Nurses' knowledge and practice in assessment and management of neonatal pain at Governmental Hospitals in Gaza Strip: A cross sectional study
Published on: 6th July, 2021
OCLC Number/Unique Identifier: 9186947792
Objective: The study aimed to investigate neonatal nurses' knowledge and practices related to pain assessment and management that may contribute to improve the quality of pain management by nurses at Neonatal Intensive Care Units (NICUs) of governmental hospitals in Gaza Strip.
Design: The study design was quantitative, descriptive cross sectional, conducted at the NICUs affiliated to the governmental hospitals "Al Shifa Hospital - Al Nasser Pediatric Hospital - European Gaza Hospital".
Materials and Methods: The sample consisted of all nurses working in NICUs. The total number of nurses was 102. The data were collected from study participants by using a self-administered questionnaire. The response rate was 100%. The data collected were analyzed by using descriptive and inferential statistical tests with level of statistical significance at p < 0.5.
Results: The results showed that nurses had very low of knowledge level with mean percentages (59.42%) and very low of practice level with mean percentages (58.33%).
Conclusion: Therefore, the study recommended to developing course or educational program related to assessment and management of neonatal pain to promote their integrated pain management care for neonates.
The blubbery protrusions: Lipoma arborescens
Published on: 15th December, 2020
OCLC Number/Unique Identifier: 8870468711
Preface
Lipoma arborescens is an exceptional condition comprised of frond-like excrescences of mature adipose tissue. The condition was originally described by Albert Hoffa in 1904 with characteristic morphology of macroscopic, villous, frond- like excrescences recapitulating a tree-like appearance, as denominated by the term “arborescens” [1]. Lipoma arborescens is additionally designated as “diffuse articular lipomatosis”, “villous lipomatous proliferation of synovial membrane” or “diffuse lipoma of joint”. The essentially benign condition appears within large joints and typically exhibits adipose tissue infiltration of sub-synovial connective tissue. Synovial sheaths of tendons are infrequently incriminated [1,2].
The coral crunch: Amyloidoma
Published on: 20th January, 2021
OCLC Number/Unique Identifier: 8895645427
Amyloidoma is an exceptional, progressive disorder demonstrating a characteristic accumulation of significant quantities of amyloid within soft tissues. Amyloidoma is additionally nomenclated as tumoural amyloidosis, nodular amyloid or localized amyloidosis. Furthermore, insulin-derived amyloidoma is referred to as insulin ball. Amyloid is a protein polymer configured of identical monomeric protein units wherein pathological variety is articulated from misfolded proteins. In excess > of twenty three subtypes of proteins can configure amyloid fibres in vivo. Extra-cellular or intra-cellular deposition of amyloid can modify normal organ function [1].
Amyloidosis is categorized into systemic and localized subtypes. Localized amyloidosis displays a localized mass effect and demonstrates a superior prognosis. Insulin-derived amyloidosis was initially documented by Storkel, et al. in 1983 who recognized accumulated insulin- amyloid fibrils in diabetic individuals subjected to continuous infusion of porcine insulin over a period of 5 weeks or more [1,2]. Amyloid nodules may be associated with systemic amyloidosis.
Hepato-Pulmonary syndrome and Porto-Pulmonary Hypertension: Rare combination cause of Hypoxemia in patient with end-stage renal failure on Hemodialysis and hepatitis C Induced Decompensated Cirrhosis
Published on: 18th December, 2017
OCLC Number/Unique Identifier: 7347072392
The case is that of 83 year-old African American man with hypertension, hepatitis C induced decompensated cirrhosis with ascites, end-stage renal disease (ESRD) on hemodialysis, fluid overload with peripheral edema and chronic hypotension. The patient was referred to the dialysis access center of Pittsburgh, PA for evaluation of his prolonged bleeding from the left upper arm brachial-basilic arterial-venous fistula (BBAVF).
