Articles

Highly selective and sensitive detection of cardiac troponin I (cTnI) is a powerful complement to clinical diagnosis of acute myocardial infarction (AMI). In this study, a strategy for cTnI detection was developed by constructing a universal biosensing interface composed of zwitterionic peptides and aptamers. The peptides were self-assembled onto gold chips, and some of them were biotinylated. The cTnI-specific binding aptamers were immobilized through the streptavidin-biotin system. Surface plasmon resonance (SPR) measurements revealed the preparation process. The developed aptasensor presents a linear detection with cTnI ranging from 20 ng/ml to 600 ng/ml and a detection limit of 20 ng/ml. The high immobilization of the aptamer enhances the sensitivity of the aptasensor and the calculated KD was 6.75 nM. Due to the outstanding antifouling property of the zwitterionic peptide, the developed aptasensor possesses a high resistance towards protein fouling. Moreover, the aptasensor has excellent selectivity and specificity towards cTnI in complex media. Hence, the proposed peptide-based aptasensor shows great potential for practical application in medium sized Myocardial Infarction (MI).

The present report highlights our results on synthesis of NaYF4:Yb,Er@SiO2@Ag core–shell nanoparticles (CSNPs) for plasmon-enhanced upconversion luminescence (UCL). Hydrophilic surface UCL nanoparticles (UCLNPs) as cores were obtained by precipitation of Rare Earth Elements (REE) chlorides from water-alcohol solutions. The formation of a hydrophobic surface of α-NaYF4:Yb,Er NPs was achieved by thermolysis method at 280 °C and β-NaYF4:Yb,Er by precipitation method in nonpolar medium at 320 °C. Silica shell was formed by the modified Stöber method on the surfaces of UCLNPs with different polarity and phase composition. A mixture of hexane-cyclohexane-isopropyl alcohol was used as a medium for the formation of mononuclear CSNPs on hydrophobic surfaces of cores with different thicknesses of the silica shell: 5 nm and 14 nm. Formation of a predetermined thickness of silica shell was carried out by introducing a precise quantity of TEOS taking into account the size of core NPs with molar ratio TEOS: H2O equal to 1:6. The morphology and phase composition of cores and CSNPs were examined by transmission electron microscopy and selected area electron diffraction, respectively. The insertion of Ag NPs into the structure of NaYF4:Yb,Er@SiO2 was carried out in parallel at the stage of shell formation, which made this synthesis a one-step process. The control of the size of Ag NPs was implemented through the use of a colloidal solution of NPs of the cluster structure by changing the polarity of the medium. The highest intensity enhancement of 85-fold with 5 nm and 29-fold with 14 nm shell thickness was recorded, respectively. For the first time, tests on bioimaging of neutrophil cells by those CSNPs are demonstrated.

Nanotechnology is a smart technology in the field of biomedical engineering used for the diagnosis and treatment of diseases. Nanodrugs provide better encapsulation of drug and efficiency at low dosage to kill the targeted tissue/cells. However, the chances of chronic toxicity and high cost of treatment limits its applicability [1]. To overcome these problems still, the experts of the scientific community have been working on it, to design the best one and cost-effective treatment for the human welfare.

State Department had evacuated a number of Americans from the U.S. consulate in Guangzhou, China after they experienced unexplained health issues. A group of U.S. diplomats stationed in China have been brought back to the states after being inflicted by a mystery illness that reportedly resembles the brain injuries previously suffered by staff in Cuba. At the end of the December 2018 we have found a medicine fully treating the damages caused the Frey Effect of Microwave and other types of Sonic Weapons in Human’s internal, endogenous organs. I am proposing to use Naphasoline nitrate, (former) nasal decongestant, to treat Carcinogenesis of the Human’s internal, endogenous organs caused by Sonic Weapons through the release and cleaning of the Lymphatic ways in patients with colorectal, colon, pancreatic, breast, etc., cancer. I have proved this healing effect of the Naphazoline nitrate on myself during treatment in last months of the year 2018.

Increased exposure to electromagnetic fields such as radio frequencies used by Wifi technology raise questions and concerns about their impact on health. For answer these questions, several scientific studies have carried out followed by results publication in prestigious scientific revues. Literature conducted on the effects of non-ionizing radiation and Wifi waves is vast and sometimes controversial. Epidemiological studies and the results of in vitro and in vivo experimental studies have showed the biological effects of electromagnetic field in different frequencies range. These effects caused disorders at the molecular and behavioral level. However, these studies were insufficient to confirm the directly related effects to the cause. Therefore, further research must be done to raise the controversy about the safety of wireless waves.

