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Neural substrates of memory, affective functions, and conscious experience.

This review presents an account of the areas and circuits of the brain that are thought to be involved in such cognitive functions as memory, affect and consciousness. Considerable progress has been made in the past two decades in the identification of the cerebral areas and in our understanding of the brain mechanisms involved in these functions, thanks in large parts to a number of imaging observations (PET and fMRI), together with many clinical neurological and experimental studies. Thus, there is now convincing evidence that these high level functions are represented in a complex organizat

Fundamental structural aspects and features in the bioengineering of the gas exchangers: comparative perspectives.

Over its life, an organism's survival and success are determined by the inventory of vital adaptations that its progenitors have creatively appropriated, devised and harnessed along the evolutionary pathway. Such conserved attributes provide the armamentarium necessary for withstanding the adverse effects of natural selection. Refinements of the designs of the respiratory organs have been critical for survival and phylogenetic advancement of animal life. Gas exchangers have changed in direct response to the respiratory needs of whole organisms in different environmental states and conditions.

Carbohydrate expression in the intestinal mucosa.

UNLABELLED: The understanding of mechanisms responsible for alterations in mucin synthesis and secretions is essential in elucidating the aetiology of intestinal disorders. The existence of distinct mucins and M-cell transport mechanisms, and their beneficial effects, have long been recognised. Since nutritional and bacterial factors alter the mucin characteristics and are relevant to planning preventative strategies for intestinal diseases, the studies described in this monograph were designed to test the hypothesis that mucin composition and endocrine status of the intestinal tract are alter

The pineal organ, its hormone melatonin, and the photoneuroendocrine system.

The vertebrate pineal organ rhythmically synthesizes and secretes melatonin during nighttime and forms an essential component of the photoneuroendocrine system which allows humans and animals to measure and keep the time. Regulation of the melatonin biosynthesis depends on signals from photoreceptors perceiving and transmitting environmental light stimuli and endogenous oscillators generating a circadian rhythm which is independent from any environmental time cue (zeitgeber). In nonmammalian species the photoreceptors responsible for regulating melatonin biosynthesis reside within the pineal o

The efferent system of cranial nerve nuclei: a comparative neuromorphological study.

A number of inconsistencies and controversies are inherent in the classification of cranial nerve nuclei based on the concepts of the various head-theories. The assumption of head segmentation, which is common to these theories, serves as the basis for designating the dorsomedial nuclei as the somatomotor column, although they innervate striated muscles of a viscus and a specific sense organ. The ventrolateral nuclei are called the specific visceromotor column; they innervate striated muscles in the branchiogenous area, but many of these muscles insert on skeletal elements. A series of compara

The human substantia nigra and ventral tegmental area. A neuroanatomical study with notes on aging and aging diseases.

The present study comprises a cytoarchitectonic analysis of the human substantia nigra (SN) and ventral tegmental area (VTA); a discussion of their chemoarchitecture and fiber connections (mainly based on tract-tracing studies in primates) preceded by an overview of the wealth of tract-tracing data in rodents; a discussion of the involvement of the SN/VTA complex in Parkinson's disease (PD) and related disorders and in Alzheimer's disease (AD), including some quantitative data; and finally, some functional and pathophysiological considerations, relating nigral organization to pathophysiology a

[Biomechanics of the jaw apparatus in the horn-shark (Heterodontus portusjacksoni = Heterodontus philippi)].

The constructional morphology of the jaw apparatus in the horn-shark Heterodontus has been investigated. The origines and insertions of the jaw muscles have been delimited and the lines of action were determined. The individual muscles have been weighed, in order to get on the basis of their masses an estimate of the forces which are exerted by the components of the jaw musculature. The mandibular joints, the occlusion of the jaws, morphological details of the upper and lower jaws as well as the "subodontium" have been subject to macroscopic and microscopic study. The joint between palatoquadr

The two-shot protocol. A randomized controlled trial of a novel two-injection ovarian stimulation strategy.

STUDY QUESTION: Is the number of MII (metaphase II) oocytes comparable in the two-shot protocol versus the conventional corifollitropin alfa (CFA) followed by follitropin-beta protocol? SUMMARY ANSWER: Although the mean number of MII oocytes did not differ significantly between the two-shot protocol and the control group, non-inferiority was not statistically met. WHAT IS KNOWN ALREADY: Controlled ovarian stimulation (COS) protocols are often associated with significant side effects, largely due to the burden of multiple daily injections. Efforts to develop more patient-friendly protocols in

An Optimal Approach for Laparoscopic D3 Lymphadenectomy Plus Complete Mesocolic Excision (D3+CME) for Right-Sided Colon Cancer.

