A modified trans-anconeus approach to facilitate fixation of a posterior radial head fracture: a cadaveric feasibility study / 대한해부학회지

Fixation of radial head fracture with minimally invasive posterior approach remains a significant challenge. The aim of this study was to determine the feasibility of trans-anconeus posterior elbow approach and to observe lateral ulnar collateral ligament (LUCL) in extended elbows. This cadaveric study was performed in twenty upper limbs of fresh fixed adult male cadavers. An oblique incision was made in the middle segment of anconeus until the lateral ligament complex and the joint capsule had been revealed. A deep dissection was explored to observe the anatomical relationship of the LUCL to the anconeus. Measurements of the LUCL were recorded while the elbow was fully extended. The mean distance between the edge of the radial head and the proximal insertion of the LUCL was 13.3 mm (11.5–16.2 mm); the mean distance between the edge of the radial head and the distal insertion of the LUCL was 20.9 mm (19.2–23.4 mm); the distance between the edge of the radial head and the distal edge of the annular ligament was 11.2 mm (8.22–11.7 mm). By estimate correlation of the previous measurements, the direct and accessible way to expose the posterolateral articular capsule of the elbow joint was through a window in medial 2/3 of the middle segment of anconeus muscle. These trans-anconeus approach is useful. It provides good visualization, facilitates applying the implants, and lessens the risk of radial nerve injury. Awareness of the anatomy is mandatory to avoid injury of LUCL.

Effects of Vitamin D On Cisplatin Induced Heart and Lung Toxicity in Albino Rat

Background: While Cisplatin (CP) is a powerful DNA alkylating agent used to treat many malignancies, its clinical use is linked to a number of negative side effects. It has been proposed that vitamin D can shield biological systems against harm caused by CP. The current study’s objective was to look into how vitamin D protects the rat heart and lung against cisplatin-induced damage. Material and methods: Thirty adult male Albino rats; 180–220 g body weight were allocated into 3 groups; Group I (n=10) receiving saline, Group II (n=10); rats receiving CP (single dose of 6.5 mg/kg intraperitoneal) and Group III (n=10); receiving CP and 50 ng/kg/day alfacalcidol. Results: Alterations included a significant increase in malondialdehyde (MDA) level in the CP group compared with the other groups (p value for comparing between control and each other group, statistically significant at p < 0.05). Histopathologically, CP induced severe changes were observed. However, the CP-induced disturbances significantly improved by treatment with Vitamin D. Conclusion: According to this study, CP treatment significantly harmed rats’ hearts and lungs; however, treatment with vitamin D significantly lessened these harms.

Protective Role of Quercetin on Thioacetamide-Induced Renal Injury in Adult Male Albino Rats

Background: Thioacetamide (TAA) is a recognized industrial poisonous agent drastically used in animal studies for induction of hepatic necrosis, fibrosis and cirrhosis. It is additionally reported to be nephrotoxic through induction of oxidative stress. Quercetin (QE) has a high antioxidant capacity via free radical scavenging, transition metal ion binding, and lipid peroxidation inhibition. Aim of the work: The goal of this research was to see if QE may help reduce the negative effects of thioacetamide on renal tissue by histological examination of the kidney. Material and methods: Twenty four adult male Albino rats 7–9 weeks old around 180–200g body weight were allocated into 3 groups; Group I (n=8) receiving distilled water, Group II (n=8); rats receiving TAA and Group III (n=8); receiving TAA and QE. Results: Renal tissues were examined under a light microscope stained by Harris Hematoxylin & Eosin (H&E stain), Periodic acid Schiff (PAS) and Masson’s Trichrome for TAA-treated groups revealed severe histopathological changes, whereas specimens obtained from QE-treated groups showed only mild changes. Immunohistochemical results corroborated these findings. Conclusion: This study demonstrated the ameliorative consequences of QE in opposition to TAA-induced renal injury in rats. The result of this study might contribute in the development of a novel complementary alternative medication in combating and therapeutic intervention of TAA-induced renal injury.

