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Abstract: Despite major antimicrobial therapeutic advancements, widespread use and misuse of antimicrobial drugs have increased antimicrobial drug resistance, posing a severe danger to public health. In particular, the emergence of multidrug-resistant bacteria has provided considerable difficulty in the treatment of pathogenic infections. As a result, the creation of novel drugs to treat resistant bacteria is one of the most significant disciplines of antimicrobial research today. TB therapy has recently gained a lot of attention, in addition to developing novel and efficient antibacterial drugs to battle multidrug-resistant illnesses. The use of a different class of drugs, such as well-known drugs, their derivatives, and various new heterocyclic compounds like nitroimidazoles, imidazole analogues, triazoles, imidazopyridines, quinolines, purines, as well as thioactomycin, mefloquine, deazapteridines, benzothiadiazine and other molecules such as benzoxazines, diterpenoids, tryptanthin and phenazine and toluidine analogues followed by many other classes of compounds and their effects are also discussed. As a result, current and newly found antitubercular drugs and their toxicities and mode of action have been focused.

Platelets are associated with the processes that aid in tumour growth and progression. Platelet Count (PLT) and platelet indices like Mean Platelet Volume (MPV), Platelet Large Cell Ratio (P-LCR), Plateletcrit (PCT) and Platelet Distribution Width (PDW) are markers that are linked with platelet activities in cancer. This review involves the evaluation of PLT, MPV and PCT in different cancers. Platelets actions should be always monitored during several diseases, as their potential exceeds the classical function in preventing bleeding. Vast roles of platelets were discovered in several biological functions. Therefore, studying their indices can be effective in the diagnosis of several disorders including cancer.

Background and Objective: In recent years, respiratory tract viral infections have caused many pandemics that impact the whole world. To investigate the seropositivity of Toxoplasma gondii, rubella, CMV, HSV-1 and group A Streptococcus in recovered COVID-19 patients and correlate these findings with vitamin D levels. Materials and Methods: A total of 417 COVID-19 patients with diarrhoea were enrolled in this study. Vitamin D and seroprevalence for Toxoplasma gondii, rubella, CMV, HSV-1 and group A Streptococcus were evaluated and correlated. Results: It was found that recent infection in COVID-19 patients with HSV-1, rubella, Toxoplasma and CMV, respectively. IgG was detected indicating the development of adaptive immunity with all microbes. Conclusion: Current study detected a correlation between vitamin D levels and HSV-1 and no correlation between this infection and vitamin D deficiency with the other microbes.

Background/Aim: Cervical cancer remains a major public health concern. The ratio of CD4+:CD8+ T-cells is used to evaluate the immune system function. This study aimed to explore the CD4+:CD8+ T-cell ratio in relation to the glycemic status, inflammatory markers, vitamin D, and vitamin B12 in patients with early diagnosed cervical cancer. Patients and Methods: This is a cross-sectional study. Blood samples were collected for flow cytometry analysis. Information regarding Papanicolaou (Pap) smears and colposcopy investigations were collected from 152 women with type 2 diabetes admitted to East Jeddah Hospital, Jeddah, Saudi Arabia, between January 2018 and January 2021. Results: Patients with early cervical carcinoma and a higher CD4+:CD8+ ratio (>1.2) had a higher C-reactive protein (CRP) level than those with a lower CD4+:CD8+ ratio (Mean±SD=13.75±13.3 vs. 10.85±8.1; p-value=0.034). Patients with early cervical carcinoma, diabetes, and higher CD4+:CD8+ ratio (>1.2) had a higher blood HbA1c percent than those with a lower CD4+:CD8+ ratio. Conclusion: A high CD4+:CD8+ T-cells ratio was associated with an increased HbA1c% and CRP levels in women with diabetes diagnosed with early cervical carcinoma, which can induce inflammation in early diagnosed patients with cervical cancer.

Present study investigate the in-vitro antibacterial and antifungal potential of Typha elephantina leaves aqueous extract (T. Eaq), ethanolic extract (T. Eeth) and methanolic extract (T. Emth) at different dosages against selected bacteria and fungi using dis diffusion method and Potato Dextrose Agar method. The study was also proceeded in- vivo against one strain of fungi (Aspergillus niger) using aqueous (T. Eaq) extract only. In-vitro study showed that Citrobacter freundii was highly sensitive while Salmonella typhimurium was the least among all. The antifungal activity was dose dependent and differs according to the fungal strain. Aspergillus niger was highly sensitive in order of aqueous extract (T. Eaq), ethanolic extract (T. Eeth) and methanolic extract (T.Emth), followed by Alterneria solani, Candida albicans and Aspergillus ustus. The in-vivo antifungal study was carried using Cyprinus carpio which were first infected with Aspergillus niger and then treated with (T. Eaq) at different doses. During in-vivo study various hematobiochemicl parameters and bio-accumulative stress of some heavy metals were assessed. Highly significant (P0.05) remedial effects were observed at day 21st of treatment with extract at 100mg/ kg body weight. Differential accumulation was found i.e in skin the accumulation was highest followed by intestine gills and muscles tissues. Liver showed least accumulation.

