Publications by authors named "Edward Laws"

Objective: Pituitary adenomas (PAs) are common lesions that often present with endocrinopathy and/or visual symptoms. Classification of PAs has historically been based on functional status and histopathological staining of anterior pituitary hormones. In 2017, the WHO revised the classification of PAs, establishing cell lineages identified by the transcription factors (TFs) PIT1, TPIT, and SF1.

View Article and Find Full Text PDF

Purpose: The objective of this study was to characterize the clinical characteristics and factors predictive of biochemical remission in patients with symptomatic acromegaly undergoing transsphenoidal surgery (TSS) at an academic tertiary care center, as defined by the 2022 Acromegaly Consensus Conference guidelines.

Methods: In this single institution, longitudinal, retrospective study, a large cohort of 158 patients with a preoperative diagnosis of acromegaly undergoing surgery at a large, academic, tertiary care center were examined. We excluded 38 patients as IGF-1 testing was performed less than 12 weeks postoperatively.

View Article and Find Full Text PDF

The marine cyanobacterium Synecococcus sp. (CCMP 1334) was grown in a continuous culture system on a 12:12 h light:dark cycle at all combinations of low and high pCO (400 and 1000 ppmv, respectively), nutrient availability (nitrate-limited and nutrient-replete conditions), and temperatures of 21, 24, 28, 32, and 35°C. The maximum nutrient-replete growth rate was ~1.

View Article and Find Full Text PDF
Article Synopsis
  • The study aims to uncover genetic changes linked to prolactinomas, ultimately identifying a mutation (ESR1Y537S) in an aggressive case of this tumor type at Brigham and Women's Hospital.
  • A group of twenty patients was analyzed using advanced sequencing techniques, revealing the ESR1Y537S mutation in a post-menopausal woman, which is known to enhance estrogen receptor activity without needing a hormone trigger.
  • The discovery of this mutation allowed for targeted treatment with elacestrant, in combination with radiotherapy, effectively managing tumor growth and significantly lowering prolactin levels in the patient.
View Article and Find Full Text PDF

Background: Emerging research expands our understanding of the cerebellum beyond motor control to include cognitive, emotional, and autonomic functions. This review examines the cerebellum's complex role, spotlighting Schmahmann's syndrome, or cerebellar cognitive affective syndrome (CCAS), which impairs executive functions, language, and spatial processing. It emphasizes advancements in diagnosing CCAS and the imperative of developing superior diagnostic tools for managing cerebellar pathologies effectively.

View Article and Find Full Text PDF

The impact of climate warming on soil microbial communities can significantly influence the global carbon cycle. Coastal wetlands, in particular, are susceptible to changes in soil microbial community structure due to climate warming and the presence of invasive plant species. However, there is limited knowledge about how native and invasive plant wetland soil microbes differ in their response to warming.

View Article and Find Full Text PDF
Article Synopsis
  • Pituitary adenomas, categorized as functional or silent, represent around 15% of all brain tumors, with early evidence suggesting different clinical outcomes between these types.
  • A study looked at medical records from 2007-2018 of patients who had surgery for either silent pituitary adenomas (SPAs) or functional pituitary adenomas (FPAs), using statistical methods to analyze outcomes and recurrence predictors.
  • Findings showed that SPAs were generally larger, had lower total resection rates, and demonstrated a higher likelihood of recurrence and need for retreatment compared to FPAs, with factors like incomplete resection and younger age increasing risks for SPAs.
View Article and Find Full Text PDF

Background And Objectives: Intrasellar arachnoid diverticulae can often be identified on preoperative imaging in patients undergoing endoscopic transsphenoidal surgery. The objective of this study was to characterize arachnoid diverticulae both qualitatively and quantitatively in a large institutional cohort of patients with pituitary tumors and to evaluate its association with intraoperative cerebrospinal fluid (CSF) leak.

Methods: Preoperative imaging studies of 530 patients who underwent primary endoscopic transsphenoidal resection of pituitary tumors were examined both quantitatively and qualitatively for the presence of an intrasellar arachnoid diverticulum.

View Article and Find Full Text PDF

Background And Objectives: The objective of this study was to study the association among various morphological parameters and surgical outcomes in pituitary macroadenomas with suprasellar extension.

Methods: MRI studies of 160 patients undergoing endoscopic transsphenoidal resection of pituitary macroadenomas with suprasellar extension were reviewed. In the coronal plane, tumors were classified into Type 1 (dome-shaped, no constriction at the level of diaphragma sellae) and Type 2 (dumbbell-shaped, with constriction at the level of diaphragma sellae).

View Article and Find Full Text PDF

Objective: According to the 2017 World Health Organization classification of neuro-endocrine tumors, pituitary adenomas (PAs) are classified according to immunoexpression of the pituitary-specific transcription factors (TFs). A small subset of PAs exhibit multiple TF staining on immunohistochemistry and we present a series of 27 pathologically-confirmed cases of dual TF staining PAs (dsTF-PAs), and report clinically relevant implications.

Methods: A retrospective chart review of a multi-institutional database of patients with PAs surgically resected between 2008-2021 was performed.

View Article and Find Full Text PDF

Tidal marshes store large amounts of organic carbon in their soils. Field data quantifying soil organic carbon (SOC) stocks provide an important resource for researchers, natural resource managers, and policy-makers working towards the protection, restoration, and valuation of these ecosystems. We collated a global dataset of tidal marsh soil organic carbon (MarSOC) from 99 studies that includes location, soil depth, site name, dry bulk density, SOC, and/or soil organic matter (SOM).

