A bioprinted sea-and-island multicellular model for dissecting human pancreatic tumor-stroma reciprocity and adaptive metabolism.

Pancreatic ductal adenocarcinoma (PDAC) presents a formidable clinical challenge due to its intricate microenvironment characterized by desmoplasia and complex tumor-stroma interactions. Conventional models hinder studying cellular crosstalk for therapeutic development. To recapitulate key features of PDAC masses, this study creates a novel sea-and-island PDAC tumor construct (s&i PTC).

Beta blockers are associated with lower all-cause mortality among HFpEF patients.

Background: The evidence regarding beta blocker (BB) benefit in heart failure with preserved ejection fraction (HFpEF) remains inconclusive, leading to consideration of BB withdrawal in this population.

Objectives: In this study, we retrospectively analyzed the association of BB on all-cause mortality in HFpEF patients.

Methods: This is a single-center retrospective cohort study of 20,206 patients with left ventricular ejection fraction (EF) ≥ 50% who were hospitalized with decompensated HF between January 2011 and March 2020.

Extruded Screw From Cervical Spine Hardware Causing Vocal Fold Paralysis.

Dysphonia and dysphagia are often observed among patients presenting to the otolaryngology clinic. One of the more common etiologies includes iatrogenic injury to the recurrent laryngeal nerve (RLN) as a known complication of head and neck surgeries such as thyroidectomy or anterior approaches to the cervical spine. Most often, RLN injury occurs in this context due to traction or transection of the nerve.

Hyperaldosteronism Presenting With Unilateral Blindness: A Case Report.

Hyperaldosteronism is a common cause of secondary hypertension. It has been classically associated with the clinical triad of hypertension, unexplained hypokalemia, and metabolic alkalosis. We present a case of a 66-year-old man who experienced blindness, hypokalemia, and hypertension that was resistant to anti-hypertension medications.

Long-Term Effects of Antiseizure Medications.

Most patients with epilepsy will benefit from seizure control with one of an array of chronic antiseizure medications. Knowledge of the potential long-term effects of these medications is critical to prevent adverse consequences on overall health. Antiseizure medications vary in their capacities to affect the brain and peripheral nerves, hormones, bone mineralization, cardiovascular risk, renal health, hepatic, hematological, and dermatological systems.

Acquired Reactive Perforating Collagenosis Occurring in Association With Nonred Ink Tattoo.

Perforating dermatosis is a group of skin conditions in which there is transdermal elimination of collagen, elastic fibers, or other dermal connective tissue. Perforating dermatosis can be genetic or acquired, known as acquired perforating dermatosis (APD). When collagen is the primary extruded material in acquired cases, the disease is designated as acquired reactive perforating collagenosis (RPC).

Leukemia Cutis With Histopathologic and Immunophenotypic Features Resembling S100-Negative CD1a-Positive Cutaneous Histiocytosis.

S100-negative CD1a-positive cutaneous histiocytosis is an exceedingly rare histiocytosis that is defined histopathologically by a dense dermal infiltrate of ovoid mononuclear cells with grooved nuclei and ample cytoplasm with variable nuclear atypia and mitoses that are immunohistochemically positive for CD1a and negative for S100 and CD207 (langerin). The histogenesis of S100-negative CD1a-positive histiocytosis is unclear, and its precursor cell has yet to be characterized. Although all cases thus far have been described as benign and occasionally self-resolving, the clinical course and outcome of this disease are not fully understood.

The impact of sexual self-concept ambiguity on alcohol approach bias and consumption.

The current work sought to examine both intra-individual and situational features that can predict heightened alcohol misuse among individuals who report sexual-orientation self-concept ambiguity (SSA). It was hypothesized that situations that evoke the salience of individuals' sexuality will contribute to alcohol misuse among individuals who report heightened SSA. In the first experiment, fifty-nine students were recruited from psychology subject pools at two large state universities.

Evaluation of transversus abdominis plane block for renal transplant recipients - A meta-analysis and trial sequential analysis of published studies.

Background: Patients undergoing renal transplant (RT) have altered drug/opioid pharmacokinetics. Transversus abdominis plane (TAP) block in renal transplant recipients has been recently evaluated for analgesic and opioid-sparing potential by many trials.

Methodology: The studies comparing TAP-block to conventional analgesic regimens for RT were searched.

Heart Rate and Blood Pressure Responses to Gear Weight Under a Controlled Workload.

Objective: To compare the effects of personal protective equipment (PPE) weight on blood pressure (BP) and heart rate (HR), between volunteer firefighters (FF) and athletes.

Methods: Athletes and FF were matched by body size and came to the lab twice for two treadmill tests. The "Regular" test was completed in normal fitness clothing, and PPE test was completed in full structural PPE with monitoring of HR assessment every minute and BP each stage.

Erratum: ScaphoLunate Axis Method.

[This corrects the article DOI: 10.1055/s-0035-1570744.].

ScaphoLunate Axis Method.

Background Treating chronic scapholunate ligament injuries without the presence of arthritis remains an unsolved clinical problem facing wrist surgeons. This article highlights a technique for reconstructing the scapholunate ligament using novel fixation, the ScaphoLunate Axis Method (SLAM). Materials and Methods In a preliminary review of the early experience of this technique, 13 patients were evaluated following scapholunate ligament reconstruction utilizing the SLAM technique.

Presence of bacteria in failed anterior cruciate ligament reconstructions.

Background: Novel microbial detection technologies have revealed that chronic bacterial biofilms, which are recalcitrant to antibiotic treatment, are common in failed orthopedic procedures.

Questions: Are bacteria present on failed anterior cruciate ligament (ACL) reconstructions? Is there a difference in the presence or nature of bacteria in failed ACL reconstructions relative to a control set of healthy ACL's?

Methods: We used a case-control study design, where we analyzed the bacterial composition of 10 failed ACL reconstructions and compared it to 10 native ACL's harvested during total knee arthroplasty. The IBIS Universal Biosensor was used to determine the nature of bacteria on ACL specimens, and fluorescent in situ hybridization (FISH) was used to visualize bacteria in a subset of cases.

N-acetylcysteine treats intravenous amiodarone induced liver injury.

We report a case of intravenous (IV) amiodarone drug induced liver injury (DILI). The patient received IV N-acetylcysteine (NAC) which resulted in a rapid improvement in liver enzymes. While the specific mechanisms for the pathogenesis of IV amiodarone DILI and the therapeutic action of IV NAC are both unknown, this case strongly implies at least some commonality.