Citrate-modified bacterial cellulose as a potential scaffolding material for bone tissue regeneration.

Bacterial cellulose (BC) is a novel biocompatible polymeric biomaterial with a wide range of biomedical uses, like tissue engineering (TE) scaffolds, wound dressings, and drug delivery. Although BC lacks good cell adhesion due to limited functionality, its tunable surface chemistry still holds promise. Here, hydroxyapatite (HA) was incorporated into a citrate-modified BC (MBC) using the biomimetic synthesis in simulated body fluid (SBF).

Prevalence and trends of pregnancy-related acute kidney injury in sub-Saharan Africa: a systematic review and meta-analysis.

Background: Pregnancy-Related Acute Kidney Injury (PRAKI) is an important contributor to maternal-fetal morbidity and mortality. The burden of PRAKI in sub-Saharan Africa is not well documented. We conducted a systematic literature review and meta-analysis to estimate the prevalence of PRAKI in sub-Saharan Africa.

Autophagy-based therapy for hepatocellular carcinoma: from standard treatments to combination therapy, oncolytic virotherapy, and targeted nanomedicines.

Human hepatocellular carcinoma (HCC) has been identified as a significant cause of mortality worldwide. In recent years, extensive research has been conducted to understand the underlying mechanisms of autophagy in the pathogenesis of the disease, with the aim of developing novel therapeutic agents. Targeting autophagy with conventional therapies in invasive HCC has opened up new opportunities for treatment.

Fine-Tuned "Click" Functionalization of PAMAM Dendrimers with a Linear Fluorinated Guanidino Linker: Synthesis, Characterization, and Applications.

This study presents the synthesis, characterization, and application of multifunctional PAMAM G2 and G4 dendrimers decorated with a linear fluorinated guanidino linker designed to improve gene delivery efficiency while minimizing cytotoxicity. For the first time, we were able to fine-tune the degree of grafting (DG) during the functionalization process through efficient "click" Michael addition, achieving the synthesis of a collection of six PAMAM conjugates that showed a significant enhancement in transfection efficiency (TE), surpassing the performance of traditional nonviral vectors. The incorporation of fluorinated moieties not only facilitated better deoxyribonucleic acid (DNA) condensation and TE but also introduced potential applications in F magnetic resonance imaging thanks to the sharp and intense fluorine nuclear magnetic resonance signals and favorable relaxation parameters.

Host-Guest Interactions Facilitated by Chalcogen Bonding within Selenadiazole Functionalised Porphyrin Nanotubes.

The structural rigidity of tetrakis(4-pyridyl)porphyrin (TPyP) has been utilised to prepare a robust novel porous coordination polymer of composition Cd(TPyP)(sez) (TPyP=5,10,15,20-tetra(4-pyridyl)porphyrin, sez=1,2,5-benzoselenadiazole-5-carboxylate). The coordination polymer may be described as a hexagonal porphyrin nanotube (PNT) and has the potential to bind guest molecules through chalcogen bonding. Single crystal X-ray diffraction (SCXRD) data indicate an internal pore diameter ~9 Å which represents ~35 % of the crystal volume.

Differentials in lifestyle practices and determinants among hypertensive adults from three geopolitical zones in Nigeria.

Introduction: hypertension is a major public health problem globally. The occurrence has been associated with unhealthy lifestyles (such as high salt consumption, physical inactivity, excessive intake of alcohol and unhealthy diet), which are very critical for hypertension control. The study was conducted to assess the lifestyle practices and their determinants among adults with hypertension in Nigeria.

Classification of breast cancer histopathology images using a modified supervised contrastive learning method.

Deep neural networks have reached remarkable achievements in medical image processing tasks, specifically in classifying and detecting various diseases. However, when confronted with limited data, these networks face a critical vulnerability, often succumbing to overfitting by excessively memorizing the limited information available. This work addresses the challenge mentioned above by improving the supervised contrastive learning method leveraging both image-level labels and domain-specific augmentations to enhance model robustness.

Unveiling exosomes: Cutting-edge isolation techniques and their therapeutic potential.

Exosomes are one type of nanosized membrane vesicles with an endocytic origin. They are secreted by almost all cell types and play diverse functional roles. It is essential for research purposes to differentiate exosomes from microvesicles and isolate them from other components in a fluid sample or cell culture medium.

Deep Circumflex Iliac Artery Osteoseptocutaneous Flap as a Reconstruction Method for Distal Radius Recurrent Giant Cell Tumour in the Case of a Bilateral Peroneal Magna Artery: An Eight-Year Follow-Up.

A vascularized fibula flap is an option to reconstruct osseous and soft tissue defects involving distal radius malignancy with massive soft tissue involvement. This reconstruction method is a strong anatomical construct for wrist arthrodesis and flexible septocutaneous tissue for closure. However, in rare cases of bilateral peroneal magna artery, a vascularized fibula flap is not a suitable option given its potential risk of limb ischemia.