Resin Nano-Ceramic Material Surface Roughness, Color Stability, and Bacterial Adhesion Evaluation After Different Scaling Methods / Rugosidade superficial, estabilidade de cor e adesão bacteriana de resina nano-cerâmica após diferentes métodos de raspagem

Objective: TThe study evaluated in vitro the changes in roughness, color stability, and bacterial count of a CAD/CAM Resin Nano-Ceramic material surface treated by various scaling procedures. Material and Methods: 70 disks (5mm diameter, 0.5 mm thickness) of Resin Nano-Ceramic (Lava ™Ultimate, 3M, ESPE) material were cemented in standardized cavities prepared in bovine teeth. A custom-made scaling apparatus of a double pan balance was used for different scaling methods, simulating standard clinical conditions. The specimens were assigned to three main groups: no scaling(C), ultrasonic scaling (U), and manual scaling (M). Each group was then divided into three subgroups according to scaling tip material; stainless steel tip (St), plastic tip (P), and titanium tip (Ti). The surface texture was analyzed quantitatively and qualitatively with a tactile profilometer and atomic force microscopy. A spectrophotometer was used for color measurement. Streptococcus mutans were counted in a colony counter. All the data were tabulated and statistically analyzed. Results: Two-way ANOVA was used to study the effect while One-way ANOVA was performed to compare between study groups. The significance level was set at p ≤ 0.05. The ultrasonic titanium tip(UTi) revealed the significant highest mean value of alterations (p < 0.001). The integrity of the material surface was altered in the form of deep scratches on the ultrasonically scaled surfaces and numerous smaller scratches on the hand-scaled surfaces. Conclusion: The plastic instrument would appear to be the instrument of choice during a routine maintenance procedure for Resin Nano-Ceramic materials (AU).

Objetivo: Este estudo avaliou in vitro as alterações na rugosidade, estabilidade de cor e quantidade de bactérias da superfície de uma resina nano-cerâmica produzida em CAD/CAM tratada por diferentes procedimentos de raspagem. Material e Métodos: 70 discos (5 mm diâmetro, 0,5 espessura) de resina nano-cerâmica (Lava ™Ultimate, 3M, ESPE) foram cimentadas em cavidades padronizadas preparadas em dentes bovinos. Um aparato customizado de raspagem com pratos duplos de balança foram usados para os diferentes métodos de raspagem, simulando uma condição clínica padronizada. Os espécimes foram distribuídos em três principais grupos: Sem raspagem (C), raspagem ultrassônica (U) e raspagem manual (M). Cada grupo foi dividido em três subgrupos de acordo com a ponta do material de raspagem; ponta de aço inoxidável (St), ponta plástica (P), ponta de titânio (Ti). A textura da superfície foi analisada qualitativamente e quantitativamente por um perfilômetro tátil e microscopia de força atômica. Um espectrofotometro foi usado para a mensuração da cor. Estreptococos mutans foram contados em um contador de colônias. Todos os dados foram tabulados e analisados estatisticamente. Resultados: Anova dois fatores foi utilizado para estudar os efeitos, enquanto ANOVA um fator foi utilizado para comparar os grupos experimentais. O nível de significância foi estabelecido em p≤ 0,05. A ponta de ultrassom de titânio (UTi) revelou o valor significante mais alto de alterações (p < 0,001). A integridade da superfície d matérias foi alterada na forma ranhuras profundas, nas superfícies raspada por ultrassom e numerosas ranhuras menores nas superfícies raspadas à mão. Conclusão: O instrumento plástico poderia apresentar-se como um instrumento de escolha durante o pocedimento de manutenção routineira para materiais de resina nano-ceramica. (AU)

Fracture Resistance of Anterior CAD/CAM Nanoceramic Resin Endocrowns with Different Preparation Designs / Resistência à Fratura de Endocrowns de Resina Nanocerâmica CAD / CAM Anterior Com Diferentes Projetos de Preparação

