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1.
BMC Gastroenterol ; 23(1): 355, 2023 Oct 13.
Article in English | MEDLINE | ID: mdl-37833631

ABSTRACT

BACKGROUND AND AIMS: Anxiety and depression symptoms are common in IBD population, both adult and pediatric patients. Increased psychological distress might contribute to initiation and switching to biologic therapy in adult patients with IBD or other chronic inflammatory diseases. Aim of the present study are to evaluate anxiety and depression symptoms in IBD pediatric patients with disease remission and investigate their role in initiation or switching to biologic therapy. METHODS: We performed a retrospective analysis on IBD pediatric patients, assessing for anxiety (GAD-7) and depression (PHQ-9) symptoms. Demographic and disease characteristics were obtained from medical records. RESULTS: Eighty-six patients [31 (36%) females - mean age = 15.6 (SD = 2.8) years] were included. Patients scored above cut-off (> 10) on PHQ-9 and GAD-7 were 17 (19.7%) and 18 (20.9%), respectively. No differences were found between UC and CD patients. Baseline clinically relevant depression symptoms were significantly associated with the odds of initiating or switching to biologic therapy within 2 years [OR = 4.5 (1.4-14.3)], even after confounders adjustment [4.2 (1.2-14.9)]. Relationship was not significant with anxiety symptoms. CONCLUSION: Anxiety and depression symptoms is relatively common in pediatric IBD population, even with disease remission. Pediatric IBD patients with high depression symptoms are at increased risk of initiating or switching to biologic therapy. Mental health screening programs should be incorporated in routine clinical practice, especially for depression, regardless of disease activity and disease type. Early diagnosis and proper intervention for mental illness should be part of routine IBD management.


Subject(s)
Crohn Disease , Inflammatory Bowel Diseases , Adult , Female , Humans , Child , Adolescent , Male , Depression/epidemiology , Crohn Disease/diagnosis , Retrospective Studies , Inflammatory Bowel Diseases/complications , Inflammatory Bowel Diseases/drug therapy , Inflammatory Bowel Diseases/epidemiology , Anxiety/psychology , Biological Therapy
2.
J Biol Regul Homeost Agents ; 34(5 Suppl. 3): 111-118. Technology in Medicine, 2020.
Article in English | MEDLINE | ID: mdl-33386040

ABSTRACT

The aim of this study was to evaluate the periodontal healing of the distal sites of the mandibular second molars, comparing the extraction therapy of the third molar with and without PRF adjunct into the postextraction alveolus. The study sample was composed by 40 consecutive patients who underwent extraction of mandibular third molars. Patients were divided in two groups: the last 20 participants who have only been subjected to extraction (spontaneous healing group, SHG) and the first 20 patients who had PRF adjunct (PRF group, PG). Healing was evaluated by analyzing the variations in terms of PPD (Probing Pocket Depth), REC (Recession), CAL (Level of Clinical Attachment), BoP (Bleeding on Probing) and GI (Gingival Index) from Baseline to further follow-ups at 1 month and 3 months. The disto-vestibular (DV) and disto-lingual (DL) PPD values of the second mandibular molar were measured at Baseline and after three months in the two groups. Patients of the PG group showed lower PPD values at 1 month and 3 months postoperatively: DV: 3.6±1.09 - DL: 3.5±1.15 and DV: 2.5±0.83 - DL: 2.6±1.09, respectively. Patients belonging to the SHG also showed lower PPD values, reporting respectively the following DV values after 3 months: 2.7±0.86 - DL: 2.75±0. 85. However, there was no statistically significant difference comparing the results obtained in PG and SHG groups at 1 and 3 months (p>0.05). The insertion of PRF inside the post-extraction alveolus of the mandibular third molar leads to limited improvement in terms of periodontal healing, compared to extraction therapy only.