Drug Eruptions at Patients in Consultation at the Dermatology Department of the Dermatology Teaching Hospital in Bamako, Mali: Epidemiological, Clinical and Etiological Study
Published on: 28th April, 2021
OCLC Number/Unique Identifier: 9028058489
The administration of a drug substance is an essential step in the management of a patient. It aims either to cure the patient, to prevent a given disease or sometimes to help with the diagnosis. Unfortunately, the action of the drug can go beyond the desired effect, and cause skin-mucous accidents. These accidents, also known as drug-induced attacks, can be isolated or associated with systemic manifestations [1]. Drug eruption is a real public health issue because of the high frequency. In Europe, drug eruption is responsible for about 20% of spontaneous reports of drug accidents. They complicate 2% to 3% of hospital treatments and motivate 1% of consultations, 5% of hospitalizations in dermatology [2]. Some African authors were interested in the subject. Reported prevalence in hospital settings ranges from 0.4% to 1.53% [3,4]. In Mali, there are no national figures. Old statistics from the Department of Dermatology show that about thirty cases occur each year, most of which are represented by severe forms. However, the risk of drug eruption is thought to be very high due to increased local use of drugs without medical advice, the illegal proliferation of drug outlets (‘Street Medicine’). And the lack of enforcement of existing regulations. In addition, some authors believe that the advent of antiretrovirals and the use of antiInfectious infections used to treat opportunistic infections have increased the risk of Drug eruption by 4 to 30 times, particularly in subjects infected with the acquired human immunodeficiency virus (HIV) [2]. This same risk can be observed in leprosy patients on combination chimotherapy. Clinically, the diagnosis of drug eruption is not as easy as one might think because of clinical polymorphism. The responsibility of a drug for the onset of a reaction is also not easy to establish, as in most cases several drugs are administered simultaneously before the onset of the rash. Because of illiteracy, patients find it difficult to make a complete list of the molecules consumed. To this must be added the high frequency of counterfeit medicines circulating both on the street and in private pharmacies. Given the scarcity of African studies and due to local specificities, it seemed interesting to us to undertake a study on Drug eruption in the dermatology department of the Dermatology teaching hospital of Bamako whose purpose is to study epidemiological aspects, clinical, etiological and to identify the molecules responsible in these patients.
Follicular psoriasis: a poorly known presentation
Published on: 12th May, 2021
OCLC Number/Unique Identifier: 9124807516
Follicular psoriasis is an uncommon diagnosis and probably the least well-known subtype of psoriasis. Hence, we report the clinical and histological findings of follicular psoriasis in one patient to raise awareness of this rare entity.
CRISPR genome editing: A general view
Published on: 23rd June, 2017
OCLC Number/Unique Identifier: 7317592004
CRISPR technology has presented a path forward for genomic engineering and gene modification. The framework for the use of CRISPR technology to manipulate the human genome is of great interest and the form of its development and application has excited the researchers and biotech communities as the number of publications citing CRISPR gene targeting system has rose predominantly as indexed in PubMed. From a technical standpoint of view, most of us think that this would be relatively straightforward process, but technical feasibility is never the only consideration in doing experiments. Much of the discussion about CRISPR engineering has revolved mostly around its ability for treating disease or editing the genes of human embryos. In the real sense, what the biologists desire about CRISPR is its specificity: the ability to target and determine particular DNA sequences in the genome circuit.
Novel Non-invasive Management of Chronic Groin Pain from Fibrosed Contracted Inguinal Ligament
Published on: 12th October, 2018
OCLC Number/Unique Identifier: 7905999287
A 34-year-old male patient presented with the complaint of chronic pain in the left groin following left side testicular vein ligation for varicocele. Ilio-inguinal neurectomy and cremaster muscle division was done in another hospital for the pain but with no relief of pain. Patient on examination showed point tenderness in the left groin at the pubic tubercle. Finger Invagination test in the left was painful with severe tenderness. Investigation showed fibrosed contracted left distal inguinal ligament. Percutaneous Ultrasonographic (USG) guided inguinal ligament release and Platelet-Rich Plasma (PRP) injection relieved the pain completely. Post-procedure patient showed significant improvement of pain.
A comparative study between ultrasound guided and landmarks guided intraarticular sacroiliac injections in spondyloarthritis patients
Published on: 17th March, 2020
OCLC Number/Unique Identifier: 8570200949
Purpose: Sacroiliac joints (SIJ) inflammation and pain is particularly common in patients with Spondyloarthritis. Intraarticular SIJs injections represent a valuable therapeutic option in this condition. In the rheumatological outpatient clinics this procedure is usually done by landmark guidance (LG) or ultrasound guidance (USG).