BACKGROUND: It is common knowledge that high ligation of blood vessels at the D3 level and complete mesocolic excision (CME) are two critical points of right hemicolectomy for right colon cancer (RCC). 1-5 To date, a safe strategy for completing these two procedures under laparoscopic surgery has not been extensively described. The authors provide a video to demonstrate laparoscopic right hemicolectomy (D3 + CME) with an optimal mesentery-defined approach. By identifying three "tri-junctions," this approach facilitates dissection of the entire mesocolon along the embryologic planes as far cent

Access to Fertility Preservation Counselling for Young Women with Haematological Malignancies: Incidence-Adjusted Trends from the Italian PreFerIta Network (2015-2023).

Background: Preserving fertility in young women with cancer is crucial for comprehensive care. Based on GBD 2023 estimates, approximately 1000 women aged 15-39 are diagnosed with haematological malignancies annually in Italy. Guidelines recommend timely fertility preservation (FP) counselling for all at-risk patients, yet real-world access data remain limited. Methods: This multicentre, retrospective observational study analysed FP counselling for women aged 15-39 with haematological malignancies from 2015 to 2023. Counselling data were extracted from the Italian Assisted Reproductive Technolo

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… International guidelines, including those from the European Society of Human Reproduction and Embryology (ESHRE) and the American Society of Clinical Oncology (ASCO), emphasise the importance of informing all young cancer patients about their fertility preservation options before initiating gonadotoxic … Abbreviations The following abbreviations are used in this manuscript: ART Assisted Reproductive Technology ASCO American Society of Clinical Oncology AYA Adolescents and Young Adults CI Confidence Interval COVID-19 Coronavirus Disease 2019 ESHRE European Society of Human Reproduction and Embryology …

Extracellular Vesicles in Implantation: Cross-Talk Between the Embryo and Endometrium.

Extracellular vesicles (EVs), including exosomes and microvesicles, have emerged as pivotal mediators of intercellular communication. Embryo implantation is a critical process in early pregnancy and requires communication between the embryo and maternal uterus. EVs are important in coordinating the communication between the embryo and maternal uterus. This review explores EV biogenesis, molecular composition, and functional roles during implantation. It emphasizes the dynamic role of EVs in modulating the maternal-embryo dialogue, which is critical for establishing a receptive endometrium and

Christopher Addison (1869-1951): Distinguished Anatomist and Politician.

Christopher Addison enjoyed two careers, one as an anatomist followed by that as a politician. He described the detailed topographical anatomy of the abdomen, and his name is associated with one of its key anatomical planes. His political career was influenced by his commitment to social reform and for the need for improvement in public health achieved through government intervention. He held several ministerial offices, and he was the first Minister for Health. He played important roles in the passage of the National Insurance Act 1911 and introduced the Housing and Town Planning Act 1919. Fo

Epididymosomes: Composition and Functions for Sperm Maturation.

This article provides an overview of literature pertaining to epididymosome origin, composition and their functional significance. Broadly, epididymosomes are defined as extracellular vesicles that are secreted by the epididymal epithelium and thereafter facilitate intercellular communication within the male reproductive tract. Epididymosomes fulfil this communication role via their encapsulation and delivery of a diverse macromolecular payload to recipient cells. This complex cargo includes proteins, lipids, and nucleic acids, which are delivered to maturing spermatozoa, thereby influencing t

Extracellular Vesicles, Nutrient Balance, and Redox Metabolism During Epididymal Sperm Maturation: A Perspective on the Complexity of Intercellular Interplay.

Life relies on redox reactions to sustain; however, imbalanced redox exerts stress on living beings. This is particularly pivotal as mammalian gamete sperm cells undergo functional maturation in the epididymis, preparing themselves for the long and challenging journey to begin a new life by successfully fertilizing an oocyte. Defects in epididymal sperm maturation are closely related to male infertility and reproductive health. In the epididymis, the halted translational machinery in spermatozoa while maturing in a quiescent state prompts them to immensely depend on epithelial cells for nutrit

Epigenetic Regulation of Pancreas Development and Function.

The field of epigenetics broadly seeks to define heritable phenotypic modifications that occur within cells without changes to the underlying DNA sequence. These modifications allow for precise control and specificity of function between cell types-ultimately creating complex organ systems that all contain the same DNA but only have access to the genes and sequences necessary for their cell-type-specific functions. The pancreas is an organ that contains varied cellular compartments with functions ranging from highly regulated glucose-stimulated insulin secretion in the β-cell to the pancreatic

β-Cell Regeneration Is Driven by Pancreatic Plasticity.

The pancreas has been considered a non-regenerative organ. β cells lost in diabetes are not replaced due to the inability of the pancreas to regenerate. However, ample evidence generated in the last few decades using murine models has demonstrated that the pancreas has a remarkable plasticity wherein differentiated cells can change cell fate toward a β-like cell phenotype. Although this process is observed after using rather artificial stimuli and the conversion efficiency is very limited, these findings have shed some light on novel pathways for β-cell regeneration. In this chapter, we will s