Subject(s)
Mandible , Molar, Third , Humans , Mandible/surgery , Molar/surgery , Molar, Third/surgery , Periodontal Index , Tooth Extraction
5.
Dis Esophagus ; 26(4): 388-91, 2013.
Article in English | MEDLINE | ID: mdl-23679029

ABSTRACT

Esophageal stenting represents a new strategy in the treatment of resistant or recurrent stenosis that obviates the need for multiple dilations. Our custom dynamic stent (DS) improves esophageal motility unlike the widespread self-expandable plastic or metallic esophageal stents. The DS allows food and secretions to pass in the space between the esophageal wall and the stent wall. This contrasts with the other types of stent, in which food passes into the stent that presses into the esophageal wall. Until the stent patent is complete, we use slices of silicon drains overlapped with each other to fashion the stent to the desired length and diameter (7-, 9-, or 12.7-mm external diameter). It is built coaxially on a nasogastric tube that guarantees the correct position. The two ends are tailored to allow an easy introduction and food passage between stent and esophageal wall. The stent is inserted after stricture dilations (Savary-Gilliard dilators) under fluoroscopic guidance. All patients who underwent stenting were treated with dexamethasone (2 mg/kg/day) for 3 days and proton pump inhibitors (omeprazole or lansoprazole, 1-2 mg/kg/day). From 1992 to 2012, 387 patients (mean age 38.6 months; range 3-125 months) with post-surgical esophageal stricture because of esophageal atresia correction were enrolled in this study. Twenty-six of 387 patients (6.7%) underwent custom DS placement for recurrent stricture instead of a program of serial dilations. The stent was left in place for at least 40 days and was effective in 21 (80.7%) of 26 patients. There were two stent-related major complications (subclavian-esophageal fistula). Our custom stent represents an effective and safe option in the treatment of severe and recurrent post-surgical esophageal strictures. Surgery with stricture resection, and reanastomosis or jeunoplasty represents the rescue strategy.


Subject(s)
Esophageal Atresia/surgery , Esophageal Stenosis/therapy , Postoperative Complications/therapy , Stents , Child , Child, Preschool , Esophageal Stenosis/etiology , Esophagoscopy , Fluoroscopy , Humans , Infant , Recurrence , Retrospective Studies , Treatment Outcome
6.
Pediatr Surg Int ; 29(6): 659-62, 2013 Jun.
Article in English | MEDLINE | ID: mdl-23417547

ABSTRACT

Rhabdomyosarcoma is the most common tumor of the biliary tract in children. Although some features at preoperative radiographic studies (ultrasound, CT, MRI) may be suggestive of BT-RMS, until few years ago the final diagnosis was obtained by either operative or transcutaneous biopsy, thus exposing to a risk of regional dissemination. More recent and still anecdotal, is the histological diagnosis on tissue obtained by transluminal biopsy either during transhepatic cholangiography or endoscopic retrograde cholangio-pancreatography (ERCP), the latter having the major advantage of a much lower risk of loco-regional dissemination. We present two cases of BT-RMS that were histologically diagnosed by intracholedocal biopsy performed during ERCP, after being suspected at conventional imaging.


Subject(s)
Biopsy/methods , Cholangiopancreatography, Endoscopic Retrograde/methods , Common Bile Duct Neoplasms/diagnosis , Common Bile Duct/pathology , Rhabdomyosarcoma/diagnosis , Child, Preschool , Diagnosis, Differential , Female , Humans , Male , Reproducibility of Results
7.
Int J Oral Maxillofac Surg ; 52(10): 1097-1105, 2023 Oct.
Article in English | MEDLINE | ID: mdl-36801183

ABSTRACT

The advantages of immediate implant placement for patients include a reduced number of surgical procedures and a shorter overall treatment time. Disadvantages include a higher risk of aesthetic complications. The aim of this study was to compare xenogeneic collagen matrix (XCM) versus a subepithelial connective tissue graft (SCTG) used for soft tissue augmentation in combination with immediate implant placement without provisionalization. Forty-eight patients requiring a single implant-supported rehabilitation were selected and assigned to one of two surgical procedures: immediate implant with SCTG (SCTG group) or immediate implant with XCM (XCM group). Marginal changes in the peri-implant soft tissue and the facial soft tissue thickness (FSTT) were assessed after 12 months. Secondary outcomes included peri-implant health status, aesthetics, patient satisfaction, and perceived pain. All of the implants placed were successfully osseointegrated, resulting in 1-year survival and success rates of 100%. The patients in the SCTG group had a significantly lower mid-buccal marginal level (MBML) recession (P = 0.021) and a greater increase in FSTT (P < 0.001) than the patients in the XCM group. Using xenogeneic collagen matrix during immediate implant placement significantly increased FSTT from the baseline, leading to good aesthetic and patient satisfaction results. However, the connective tissue graft yielded better MBML and FSTT results.