Thus we aimed to compare the short term efficacy of USG vs. LG SIJ injections using five outcome measures: 1. Pain; 2. SIJ status (number of positive provocation tests per symptomatic SIJ on physical examination); 3. Disability; 4. Quality of the night sleep; 5. Patients’ satisfaction.
Methods: We enrolled 44 consecutive spondyloarthritis patients with pain in the SIJs that did not respond to NSAIDS and that were otherwise on a stable medical treatment. All patients also had ≥ 3 positive pain provocation tests per SIJ on physical examination. Patients were randomly allocated to receive a single SIJ injection with 7 mg Betamethasone (1 ml) and 1% Lidocaine (1.5 ml) either under USG or with LG.
Results: Both groups showed significant improvement in all outcome parameters. However, the USG approach performed significantly better than the LG ones in all parameters. In addition, there was a significant correlation between the improvement in all patient reported outcomes (VAS, RMDQ, JSEQ) and the reduction in the number of positive SIJ pain provocation tests per symptomatic joint.
Conclusion: Both USG and LG SIJ injections proved to be an efficient treatment for SIJ pain in SpA patients. However, USG of the intervention led to statistically better results in the present study.
C3D data based on 2-dimensional images from video camera
Published on: 13th January, 2021
OCLC Number/Unique Identifier: 8899341920
The Human three-dimensional (3D) musculoskeletal model is based on motion analysis methods and can be obtained by particular motion capture systems that export 3D data with coordinate 3D (C3D) format. Unique cameras and specific software are essential for analyzing the data. This equipment is quite expensive, and using them is time-consuming. This research intends to use ordinary video cameras and open source systems to get 3D data and create a C3D format due to these problems. By capturing movements with two video cameras, marker coordination is obtainable using Skill-Spector. To create C3D data from 3D coordinates of the body points, MATLAB functions were used. The subject was captured simultaneously with both the Cortex system and two video cameras during each validation test. The mean correlation coefficient of datasets is 0.7. This method can be used as an alternative method for motion analysis due to a more detailed comparison. The C3D data collection, which we presented in this research, is more accessible and cost-efficient than other systems. In this method, only two cameras have been used.
Fecal storage condition induces variations of microbial composition and differential interpretation of metagenomic analysis
Published on: 17th March, 2021
OCLC Number/Unique Identifier: 8999916387
Advances in metagenomics have facilitated population studies of associations between microbial compositions and host properties, but strategies to minimize biases in these population analyses are needed. However, the effects of storage conditions, including freezing and preservation buffer, on microbial populations in fecal samples have not been studied sufficiently. In this study, we investigated metagenomic differences between fecal samples stored in different conditions. We collected 46 fecal samples from patients with lung cancer. DNA quality and microbial composition within different storage Methods were compared throughout 16S rRNA sequencing and post analysis. DNA quality and sequencing results for two storage conditions (freezing and preservation in buffer) did not differ significantly, whereas microbial information was better preserved in buffer than by freezing. In a metagenomic analysis, we observed that the microbial compositional distance was small within the same storage condition. Taxonomic annotation revealed that many microbes differed in abundance between frozen and buffer-preserved feces. In particular, the abundances of Firmicutes and Bacteroidetes varied depending on storage conditions. Microbes belonging to these phyla differed, resulting in biases in population metagenomic analysis. We suggest that a unified storage Methods is requisite for accurate population metagenomic studies.
