53 research outputs found
Ovarian function during hormonal contraception assessed by endocrine and sonographic markers: a systematic review
This systematic review focuses on the literature evidence for residual ovarian function during treatment with hormonal contraceptives. We reviewed all papers which assessed residual ovarian activity during hormonal contraceptive use, using endocrine markers such as serum anti-MĂĽllerian hormone (AMH) concentrations, FSH, LH, oestradiol, progesterone and sonographic markers such as antral follicle count (AFC), ovarian volume and vascular indices. We considered every type (oestroprogestin or only progestin) and dosage of hormonal contraceptive and every mode of administration (oral, vaginal ring, implant, transdermal patch). We performed an electronic database search for papers published from 1 January 1990 until 30 November 2015 using PubMed and MEDLINE. We pre-selected 113 studies and judged 48 studies suitable for the review. Most studies showed that follicular development continues during treatment with hormonal contraceptives, and that during treatment there is a reduction in serum concentrations of FSH, LH and oestradiol, and also a reduction in endometrial thickness, ovarian volume and the number and size of antral follicles. The ovarian reserve parameters, namely AFC and ovarian volume, are lower among users than among non-users of hormonal contraception; regarding the effect of hormonal contraception on AMH, there are still controversies in the literature
GEN-O-MA project: an Italian network studying clinical course and pathogenic pathways of moyamoya disease—study protocol and preliminary results
Background: GENetics of mOyaMoyA (GEN-O-MA) project is a multicenter observational study implemented in Italy aimed at creating a network of centers involved in moyamoya angiopathy (MA) care and research and at collecting a large series and bio-repository of MA patients, finally aimed at describing the disease phenotype and clinical course as well as at identifying biological or cellular markers for disease progression. The present paper resumes the most important study methodological issues and preliminary results. Methods: Nineteen centers are participating to the study. Patients with both bilateral and unilateral radiologically defined MA are included in the study. For each patient, detailed demographic and clinical as well as neuroimaging data are being collected. When available, biological samples (blood, DNA, CSF, middle cerebral artery samples) are being also collected for biological and cellular studies. Results: Ninety-eight patients (age of onset mean ± SD 35.5 ± 19.6 years; 68.4% females) have been collected so far. 65.3% of patients presented ischemic (50%) and haemorrhagic (15.3%) stroke. A higher female predominance concomitantly with a similar age of onset and clinical features to what was reported in previous studies on Western patients has been confirmed. Conclusion: An accurate and detailed clinical and neuroimaging classification represents the best strategy to provide the characterization of the disease phenotype and clinical course. The collection of a large number of biological samples will permit the identification of biological markers and genetic factors associated with the disease susceptibility in Italy
Clinical and molecular characterization of diffuse large B-cell lymphomas with 13q14.3 deletion.
Background: Deletions at 13q14.3 are common in chronic lymphocytic leukemia and are also present in diffuse
large B-cell lymphomas (DLBCL) but never in immunodeficiency-related DLBCL. To characterize DLBCL with 13q14.3
deletions, we combined genome-wide DNA profiling, gene expression and clinical data in a large DLBCL series treated
with rituximab, cyclophosphamide, doxorubicine, vincristine and prednisone repeated every 21 days (R-CHOP21).
Patients and methods: Affymetrix GeneChip Human Mapping 250K NspI and U133 plus 2.0 gene were used.
MicroRNA (miRNA) expression was studied were by real-time PCR. Median follow-up of patients was 4.9 years.
Results: Deletions at 13q14.3, comprising DLEU2/MIR15A/MIR16, occurred in 22/166 (13%) cases. The deletion
was wider, including also RB1, in 19/22 cases. Samples with del(13q14.3) had concomitant specific aberrations. No
reduced MIR15A/MIR16 expression was observed, but 172 transcripts were significantly differential expressed.
Among the deregulated genes, there were RB1 and FAS, both commonly deleted at genomic level. No differences in
outcome were observed in patients treated with R-CHOP21.