Subject(s)
Dental Implants , Humans , Collagen/therapeutic use , Connective Tissue , Esthetics, Dental , Prospective Studies
8.
Pediatr Med Chir ; 34(2): 89-95, 2012.
Article in English | MEDLINE | ID: mdl-22730634

ABSTRACT

BACKGROUND: Helicobacter pylori (Hp) infection is mainly acquired during childhood; it is recognised as a cause of gastritis and peptic ulcer and it has been classified as a group A carcinogen by World Health Organization. The exact mode of transmission is as yet, not known. Aim of our study has been to identify risk factors associated with Helicobacter pylori infection in a preschool and school population and to confirm if Hp antigen in faeces is useful as screening in epidemiological studies. METHODS: We interviewed, with questionnaire, 400 children (203 male; age range 3-10 years; mean age 6 years) of 3 different schools and stool samples were collected of all children too. 35 of 400 (8%) children underwent to upper gastrointestinal endoscopy because of a suspect of upper gastrointestinal disease. RESULTS: stool were collected from 400 school children and 35 of them shown positivity of Hp antigen test. A questionnaire about presence of nausea, vomit, recurrent abdominal pain, family size, parent's occupations and education, use of antibiotics, country of birth of child and parents, personal hygiene, breast feeding, presence of the animals was completed. 35 children with positive Hp stool antigen test and a suspicious of upper gastrointestinal disease (recurrent abdominal pain, diurnal or nocturnal abdominal pain, nausea, vomiting, iron deficiency) underwent to esophagogastroduodenoscopy (EGDS) that demonstrated antral gastritis and positive histology and urease rapid test. CONCLUSIONS: the results of this study suggest that risk factors for Hp infection are low socioeconomics factors, hygiene and living conditions and that Hp antigen in faeces is useful as screening test.


Subject(s)
Antigens, Bacterial/analysis , Feces/chemistry , Helicobacter Infections/diagnosis , Helicobacter Infections/epidemiology , Helicobacter pylori/immunology , Child , Child, Preschool , Environment , Family , Female , Helicobacter Infections/immunology , Humans , Incidence , Male , Risk Factors , Surveys and Questionnaires
9.
Int J Oral Maxillofac Surg ; 50(7): 956-963, 2021 Jul.
Article in English | MEDLINE | ID: mdl-33279377

ABSTRACT

Dental implant placement is a predictable therapy for replacing teeth. Nevertheless, mechanical, biological, and aesthetic complications frequently occur. The aim of this study was to compare the clinical outcomes of a xenogeneic collagen matrix (XCM) used at the time of implant placement as an alternative to a subepithelial connective tissue graft (SCTG), for soft tissue augmentation. This was a prospective clinical trial with 12 months of follow-up. In the control group, soft tissue augmentation at the time of implant placement was performed with a SCTG, while in the test group, a XCM was employed. At 12 months postoperative, all xenografts showed no postoperative complications. In both groups, a significantly greater thickness was observed on the buccal and occlusal sides from preoperative to 3 months postoperative (P<0.05). No statistically significant difference in pink aesthetic score (P=0.379, 6 months postoperative) or marginal bone loss (P=0.449 at 3 months postoperative, P=0.778 at 6 months postoperative) was observed between the groups. Statistically significant differences in pain perceived by the patients (P<0.0001) and the time to complete the surgical procedure (P=0.0008) were detected. At 12 months after surgery, XCM provided similar clinical results in terms of soft tissue augmentation on the buccal and occlusal sides as compared with the SCTG.