European Clinical Laboratory, Molecular and Pathological (ECMP) criteria for prefibrotic JAK2V617F-Thrombocythemia and Polycythemia Vera versus MPL515- and CALR-Thrombocythemia and Myelofibrosis: From Dameshek to Michiels 1950-2018
Published on: 1st March, 2019
OCLC Number/Unique Identifier: 8056299472
The broad spectrum of heterozygous versus homozygous JAK2V617F mutated MPN consists ET, ET with early features of PV (prodromal PV), classical PV, masked PV, advanced PV and post-PV myelofibrosis. Combined use of bone marrow histology and increased erythrocyte counts above 5.8x1012/L can replace increased red cell mass at time of presentation as the pathognomonic clue for the correct diagnosis of hetero/homozygous or homozygous mutated PV. Erythrocyte counts are in the normal range below 5.8x1012/L in heterozygous JAK2V617F mutated ET and prodromal PV but above 5.8x1012/L in heterozygous-homozygous or homozygous mutated PV. The bone marrow cellularity and morphology in pre-fibrotic ET, prodromal PV and PV carrying the JAK2V617F mutation are overlapping showing clustered increase of large mature pleomorphic megakaryocytes (M) with no increase of cellularity (<60%) in ET. The bone marrow is hypercellular (60%-80%) due to increased erythropoiesis megakaryopoiesis (EM) in prodromal and classical PV and trilinear hypercellular (80%-100% due increased megakaryopoiesis, erythropoiesis and granulopoiesis (EMG) in advanced PV and masked PV. Bone marrow cellularity ranging from normal (<60%) in ET to increased erythropoiesis (EM) in prodromal PV to hypercellular (80-100%) in advanced PV and masked PV largely depends on increasing JAK2V617F mutation load from low to high on top of other biological MPN variables like constitutional symptoms during long-term follow-up. MPL515 mutated ET is featured by an increase of clustered small and giant megakaryocytes with hyper-lobulated staghorn-like nuclei in a normal cellular bone marrow. The third entity of pronounced JAK2/MPL wild type ET associated with primary megakaryocytic granulocytic myeloproliferation (PMGM) without PV features proved to be caused by calreticulin (CALR) mutation. CALR mutated thrombocythemia is characterized by dual proliferation of megakaryocytic and granulocytic bone marrow proliferation of dense clustered large to giant immature dysmorphic megakaryocytes with bulky (bulbous) hyperchromatic nuclei, which are not seen in MPL515-mutated Thrombocythemia and JAK2V617F-Thrombocythemia, prodromal PV and classical PV.
Primary myelofibrosis is not primary anymore since the discovery of MPL515 and CALR mutations as driver causes of mono-linear megakaryocytic and dual megakaryocytic granulocytic myeloproliferation and secondary myelofibrosis
Published on: 15th April, 2019
OCLC Number/Unique Identifier: 8164054496
Primary myelofibrosis (PMF) is a distinct clinicopathological myeloproliferatve disease (MPD) not preceded by any other MPD ET, PV, CML,... Combined use of bone marrow histology and increased erythrocyte counts above 5.8x1012/L can replace increased red cell mass at time of presentation as the pathognomonic clue for the correct diagnosis of hetero/homozygous or homozygous mutated PV. Erythrocyte counts are in the normal range below 5.8x1012/L in heterozygous JAK2V617F mutated ET and prodromal PV but above 5.8x1012/L in heterozygous-homozygous or homozygous mutated PV. The bone marrow cellularity and morphology in pre-fibrotic ET, prodromal PV and PV carrying the JAK2V617F mutation are overlapping showing clustered increase of large mature pleomorphic megakaryocytes (M) with no increase of cellularity (<60%) in ET. The bone marrow is hypercellular (60%-80%) due to increased erythropoiesis megakaryopoiesis (EM) in prodromal and classical PV and trilinear hypercellular (80%-100% due increased megakaryopoiesis, erythropoiesis and granulopoiesis (EMG) in advanced PV and masked PV. Bone marrow cellularity ranging from normal (<60%) in ET to increased erythropoiesis (EM) in prodromal PV to hypercellular (80-100%) in advanced PV and masked PV largely depends on increasing JAK2V617F mutation load from low to high on top of other biological MPN variables like constitutional symptoms during long-term follow-up. MPL515 mutated ET is featured by an increase of clustered small and giant megakaryocytes with hyper-lobulated staghorn-like nuclei in a normal cellular bone marrow. The third entity of pronounced JAK2/MPL wild type ET associated with primary megakaryocytic granulocytic myeloproliferation (PMGM) without PV features proved to be caused by calreticulin (CALR) mutation. CALR mutated thrombocythemia is characterized by dual proliferation of megakaryocytic and granulocytic bone marrow proliferation of dense clustered large to giant immature dysmorphic megakaryocytes with bulky (bulbous) hyperchromatic nuclei, which are not seen in MPL515-mutated Thrombocythemia and JAK2V617F-Thrombocythemia, prodromal PV and classical PV.