The aim of this study was to evaluate renal function by urinalysis in COVID-19 patients following the administration of vancomycin.A retrospective observational study was performed between October 2020 and January 2021, during which time patients were hospitalized in the Prince Mohammed Bin Abdulaziz Hospital in Riyadh, Saudi Arabia. The patients were free of kidney disease. Urinalysis was performed by an automated laboratory system, and the collected results were based upon age, gender, diabetic status, whether the patients had received vancomycin, the mortality rate, and the urinalysis panel including coinfection by bacteria and yeast.A total of 227 patients were included in this study, 147 (64.75%) of whom were male and 80 (35.25%) of whom were female; 54.63% were diabetic, 11.89% were prediabetic, and 33.48% were non-diabetic patients. Proteinuria, hematuria, glycosuria, coinfection, and ketonuria were detected among all participants within the study group, specifically among diabetic patients. The mortality rate was 16.2% among the study group; 6.6% had re-ceived vancomycin, and 9.6% had not received vancomycin. No significant correlation was found between nephrotoxicity and abnormalities in the urine and the mortality rate among members of our study group.Proteinuria, hematuria, glycosuria, ketonuria, and coinfection were common among members of our study group, especially in the diabetic group. Urinalysis abnormalities were less frequent in the vancomycin group than in the others, except the prediabetic group. No correlation between mortality and vancomycin was identified.

This study evaluates the seroprevalence of immunoglobulin M (IgM) and G (IgG) antibodies against SARS-CoV-2 after two doses of Pfizer-BioNTech COVID-19 vaccination from women with breast cancer in Jazan city Kingdom of Saudi Arabia, antibody detections were performed one month and three months after the administration of the second dose.Overall, 103 breast cancer patients were included. Individuals who had had two doses of Pfizer-BioNTech vaccine, patients who were earlier diagnosed with COVID-19 infection, had not finalized immunization plan, or who received the second dose recently were excluded from the study. The antibodies detection test was run according to the manufacturer's directions of Viva Diag™ SARS-CoV-2 IgM/IgG Rapid Test (COVID-19 IgM/IgG Rapid Test).This study included 62 (60.2%) and 41 (39.8%) patients with invasive ductal carcinoma and invasive lobular carcinoma, respectively. The age, median and interquartile range (IQR) was 54.0 (26) years. Regarding reactivity of antibodies, after one month IgM antibody showed 64 (62.1%) positive and 39 (37.9%) negative while IgG antibody showed positive results in all patients. After three months IgM antibody showed 44 (42.7%) positive and 59 (57.3%) negative, while IgG showed 87 (84.5%) positive and 16 (15.5%) negative. There were significant differences in the IgM and IgG seropositivity. There were 19.3% patients with ductal carcinoma who were positive and then turned negative versus 17.7% who were positive and then turned negative, respectively (p0.001). There were significant differences in IgM antibody positivity among different age groups.Our results recommend the importance of screening for an antibody response for breast cancer patient after immunization in order to reveal persons who need early and late extra enhancing vaccine dose. Upcoming studies recommended to estimate different methods that raise cancer patients' immune response.

lt;bgt;Background and Objective:lt;/bgt; In recent years, respiratory tract viral infections have caused many pandemics that impact the whole world. To investigate the seropositivity oflt;igt;Toxoplasma gondiilt;/igt;, rubella, CMV, HSV-1 and group Alt;igt;Streptococcuslt;/igt; in recovered COVID-19 patients and correlate these findings with vitamin D levels.lt;bgt;Materials and Methods:lt;/bgt; A total of 417 COVID-19 patients with diarrhoea were enrolled in this study. Vitamin D and seroprevalence forlt;igt;Toxoplasma gondiilt;/igt;, rubella, CMV, HSV-1 and group Alt;igt;Streptococcuslt;/igt; were evaluated and correlated.lt;bgt;Results:lt;/bgt; It was found that recent infection in COVID-19 patients with HSV-1, rubella,lt;igt;Toxoplasmalt;/igt; and CMV, respectively. IgG was detected indicating the development of adaptive immunity with all microbes.lt;bgt;Conclusion:lt;/bgt; Current study detected a correlation between vitamin D levels and HSV-1 and no correlation between this infection and vitamin D deficiency with the other microbes.

lt;bgt;Background and Objective:lt;/bgt; Coronavirus disease 2019 (COVID-19), also known as Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), became a global health issue that influenced the lives of billions of people all over the world. The goal of this study was to investigate the clinical findings and routine laboratory evaluations of COVID-19 patients in both average- and high-altitude settings in Saudi Arabia.lt;bgt;Materials and Methods:lt;/bgt; A comparative study to explore the clinical characteristics and Laboratory tests results of COVID-19 patients at both high and average altitudes in Saudi Arabia has been conducted. The study included a total number of 103 patients (53 patients comprising the high-altitude group living in Taif, Saudi Arabia and 50 patients comprising the average-altitude group living in Al Ahsa, Saudi Arabia) were included in the study. Patients were diagnosed with SARS-CoV-2-positive by PCR test. Clinical characteristics, laboratory test results and symptoms of adult patients were collected and expressed as mean and standard deviation. Statistical analysis was done using SPSS software to compare between both groups and significance was considered when the p-value is less than 0.05.lt;bgt;Results:lt;/bgt; Approximately 55.3% of the total cases were male with a mean age of 40.16±12.47 years. There were highly statistically significant differences between the groups in age, heart rate (p0.001). There were also statistically significant differences between the groups in temperature, SpOlt;subgt;2lt;/subgt;, fever, myalgia, shortness of breath and loss of smell and taste.lt;bgt;Conclusion:lt;/bgt; The current study provides an understanding of the clinical and laboratory investigations of COVID-19 patients in two regions (high altitude and average altitude) in Saudi Arabia.