Objective: The aim of the study was to evaluate the effect of extension of endocrown in pulp space and the effect of ferrule on the fracture resistance of anterior endocrowns made of nano-ceramic resin blocks. Material and Methods: Twenty-eight freshly extracted human upper central incisor teeth were prepared to receive CAD/CAM nanoceramic resin endocrowns with four different designs. The specimens were divided into two groups (n = 14) according to the extension of the endocrown inside root canal (A:short and B:long), then each group was further subdivided into another two subgroups (n = 7) according to the presence or absence of ferrule effect (1:ferrule and 2: no ferrule). Endocrowns were then fabricated using CEREC in lab and nanoceramic resin blocks (DENTSPLY Sirona, Germany) and LAVA ultimate (3M ESPE, Germany) blocks size 14L. Results: Two-way ANOVA showed that the ferrule (p > 0.0001) had statistically significant effect on the fracture resistance. However, the extension of the endocrown into the canal had no statistical significant effect on the fracture resistance (p = 0.837). The interactions between the independent variables (extension into the canal and ferrule) had statistically significant effect on the fracture resistance (p = 0.029). Load to fracture for group 1A was 439.53 N, 1B was 306.46 N, 2A was 516.29 N and 2B was 242.04 N. Conclusions: Fracture resistance was not improved by the long or short extensions of the endocrowns in the pulp space, however, the ferrule effect shows significant improvement of the fracture resistance of the nanoceramic resin endocrowns. (AU)

Objetivo: O objetivo deste estudo foi avaliar o efeito da extensão da coroa endocrown na câmara pulpar e o efeito férula na resistência à fratura de coroas endocrowns anteriores confeccionadas através de blocos de resina nanocerâmica. Material e Métodos: Vinte e oito dentes incisivos centrais superiores humanos recém-extraídos foram preparados para receber endocrowns de resina nanocerâmica CAD / CAM com quatro diferentes tipos de preparos. Os espécimes foram divididos em dois grupos (n = 14) de acordo com a extensão da endocrown dentro do canal radicular (A: curto e B: longo), então cada grupo foi subdividido em outros dois subgrupos (n = 7) de acordo com presença ou ausência do efeito férula (1: com férula e 2: sem férula). As endocrowns foram usinadas através do CEREC In Lab e blocos de resina nanocerâmica (DENTSPLY Sirona, Alemanha) e blocos de LAVA ultimate (3M ESPE, Alemanha) tamanho 14L. Resultados: ANOVA dois fatores demostrou que a férula (P> 0,0001) teve efeito estatisticamente significativo na resistência à fratura. No entanto, a extensão do endocrown no canal não teve efeito estatisticamente significativo na resistência à fratura (P = 0,837). As interações entre as variáveis independentes (extensão no canal e férula) tiveram efeito estatisticamente significativo na resistência à fratura (P = 0,029). A carga para fratura do grupo 1A foi de 439,53 N, 1B foi de 306,46 N, 2A foi de 516,29 N e 2B foi de 242,04 N. Conclusões: A resistência à fratura não foi melhorada pelas extensões longas ou curtas das endocrowns na câmara pulpar, no entanto, o efeito férula mostrou uma melhora significativa na resistência à fratura das coroas endocrowns de resina nanocerâmica (AU)

An in vitro evaluation of surface roughness, color stability and bacterial accumulation of lithium disilicate ceramic after prophylactic periodontal treatment / Avaliação in vitro da rugosidade superficial, estabilidade de cor e acúmulo bacteriano em cerâmica de dissilicato de lítio após tratamento de profilaxia periodontal

Objective: To evaluate the effect of scaling procedures using different ultrasonic tips on the surface roughness, color stability and bacterial accumulation of lithium disilicate ceramic. Material and Methods: Scaling procedure was carried out using ultrasonic scaler (Satalec, Acteon, North America) with stainless-steel tip (US), titanium tip (UT) and plastic tip (UP), on disc shaped lithium disilicate samples cemented into a cavity prepared onto the labial surface of freshly extracted bovine teeth (10 samples per group). The samples were stored in coffee solution in an incubator at 37°C for 12 days, which is equivalent to 1 year of coffee consumption. The surface roughness was measured before and after the scaling procedure using a profilometer and atomic force microscopy. The color parameters were measured before and after scaling and staining procedures using VITA Easyshade Advance 4.0 according to the CIE L*a*b* color order system. The samples were then incubated with Streptococcus mutans (S. mutans) suspension. After incubation, the plates with 30 to 300 typical colonies of S. mutans were counted in a colony counter and mean values of colony forming units were obtained (CFU/mL). Results:The titanium scaling tip showed a statistically significant higher mean values of change in surface roughness ΔRa and bacterial count than the plastic scaling tip. Color changes (ΔE) were not a statistically significant among the groups. The results showed a statistically significant positive (direct) correlation between surface roughness and color change (p = 0.012) and also between surface roughness and bacterial count (p = 0.00). Conclusion: Within the limitations of this study, titanium scaling instruments cause irreversible surface alterations of lithium disilcate ceramics which was in direct correlation to the color changes and bacterial accumulation; therefore, dentists should proceed with caution when scaling lithium disilicate surfaces. The findings of the current study may indicate the need for instruments or equipment that can remove plaque and calculus without causing surface damage (AU)