The forgotten player in the surgical history
Published on: 13th May, 2019
OCLC Number/Unique Identifier: 8164026356
The research concerning a preventive treatment of an osteoporitic femoral neck fracture started in 1990 because the surgical procedure of unstable femoral neck fractures is difficult. After effects are frequent and their number will increase in the next decade. The goal is to reinforce the femur with a biomaterial acting as a bone graft.
Natural coral is bioresorbable and biocompatible. It acts as an autofocus bone graft for reconstruction of either cortex or cancellous bone and increases their mechanical resistance.
This work shows evidence of new bone formation in an osteoporotic unbroken femoral neck femur. Consequently, the preventive surgical treatment of osteoporosis should be taken in consideration [1]. The purpose of this work is to show the results on the mineralization of the cancellous bone of an upper femoral metaphyses when a natural biomaterial is set in an unbroken osteoporotic femoral neck.
Summary: Mrs. L is an 84 years old lady. Her osteoporotic unbroken right hip was grafted preventively with a biomaterial in order to prevent the high risk of break in case of fall. The biomaterial used is beads of natural coral. The reasons of this preventive treatment is discussed, as well as the choice of the biomaterial. The results are shown including a two years follow up.
Brief History: Before going further, few words of history. Three centuries BC, an Aristote’s follower, Théophraste thinks that Natural coral is a petrified plant.
For Ovide natural coral is a soft alga air-hardening.
Al Biruni classes it among animals, because that respond to touch.
At the beginning of the XVIIth century, Marsigli thinks that they are flowers which open out there in aquarium.
The French Jean-André Peyssonnel, a young naturalist, says as Biruni, that in fact, corals are animals.
At last, Buffon claims: These marine plants, were classified first in the rank of minerals, then in those of plants, and finally in that of animals.
Natural coral is obviously an animal.
After the Second World War, coral samples were analyzed by American scientists. Among 800 corail species, 3 where specially analyzed: Acropora, Porites and Libophylia.
Mrs Nane Guillemin did in France her PHD on natural coral and with her team made a complete fundamental analysis (physical, chemical and biological properties) of the material, while the American scientists worked on the chemical bone’s properties.
In France, Pr Ohayoun and his team worked on the surgical application in the dental field, Dr. Yves Cirotteau in the orthopedic surgery, specifically for osteoporotic disease and for the traumatologic field
Bone marrow histology in CALR mutated thrombocythemia and myelofibrosis: Results from two cross sectional studies in 70 newly diagnosed JAK2/MPL wild type thrombocythemia patients
Published on: 21st June, 2019
OCLC Number/Unique Identifier: 8180078896
The clinical phenotypes in 268 JAK2V617F mutated MPN patients in the Seoul study were PV in 101, ET in 95 and MF in 78 and 56 CALR mutated MPN consisted of PV in none, ET in 40 and MF in 16 cases. CALR mutated MPN patients were younger than JAK2V617F mutated MPN patients (mean ages 57.5 and 66 years), had lower values for values for leukocytes (8.6 vs 11.9x109/L) and higher values for platelets (898 vs 643x109/L respectively). Bone marrow histopathology in 268 JAK2V617F mutated MPN patients in the Seoul study was featured by an increased erythropoiesis and megakaryopoiesis (EM) in 13.5%, an increased erythropoiesis, megakaryopoiesis and granulopoiesis (EMG) in 31.3%, a normocellular megakaryocytic (M) proliferation in 29,1%, a megakaryocytic and granulocytic (MG) proliferation with a relative reduction of erythropoiesis in post-ET and Post-PV myelofibrosis in 26.2%. The bone marrow histology in 56 cases of CALR mutated MPN show a predominantly increased megakaryopoiesis (M) in two thirds and an increased megakaryopoiesis and granulopoiesis (MG) with a decreased erythropoiesis in one third.
Thirteen consecutive CALR MPN patients in the Belgian & Dutch cross sectional study presented with thrombocythemia associated with a typical PMGM bone marrow histology in 11 and myelofibrosis in 2 cases. All 11 thrombocythemia and 2 myelofibrosis CALR mutated MPN patients did not have constitutional symptoms and did not suffer from microvascular erythromelalgic disturbances, major thrombosis at platelet counts between 400 and 1000x109/L. There was an occurrence of hemorrhages at platelet counts above 1000x109/L in two CALR thrombocythemia cases.
