scholarly journals Growth hormone-secreting adenomas: pathology and cell biology

2010 ◽  
Vol 29 (4) ◽  
pp. E2 ◽  
Author(s):  
M. Beatriz S. Lopes

The majority of patients with acromegaly harbor a functioning growth hormone (GH) pituitary adenoma. Growth hormone–secreting adenomas correspond to about 20% of all pituitary adenomas. From the histopathological point of view, a variety of adenomas may present with clinical signs and symptoms of GH hypersecretion including pure GH cell adenomas (densely and sparsely granulated GH adenomas), mixed GH and prolactin cell adenomas, and monomorphous adenomas with primitive cells able to secrete GH and prolactin including the acidophilic stem cell adenoma and the mammosomatotroph cell adenoma. In this article, the author reviews the main pathological features of the GH-secreting adenomas and some of the molecular genetics mechanisms involved in their pathogenesis.

Author(s):  
K. Kovacs ◽  
E. Horvath ◽  
S.L. Asa ◽  
D. Lietz ◽  
S.R. George ◽  
...  

Treatment of acromegalic patients with somatostatin is a logical approach, since growth hormone (GH) cell adenomas possess somatostatin receptors and somatostatin is known to inhibit GH release. Because of short duration of its action, therapy with natural somatostatin is ineffective in patients with acromegaly. I has been shown recently that SMS 201-995, a long-acting somatostatin analog, reduces blood GH levels and ameliorates clinical signs and symptoms in GH excess. We report here morphologic findings in a pituitary GH cell adenoma removed by surgery from a 36-year-old acromegalic woman after 10 days of SMS 201-995 therapy. Treatment resulted in reduction of blood GH levels.


2021 ◽  
Vol 6 (3) ◽  

From medical point of view, “Diarrhea” is an alteration in a normal bowel movement characterized by an increase in the water content, volume, or frequency of stools. Acute diarrhea of infec¬tious etiology, often referred to as gastroenteri¬tis and is typically associated with clinical signs and symptoms including: nausea, vomiting, abdomi¬nal pain and cramps, bloating, flatulence, fever, passage of bloody stools, tenesmus, and fecal ur¬gency. Infectious diarrheal diseases are the second leading cause of morbidity and mortality worldwide. It is the diarrhea we have also found out, during a large 3 yeas study 2017-2020 in Transylvania – Romania. 3577 number of cases were transmitted during this time, to our Public Health Center, by 12 district Sanitary Polices. These were mostly diagnosed by the territorial family doctors and more then 50%, have need hospitalization, for several days because of the mentioned disease disorders. The detected infectious etiology, were determined in authorized laboratories in which it was identified: Shigella, Salmonella, Campylobacter, and Yersinia, Rotavirus, Giardia. Most number of cases appeared in children, followed by elderly or adult people, as quantified number of determination. In light of these data, acute diarrheal illness had to be considered a major public health issue against which control efforts are needed. Public health surveillance and response in the field of infectious acute diarrhea include obligatory strategies of infection control.


2021 ◽  
Vol 3 (3) ◽  
pp. 01-04
Author(s):  
Liana Deac

From medical point of view, “Diarrhea” is an alteration in a normal bowel movement characterized by an increase in the water content, volume, or frequency of stools. Acute diarrhea of infec­tious etiology, often referred to as gastroenteri­tis and is typically associated with clinical signs and symptoms including: nausea, vomiting, abdomi­nal pain and cramps, bloating, flatulence, fever, passage of bloody stools, tenesmus, and fecal ur­gency. Infectious diarrheal diseases are the second leading cause of morbidity and mortality worldwide. It is the diarrhea we have also found out, during a large 3 yeas study 2017-2020 in Transylvania – Romania. 3577 number of cases were transmitted during this time, to our Public Health Center, by 12 district Sanitary Polices. These were mostly diagnosed by the territorial family doctors and more than 50%, have need hospitalization, for several days because of the mentioned disease disorders. The detected infectious etiology, were determined in authorized laboratories in which it was identified: Shigella, Salmonella, Campylobacter, and Yersinia, Rotavirus, Giardia. Most number of cases appeared in children, followed by elderly or adult people, as quantified number of determination. In light of these data, acute diarrheal illness had to be considered a major public health issue against which control efforts are needed. Public health surveillance and response in the field of infectious acute diarrhea include obligatory strategies of infection control.


Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 5531-5531
Author(s):  
Emily R. Stuntebeck ◽  
Daryl D. DePestel ◽  
Curtis D. Collins ◽  
Brian Donovan ◽  
Kenneth C. Lamp

