Halloysite nanotubes (HNTs) are hollow clay nanotubes in the nanometer size range, made up of double-layered aluminum silicate mineral layers. HNTs represent an extremely versatile, safe, and biocompatible nanomaterial, used in a wide range of applications in biomedicine and nanomedicine. For example, they are used as transporters for the controlled release of drugs or genes, in tissue engineering, in the isolation of stem cells and cancer cells, and in bioimaging. Consequently, the assessment of the biocompatibility of HNTs has acquired considerable importance. In recent years, HNT composites have attracted attention due to their improved biocompatibility, compared to HNTs, suggesting potential for applications in tissue engineering or as vehicles for drugs or genes. In this review, recent advances in the application of HNTs and HNT composites in biomedicine are discussed to provide a valuable guide to scientists in the design and development of viable, functional bio-devices for biomedical applications.

From nearly any perspective and metric, the effects of malaria on the African continent have been persistent and deep. By focusing on the malady of malaria and the last century of biomedical interventions, Graboyes and Alidina raise critical historical, ethical, and scientific questions related to truth telling, African autonomy, and the obligations of foreign researchers. They provide a condensed history of malaria activities on the continent over the past 120 years, highlighting the overall history of failures to eliminate or control the disease. A case study of the risks of rebound malaria illustrates the practical and moral problems that abound when historical knowledge is ignored. In light of current calls for renewed global eradication efforts, Graboyes and Alidina provide evidence for why historical knowledge must be better integrated into global health epistemic realms.

Media coverage of dementia can influence public and professional attitudes towards the syndrome, shaping societal knowledge of dementia and impacting how people with dementia are cared for. This paper reports on a study of news articles about dementia published in the British press in the years 2012–2017. The analysis combines the tools of corpus linguistics, a methodology for quantitatively surveying a vast amount of electronic linguistic data, with the qualitative perspectives of Critical Discourse Analysis, which seeks to uncover dominant discourses and ideologies. The most salient discourse that emerged from this analysis was the portrayal of dementia in biomedical terms, with a particular focus on the pathological processes of dementia, and pharmaceutical treatments and research. Keywords relating to this discourse are interrogated in detail, illuminating the linguistic strategies through which the pathology of dementia and people with dementia are depicted. This study highlights the challenges that this type of reporting presents to people living with dementia and their families, and points to the relevance of a discursive approach to understanding societal perceptions of dementia.

All militaries try to develop a “winning edge” in warfare. More often than not these attempts focus on new weapons systems and weapons platforms, on new ways of maximizing the offensive capabilities of a military through firepower. These attempts can also involve the training and development of soldiers, including performance enhancements to make them fight better, longer, and smarter than the enemy and to counter human frailty on the battlefield. These concerns and problems have long held the interest of the U.S. military. This article traces the development, rationale, and legacy of one such attempt to deal with human frailty and the “body problem,” a kind of military futurism devised at the peak of the Cold War. Dr. Marion Sulzberger envisioned creating soldiers who had their own kind of special “biological armor,” or what he termed “idiophylaxis.” In 1962, he presented a paper at the Army Science Conference at West Point titled “Progress and Prospects in Idiophylaxis (Built-In Individual Self-Protection of the Combat Soldier).” Sulzberger's call was for a radical rethinking of the combat soldier and the ways in which soldiers were imagined, designed, and developed. His goal was to “armor” the individual soldier both internally and psychologically through new forms of biomedicine and biotechnology. The interventions he detailed in 1962 live on today in the U.S. military's soldier performance enhancement research programs, including DARPA's recent “Inner Armor” program and desire to make “kill-proof” soldiers.

Neuroscientific interventions are increasingly proposed as solutions for social problems, beyond their application in biomedicine. For example, there is increasing interest, particularly from outside commentators, in harnessing neuroscientific advances as an alternative method of punishing criminal offenders. Such neuropunishments are seen as a potentially more effective, less costly, and more humane alternative to incarceration, with overall better results for offender, communities, and societies. This article considers whether neuroscience as a field should engage more actively with such proposals, and whether more research should be done to explore the use of neurointerventions for punishment. It concludes that neuroscientists and those working at the intersection of neuroscience and the clinic should actively shape these debates.

Natural zeolites have traditionally been used as supplements in animal nutrition with positive effects in terms of either faster growth or reduced incidence of diseases and death. The discovery that natural zeolites may act as drugs or coadjutants in pharmaceutical preparations has greatly enlarged the field of their applications in many sectors of biology and medicine, opening unexpected horizons for either basic or applied research. This review updates the state of the art of research in this sector, focusing on clinoptilolite-rich materials, with two main purposes: (1) trying to rationalize this subject, which is extremely variable and heterogeneous, and (2) raising doubts about unsuitable uses of natural zeolites in the light of their known properties and expected behaviour.