Conclusions: Cases with 13q14.3 deletions appear as group of DLBCL characterized by common genetic and
biologic features. Deletions at 13q14.3 might contribute to DLBCL pathogenesis by two mechanisms: deregulating the
cell cycle control mainly due RB1 loss and contributing to immune escape, due to FAS down-regulation
Histologic transformation in marginal zone lymphoma
Information concerning histologic transformation (HT) of marginal zone lymphomas
(MZL) into aggressive entities is scant. We retrospectively analyzed the clinical variables at
diagnosis and outcome, with special reference to HT, in a population of consecutive patients
(pts) with confirmed diagnosis of MZL, including extranodal MZL (MALT lymphoma), splenic
MZL (SMZL) and nodal MZL (NMZL).
The database of the Hematology Division of the Amedeo Avogadro University of Eastern
Piedmont (Novara) and of the Oncology Institute of Southern Switzerland (IOSI, Bellinzona)
includes 373 cases of MZL diagnosed and treated since 1979 to 2012: 185 MALT lymphomas
(50%), 88 SMZL (23%), 36 NMZL (10%). Sixty-four patients (17%) could not be properly
classified (uMZL): they presented with bone marrow infiltration with or without detectable
involvement of peripheral blood but without splenomegaly and with apparently no other
extranodal or nodal involved site.
Incidence was not significantly different according to sex (male: 47; female: 53%),
median age at diagnosis was 68 years (20-94 years); 244 pts (65%) had stage III-IV disease.
LDH was elevated in 55/311 (18%) tested pts, beta2-microglobulin in 108/205 (53%) tested pts.
B symptoms were reported in 27/368 pts (7%). Five percent of pts had an ECOG performance
status > 1. Serologic evidence of hepatitis C virus (HCV) infection was reported in 45/243 (19%)
pts for whom the data was available. Among the 186 MALT lymphomas, 91 pts (49%) had a
gastric localization, and 54 (29%) had multiple extranodal sites of disease involvement. Median
overall survival and progression-free survival of the whole population were 15 years and 8 years,
respectively. After a median follow-up of 64 months, HT was observed in 14 cases (4%,
4
95%CI:2%-6%). A diagnosis of diffuse large B cell lymphoma was documented in 12 pts (85.7%
of patients undergoing HT), while in two cases the diagnosis was of classical Hodgkin
lymphoma and mantle cell lymphoma, respectively. HT occurred after a median interval of 3
years (range: 1-12 years) after diagnosis. With respect to MZL type, HT occurred in 6% SMZL,
3% MALT lymphomas, 3% NMZL, and 3% uMZL (P=0.767). Risk of HT was 5% (95%CI, 3-
8%) at 5 years, 5% (95%CI:3%-8%) at 10 years and 8% (95%CI, 4-15%) at 15 years; the rate of
transformation tended to plateau from that point onward. At the time of HT, most pts had high
LDH serum levels (8/11, 73%) and presence of B symptoms (6/10, 60%). After transformation,
ten pts received anthracycline-containing regimens, and three pts were treated with high dose
cytarabine regimens; in a single patient only supportive measures were adopted. In four pts,
autologous stem cell transplantation was performed after induction. At a median follow-up of 12
months after HT, five of 14 patients died, all for lymphoma-related causes, with a 2-year posttransformation
survival rate of 52% (95%CI:13%-81%). The only clinical variable significantly
associated with the risk of HT was elevated serum LDH level at diagnosis. No specific
therapeutical approach, including watchful waiting, predicted the risk of HT.
This large retrospective series documents that the risk of HT is low across all MZL types.