Introdução: Avaliar o efeito de procedimentos de raspagem com diferentes pontas de ultrassom na rugosidade superficial, estabilidade de cor e acúmulo bacteriano em cerâmica de dissilicato de lítio. Material e Métodos: O procedimento de raspagem foi realizado usando um aparelho de ultrassom (Satalec, Acteon, América do Norte) com ponta de aço inoxidável (US), ponta de titânio (UT) e ponta de plástico (UP), em amostras de dissilicato de lítio em forma de disco cimentadas em uma cavidade preparada na superfície vestibular de dentes bovinos recém-extraídos (10 amostras por grupo). As amostras foram armazenadas em solução de café em incubadora a 37 ° C por 12 dias, o que equivale a 1 ano de consumo de café. A rugosidade da superfície foi medida antes e após o procedimento de raspagem usando um perfilômetro e um microscópio de força atômica. Os parâmetros de cor foram medidos antes e depois dos procedimentos de raspagem e armazenagem no café usando VITA Easyshade Advance 4.0 de acordo com o sistema de ordem de cores CIE L*a*b*. As amostras foram incubadas com suspensão de Streptococcus mutans (S. mutans). Após a incubação, as placas com 30 a 300 colônias típicas de S. mutans foram contadas em contador de colônias e obtidos os valores médios das unidades formadoras de colônias (UFC / mL). Resultados: A ponta de titânio mostrou valores estatisticamente maiores de mudança na rugosidade da superfície ΔRa e contagem de bactérias do que a ponta de raspagem de plástico. A mudança de cor (ΔE) não foi estatisticamente significativa entre os grupos. Os resultados mostraram uma correlação positiva (direta) estatisticamente significativa entre rugosidade superficial e alteração de cor (p = 0,012) e também entre rugosidade superficial e contagem bacteriana (p = 0,00). Conclusão: Dentro das limitações deste estudo, os instrumentos de raspagem de titânio causam alterações irreversíveis na superfície das cerâmicas de dissilicato de lítio que estão em correlação direta com as mudanças de cor e o acúmulo de bactérias. Portanto, os dentistas devem proceder com cautela ao realizar raspagem em superfícies de dissilicato de lítio. Os resultados deste estudo podem indicar a necessidade de instrumentos ou equipamentos que possam remover a placa e cálculo sem causar danos à superfície. (AU)

Comparative study between intra-operative ventilatory techniques to prevent postoperative pulmonary complications in obese patients undergoing laparoscopic surgery

Background: Managing ventilation and oxygenation during laparoscopic procedures in morbidly obese patients undergoing surgery represents many challenges. There is no specific guideline on the ventilation modes for this group of patients. Although several studies have been performed to determine the optimal ventilatory settings for those patients, the answer is yet to be found. The aim of this study was to determine which mode of ventilation is more effective in improvement of intraoperative oxygenation and prevention of postoperative pulmonary atelectasis with its consequences is PEEP 10cm H[2]O alone is effective or Recruitment maneuver followed by PEEP 10 cm H[2]O has better results

Aim of the work: The study will be performed to compare different intra-operative ventilatory techniques that prevent early postoperative pulmonary complications espescially atelectasis in obese patients undergoing laparoscopic surgery

Patients and methods: This prospective, interventional, therapeutic, randomized clinical study was conducted at Ain Shams University Hospitals, operating theatre department on 100 morbidly obese adult patients of ASA physical status II, admitted to Ain Shams university hospital, scheduled for elective laparoscopic surgery either bariatric or non bariatric. The study was carried out after approval of the departmental ethical committee. The patients were subdivided into 4 groups A, B, C and D, [25] patients for each group