Nanotechnology has undergone significant development in recent years, particularly in the fabrication of sensors with a wide range of applications. The backbone of nanotechnology is nanostructures, which are determined on a nanoscale. Nanoparticles are abundant throughout the universe and are thought to be essential building components in the process of planet creation. Nanotechnology is generally concerned with structures that are between 1 and 100 nm in at least one dimension and involves the production of materials or electronics that are that small. Carbon nanotubes (CNTs) are carbon-based nanomaterials that have the structure of tubes. Carbon nanotubes are often referred to as the kings of nanomaterials. The diameter of carbon is determined in nanometers. They are formed from graphite sheets and are available in a variety of colors. Carbon nanotubes have a number of characteristics, including high flexibility, good thermal conductivity, low density, and chemical stability. Carbon nanotubes have played an important part in nanotechnology, semiconductors, optical and other branches of materials engineering owing to their remarkable features. Several of the applications addressed in this review have already been developed and used to benefit people worldwide. CNTs have been discussed in several domains, including industry, construction, adsorption, sensors, silicon chips, water purifiers, and biomedical uses, to show many treatments such as injecting CNTs into kidney cancers in rats, drug delivery, and directing a near-infrared laser at the cancers. With the orderly development of research in this field, additional therapeutic modalities will be identified, mainly for dispersion and densification techniques and targeted drug delivery systems for managing and curing posterior cortical atrophy. This review discusses the characteristics of carbon nanotubes as well as therapeutic applications such as medical diagnostics and drug delivery.

Background The coronavirus disease 2019 (COVID-19) is a respiratory virus, the spread of which has caused a global pandemic with catastrophic consequences. The current study aimed to investigate the association between vitamin D deficiency and the clinical presentation of COVID-19. Patients and methods The current study included 166 COVID-19 patients recruited from Prince Mohammad Bin Abdulaziz Hospital in Riyadh, Saudi Arabia. The study was conducted from October 2020 to January 2021. Patients were diagnosed by positive polymerase chain reaction (PCR) results. History and clinical data were collected for all subjects. In addition, laboratory analysis was done to estimate blood levels of 25 hydroxyvitamin D (25(OH)D), C-reactive protein (CRP), ferritin, parathyroid hormone (PTH), alanine aminotransferase (ALT), D-dimer, calcium, and relative lymphocytic count. COVID-19 patients were divided into three subgroups according to their vitamin D status. Patients were considered sufficient when their vitamin D level was above 30 ng/mL. Patients with vitamin D levels below 20 ng/mL were considered deficient. Patients with vitamin D levels ranging from 20 ng/mL to 30 ng/mL were considered insufficient. Results Our results showed that 81 patients (49%) were deficient in vitamin D, and 48 patients (29%) were insufficient in vitamin D. Only 37 patients (22%) had normal vitamin D levels. Moreover, a significant difference was found regarding the inflammatory markers of COVID-19 severity. Also, vitamin D levels were inversely correlated with the markers used for monitoring the condition of COVID-19 patients: ferritin, CRP, and D-dimer. Conclusion Our results showed that vitamin D deficiency was associated with increased levels of inflammatory markers of COVID-19 infection.

Human herpesvirus 6B (HHV6B) infects over 90% of the population, and normally establishes a latent infection, where episodes of reactivation are asymptomatic. However, in immunocompromised patients HHV6B reactivation is associated with high morbidity and mortality. Cellular immunotherapy has been utilised against other herpesvirus in immunocompromised settings. However, limited information on the immune response against HHV6B has hampered the development of immunotherapy for HHV6B-driven disease. In this study, we have analysed the cellular immune response against four HHV6B antigens in a panel of 30 healthy donors. We show that the base-line level of T cell reactivity in peripheral blood is very low to undetectable. A short-term reactivation step enabled expansion of T cell responses, and all donors responded to at least 1 antigen, but more commonly 3 or 4. A hierarchy of immunogenicity was determined with antigens U90 and U54 being co-dominant, followed by U11 and U39. Putative CD8+ T cell epitopes were mapped to U90 and U11, predicted to be presented in the context of HLA-A1, A29, B39 and C6. T cells reactive against these novel epitopes were able to recognise virus-infected cells. Our data is supportive of the application and on-going development of T cell immunotherapy against HHVB-driven disease in the immunocompromised host.