Bone marrow histology of CALR mutated thrombocythemia in the Seoul and Belgian/Dutch study showed loose clusters of large megakaryocytes (M) with bulky, cloud-like nuclei with a normal or a minor reduction of erythropoiesis and no increase in reticulin fibers grade 0 or 1 (RF 0 or 1). CALR thrombocythemia patients show various degrees of increased bone marrow cellularity due to dual megakaryocytic and granulocytic (MG) proliferation featured by large megakaryocytes with roundish bulky nuclear forms and cloud-like clumsy nuclei, which are almost never seen in JAK2V617F ET and PV. Assessment of allele burden is an independent and most important factor for all molecular variants MPN disease burden. Overt myelofibrosis with advanced post PV and or ET myelofibrosis at the bone marrow level occurred in one third (30%) of 208 evaluable JAK2 MPN patients and in 8 (14%) of 56 CALR MPN patients in the Seoul study.
Drug abuse and its ramifications on skeletal system
Published on: 5th November, 2019
OCLC Number/Unique Identifier: 8330461480
The purpose of this study is to highlight the drug abuse hazards and preventive aspects. From a public health perspective, substance abuse has long been a source of major concern, both for the individual’s health and for wider society as a whole. The UK has the highest rates of recorded illegal drug misuse in the western world. In particular, it has comparatively high rates of heroin and crack cocaine use. Substances that are considered harmful are strictly regulated according to a classification system that takes into account the harms and risks of taking each drug. The adverse effects of drug abuse can be thought of in three parts that together determine the overall harm in taking it. Some addictive substances are more damaging to the skeletal system along with the others. In this review article, an effort has been taken to elaborate the effects of addictive drugs on human highlighting these most problematic substances for bones and also the promising potential prevention aspects of drug abuse.
Novel European Asiatic Clinical, Laboratory, Molecular and Pathobiological (2015-2020 CLMP) criteria for JAK2V617F trilinear polycythemia vera (PV), JAK2exon12 PV and JAK2V617F, CALR and MPL515 thrombocythemias: From Dameshek to Constantinescu-Vainchenker, Kralovics and Michiels
Published on: 3rd April, 2020
OCLC Number/Unique Identifier: 8576367174
The Myeloproliferative Neoplasms (MPN) of trilinear polycythemia vera (PV) and megakaryocytic leukemia (ML = primary megakaryocytic granulocytic myeloproliferation: PMGM) and Essential Thrombocythemia (ET) in the studies of Dameshek and Michiels are caused by the MPN driver mutations JAK2V617F, JAK2exon12, CALR and MPL515 discovered by Constantinescu-Vainchenker, Green and Kralovics. The JAK2V617F mutated trilinear myeloproliferative neoplasms (MPN) include a broad spectrum of clinical laboratory and bone marrow features in essential thrombocythemia (ET), prodromal PV and erythrocythemic PV, classical PV and advanced stages of masked PV and PV complicated by splenomegaly and secondary myelofibrosis (MF). Heterozygous JAK2V617F mutated ET is associated with low JAK2 allele and MPN disease burden and normal life expectance. In combined heterozygous and homozygous or homozygous JAK2V617F mutated trilinear PV, the JAK2 mutation load increases from less than 50% in prodromal PV and classical PV to above 50% up to 100% in hypercellular PV, advanced PV and PV with MF. Bone marrow histology show diagnostic features of eryhrocytic, megakaryocytic and granulocytic (EMG) myeloproliferation in JAK2V617F mutated trilinear MPN, which clearly differs from monolinear megakaryocytic (M) myelproliferation in MPL and CALR thrombocythemia and dual megakaryocytic granulocytic (MG) myeloproliferation in CALR mutated thrombocythemia. The morphology of clustered large pleomorphic megakaryocytes with hyperlobulated nuclei are similar in JAK2V617F thrombocythemia, prodromal PV and classical PV patients. Monolinear megakaryocytic (M) myeloproliferation of large to giant megakaryocytes with hyperlobulated staghorn-like nuclei is the hallmark of MPL515 mutated normocellular thrombocythemia. CALR mutated thrombocythemia usually presents with high platelet count around 1000x109/l and normocellular megakaryocytic (M) proliferation of immature megakaryocytes with cloud-like hyperchromatic nuclei followed by dual megakaryocytic granulocytic (MG) myeloproliferation followed by various degrees of bone marrow fibrosis. Natural history and life expectancy of MPN patients are related to the response to treatment and the degree of anemia, splenomegaly, myelofibrosis and constitutional symptoms. The acquisition of epigenetic mutations at increasing age on top of MPN disease burden independently predict unfavorable outcome in JAK2V617F, MPL515 and CALR mutated myeloproliferative neoplasms (MPNs, which mutually exclude each other).
