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2022 ◽  
Vol 12 ◽  
Author(s):  
Neel H. Mehta ◽  
Jonah Sherbansky ◽  
Angela R. Kamer ◽  
Roxana O. Carare ◽  
Tracy Butler ◽  
...  

The human brain functions at the center of a network of systems aimed at providing a structural and immunological layer of protection. The cerebrospinal fluid (CSF) maintains a physiological homeostasis that is of paramount importance to proper neurological activity. CSF is largely produced in the choroid plexus where it is continuous with the brain extracellular fluid and circulates through the ventricles. CSF movement through the central nervous system has been extensively explored. Across numerous animal species, the involvement of various drainage pathways in CSF, including arachnoid granulations, cranial nerves, perivascular pathways, and meningeal lymphatics, has been studied. Among these, there is a proposed CSF clearance route spanning the olfactory nerve and exiting the brain at the cribriform plate and entering lymphatics. While this pathway has been demonstrated in multiple animal species, evidence of a similar CSF egress mechanism involving the nasal cavity in humans remains poorly consolidated. This review will synthesize contemporary evidence surrounding CSF clearance at the nose-brain interface, examining across species this anatomical pathway, and its possible significance to human neurodegenerative disease. Our discussion of a bidirectional nasal pathway includes examination of the immune surveillance in the olfactory region protecting the brain. Overall, we expect that an expanded discussion of the brain-nose pathway and interactions with the environment will contribute to an improved understanding of neurodegenerative and infectious diseases, and potentially to novel prevention and treatment considerations.


Author(s):  
Andrew J. Woerner ◽  
Guy E. Johnson

Hepatocellular carcinoma remains a prominent cause of cancer-related mortality globally. Transarterial yttrium-90 radioembolization is a versatile therapy and plays an important role in the treatment of hepatocellular carcinoma. This review summarizes the establishment of radioembolization in the hepatocellular carcinoma treatment paradigm, treatment considerations across cancer stages, and recent advances in evidence.


2021 ◽  
pp. 014544552110649
Author(s):  
Vincent B. Van Hasselt ◽  
Michael L. Bourke ◽  
Bailee B. Schuhmann

The past decade has witnessed burgeoning interest and concern regarding the mental health of firefighters. This increased attention is due, in part, to research documenting higher rates of psychiatric problems, including depression, substance abuse, sleep disturbances, posttraumatic stress disorder, and suicidality in fire rescue personnel compared to civilians. Similarly, the National Institute for Occupation Safety and Health (2014) has identified disturbingly elevated rates of physical health difficulties in firefighters, most notably high blood pressure, coronary heart disease, death due heart attacks, as well as different forms of cancer. Despite the heightened awareness of the mental and physical health challenges in this population, behavioral research specifically targeting firefighters is limited. With this is mind, we asked prominent researchers and clinicians working in this area to present results of their early investigative efforts in our Special Issue on “Behavioral Approaches with Firefighters”. In this Introduction, we provide brief summaries of the studies comprising the Issue. Articles in this issue address topics of sleep, PTSD, substance use, physical health concerns, and provide assessment and treatment considerations. A primary goal of the Issue is to stimulate further behavioral research with this group of deserving yet underserved first responders. Moreover, the Issue serves as a tribute to the men and women of the fire service who dedicate and risk their lives to serve their community.


2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 527-528
Author(s):  
Rebecca Allen ◽  
Candice Reel

Abstract We examined the relationship of reported childhood trauma and PTSD symptoms in a sample (N = 105) of individuals aged 19 to 80 receiving treatment for substance use and opioid use disorders in federally qualified health centers. Fifty-two percent of the sample was age 39 or younger, 30% were in their 40s and 18% were aged 50 and older. Thirty-two percent did not graduate high school and 36% had a high school education or equivalent. Seventy percent reported experiencing adverse childhood experiences (ACES). Although harmful alcohol use was low, 83% of the sample reported substantial or severe substance use, with 41% of the total reporting opioid use. ACES predicted current PTSD symptoms. Telehealth treatment considerations include: 1) internet access, 2) health and mental health literacy, and 3) monitoring for dissociation when using mindfulness-based relapse prevention treatment.


2021 ◽  
pp. 1-9
Author(s):  
Fabio A. Frisoli ◽  
Visish M. Srinivasan ◽  
Joshua S. Catapano ◽  
Robert F. Rudy ◽  
Candice L. Nguyen ◽  
...  