Abstract Background: Daptomycin is a lipopeptide antibiotic with potent activity against many Gram-positive organisms. Efficacy in immunocompromised patients is unknown because these patients have been excluded from daptomycin premarketing studies. Methods: Patients with documented infections treated at the University of Michigan Health System in either the bone marrow transplant or hematology/oncology service were identified in the Cubicin® Outcomes Registry and Experience (COREsm 2004 and 2005). Demographic, disease state, clinical, and microbiologic data were collected. Clinical outcomes were assessed using the following definitions: Cure - clinical signs and symptoms are resolved and/or no additional antibiotic therapy is necessary or infection cleared with a negative culture reported at the end of daptomycin therapy; Improved - partial resolution of clinical signs and symptoms and/or additional antibiotic therapy is necessary at the end of daptomycin therapy; Failure - inadequate response to therapy or resistant, worsening or new/recurrent signs and symptoms, or the need for a change in antibiotic therapy or a positive culture reported at the end of daptomycin therapy; Nonevaluable - unable to determine response at the end of daptomycin therapy. Success was defined as cure or improved. Results: Fourteen patients are included in this analysis. Nine (64%) patients were female; 6 (43%) were ≥ 51 years of age. Two patients had an initial CrCl <30 mL/min, 1 was on hemodialysis. Eight (57%) patients had undergone allogeneic peripheral blood stem cell transplantation primarily for acute myeloid leukemia. The remaining 6 patients had papillary adenocarcinoma, endometrial carcinoma, dermatofibrosarcoma protuberans, acute lymphoblastic lymphoma, non-Hodgkin lymphoma, and Hodgkin lymphoma. The most common infection (n=11, 79%) was bacteremia; 7 (50%) patients had catheter-related bacteremia; 1 each (7%) had discitis, necrotizing fasciitis and urinary tract infection. Nine (64%) patients had vancomycin-resistant Enterococcus faecium (VRE) as a pathogen; 8 were bacteremic (3 with concurrent coagulase-negative staphylococci; CoNS). Methicillin-resistant Staphylococcus aureus (MRSA) was isolated in 3 (21%) patients; 2 were bacteremic (1 with concurrent CoNS). One additional patient had CoNS bacteremia. The patient with necrotizing fasciitis was culture negative. The initial daptomycin dose was 4 mg/kg in 8 (57%) patients and 6 mg/kg in 6 (43%) patients. All patients receiving 6 mg/kg were bacteremic. The dosing frequency was adjusted for renal function in all patients. The median duration of therapy was 14.5 days (range, 2 – 62). Nine (64%) patients received an antibiotic prior to daptomycin and 43% of patients received an antibiotic concomitantly. Seven catheters were removed; 5 from patients with catheter-related bacteremia. The median time to clinical response was 2 days (n=10, range 1 – 13). All patients with an outcome reported (n=11) were successfully treated, 3 (21%) patients were nonevaluable. Of the 11 bacteremic patients, 5 received 4 mg/kg and 6 received 6 mg/kg; 2 were nonevaluable (both 6 mg/kg) and 9 of 11 (82%) were successes. Conclusion: These data demonstrate that daptomycin therapy is associated with clinical success in hem/onc patients including those who have undergone allogeneic peripheral blood stem cell transplantation where bacteremia and VRE are prevalent.


Geriatrics ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 5
Author(s):  
Donatella Rita Petretto ◽  
Gian Pietro Carrogu ◽  
Luca Gaviano ◽  
Lorenzo Pili ◽  
Roberto Pili

Over 100 years ago, Alois Alzheimer presented the clinical signs and symptoms of what has been later called “Alzheimer Dementia” in a young woman whose name was Augustine Deter [...]


Pituitary ◽  
2020 ◽  
Author(s):  
Eliza B. Geer ◽  
Roberto Salvatori ◽  
Atanaska Elenkova ◽  
Maria Fleseriu ◽  
Rosario Pivonello ◽  
...  

The original version of the article unfortunately contained an error in the first name and the surname of one of the authors in the author group. The last author name was incorrectly published as ‘F. Pecori Giraldi’ and the corrected name is ‘Francesca Pecori Giraldi’ (First name: Francesca; Surname: Pecori Giraldi).


2016 ◽  
Vol 15 (2) ◽  
pp. 220-223 ◽  
Author(s):  
Shadi Saghafi ◽  
Reza Zare-Mahmoodabadi ◽  
Narges Ghazi ◽  
Mohammad Zargari

Objective: The purpose of this study was to retrospectively analyze the demographic characteristics of patients with central giant cell granulomas (CGCGs) and peripheral giant cell granulomas (PGCGs) in Iranian population.Methods: The data were obtained from records of 1019 patients with CGCG and PGCG of the jaws referred to our department between 1972 and 2010. This 38-year retrospective study was based on existing data. Information regarding age distribution, gender, location of the lesion and clinical signs and symptoms was documented. Results: A total of 1019 patients were affected GCGLs including 435 CGCGs and 584 PGCGs during the study. The mean age was 28.91 ± 18.16. PGCGs and CGCGs had a peak of occurrence in the first and second decade of life respectively. A female predominance was shown in CGCG cases (57.70%), whereas PGCGs were more frequent in males (50.85%). Five hundred and ninety-eight cases of all giant cell lesions (58.7 %) occurred in the mandible. Posterior mandible was the most frequent site for both CGCG and PGCG cases. The second most common site for PGCG was posterior maxilla (21%), whereas anterior mandible was involved in CGCG (19.45%). The majority of patients were asymptomatic. Conclusions: In contrast to most of previous studies PGCGs occur more common in the first decade and also more frequently in male patients. Although the CGCGs share some histopathologic similarities with PGCGs, differences in demographic features may be observed in different populations which may help in the diagnosis and management of these lesions.Bangladesh Journal of Medical Science Vol.15(2) 2016 p.220-223


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