Mimicking multiple sclerosis - Ghost tumor that comes and goes in different parts of the brain without any treatment
Published on: 9th July, 2019
Lesions that spontaneously come and go in central nervous system without any treatment at different time points and at different locations (CNS) usually lead ones to think of the possibilities of multiple sclerosis. However, sometimes there are exceptions. Surgical biopsy remains an important tool for definitive diagnosis in difficult cases. We report a case of intracranial diffuse large B cell lymphoma that spontaneously disappeared without any treatment and then reappeared at different time points and different locations.
Gastrointestinal stromal tumor resulting in recurrent colic in a arabian horse gelding a report of case
Published on: 2nd November, 2020
OCLC Number/Unique Identifier: 8697203989
Background: A Grey 12-year-old Arabian endurance horse gelding was referred to the SHS Veterinary Center for anorexia, mild colic of 5 days duration, and melena of 1 day duration. The owner reported recurring colic, 12 episodes of mild colic in the previous year.
Methods: On admission, vital signs were within normal limits and body condition score was estimated to be 3/9.
Results: Packed cell volume (PCV) was 28% [reference range (RR): 31% to 47%] and plasma total protein was 58 g/L (RR: 60 to 80 g/L). Hematochezia was observed. Abdominal ultrasound examination detected no abnormalities. Over the next 12 h, the horse experienced hematochezia and several mild episodes of colic and death. A necropsy was performed. A mass arising from the right dorsal ascending colon near the base of the cecum and extending transmurally from the colonic mucosa into the mesocolon was a 8 cm × 5 cm × 8 cm firm, homogenous, tan mass. The portion of the mass that extended into the colonic lumen was pedunculated, with an ulcerated surface. The adjacent segments of colon were markedly reddened and edematous. Histologically, the mass was comprised of large interweaving sheets of small, spindle cells with ill-defined cell borders embedded in abundant myxomatous matrix. Tumor cells contained scant eosinophilic cytoplasm and oval to elongate nuclei with finely stippled chromatin and inconspicuous nucleoli. Mitotic figures were rare (1/10) high power fields. Tumor infiltrated between the muscularis interna and the muscularis externa at the myenteric plexi.
Conclusion: Gross and histologic appearance, were consistent with a diagnosis of gastrointestinal stromal tumor.
Carbonic Anhydrase I modifies SOD1-induced motor neuron toxicity in Drosophila via ER stress pathway
Published on: 1st August, 2019
OCLC Number/Unique Identifier: 8195612915
Background: Drosophila models of amyotrophic lateral sclerosis (ALS) have been widely used in understanding molecular mechanisms of ALS pathogenesis as well as discovering potential targets for therapeutic drugs. Mutations in the copper/zinc superoxide dismutase (SOD1) cause ALS by gain of toxic functions and induce toxicity in fly motor neurons.
Results: In this study, we have determined that human carbonic anhydrase I (CA1) can alleviate mutant SOD1-induced motor neuron toxicity in the transgenic fly model of ALS. Interestingly, we found that motor neuron expression of CA1 could independently induce locomotion defect as well as decreasing the survival rate. In addition, CA1-induced toxicity in motor neurons is anhydrase activity-dependent. Mechanistically, we identified that both SOD1- and CA1-induced toxicity involve the activation of eIF2α in the ER stress response pathway. Downstream activation of the JNK pathway has also been implicated in the induced toxicity.
Conclusion: Our results have confirmed that SOD1-induced toxicity in fly motor neuron also involves endoplasmic reticulum (ER) stress pathway. More importantly, we have discovered a new cellular role that CA1 plays by antagonizing mutant SOD1-induced toxicity in motor neurons involving the ER stress pathway. Such information can be potentially useful for further understanding disease mechanisms and developing therapeutic targets for ALS.
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