Results: Regarding the value of PO2/ Fi O2, there is no statistically significant difference between all groups in the preoperative and intra operative values. But there is statistically significant increase in group D and group C respectively compared to group A and B in both post operative and 6 hours post operative values. Regarding CT chest, Group A showed the highest number of both lobar and segmental atelectasis followed by group B which showed also a high number of segmental atelectasis. In despite, group C showed a higher number of plate and lamellar atelectasis followed by group D that showed a high number of lamellar atelectasis but the lowest number of other atelectasis scores

Conclusion: In conclusion, repeated Recruitment Maneuvers combined with 10 cm H[2]O of PEEP have beneficial effects on oxygenation continued into the early recovery period and decrease pulmonary complications in the early post operative period in morbid obese patients undergoing laparoscopic surgery

Recommendations: Further studies on a larger scale of patients are needed to confirm the results obtained by this work

Effect of different lung ventilatory patterns during and after cardiopulmonary bypass on oxygenation parameters after cardiac surgery in adults: a comparative study

Background: pulmonary complications after cardiac surgery recorded incidence of 25% of all cardiac surgeries. Ventilation strategies before and after CPB also cause problems. Alveolar over-distention and reduced lung recruitment are involved in lung injury during general anesthesia in cardiac surgeries. Protective lung ventilation is a common practice during general anesthesia and includes positive end expiratory pressure [PEEP], recruitment maneuvers and the use of FiO2 levels not greater than 80%

Aim of the Work: the aim of the study was to compare the effect of application of continuous positive airway pressure [C-PAP] ventilation during cardiopulmonary bypass and application of positive end expiratory pressure [PEEP] after cardiopulmonary bypass [CPB] per se or followed by lung recruitment [RM] in the intensive care unit [ICU] on arterial oxygenation after cardiopulmonary bypass

Patients and Methods: after obtaining approval from the medical ethical committee, this study was conducted at Cardiothoracic Academy of Ain Shams University and Ain Shams University specialized hospitals. The study included 66 patients divided into three equal groups

Conclusion: the application of alveolar recruitment strategy showed short term improvement in the arterial oxygenation and ventilation perfusion mismatch in patients undergoing CABG using CPB. Further studies are needed to determine if this beneficial effect of recruitment maneuvers could be further prolonged and produce more lasting clinical effects

Effect of intramuscular administration of dexamethasone on the duration of labor induction

Background: induction of labor is a common obstetric procedure which is performed for a variety of medical and non-medical indications. If the cervix is unfavourable, prior ripening of the cervix makes induction of labor easier and more succeful. There are different methods for ripening of the cervix and making it ready for induction. These methods included medical methods such as the administration of prostaglandins, and mechanical methods such as extra amniotic saline infusion, traction on the cervix with Foley catheter and laminaria

Aim of the Work: the aim of the study is to evaluate the efficacy of intramuscular dexamethazone injection prior to induction in improving progression and duration of labour phases

Patients and Methods: this study started with 100 Nulliparous Pregnant women who were conducted at the labor wards of Ain Shams Maternity Hospital. The studied subjects were randomized into two groups: Dexamethasone group: This group included 50 Nulliparous women [N=50], called A group. Control group: This group included 50 Nulliparous woman [N=50], called B group

Results: in this study the duration of active and second stages was decreased without change on mode of delivery. The study no significant statistical differences between the two studied groups as regards fetal heart rate. The duration of second stage in dexamethasone group was shorter than in the control group. Dexamethasone intramuscularly prior to induction significantly shortens duration of normal labor in normal parturants with minimal complications

Conclusion: an intramuscular injection of dexamethasone before labor induction is found to shorten the duration of labor induction by decreasing the interval between the initiation of induction and the beginning of the active phase, duration of active phase and duration of second stage of labor with no observed maternal or neonatal complications

Effect of adding dexamethasone to bupivacaine in ultrasound guided supraclavicular brachial plexus block versus bupivacaine alone for upper limb orthopedic surgery; a comparative study

Background: Brachial plexus blocks are among the most commonly performed peripheral nerve blocks for upper extremity surgeries in clinical practice. Local anesthetics alone for supraclavicular brachial plexus block provide good operative conditions but have shorter duration of postoperative analgesia. Several adjuvants added to local anaesthetics in brachial plexus block are used to achieve quick, dense, and prolonged block. Dexamethasone has been shown to prolong peripheral nerve blockade in animals and, when added to bupivacaine, to extend the duration of analgesia in humans