The incidence of HT in MZL is apparently lower than that of other indolent B cell malignancies,
namely follicular lymphoma (FL) and chronic lymphocytic leukemia (CLL). As also observed in
FL and CLL, HT in MZL occurs relatively early during the clinical course, pointing to putative
biological differences at diagnosis in MZL patients destined to transform
Le sfide per i manager sanitari tra soft skills, ICT e carriere frammentate
Institutional reforms and legislative interventions, having affected the healthcare system for years, seem to confer to the middle management an important role in managing organisational change. From the stories collected through research carried out among learners and ex-learners of the Master in Management and Innovation at Sapienza University of Rome, it has emerged the need for them to develop transversal skills indispensable for performing their role as medi-ators of top-down organisational innovations. Concerning digitalisation processes, we have collected both stories of resistance to the use of ICT and also the request for a participatory and integrated design of technological innovations. Uncertainties and cultural resistances caused by these changes fragment careers of professional women and men who narrate how they put in play different practices and skills in building their own paths and, for women only, in reconciling them with their care activity
Protein kinase C isoforms changes induced by chemical ischemia-reperfusion in rat cerebral cortex slices
none5The aim of the present report was to study the role played by PKCs in during brain ischemia, comparing the effects of oxygen-glucose deprivation (1) to the changes induced by chemical ischemia in vitro. Superfused rat cerebral cortex slices were submitted to continuous electrical (5 Hz) stimulation and treated for 5min with NaN3, in the presence of 2 mM 2-deoxyglucose (“chemical ischemia”). The study was carried out in control as well as in treated slices, both immediately, and one hour after chemical ischemia (reperfusion); subcellular (cytosol and membrane) distribution of PKC isoforms was determined by Western blot analysis using specific antibodies against PKC isoforms α, β1, β2, γ, δ and ε. In control samples all the isoforms were detected; immediately after chemical ischemia, PKC β1, δ and ε isoforms total levels (cytosol + membrane) were increased to 291+21%, 277+23% and 994+33%, respectively, while γ isoform was no more detectable. After reperfusion the changes displayed by β1, γ, δ and ε were maintained; moreover, a reduction in PKC α (39.5+10%) and an increase in β2 (141+12%) total levels became significant. The activation of PKC isoforms was evaluated by the “translocation index” (membrane to total ratio). Chemical ischemia induced a significant activation in PKC α isoform, which was completely lost during reperfusion. PKC β1 and δ isoforms were significantly activated both in ischemic and in reperfused samples, in comparison to the controls; the NMDA antagonist, MK801, 1μM, was not able to antagonize these effects. During reperfusion, the increase in PKC 2 and isoforms total levels was not accompanied by an increase in translocation index and even a reduction was displayed. Since MK801 antagonized the latter effect, the changes observed during reperfusion, indicative of neuronal damage, suggest glutamate involvement. In agreement with our previous data with oxygen-glucose deprivation (1), PKC isoforms appear to differently participate in the events triggered by in vitro ischemia and a peculiar role for 2 and isoforms in neurotoxicity/neuroprotection may be inferred. However, the activation of β1 and δ isoforms suggest different mechanisms underlying chemical ischemia. (1) Selvatici R., Marino S., Piubello C., Rodi D., Beani L., Gandini E. and Siniscalchi A. (2003) J Neurosci Res 71, 64-71.openSINISCALCHI A.; FALZARANO S.; FRANCESCHETTI L.; MARINO S.; SELVATICI R.Siniscalchi, Anna; Falzarano, Maria Sofia; Franceschetti, Lara; Marino, Silvia; Selvatici, Rit
An unusual case of a triple suicide pact at the time of the COVID-19 pandemic