Subject(s)
Dental Implants , Collagen , Connective Tissue , Esthetics, Dental , Humans , Prospective Studies
10.
New Phytol ; 186(2): 415-28, 2010 Apr.
Article in English | MEDLINE | ID: mdl-20202130

ABSTRACT

*The delay in autumnal senescence that has occurred in recent decades has been linked to rising temperatures. Here, we suggest that increasing atmospheric CO2 may partly account for delayed autumnal senescence and for the first time, through transcriptome analysis, identify gene expression changes associated with this delay. *Using a plantation of Populus x euramericana grown in elevated [CO2] (e[CO2]) with free-air CO2 enrichment (FACE) technology, we investigated the molecular and biochemical basis of this response. A Populus cDNA microarray was used to identify genes representing multiple biochemical pathways influenced by e[CO2] during senescence. Gene expression changes were confirmed through real-time quantitative PCR, and leaf biochemical assays. *Pathways for secondary metabolism and glycolysis were significantly up-regulated by e[CO2] during senescence, in particular, those related to anthocyanin biosynthesis. Expressed sequence tags (ESTs) representing the two most significantly up-regulated transcripts in e[CO2], LDOX (leucoanthocyanidin dioxgenase) and DFR (dihydroflavonol reductase), gave (e[CO2]/ambient CO(2) (a[CO2])) expression ratios of 39.6 and 19.3, respectively. *We showed that in e[CO2] there was increased autumnal leaf sugar accumulation and up-regulation of genes determining anthocyanin biosynthesis which, we propose, prolongs leaf longevity during natural autumnal senescence.


Subject(s)
Anthocyanins/biosynthesis , Carbon Monoxide/pharmacology , Gene Expression Profiling , Gene Expression Regulation, Plant/drug effects , Populus/genetics , Seasons , Carbohydrates/analysis , Chlorophyll/metabolism , Genes, Plant/genetics , Metabolic Networks and Pathways/drug effects , Metabolic Networks and Pathways/genetics , Oligonucleotide Array Sequence Analysis , Plant Leaves/drug effects , Plant Leaves/metabolism , RNA, Messenger/genetics , RNA, Messenger/metabolism , Reproducibility of Results , Reverse Transcriptase Polymerase Chain Reaction , Time Factors
11.
Plant Cell Environ ; 33(12): 2001-11, 2010 Dec.
Article in English | MEDLINE | ID: mdl-20573048

ABSTRACT

Under elevated atmospheric CO(2) concentrations, soil carbon (C) inputs are typically enhanced, suggesting larger soil C sequestration potential. However, soil C losses also increase and progressive nitrogen (N) limitation to plant growth may reduce the CO(2) effect on soil C inputs with time. We compiled a data set from 131 manipulation experiments, and used meta-analysis to test the hypotheses that: (1) elevated atmospheric CO(2) stimulates soil C inputs more than C losses, resulting in increasing soil C stocks; and (2) that these responses are modulated by N. Our results confirm that elevated CO(2) induces a C allocation shift towards below-ground biomass compartments. However, the increased soil C inputs were offset by increased heterotrophic respiration (Rh), such that soil C content was not affected by elevated CO(2). Soil N concentration strongly interacted with CO(2) fumigation: the effect of elevated CO(2) on fine root biomass and -production and on microbial activity increased with increasing soil N concentration, while the effect on soil C content decreased with increasing soil N concentration. These results suggest that both plant growth and microbial activity responses to elevated CO(2) are modulated by N availability, and that it is essential to account for soil N concentration in C cycling analyses.


Subject(s)
Atmosphere , Carbon Cycle , Carbon Dioxide , Nitrogen Cycle , Soil/analysis , Trees/growth & development , Biomass , Fertilizers
12.
Eur Rev Med Pharmacol Sci ; 24(2): 930-934, 2020 01.
Article in English | MEDLINE | ID: mdl-32017000