Objective: The aim of the current study was to evaluate the effects of adding dexamethasone [8 mg] to 28 ml of bupivacaine 0.5% in ultrasound-guided supraclavicular brachial plexus block for upper limb orthopaedic surgery versus bupivacaine 0.5% alone

Patients and Methods: The study included patients scheduled for elective upper limb orthopaedic surgery. A randomized double-blinded controlled study is the design used in this study. It was carried on 40 patients who were divided into two groups; 20 patients of each: group B [control group]: patients received 28 ml of bupivacaine 0.5% + 2 ml of normal saline and group D [study group]: patients received 28 ml of bupivacaine 0.5% + 8 mg of dexamethasone [2 ml]

Results: There was significant difference between both groups as regards the onset of sensory and motor block, group D has faster onset sensory block [10.30 +/- 2.27 versus 12.85 +/- 2.5 minutes, as well as motor block [15.15 +/- 2.37 versus 18.25 +/- 2.22 minutes]. The duration of sensory block was significantly prolonged in group D than in group B [18.45 +/- 2.26 versus 10.33 +/- 1.54 hours] as well as the duration of motor block [14.18 +/- 2.24 versus 8.34 +/- 1.50 hours]. There was significant prolongation of the duration of postoperative analgesia and less doses of postoperative rescue analgesic in group D

Conclusion: We concluded that addition of 8 mg of dexamethasone to bupivacaine 0.5% in ultrasound guided supraclavicular brachial plexus block shortened the onset times of both sensory and motor blocks, significantly prolonged their durations, and prolonged the analgesia of brachial plexus block with subsequent consumption of less amount of postoperative analgesics in comparison to bupivacaine 0.5% alone

Color Doppler and duplex study in assessment of recipient patients in post liver transplantation

Background: Liver transplantation is currently accepted as a first line treatment for patients with end-stage acute or chronic liver diseases. Graft survival and overall patient survival have steadily improved since the first transplants were performed in the early 1960s, but a significant percentage of transplants develop complications related to vascular and biliary insufficiency. Graft ischemia after liver transplantation is associated with a high incidence of morbidity and mortality

Aim of the Work: was to evaluate the sensitivity of Duplex ultrasound in detection most of vascular complication after liver transplantation in correlation with CT angiography

Patients and Methods: The study was done from July 2017 until January 2018, where 20 cases who underwent living donor liver transplantation with post-operative complications. The cases were done at Dar Al Fouad Hospital and National Liver Institutes. The cases were 16 males and 4 females. All cases where admitted to post-transplanting intensive care unit in the postoperative period where a routine full laboratory and radiological assessment were done. The laboratory assessment included full liver function tests, kidney function tests, complete blood picture, and C-Reactive Protein. Immunosuppressant level and bilirubin level in drains had also done

Results: The patient age ranges from 43 to 80 years with the mean age of 61.5 years. Eighteen cases had hepatitis C related cirrhosis [90%] One case had veno-occlusive disease related cirrhosis [Budd Chiari syndrome]. One case was Wilson disease. About 95% of cases were suffering from end stage liver disease. The results we have reached are that Doppler U/S sensitivity in diagnosis of these complications is about 75%

Conclusion: It could be concluded that gray-scale US and color Doppler are the investigations of choice in postoperative liver transplantation. They can be used as routine steps in the assessment of liver transplant graft postoperatively in recipient patient as early as possible within the first 3 days after operation and used as a late follow up, as they are noninvasive, safe, cheap, and accurate. Routine use of grayscale US and color Doppler showed to minimize the impact of postoperative complications and maximize both graft and recipient patient survival

The Possible Role of Mesenchymal Stem Cells Therapy in the Repair of Experimentally Induced Colitis in Male Albino Rats