The effect of Brucella abortus on glial activation and cell death in adult male rat's hippocampus.

A zoonotic disease called brucellosis can cause flu-like symptoms and heart inflammation. The bacteria responsible for this disease can also enter the brain, causing a condition called neurobrucellosis that can result in long-term neurological problems. In this study, researchers aimed to determine the changes in the hippocampal cells of rats infected with Brucella.

Enhancing bone regeneration: Unleashing the potential of magnetic nanoparticles in a microtissue model.

Bone tissue engineering addresses the limitations of autologous resources and the risk of allograft disease transmission in bone diseases. In this regard, engineered three-dimensional (3D) models emerge as biomimetic alternatives to natural tissues, replicating intracellular communication. Moreover, the unique properties of super-paramagnetic iron oxide nanoparticles (SPIONs) were shown to promote bone regeneration via enhanced osteogenesis and angiogenesis in bone models.

Cardiac tissue engineering: an emerging approach to the treatment of heart failure.

Heart failure is a major health problem in which the heart is unable to pump enough blood to meet the body's needs. It is a progressive disease that becomes more severe over time and can be caused by a variety of factors, including heart attack, cardiomyopathy and heart valve disease. There are various methods to cure this disease, which has many complications and risks.

Low-Dose Triple-Pill vs Standard-Care Protocols for Hypertension Treatment in Nigeria: A Randomized Clinical Trial.

Importance: With the high burden of hypertension in sub-Saharan Africa, there is a need for effective, safe and scalable treatment strategies.

Objective: To compare, among Black African adults, the effectiveness and safety of a novel low-dose triple-pill protocol compared with a standard-care protocol for blood pressure lowering.

Design And Setting: Randomized, parallel-group, open-label, multicenter trial conducted in public hospital-based family medicine clinics in Nigeria.

Variation in secondary prevention of coronary heart disease: the INTERASPIRE study.

Background And Aims: INTERASPIRE is an international study of coronary heart disease (CHD) patients, designed to measure if guideline standards for secondary prevention and cardiac rehabilitation are being achieved in a timely manner.

Methods: Between 2020 and 2023, adults hospitalized in the preceding 6-24 months with incident or recurrent CHD were sampled in 14 countries from all 6 World Health Organization regions and invited for a standardized interview and examination. Direct age and sex standardization was used for country-level prevalence estimation.

Dual Antibiotic Approach: Synthesis and Antibacterial Activity of Antibiotic-Antimicrobial Peptide Conjugates.

In recent years, bacterial resistance to conventional antibiotics has become a major concern in the medical field. The global misuse of antibiotics in clinics, personal use, and agriculture has accelerated this resistance, making infections increasingly difficult to treat and rendering new antibiotics ineffective more quickly. Finding new antibiotics is challenging due to the complexity of bacterial mechanisms, high costs and low financial incentives for the development of new molecular scaffolds, and stringent regulatory requirements.

deliVERy of optimal blood pressure coNtrol in afrICA (VERONICA)-Nigeria study: Rationale and design of a randomized clinical trial.

Background: Blood pressure (BP) control among treated patients in Africa is very suboptimal, with low levels of combination therapy use and therapeutic inertia being among the major barriers to effective control of hypertension. The VERONICA-Nigeria study aims to evaluate, among Black African adults with hypertension, the effectiveness and safety of a triple pill-based treatment protocol compared to Nigeria hypertension treatment protocol (standard care protocol) for the treatment of hypertension.

Methods: This study involves a randomized, parallel-group and open-label trial.

Bromelain decreases oxidative stress and Neuroinflammation and improves motor function in adult male rats with cerebellar Ataxia induced by 3-acetylpyridine.

Bromelain is a plant-based molecule with antioxidant, antithrombotic, anticancer, and anti-inflammatory properties. Bromelain has been shown to reduce the release of inflammatory cytokines. This study aimed to determine whether bromelain can prevent ataxia in rats caused by 3-acetylpyridine (3-AP).

The effects of simvastatin-loaded nanoliposomes on human multilineage liver fibrosis microtissue.

In this in vitro study, for the first time, we evaluate the effects of simvastatin-loaded liposome nanoparticles (SIM-LipoNPs) treatment on fibrosis-induced liver microtissues, as simvastatin (SIM) has shown potential benefits in the non-alcoholic fatty liver disease process. We developed multicellular liver microtissues composed of hepatic stellate cells, hepatoblastoma cells and human umbilical vein endothelial cells. The microtissues were supplemented with a combination of palmitic acid and oleic acid to develop fibrosis models.

miRNAs that regulate apoptosis in breast cancer and cervical cancer.

In today's world, one of the main problems is cancer, which still has a long way to go to cure it, and it brings a lot of financial and emotional costs to the people of society and governments. Breast cancer (BC) and cervical cancer (CC), two of the most common cancers, are caused by several genetic and environmental factors in women. These two cancers' involvement rate is higher than other cancers in women.