ABSTRACT

OBJECTIVE: The objective of this work is to compare cellular toxicity in vitro of two resins for orthodontic use: an auto-polymerizable composite and a photo-polymerizable composite. MATERIALS AND METHODS: Samples were obtained by joining a couple of steel orthodontic brackets by using auto-polymerizing or photo-polymerizing resin. We used a halogen lamp, a mini LED lamp and a fast LED lamp used for orthodontics cure for 40 seconds. The 3T3 Swiss cellular line of fibroblasts was used. The samples obtained were used to determine the cellular toxicity in vitro using the Neutral Red Up-take (NRU) and the 3-(4,5-dimethylthiazol-2-Yl)-2,5-diphenyltetrazolium bromide (MTT) assay. RESULTS: Toxicity of the extract appraised at a low level at MTT and NRU assays. There were statistically relevant differences between the toxicity induced by the auto-polymerizing material and the toxicity induced by the photo-polymerizing composite material, polymerized with the blue-light lamp (p < 0.001) and with the mini LED lamp (p < 0.05). CONCLUSIONS: From the data collected in this study, we can conclude that both resins show a low level of cytotoxicity that, in the case of photochemical polymerizing resin, depends on the characteristics of the lamp.


Subject(s)
Acrylic Resins/toxicity , Composite Resins/toxicity , Fibroblasts/drug effects , Methylmethacrylates/toxicity , Resin Cements/toxicity , 3T3 Cells , Animals , Fibroblasts/pathology , Materials Testing/methods , Mice
13.
Eur Rev Med Pharmacol Sci ; 24(16): 8469-8476, 2020 08.
Article in English | MEDLINE | ID: mdl-32894553

ABSTRACT

OBJECTIVE: Few models of transition have been proposed for inflammatory bowel disease (IBD). The aim of the present study is to evaluate the feasibility of a transition model and the predictive factors for success/failure. PATIENTS AND METHODS: Patients with low activity or remission IBD were enrolled. Proposed model: three meetings every four-six weeks: the first one in the pediatric center (Bambino Gesù Children's Hospital); the second one, in the adult center (Foundation Polyclinic University A. Gemelli), with pediatric gastroenterologists; the last one, in the adult center, with adult gastroenterologists only. Questionnaires included anxiety and depression clinical scale, self-efficacy, quality of life, visual-analogic scale (VAS). Transition was considered successful if the three steps were completed. RESULTS: Twenty patients were enrolled (range 18-25 years; M/F: 12/8; Ulcerative Colitis/Crohn's Disease 10/10); eight accepted the transition program, four delayed the process and eight refused. Patients who completed transition generated higher scores on the resilience scale, better scores on well-being perception, and had lower anxiety scores. Patients who failed transition were mostly women. The perceived utility of the transition program was scored 7.3 on a VAS scale. CONCLUSIONS: The proposed transition program seems to be feasible. Psychological scores may help in selecting patients and predicting outcomes.


Subject(s)
Inflammatory Bowel Diseases/psychology , Transition to Adult Care , Adolescent , Adult , Female , Humans , Inflammatory Bowel Diseases/diagnosis , Male , Surveys and Questionnaires , Young Adult
14.
J Environ Biol ; 29(1): 25-9, 2008 Jan.
Article in English | MEDLINE | ID: mdl-18831327

ABSTRACT

Root-surface phosphatase activities were measured in natural and semi-natural shrublands across an European climatic gradient of temperature and rainfall including Wales (WL), Denmark (DK), Netherlands (NL), Hungary (HU), Italy (IT) and Spain (SP). In each site a warming experiment was conducted since 1999 or 2001 by means of passive night-time warming using reflective curtains that covered the vegetation at night. The treatments increased yearly average soil temperatures around 0. 8 degrees C in most of sites. Root-surface phosphatase activity values ranged between 56 mg PNP g(-1) h(-1) in IT and 3.5 mg PNP g(-1) h(-1) in HU. Warming had no effect on root-surface phosphatase activity across the sites and only in Hungary a slight increase was detected. Plants at Mediterranean sites (IT, SP) showed a higher root-surface phosphatase activity than plants at temperate sites (WL, NL, DK). We suggest it might be an adaptation of plant species evolved under Mediterranean climate that allows them a) to compensate in wet period for the decrease in phosphatase activity, and thus P uptake, during drought periods, and/or b) to benefit from soluble organic P flushes following the frequent drying-rewetting episodes experienced by soils in Mediterranean ecosystems.