View Article and Find Full Text PDF

In the 2022 fifth edition of the WHO Classification of Endocrine Tumours and of Central Nervous System Tumours, pituitary adenomas are reclassified as neuroendocrine tumours (NETs). This change confers an oncology label to neoplasms that are overwhelmingly benign. A comprehensive clinical classification schema is required to guide prognosis, therapy and outcomes for all patients with pituitary adenomas.

View Article and Find Full Text PDF
Article Synopsis
  • Pituitary carcinomas are rare tumors that do not respond well to treatment and have an unpredictable disease progression.
  • A study reviewed 14 cases treated over 30 years, revealing a median progression-free survival of 1.4 years and overall survival of 8.4 years, with most patients showing invasive characteristics before metastasizing.
  • While chemotherapy and radiation improved progression-free survival, they did not significantly impact overall survival, highlighting the need for a specialized treatment approach.
View Article and Find Full Text PDF

Context: In Cushing disease, the association between the rate of serum cortisol decline and recurrent disease after corticotroph adenoma removal has not been adequately characterized.

Objective: To analyze postoperative serum cortisol and recurrence rates in Cushing disease.

Methods: Patients with Cushing disease and pathology-confirmed corticotroph adenoma were retrospectively studied.

View Article and Find Full Text PDF

Background: The estimated prevalence of pituitary lesions is 10% to 38.5% in radiologic studies. However, how frequently these incidental lesions should be monitored by serial pituitary magnetic resonance imaging (MRI) remains unclear.

View Article and Find Full Text PDF

Purpose: Endonasal resection is the first-line treatment for patients harboring growth hormone (GH)-secreting pituitary adenomas. The complexity of the parasellar neurovascular structures makes pre-operative diagnostic imaging essential to understanding the anatomy of this region. We aimed to describe vascular anomalies in acromegalic patients and emphasize their relevance for surgery and preoperative planning.

View Article and Find Full Text PDF

Objective: To evaluate the historical descriptive origins of the extracranial transnasal transsphenoidal route to the sphenoid sinus and sella turcica focusing on the works of two otolaryngologists: Markus Hajek (1861-1941) and Oskar Hirsch (1877-1965).

Data Sources: A collection of primary references of author publications, and contemporary references and textbooks.

Review Methods: Primary references were reviewed with specific focus on surgical routes to the sphenoid sinus and sella turcica.

View Article and Find Full Text PDF

Objective: Country-by-country estimates of the macroeconomic disease burden of central nervous system (CNS) cancers are important when determining the allocation of resources related to neuro-oncology. Accordingly, in this study the authors investigated macroeconomic losses related to CNS cancer in 173 countries and identified pertinent epidemiological trends.

Methods: Data for CNS cancer incidence, mortality, and disability-adjusted life years (DALYs) were collected from the Global Burden of Disease 2019 database.

View Article and Find Full Text PDF

Background: Technically and ergonomically correct positioning is essential in endoscopic transsphenoidal pituitary surgery.

Objective: To propose a safe, ergonomic approach to conduct endoscopic endonasal pituitary and skull base surgery in large patients without sacrificing important aspects of current standard practice.

Methods: The patient's right arm is outstretched and secured in a supine position, with the primary surgeon standing in the axillary area.

View Article and Find Full Text PDF

Studies of heavy metal pollution are essential for the protection of coastal environments. In this study, positive matrix factorization (PMF) and a GeoDetector model were used to evaluate the sources of heavy metal contamination and associated ecological risks along the Yancheng Coastal Wetland. The distribution of heavy metals was shown to be greatly affected by clay content, except for Cr in shoal.

View Article and Find Full Text PDF

 Rene Descartes (1596-1650), the famous philosopher and scientist, identified the pineal gland as the only cerebral structure not represented bilaterally, the "seat of the soul"; and the source of rational thought. Pineal cysts (PCs) are often incidentally identified in MRI studies, with a reported prevalence of 1 to 4.3%.

View Article and Find Full Text PDF

The marine cyanobacterium Synechococcus elongatus was grown in a continuous culture system to study the interactive effects of temperature, irradiance, nutrient limitation, and the partial pressure of CO (pCO2) on its growth and physiological characteristics. Cells were grown on a 14:10 h light:dark cycle at all combinations of low and high irradiance (50 and 300 μmol photons ⋅ m ⋅ s , respectively), low and high pCO (400 and 1000 ppmv, respectively), nutrient limitation (nitrate-limited and nutrient-replete conditions), and temperatures of 20-45°C in 5°C increments. The maximum growth rate was ~4.

View Article and Find Full Text PDF

The rise of atmospheric pCO has created a number of problems for marine ecosystem. In this study, we initially quantified the effects of elevated pCO on the group-specific mortality of phytoplankton in a natural community based on the results of mesocosm experiments. Diatoms dominated the phytoplankton community, and the concentration of chlorophyll a was significantly higher in the high-pCO treatment than the low-pCO treatment.

View Article and Find Full Text PDF

Purpose: In Cushing disease, early post-operative serum cortisol fluctuations have not been adequately characterized, and their association with initial remission and recurrence is unclear.

Methods: A retrospective cohort study of patients with Cushing disease was conducted at two institutions. A "riser" was defined a priori as a paradoxical increase in serum cortisol with an immediate incremental increase in serum cortisol over three consecutive cortisol draws separated by roughly 6-h (definition 1).

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_sessiongclggkdmkal2m2te686snaja6l32uug8): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once