OBJECTIVE Vertebrobasilar dissecting (VBD) aneurysms are rare, and patients with these aneurysms often present with thromboembolic infarcts or subarachnoid hemorrhage (SAH). The morphological nature of VBD aneurysms often precludes conventional clip reconstruction or coil placement and encourages parent artery exclusion or endovascular stenting. Treatment considerations include aneurysm location along the vertebral artery (VA), the involvement of the posterior inferior cerebellar artery (PICA), and collateral blood flow. Outcomes after endovascular treatment have been well described in the neurosurgical literature, but microsurgical outcomes have not been detailed. Patient outcomes from a large, single-surgeon, consecutive series of microsurgically managed VBD aneurysms are presented, and 3 illustrative case examples are provided. METHODS The medical records of patients with dissecting aneurysms affecting the intracranial VA (V4), basilar artery, and PICA that were treated microsurgically over a 19-year period were reviewed. Patient demographics, aneurysm characteristics, surgical procedures, and clinical outcomes (according to modified Rankin Scale [mRS] scores at last follow-up) were analyzed. RESULTS Forty-two patients with 42 VBD aneurysms were identified. Twenty-six aneurysms (62%) involved the PICA, 14 (33%) were distinct from the PICA origin on the V4 segment of the VA, and 2 (5%) were located at the vertebrobasilar junction. Thirty-four patients (81%) presented with SAH with a mean Hunt and Hess grade of 3.2 at presentation. Six (14%) of the 42 patients had been previously treated using endovascular techniques. Nineteen aneurysms (45%) underwent clip wrapping, 17 (40%) were treated with bypass trapping, and 6 (14%) underwent parent artery sacrifice. The complete aneurysm obliteration rate was 95% (n = 40), and the surgical complication rate was 7% (n = 3). The 8 patients with unruptured VBD aneurysms were significantly more likely to be discharged home (n = 6, 75%) compared with 34 patients with ruptured aneurysms (n = 9, 27%; p = 0.01). Good outcomes (mRS score ≤ 2) were observed in 20 patients (48%). Eight patients (19%) died. CONCLUSIONS These data demonstrate that patients with VBD aneurysms often present after a rupture in poor neurological condition, but favorable results can be achieved with open microsurgical repair in almost half of such cases. Microsurgery remains a viable treatment option, with the choice between bypass trapping and clip wrapping largely dictated by the specific location of the aneurysm and its relationship to the PICA.


Author(s):  
José F. Siqueira ◽  
Isabela N. Rôças ◽  
Sandra R. Hernández ◽  
Karen Brisson-Suárez ◽  
Alessandra C. Baasch ◽  
...  

2021 ◽  
Vol 12 ◽  
Author(s):  
Stefan Kopf ◽  
Varun Kumar ◽  
Zoltan Kender ◽  
Zhe Han ◽  
Thomas Fleming ◽  
...  

Patients with diabetes are over-represented among the total cases reported with “idiopathic” pulmonary fibrosis (IPF). This raises the question, whether this is an association only or whether diabetes itself can cause pulmonary fibrosis. Recent studies in mouse models of type 1 and type 2 diabetes demonstrated that diabetes causes pulmonary fibrosis. Both types of diabetes trigger a cascade, starting with increased DNA damage, an impaired DNA repair, and leading to persistent DNA damage signaling. This response, in turn, induces senescence, a senescence-associated-secretory phenotype (SASP), marked by the release of pro-inflammatory cytokines and growth factors, finally resulting in fibrosis. Restoring DNA repair drives fibrosis into remission, thus proving causality. These data can be translated clinically to patients with type 2 diabetes, characterized by long-term diabetes and albuminuria. Hence there are several arguments, to substitute the term “idiopathic” pulmonary fibrosis (IPF) in patients with diabetes (and exclusion of other causes of lung diseases) by the term “diabetes-induced pulmonary fibrosis” (DiPF). However, future studies are required to establish this term and to study whether patients with diabetes respond to the established therapies similar to non-diabetic patients.


2021 ◽  
Vol 22 (23) ◽  
pp. 12628
Author(s):  
Sidrah Shah ◽  
Rachelle Rachmat ◽  
Synthia Enyioma ◽  
Aruni Ghose ◽  
Antonios Revythis ◽  
...  

Prostate cancer ranks fifth in cancer-related mortality in men worldwide. DNA damage is implicated in cancer and DNA damage response (DDR) pathways are in place against this to maintain genomic stability. Impaired DDR pathways play a role in prostate carcinogenesis and germline or somatic mutations in DDR genes have been found in both primary and metastatic prostate cancer. Among these, BRCA mutations have been found to be especially clinically relevant with a role for germline or somatic testing. Prostate cancer with DDR defects may be sensitive to poly(ADP-ribose) polymerase (PARP) inhibitors which target proteins in a process called PARylation. Initially they were used to target BRCA-mutated tumor cells in a process of synthetic lethality. However, recent studies have found potential for PARP inhibitors in a variety of other genetic settings. In this review, we explore the mechanisms of DNA repair, potential for genomic analysis of prostate cancer and therapeutics of PARP inhibitors along with their safety profile.


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