Subject(s)
Ecosystem , Environmental Monitoring , Greenhouse Effect , Phosphoric Monoester Hydrolases/metabolism , Plant Roots/enzymology , Plants/enzymology , Soil/analysis , Europe , Geography , Rain
15.
Plant Physiol Biochem ; 133: 22-28, 2018 Dec.
Article in English | MEDLINE | ID: mdl-30388435

ABSTRACT

Populus nigra L. represents a model system for plant biology and has a productive interest in breeding for short rotation forestry. The growth potential and adaptive capacity of this species are well characterized, but the canopy effect is poorly investigated. We analyzed morphological and functional leaf traits across a multilayer canopy profile in two contrasting clones of this species, 58-861 and Poli, respectively from northern and southern Italy, grown in field plantation. The results revealed how the variation of leaf functional traits was structured within the canopy. The two clones showed differences in leaf morphology and water use efficiency, but organized a similar functional canopy structure along a vertical profile, related to a gradient of light radiation. An acropetal enrichment gradient of carbon stable isotope was found both in leaves and stem wood across a vertical canopy profile and a tight correlation was found between carbon stable isotopes of leaves and of the respective stem section. Such a functional relationship indicates that substrates for stem growth were sourced from leaf assimilates of the closest canopy layer. These results characterize the physiology of black poplar under micro-environmental conditions at intra-canopy scale and contribute to clarify the canopy effect in young trees.


Subject(s)
Cloning, Organism , Plant Stems , Populus , Quantitative Trait, Heritable , Plant Stems/genetics , Plant Stems/growth & development , Populus/genetics , Populus/growth & development
16.
Dig Liver Dis ; 38(4): 245-51, 2006 Apr.
Article in English | MEDLINE | ID: mdl-16198647

ABSTRACT

UNLABELLED: Eosinophilic oesophagitis is an emerging disease, well known also in paediatric age, probably caused by both IgE and non-IgE mediated food allergies, diagnosed by upper endoscopy with biopsy. The most severe complication is oesophageal stenosis. The identification of the offending allergens is often difficult; therapy is focused to eliminate the supposed antigenic stimulus, to control the acute symptoms and to induce long-term remission. AIM: We report the clinical outcome and the typical endoscopic findings of children and adolescents affected by eosinophilic oesophagitis, referring a proposal of diagnostic and treatment protocol. PATIENTS AND METHODS: Twelve patients, affected by eosinophilic oesophagitis with a histological diagnosis, underwent radiographic upper gastro-intestinal series, 24 h pH-probe and standardised allergic testing; they were treated with steroids (oral prednisone and swallowed aerosolised fluticasone) and elimination diet. Dilations were performed when eosinophilic oesophagitis was not yet diagnosed, or in patients resistant to conventional treatment. RESULTS: Two patients were lost to follow up (mean follow up: 1 year 11 months); seven patients have no symptoms and normal histology, five of them on restricted diet (without cow's milk protein) and two patients on elemental diet (amino acid formula). In two patients (no allergens identified), mild dysphagia and eosinophilic infiltration persist; one patients underwent Nissen fundoplication for Barrett's oesophagus: he has no symptoms and normal oesophagus, on restricted diet (without cow's milk/eggs protein and wheat). CONCLUSION: The recognition of typical endoscopic picture with careful biopsies extended to the whole oesophagus, even in emergency, could more quickly lead to the correct diagnosis and avoid severe complications of eosinophilic oesophagitis in children, as stricture and failure to growth. Elimination diet is the key of resolution when the allergens are identified. A great challenge remains the relation between gastro-oesophageal reflux disease and eosinophilic oesophagitis, which should however be explained.


