies to avoid destruction by the host. These include approaches such as rapid and efficient cell invasion to avoid phagocytic engulfment, negative regulation of the canonical CD40-CD40L-mediated autophagy pathway, impairment of the noncanonical IFN-γ-dependent autophagy pathway, and modulation of host cell survival and death to obtain lifelong parasite survival. Different virulent strains have even evolved different ways to cope with and evade destruction by the host. This review aims to illustrate every aspect of the game between the host and Toxoplasma during the process of infection. A better understanding of all aspects of the battle between Toxoplasma and its hosts will be useful for the development of better strategies and drugs to control the parasite

Variation detection based on next-generation sequencing of type Chinese 1 strains of Toxoplasma gondii with different virulence from China

A: Summary of annotation for SNPs; B: Summary of annotation for indels; C: Summary of annotation for SVs; D: Summary of annotation for CNVs. (DOCX 18 kb

Genotyping and sero-virological characterization of hepatitis B virus (HBV) in blood donors, Southern Ethiopia.

Hepatitis B virus (HBV) prevalence is highest in Sub-Saharan Africa including Ethiopia. HBV genotypes have distinct geographic distributions and play a role in course of infection and treatment management. However, in Ethiopia there is paucity of information about distribution of HBV genotypes. This study was done to determine genotype, mutation and sero-virological profiles of HBV isolates in Southern Ethiopia. Cross-sectional, laboratory based study was conducted on 103HBsAg sero-positive samples from a total of 2,237 screened blood donors. HBV serological markers and biochemical assays were done. Serum viral load was measured using quantitative real-time PCR. Partial HBV S-gene was amplified with nested PCR and sequenced. Bioinformatics tools were utilized to determine genotypes, serotypes and mutations. Of 103 HBsAg reactive serum samples, 14.6% and 70.9% were sero-positive for HBeAg and HBeAb, respectively. Ninety-eight samples gave detectable viral load with a median of 3.46(2.62-4.82) log IU/ml. HBeAg sero-positive donors carried elevated levels of viral load. Eighty five isolates were successfully amplified, sequenced and genotyped into 58 (68.2%) genotype A (HBV/A) and 27 (31.8%) genotype D (HBV/D). HBV serotypes found were adw2 (74.1%), ayw2 (24.7%), and ayw3 (1.2%). In twenty-four (28.2%) samples mutations in the major hydrophilic region (MHR) were observed. Donors infected with HBV/A had higher viral load and more frequent MHR mutation than HBV/D infected donors. This study illustrated distribution of HBV genotype A and D among blood donors in southern Ethiopia. It also demonstrated occurrence HBV variants that may influence clinical aspects of HBV infection. The study contributes in narrowing the existing gap of HBV molecular study in Ethiopia

Sero-prevalence of hepatitis B and C viral infections in Ghanaian HIV positive cohort: a consideration for their health care

Abstract Background Antiretroviral therapy (ART) has significantly decreased HIV/AIDS-related morbidity and mortality. However, globally, many people living with HIV die from non-AIDS related illnesses including liver diseases which occur partly due to co-infection with HBV and or HCV. The aim of this study was to determine the seroprevalence of HBV and HCV among HIV infected individuals receiving care from three different hospitals in the Central Region of Ghana. Methods This research was a case-case study. The population consisted of ART naive persons (newly confirmed HIV cases) and those who had been on ART for more than 3 months (old cases). Each individual’s sociodemographic characteristics and clinical data including their HBV and HCV status were collected. Those who knew their HBV and HCV status and those who did not know their status were tested for circulating HBsAg and anti-HCV using rapid diagnostic test cassettes. Descriptive analysis was done, and the data presented as median with interquartile range, frequency and percentage. Fisher’s exact test and Pearson Chi-square (χ2) test were used to determine associations between categorical variables. Results Overall, 394 HIV individuals aged, 3 to 76 years old with a median age of 41 (IQR:34–49) participated in this study. Circulating HBsAg and anti-HCV were detected in 6.1% (24/394) and 0.5% (2/393) participants respectively with an overall seroprevalence of 6.6% (26/394). None of the participants was positive for both HBV and HCV infections. 92.1% (363/394) had no information on their HBV status while all the 394 participants did not know their HCV status during data collection. No significant association of HBV infection rate was found in all the socio-demographic data of the participants. But HBV infection rates were significantly higher in those at WHO clinical stages 2 and 3 (P = 0.004). Conclusion HBV and HCV were detected among the HIV-infected participants. Majority of the participants had no information on their HBV status and none of the participants had information on his or her HCV status. This study recommends the need for policy makers to provide free HBV and HCV screening for all HIV infected individuals for their effective management

Comparison of HBV genotype A and genotype D infected donors with demographic and laboratory profiles.

<p>Comparison of HBV genotype A and genotype D infected donors with demographic and laboratory profiles.</p

Increased insulin resistance with reduced beta cell function in recovered COVID-19 Ghanaians

Aim: This study compares levels of insulin resistance and beta-cell function and their relationship with liver enzymes in recovered COVID-19 participants and their uninfected counterparts in a cross-sectional study design in the Tamale metropolis of Ghana. Methods: Biochemical indices for liver function, lipid metabolism, inflammation and oxidative stress were assessed under fasting state in 110 recovered COVID-19 and 116 uninfected participants. The homeostatic model assessment of insulin resistance (HOMA-IR) and the triglyceride-glucose index (TyG) were employed for the assessment of insulin resistance. Results: Recovered COVID-19 participants presented lower (P  0.05) between the study groups. Prevalence of insulin resistance ranged from 61 % (71/116) to 81 % (89/110) for the uninfected and recovered COVID-19 participants respectively. Selected liver enzymes associated with HOMA-IR and TyG. Conclusion: The risk of developing type 2 diabetes mellitus appears higher in recovered COVID-19 participants than their uninfected counterparts despite the high prevalence of insulin resistance in both groups

Demographic and laboratory profiles of HBsAg sero-positive blood donors.

<p>Demographic and laboratory profiles of HBsAg sero-positive blood donors.</p

Distribution of amino acid substitutions (mutations) detected within the major hydrophobic region (MHR) of HBV S-gene among 21 genotype A isolates aligned with nine reference sequences retrieved from GenBank.

<p>Distribution of amino acid substitutions (mutations) detected within the major hydrophobic region (MHR) of HBV S-gene among 21 genotype A isolates aligned with nine reference sequences retrieved from GenBank.</p