BACKGROUND AND OBJECTIVES: Colitis is inflammation of the colon which can be transmural or confined to the mucosa. Colitis may be acute or chronic. In case of serious intestinal discontinuity of epithelium, the regeneration capacity of local stem cells is not enough to complete tissue repair. Bone marrow mesenchymal stem cells (BM-MSCs) migrate into the gastrointestinal wall, where they may contribute to the repair progress. The present study aimed at evaluating the possible therapeutic effect of MSCs on induced colitis in albino rat. METHODS AND RESULTS: Twenty male albino rats were divided into 3 groups (control, colitis, MSCs), control group (4 rats), colitis group (8 rats) received once intra-rectal injection of 2 ml of 3% acetic acid. MSCs therapy group (8 rats) injected with MSCs 24 hours after colitis induction. In each group, rats were subdivided into subgroups (a & b). Subgroup (a) corresponds to rats sacrificed 3 days and subgroup (b) corresponds to rats sacrificed 10 days after colitis induction. Isolation and culture of MSCs from rat bone marrow were performed. Colon sections were examined using light and fluorescent microscopy. Colon specimens were subjected to histological, morphometric and statistical studies. In colitis group, ulceration, loss of surface columnar epithelium, disturbed crypts architecture with few goblet cells and huge lymphatic nodule piercing the muscularis mucosa were reported. In stem cell therapy group, MSCs stimulate colonic repair through differentiation into several cells and dampen the inflammation. CONCLUSIONS: MSCs represent future therapeutic hopes for intestinal injury and chronic intestinal inflammatory states.

Tissue Regeneration and Stem Cell Distribution in Adriamycin Induced Glomerulopathy

BACKGROUND AND OBJECTIVES: Glomerulosclerosis develops secondary to various kidney diseases. It was postulated that adriamycin (ADR) induce chronic glomerulopathy. Treatment combinations for one year did not significantly modify renal function in resistant focal segmental glomerulosclerosis (FSGS). Recurrence of FSGS after renal transplantation impacts long-term graft survival and limits access to transplantation. The present study aimed at investigating the relation between the possible therapeutic effect of human mesenchymal stem cells (HMSCs), isolated from cord blood on glomerular damage and their distribution by using ADR induced nephrotoxicity as a model in albino rat. METHODS AND RESULTS: Thirty three male albino rats were divided into control group, ADR group where rats were given single intraperitoneal (IP) injection of 5 mg/kg adriamycin. The rats were sacrificed 10, 20 and 30 days following confirmation of glomerular injury. In stem cell therapy group, rats were injected with HMSCs following confirmation of renal injury and sacrificed 10, 20 and 30 days after HMSCs therapy. Kidney sections were exposed to histological, histochemical, immunohistochemical, morphometric and serological studies. In response to SC therapy multiple Malpighian corpuscles (MC) appeared with patent Bowman's space (Bs) 10 and 20 days following therapy. One month following therapy no remarkable shrunken glomeruli were evident. Glomerular area and serum creatinine were significantly different in ADR group in comparison to control and SC therapy groups. CONCLUSIONS: ADR induced glomerulosclerosis regressed in response to cord blood HMSC therapy. A reciprocal relation was recorded between the extent of renal regeneration and the distribution of undifferentiated mesenchymal stem cells.

Effect of Stem Cell Therapy on Adriamycin Induced Tubulointerstitial Injury

BACKGROUND AND OBJECTIVES: It was postulated that adriamycin (ADR) induce renal tubulointerstitial injury. Clinicians are faced with a challenge in producing response in renal patients and slowing or halting the evolution towards kidney failure. The present study aimed at investigating the relation between the possible therapeutic effect of human mesenchymal stem cells (HMSCs), isolated from cord blood on tubular renal damage and their distribution by using ADR induced nephrotoxicity as a model in albino rat. METHODS AND RESULTS: Thirty three male albino rats were divided into control group, ADR group where rats were given single intraperitoneal (IP) injection of 5 mg/kg adriamycin. The rats were sacrificed 10, 20 and 30 days following confirmation of tubular injury. In stem cell therapy group, rats were injected with HMSCs following confirmation of renal injury and sacrificed 10, 20 and 30 days after HMSCs therapy. Kidney sections were exposed to histological, histochemical, immunohistochemical, morphometric and serological studies. In response to SC therapy, vacuolated cytoplasm, dark nuclei, detached epithelial lining and desquamated nuclei were noticed in few collecting tubules (CT). 10, 20 and 30 days following therapy. The mean count of CT showing desquamated nuclei and mean value of serum creatinine revealed significant difference in ADR group. The mean area% of Prussian blue+ve cells and that of CD105 +ve cells measured in subgroup S1 denoted a significant increase compared to subgroups S2 and S3. CONCLUSIONS: ADR induced tubulointerstitial damage that regressed in response to cord blood HMSC therapy.