In December 2020, the World Health Organization (WHO) declared SARS-CoV2 a global pandemic. Home confinement, low social contacts, and fear of virus transmission played a major role as risk factors for suicides during the following period. Suicide pacts, in particular, showed a different pattern. A rare case of a triple suicide pact among members of the same family nucleus is presented. The victims were an elderly, severely ill woman and her adult children (a son and daughter), linked by a morbid relationship. The last time the family was seen alive was 40 days before the discovery. All corpses presented decompositional changes. After a full autopsy, the cause of death was determined to be a lethal intake of morphine for the mother and acute blood loss due to self-stabbing at the neck for the siblings. The younger woman was under the effects of a large amount of heparin. Toxicological analysis was positive for opioids and alcohol in both siblings. Suicide pacts have rarely been described during the COVID-19 pandemic. In the few cases reported, the victims were more often relatives than people in a romantic relationship. The involvement of three people is unusual, as is the use of different suicide methods among the victims. In the presented case, the elderly mother's imminent death from terminal cancer, her concern over dying in a nondomestic environment, and the siblings' fear of being alone likely led to the conception of the suicide pact. Social isolation and economic difficulties also played a contributing role
Protective effect of a peptide derived from the endogenous PKC inhibitor PKI55 on the neurosecretory function in ischemic brain slices
We have recently identified the PKI55 protein, coding for 55 amino acids, that is normally poorly translated in vivo and acts as a specific modulator of either cPKC-α and nPKC-δ isozymes. PKI55 remains relatively inactive until PKC attains an active conformation and reaches a critical concentration in the cell; it is not modified by the enzyme but irreversibly associates with its target, thus behaving as a suicidal inhibitor. The inhibition and degradation of over-activated PKC isozymes may prevent unfavorable changes in cellular phenotypes, resulting from PKC overexpression (Selvatici, J Mol Evol 2003 57:131). In the present work we compared the in vitro biochemical activity of the PKI55 protein, of its 39-amino acids N-terminal fragment (G39) and of its 16 amino acids C-terminal fragment (G16) on specific PKC recombinant isozymes, by measuring the initial rate of phosphate incorporation from 32P-ATP into saturating amounts of histone IIIS. PKI55 concentration-dependently inhibited PKC activity, provided that calcium ions were present in the assay medium (IC50=6μM). The inhibitory activity was retained by G16 (IC50=50μM), but not by G39. The active fragment G16 was tested in an in vitro model of brain ischemia: superfused guinea pig cerebral cortex slices, continuously electrically (10 Hz) stimulated, were exposed to 20 min of oxygen-glucose deprivation (OGD, Badini, Neurochem Int 1997 31:817), and then reperfused for 1 hour (REP). PKC activity was increased to 244±36% at the end of OGD, while acetylcholine (ACh) release, taken as an index of the neurosecretory function, was reduced to 35±2% of the controls. Following REP, a reduction in PKC activity to 54±7% was displayed, indicating a down regulation of previously activated PKC (Selvatici, J Neurosci Res 2003 71:64). ACh release only partially recovered (REP=69±6% of the controls), suggesting persistence of neuronal suffering. PKC activation during OGD was attenuated by 50µM G16 and the consequent down regulation following REP was prevented. Moreover, ACh release fully recovered to normal values (REP+G16=91±4% of the controls). These data suggest a neuroprotective action for G16, the active fragment of the endogenous PKC inhibitor PKI55
Management of hydrosalpinx before IVF: A literature review.
Hydrosalpinx has a detrimental effect on the outcome of in vitro fertilization (IVF). Surgical intervention such as salpingectomy or tubal occlusion before IVF improves the outcome of IVF, but these procedures are often contraindicated in women with dense pelvic adhesions. Thus, it is worthwhile to search minimally invasive alternative therapies. The main objective of this review is to assess and compare the value of all the therapeutic options for hydrosalpinx before IVF. The results of the following procedures were compared: the laparoscopic treatments (salpingectomy/proximal tubal occlusion), the hysteroscopic insertion of device achieving tubal occlusion, the tuberous sclerosis and the aspiration of hydrosalpingeal fluid at the time of IVF procedure. Laparoscopic surgical treatment should be considered for all women with hydrosalpinx before IVF. Whenever laparoscopy is not recommended, hysteroscopic insertion of device seems the most effective option for management of hydrosalpinx before IVF
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