Recent advancement of inorganic dissolvable electronics nucleates around a realization that single-crystal silicon nanomembrane undergoes hydrolysis in biologically relevant conditions. The silicon-based high-performance dissolvable electronic devices are initially conceived for biomedical implants that function for a programmed timeframe followed by a complete dissolution to eliminate the need for recollection. The technology developed for biomedicine also presents unique opportunities in security devices that physically destruct and in environmentally benign electronics that dissolve without a trace to reduce electronic wastes. The new class of devices with this emerging technology complements the existing efforts in organic biodegradable devices. Compatible with state-of-the-art fabrication facilities for commercial microelectronics, the technology has a huge potential for future commercialization. This mini review will first discuss the relevant materials for the inorganic dissolvable electronics and then present the demonstrated applications in functional devices, followed by a perspective for the future developments.

Y2O3 and Gd2O3 upconversion nanoparticles (UCN) co-doped with Yb3+ and Er3+ can absorb and upconvert near infrared (NIR) radiation into visible light. These UCN find application in bioimaging, as an important tool to diagnose and visualize cancer cells. The UCN can be used as biolabels to identify the cells; the nanoparticles can be coated and functionalized with ligands that bind to receptors on the surface of the cell. In this project, the UCN were synthesized by sol-gel method and subsequently coated with a thin silica shell by using the Stöber method. The core-shell UCN were functionalized with amine group to enable folic acid conjugation. The functionalized core-shell nanoparticles were analyzed by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and luminescence measurements. Concentrations of bare and coated/functionalized UCN between 0.001 µg/mL and 1 µg/mL were tested on two different cell lines from human cervix carcinoma (HeLa) and human colorectal adenocarcinoma (DLD-)1 with colorimetric assay based on the MTT reagent (methy-134 thiazolyltetrazolium). The results show good luminescence spectra on all core-shell UCN. The MTT assays show that some concentrations of bare UCN of Y2O3: Er, Yb (1%, 1% mol) and Gd2O3 were cytotoxic for cervical adenocarcinoma cells (HeLa). For human colorectal adenocarcinoma all UCN are non-cytotoxic. The UCN with silica-aminosilane functionalization (APTS/TEOS) were non-cytotoxic on both cell lines.

This paper explores evolving conceptions and depictions of the human genome among human and medical geneticists during the postwar period. Historians of science and medicine have shown significant interest in the use of informational approaches in postwar genetics, which treat the genome as an expansive digital data set composed of three billion DNA nucleotides. Since the 1950s, however, geneticists have largely interacted with the human genome at the microscopically visible level of chromosomes. Mindful of this, I examine the observational and representational approaches of postwar human and medical genetics. During the 1970s and 1980s, the genome increasingly came to be understood as, at once, a discrete part of the human anatomy and a standardised scientific object. This paper explores the role of influential medical geneticists in recasting the human genome as being a visible, tangible, and legible entity, which was highly relevant to traditional medical thinking and practice. I demonstrate how the human genome was established as an object amenable to laboratory and clinical research, and argue that the observational and representational approaches of postwar medical genetics reflect, more broadly, the interdisciplinary efforts underlying the development of contemporary biomedicine.

Over the past two decades, public interest in the basic biological processes underlying the phenomenon of ageing has grown considerably. New developments in biotechnology and health maintenance programmes appear to be forging new relationships between biology, medicine and the lives of older people. A number of social scientists describe the process as the ‘biomedicalization of aging’. In this article, we argue that contemporary biogerontology, an important sub-field of gerontology that could be construed as the primary actor in the process of ‘biomedicalization’, should be regarded instead as advancing a critique of biomedicine. We then provide a genealogy of the critique and close the argument by pointing to sources of uncertainty within biogerontology, which should be taken into account in any further studies of the relationship between biology, medicine and the lives of older people.

Many factors, including the increasing commercialization of biomedicine, have caused medical practice to be increasingly divorced from the practice of caregiving. In this article, the authors argue that the two must be reunited in multiple ways if we are to have a just and compassionate healthcare and medical practice.

‘Racial’ or ‘ethnic’ drugs, a product of the new genetics and its mapping of genomes and populations, are now being developed and manufactured on a large scale. This article focuses on the conceptualization and identification of genetic signatures at the population level, many of which, I argue, evoke the ancient and quite common folk idiom of bodily inscription—in particular, fingerprints and birthmarks. The current geneticization of ‘colour’ and the biosociality engendered by it, I suggest, invite critical rethinking of the concept of insular populations and the distinction between bodily surface and deep structures (phenotype and genotype). While the new genetics has shifted the conceptual ground for discussions of human variation, moving away from phenotypic traits such as markings of the skin, drawing attention to what some molecular biologists refer to as the ‘universe within’, the notion of racial difference is repeatedly reinvented along familiar lines, under the banner of populations studies. I argue that, although human variation is both a legitimate and important subject in its own right and some approaches to variation do a better job than others, researchers need to be attentive to their assumptions about sampling. Circularity and subjectivity seem to be inevitable parts of the exploration of human diversity, and sampling cannot take place without a subjective, pragmatic judgment about how to proceed.