In natural convection, the fluid motion occurs by natural means such as buoyancy. Heat transfer by natural convection happens in many physical problems and engineering applications such as geothermal systems, heat exchangers, petroleum reservoirs and nuclear waste repositories. These problems and phenomena are modeled by ordinary or partial differential equations. In most cases, experimental solutions cannot be applied to these problems, so these equations should be solved using special techniques. In this paper, natural convection of a non-Newtonian fluid flow between two vertical flat plates is investigated analytically and numerically. Collocation Method (CM) and fourth-order Runge -Kutta numerical method (NUM) are used to solve the present problem. These methods are powerful and convenient algorithms in finding the solutions for the equations. While these are capable of reducing the size of calculations. In order to compare with exact solution, velocity and temperature profiles are shown graphically. The obtained results are valid with significant accuracy.

Background: The endemic nature of poliomyelitis in Nigeria was a source of concern to many given the global efforts aimed at eradicating the scourge. In this study, the factors that influenced the eradication of this malady in South-South Nigeria (Akwa Ibom and Cross River State) were investigated. Four null hypotheses, drawn on these factors (including culture belief, religious difference, language and the prevalence of ethnic conflict) guided the investigation. The main thrust of this study was to examine how socio-cultural factors negatively influenced the eradication of polio in the study area. Methods: Through stratified random and purposive sampling techniques, 600 adult men and women who had children were selected for the study. A structured questionnaire constructed by the researcher was used in data collection. Data analysis was carried out using one-way ANOVA and independent t-test statistical tools. Results: The findings were that cultural belief and religious affiliation exerted significant influence on the people’s effort towards polio eradication. Conclusion: The study indicated that the low use of health services by the people was brought about by variation in these variables. Among other things, it was suggested that continuous awareness campaigns be carried out to educate the people on the need for immunization anchored in science and technology.

Objective: The study aimed to describe the epidemiological profile of the homeless population and report the social impact on healthcare services provided by a voluntary initiative during one-year of follow-up. Method: This is an investigational study, carried out in an important capital-city of southern Brazil, which included 509 individuals in 2019. Findings were divided into three segments: sociodemographic, substance use/abuse and impact on healthcare. Results: The sociodemographic profile found was predominantly male, white, single, heterosexual, educated in elementary or high school, in regular use of legal and/or illegal substances, and living as homeless for less than a year. The impact of assistance provided on the perception of individuals who returned in subsequent actions was evident. Conclusion: The significant increase in the number of homeless people in large urban centers can benefit from the support of non-profit organizations to address the deficiencies faced in accessing basic health services. Based on this, we seek to advance in the development of new policies that improve local healthcare for the vulnerable population, to be more assertive to their needs.

It is with interest and pleasure that I see notices of meetings and symposia, and articles, devoted to the theme Noncommunicable disease. I still live in the economic and geographical ‘South’ but the concern arises from the continued use of terminology that dulls the senses to the urgency of the problems involved. Since I wrote the letter (reference at end) the epidemic of the so called ‘non’ communicable disease has increased greatly; obesity, cardiovascular disease, diabetes, cancers, accidental trauma, road deaths etc, and there is still less research and action about breaking the methods of spread than there is about the illnesses.

Background: In India, the genetic disease is a disregarded service element in the community health- protection system. This study aims to gauge the accessibility of services for treating genetic disorders and also to evaluate the practices on deterrence and management services in the district health system. Methods: A cross-sectional survey of selected health amenities from 454 medical officers (MO’s), 94 accredited social health activist (ASHAs) workers, 86 multipurpose health assistant-female (MPHA-F), 34 multipurpose health assistant-male (MPHA-M), 14 multipurpose health supervisors-female (MPHS-F), 10 multipurpose health supervisors-male (MPHS-M), 6 multipurpose health extension officer/ community health officer (MPHEO/CHO), 10 public health nurse (PHN), 45 lab technicians (LT’s) working in the government health sector and 254 in the private health sector, 409 nursing staff working in the government health sector and 995 in the private health sector, 15 primary health centers (PHC’s), 4 community health centers (CHC’s), 1 district government hospital (DGH), 3 referral hospitals (RH’s). From the side of private health institutions 25 corporate hospitals (CH’s), 3 medical colleges (MC’s), and 25 diagnostic laboratories (DL’s) were conducted. Results: The findings show that adequate staff was in place at more than 70% of health centers, but none of the staff have obtained any operative training on genetic disease management. The largest part of the DH’s had rudimentary infrastructural and diagnostic facilities. However, the greater part of the CHC’s and PHC’s had inadequate diagnostic facilities related to genetic disease management. Biochemical, molecular, and cytogenetic services were not available at PHC’s and CHC’s. DH’s, RH’s, and all selected medical colleges were found to have offered the basic Biochemical genetics units during the survey. In 24% of CH’s, the basic biochemical units are available and 32% (8 out of 25) of DL’s have the advanced biochemical genetics units by study. Molecular genetics units were found to be available in 28% (7 out of 25) of DL’s during the study. About 6 (24%) diagnostic centers of cytogenetic laboratories were located in the Visakhapatnam district under the private sector. Conclusion: The district health care infrastructure in India has a shortage of basic services to be provided for the genetic disorder. With some policy resolutions and facility strengthening, it is possible to provide advanced services for a genetic disorder in the district health system.