Subject(s)
Eosinophilia/diagnosis , Eosinophilia/therapy , Esophagitis/diagnosis , Esophagitis/therapy , Food Hypersensitivity/complications , Administration, Inhalation , Administration, Oral , Adolescent , Aerosols , Androstadienes/therapeutic use , Anti-Inflammatory Agents/therapeutic use , Biopsy , Catheterization , Child , Child, Preschool , Endoscopy, Digestive System , Eosinophilia/etiology , Esophageal pH Monitoring , Esophagitis/etiology , Female , Fluticasone , Food Hypersensitivity/diagnosis , Food Hypersensitivity/therapy , Humans , Immunoglobulin E/blood , Infant , Male , Prednisone/therapeutic use , Prospective Studies , Retrospective Studies , Skin Tests , Upper Gastrointestinal Tract/pathology
17.
Reprod Fertil Dev ; 18(7): 781-8, 2006.
Article in English | MEDLINE | ID: mdl-17032587

ABSTRACT

Flow cytometry was utilised for the first time to independently measure five sperm parameters of individual spermatozoa of bull ejaculates to differentiate between outcome successes after artificial insemination (AI). These parameters included plasma membrane and acrosome integrity, mitochondrial functionality and DNA damage measured by sperm chromatin structure assay (SCSA) and terminal deoxynucleotide transferase-mediated dUTP nick end labelling (TUNEL) assays. For each parameter, results of 142 ejaculates (30 bulls) were ranked into three groups according to their flow cytometric measures: (1) ejaculates with the 25% lowest measures; (2) the 50% middle measures; and (3) the 25% highest measures. In total, 20 272 first-service inseminations (18 ;10(6) spermatozoa per AI dose) were performed, where fertility was defined as non-return within 60 days after first insemination. While plasma membrane and acrosome integrity, and mitochondrial functionality were not significantly related to fertility, data from SCSA and TUNEL assays were significantly associated with fertility. Ejaculates in SCSA group 1 had higher odds of AI success (1.07, 95% CI = 1.02-1.12), whereas those in group 3 had lower odds of AI success (0.94, 95% CI = 0.89-0.99), compared with the average odds of all three groups. Ejaculates in group 2 did not have significantly higher odds of AI success compared with the average odds. For TUNEL-positive spermatozoa, the odds of AI success was higher in group 1 compared with the average odds (1.10, 95% CI = 1.02-1.13), whereas odds of AI success in groups 2 and 3 were not significant compared with the average odds. In conclusion, despite the high number of spermatozoa per AI dose from high-quality bulls, both SCSA and TUNEL assays were valuable measures in this study for evaluating sperm quality in relation to fertility after AI.


Subject(s)
DNA Damage , Fertility/genetics , Spermatozoa/metabolism , Animals , Cattle , Color , DNA/genetics , Male , Norway , Semen
18.
Sci Total Environ ; 372(1): 256-65, 2006 Dec 15.
Article in English | MEDLINE | ID: mdl-17023027

ABSTRACT

Soil carbon (C) long term storage is influenced by the balance among ecosystem net primary productivity (NPP), the rate of delivery of new organic matter to soil pools and the decomposition of soil organic matter (SOM). The increase of NPP under elevated CO(2) can result in a greater production and higher turnover of fine roots or root exudation and, in turn, in an increase of labile C belowground. The aim of this work was to detect if changes in labile C substrates influenced the organic C storage in soils, verifying (i) whether treatments with elevated CO(2) and N fertilization induced changes in the amount and quality of labile C pools and in microbial C immobilization and (ii) whether these changes provoked modifications in the microbial C mineralization activity, and therefore changes in soil C losses. The effect of elevated CO(2) was a significant increase in both seasons (June and October 2004), of all labile C fractions: microbial biomass C (MBC), K(2)SO(4) extractable C (ExC), and water soluble C (WSC). The C/N ratio of the microbial biomass and of the K(2)SO(4) extractable SOM presented a seasonal fluctuation showing higher values in June, whereas the elevated CO(2) increased significantly the C/N ratio of these fractions independent of the season and the N addition, indicating a lower quality of labile SOM. Microbial respiration was more than doubled in October compared to June, confirming that changes in substrate quality and nutrient availability, occurring in the plantation at the beginning and at the end of the vegetative period, influenced the microbial activity in the bulk soil. Furthermore, the microbial respiration response to N fertilization was dependent on the season, with an opposite effect between June and October. The kinetic parameters calculated according to the first-order equation C(m)=C(0)(1-e(-kt)) were unaffected by elevated CO(2) treatment, except C(0)k and MR(basal), that showed a significant reduction, ascribable to (i) a lower quality of labile pools, and (ii) a more efficient microbial biomass in the use of available substrates. The C surplus found in elevated CO(2) soils was indeed immobilized and used for microbial growth, thus excluding a priming effect mechanism of elevated CO(2) on SOM decomposition.


Subject(s)
Carbon Dioxide/pharmacology , Carbon/analysis , Fertilizers , Nitrogen/pharmacology , Soil Microbiology , Nitrates/analysis , Populus , Quaternary Ammonium Compounds/analysis , Soil
19.
J Plant Physiol ; 200: 1-6, 2016 Aug 01.
Article in English | MEDLINE | ID: mdl-27295395

ABSTRACT

Species like black poplar characterized by an indeterminate growth, can acclimate to the changing environmental conditions during the seasons through a modification of morphological and physiological features. The acclimation results fundamental for the increasing evapo-transpirative demand and water availability. In this perspective, each generation of leaf becomes an indicator of physiologic performance, determining the short-term plasticity (acclimation) of a genotype to different environmental conditions. The main objective of this work is to analyse the physiological adjustment by morphological and physiological features of leaves in two contrasting genotypes of Populus nigra L., growing in a common environment. The mesic genotype 58-861 (Northern Italy) reacts to the increasing dry conditions keeping constantly higher values of δ(13)C while the xeric genotype Poli (Southern Italy) shows lower values, despite no significant differences in the gas exchanges. Morphological and stomatal leaf traits were the main drivers of the different behaviour in the two genotypes to face the "temporal" environment, but different from the provenance. In particular the results, especially in the development phases, demonstrate how phenotypic plasticity is evident at seasonal scale, playing a role for the success of an indeterminate-growing species. They could also be generalized for similar experiments and could support further investigation about short-term plasticity.


Subject(s)
Populus/genetics , Populus/physiology , Ecosystem , Genotype , Plant Leaves/anatomy & histology , Plant Leaves/growth & development , Populus/growth & development , Quantitative Trait, Heritable , Seasons
20.
Acta Otorhinolaryngol Ital ; 36(5): 368-372, 2016 Oct.
Article in English | MEDLINE | ID: mdl-27958596

ABSTRACT

Maxillo-mandibular asymmetry has numerous aetiologies: congenital, traumatic, iatrogenic and post-oncologic. Patients with congenital dentofacial malformations are generally submitted to orthognathic surgery and/or additional procedures (genioplasty, alloplastic implants) with satisfactory results. However, despite achieving skeletal symmetry, noticeable facial asymmetry may persist.This study was performed in 45 patients (29 women and 16 men) operated between December 2012 and June 2014. All patients were affected by maxilla-mandibular asymmetry and underwent orthognatic surgery for hard tissue correction of the deformity. Residual facial alterations were then treated with lipofilling refinement proceure. In all cases good integration of the grafted fat was observed in the recipient sites. Retrospective analysis of photographic documentation showed progressive volumetric decrease for up to approximately 6 months after surgery; after that graft volume remained relatively stable. There were no significant surgical complications, either from the fat harvest site or the reconstructed site. Mild oedema and bruising were frequent during the first post-operative week. No haematomas, infections, vascular or nervous injuries were recorded. Twenty-four patients felt the need to have a second procedure. A second fat transfer was performed in 22 cases, and a third in 2 (total of 69 procedures). Based on the observations of our study, fat grafting is a simple, effective and reproducible technique, with a high satisfaction rate and few disadvantages or complications. We demonstrated that the success of lipofilling is dependent on the treated aesthetic subunits of the face. The malar and lateral cheek regions seem to be highly favourable for fat grafting, unlike the upper and lower lips subunits. Composite procedures using orthognathic surgery and autologous fat provide the surgeon with an additional, more customisable option for patients with maxillo-mandibular malformations.


Subject(s)
Adipose Tissue/transplantation , Mandible/abnormalities , Mandible/surgery , Maxilla/abnormalities , Maxilla/surgery , Abnormalities, Multiple/surgery , Adult , Female , Humans , Male , Orthognathic Surgical Procedures/methods , Plastic Surgery Procedures/methods , Retrospective Studies , Young Adult
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